CN106612679A - Power output device for agricultural machinery and control method of power output device - Google Patents
Power output device for agricultural machinery and control method of power output device Download PDFInfo
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- CN106612679A CN106612679A CN201710099289.0A CN201710099289A CN106612679A CN 106612679 A CN106612679 A CN 106612679A CN 201710099289 A CN201710099289 A CN 201710099289A CN 106612679 A CN106612679 A CN 106612679A
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- pressure
- film
- bearing
- central layer
- plate
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01B—SOIL WORKING IN AGRICULTURE OR FORESTRY; PARTS, DETAILS, OR ACCESSORIES OF AGRICULTURAL MACHINES OR IMPLEMENTS, IN GENERAL
- A01B71/00—Construction or arrangement of setting or adjusting mechanisms, of implement or tool drive or of power take-off; Means for protecting parts against dust, or the like; Adapting machine elements to or for agricultural purposes
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01B—SOIL WORKING IN AGRICULTURE OR FORESTRY; PARTS, DETAILS, OR ACCESSORIES OF AGRICULTURAL MACHINES OR IMPLEMENTS, IN GENERAL
- A01B51/00—Undercarriages specially adapted for mounting-on various kinds of agricultural tools or apparatus
- A01B51/02—Undercarriages specially adapted for mounting-on various kinds of agricultural tools or apparatus propelled by a motor
Abstract
The invention provides a power output device for agricultural machinery and a control method of the power output device. A belt pulley is connected to the end, far away from a shell, of an output shaft of the power output device, a gear ring, friction plates, a pressure bearing device and a compressing device are arranged in the shell, the pressure bearing device comprising a pressure bearing plate and a pressure plate is located between the gear ring and the output shaft, and the friction plate is arranged between the pressure bearing plate and the pressure plate; the compressing device comprises a plunger and a working cavity formed between the plunger and a shaft shoulder arranged on the output shaft, a control system outputs pressure and transmits pressure to the working cavity, compressing force is formed, the compressing force enables the plunger to axially move and is transmitted to the pressure plate and the pressure bearing plate, the friction plates are meshed with each other, power is transmitted to the output shaft, and then power outputting is completed. According to the power output device for the agricultural machinery and the control method of the power output device, the design is reasonable, the structure is compact, and installation is convenient; the compressing force is formed through fluid in the working cavity formed between the plunger and the shaft shoulder of the output shaft, the system is reliable, power combining and switching-off of a working device can be well achieved, and therefore the system failure rate is greatly decreased.
Description
Technical field
The invention belongs to agricultural mechanical field, and in particular to a kind of PTO and its controlling party for agricultural machinery
Method.
Background technology
With rural economy and the development of mechanization of agriculture, agricultural mechanical operation scope constantly expands, with power output dress
The agricultural machinery and implement for putting supporting operation are emerged in multitude, such as rotary cultivator, spraying machine, harvester, pneumatic seeder, kind of watermelon seed extractor and
Straw chopping and returning machine etc..The application of these equipments, not only alleviates the labour intensity of peasant, improves operation quality and synthesis
Benefit, and the utilization rate of agricultural machinery is also improved, increase machine hand income.But the equipment of agricultural machinery only has operationally
Power is just needed to be input into, then the power input of equipment needs PTO to be connected with engine, realizes equipment
The combination of power and cut-out.The PTO for adopting at present realized using frame for movement, compaction pressure it cannot be guaranteed that, system
Fault rate is high.
The content of the invention
The invention aims to a kind of PTO and its control for agricultural machinery of offer that solve the above problems
Method, by using dry type friction plate, pressure being formed using fluid by the working chamber formed between plunger and the output shaft shaft shoulder
Clamp force, is controlled by control system to power output, system stability, reliability, can preferably realize equipment power
Combination with cut-out, substantially reduce system failure rate.
The present invention can be achieved through the following technical solutions above-mentioned purpose：A kind of PTO for agricultural machinery, bag
Housing and output shaft are included, one end of described housing is set on output shaft by bearing, away from the one of housing on output shaft
End is connected with belt pulley, and gear ring, friction plate I, pressure-bearing device, hold down gag are additionally provided with housing, and described gear ring is interior
Gear ring is simultaneously connected by connector with engine power output, and described pressure-bearing device is located between gear ring and output shaft,
Hold down gag is arranged on the side of pressure-bearing device to be used to export thrust；
Described pressure-bearing device includes bearing plate and pressure plare, and described bearing plate is connected by spline with output shaft, remote at its
Support flat board is provided with from the side of hold down gag, described pressure plare passes through spline connection on bearing plate, on bearing plate also
Be provided with the pivot pin for being surrounded by back-moving spring, pivot pin is held out against in the plate face of pressure plare, friction plate I be arranged on bearing plate and pressure plare it
Between and be set on bearing plate, described friction plate I is made up of film I, the central layer I with the gear teeth, film II, and central layer I is located at
The centre of film I, film II, central layer I is meshed with the internal tooth of gear ring；Described hold down gag includes plunger, plunger and output
The working chamber formed between the shaft shoulder arranged on axle, in the state of control system output pressure is transferred in working chamber, plunger
Produce axial movement thrust to be passed in the plate face of pressure plare；Working chamber is connected by the hydraulic fluid port on output shaft with oil duct I,
Oil duct I is connected by hydraulic fluid port with the control system of outside, and one end of output shaft connection belt pulley is taper, is supported by bearing II
In housing, bearing II is provided with output bearing cap and output bearing cap, and in the position of belt pulley correspondence bearing II hole, hole are provided with
It is connected with bearing II by oil duct II.
Further, friction plate II and middle platen are additionally provided between bearing plate and pressure plare, described middle platen is located at
Between friction plate I and friction plate II, described friction plate II is located between pressure plare and middle platen；Described friction plate II is by glue
Piece III, central layer II, film IV are constituted, and central layer II is located at film III, the centre of film IV, and central layer II is engaged with gear ring.
Further, described output shaft is connected by flat key with belt pulley.
Further, described plunger is not in company with output shaft rotation.
A kind of control method of the PTO for agricultural machinery, comprises the following steps：
The housing of PTO is connected with motor body, and gear ring, friction plate I, pressure-bearing device, pressure are provided with housing
Tight device, output shaft, when power binding signal sends, control system detects engine speed and reaches working speed, work
When pressure reaches control pressure, by connector to gear ring, gear ring is ring gear, positioned at bearing plate and pressure for engine power output
Between power plate and the friction plate I that is set on bearing plate includes film I, the central layer I with the gear teeth, film II, gear ring is by power
The central layer I for engaging is sent to, central layer I is in impaction state with film I, film II, and central layer I transmits power by frictional force
To film I, the bearing plate of film II, pressure-bearing device and pressure plare, pressure plare passes through spline by power concentration to bearing plate, is located at
The pivot pin of back-moving spring that is surrounded by bearing plate is held out against in the plate face of pressure plare, and pressure plare is by spline connection in bearing plate
On axle sleeve, hold down gag includes the working chamber formed between the shaft shoulder arranged on plunger, plunger and output shaft, and working chamber is by defeated
Hydraulic fluid port on shaft is connected with oil duct I, and the outside exportable pressure fluid of control system will export pressure through hydraulic fluid port by oil duct I
Power input service chamber, forms thrust, and thrust promotes plunger axial movement, and then plunger promotes pressure plare, makes pressure plare pressure
Contracting back-moving spring, then pressing friction piece I, bearing plate, bearing plate transmits power to output shaft by spline, and output shaft transmission is dynamic
Power completes power output to belt pulley；
Send when power cut signal, operating pressure less than control pressure, engine speed less than any one in working speed
When the situation of kind occurs, working chamber is connected low-pressure fluid by control system by hydraulic fluid port, under the action of the spring, promotes pressure plare to return
Position, so as to plunger is promoted into return, the fluid in working chamber flows out, and now pressure plare, bearing plate and friction plate I divide in the axial direction
Open, central layer I is separated with film I and film II, gear ring dallies with central layer I, completes power cut.
Further, one end of output shaft connection belt pulley is taper, is supported in housing by bearing II, bearing II
Output bearing cap and output bearing cap are provided with, in the position of belt pulley correspondence bearing II hole is provided with, hole is by oil duct II and axle
Hold II to be connected.
Further, friction plate II and middle platen are additionally provided between bearing plate and pressure plare, described middle platen is located at
Between friction plate I and friction plate II, described friction plate II is located between pressure plare and middle platen；Described friction plate II is by glue
Piece III, central layer II, film IV are constituted, and central layer II is located at film III, the centre of film IV, and central layer II is engaged with gear ring.
Further, when power binding signal sends, control system detects engine speed and reaches working speed, work
When reaching control pressure as pressure, gear ring sends power to the central layer I and central layer II for engaging, central layer I and film I, glue
Piece II is in impaction state, and central layer II is in impaction state with film III, film IV, and central layer I, central layer II are transmitted by frictional force
The bearing plate and pressure plare of power to film I, film II, film III, film IV and its pressure-bearing device, pressure plare, middle platen lead to
Spline is crossed by power concentration to bearing plate；Send when power cut signal, operating pressure it is low less than control pressure, engine speed
When any one situation in working speed occurs, working chamber is connected low-pressure fluid by control system by hydraulic fluid port, in spring
In the presence of, pressure plare return is promoted, so as to plunger is promoted into return, the fluid in working chamber flows out, now pressure plare, pressure-bearing
Plate separates in the axial direction with friction plate I, friction plate II, central layer I is separated with film I and film II, while central layer II and film
IIIth, film IV separates, and gear ring dallies with central layer I, central layer II, completes power cut.
The invention has the advantages that：
1. the friction plate I of the present invention, friction plate II are dry type friction plate, and easy for installation, transmitting torque is big；
2. the present invention is transferred to output pressure between the shaft shoulder arranged on plunger and output shaft by oil duct I using control system
The working chamber of formation forms thrust and forms thrust promotion plunger axial movement by fluid, so as to promote pressure plare to move
Dynamic, pressure plare is by power concentration to bearing plate or pressure plare and middle platen by power concentration to bearing plate, bearing plate transmission power
To output shaft, output shaft transmits power to belt pulley, realizes that power is combined；Thrust is not affected during friction disc wear, it is ensured that dynamic
Power combines reliable, reduction fault rate；
3. reasonable in design, compact conformation of the invention, easy for installation, bearing lubrication is also convenient for, by belt pulley correspondence bearing II
Position be provided with hole, hole is connected by oil duct II with bearing II, and by hole butter can be added, and butter is by oil duct II to bearing
II is lubricated；The PTO works well during the use of various agricultural machinery and implement, is fully able to meet power defeated
Go out the use requirement of device agricultural machinery and implement.
Description of the drawings
Fig. 1 is the structural representation of the PTO that the embodiment of the present invention 1 is used for agricultural machinery；
Fig. 2 is structural representation of the present invention for the output shaft of power output device of agricultural machinery；
Mark in figure：1- housings, 2- gear rings, 3- bearing plates, 4- bearings I, 5- output shafts, 51- keyways, 52- splines, 53- cones
Face, 6- pivot pins, 7- back-moving springs, 8- friction plates I, platen in 9-, 10- pressure plares, 11- friction plates II, 12- plungers, 13- works
Make chamber, 14- oil ducts I, 15- belt pulleys, 16- hydraulic fluid ports, 17- holes, 18- output bearing caps, 19- oil ducts II, 20- bearings II, 21- is defeated
Go out bearing cap II.
Specific embodiment
A kind of PTO for agricultural machinery, including housing 1 and output shaft 5, one end of described housing 1 passes through axle
Bearing sleeve is located on output shaft 5, and the one end away from housing 1 on output shaft is connected with belt pulley 16, it is characterised in that positioned at housing
Gear ring 2, friction plate I, pressure-bearing device, hold down gag are inside additionally provided with, described gear ring 2 is ring gear and passes through connector and start
Mechanomotive force output end is connected, and described pressure-bearing device is located between gear ring 2 and output shaft 5, and hold down gag is arranged on pressure-bearing dress
The side put is used to export thrust；
Described pressure-bearing device includes bearing plate 3 and pressure plare 12, and described bearing plate 3 is connected by spline with output shaft 5,
It is provided with support flat board away from the side of hold down gag, and described pressure plare 12 passes through spline connection on bearing plate 3, in pressure-bearing
The pivot pin 6 for being surrounded by back-moving spring 7 is additionally provided with plate 3, pivot pin 6 is held out against in the plate face of pressure plare 11, and friction plate I 8 is arranged on and holds
Between pressing plate 3 and pressure plare 11 and it is set on bearing plate 3, described friction plate I 8 is by film I, the central layer I, glue with the gear teeth
Piece II is constituted, and central layer I is located at film I, the centre of film II, and central layer I is meshed with the internal tooth of gear ring 2；Described hold down gag
Including the working chamber 13 formed between the shaft shoulder arranged on plunger 12, plunger 12 and output shaft 5, pass in control system output pressure
In the state of being handed in working chamber 13, plunger 12 produces axial movement and thrust is passed in the plate face of pressure plare 11；Work
Chamber 13 is connected by the hydraulic fluid port on output shaft 5 with oil duct I 14, and oil duct I 14 is connected by hydraulic fluid port 16 with the control system of outside, defeated
One end of the connection belt pulley 15 of shaft 5 is taper, is supported in housing 1 by bearing II 20, and bearing II 20 is provided with output shaft
Hold lid 18 and output bearing cap 21, in the position of the correspondence bearing II 20 of belt pulley 16 hole 17 be provided with, hole 17 by oil duct II 19 with
Bearing II 20 is connected.
Further, friction plate II 10 and middle platen 9, described middle pressure are additionally provided between bearing plate 3 and pressure plare 11
Disk 9 is located between friction plate I 8 and friction plate II 10, and described friction plate II 10 is located between pressure plare 11 and middle platen 9；Institute
The friction plate II 10 stated is made up of film III, central layer II, film IV, and central layer II is located at film III, the centre of film IV, central layer II
Engage with gear ring 2.
Further, described output shaft 5 is connected by flat key with belt pulley 18.
Further, described plunger 12 is not rotated in company with output shaft 5.
A kind of control method of the PTO for agricultural machinery, comprises the following steps：
The housing 1 of PTO is connected with motor body 1, and gear ring 2, friction plate I, pressure-bearing dress are provided with housing 1
Put, hold down gag, output shaft 5, when power binding signal sends, control system detect engine speed reach work turn
When speed, operating pressure reach control pressure, engine power output is ring gear by connector to gear ring 2, gear ring 2, is located at
Between bearing plate 3 and pressure plare 11 and the friction plate I 8 that is set on bearing plate 3 includes film I, the central layer I, glue with the gear teeth
Piece II, gear ring 2 sends power to the central layer I for engaging, and central layer I is in impaction state with film I, film II, and central layer I leads to
Cross frictional force and transmit power to film I, the bearing plate 3 of film II, pressure-bearing device and pressure plare 11, pressure plare 11 will by spline
Power concentration to bearing plate 3, the pivot pin 6 for being surrounded by back-moving spring 7 on bearing plate 3 are held out against in the plate face of pressure plare 11,
By spline connection on the axle sleeve of bearing plate 3, hold down gag includes being set on plunger 12, plunger 12 and output shaft 5 pressure plare 11
The working chamber 13 formed between the shaft shoulder put, working chamber 13 is connected by the hydraulic fluid port on output shaft 5 with oil duct I 14, outside control
The exportable pressure fluid of system processed through hydraulic fluid port 16 by oil duct I 14 by output pressure input service chamber 13, form thrust, pressure
Clamp force promotes plunger 12 to move axially, and then plunger 12 promotes pressure plare 11, makes the compression reseting spring 7 of pressure plare 11, then presses
Friction-tight piece I 8, bearing plate 3, bearing plate 3 transmits power to output shaft 5 by spline, and output shaft 5 transmits power to belt pulley
15, complete power output；
Send when power cut signal, operating pressure less than control pressure, engine speed less than any one in working speed
When the situation of kind occurs, working chamber 13 is connected low-pressure fluid by control system by hydraulic fluid port 16, under the action of the spring, promotes pressure
The return of plate 11, so as to plunger 12 is promoted into return, the fluid in working chamber 13 flows out, now pressure plare 11, bearing plate 3 and friction
Piece I 8 separates in the axial direction, central layer I is separated with film I and film II, and gear ring 2 dallies with central layer I, completes power cut.
Further, one end of the connection of output shaft 5 belt pulley 15 is taper, is supported in housing 1 by bearing II 20, axle
Hold II 20 and be provided with output bearing cap 18 and output bearing cap 21, in the position of the correspondence bearing II 20 of belt pulley 16 hole 17 is provided with,
Hole 17 is connected by oil duct II 19 with bearing II 20.
Further, friction plate II 10 and middle platen 9, described middle pressure are additionally provided between bearing plate 3 and pressure plare 11
Disk 9 is located between friction plate I 8 and friction plate II 10, and described friction plate II 10 is located between pressure plare 11 and middle platen 9；Institute
The friction plate II 10 stated is made up of film III, central layer II, film IV, and central layer II is located at film III, the centre of film IV, central layer II
Engage with gear ring 2.
Further, when power binding signal sends, control system detects engine speed and reaches working speed, work
When reaching control pressure as pressure, gear ring 2 sends power to the central layer I and central layer II for engaging, central layer I and film I, glue
Piece II is in impaction state, and central layer II is in impaction state with film III, film IV, and central layer I, central layer II are transmitted by frictional force
The bearing plate 3 and pressure plare 11 of power to film I, film II, film III, film IV and its pressure-bearing device, pressure plare 11, middle pressure
Disk 9 is by spline by power concentration to bearing plate 3；Send when power cut signal, operating pressure is less than control pressure, engine
When rotating speed occurs less than any one situation in working speed, working chamber 13 is connected lowpressure stream by control system by hydraulic fluid port 16
Body, under the action of the spring, promotes the return of pressure plare 11, and so as to plunger 12 is promoted into return, the fluid in working chamber 13 flows out,
Now pressure plare 11, bearing plate 3 separate in the axial direction with friction plate I 8, friction plate II 10, make central layer I with film I and film II
Separate, while central layer II separates with film III, film IV, gear ring 2 dallies with central layer I, central layer II, completes power cut.
The described pivot pin for being surrounded by back-moving spring, pivot pin one end is exposed to outside bearing plate, and the other end is held out against in pressure plare
In plate face, and be installed in the plate face, whole pivot pin in bearing plate, friction plate I or bearing plate, friction plate I, middle platen and
Run through in friction plate II, spring is set on pivot pin, one end holds out against bearing plate, other end stretch pressure plate, shuttle in bearing plate,
In friction plate I；Described spring refers to back-moving spring；Described control system can for oil pump or controllable output pressure or
The system of fluid pump, is known to the professional person of the field；Described plunger be notch cuttype, one end compaction pressure plate, the other end
It is set on output shaft, and working chamber is formed between the output shaft shaft shoulder, described output shaft is provided with keyway 51 and spline 52,
Spline can be rectangular spline, be provided with the conical surface 53 away from one end of spline in output shaft and be one end of described output shaft to bore
Shape, described friction plate I, friction plate II are dry type friction plate.
With reference to specific embodiment, the present invention is further elaborated：
Embodiment 1
A kind of PTO for agricultural machinery, including housing 1 and output shaft 5, one end of described housing 1 passes through bearing holder (housing, cover)
It is located on output shaft 5, the one end away from housing 1 on output shaft is connected by flat key with belt pulley 16, is also set in housing
There are gear ring 2, friction plate I, pressure-bearing device, hold down gag, gear ring 2 is ring gear and passes through connector and engine power output
It is connected, pressure-bearing device is located between gear ring 2 and output shaft 5, hold down gag is arranged on the side of pressure-bearing device to be used to export pressure
Clamp force；Pressure-bearing device includes bearing plate 3 and pressure plare 12, and bearing plate 3 is connected by spline with output shaft 5, at it away from compression
The side of device is provided with support flat board, and pressure plare 12 on the axle sleeve of bearing plate 3, is also set by spline connection on bearing plate 3
There is the pivot pin 6 for being surrounded by back-moving spring 7, pivot pin 6 is held out against in the plate face of pressure plare 11, friction plate I 8 is arranged on bearing plate 3 and pressure
Between power plate 11 and it is set on bearing plate 3, friction plate I 8 is made up of film I, the central layer I with the gear teeth, film II, central layer I
Positioned at film I, the centre of film II, central layer I is meshed with the internal tooth of gear ring 2；It is additionally provided between bearing plate 3 and pressure plare 11
Friction plate II 10 and middle platen 9, middle platen 9 is located between friction plate I 8 and friction plate II 10, and friction plate II 10 is located at pressure plare
Between 11 and middle platen 9 and it is set on bearing plate 3；Friction plate II 10 is made up of film III, central layer II, film IV, central layer II
Positioned at film III, the centre of film IV, central layer II is engaged with gear ring 2；Hold down gag includes plunger 12, plunger 12 and output shaft 5
The working chamber 13 formed between the shaft shoulder of upper setting, plunger 12 is not rotated in company with output shaft 5, and working chamber 13 is by output shaft 5
Hydraulic fluid port be connected with oil duct I 14, oil duct I 14 by hydraulic fluid port 16 with outside control system be connected, output shaft 5 connect belt pulley 15
One end be taper, be supported in housing 1 by bearing II 20, bearing II 20 be provided with output bearing cap 18 and output bearing cap
21, hole 17 is provided with the position of the correspondence bearing II 20 of belt pulley 16, hole 17 is connected by oil duct II 19 with bearing II 20；Bearing I
Installed in output shaft near one end of bearing plate, play Auxiliary support effect；Oil duct II can install grease nipple, can be to Huang by hole
Oil nozzle adds butter, and butter is lubricated by oil duct II to bearing II.
When power binding signal sends, control system detects engine speed and reaches working speed, operating pressure and reaches
During to control pressure, by connector to gear ring 2, gear ring 2 sends power to the central layer I for engaging for engine power output
With central layer II, with film I, film II in impaction state, central layer II is in impaction state, core to central layer I with film III, film IV
Plate I, central layer II transmit power to film I, film II, film III, film IV and bearing plate 3 and pressure plare by frictional force
11, pressure plare 11, middle platen 9 are by spline by power concentration to bearing plate 3；The outside exportable pressure fluid Jing of control system
Hydraulic fluid port 16 is crossed by oil duct I 14 by output pressure input service chamber 13, thrust is formed, thrust promotes plunger 12 axially to move
Dynamic, then plunger 12 promotes pressure plare 11, makes the compression reseting spring 7 of pressure plare 11, then pressing friction piece II 10, friction plate I
8th, bearing plate 3, bearing plate 3 transmits power to output shaft 5 by spline, and output shaft 5 transmits power to belt pulley 15, completes power
Output；
Send when power cut signal, operating pressure less than control pressure, engine speed less than any one in working speed
When the situation of kind occurs, working chamber 13 is connected low-pressure fluid by control system by hydraulic fluid port 16, under the action of the spring, promotes pressure
The return of plate 11, so as to plunger 12 is promoted into return, the fluid in working chamber 13 flows out, now pressure plare 11, bearing plate 3 and friction
Piece I 8, friction plate II 10 separate in the axial direction, central layer I is separated with film I and film II, while central layer II and film III, glue
Piece IV separates, and gear ring 2 dallies with central layer I, central layer II, and gear ring 2 dallies with central layer I, completes power cut.
Embodiment 2
A kind of PTO for agricultural machinery, including housing 1 and output shaft 5, one end of described housing 1 passes through bearing holder (housing, cover)
It is located on output shaft 5, the one end away from housing 1 on output shaft is connected by flat key with belt pulley 16, is also set in housing
There are gear ring 2, friction plate I, pressure-bearing device, hold down gag, gear ring 2 is ring gear and passes through connector and engine power output
It is connected, pressure-bearing device is located between gear ring 2 and output shaft 5, hold down gag is arranged on the side of pressure-bearing device to be used to export pressure
Clamp force；Pressure-bearing device includes bearing plate 3 and pressure plare 12, and bearing plate 3 is connected by spline with output shaft 5, at it away from compression
The side of device is provided with support flat board, and pressure plare 12 on bearing plate 3, is additionally provided with bearing plate 3 and is surrounded by by spline connection
The pivot pin 6 of back-moving spring 7, pivot pin 6 is held out against in the plate face of pressure plare 11, and friction plate I 8 is arranged on bearing plate 3 and pressure plare 11
Between and be set on bearing plate 3, friction plate I 8 is made up of film I, the central layer I with the gear teeth, film II, central layer I be located at glue
The centre of piece I, film II, central layer I is meshed with the internal tooth of gear ring 2；Hold down gag includes plunger 12, plunger 12 and output shaft 5
The working chamber 13 formed between the shaft shoulder of upper setting, plunger 12 is not rotated in company with output shaft 5, and working chamber 13 is by output shaft 5
Hydraulic fluid port be connected with oil duct I 14, oil duct I 14 by hydraulic fluid port 16 with outside control system be connected, output shaft 5 connect belt pulley 15
One end be taper, be supported in housing 1 by bearing II 20, bearing II 20 be provided with output bearing cap 18 and output bearing cap
21, hole 17 is provided with the position of the correspondence bearing II 20 of belt pulley 16, hole 17 is connected by oil duct II 19 with bearing II 20；By hole
Addition butter, butter is lubricated by oil duct II to bearing II.
When power binding signal sends, control system detects engine speed and reaches working speed, operating pressure and reaches
During to control pressure, by connector to gear ring 2, gear ring 2 sends power to the central layer for engaging for engine power output
I, central layer I is in impaction state with film I, film II, and central layer I transmits power to film I, film II, pressure-bearing by frictional force
Plate 3 and pressure plare 11, pressure plare 11 is by spline by power concentration to bearing plate 3；The outside exportable pressure oil of control system
Through hydraulic fluid port 16 by oil duct I 14 by output pressure input service chamber 13, thrust is formed, thrust promotes plunger 12 axially to move
Dynamic, then plunger 12 promotes pressure plare 11, makes the compression reseting spring 7 of pressure plare 11, and then pressing friction piece I 8, bearing plate 3, hold
Pressing plate 3 transmits power to output shaft 5 by spline, and output shaft 5 transmits power to belt pulley 15, completes power output；
Send when power cut signal, operating pressure less than control pressure, engine speed less than any one in working speed
When the situation of kind occurs, working chamber 13 is connected low-pressure fluid by control system by hydraulic fluid port 16, under the action of the spring, promotes pressure
The return of plate 11, so as to plunger 12 is promoted into return, the fluid in working chamber 13 flows out, now pressure plare 11, bearing plate 3 and friction
Piece I 8 separates in the axial direction, central layer I is separated with film I and film II, and gear ring 2 dallies with central layer I, completes power cut.
Claims (8)
1. a kind of PTO for agricultural machinery, including housing（1）And output shaft（5）, described housing（1）One end lead to
Cross bearing and be set in output shaft（5）On, away from housing on output shaft（1）One end be connected with belt pulley（16）, its feature exists
In being additionally provided with gear ring in housing（2）, friction plate I, pressure-bearing device, hold down gag, described gear ring（2）For ring gear simultaneously
It is connected with engine power output by connector, described pressure-bearing device is located at gear ring（2）And output shaft（5）Between,
Hold down gag is arranged on the side of pressure-bearing device to be used to export thrust；
Described pressure-bearing device includes bearing plate（3）And pressure plare（12）, described bearing plate（3）By spline and output shaft
（5）Connection, support flat board, described pressure plare are provided with it away from the side of hold down gag（12）By spline connection in pressure-bearing
Plate（3）On, in bearing plate（3）On be additionally provided with and be surrounded by back-moving spring（7）Pivot pin（6）, pivot pin（6）Hold out against in pressure plare（11）'s
In plate face, friction plate I（8）It is arranged on bearing plate（3）And pressure plare（11）Between and be set in bearing plate（3）On, described rubs
Pad I（8）It is made up of film I, the central layer I with the gear teeth, film II, central layer I is located at film I, the centre of film II, central layer I
With gear ring（2）Internal tooth be meshed；Described hold down gag includes plunger（12）, plunger（12）With output shaft（5）Upper setting
The working chamber formed between the shaft shoulder（13）, in control system output pressure working chamber is transferred to（13）In the state of interior, plunger
（12）Produce axial movement and thrust is passed to into pressure plare（11）Plate face on；Working chamber（13）By output shaft（5）On
Hydraulic fluid port and oil duct I（14）It is connected, oil duct I（14）By hydraulic fluid port（16）It is connected with outside control system, output shaft（5）Connection skin
Belt wheel（15）One end be taper, by bearing II（20）It is supported on housing（1）It is interior, bearing II（20）It is provided with output bearing cap
（18）With output bearing cap（21）, in belt pulley（16）Correspondence bearing II（20）Position be provided with hole（17）, hole（17）By oil
Road II（19）With bearing II（20）It is connected.
2. a kind of PTO for agricultural machinery according to claim 1, it is characterised in that in bearing plate（3）With
Pressure plare（11）Between be additionally provided with friction plate II（10）With middle platen（9）, described middle platen（9）Positioned at friction plate I（8）With rub
Pad II（10）Between, described friction plate II（10）Positioned at pressure plare（11）With middle platen（9）Between；Described friction plate II
（10）It is made up of film III, central layer II, film IV, central layer II is located at film III, the centre of film IV, central layer II and gear ring（2）
Engagement.
3. a kind of PTO for agricultural machinery according to claim 1, it is characterised in that described output shaft
（5）By flat key and belt pulley（18）Connection.
4. a kind of PTO for agricultural machinery according to claim 1, it is characterised in that described plunger（12）
Not in company with output shaft（5）Rotate.
5. the control method of a kind of PTO for agricultural machinery according to claim 1, it is characterised in that include
Following steps：
The housing of PTO（1）With motor body（1）It is connected, housing（1）Inside it is provided with gear ring（2）, friction plate
Ith, pressure-bearing device, hold down gag, output shaft（5）, when power binding signal sends, control system detects engine speed and reaches
When reaching control pressure to working speed, operating pressure, engine power output is by connector to gear ring（2）, gear ring（2）For
Ring gear, positioned at bearing plate（3）And pressure plare（11）Between and be set in bearing plate（3）On friction plate I（8）Including film I,
Central layer I with the gear teeth, film II, gear ring（2）Send power to the central layer I for engaging, central layer I and film I, film II
In impaction state, central layer I transmits power to the bearing plate of film I, film II, pressure-bearing device by frictional force（3）And pressure
Plate（11）, pressure plare（11）By spline by power concentration to bearing plate（3）, positioned at bearing plate（3）On be surrounded by back-moving spring
（7）Pivot pin（6）Hold out against in pressure plare（11）Plate face on, pressure plare（11）By spline connection in bearing plate（3）Axle sleeve
On, hold down gag includes plunger（12）, plunger（12）With output shaft（5）The working chamber formed between the shaft shoulder of upper setting（13）,
Working chamber（13）By output shaft（5）On hydraulic fluid port and oil duct I（14）It is connected, the outside exportable pressure fluid Jing of control system
Cross hydraulic fluid port（16）By oil duct I（14）By output pressure input service chamber（13）, thrust is formed, thrust promotes plunger（12）
Move axially, then plunger（12）Promote pressure plare（11）, make pressure plare（11）Compression reseting spring（7）, then pressing friction
Piece I（8）, bearing plate（3）, bearing plate（3）Output shaft is transmitted power to by spline（5）, output shaft（5）Transmit power to belt
Wheel（15）, complete power output；
Send when power cut signal, operating pressure less than control pressure, engine speed less than any one in working speed
When kind of situation occurs, control system is by working chamber（13）By hydraulic fluid port（16）Low-pressure fluid is connected, under the action of the spring, is promoted
Pressure plare（11）Return, so as to by plunger（12）Promote return, working chamber（13）In fluid flow out, now pressure plare（11）、
Bearing plate（3）With friction plate I（8）Separate in the axial direction, central layer I is separated with film I and film II, gear ring（2）It is empty with central layer I
Turn, complete power cut.
6. the control method of a kind of PTO for agricultural machinery according to claim 5, it is characterised in that defeated
Shaft（5）Connection belt pulley（15）One end be taper, by bearing II（20）It is supported on housing（1）It is interior, bearing II（20）On
It is provided with output bearing cap（18）With output bearing cap（21）, in belt pulley（16）Correspondence bearing II（20）Position be provided with hole
（17）, hole（17）By oil duct II（19）With bearing II（20）It is connected.
7. the control method of a kind of PTO for agricultural machinery according to claim 5, it is characterised in that holding
Pressing plate（3）And pressure plare（11）Between be additionally provided with friction plate II（10）With middle platen（9）, described middle platen（9）Positioned at friction
Piece I（8）With friction plate II（10）Between, described friction plate II（10）Positioned at pressure plare（11）With middle platen（9）Between；It is described
Friction plate II（10）It is made up of film III, central layer II, film IV, central layer II is located at film III, the centre of film IV, central layer II
With gear ring（2）Engagement.
8. the control method of a kind of PTO for agricultural machinery according to claim 7, it is characterised in that when dynamic
When power binding signal sends, when control system detects engine speed and reaches working speed, operating pressure and reach control pressure,
Gear ring（2）The central layer I and central layer II for engaging is sent power to, central layer I is in impaction state, core with film I, film II
Plate II and film III, film IV are in impaction state, central layer I, central layer II by frictional force transmit power to film I, film II,
The bearing plate of film III, film IV and its pressure-bearing device（3）And pressure plare（11）, pressure plare（11）, middle platen（9）By spline
By power concentration to bearing plate（3）；Send when power cut signal, operating pressure is less than less than control pressure, engine speed
When any one situation in working speed occurs, control system is by working chamber（13）By hydraulic fluid port（16）Connect low-pressure fluid,
Under the action of the spring, pressure plare is promoted（11）Return, so as to by plunger（12）Promote return, working chamber（13）In fluid stream
Go out, now pressure plare（11）, bearing plate（3）With friction plate I（8）, friction plate II（10）Separate in the axial direction, make central layer I and glue
Piece I and film II separate, while central layer II separates with film III, film IV, gear ring（2）Dally with central layer I, central layer II, complete
Power cut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710099289.0A CN106612679A (en) | 2017-02-23 | 2017-02-23 | Power output device for agricultural machinery and control method of power output device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710099289.0A CN106612679A (en) | 2017-02-23 | 2017-02-23 | Power output device for agricultural machinery and control method of power output device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106612679A true CN106612679A (en) | 2017-05-10 |
Family
ID=58845611
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710099289.0A Pending CN106612679A (en) | 2017-02-23 | 2017-02-23 | Power output device for agricultural machinery and control method of power output device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106612679A (en) |
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| RU2019441C1 (en) * | 1991-06-28 | 1994-09-15 | Борис Сергеевич Горохов | Vehicle gearbox |
| CN102003473A (en) * | 2010-12-02 | 2011-04-06 | 中国一拖集团有限公司 | Constant-pressure type wet type multi-chip transfer case clutch for tractors |
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| CN204458903U (en) * | 2015-01-16 | 2015-07-08 | 杭州发达齿轮箱集团有限公司 | A kind of wet-type hydraulic clutch transmitting change moment of torsion |
| CN205478998U (en) * | 2016-01-15 | 2016-08-17 | 福建奉田信新能源科技有限公司 | Be applied to hydraulic pressure automatic clutch of new forms of energy vehicle |
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Application publication date: 20170510 |