CN114537337B - Braking system and electric drive axle - Google Patents
Braking system and electric drive axle Download PDFInfo
- Publication number
- CN114537337B CN114537337B CN202011328331.XA CN202011328331A CN114537337B CN 114537337 B CN114537337 B CN 114537337B CN 202011328331 A CN202011328331 A CN 202011328331A CN 114537337 B CN114537337 B CN 114537337B
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- China
- Prior art keywords
- bracket
- face
- adjusting arm
- inner end
- brake
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 238000005452 bending Methods 0.000 claims description 12
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T1/00—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles
- B60T1/02—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles acting by retarding wheels
- B60T1/06—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles acting by retarding wheels acting otherwise than on tread, e.g. employing rim, drum, disc, or transmission or on double wheels
- B60T1/067—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles acting by retarding wheels acting otherwise than on tread, e.g. employing rim, drum, disc, or transmission or on double wheels employing drum
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
- B60B35/00—Axle units; Parts thereof ; Arrangements for lubrication of axles
- B60B35/12—Torque-transmitting axles
- B60B35/16—Axle housings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T1/00—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles
- B60T1/02—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles acting by retarding wheels
- B60T1/06—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles acting by retarding wheels acting otherwise than on tread, e.g. employing rim, drum, disc, or transmission or on double wheels
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
- B60T13/10—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release
- B60T13/24—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release the fluid being gaseous
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Transportation (AREA)
- Braking Arrangements (AREA)
Abstract
本发明公开了一种制动系统及电驱动车桥，制动系统包括支架、凸轮轴、调整臂、制动气室；支架上设置有内端面、与内端面相对的外端面、以及位于支架周缘的侧面，在支架上设置有一避让槽，避让槽在内端面上形成第一开口、在侧面上形成第二开口；凸轮轴枢接在支架上；调整臂位于支架内端面的内侧，其包括与凸轮轴连接的第一端、以及远离第一端的第二端，调整臂上位于第一端和第二端的部分置于避让槽内且第二端位于支架的内端面和外端面之间；制动气室安装在支架上，制动气室的推杆连接于调整臂的第二端。本发明满足车辆的制动要求，避免制动气室挤占车辆的内部空间。
The present invention discloses a braking system and an electric drive axle, wherein the braking system comprises a bracket, a camshaft, an adjusting arm, and a brake air chamber; the bracket is provided with an inner end face, an outer end face opposite to the inner end face, and a side face located at the periphery of the bracket, and a avoidance groove is provided on the bracket, wherein the avoidance groove forms a first opening on the inner end face and a second opening on the side face; the camshaft is pivotally connected to the bracket; the adjusting arm is located on the inner side of the inner end face of the bracket, and comprises a first end connected to the camshaft, and a second end away from the first end, and the portion of the adjusting arm located at the first end and the second end is placed in the avoidance groove, and the second end is located between the inner end face and the outer end face of the bracket; the brake air chamber is installed on the bracket, and the push rod of the brake air chamber is connected to the second end of the adjusting arm. The present invention meets the braking requirements of the vehicle and avoids the brake air chamber from occupying the internal space of the vehicle.
Description
Technical Field
The invention relates to the technical field of vehicles, in particular to a braking system and an electric drive axle.
Background
With the continuous development of new energy technology, some vehicles gradually adopt an electric drive system to replace a traditional fuel engine so as to achieve the aim of energy conservation and environmental protection, for example, some buses, buses and the like at present begin to adopt wheel hub motors as power axles, drum brakes are generally arranged on the axles, each drum brake comprises a brake shoe, a cam shaft, an adjusting arm and a brake air chamber, wherein the brake shoes are arranged in a bracket of the axle and are used for being in friction fit with a brake drum in the bracket to provide braking force, the brake air chamber pushes the adjusting arm to swing so as to drive the cam shaft to move, and then the brake shoes are driven to swing, the cam shaft is required to be axially arranged and can be matched with the swinging ends of the brake shoes, meanwhile, a wheel hub motor is required to be arranged outside the bracket, a push rod of the brake air chamber is required to be connected to the adjusting arm, and at least one part of the push rod of the brake air chamber is protruded out of the inner end face of the bracket so as to cause the brake air chamber to occupy the inner space of the vehicle.
Disclosure of Invention
The invention aims to provide a braking system which can avoid occupying the internal space of a vehicle on the premise of meeting the braking requirement.
The invention provides an electric drive axle.
In order to achieve the first purpose, the invention adopts the following technical scheme:
the braking system comprises a bracket, a cam shaft, an adjusting arm and a braking air chamber;
the bracket is provided with an inner end face, an outer end face opposite to the inner end face and a side face positioned at the periphery of the bracket, the bracket is provided with an avoidance groove, the avoidance groove is provided with a first opening on the inner end face and a second opening on the side face;
the cam shaft is pivoted on the bracket;
The adjusting arm is positioned on the inner side of the inner end face of the bracket and comprises a first end connected with the cam shaft and a second end far away from the first end, the parts of the adjusting arm positioned on the first end and the second end are arranged in the avoidance groove, and the second end is positioned between the inner end face and the outer end face of the bracket;
the brake chamber is mounted on the bracket, and a push rod of the brake chamber is connected to the second end of the adjusting arm.
The inner end face of the support is provided with a concave position, the support is provided with a shaft hole extending from the bottom face of the concave position to the outer end face, the cam shaft is connected in the shaft hole in a penetrating mode, a first opening of the avoidance groove is communicated with the concave position, and the first end of the adjusting arm is contained in the concave position and connected with the cam shaft.
The support is provided with a connecting rib connected between two sides of the avoidance groove.
The second end of the adjusting arm is positioned at one side of the connecting rib away from the inner end face.
The adjusting arm is provided with a first bending part which is bent from the first end towards the avoidance groove, and a second bending part which is bent from one side of the first bending part away from the first end along the radial direction of the bracket.
A mounting frame is fixed on the side face of the bracket, and the brake chamber is fixed on the mounting frame.
The bracket is provided with a mounting surface, the mounting surface is provided with a through groove, the front end surface of the brake chamber is fixedly attached to the mounting surface, and the push rod extends out of the front end surface of the brake chamber and is connected with the second end of the adjusting arm after passing through the through groove.
In order to achieve the second purpose, the invention adopts the following technical scheme:
an electrically driven axle comprising the braking system described above.
The invention arranges the adjusting arm at the inner end surface of the bracket to connect the first end of the adjusting arm with the cam shaft at the inner end surface of the bracket, thereby meeting the braking requirement of the vehicle.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic view of the installation of the present invention;
Fig. 3 is a cross-sectional view of the present invention.
Detailed Description
The invention is further described below with reference to the drawings and detailed description:
As shown in fig. 1,2 and 3, a brake system for an electric drive axle according to the present invention, specifically, a brake system for an electric drive axle, comprising a bracket 10, a cam shaft 40, an adjusting arm 20 and a brake chamber 30, wherein an inner end surface 101, an outer end surface opposite to the inner end surface 101 and a side surface 102 located at the periphery of the bracket 10 are arranged on the bracket 10, a brake shoe and a brake drum are installed inside the bracket 10 from the outer end surface of the bracket 10, a relief groove 13 is arranged on the bracket 10, the relief groove 13 is arranged at the position where the inner end surface 101 and the side surface 102 are connected, one end of the relief groove 13 extends to the inner end surface 101 to form a first opening 131, the other end extends to the side surface 102 to form a second opening 132, the cam shaft 40 is mounted on the bracket 10 and is pivotally matched with the bracket 10, the axial direction of the cam shaft 40 is consistent with the axial direction of the bracket 10, one end extends to the inner end surface 101 of the bracket 10, and the other end is provided with a cam matched with the brake shoe to drive the brake shoe to swing; the adjusting arm 20 is disposed at a position located inside the inner end face 101 of the bracket 10 so as to be located as close to the inner end face 101 as possible, the adjusting arm 40 includes a first end 21 connected to the cam shaft 40, and a second end 22 remote from the first end 21, the first end 21 is provided with a connecting hole through which the cam shaft 40 is inserted, the surface of the cam shaft 40 and the inner wall of the hole are respectively provided with key grooves so that the cam shaft 40 can rotate in synchronization with the first end of the adjusting arm 20, the second end 22 of the adjusting arm 20 is disposed at the side face 102 of the bracket 10, and the second end 22 is located between the inner end face 101 and the outer end face of the bracket 10, the portion of the adjusting arm 20 located between the first end 21 and the second end 22 is accommodated in the escape groove 13, the first end 21 and the second end 22 of the adjusting arm 20 are offset by a certain distance in the axial direction of the bracket 10, the main body portion of the adjusting arm 20 is disposed in the avoidance groove 13, the first end 21 of the adjusting arm is connected with the cam shaft 40 at the inner end face 101 after being penetrated out of the first opening 131 of the avoidance groove 13, and the second end 22 is penetrated out of the second opening 132 of the avoidance groove 13, so that the second end 22 can be located between the inner end face 101 and the outer end face of the bracket 10. The brake chamber 30 is mounted on the bracket 10, and a push rod 31 of the brake chamber 30 is connected to the second end 22 of the adjustment arm 20.
In the invention, the adjusting arm is arranged at the inner end surface of the bracket, so that the first end of the adjusting arm is connected with the camshaft at the inner end surface of the bracket, the braking requirement of a vehicle is met, meanwhile, the adjusting arm is accommodated by the avoidance groove, and the second end of the adjusting arm, which is connected with the braking air chamber, is positioned between the inner end surface and the outer end surface of the bracket, so that the braking air chamber is prevented from occupying the space inside the inner end surface of the bracket, and the braking air chamber is prevented from occupying the inner space of the vehicle.
In a preferred embodiment, the inner end surface 101 of the bracket 10 is provided with a concave position 12, the bracket 10 is provided with a shaft hole 15, the shaft hole 15 extends from the bottom surface of the concave position 12 towards the outer end surface of the bracket 10, the cam shaft 40 is penetrated in the shaft hole 15, the first opening 131 of the avoidance groove 13 is communicated with the concave position 12, the first end 21 of the adjusting arm 20 is accommodated in the concave position 12, and the first end 21 of the adjusting arm 20 is connected with the cam shaft 40 in the concave position 12, so that the mounting position of the first end 21 of the adjusting arm 20 is moved towards the outer end surface of the bracket 10 by a certain distance, the height of the adjusting arm 20 protruding out of the inner end surface 101 of the bracket 10 is reduced, and the extrusion of the adjusting arm 20 to the vehicle inner space is avoided.
In order to ensure the strength of the bracket 10, the bracket 10 is provided with a connecting rib 14 connected between the two sides of the avoidance groove 13, the avoidance groove 13 on the bracket 10 is reinforced by the connecting rib 14, in addition, the second end 22 of the adjusting arm 20 is positioned at one side of the connecting rib 14 far away from the inner end face 101 after being penetrated out by the second opening 132 of the avoidance groove 13, the position of the adjusting arm 20 is limited by the connecting rib 14, and the adjusting arm is protected by the connecting rib 14.
In the above-mentioned solution, the first end 21 of the adjusting arm 20 is connected to the cam shaft 40 at the inner end 101, the second end 22 is connected to the push rod 31 of the brake chamber 30 at a position between the inner end 101 and the outer end on the side 102, that is, the first end 21 and the second end 22 of the adjusting arm 20 are offset from each other by a certain distance in the axial direction of the bracket 10, for this purpose, the first bending portion 201 and the second bending portion 202 are provided on the adjusting arm 20, where the first bending portion 201 is bent from the first end 21 toward the inside of the escape groove 13, so that the adjusting arm 20 can be accommodated in the escape groove 13, the second bending portion 202 is bent from the side of the first bending portion 201 away from the first end 21 radially outwards along the bracket 10, and the second end 22 is located at the end of the second bending portion 202 penetrating out of the escape groove 13, so that the first end 21 and the second end 22 are offset by a certain distance in the axial direction of the bracket 10, and after the push rod 31 of the brake chamber 30 is connected to the second end 22, the brake chamber 30 can protrude beyond the inner end 101 as much as possible.
In other embodiments, the invention fixes a mounting frame 32 on the side 102 of the bracket 10, the mounting frame 32 can be specifically fixed on the bracket 10 by adopting a bolt connection or welding mode, the brake chamber 30 is fixed on the mounting frame 32, a mounting surface is arranged on the mounting frame 32, a through groove 321 is formed on the mounting surface, the front end surface of the brake chamber 30 is attached and fixed on the mounting surface through a bolt, and a push rod 31 extends out from the front end surface of the brake chamber 30 and is connected with the second end 22 of the adjusting arm 20 after passing through the through groove 321.
The electrically driven vehicle axle of the present invention includes the brake system described above, and other structures of the electrically driven vehicle axle are the same as or similar to those of the prior art, and will not be described herein.
Although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that the foregoing embodiments may be modified or equivalents may be substituted for some of the features thereof, and that the modifications or substitutions do not depart from the spirit and scope of the embodiments of the present invention.
Claims (7)
1. The brake system is characterized by comprising a bracket, a cam shaft, an adjusting arm and a brake air chamber;
the bracket is provided with an inner end face, an outer end face opposite to the inner end face and a side face positioned at the periphery of the bracket, the bracket is provided with an avoidance groove, the avoidance groove is provided with a first opening on the inner end face and a second opening on the side face;
the cam shaft is pivoted on the bracket;
The adjusting arm is positioned on the inner side of the inner end face of the bracket and comprises a first end connected with the cam shaft and a second end far away from the first end, the parts of the adjusting arm positioned on the first end and the second end are arranged in the avoidance groove, and the second end is positioned between the inner end face and the outer end face of the bracket;
the braking air chamber is arranged on the bracket, and a push rod of the braking air chamber is connected with the second end of the adjusting arm;
The inner end face of the support is provided with a concave position, the support is provided with a shaft hole extending from the bottom face of the concave position to the outer end face, the cam shaft is connected in the shaft hole in a penetrating mode, a first opening of the avoidance groove is communicated with the concave position, and the first end of the adjusting arm is contained in the concave position and connected with the cam shaft.
2. A brake system according to claim 1, wherein the bracket is provided with a connecting rib connected between the sides of the escape slot.
3. The brake system of claim 2, wherein the second end of the adjustment arm is located on a side of the connecting rib remote from the inner end surface.
4. The brake system of claim 1, wherein the adjustment arm is provided with a first bending portion bent from the first end into the relief groove, and a second bending portion bent radially outwardly of the bracket from a side of the first bending portion remote from the first end.
5. The brake system of claim 1, wherein a mounting bracket is secured to a side of the bracket, and the brake chamber is secured to the mounting bracket.
6. The brake system of claim 5, wherein the mounting bracket is provided with a mounting surface having a through slot, the front end surface of the brake chamber is snugly secured to the mounting surface, and the push rod extends from the front end surface of the brake chamber and is connected to the second end of the adjustment arm after passing through the through slot.
7. An electrically driven vehicle axle comprising a brake system according to any one of claims 1-6.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011328331.XA CN114537337B (en) | 2020-11-24 | 2020-11-24 | Braking system and electric drive axle |
| PCT/CN2021/118846 WO2022110994A1 (en) | 2020-11-24 | 2021-09-16 | Braking system and electric drive axle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011328331.XA CN114537337B (en) | 2020-11-24 | 2020-11-24 | Braking system and electric drive axle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114537337A CN114537337A (en) | 2022-05-27 |
| CN114537337B true CN114537337B (en) | 2025-02-14 |
Family
ID=81660613
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011328331.XA Active CN114537337B (en) | 2020-11-24 | 2020-11-24 | Braking system and electric drive axle |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN114537337B (en) |
| WO (1) | WO2022110994A1 (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103507793A (en) * | 2012-06-14 | 2014-01-15 | 美驰技术有限责任公司 | Axle assembly |
| CN214189607U (en) * | 2020-11-24 | 2021-09-14 | 广东富华重工制造有限公司 | Braking system and electric drive axle |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR19990043222A (en) * | 1997-11-29 | 1999-06-15 | 양재신 | Automatic clearance regulator control arm anchor bracket structure for air brake of bus |
| US8176811B2 (en) * | 2004-07-30 | 2012-05-15 | Dana Heavy Vehicle Systems Group, Llc | Ribbed cover for drive axle housing |
| CN202782508U (en) * | 2012-09-24 | 2013-03-13 | 东风汽车公司 | Rear axle housing structure of commercial vehicle |
| CN204701396U (en) * | 2015-05-22 | 2015-10-14 | 方盛车桥（苏州）有限公司 | Be convenient to the automobile axle dismantling gap adjustment arm |
| CN209290082U (en) * | 2019-01-15 | 2019-08-23 | 湖北和德工业科技有限公司 | A kind of perforation double-rear-axle |
| CN111731245B (en) * | 2020-05-21 | 2022-10-04 | 方盛车桥（柳州）有限公司 | Automobile rear axle assembly with adjusting arm convenient to disassemble, assemble and adjust |
-
2020
- 2020-11-24 CN CN202011328331.XA patent/CN114537337B/en active Active
-
2021
- 2021-09-16 WO PCT/CN2021/118846 patent/WO2022110994A1/en active Application Filing
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103507793A (en) * | 2012-06-14 | 2014-01-15 | 美驰技术有限责任公司 | Axle assembly |
| CN214189607U (en) * | 2020-11-24 | 2021-09-14 | 广东富华重工制造有限公司 | Braking system and electric drive axle |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114537337A (en) | 2022-05-27 |
| WO2022110994A1 (en) | 2022-06-02 |
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