CN111043185B - Integrated low-delay intermediate shaft brake - Google Patents
Integrated low-delay intermediate shaft brake Download PDFInfo
- Publication number
- CN111043185B CN111043185B CN201911300396.0A CN201911300396A CN111043185B CN 111043185 B CN111043185 B CN 111043185B CN 201911300396 A CN201911300396 A CN 201911300396A CN 111043185 B CN111043185 B CN 111043185B
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- Prior art keywords
- brake
- quick release
- release valve
- shell
- piston
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D55/00—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes
- F16D55/24—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with a plurality of axially-movable discs, lamellae, or pads, pressed from one side towards an axially-located member
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D65/00—Parts or details
- F16D65/005—Components of axially engaging brakes not otherwise provided for
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D65/00—Parts or details
- F16D65/02—Braking members; Mounting thereof
- F16D65/04—Bands, shoes or pads; Pivots or supporting members therefor
- F16D65/092—Bands, shoes or pads; Pivots or supporting members therefor for axially-engaging brakes, e.g. disc brakes
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D65/00—Parts or details
- F16D65/14—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position
- F16D65/16—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position arranged in or on the brake
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2121/00—Type of actuator operation force
- F16D2121/02—Fluid pressure
- F16D2121/04—Fluid pressure acting on a piston-type actuator, e.g. for liquid pressure
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2125/00—Components of actuators
- F16D2125/02—Fluid-pressure mechanisms
- F16D2125/08—Seals, e.g. piston seals
Abstract
The invention relates to an integrated low-delay intermediate shaft brake which is arranged at the front end of an intermediate shaft of a transmission and comprises a brake shell connected with a transmission shell, wherein the brake shell is provided with three gas circuits, one end of each gas circuit is blocked, and a quick release valve, a piston, 5 friction plates, 5 steel sheets and a top pin pressed into the piston are arranged in the brake shell; according to the quick release valve device with the simple integrated structure in the control gas circuit, when braking is relieved, the exhaust of the brake cylinder does not pass through the brake control electromagnetic valve any more, but the exhaust is directly exhausted through the quick release valve, so that the delay time of relieving braking is shortened, and the response speed of a system is improved; the invention adopts a highly integrated structure, integrates the quick release valve, the piston, the friction plate, the steel sheet and the like in one brake shell, has high system integration level and strong adaptability, and improves the convenience of assembly and maintenance; the piston of the invention adopts a double-channel sealing structure, realizes the gas and oil sealing on both sides of the piston by two identical Y-shaped sealing rings, and has reliable sealing and lower cost.
Description
Technical Field
The invention belongs to the technical field of mechanical automatic transmissions (AMT) without synchronizers for commercial vehicles, and relates to an integrated low-delay intermediate shaft brake for braking and adjusting the rotating speed of a transmission of a commercial vehicle.
Background
At present, part of mechanical automatic transmissions do not have synchronizers, adopt sliding gear sleeves to shift gears, and when the gears are shifted up, the rotating speed of an intermediate shaft needs to be reduced to a reasonable rotating speed range, so that the gears can be smoothly meshed with each other to realize gear shifting. The speed reduction function can be realized by an intermediate shaft brake, the intermediate shaft brake has mechanical characteristics, and the brake has response hysteresis to the brake control of the rotating speed of the intermediate shaft of the transmission. Therefore, when the brake is released, the brake has time delay, and the brake force is kept for a period of time, so that the brake force of the brake on the intermediate shaft can be completely released. The conventional intermediate shaft brake adopted at home and abroad has long braking release response time, is difficult to accurately control, and is easy to cause 'over-braking phenomenon', thus causing gear shifting failure.
In addition, the intermediate shaft brake that adopts at home and abroad is mostly split type, and spare parts such as friction disc, steel sheet need scattered assembly to the derailleur assembly promptly. Resulting in inconvenient assembly and maintenance of the transmission assembly.
Disclosure of Invention
The invention aims to provide an integrated low-delay intermediate shaft brake aiming at the defects of the prior art.
The purpose of the invention is realized by the following technical scheme:
the utility model provides a low time delay jackshaft brake of integration, installs the front end at derailleur jackshaft 15 which characterized in that: the brake device comprises a brake shell 8 connected with a speed changer shell 8, wherein the brake shell 8 is provided with an air passage I801, an air passage II 802 and an air passage III 803, and one end of the air passage I801 is blocked;
a quick release valve, a piston 6, 5 friction plates 10, 5 steel sheets 11 and a top pin 17 pressed into the piston 6 are arranged in the brake shell 8; the quick release valve comprises a shell, a quick release valve core 3 and a quick release valve vent plug 4, wherein the quick release valve core 3 and the quick release valve vent plug 4 are arranged in the shell, the air path 802 and the air path 803 are respectively connected with the tail end and the side wall of the quick release valve shell, high-pressure air enters the air path I801 and the air path II 802 and can enter an air cavity of the brake shell 8 through the quick release valve core 3 and the air path III 803; the 5 steel sheets 11, the 5 friction plates 10 and the thickened steel sheets 9 are sequentially arranged in the brake shell 8 and limited;
a return spring 13 and a return top sleeve 12 which can rotate along with the transmission intermediate shaft 15 are sleeved in the inner cavity of the transmission intermediate shaft 15; a gap exists between the piston 6 and the steel sheet 11, the piston 6 can be positioned at the end part of the brake shell 8 by the return jacking sleeve 12 under the action of the installation pretightening force of the return spring 13, and the piston 6 can move forwards under the action of high-pressure air to extrude the steel sheet 11, so that sliding friction is generated between the steel sheet 11 and the friction sheet 10, and the rotating speed of the intermediate shaft 15 of the transmission is reduced.
Furthermore, one end of the plugging air passage I801 is plugged by a steel ball 16.
Furthermore, an O-shaped dense ring 2 is arranged in a ring groove of the quick release valve vent plug 4 and limited by a small snap ring 1.
Further, the piston 6 adopts a double-channel sealing structure, a guide ring 5 and 2Y-shaped sealing rings 7 are arranged in a ring groove of the piston 6, and the 2Y-shaped sealing rings 7 are placed back to back and are placed in a brake shell 8 together.
Further, 5 steel sheets 11, 5 friction plates 10 and thickened steel sheets 9 are sequentially arranged in the brake shell 8 and limited by a large clamping ring 14.
Further, the outer spline of the steel plate 11 is engaged with the inner spline of the brake housing 8 and is always kept stationary together with the brake housing 8, and the inner spline of the friction plate 10 is engaged with the outer spline of the transmission intermediate shaft 15 and rotates together with the transmission intermediate shaft 15.
Further, when the vehicle needs to be shifted up in the driving process, high-pressure gas enters the gas circuit I801 and the gas circuit II 802 through the control electromagnetic valve and a gas inlet on the brake shell 8, the lip of the quick release valve core 3 is opened under the action of high-pressure gas in the gas circuit, so that the high-pressure gas in the gas circuit enters the gas cavity of the brake shell 8 through the quick release valve core 3 and the gas circuit III 803, and meanwhile, under the action of the high-pressure gas, the quick release valve core 3 tightly presses the quick release valve vent plug 4 to seal the quick release valve vent plug.
Further, when the rotating speed is reduced to be within the target rotating speed range, the electromagnetic valve is powered off, high-pressure air in the air passage is discharged into the atmosphere, the lip of the valve core 3 of the quick release valve is closed, the vent plug 4 of the quick release valve is unsealed, the high-pressure air in the air cavity of the brake shell 8 is rapidly discharged into the atmosphere through the vent plug 4 of the quick release valve, at the moment, the piston 6 returns to the initial position under the action of the return spring 13, the sliding friction between the steel sheet 11 and the friction sheet 10 is relieved, and the brake stops working.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the quick release valve device with the simple integrated structure in the control gas circuit, when braking is relieved, the exhaust of the brake cylinder does not pass through the brake control electromagnetic valve any more, but the exhaust is directly exhausted through the quick release valve, so that the delay time of relieving braking is shortened, and the response speed of a system is improved;
2. the invention adopts a highly integrated structure, integrates the quick release valve, the piston, the friction plate, the steel sheet and the like in one brake shell, has high system integration level and strong adaptability, and improves the convenience of assembly and maintenance;
3. the piston assembly of the invention adopts a double-channel sealing structure, realizes the gas and oil sealing on both sides of the piston by two identical Y-shaped sealing rings, and has reliable sealing and lower cost.
Drawings
FIG. 1 is a schematic structural view of an intermediate shaft brake assembly of the present invention;
FIG. 2 is a graphical comparison of the response curves of the present invention versus other countershaft brakes.
In the figure: 1. the brake comprises a small clamping ring 2, an O-shaped sealing ring 3, a quick release valve core 4, a quick release valve exhaust plug 5, a guide ring 6, a piston 7, a Y-shaped sealing ring 8, a brake shell 9, a thickened steel sheet 10, a friction sheet 11, a steel sheet 12, a return top sleeve 13, a return spring 14, a large clamping ring 15, a transmission intermediate shaft 16, a steel ball 17, a top pin 801, a gas path I802, a gas path II 803 and a gas path III.
Detailed Description
The following detailed description of specific embodiments of the invention refers to the accompanying drawings.
As shown in fig. 1, the brake is mounted on the front end of the transmission intermediate shaft 15. The quick release valve core 3 is arranged in the brake shell 8, the brake shell 8 is provided with an air passage 801, an air passage 802 and an air passage 803, and the steel ball 16 is used for plugging one end of the air passage 801 so as to prevent air from leaking outside. The O-shaped sealing ring 2 is arranged in a ring groove of a quick release valve vent plug 4 and is arranged in a brake shell 8 together, and the small clamping ring 1 plays a limiting role. The knock pin 17 is pressed into the piston 6, the guide ring 5 and two Y-shaped sealing rings 7 are arranged in a ring groove of the piston 6, wherein the two Y-shaped sealing rings 7 are placed back to back and are placed in the brake shell 8 together; the steel sheet 11 and the friction sheet 10 are sequentially placed in the brake shell 8, the thickened steel sheet 9 is finally installed, the large clamping ring 14 plays a limiting and fixing role, an external spline of the steel sheet 11 is matched with an internal spline of the brake shell 8 and always keeps a static state together with the brake shell 8, and an internal spline of the friction sheet 10 is matched with an external spline of the transmission intermediate shaft 15 and rotates together with the transmission intermediate shaft 15. The return spring 13 and the return top sleeve 12 are sleeved in an inner cavity of the transmission intermediate shaft 15 and rotate along with the transmission intermediate shaft 15, and when the brake shell 8 is connected with the transmission shell through bolts, the return spring 13 generates certain installation pretightening force.
When the brake does not work, the piston 6 is positioned at the end part of the brake shell 8 by the return top sleeve 12 under the action of the installation pretightening force of the return spring 13, and a certain gap exists between the piston 6 and the steel sheet 11. When a vehicle needs to be shifted up in the driving process, high-pressure gas enters the gas circuit I801 and the gas circuit II 802 through the control electromagnetic valve and a gas inlet on the brake shell 8, the lip of the quick release valve core 3 is opened under the action of high-pressure gas in the gas circuit, so that the high-pressure gas in the gas circuit enters the gas cavity of the brake shell 8 through the quick release valve core 3 and the gas circuit III 803, and meanwhile, under the action of the high-pressure gas, the quick release valve core 3 is tightly pressed on the quick release valve vent plug 4 to seal the quick release valve vent plug. The high pressure is kept in the cylinder of the brake shell 8, the piston 6 moves forwards under the action of the high-pressure gas to extrude the steel sheet 11, so that sliding friction is generated between the steel sheet 11 and the friction plate 10, and the rotating speed of the intermediate shaft 15 of the transmission is reduced. When the rotating speed is reduced to the target rotating speed range, the electromagnetic valve is powered off, high-pressure air in the air passage is discharged into the atmosphere, the lip of the valve core 3 of the quick release valve is closed, the vent plug 4 of the quick release valve is unsealed, the high-pressure air in the air cavity of the brake shell 8 is quickly discharged into the atmosphere through the vent plug 4 of the quick release valve, at the moment, the piston 6 returns to the initial position under the action of the return spring 13, the sliding friction between the steel sheet 11 and the friction sheet 10 is relieved, and the brake stops working.
When the brake assembly is assembled, the spline shaft-shaped guide tool is used for adjusting the initial angles of the internal splines of the friction plates 10, then the guide spline shaft tool is taken out, the brake assembly is sleeved on the external spline of the intermediate shaft 15 of the transmission, and then the brake assembly is connected with the transmission through bolts.
Comparison of the invention with other intermediate shaft brake response curves is shown in fig. 2, line 1 is the invention response curve, T1 is the invention brake release response time, and line 2 is the other brake response curve T2 is the other brake release response time.
Claims (6)
1. An integration low time delay jackshaft brake installs the front end at derailleur jackshaft (15), its characterized in that: the brake device comprises a brake shell (8) connected with a transmission shell, wherein the brake shell (8) is provided with an air passage I (801), an air passage II (802) and an air passage III (803), and one end of the air passage I (801) is blocked;
a quick release valve, a piston (6), 5 friction plates (10), 5 steel sheets (11) and a top pin (17) pressed into the piston (6) are arranged in the brake shell (8), and the 5 steel sheets (11), the 5 friction plates (10) and a thickened steel sheet (9) are sequentially arranged in the brake shell (8) and limited by a large clamping ring (14); the quick release valve comprises a shell, a quick release valve core (3) and a quick release valve exhaust plug (4) which are arranged in the shell, wherein a gas path II (802) and a gas path III (803) are respectively connected with the tail end and the side wall of the quick release valve shell, high-pressure gas enters the gas path I (801) and the gas path II (802) and can enter the gas cavity of the brake shell (8) through the quick release valve core (3) and the gas path III (803); the 5 steel sheets (11), the 5 friction plates (10) and the thickened steel sheets (9) are sequentially arranged in the brake shell (8) and limited;
a return spring (13) and a return top sleeve (12) which can rotate along with the transmission intermediate shaft (15) are sleeved in the inner cavity of the transmission intermediate shaft (15); a gap is formed between the piston (6) and the steel sheet (11), the piston (6) can be positioned at the end part of the brake shell (8) by the return top sleeve (12) under the action of the installation pretightening force of the return spring (13), and the piston (6) can move forwards to extrude the steel sheet (11) under the action of high-pressure gas, so that sliding friction is generated between the steel sheet (11) and the friction plate (10), and the rotating speed of a middle shaft (15) of the transmission is reduced;
high-pressure gas enters a gas circuit I (801) and a gas circuit II (802) through a control electromagnetic valve and a gas inlet on a brake shell (8), a lip of a quick release valve core (3) is opened under the action of high-pressure gas in the gas circuit, so that the high-pressure gas in the gas circuit enters the gas cavity of the brake shell (8) through the quick release valve core (3) and a gas circuit III 803, and meanwhile, under the action of the high-pressure gas, the quick release valve core (3) is tightly pressed on a quick release valve vent plug (4) to seal the quick release valve vent plug;
when air is fed, the valve core (3) of the quick release valve can expand the lip outwards under the action of high-pressure air in the air passage, and when air is exhausted, the lip is recovered.
2. An integrated low-delay intermediate shaft brake as claimed in claim 1, wherein: one end of the plugging air passage I (801) is plugged by a steel ball (16).
3. An integrated low-delay intermediate shaft brake as claimed in claim 1, wherein: an O-shaped sealing ring (2) is arranged in a ring groove of the quick release valve vent plug (4) and is limited by a small clamping ring (1).
4. An integrated low-delay intermediate shaft brake as claimed in claim 1, wherein: piston (6) adopt two seal structure, are equipped with guide ring (5) and 2Y type sealing washer (7) in piston (6) annular, 2Y type sealing washer (7) are placed back to arrange in stopper casing (8) together.
5. An integrated low-delay intermediate shaft brake as claimed in claim 1, wherein: the outer spline of the steel sheet (11) is matched with the inner spline of the brake shell (8) and always keeps a static state together with the brake shell (8), and the inner spline of the friction sheet (10) is matched with the outer spline of the transmission intermediate shaft (15) and rotates together with the transmission intermediate shaft (15).
6. An integrated low-delay intermediate shaft brake as claimed in claim 1, wherein: when the rotating speed is reduced to be within the range of the target rotating speed, the electromagnetic valve is powered off, high-pressure gas in the air passage is discharged into the atmosphere, the lip of the valve core (3) of the quick release valve is closed, the vent plug (4) of the quick release valve is unsealed, the high-pressure gas in the air cavity of the brake shell (8) is quickly discharged into the atmosphere through the vent plug (4) of the quick release valve, at the moment, the piston (6) returns to the initial position under the action of the return spring (13), the sliding abrasion between the steel sheet (11) and the friction sheet (10) is relieved, and the brake stops working.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911300396.0A CN111043185B (en) | 2019-12-17 | 2019-12-17 | Integrated low-delay intermediate shaft brake |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911300396.0A CN111043185B (en) | 2019-12-17 | 2019-12-17 | Integrated low-delay intermediate shaft brake |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111043185A CN111043185A (en) | 2020-04-21 |
| CN111043185B true CN111043185B (en) | 2022-03-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911300396.0A Active CN111043185B (en) | 2019-12-17 | 2019-12-17 | Integrated low-delay intermediate shaft brake |
Country Status (1)
| Country | Link |
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| CN (1) | CN111043185B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112576658B (en) * | 2020-12-18 | 2022-06-10 | 陕西法士特齿轮有限责任公司 | Air path control system and control method of AMT brake |
| CN114110156A (en) * | 2021-11-29 | 2022-03-01 | 中国重汽集团济南动力有限公司 | AMT transmission brake gas circuit and control method thereof |
| CN114370464B (en) * | 2022-01-21 | 2023-06-16 | 一汽解放汽车有限公司 | Intermediate shaft brake |
| CN114370466B (en) * | 2022-01-21 | 2023-06-16 | 一汽解放汽车有限公司 | Intermediate shaft brake |
| CN114382878B (en) * | 2022-01-24 | 2023-03-14 | 一汽解放汽车有限公司 | Transmission intermediate shaft brake control method, storage medium and vehicle |
| CN115182944A (en) * | 2022-06-10 | 2022-10-14 | 陕西法士特齿轮有限责任公司 | Intermediate shaft brake sealing and positioning structure and intermediate shaft brake |
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| CN202674091U (en) * | 2012-06-12 | 2013-01-16 | 无锡市第五机械制造有限公司 | Rapid gas discharge mechanism for pneumatic clutch |
| CN203627601U (en) * | 2013-11-07 | 2014-06-04 | 陕西法士特齿轮有限责任公司 | AMT (automated mechanical transmission) brake |
| CN204004070U (en) * | 2014-07-09 | 2014-12-10 | 徐挺 | The clutch booster of improvement |
| JP2015101438A (en) * | 2013-11-25 | 2015-06-04 | 三菱電機株式会社 | Elevator brake device and elevator system |
| CN106641040A (en) * | 2016-12-14 | 2017-05-10 | 陕西航空电气有限责任公司 | Intermediate shaft brake piston |
| CN110439942A (en) * | 2019-07-11 | 2019-11-12 | 东风商用车有限公司 | A kind of resetting structure of intermediate shaft brake |
-
2019
- 2019-12-17 CN CN201911300396.0A patent/CN111043185B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202674091U (en) * | 2012-06-12 | 2013-01-16 | 无锡市第五机械制造有限公司 | Rapid gas discharge mechanism for pneumatic clutch |
| CN203627601U (en) * | 2013-11-07 | 2014-06-04 | 陕西法士特齿轮有限责任公司 | AMT (automated mechanical transmission) brake |
| JP2015101438A (en) * | 2013-11-25 | 2015-06-04 | 三菱電機株式会社 | Elevator brake device and elevator system |
| CN204004070U (en) * | 2014-07-09 | 2014-12-10 | 徐挺 | The clutch booster of improvement |
| CN106641040A (en) * | 2016-12-14 | 2017-05-10 | 陕西航空电气有限责任公司 | Intermediate shaft brake piston |
| CN110439942A (en) * | 2019-07-11 | 2019-11-12 | 东风商用车有限公司 | A kind of resetting structure of intermediate shaft brake |
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| CN111043185A (en) | 2020-04-21 |
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