CN106641161B - A kind of end drive mechanism and bull-dozer - Google Patents
A kind of end drive mechanism and bull-dozer Download PDFInfo
- Publication number
- CN106641161B CN106641161B CN201710123366.1A CN201710123366A CN106641161B CN 106641161 B CN106641161 B CN 106641161B CN 201710123366 A CN201710123366 A CN 201710123366A CN 106641161 B CN106641161 B CN 106641161B
- Authority
- CN
- China
- Prior art keywords
- gear
- level
- unit
- brake
- spline
- 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.)
- Active
Links
- 230000007246 mechanism Effects 0.000 title claims abstract description 28
- 230000005540 biological transmission Effects 0.000 claims abstract description 64
- 230000009467 reduction Effects 0.000 claims abstract description 53
- 230000008878 coupling Effects 0.000 claims abstract description 10
- 238000010168 coupling process Methods 0.000 claims abstract description 10
- 238000005859 coupling reaction Methods 0.000 claims abstract description 10
- 239000007787 solid Substances 0.000 claims description 2
- 238000012423 maintenance Methods 0.000 abstract description 8
- 238000010586 diagram Methods 0.000 description 9
- 239000003921 oil Substances 0.000 description 7
- 230000002706 hydrostatic effect Effects 0.000 description 6
- 238000007789 sealing Methods 0.000 description 5
- 230000001133 acceleration Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000010720 hydraulic oil Substances 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000000979 retarding effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Classifications
-
- 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
- F16H37/00—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00
- F16H37/02—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings
- F16H37/04—Combinations of toothed gearings only
- F16H37/041—Combinations of toothed gearings only for conveying rotary motion with constant gear ratio
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F3/00—Dredgers; Soil-shifting machines
- E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
- E02F3/76—Graders, bulldozers, or the like with scraper plates or ploughshare-like elements; Levelling scarifying devices
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Retarders (AREA)
Abstract
The present invention relates to bull-dozer technical field more particularly to a kind of whole drive mechanisms and bull-dozer.A kind of end drive mechanism, including brake unit and transmission system, the transmission system includes primary speed-down unit, double reduction unit and three-level deceleration unit, the primary speed-down unit includes two-stage spur reduction structure, the double reduction unit includes the first planet row structure, the three-level deceleration unit includes the second planet row structure, and the brake unit is connected to the transmission end of motor.Further relate to a kind of bull-dozer, comprising: provide the engine, shaft coupling and the pump for being connected with motor of power output, the shaft coupling is separately connected engine and pump, and the motor is connected with the whole drive mechanism.Brake unit, primary speed-down unit, double reduction unit, three-level deceleration unit are fixedly connected as one big module with bull-dozer mainframe, are dismounted easy to maintenance；Can be realized bigger transmission ratio, transmitting torque is steady, and it is economical and practical, securely and reliably.
Description
Technical field
The present invention relates to bull-dozer technical field more particularly to a kind of whole drive mechanisms and bull-dozer.
Background technique
There are two types of forms for the final transmission device of bull-dozer: one is second level straight spur gears to be driven eventually, and another kind is capable
Star gear type is driven eventually.The former is traditional two-stage spur reduction structure, and the structure is simple, and structure size is big, components stress
It is unbalanced, and it is unable to modularized design, maintenance is inconvenient.Double reduction knot is generally taken in transmission to the latter's planetary gear type at present eventually
Structure, level-one are spur reduction structure, and level-one is planet row structure to increase reduction ratio, and planet row structure has on the outside of tooth block
With two kinds of structures on the inside of tooth block, it is smaller that the characteristics of this structure type, is that module can design, and structure size space is small,
Components stress equalization, torque transmitting is relatively steady, there is two kinds of structure types of modularization and non-modularization, the dress of modular construction
With maintenance relatively convenient.
The final transmission device of traditional bull-dozer two-stage spur reduction structure, the structure is simple, and structure size is big, components by
Power is unbalanced, and is unable to modularized design, and maintenance is inconvenient.It is traditional with the development of high-power hydrostatic transmissions bull-dozer
Planet row structure can not meet the requirement of more big retarding ratio, there is an urgent need to obtain bigger reduction ratio, and need to carry out modularization
Design.Patent " it is a kind of for bull-dozer or buck raker planetary gear type final drive (patent No.:
ZL201220634254.5) " although being driven for level-one straight-tooth, primary planet pinion, there is no brake unit, while planet
It ranks on the outside of tooth block, is not able to satisfy the requirement of high-power hydrostatic transmissions bull-dozer.A kind of patent " end drive mechanism and soil-shifting
Machine (patent No.: ZL201520129300.X) " is a kind of two-stage straight tooth driving structure, and does not have brake, also without modularization
Design.Patent " a kind of bulldozer final drive structure (patent No.: ZL201420384862.4) " is although be level-one straight-tooth, level-one row
Star gear drive, but there is no brake unit, while planet row is located on the inside of tooth block, can not meet the hydrostatic biography of high-power
The requirement of dynamic bull-dozer.Patent " wheeled tractor be finally driven double-pinion planetary arranging device (patent No.:
ZL201520578489.0) " though being two-stage planet row deceleration device, it does not have brake, and it is coaxial to output and input power,
Power is transmitted without level-one straight-tooth simultaneously.Patent " a kind of two-stage planetary final drive component (patent No.: ZL02142618.X) "
Although being also two-stage planet row deceleration device, also there is brake unit, the sun wheel speed of two planet rows is identical, makes simultaneously
The gear ring of dynamic device braking right side planet row, the gear ring output power of left side planet row, also without first order spur reduction structure, and
It is herein three-level deceleration mechanism, reduction ratio is big, and brake level-one driving wheel, the planet carrier of the first planet row and the second row
The sun wheel speed of star row is identical, and structure is not identical.
Summary of the invention
It is an object of the invention to propose a kind of whole drive mechanism, subtracted by brake unit, primary speed-down unit, second level
Fast unit, three-level deceleration unit are fixedly connected as one big module with bull-dozer mainframe, are dismounted easy to maintenance；Primary speed-down
Unit, double reduction unit and three-level deceleration unit these three units are integrally used as deceleration mechanism, and primary speed-down unit is two-stage
Spur reduction structure, double reduction unit and three-level deceleration unit are planet row structure, can be realized bigger transmission ratio.
To achieve this purpose, the present invention adopts the following technical scheme:
A kind of end drive mechanism, including brake unit and transmission system, the transmission system include primary speed-down unit,
Double reduction unit and three-level deceleration unit, the primary speed-down unit include two-stage spur reduction structure, the double reduction
Unit includes the first planet row structure, and the three-level deceleration unit includes the second planet row structure, the brake unit connection
In the transmission end of motor.
As one of the preferred embodiments of the present invention, the primary speed-down unit includes level-one driving gear, level-one quilt
Moving gear and gear hub, the level-one driving gear and the external toothing of level-one driven gear are fixedly connected on level-one driven gear
With the gear hub of the level-one driven gear, the gear hub and the level-one driven gear are bolted to connection,
The level-one driving gear relies on the two level-one bearing supports in left and right by the fixing bearing support of left and right two, the gear hub,
It is meshed by its internal spline with the double reduction unit on the gear hub.
As one of the preferred embodiments of the present invention, the double reduction unit includes the first sun gear, the first planet
Wheel, first planet carrier and the first planetary ring gear, the shaft of first sun gear are nibbled by the internal spline of external splines and gear hub
It closes, the gear of first sun gear and multiple first planetary gear external toothings, in first planetary gear and the first planetary ring gear
Engagement, first planetary gear are arranged in first planet carrier, and described first planet carrier one end is set in the by secondary bearing
In the shaft of one sun gear, the other end is engaged by spline with three-level deceleration unit.
As one of the preferred embodiments of the present invention, the three-level deceleration unit includes the second sun gear, the second planet
Frame, the second planetary gear and the second planetary ring gear, second sun gear are engaged with first planet carrier by second level spline, and described the
Two sun gears and multiple second planetary gear external toothings, second planetary gear and the second planetary ring gear internal messing, second row
Star gear ring is mounted on the second planet carrier, and second planet carrier one end is set in the shaft of the second planetary gear by three-level bearing
On, the other end is engaged by spline with driving unit.
As one of the preferred embodiments of the present invention, the driving unit includes terminal pad, and the terminal pad passes through drive
Dynamic spline engagement has sprocket hub, with teeth piece is connected on the sprocket hub, the inside of the sprocket hub is supported on by connecting bearing
Eventually on transmission outer housing, the terminal pad is engaged by spline with the second planet carrier.
As one of the preferred embodiments of the present invention, the tooth block is located at the inner or outer side of three-level deceleration unit.
As one of the preferred embodiments of the present invention, the brake unit includes being connect by spline housing with motor
Brake, the inside and outside of the spline housing are respectively arranged with internal spline and external tooth, the motor and level-one driving gear
Shaft is meshed with internal spline, and the brake is meshed with external tooth.
As one of the preferred embodiments of the present invention, the brake includes the arrester shell for being provided with braking cavity
Body, the braking cavity are set on spline housing, the brake empty it is intracavitary along spline housing radial direction from-inner-to-outer be disposed with
Friction plate, outer tooth plate and the ring gear being meshed with outer tooth plate that the external tooth of spline housing is meshed, the friction plate, outer tooth plate and
The side of ring gear is pressed on transmission outer housing eventually, and the other side has compressed pressing plate, and disc spring, institute have been compressed on the outside of the pressing plate
It states pressing plate to be connected on piston by retaining ring, the piston is set in outside spline housing and along spline housing axial stretching, described interior
The top of gear ring and disc spring is each attached on transmission outer housing eventually, and the circle that bolt passes through can be accommodated by offering on the ring gear
Hole, the ring gear, brake casing are fixed on transmission outer housing eventually by washer and bolt.
As one of the preferred embodiments of the present invention, the reduction ratio being driven eventually isWherein Z1The number of teeth, Z for level-one driving gear2For level-one driven gear the number of teeth,
Zt1The number of teeth, Z for the first sun gearq1The number of teeth, Z for the first planetary ring geart2The number of teeth, Z for the second sun gearq2For the second row
The number of teeth of star gear ring.
A kind of bull-dozer, comprising: the engine, shaft coupling and the pump for being connected with motor of power output, the shaft coupling are provided
Device is separately connected engine and pump, and the motor is connected with the whole drive mechanism described at least one.
The utility model has the advantages that brake unit, primary speed-down unit, double reduction unit, three-level deceleration unit are big as one
Module is fixedly connected with bull-dozer mainframe, is dismounted easy to maintenance；Primary speed-down unit, double reduction unit and three-level are slowed down single
These three first units are integrally used as deceleration mechanism, and primary speed-down unit is two-stage spur reduction structure, double reduction unit and three
Grade deceleration unit is planet row structure, can be realized bigger transmission ratio, and playing the role of, which reduces speed, increases torque, transmitting
Torque is steady, can carry bigger torque, economical and practical, securely and reliably, meets the need of high-power hydrostatic transmissions reduction ratio
It asks.
Detailed description of the invention
Fig. 1 is the structural schematic diagram for the whole transmission agency module that the embodiment of the present invention 1 provides；
Fig. 2 is the structural schematic diagram being driven eventually that the embodiment of the present invention 1 provides；
Fig. 3 is the structural schematic diagram for the brake that the embodiment of the present invention 1 provides；
Fig. 4 is the structural schematic diagram for the bull-dozer that the embodiment of the present invention 2 provides；
Fig. 5 is the structural schematic diagram of the walking operation state for the bull-dozer that the embodiment of the present invention 2 provides；
Fig. 6 is the walking manipulation open locking flow diagram for the bull-dozer that the embodiment of the present invention 2 provides.
In figure:
1, brake unit；2, transmission system；3, driving unit；4, motor；5, engine；6, shaft coupling；9, controller；
11, spline housing；12, brake；21, primary speed-down unit；22, double reduction unit；23, three-level deceleration unit；31, it connects
Disk；33, sprocket hub；34, tooth block；41, left motor；42, right motor；43, the first sealing ring；71, rear pump；72, front pump；81, left
Transmission eventually；82, right transmission eventually；91, walking handle；92, display；93, left brake is latched judgment module；94, right brake
It is latched judgment module；101, it is driven outer housing eventually；121, brake casing；122, friction plate；123, outer tooth plate；124, internal tooth
Circle；125, pressing plate；126, disc spring；127, piston；128, respirator；129, retaining ring；211, level-one driving gear；212, level-one quilt
Moving gear；213, gear hub；214, level-one bearing；215, fixing bearing；221, the first sun gear；222, the first planetary gear；
223, first planet carrier；224, the first planetary ring gear；226, secondary bearing；231, the second sun gear；232, the second planet carrier；
233, the second planetary gear；234, the second planetary ring gear；1271, the second sealing ring；1272, Glais ring；2151, gasket is adjusted；
2152, adjustment plate.
Specific embodiment
To further illustrate the technical scheme of the present invention below with reference to the accompanying drawings and specific embodiments.
Embodiment 1
The present invention provides a kind of whole drive mechanisms, as shown in Figure 1-3, include brake unit 1 and transmission system 2, institute
Stating transmission system 2 includes primary speed-down unit 21, double reduction unit 22 and three-level deceleration unit 23, the primary speed-down unit
21 include two-stage spur reduction structure, and the double reduction unit 22 includes the first planet row structure, the three-level deceleration unit
23 include the second planet row structure, and the brake unit 1 is connected to the transmission end of motor 4.
Brake unit 1, primary speed-down unit 21, double reduction unit 22, three-level deceleration unit 23 are used as a big mould
Block is fixedly connected with bull-dozer mainframe, is dismounted easy to maintenance；Primary speed-down unit 21, double reduction unit 22 and three-level are slowed down
These three units of unit 23 are integrally used as deceleration mechanism, and primary speed-down unit 21 is two-stage spur reduction structure, double reduction list
Member 22 and three-level deceleration unit 23 are planet row structure, can be realized bigger transmission ratio, and playing, which reduces speed, increases torque
Effect, transmitting torque it is steady, bigger torque can be carried, it is economical and practical, securely and reliably, meet high-power hydrostatic transmissions
The demand of reduction ratio.
When it is implemented, by taking the bull-dozer includes two whole drive mechanisms as an example, described two end drive mechanism difference
It is driven 81 and right transmission 82 eventually eventually to be left, and left transmission 81 eventually and the opposite car bodies of right whole transmission 82 are centrosymmetrically arranged, with left end
For transmission 81, the brake unit 1 includes the brake 12 being connect by spline housing 11 with motor 4, the spline housing 11
It is inside and outside be respectively arranged with internal spline and external tooth, the shaft of the motor 4 and level-one driving gear 211 is and internal spline
It being meshed, the internal spline includes left inside spline and right internal spline, the shaft and left inside spline engagement of the motor 4, and described one
The shaft of grade driving gear 211 is engaged with right internal spline, and the brake 12 is meshed with external tooth.Brake unit 1 is by opening
Lock and blocking function realize vehicle advance, retrogressing, acceleration and deceleration, left steering and right turn function.
The primary speed-down unit 21 includes level-one driving gear 211, level-one driven gear 212 and gear hub 213, described
Level-one driving gear 211 and 212 external toothing of level-one driven gear, the both ends of the level-one driving gear 211 pass through fixation respectively
Bearing 215 supports, and is fixedly connected with the gear hub 213 coaxial with the level-one driven gear 212 on level-one driven gear 212,
The gear hub 213 and level-one driven gear 212 are bolted to connection, and the gear hub 213 relies on left and right two one
Grade bearing 214 supports, and is meshed by its internal spline with the double reduction unit 22 on the gear hub 213.
The double reduction unit 22 includes the first sun gear 221, the first planetary gear 222, first planet carrier 223 and first
Planetary ring gear 224, the gear of first sun gear 221 and three 222 external toothings of the first planetary gear, first planetary gear
222 and 224 internal messing of the first planetary ring gear, the first planetary ring gear 224 is bolted on transmission outer housing 101 eventually.Three
A first planetary gear 222 is arranged in first planet carrier 223, and 223 left end of first planet carrier relies on secondary bearing 226
Support, 223 left end of first planet carrier are set in the shaft of the first sun gear 221 by secondary bearing 226, and described first
The right end of planet carrier 223 is engaged by second level spline with the second sun gear 231.The quantity of first planetary gear 222 include but
It is not limited to three.
The three-level deceleration unit 23 includes the second sun gear 231, the second planet carrier 232, the second planetary gear 233 and second
Planetary ring gear 234, second sun gear 231 and multiple second planetary gear, 233 external toothings, second planetary gear 233 and the
Two planetary ring gears, 234 internal messing, the second planetary ring gear 234 are bolted on transmission outer housing 101 eventually, second row
Star-wheel 233 is mounted on the second planet carrier 232, and 232 right end of the second planet carrier passes through the terminal pad of spline and driving unit 3
31 engagements, the terminal pad 31 are engaged with sprocket hub 33.
The driving unit 3 includes terminal pad 31, and the terminal pad 31 is described by driving spline engagement to have sprocket hub 33
With teeth piece 34 is bolted to connection on sprocket hub 33.The connection bearing support that the sprocket hub 33 passes through the side that sets within it
On transmission outer housing 101 eventually, the tooth block 34 pushes the operating of bull-dozer crawler belt under the drive of sprocket hub 33, and tooth block 34 can be with
It is plain edition tooth block, is also possible to wetland type tooth block, the tooth block 34 can be mounted on according to the needs of structure space and function
The inside of three-level deceleration unit 23 also may be mounted at the outside of three-level deceleration unit 23.Driving unit 3 is used as power output portion
Point, crawler travel is driven by tooth block 34, realizes bull-dozer items walking function.
When it is implemented, motor 4 drives level-one driving gear 211 to rotate under the effect of spline housing 11, level-one driving gear
The level-one driven gear 212 of 211 drives and its external toothing rotates, and kinetic energy is sent to the first sun gear 221 by gear hub 213,
First sun gear, 221 input power, 223 output power of first planet carrier to the second sun gear 231, second sun gear
231 input powers, 232 output power of the second planet carrier to terminal pad 31, terminal pad 31 pass through 33 sliding tooth block of sprocket hub
34 push crawler belt rotation.
Brake 12 has spring type brake or disk spring type brake, the former is brake open in usual, and the latter is normally closed type
Brake.Normally closed brake refers to when not establishing oil pressure, makes friction plate and external tooth plate closing by disc spring force, establishes oil
It is pushed by piston so that friction plate and the separation of outer tooth plate after pressure.The preferred brake 12 is normally closed disk spring type clutch,
Braking locking refers to that the left side passes the friction plate 122 in structure 81 eventually and outer tooth plate 123 is closed；Braking unlock in the present invention refers to
Friction plate 122 and outer tooth plate 123 separate.
Preferably, the brake 12 includes the brake casing 121 for being provided with braking cavity, and the braking cavity is arranged
On spline housing 11, the brake empty is intracavitary to be disposed with the external tooth phase with spline housing 11 along the radial from-inner-to-outer of spline housing 11
Friction plate 122, outer tooth plate 123 and the ring gear 124 being meshed with outer tooth plate 123 of engagement, the friction plate 122, outer tooth plate
123 and ring gear 124 side be pressed on eventually transmission outer housing 101 on, the other side has compressed pressing plate 125, the pressing plate 125
Outside has compressed disc spring 126, and the outside of disc spring 126 is pressed on brake casing 121, and the pressing plate 125 is connected by retaining ring 129
It connects on piston 127, the piston 127 is set in 11 outside of spline housing and along 11 axial stretching of spline housing, the ring gear 124
It is each attached on brake casing 121 with the top of disc spring 126, bolt can be accommodated by, which offering on the ring gear 124, passes through
Circular hole, the ring gear 124, brake casing 121 by washer and bolt be fixed on eventually transmission outer housing 101 on.
When it is implemented, the motor 4 is bolted on transmission outer housing 101 eventually, the motor 4 and transmission eventually
It is tightly connected between outer housing 101 by the first sealing ring 43, the right upper portion of the brake casing 121 passes through screw or spiral shell
It tethers and is connected to respirator 128, there is hydraulic oil duct, the brake empty in the brake casing 121 inside the brake casing 121
It is sealed between chamber and piston 127 by the second sealing ring 1271 and Glais ring 1272, second sealing ring 1271 is located at braking
In the seal groove of device shell 121, the Glais ring 1272 is located in the seal groove of piston 127, the left side setting of the pressing plate 125
There is retaining ring 129, retaining ring 129 is located in the left end peripheral groove of piston 127, the quantity foundation of the friction plate 122 and outer tooth plate 123
The size of required brake force determines that the circular hole that bolt passes through can be accommodated by offering on the ring gear 124, the ring gear
124, brake casing 121 is fixed on transmission outer housing 101 eventually by washer and bolt, the right side of the fixing bearing 215
It is additionally provided with adjustment gasket 2151 and adjustment plate 2152, adjustment gasket 2151 is used to adjust the end-play of level-one bearing 214, adjusts
Whole plate 2152 and adjustment gasket 2151 are bolted on outer housing.
When being full of pressure oil on the right side of brake casing 121, piston 127 moves to right band dynamic pressure plate 125 and moves to right, and pressing plate 125 pushes away
Dynamic disc spring 126 is compressed, and friction plate 122 is separated with outer tooth plate 123, and friction plate 122 is fixed on described one by gear engagement at this time
On grade driving gear 211, friction plate 122 dallies at this time, and the brake 12 of control power transmitting unlocks, and does not play braking action；When
After the unloading of 121 right side hydraulic oil of brake casing, disc spring 126 pushes piston 127 to move to left under the action of own resilience, living
Plug 127 moves to left band dynamic pressure plate 125 and moves to left, and friction plate 122 has been combined braking action, the system of control power transmitting with outer tooth plate 123
Dynamic device 12 is latched, and due to outer tooth plate 123 and 124 internal messing of ring gear, and ring gear 124 and outer housing are solid by washer and bolt
Fixed connection, therefore, the power that motor 4 transmits cannot be transmitted to level-one driving gear 211, and power transmitting is cut off.
The left transmission 81 eventually when it is implemented, the reduction ratio set in order to obtain, is calculated accordingly according to structure,
If the number of teeth of level-one driving gear 211 is Z1, the number of teeth of level-one driven gear 22 is Z2, then first order gear power transmitting transmission
ThanNegative sign represents power, and to output and input rotary speed direction opposite.According to planet row principle, the first planet row
Column formula: ns1+αnr1-(1+α1)nc1=0, in formula: ns1For the first sun wheel speed；nr1For the first planetary ring gear revolving speed；nc1For
First planet carrier revolving speed；α1For the first planet row characterisitic parameter, the ratio between the first gear ring number of teeth and the first sun gear number of teeth are α1=
Zq1/Zt1.Due to the braking of the first planetary ring gear and nr1=0, then the power of the first planet row transmits transmission ratio:
Similarly, according to planet row principle, the second planetary-arranged formula: ns2+αnr2-(1+α2)nc2=0, in formula: ns2It is
Two sun wheel speeds；nr2For the second planetary ring gear revolving speed；nc2For the second planet carrier revolving speed；α2For the second planet row characterisitic parameter,
The ratio between the second gear ring number of teeth and the second sun gear number of teeth are α2=Zq2/Zt2；Due to the braking of the second planetary ring gear and nr2=0, then
The power of second planet row transmits transmission ratio:
By Such analysis, 6 spline engagement of gear hub 23 and the first sun gear, the two revolving speed is identical；First planet row 7 and
Two sun gears, 19 spline engagement, the two revolving speed are identical；Second planet carrier 12 is identical as 15 revolving speed of tooth block by spline output power；
The then total reduction ratio of left transmission 81 eventually are as follows:
It is described it is left eventually transmission 81 reduction ratio beNegative sign represents power input
It is opposite with output rotary speed direction.Wherein Z1For the number of teeth of level-one driving gear 211, Z2The number of teeth, Z for level-one driven gear 212t1
The number of teeth, Z for the first sun gear 221q1The number of teeth, Z for the first planetary ring gear 224t2The number of teeth, Z for the second sun gear 231q2For
The number of teeth of second planetary ring gear 234.Therefore by adjusting level-one driving gear 211, the level-one driven gear in above-mentioned formula
212, the correspondence number of teeth of the first sun gear 221, the first planetary ring gear 224, the second sun gear 231 and the second planetary ring gear 234 with
The reduction ratio for realizing setting meets the needs of high-power hydrostatic transmissions bulldozer final drive deceleration torque increase, right transmission 82 eventually
Reduction ratio calculation formula and method are similarly.
Embodiment 2
The present invention also provides a kind of bull-dozers, as shown in the walking manipulation schematic diagram of Fig. 5 bull-dozer, comprising: provide dynamic
Engine 5, shaft coupling 6 and the pump 7 for being connected with motor 4 of power output, the shaft coupling 6 are separately connected engine 5 and pump 7, institute
It states motor 4 and is connected with corresponding whole drive mechanism.The pump 7 and motor 4 constitute enclosed vibration hydraulic system.I.e. oil liquid is in pump 7
It is circulated between motor 4, the torque that engine 5 provides is converted into high-voltage oil liquid by pump 7, and high-voltage oil liquid is by energy transmission
To motor 4, oil stream is then again converted to torque come drive chain wheel hub 33 by motor 4, pushes crawler travel.
Preferably, the bull-dozer includes left whole transmission 81 and right transmission 82 eventually, and the pump 7 pumps 71 and front pump after including
72, the motor 4 includes left motor 41 and right motor 42, and pump 71 and front pump 72 after the shaft coupling 6 is separately connected pump after described
The 71 left motors 41 of connection, the left motor 41 connect left transmission 81 eventually, and the front pump 72 connects right motor 42, the right motor 42
Connect right transmission 82 eventually.
Bull-dozer walking states have advance, retrogressing, steering to the left, the to the right states such as steering, according to the discharge capacity of motor 4, vehicle
Speed has advance to accelerate, advance is slowed down, retrogressing accelerates and retreats the states such as deceleration.Fig. 4-5 is bull-dozer structure chart, the bull-dozer
It further include controller 9, the controller 9 is separately connected walking handle 91 and display 92, the controller 9 pump after being separately connected
71 and front pump 72.Handle 91 of walking issues instruction, the instruction such as advance, retrogressing, acceleration and deceleration, left steering, right turn；The display
92 simultaneous display current gears, speed etc.；The controller 9 receives instruction, carries out operation, input control instruction.
As shown in the structural schematic diagram of Fig. 4 bull-dozer, front pump 72 is connect by vibration hydraulic system with right motor 42, right horse
It is connect up to 42 with right transmission 82 eventually, right motor 42 is additionally provided with right brake locking judgment module 94 with right transmission 82 eventually, leads to
It crosses open locking and realizes power transmitting and cutting；Pump 71 is connect by vibration hydraulic system with left motor 41 afterwards, left motor 41 and a left side
81 connection of transmission eventually has left brake locking judgment module 93, is realized by open locking between left motor 41 and left transmission 81 eventually
Power transmitting and cutting.The brake 12 includes left brake and right brake, wherein the left brake connects left braking
Device lock modules 93, the right brake connect right brake lock modules 94, when the finger of pump 7 and the reception controller 9 of motor 4
It enables, by discharge capacity extremely walking 91 setting value of handle of solenoid valve control pump 7, motor 4, completes advance, retrogressing, acceleration and deceleration, left-hand rotation
To and right turn function realization.
Fig. 6 is the walking manipulation open locking operating process schematic diagram for the bull-dozer that the embodiment of the present invention 2 provides.When walking hand
When handle 91 is in neutral gear, left brake and right brake are latched；Otherwise, when handle 91 of walking, which is in, to advance, left brake
It is unlocked with right brake；When handle 91 of walking, which is in, to be retreated, left brake and right brake are unlocked；When walking handle 91
When in left steering, left brake locking, right brake unlock；When handle 91 of walking is in right turn, left brake unlock,
Right brake locking.
In conclusion brake unit 1, primary speed-down unit 21, double reduction unit 22,23 conduct of three-level deceleration unit
One big module is fixedly connected with bull-dozer mainframe, is dismounted easy to maintenance；Primary speed-down unit 21,22 and of double reduction unit
These three units of three-level deceleration unit 23 are integrally used as deceleration mechanism, and primary speed-down unit 21 is two-stage spur reduction structure, and two
Grade deceleration unit 22 and three-level deceleration unit 23 are planet row structure, can be realized bigger transmission ratio, play reduction speed
Increasing the effect of torque, transmitting torque is steady, can carry bigger torque, and it is economical and practical, securely and reliably, it is quiet to meet high-power
The demand of hydraulic drive reduction ratio.
The technical principle of the invention is described above in combination with a specific embodiment.These descriptions are intended merely to explain of the invention
Principle, and shall not be construed in any way as a limitation of the scope of protection of the invention.Based on the explanation herein, the technology of this field
Personnel can associate with other specific embodiments of the invention without creative labor, these modes are fallen within
Within protection scope of the present invention.
Claims (9)
1. a kind of end drive mechanism, which is characterized in that including brake unit (1) and transmission system (2), the transmission system
It (2) include primary speed-down unit (21), double reduction unit (22) and three-level deceleration unit (23), the primary speed-down unit
It (21) include two-stage spur reduction structure, the double reduction unit (22) includes the first planet row structure, and the three-level is slowed down
Unit (23) includes the second planet row structure, and the brake unit (1) is connected to the transmission end of motor (4)；
The primary speed-down unit (21) includes level-one driving gear (211), level-one driven gear (212) and gear hub (213),
The level-one driving gear (211) and level-one driven gear (212) external toothing, level-one driven gear are fixedly connected on (212)
The coaxial gear hub (213) with the level-one driven gear (212), the level-one driving gear (211) are solid by left and right two
Dead axle holds (215) support, and the gear hub (213) is by level-one bearing (214) support of left and right two, the gear hub (213)
It is meshed by its internal spline with the double reduction unit (22).
2. end drive mechanism according to claim 1, which is characterized in that the double reduction unit (22) includes first too
Sun wheel (221), the first planetary gear (222), first planet carrier (223) and the first planetary ring gear (224), first sun gear
(221) shaft is engaged with the internal spline of gear hub (213) by its external splines, the gear of first sun gear (221) and
Multiple first planetary gear (222) external toothings, first planetary gear (222) and the first planetary ring gear (224) internal messing, described the
One planetary gear (222) is arranged on first planet carrier (223), and described first planet carrier (223) one end passes through secondary bearing (226)
It is set in the shaft of the first sun gear (221), the other end is engaged by spline with three-level deceleration unit (23).
3. end drive mechanism according to claim 2, which is characterized in that the three-level deceleration unit (23) includes second too
Sun wheel (231), the second planet carrier (232), the second planetary gear (233) and the second planetary ring gear (234), second sun gear
(231) it is engaged by second level spline with first planet carrier (223), second sun gear (231) and multiple second planetary gears
(233) external toothing, second planetary gear (233) and the second planetary ring gear (234) internal messing, second planetary gear (233)
It is mounted on the second planet carrier (232), described second planet carrier (232) one end is set in the second planetary gear by three-level bearing
(233) in shaft, the other end is engaged by spline with driving unit (3).
4. end drive mechanism according to claim 3, which is characterized in that the driving unit (3) includes terminal pad (31),
The terminal pad (31) connects with teeth piece (34), institute on the sprocket hub (33) by driving spline engagement to have sprocket hub (33)
Sprocket hub (33) is stated through the bearing support for the side that sets within it in transmission outer housing (101) eventually, the terminal pad (31) is logical
Spline is crossed to engage with the second planet carrier (232).
5. end drive mechanism according to claim 4, which is characterized in that the tooth block (34) is located at three-level deceleration unit
(23) inner or outer side.
6. end drive mechanism according to claim 5, which is characterized in that the brake unit (1) includes passing through spline
Set (11) brake (12) for being connect with motor (4), the spline housing (11) it is inside and outside be respectively arranged with internal spline with
The shaft of external tooth, the motor (4) and level-one driving gear (211) is meshed with internal spline, the brake (12) and outer
Tooth is meshed.
7. end drive mechanism according to claim 6, which is characterized in that the brake (12) includes being provided with brake empty
The brake casing (121) of chamber, the braking cavity are set on spline housing (11), and the brake empty is intracavitary along spline housing (11)
Radial from-inner-to-outer be disposed with the friction plate (122) being meshed with the external tooth of spline housing (11), outer tooth plate (123) and with it is outer
The side of the ring gear (124) that tooth plate (123) is meshed, the friction plate (122), outer tooth plate (123) and ring gear (124) is supported
It is pressed in transmission outer housing (101) eventually, the other side has compressed pressing plate (125), has compressed disc spring on the outside of the pressing plate (125)
(126), the pressing plate (125) is connected on piston (127) by retaining ring (129), and the piston (127) is set in spline housing
(11) external and along spline housing (11) axial stretching, the top of the ring gear (124) and disc spring (126) is each attached to brake
On shell (121), the circular hole that bolt passes through can be accommodated by offering on the ring gear (124), the ring gear (124), system
Dynamic device shell (121) are fixed in transmission outer housing (101) eventually by washer and bolt.
8. end drive mechanism according to claim 3, which is characterized in that the reduction ratio being driven eventually isWherein Z1The number of teeth, Z for level-one driving gear (211)2For level-one driven gear
(212) the number of teeth, Zt1The number of teeth, Z for the first sun gear (221)q1The number of teeth, Z for the first planetary ring gear (224)t2Too for second
The number of teeth of sun wheel (231), Zq2For the number of teeth of the second planetary ring gear (234).
9. a kind of bull-dozer characterized by comprising provide the engine (5) of power output, shaft coupling (6) and be connected with horse
Up to the pump (7) of (4), the shaft coupling (6) is separately connected engine (5) and pump (7), and the motor (4) is connected at least one
Such as the described in any item whole drive mechanisms of claim 1-8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710123366.1A CN106641161B (en) | 2017-03-03 | 2017-03-03 | A kind of end drive mechanism and bull-dozer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710123366.1A CN106641161B (en) | 2017-03-03 | 2017-03-03 | A kind of end drive mechanism and bull-dozer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106641161A CN106641161A (en) | 2017-05-10 |
| CN106641161B true CN106641161B (en) | 2019-01-29 |
Family
ID=58848080
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710123366.1A Active CN106641161B (en) | 2017-03-03 | 2017-03-03 | A kind of end drive mechanism and bull-dozer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106641161B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108662091B (en) * | 2018-07-16 | 2021-06-04 | 山推工程机械股份有限公司 | Novel hub reduction structure and speed reducer |
| CN109139853A (en) * | 2018-08-30 | 2019-01-04 | 山推工程机械股份有限公司 | A kind of end drive mechanism, bull-dozer and Servo Control method |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201826342U (en) * | 2010-09-02 | 2011-05-11 | 大连新氏传动科技有限公司 | Excavator travel reducer |
| CN102225684A (en) * | 2011-05-03 | 2011-10-26 | 重庆大学 | Hybrid Vehicle Drivetrain |
| CN203129216U (en) * | 2012-11-27 | 2013-08-14 | 山推工程机械股份有限公司 | Planet gear type final driving device for bulldozer or trimming bulldozer |
| CN203413076U (en) * | 2013-05-25 | 2014-01-29 | 陈建民 | Dual-speed-ratio gear case of planetary gear |
| CN203906681U (en) * | 2014-04-29 | 2014-10-29 | 北京航天发射技术研究所 | Electric drive two-bumper two-stage hub speed reducer |
-
2017
- 2017-03-03 CN CN201710123366.1A patent/CN106641161B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN106641161A (en) | 2017-05-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US9534663B2 (en) | Transmission device | |
| US5620387A (en) | Drive unit for a motor vehicle | |
| US8758179B2 (en) | Electrically-variable transmission for a vehicle | |
| US20050252703A1 (en) | Hybrid powertrain | |
| US8342996B2 (en) | Multi-speed transmission with multi-axis transfer | |
| CN106945496B (en) | Mining driving force adaptive multiple-shift automatic transmission Dual-motors Driving bridge | |
| CN215171931U (en) | A double planetary transmission | |
| CN208919252U (en) | Multistage transmission structures | |
| CN202125574U (en) | Modularized wheel redactor integrated with brake | |
| CN108662091A (en) | A kind of Novel wheel-side slowing-down structure and speed reducer | |
| CN106641161B (en) | A kind of end drive mechanism and bull-dozer | |
| CN108240432A (en) | Double rank planetary gears | |
| US7353789B2 (en) | Angular camshaft position adjustment drive | |
| CN205890525U (en) | Bi -motor power device and electric automobile are arranged to single file star | |
| CN109139853A (en) | A kind of end drive mechanism, bull-dozer and Servo Control method | |
| US11807102B2 (en) | Gear unit and powertrain for a vehicle | |
| CN110654219B (en) | Wheel limit actuating system and vehicle that has it | |
| CN109017293A (en) | A kind of new-energy automobile actuating unit | |
| CN205945397U (en) | Electric wheel hub subassembly | |
| CN110654231B (en) | Wheel limit actuating system and vehicle that has it | |
| CN208664946U (en) | Wheel drive systems and vehicles | |
| CN107128172A (en) | The wheeled power dividing dynamic coupling device of Cylinder Gear | |
| CN109780148A (en) | Planetary Gear Transmission | |
| CN209581144U (en) | Axle for tractor with planetary reduction mechanism | |
| CN111923717B (en) | Variable speed ratio hybrid power driving system for mining truck |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |