CN206468755U - A kind of normally closed type driving speed reducer - Google Patents
A kind of normally closed type driving speed reducer Download PDFInfo
- Publication number
- CN206468755U CN206468755U CN201720166340.0U CN201720166340U CN206468755U CN 206468755 U CN206468755 U CN 206468755U CN 201720166340 U CN201720166340 U CN 201720166340U CN 206468755 U CN206468755 U CN 206468755U
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- spring
- normally closed
- closed type
- ring
- splined shaft
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Abstract
The utility model provides a kind of normally closed type driving speed reducer, including three funtion parts：Running part；Brake portion；Brake release part.Running part includes two-stage planet row, wheel hub；Brake portion include input shaft, gland, piston, friction plate group and with oil cylinder that secondary planet frame is entirety；Brake release part includes the first spring, splined shaft, push rod, one-level sun gear, end cap and baffle plate with through hole.Input shaft and deep groove ball bearing, back-up ring are assembled on brake portion and the shared secondary planet frame of running part by the normally closed type driving speed reducer that the utility model is provided first, are then directed to the standard component such as set, piston, second spring, gland and O-ring, back-up ring and are assemblied in secondary planet frame inner chamber；Secondly the first spring, splined shaft and wheel hub, secondary planet wheel, primary planet row and the shared ring gear of I and II planet row are assembled on secondary planet frame；Finally end cap, top cover and baffle plate are assembled on ring gear.
Description
Technical field
The utility model is related to a kind of normally closed type driving speed reducer.
Background technology
Normally closed type driving speed reducer is to impart power to tire so as to drive the device that complete machine is walked as its name suggests, this
Reductor mainly realizes two functions：1 power is transmitted, the function of driving complete machine walking；2 power cuts, make complete machine remains stationary
Function.Current this reductor applies quite varied in engineering machinery field, but this normally closed type reductor has one to lack
Point：Once complete machine breaks down can not provide the failure of hydraulic oil to reductor, normally closed type wet braking reductor will be braked,
So as to cause complete machine not move.
The content of the invention
The purpose of this utility model is to provide a kind of normally closed type driving speed reducer, and it includes three funtion parts：Driving section
Point；Brake portion；Brake release part.Running part includes two-stage planet row, wheel hub；Brake portion include input shaft, gland,
Piston, friction plate group and with oil cylinder that secondary planet frame is entirety；Brake release part includes the first spring, spline
Axle, push rod, one-level sun gear, end cap and baffle plate with through hole.
To reach above-mentioned purpose, the normally closed type driving speed reducer that the utility model is provided is first by input shaft and deep-groove ball axle
Hold, back-up ring is assembled to brake portion and the shared secondary planet frame of running part on, be then directed to set, piston, second spring,
The standard component such as gland and O-ring, back-up ring is assemblied in secondary planet frame inner chamber；Secondly by the first spring, splined shaft and wheel hub, two
Level planetary gear, primary planet row and the shared ring gear of I and II planet row are assemblied on secondary planet frame；Finally by end cap,
Top cover and baffle plate are assembled on ring gear.
Normally closed type reductor in the utility model is running into machine failure, can during the situation that brake portion can not be opened
To remove and reversely install baffle plate, the boss on baffle plate kills push rod, and push rod props up spline through one-level sun gear through hole
Axle, splined shaft extrusion spring so that splined shaft produces a certain amount of displacement in the axial direction, cause the internal spline of splined shaft with
One-level sun gear external splines is disengaged, and then cuts off the connection releasing braking of brake portion and running part, enables wheel hub free
Rotate, complete machine can normally be run.
Brief description of the drawings
Fig. 1 provides a kind of specific implementation structural representation of reductor for the utility model；
Fig. 2 is running part structural representation of the present utility model；
Fig. 3 is brake portion structural representation of the present utility model；
Fig. 4 is brake release part-structure schematic diagram of the present utility model.
In Fig. 1-4：1. the lip-type seal of 5. gland of secondary planet wheel carrier 2. outside framework oil seal, 3. wheel hub, 4. taper roll bearing 6.
Circle
7. the deep groove ball bearing 14. of 8. guide sleeve of piston, 9. 12. rim bolt of input shaft 10.O shapes 11. locking nut of circle 13.
The secondary solar gear 22. of 17. ring gear of back-up ring 15. back-up ring, 16. secondary planet wheel, 18. 20. back-up ring of primary planet wheel 19.O shapes circle 21.
The screw plug of 29. end cap of back-up ring 23. push rod, 24. one-level sun gear, 25. baffle plate, 26. hole back-up ring, 27. hole back-up ring, 28. primary planet carrier 30.
31. the driven disc 35.O shape circle 36.O shape circle baffle plate 37.O shape circle 38.O shapes circle of 32. first spring of splined shaft, 33. rotating plate 34. is kept off
The screw of 41. bolt of plate 39. second spring, 40. back-up ring 42..
Embodiment
The utility model is illustrated with reference to the accompanying drawings and examples.
Core of the present utility model is to provide a kind of normally closed type driving speed reducer, and the driving speed reducer is by three funtion parts
Composition, be respectively：Running part, brake portion and brake release part.It is one kind provided by the present invention with reference to Fig. 1-4, Fig. 1
The structural representation of normally closed type driving speed reducer；Fig. 2 is connection of the running part including I and II planet row and wheel hub 3 in Fig. 1
Structural representation；Fig. 3 is the secondary planet frame 16 that brake portion includes sharing with running part in Fig. 1, gland 5, piston 7, rubbed
The attachment structure schematic diagram of pad group and input shaft 9；Fig. 4 is that the formulation releasing portion point in Fig. 1 includes input shaft 9, the first bullet
Spring, one-level sun gear 24, secondary solar gear, push rod 23, the attachment structure schematic diagram of baffle plate and end cap 29.Below for this 3
Mechanism is planted to be illustrated.
Running part：This is two-stage planetary reduction mechanism, and its drive path is input shaft 9 → splined shaft, 31 → one-level sun
24 → primary planet carrier, 28 → secondary solar gear, 21 → secondary planet wheel, 16 → ring gear 17 is taken turns, wherein primary planet row is the sun
Wheel input planet carrier output, secondary planet row is sun gear input ring gear output.One or two grades of ring gears 17 are shared, while internal tooth
Circle 17 outputs power as output element, and such a structure has two kinds of advantages：1. compact conformation, intensity is high；2. one or two grades are compared
Ring gear separate structure effectively increases gearratio, improves transmission efficiency.
Brake portion：The part be normally closed type wet braking structure, it by shared with running part secondary planet frame 16,
Gland 5, piston 7, second spring 39, guide sleeve 8, friction plate group, input shaft 9 are constituted.Wherein 10 second are designed with piston 7
The mounting hole of spring 39, the spring that can match varying number according to user's request meets different works to reach different braking effects
Condition demand.
Brake release part：This part by input shaft 9, the first spring 32, splined shaft 31, one-level sun gear 24, push rod 23,
O-ring, baffle plate 25, end cap 29 are constituted.Baffle plate boss is installed outwardly in normal work, now one in the presence of the first spring 32
The level external splines of sun gear 24 is engaged with the Inner splines of splined shaft 31, and power is transmitted through running part.When because abnormal conditions cause it is normally closed
Rotating vane type brake can not be opened, reductor locking, when complete machine can not be moved, you can reversely pacify the baffle plate 25 of brake portion
Dress, i.e., boss is installed inwardly, and the boss of baffle plate 25 puts in the high groove of section, extrudes push rod 23, and push rod 23 is applied to splined shaft 31, flower
Key axle 31 extrudes the first spring 32, compresses the first spring 32, splined shaft 31 is moved axially and departed from one-level sun gear 24.This
Although when braking can not open, one-level sun gear 24 departs from power transfer path, and clutch end is just free to rotate, real
The existing emergent movement of complete machine.
Claims (4)
1. a kind of normally closed type driving speed reducer, it is characterised in that including running part, brake portion and brake release part,
Running part includes two-stage planet row, wheel hub；
Brake portion include input shaft, gland, piston, friction plate group and with oil cylinder that secondary planet frame is entirety；
Brake release part includes the first spring, splined shaft, push rod, one-level sun gear, end cap and baffle plate with through hole.
2. a kind of normally closed type driving speed reducer according to claim 1, it is characterised in that running part：This is two grades of rows
Star reducing gear, its drive path is input shaft → splined shaft → one-level sun gear → primary planet carrier → secondary solar gear → bis-
Level planetary gear → ring gear, wherein primary planet row are sun gear input planet carrier output, and secondary planet row is sun gear input
Ring gear is exported, and one or two grades of ring gears are shared, while ring gear outputs power as output element.
3. a kind of normally closed type driving speed reducer according to claim 1, it is characterised in that brake portion：The part is normal
Enclosed wet braking structure, it by the secondary planet frame shared with running part, gland, piston, second spring, guide sleeve, rub
Pad group, input shaft composition, are wherein designed with 10 second spring mounting holes on piston.
4. a kind of normally closed type driving speed reducer according to claim 1, it is characterised in that brake release part：This part
It is made up of input shaft, the first spring, splined shaft, one-level sun gear, push rod, O-ring, baffle plate, end cap, baffle plate is convex in normal work
Platform is installed outwardly, and now one-level sun gear external splines is engaged with splined shaft Inner splines in the presence of the first spring, and power is through passing
Dynamic part is transmitted, and when causing normally closed type wet brake not open because of abnormal conditions, reductor locking, complete machine can not be moved
When, you can the baffle plate of brake portion is reversely installed, i.e., boss is installed inwardly, baffle plate boss puts in the high groove of section, extruding top
Bar, push rod is applied to splined shaft, and splined shaft extrudes the first spring, makes the first spring-compressed, splined shaft axial movement and and one-level
Sun gear departs from.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720166340.0U CN206468755U (en) | 2017-02-23 | 2017-02-23 | A kind of normally closed type driving speed reducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720166340.0U CN206468755U (en) | 2017-02-23 | 2017-02-23 | A kind of normally closed type driving speed reducer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206468755U true CN206468755U (en) | 2017-09-05 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720166340.0U Active CN206468755U (en) | 2017-02-23 | 2017-02-23 | A kind of normally closed type driving speed reducer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206468755U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106678285A (en) * | 2017-02-23 | 2017-05-17 | 徐州徐工传动科技有限公司 | Normally closed walking speed reducer |
-
2017
- 2017-02-23 CN CN201720166340.0U patent/CN206468755U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106678285A (en) * | 2017-02-23 | 2017-05-17 | 徐州徐工传动科技有限公司 | Normally closed walking speed reducer |
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