CN102943828A - Automated mechanical transmission (AMT) braking device - Google Patents
Automated mechanical transmission (AMT) braking device Download PDFInfo
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- CN102943828A CN102943828A CN201210488678XA CN201210488678A CN102943828A CN 102943828 A CN102943828 A CN 102943828A CN 201210488678X A CN201210488678X A CN 201210488678XA CN 201210488678 A CN201210488678 A CN 201210488678A CN 102943828 A CN102943828 A CN 102943828A
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- Prior art keywords
- braking device
- axle
- speed changer
- bearing
- amt
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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
- F16H—GEARING
- F16H3/00—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion
- F16H3/02—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion
- F16H3/08—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially with continuously meshing gears, that can be disengaged from their shafts
- F16H3/087—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially with continuously meshing gears, that can be disengaged from their shafts characterised by the disposition of the gears
- F16H3/093—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially with continuously meshing gears, that can be disengaged from their shafts characterised by the disposition of the gears with two or more countershafts
- F16H3/095—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially with continuously meshing gears, that can be disengaged from their shafts characterised by the disposition of the gears with two or more countershafts with means for ensuring an even distribution of torque between the countershafts
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Braking Arrangements (AREA)
Abstract
The invention discloses an automated mechanical transmission (AMT) braking device which comprises a first shaft bearing cover, wherein the first shaft bearing cover is sleeved on a first shaft and connected with a transmission casing. A piston is installed in an air cylinder of the first shaft bearing cover and is stepped, three evenly-distributed semicircular protrusions are arranged at the large-diameter position on the right side, one end of each of three return springs abuts against a corresponding semicircular protrusion, and the other end of each of three return springs is installed in a corresponding hole of the transmission casing. A bearing with a locking groove on one face is installed in a central hole on the front end face of the transmission casing, and two sides of the bearing are opened. A bearing outer ring is provided with a locking ring. A plurality of pairs of coupling pieces and friction pieces are installed on the right side of the piston at intervals. Compared with the prior art, the AMT braking device has the advantages of being compact in structure, few in occupied space and light in weight; being good in generality and capable of being matched with different series of double-middle-shaft transmissions; being high in integration level and reliable in performance; and being low in cost and good in economical efficiency.
Description
Technical field
The present invention relates to the automotive brake technical field, particularly a kind of AMT speed changer braking device.
Background technique
For the heavy-duty commercial vehicle AMT(electric control mechanical type automatic speed variator of main tank without synchronizer) for, in starting and shifting up operation, because the secondary part rotary inertia is large, self long deceleration time, do not satisfy the requirement of fast slewing, need to partly brake clutch driven plate, transmission input shaft, jack shaft etc.For satisfying the control requirement of Fast synchronization, need to increase a cover braking device, external at present is electromagnetic brake type such as the AMT of Eaton break, be installed on side-draw power or power taking position, the end, adopting dust, to inspire confidence in company's break be electric-controlled pneumatic type, be installed on the jack shaft front end, and the employing oil pump is the friction plate fuel feeding.Domestic corporation such as People AMT brake structural are similar to ZF company, and to inspire confidence in company identical with adopting dust for control mode and mounting point.Fa Shite company break is installed as electric-controlled pneumatic type, is installed on end power taking place.From present use condition, basically can satisfy usage requirement, but also have some problems, bigger than normal such as volume weight, versatility is poor, as when mating different box, needs the part changed more, and it is shorter etc. that friction plate is subjected to the mounting point to affect the life-span.
Summary of the invention
The object of the present invention is to provide a kind of AMT speed changer braking device, to solve the problems of the technologies described above.
To achieve these goals, the present invention adopts following technological scheme:
A kind of AMT speed changer braking device comprises axle bearing lid, and axle bearing lid empty set is on an axle and connect case of transmission; In the cylinder of one axle bearing lid piston is housed, described piston is step-like, and place, large footpath, right side is provided with three uniform semi-cylindrical hills, and three return spring one ends support corresponding semi-cylindrical hill, and the other end is installed in the corresponding hole of case of transmission; One bearing of wearing locking groove is installed in the case of transmission front-end face center hole, and these bearing both sides are open; Described bearing outer ring is equipped with stop ring; Interval, described piston right side is equipped with some antithesis sheets and friction plate.
The present invention further improves and is: axle bearing lid passes through reinforced skeleton oil seal with an axle; One axle bearing lid seals by liner with case of transmission.
The present invention further improves and is: described piston is pressed on the cylinder leftmost side by return spring when the cylinder stuffiness, do not contact adjacent antithesis sheet.
The present invention further improves and is: described piston when the cylinder stuffiness and the gap between the adjacent antithesis sheet be 1.5mm.
The present invention further improves and is: place, large footpath, piston right side is evenly equipped with three semicircle breach, and this semicircle breach is 60 degree angles with semi-cylindrical hill simultaneously and evenly distributes; Three locating studs pass corresponding semicircle breach, and an end is installed in an axle bearing and covers in the corresponding hole, and the other end is installed in the corresponding hole of case of transmission by interference fit.
The present invention further improves and is: the return port that is provided with connection antithesis sheet and friction plate installation cavity of case of transmission bottom, and return port is communicated with the speed changer main tank, and this return port is higher than fuel head in the speed changer main tank.
The present invention further improves and is: the single-row radial ball bearing of described bearing for supplying fluid to flow through; The left side of single-row radial ball bearing is provided with platen, and the outer ring of single-row radial ball bearing is carried out axially locating by axle bearing lid by platen; The inner ring left side of single-row radial ball bearing is provided with an axle snap ring, and platen and an axle snap ring have the gap in the axial direction; The inner ring right side of single-row radial ball bearing is provided with an axle dottle pin.
The present invention further improves and is: antithesis sheet and platen external diameter are provided with the semicircle breach that supplies locating stud and return spring to pass through.
The present invention further improves and is: the friction plate outside diameter is less than the antithesis sheet and get out of the way locating stud and return spring; The internal spline of friction plate cooperates with an axle external splines.
The present invention further improves and is: the friction plate both sides are bonded with carbon fiber, and radial.
With respect to prior art, the present invention has the following advantages:
1, compact structure occupies little space, and is lightweight;
2, versatility is good, can satisfy the twin countershaft transmission of different series;
3, level of integration is high, reliable performance;
4, cost is low, good economy performance.
Description of drawings
Fig. 1 is a kind of AMT speed changer of the present invention braking device mounting point schematic diagram;
Fig. 2 is a kind of AMT speed changer of the present invention braking device plan view;
Fig. 3 is a kind of AMT speed changer of the present invention braking device left view;
Fig. 4 is a kind of AMT speed changer of the present invention braking device working principle schematic diagram.
Embodiment
Describe technological scheme of the present invention in detail below in conjunction with accompanying drawing.
As shown in Figure 1, a kind of AMT speed changer of the present invention braking device 100 is installed on the transmission input shaft place, given speed changer is 16 grades of AMT speed changers, need to prove, this AMT speed changer braking device 100 is not subjected to the impact of speed changer box, on an axle external splines that just cooperates with the friction plate internal spline of its impact, although and an axle is of a great variety, but exactly this section size is unified, and this mainly is because an axle bearing is constant, the versatility requirement when this has satisfied design.
Below in conjunction with accompanying drawing content of the present invention is described in detail.
A kind of AMT speed changer of the present invention braking device 100 is comprised of break solenoid valve, break and corresponding gas circuit.Shown in Figure 2 is the plan view of a kind of AMT speed changer of the present invention braking device 100, one axle bearing covers 1 empty set and is connected on the case of transmission 3 on an axle 2 and by 6 M10 bolt (not shown)s, one axle bearing lid, 1 and one axle 2 is realized sealing by reinforced outside framework oil seal 4, prevents that the fluid in the speed changer from overflowing.One axle bearing lid 1 is realized sealing with case of transmission 3 by liner 5.One axle bearing covers 1 right side piston is housed, and the piston Internal and external cycle is realized sealing by O type circle 6, O type circle 7 respectively.It is step-like that piston is, and three uniform semi-cylindrical hills are made at place, large footpath, right side, are used for supporting return spring 8 and make piston be positioned at the cylinder leftmost side when stuffiness, do not contact antithesis sheet 9, and the gap is about 1.5mm, to prevent unnecessary braking.Place, large footpath, piston right side is also uniform three semicircle breach, this breach is 60 degree angles distributions with semi-cylindrical hill simultaneously.Semicircle breach is mainly used in making locating stud 10 to be installed in the axle bearing lid 1 corresponding hole by this breach, can prevent also simultaneously that piston radial from rotating, semi-cylindrical hill also plays this effect, three locating stud 10 right-hand members are installed on the case of transmission 3 by interference fit, in addition, 3 return spring 8 right-hand members also are installed in the case of transmission 3 corresponding holes.One single-row radial ball bearing 11 of wearing locking groove is installed in the case of transmission 3 front-end face center holes, this bearing has been cancelled dust-proof cover, both sides are open, so that the fluid in the speed changer is by bearing engaging friction sheet 12 and antithesis sheet 9 places, and the rotation by friction plate 12 is to be lubricated friction plate 12, antithesis sheet 9 etc. and to dispel the heat, then fluid flows back to main tank by the return port 17 of case of transmission 3 bottoms, this backflow, and 17 positions are higher than fuel head in the speed changer main tank.Single-row radial ball bearing 11 outer rings are equipped with stop ring 13 and are realized the axially locating of single-row radial ball bearing 11 outer rings by axle bearing lid 1 by platen 14, and the axially locating of an axle 2 is to realize by an axle snap ring 15, an axle dottle pin 16 and the shaft shoulder.Platen 14 and an axle snap ring 15 leave certain interval in the axial direction, guarantee that on the one hand the two can not contact an axle 2 in the moving range that axially allows, and also is to be convenient to fluid from single-row radial ball bearing 11 engaging friction Pan12Chu on the other hand.To get out of the way locating stud 10 and return spring 8, make internal spline and cooperate 12 liang of side bonds carbon fibre materials of friction plate with an axle 2 external spliness by internal diameter less than antithesis sheet 9 for friction plate 12 outside diameters, and do radial, so that better to the friction surface fuel feeding, good cooling results, wearing and tearing reduce.Antithesis sheet 9 and platen 14 external diameters are made semicircle notch geometry as shown in Figure 3, so that by locating stud 10 and return spring 8.
Working procedure is as follows:
Fig. 2 is plan view of the present invention, and shown in Figure 4 is working principle schematic diagram of the present invention, and TCU accepts input speed and output speed constantly, and accepts the information such as engine speed and the speed of a motor vehicle by CAN.
When braking device is not worked, the braking device closed electromagnetic valve, suction port does not have air pressure, the return spring of three circle distribution acts on piston makes it be in leftward position, piston does not contact antithesis sheet and friction plate, also do not have positive pressure between friction plate and the antithesis sheet, this moment, only three friction plates dallied with an axle, and braking device does not play braking action.
When TCU judged that according to parameters such as the speed of a motor vehicle and engine speed needs upgrade, the AMT system at first took over the control of throttle, and the solenoid valve of solenoidoperated cluthes actuator makes the clutch actuating mechanism cylinder charge simultaneously, and clutch separates rapidly.Fully separately, the solenoid valve action of AMT system control gear-shifting actuating mechanism, make speed changer get back to neutral gear from gear, free gear is as shown in Figure 1 with the free reduction of speed of certain rotating speed on clutch driven plate, an axle, jack shaft and two axles at this moment, and this rotating speed is greater than sliding sleeve rotating speed to be engaged.
Open the solenoid valve of braking device this moment, make the inflation of braking device cylinder one axle bearing lid set up air pressure, pushing piston moves right, piston overcomes the resistance pressing friction sheet 12 and antithesis sheet 9 of return spring 8, this moment since axially the frictional resistance moment that produces of positive pressure so that the secondary part rotating speeds such as an axle reduce rapidly, when treating that rotating speed drops to OK range (rotating speed relies on input shaft rotating speed Sensor monitoring), close the braking device solenoid valve, braking device quits work, system controls the gear shifting actuating mechanism action again, and speed changer is hung into next gear from neutral gear.
The solenoid valve of system's solenoidoperated cluthes actuator makes the clutch combination afterwards, and after the clutch combination, system gives back the driver to Throttle Opening Control power, thereby finishes shift-up action one time.
Although invention has been described by reference to the accompanying drawings for the above; but the present invention is not limited to above-mentioned embodiment; above-mentioned embodiment only is schematic; rather than restrictive; those of ordinary skill in the art is under enlightenment of the present invention; not breaking away from the scope situation that aim of the present invention and claim protect, can also make a lot of forms, these all belong within the protection of the present invention.
Claims (10)
1. an AMT speed changer braking device is characterized in that, comprises axle bearing lid (1), and axle bearing lid (1) empty set is upper and connection case of transmission (3) at an axle (2); In the cylinder of one axle bearing lid (1) piston is housed, described piston is step-like, place, large footpath, right side is provided with three uniform semi-cylindrical hills, and three return spring (8) one ends support corresponding semi-cylindrical hill, and the other end is installed in the corresponding hole of case of transmission (3); One bearing of wearing locking groove is installed in case of transmission (3) the front-end face center hole, and these bearing both sides are open; Described bearing outer ring is equipped with stop ring (13); Interval, described piston right side is equipped with some antithesis sheets (9) and friction plate (12).
2. a kind of AMT speed changer braking device according to claim 1 is characterized in that, axle bearing lid (1) seals by reinforced outside framework oil seal (4) with an axle (2); One axle bearing lid (1) seals by liner (5) with case of transmission (3).
3. a kind of AMT speed changer braking device according to claim 1 is characterized in that, described piston is pressed on the cylinder leftmost side by return spring (8) when the cylinder stuffiness, does not contact adjacent antithesis sheet (9).
4. a kind of AMT speed changer braking device according to claim 2 is characterized in that, described piston when the cylinder stuffiness and the gap between the adjacent antithesis sheet (9) be 1.5mm.
5. a kind of AMT speed changer braking device according to claim 1 is characterized in that, place, large footpath, piston right side is evenly equipped with three semicircle breach, and this semicircle breach is 60 degree angles with semi-cylindrical hill simultaneously and evenly distributes; Three locating studs (10) pass corresponding semicircle breach, and an end is installed in the corresponding hole of axle bearing lid (1), and the other end is installed in the corresponding hole of case of transmission (3) by interference fit.
6. a kind of AMT speed changer braking device according to claim 1, it is characterized in that, the return port (17) that is provided with connection antithesis sheet (9) and friction plate (12) installation cavity of case of transmission (3) bottom, return port (17) is communicated with the speed changer main tank, and this return port (17) is higher than fuel head in the speed changer main tank.
7. a kind of AMT speed changer braking device according to claim 5 is characterized in that, the single-row radial ball bearing (11) of described bearing for supplying fluid to flow through; The left side of single-row radial ball bearing (11) is provided with platen (14), and the outer ring of single-row radial ball bearing (11) is covered (1) by an axle bearing and carried out axially locating by platen (14); The inner ring left side of single-row radial ball bearing (11) is provided with an axle snap ring (15), and platen (14) has the gap in the axial direction with an axle snap ring (15); The inner ring right side of single-row radial ball bearing (11) is provided with an axle dottle pin (16).
8. a kind of AMT speed changer braking device according to claim 7 is characterized in that, antithesis sheet (9) and platen (14) external diameter are provided with the semicircle breach that supplies locating stud (10) and return spring (8) to pass through.
9. a kind of AMT speed changer braking device according to claim 5 is characterized in that, friction plate (12) outside diameter is less than antithesis sheet (9) and get out of the way locating stud (10) and return spring (8); The internal spline of friction plate (12) cooperates with an axle (2) external splines.
10. a kind of AMT speed changer braking device according to claim 1 is characterized in that, friction plate (12) both sides are bonded with carbon fiber, and radial.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210488678.XA CN102943828B (en) | 2012-11-26 | 2012-11-26 | Automated mechanical transmission (AMT) braking device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210488678.XA CN102943828B (en) | 2012-11-26 | 2012-11-26 | Automated mechanical transmission (AMT) braking device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102943828A true CN102943828A (en) | 2013-02-27 |
| CN102943828B CN102943828B (en) | 2015-05-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210488678.XA Active CN102943828B (en) | 2012-11-26 | 2012-11-26 | Automated mechanical transmission (AMT) braking device |
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| CN (1) | CN102943828B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103267128A (en) * | 2013-06-03 | 2013-08-28 | 上海工程机械厂有限公司 | Chain wheel shaft sealing mechanism |
| CN105782288A (en) * | 2016-05-24 | 2016-07-20 | 中国重汽集团大同齿轮有限公司 | Intermediate shaft brake for AMT automatic mechanical speed changer |
| CN106641195A (en) * | 2017-01-23 | 2017-05-10 | 中国第汽车股份有限公司 | Heavy 12-gear AMT transmission assembly |
| CN110886797A (en) * | 2019-12-19 | 2020-03-17 | 东风商用车有限公司 | Novel intermediate shaft brake return mechanism |
| CN111255827A (en) * | 2020-01-17 | 2020-06-09 | 一汽解放汽车有限公司 | AMT intermediate shaft brake steel sheet and friction disc disengage structure |
| 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 |
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| CN101093001A (en) * | 2007-07-13 | 2007-12-26 | 三一重工股份有限公司 | Hydraulic disk type integrated arrestor with adjustable braking force |
| CN201043581Y (en) * | 2007-03-03 | 2008-04-02 | 杭州前进齿轮箱集团有限公司 | Braking mechanism of step-up box |
| CN201554803U (en) * | 2009-11-19 | 2010-08-18 | 中国重汽集团济南动力有限公司 | Brake for gear box |
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| CN201671988U (en) * | 2010-05-14 | 2010-12-15 | 上海东方液压件厂 | Normally-disengaged brake for transmission control |
| CN201934549U (en) * | 2010-12-23 | 2011-08-17 | 泸州邦立减速机有限责任公司 | Running speed reducer brake for service braking |
| CN202012589U (en) * | 2011-01-07 | 2011-10-19 | 索特传动设备有限公司 | Brake of revolution speed reducer |
| CN202946585U (en) * | 2012-11-26 | 2013-05-22 | 陕西法士特齿轮有限责任公司 | Brake device of advanced manufacturing technology (ATM) transmission |
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2012
- 2012-11-26 CN CN201210488678.XA patent/CN102943828B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE7107141U (en) * | 1970-02-28 | 1971-09-16 | Brown D Tractors Ltd | DISC BRAKE IN PARTICULAR FOR VEHICLES |
| CN1176353A (en) * | 1996-07-22 | 1998-03-18 | 易通公司 | Transmission inertia brake with self energizing |
| CN201043581Y (en) * | 2007-03-03 | 2008-04-02 | 杭州前进齿轮箱集团有限公司 | Braking mechanism of step-up box |
| CN101093001A (en) * | 2007-07-13 | 2007-12-26 | 三一重工股份有限公司 | Hydraulic disk type integrated arrestor with adjustable braking force |
| CN201575091U (en) * | 2009-11-18 | 2010-09-08 | 荆州市巨鲸传动机械有限公司 | Wet-type brake of gear box |
| CN201554803U (en) * | 2009-11-19 | 2010-08-18 | 中国重汽集团济南动力有限公司 | Brake for gear box |
| CN201671988U (en) * | 2010-05-14 | 2010-12-15 | 上海东方液压件厂 | Normally-disengaged brake for transmission control |
| CN201934549U (en) * | 2010-12-23 | 2011-08-17 | 泸州邦立减速机有限责任公司 | Running speed reducer brake for service braking |
| CN202012589U (en) * | 2011-01-07 | 2011-10-19 | 索特传动设备有限公司 | Brake of revolution speed reducer |
| CN202946585U (en) * | 2012-11-26 | 2013-05-22 | 陕西法士特齿轮有限责任公司 | Brake device of advanced manufacturing technology (ATM) transmission |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103267128A (en) * | 2013-06-03 | 2013-08-28 | 上海工程机械厂有限公司 | Chain wheel shaft sealing mechanism |
| CN103267128B (en) * | 2013-06-03 | 2015-06-17 | 上海工程机械厂有限公司 | Chain wheel shaft sealing mechanism |
| CN105782288A (en) * | 2016-05-24 | 2016-07-20 | 中国重汽集团大同齿轮有限公司 | Intermediate shaft brake for AMT automatic mechanical speed changer |
| CN106641195A (en) * | 2017-01-23 | 2017-05-10 | 中国第汽车股份有限公司 | Heavy 12-gear AMT transmission assembly |
| CN110886797A (en) * | 2019-12-19 | 2020-03-17 | 东风商用车有限公司 | Novel intermediate shaft brake return mechanism |
| CN111255827A (en) * | 2020-01-17 | 2020-06-09 | 一汽解放汽车有限公司 | AMT intermediate shaft brake steel sheet and friction disc disengage structure |
| 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 |
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| Publication number | Publication date |
|---|---|
| CN102943828B (en) | 2015-05-13 |
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