CN109163031A - A kind of AMT intermediate shaft brake structure - Google Patents
A kind of AMT intermediate shaft brake structure Download PDFInfo
- Publication number
- CN109163031A CN109163031A CN201811125622.1A CN201811125622A CN109163031A CN 109163031 A CN109163031 A CN 109163031A CN 201811125622 A CN201811125622 A CN 201811125622A CN 109163031 A CN109163031 A CN 109163031A
- Authority
- CN
- China
- Prior art keywords
- jackshaft
- intermediate shaft
- amt
- brake
- piston
- 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.)
- Granted
Links
- 230000005540 biological transmission Effects 0.000 claims abstract description 18
- 238000007789 sealing Methods 0.000 claims abstract description 9
- 239000010687 lubricating oil Substances 0.000 claims description 10
- 210000004907 gland Anatomy 0.000 claims description 7
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 4
- 229910052802 copper Inorganic materials 0.000 claims description 4
- 239000010949 copper Substances 0.000 claims description 4
- 230000009471 action Effects 0.000 claims description 2
- 238000001125 extrusion Methods 0.000 claims description 2
- 230000006835 compression Effects 0.000 claims 1
- 238000007906 compression Methods 0.000 claims 1
- 230000008901 benefit Effects 0.000 abstract description 3
- 230000008859 change Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 239000003921 oil Substances 0.000 description 3
- 230000017525 heat dissipation Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000009347 mechanical transmission Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 235000015927 pasta Nutrition 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000012857 repacking Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
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
- F16D55/02—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members
- F16D55/22—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads
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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
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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
- F16D65/78—Features relating to cooling
- F16D65/84—Features relating to cooling for disc brakes
- F16D65/853—Features relating to cooling for disc brakes with closed cooling system
-
- 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
- F16D2121/18—Electric or magnetic
- F16D2121/20—Electric or magnetic using electromagnets
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Braking Arrangements (AREA)
Abstract
A kind of AMT intermediate shaft brake structure, including the jackshaft extended from case of transmission to clutch housing drive end bearing bracket, several frictional disks rotated with axis are arranged at intervals on the periphery of jackshaft extension, the brake disc not rotated with axis is provided between frictional disk, braking air flow inlet is offered on the inner sealing setting piston and clutch housing drive end bearing bracket of clutch housing drive end bearing bracket, the center of piston is connected by the axle center of compressed spring and jackshaft, piston overcomes the elastic force of compressed spring that one end of brake disc is pushed to be combined with frictional disk under gas pressure, the revolving speed of jackshaft is reduced by the torque that the two friction generates, by intermediate shaft speed transducer by collected speed feedback signal to transmission control unit, after jackshaft revolving speed reaches rotating speed of target range, intermediate shaft brake is released and is shifted gears.The present invention takes full advantage of the inner space of case of transmission, have the characteristics that light weight, influenced by external factor it is small.
Description
Technical field
The present invention relates to gearbox fabrication design fields, and in particular to a kind of AMT intermediate shaft brake structure.
Background technique
Mechanical automatic gearbox (Automatic Mechanical Transmission, abbreviation AMT) is in traditional hand
Realize that separation combination and shifting of clutch etc. are operated by electronic control unit on the basis of dynamic gearbox.
AMT needs two axis in main tank to synchronize with jackshaft revolving speed in shift, and during upshift, it needs to two
Axis is braked, and to make jackshaft revolving speed reach rotating speed of target within the shortest time, is completed revolving speed synchronization and is shifted gears.Currently
Structure applied to AMT gearbox brake (Transmission Brake, abbreviation TB) is commonly two kinds, and one is in speed change
Brake structural is used outside tank shell, another kind is that jackshaft is braked in the jackshaft shaft end in bell housing body.
Common AMT intermediate shaft brake structure is all by installing independent speed changer braking additional outside gear box casing
Device structure, this structural volume is larger, and is mounted in gearbox bottom, and working environment is more severe, is easy the change because of external environment
Change and causes failure.TB structure failure caused by order to reduce as far as possible because of external factor causes entire AMT to break down, and needs
A AMT jackshaft spindle nose brake structure being arranged in inside clutch housing is developed, is braked by being installed additional in jackshaft spindle nose
Device can efficiently use the space in bell housing body, mitigate the quality of brake while improving product functional reliability.
Summary of the invention
It is an object of the invention to be directed to above-mentioned the problems of the prior art, a kind of AMT intermediate shaft brake structure is provided, is led to
The spindle nose crossed in jackshaft installs brake disc and frictional disk additional, reduces jackshaft revolving speed by the torque that the two friction generates, realizes
Shift.
To achieve the goals above, the technical solution adopted by the present invention are as follows: including from case of transmission to clutch housing
The jackshaft that drive end bearing bracket extends is arranged at intervals with several frictional disks rotated with axis on the periphery of jackshaft extension, rubs
Wipe the brake disc for being provided with and not rotated between disk with axis, the inner sealing setting piston and bell housing of clutch housing drive end bearing bracket
Braking air flow inlet is offered on body drive end bearing bracket, the center of piston is connected by the axle center of compressed spring and jackshaft, described
Piston overcomes the elastic force of compressed spring that one end of brake disc is pushed to be combined with frictional disk under gas pressure, rubs by the two
Wiping the torque generated reduces the revolving speed of jackshaft, by intermediate shaft speed transducer by collected speed feedback signal to speed change
Device control unit, after jackshaft revolving speed reaches rotating speed of target range, intermediate shaft brake is released and is shifted gears.
It is attached between the extension and frictional disk of the jackshaft by inside and outside matched involute spline.
It is opened on case of transmission and clutch housing there are two oilhole, the oilhole of lower section is used in gearbox
Lubricating oil enter brake structure, lubricating oil is thrown to top in the rotation by frictional disk, and the oilhole for passing through top is arranged
Out.
The periphery of brake disc, which extends outwardly, processes multiple card slots, in brake disc relative to setting on the outside of the frictional disk direction of extrusion
Gland is set, the outside of gland is equipped with thrust ring；Pin is set on card slot, and one end of pin is fixed on clutch housing drive end bearing bracket
On, the other end passes through gland and is fixed on clutch housing, and brake disc is under the common position-limiting action of pin and clutch housing
It is not rotated with axis.
The piston passes sequentially through ejector pin and top cap connects with compressed spring, and spring mounting hole is offered in top cap, in
Between the end of axis offer stepped hole, compressed spring is arranged between spring mounting hole and the internal holes of stepped hole, stepped hole
External holes size is matched with top cap, and top cap can be moved forward and backward in the length range of external holes.
Braking air flow inlet connect air accumulator with gearbox brake solenoid valve by air cleaner, when gearbox needs
When upshift, automatic gear-box control unit opens gearbox brake solenoid valve, and then braking air-flow is made to enter brake structure
It is internal.
Braking airflow channel is machined on the case of transmission, braking air-flow is by braking airflow channel and copper tracheae
It is passed through braking air flow inlet.It is close by the progress of K-type sealing ring between the inner wall of the piston and clutch housing drive end bearing bracket
Envelope.
Compared with prior art, the present invention is with following the utility model has the advantages that by extending jackshaft close to clutch housing
One end, several frictional disks rotated with axis are arranged at intervals on the periphery of jackshaft extension, are arranged between frictional disk
There is the brake disc not rotated with axis, by external air source driving piston-cylinder structure when work, piston overcomes under gas pressure
The elastic force of compressed spring pushes one end of brake disc to be combined with frictional disk, reduces by the torque that the two friction generates intermediate
The revolving speed of axis can shift gears after jackshaft revolving speed reaches rotating speed of target range.The present invention takes full advantage of case of transmission
Inner space, have the characteristics that light weight compared to former brake structural, influenced by external factor it is small, because transmission housing is external
Former AMT gearbox brake structure is lacked, has been conducive to arrangement and popularization when main engine plants matching AMT in this way, enriches AMT product
Technological reserve.
Further, the present invention is in the case where clutch housing change is relatively small, since jackshaft is close to clutch
The space of shell one end is limited, to consider that cannot influence clutch normally separates combination later using the mechanism, therefore to knot
Structure is disposed with more harsh requirement.In addition, frictional disk and the mutual friction of brake disc phase can generate when underway axis braking
A large amount of heat, if heat dissipation is not prompt enough, may cause high oil temperature and imitate frictional disk within the scope of narrow space
Rate reduces, and can not meet the requirement of jackshaft revolving speed reduction in time, extends shift time.Therefore, on case of transmission of the present invention
It opens there are two oilhole, so that the lubricating oil in gearbox is entered brake structure by the oilhole of lower section, frictional disk is turning
Lubricating oil is thrown to top when dynamic, is discharged by the oilhole of top, eliminates independent oil pump.
Detailed description of the invention
Overall structure assembling schematic diagram Fig. 1 of the invention；
Overall structure Fig. 2 of the invention splits explosive view；
The repacking schematic diagram of Fig. 3 clutch housing of the present invention；
Assembling structure front schematic view Fig. 4 of the invention；
Fig. 5 the working principle of the invention block diagram；
In attached drawing: 1- clutch housing drive end bearing bracket；2-K type sealing ring；3- piston；4- ejector pin；5- top cap；6- frictional disk；
7- clutch housing；8- pin；9- thrust ring；10- bearing；11- jackshaft；12- compressed spring；13- gland；14- brake disc；
15- case of transmission；16- oilhole.
Specific embodiment
Present invention will be described in further detail below with reference to the accompanying drawings.
Referring to Fig. 1-2, AMT intermediate shaft brake structure of the present invention includes from case of transmission 15 to clutch housing drive end bearing bracket
1 jackshaft 11 extended, the multiple frictional disks 6 rotated with axis of interval setting, jackshaft on the periphery of 11 extension of jackshaft
It is attached between 11 extension and frictional disk 6 by inside and outside matched involute spline.It is provided with not between frictional disk 6
With the brake disc 14 that axis rotates, the inner sealing of clutch housing drive end bearing bracket 1 is arranged on piston 3 and clutch housing drive end bearing bracket 1
Offer braking air flow inlet, between piston 3 and the inner wall of clutch housing drive end bearing bracket 1 by K-type sealing ring 2 carry out it is close
Envelope.Compressed spring 12 is set between the center of piston 3 and the axle center of jackshaft 11, and piston 3 passes sequentially through ejector pin 4 and top cap 5 connects
Compressed spring 12 is connect, spring mounting hole is offered in top cap 5, the end of jackshaft 11 offers stepped hole, and compressed spring 12 is set
It sets between spring mounting hole and the internal holes of stepped hole, the external holes size of stepped hole is matched with top cap 5, and top cap 5 can be outside
It is moved forward and backward in the length range in portion hole.Piston 3 overcomes the elastic force of compressed spring 12 to push brake disc 14 under gas pressure
One end is combined with frictional disk 6, and the revolving speed of jackshaft 11 is reduced by the torque that the two friction generates.
Referring to Fig. 3, the 1. place in figure is at gas source access, and 2. place is brake structure installation site, referring to Fig. 5, brakes gas
Inflow entrance connect air accumulator with TB solenoid valve by air cleaner, and when gearbox needs upshift, TCU is beaten on suitable opportunity
TB solenoid valve is opened, and then makes to brake the inside that air-flow enters brake structure.Braking airflow channel is machined on case of transmission 15,
Braking air-flow is passed through braking air flow inlet by braking airflow channel and copper tracheae.Because brake is in bell housing body, temperature
It is relatively high, it is easily damaged using plastics tracheae and causes failure, therefore connected at gas source access using copper tracheae.
It can be pushed away after gas flows into cylinder (the small space that clutch housing drive end bearing bracket 1, K-type sealing ring 2 and piston 3 are formed)
The end motion backward of piston 3,3 moving contact of piston is dynamic to the subsequent reforwarding of brake disc 14 not with axis rotation, make brake disc 14 with
The contact of 6 surface of frictional disk, brake disc 14 and frictional disk 6 small range can move axially back and forth, but brake disc 14 can not rotate, and rub
It wipes disk 6 and jackshaft 11 rotates synchronously.Brake disc 11 and the frictional disk 6 of rotation are compressed because of piston 3 generates friction torque, relies on
The negative torque that this friction generates makes jackshaft 11 slow down.It is examined by the intermediate shaft speed transducer being mounted on gear box casing
Jackshaft revolving speed is surveyed, gives speed feedback to transmission control unit (TCU), after jackshaft revolving speed reaches rotating speed of target range,
Intermediate shaft brake releases, and then shifts gears.After brake release, the gas in cylinder is discharged, and piston is in compressed spring 12
End motion forward under effect, the frictional force between frictional disk 6 and brake disc 14 release, and brake stops working.
For assembling pin 8, Fig. 4 gives pin in three holes in three holes and clutch housing drive end bearing bracket 1 in Fig. 3
8 rigging position, the main function of pin 8 are to prevent brake when releasing because the loosening of brake gland leads to 6 He of frictional disk
It is still compacted between brake disc 14 and is not thorough brake releasing, missed properly so as to avoid because jackshaft revolving speed is too low
Shift opportunity.Can clearly it find out from Fig. 4, brake disc 14 protrudes embeddeding clutch in generally circular situation lower edge
The part fallen on shell can prevent brake disc from rotating along axis by the cooperation of this part and pin, to guarantee
Frictional disk 6 and brake disc 14 can normally generate friction and be unlikely to brake disc 14 with friction 6 disks rotation when brake works
And friction torque can not be generated.Because clutch housing structure limits, the design of the brake is not added with oil pump, and take directly with
The mode of gear box casing connection is lubricated and temperature exchange.As shown in figure 4, on clutch housing and gear box casing
There are two aperture, lower section aperture enters in brake structural for lubricating oil in gearbox, and top aperture is because being higher than lubricating oil
Pasta, lubricating oil is discharged from the hole in frictional disk, to achieve the purpose that lubricating oil flow and heat dissipation.
Claims (8)
1. a kind of AMT intermediate shaft brake structure, it is characterised in that: including from case of transmission (15) to clutch housing drive end bearing bracket
(1) jackshaft (11) extended is arranged at intervals with several frictions rotated with axis on the periphery of jackshaft (11) extension
Disk (6) is provided with the brake disc (14) not rotated with axis, the inner sealing of clutch housing drive end bearing bracket (1) between frictional disk (6)
Braking air flow inlet is offered in setting piston (3) and clutch housing drive end bearing bracket (1), the center of piston (3) passes through compression bullet
Spring (12) is connect with the axle center of jackshaft (11), and the piston (3) overcomes the elastic force of compressed spring (12) under gas pressure
It pushes the one end of brake disc (14) to be combined with frictional disk (6), reduces jackshaft (11) by the torque that the two friction generates
Revolving speed, by intermediate shaft speed transducer by collected speed feedback signal to transmission control unit, when jackshaft turns
After speed reaches rotating speed of target range, intermediate shaft brake is released and is shifted gears.
2. AMT intermediate shaft brake structure according to claim 1, it is characterised in that: the extension of the jackshaft (11)
Divide and is attached between frictional disk (6) by inside and outside matched involute spline.
3. AMT intermediate shaft brake structure according to claim 1, it is characterised in that: case of transmission (15) and clutch
It is opened on shell (7) there are two oilhole (16), lubricating oil of the oilhole (16) of lower section in gearbox enters system
Lubricating oil is thrown to top in the rotation by dynamic structure, frictional disk (6), is discharged by the oilhole (16) of top.
4. AMT intermediate shaft brake structure according to claim 1, it is characterised in that: the outer circumferential direction of the brake disc (14)
Outer extension is machined with multiple card slots, gland (13) is arranged relative to the outside of frictional disk (6) direction of extrusion in brake disc (14), pressure
Thrust ring (9) are provided on the outside of lid (13)；Pin (8) are set on the card slot, one end of pin (8) is fixed on clutch
On housing forward end lid (1), the other end passes through gland (13) and is fixed on clutch housing (7), and the brake disc (14) is in pin
It is not rotated with axis under sub (8) and the common position-limiting action of clutch housing (7).
5. AMT intermediate shaft brake structure according to claim 1, it is characterised in that: the piston (3) passes sequentially through top
Pin (4) and top cap (5) connect with compressed spring (12), spring mounting hole are offered in top cap (5), the end of jackshaft (11) is opened
Equipped with stepped hole, compressed spring (12) is arranged between spring mounting hole and the internal holes of stepped hole, and the external holes of stepped hole are big
Small to match with top cap (5), top cap (5) can be moved forward and backward in the length range of external holes.
6. AMT intermediate shaft brake structure according to claim 1, it is characterised in that: the braking air flow inlet passes through
Air cleaner connect air accumulator with gearbox brake solenoid valve, and when gearbox needs upshift, automatic gear-box control is single
Member opens gearbox brake solenoid valve, and then makes to brake the inside that air-flow enters brake structure.
7. AMT intermediate shaft brake structure according to claim 6, it is characterised in that: on the case of transmission (15)
It is machined with braking airflow channel, braking air-flow is passed through braking air flow inlet by braking airflow channel and copper tracheae.
8. AMT intermediate shaft brake structure according to claim 1, it is characterised in that: the piston (3) and bell housing
It is sealed between the inner wall of body drive end bearing bracket (1) by K-type sealing ring (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811125622.1A CN109163031B (en) | 2018-09-26 | 2018-09-26 | AMT jackshaft braking structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811125622.1A CN109163031B (en) | 2018-09-26 | 2018-09-26 | AMT jackshaft braking structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109163031A true CN109163031A (en) | 2019-01-08 |
| CN109163031B CN109163031B (en) | 2024-01-02 |
Family
ID=64892636
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811125622.1A Active CN109163031B (en) | 2018-09-26 | 2018-09-26 | AMT jackshaft braking structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109163031B (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN110701260A (en) * | 2019-09-29 | 2020-01-17 | 宝鸡法士特齿轮有限责任公司 | AMT transmission assembly |
| CN111336194A (en) * | 2020-03-09 | 2020-06-26 | 安徽理工大学 | Controllable electromagnetic normally closed disc brake |
| CN112096858A (en) * | 2020-09-18 | 2020-12-18 | 陕西法士特齿轮有限责任公司 | Integrated automatically controlled mechanical type automatic gearbox |
| CN112096857A (en) * | 2020-09-18 | 2020-12-18 | 陕西法士特齿轮有限责任公司 | High-integration-level electric control mechanical automatic transmission |
| CN113847422A (en) * | 2021-09-18 | 2021-12-28 | 陕西法士特齿轮有限责任公司 | Torque control method and system of AMT intermediate shaft brake |
| CN117685315A (en) * | 2024-02-02 | 2024-03-12 | 浙江万里扬股份有限公司杭州分公司 | Power takeoff structure of AMT transmission supporting driving power take-off |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN110701260A (en) * | 2019-09-29 | 2020-01-17 | 宝鸡法士特齿轮有限责任公司 | AMT transmission assembly |
| CN111336194A (en) * | 2020-03-09 | 2020-06-26 | 安徽理工大学 | Controllable electromagnetic normally closed disc brake |
| CN112096858A (en) * | 2020-09-18 | 2020-12-18 | 陕西法士特齿轮有限责任公司 | Integrated automatically controlled mechanical type automatic gearbox |
| CN112096857A (en) * | 2020-09-18 | 2020-12-18 | 陕西法士特齿轮有限责任公司 | High-integration-level electric control mechanical automatic transmission |
| CN112096858B (en) * | 2020-09-18 | 2022-03-29 | 陕西法士特齿轮有限责任公司 | Integrated automatically controlled mechanical type automatic gearbox |
| CN113847422A (en) * | 2021-09-18 | 2021-12-28 | 陕西法士特齿轮有限责任公司 | Torque control method and system of AMT intermediate shaft brake |
| CN117685315A (en) * | 2024-02-02 | 2024-03-12 | 浙江万里扬股份有限公司杭州分公司 | Power takeoff structure of AMT transmission supporting driving power take-off |
| CN117685315B (en) * | 2024-02-02 | 2024-05-10 | 浙江万里扬股份有限公司杭州分公司 | Power takeoff structure of AMT transmission supporting driving power take-off |
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| CN109163031B (en) | 2024-01-02 |
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