CN107131266A - A kind of automatically tensioning type PTO - Google Patents
A kind of automatically tensioning type PTO Download PDFInfo
- Publication number
- CN107131266A CN107131266A CN201710519975.9A CN201710519975A CN107131266A CN 107131266 A CN107131266 A CN 107131266A CN 201710519975 A CN201710519975 A CN 201710519975A CN 107131266 A CN107131266 A CN 107131266A
- Authority
- CN
- China
- Prior art keywords
- tensioning
- cylinder
- piston rod
- tensioner arm
- hydro
- 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.)
- Pending
Links
- 238000000926 separation method Methods 0.000 claims abstract description 4
- 239000010720 hydraulic oil Substances 0.000 claims description 11
- 230000005611 electricity Effects 0.000 claims description 10
- 230000005540 biological transmission Effects 0.000 claims description 3
- 239000012530 fluid Substances 0.000 abstract description 7
- 230000015572 biosynthetic process Effects 0.000 abstract description 3
- 239000003921 oil Substances 0.000 description 11
- 239000002828 fuel tank Substances 0.000 description 4
- 239000000446 fuel Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 230000002706 hydrostatic effect Effects 0.000 description 1
- 238000012423 maintenance 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
- F16H7/00—Gearings for conveying rotary motion by endless flexible members
- F16H7/08—Means for varying tension of belts, ropes, or chains
- F16H7/10—Means for varying tension of belts, ropes, or chains by adjusting the axis of a pulley
- F16H7/12—Means for varying tension of belts, ropes, or chains by adjusting the axis of a pulley of an idle pulley
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
- F15B11/08—Servomotor systems without provision for follow-up action; Circuits therefor with only one servomotor
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
Abstract
The invention discloses a kind of automatically tensioning type PTO, including transfer case and tensioning apparatus；Tensioning apparatus includes tensioning hydro-cylinder, tensioner arm and rotates for entering belt tension action edge combination and loosening belt to realize the tensioning wheel of power separation in company with tensioner arm, the cylinder body end of tensioning hydro-cylinder is hinged on the housing of transfer case, and tailpiece of the piston rod is hinged with tensioner arm；When the piston rod of tensioning hydro-cylinder stretches out, piston rod promotes tensioner arm to rotate, to drive tensioning wheel to be tensioned feed belt；When tensioning hydro-cylinder piston rod bounces back, piston rod pulls tensioner arm backhaul, and tensioning wheel is rotated up, to loosen feed belt.The present invention uses tensioning hydro-cylinder, using fluid formation tensioning pressure, power output is controlled using hydraulic system, power is combined reliably, tensioning length is compensated automatically, and tensioning pressure is constant.
Description
Technical field
The present invention relates to agricultural mechanical field, a kind of automatically tensioning type PTO is concretely related to.
Background technology
The equipment of agricultural machinery only just needs power to input in operation, then the power input of equipment needs
Power assembly is connected with engine, realizes the combination and cut-out of equipment power.The power assembly used at present is using machinery
Structure realize, tensioning pressure it cannot be guaranteed that.
The content of the invention
It is an object of the present invention to provide a kind of automatically tensioning type power output to solve problems of the prior art
Device, using tensioning hydro-cylinder, using fluid formation tensioning pressure, is controlled, power knot using hydraulic system to power output
Close reliable, tensioning length is compensated automatically, and tensioning pressure is constant.
To achieve the above object, the technical solution adopted in the present invention is：A kind of automatically tensioning type PTO, bag
Include transfer case and tensioning apparatus；
The tensioning apparatus includes tensioning hydro-cylinder, tensioner arm and rotated in company with tensioner arm to combine for entering belt tension action edge
And loosen belt to realize the tensioning wheel of power separation, the cylinder body end of tensioning hydro-cylinder is hinged on the housing of transfer case, piston
Rod end is hinged with tensioner arm；
When the piston rod of tensioning hydro-cylinder stretches out, piston rod promotes tensioner arm to rotate, to drive tensioning wheel to be tensioned feed belt；
When tensioning hydro-cylinder piston rod bounces back, piston rod pulls tensioner arm backhaul, and tensioning wheel is rotated up, to loosen feed belt.
As a further improvement, also including hydraulic system, the hydraulic system includes closed type hydraulic pump, slippage pump, section
Valve, pressure-reducing valve, check valve, the first solenoid directional control valve and the second solenoid directional control valve are flowed, the second solenoid directional control valve, which is used to connect, to be tensioned
Pressure switch and pressure are installed on the rod chamber and rodless cavity of oil cylinder, the hydraulic branch between check valve and the first solenoid directional control valve
Power table；
When the first solenoid directional control valve obtains electric, the rodless cavity that the hydraulic oil exported through slippage pump enters tensioning hydro-cylinder promotes tensioning oil
The piston rod of cylinder stretches out, and drives tensioner arm to rotate, so that tensioning wheel is tensioned feed belt；
In the first solenoid directional control valve dead electricity, the rod chamber that the hydraulic oil exported through slippage pump enters tensioning hydro-cylinder promotes tensioning oil
Cylinder piston rod bounces back, and pulls tensioner arm backhaul, tensioning wheel is rotated up, to loosen feed belt.
As a further improvement, first solenoid directional control valve is two four-way electromagnetic reversing valves.
As a further improvement, the second solenoid directional control valve 2/2-way solenoid directional control valve.
As a further improvement, running through in the transfer case has the input shaft and output shaft be arrangeding in parallel, input shaft
Transfer case housing is stretched out at two ends, and input shaft one end is connected by power connector component with engine output shaft, other end connection
There is driving pulley, driving pulley is connected with the driven pulley for using mechanism to be connected with power by feed belt.
As a further improvement, being provided with jackshaft between input shaft and output shaft, jackshaft is provided with idle pulley, idle pulley
It is meshed simultaneously with the driven gear on the driving gear and output shaft on input shaft.
As a further improvement, the power connector component includes drive plate wheel hub and is connected on drive plate wheel hub
Terminal pad, drive plate wheel hub is connected with the spline fitted on input shaft, and terminal pad is provided with centre bore, and terminal pad passes through the center
The flange that hole is set with drive plate hub periphery surface is fixedly connected.
Compared with prior art, beneficial effects of the present invention are：
1. the present invention uses tensioning hydro-cylinder, using fluid formation tensioning pressure, power output is controlled using hydraulic system,
Power is combined reliably, and tensioning length is compensated automatically, and tensioning pressure is constant；
2. the main clutch of the present invention can artificially be cut off in the case where not starting engine, blocking occurs in reply equipment
During failure, it is easy to maintenance；
3. the flexible slow, retraction of the piston rod of the tensioning hydro-cylinder of the present invention is very fast, speed is controllable, meets belt tension clutch operating mode.
Brief description of the drawings
Fig. 1 is the structural representation of the embodiment of the present invention.
Fig. 2 for Fig. 1 A-A to sectional view.
Fig. 3 is hydraulic system principle figure of the invention.
Marked in figure：1st, transfer case, 101, housing, 102, bearing block, 103, input shaft, 104, driving gear, 105, lazy
Wheel, 106, jackshaft, 107, bearing II, 108, driven gear, 109, end cap, 110, bearing III, 111, output shaft, 112, pump
Seat, 113, bearing I, 2, tensioning apparatus, 201, cylinder support, 202, tensioning hydro-cylinder, 203, tensioner arm, 204, tensioning wheel, 3, pass
Send belt, 4, driven pulley, 5, driving pulley, 6, closed type hydraulic pump, 7, electromagnetic proportional valve, 8, slippage pump, 9, hydraulic oil output
Mouthful, 10, choke valve, 11, pressure-reducing valve, 12, check valve, 13, pressure switch, 14, pressure gauge, the 15, first solenoid directional control valve, 16,
Second solenoid directional control valve, 17, terminal pad, 18, drive plate wheel hub.
Embodiment
Below in conjunction with the accompanying drawings and specific embodiment the present invention is described in further detail.
As illustrated, a kind of automatically tensioning type PTO, including transfer case 1, tensioning apparatus 2 and hydraulic system,
The transfer case 1, which includes running through in housing 101, housing 101, the input shaft 103 and output shaft 111 be arrangeding in parallel, input shaft
Housing 101 is stretched out at 103 two ends, and the one end of input shaft 103 is connected by power connector component with engine output shaft, the other end
Driving pulley 5 is connected with, driving pulley 5 is connected with the driven pulley for using mechanism to be connected with power by feed belt 3
4, jackshaft 106 is provided between input shaft 103 and output shaft 111, jackshaft 106 is provided with idle pulley 107, and idle pulley 107 is simultaneously
It is meshed with the driven gear 108 on the driving gear 104 and output shaft 111 on input shaft 103.
It is arranged with input shaft 103 on two bearings I 113, jackshaft 106 and is arranged with bearing II 107, on output shaft 111
It is arranged with bearing III 110.
Input shaft 103 exports two-way power：Input shaft 103 transmits power to driving pulley 5, driving pulley by flat key connection
5 inner side belts make main clutch export power by tensioning apparatus, power output I are realized, while belt can be defeated on the outside of driving pulley
Go out stand-by power.
Input shaft 103 transmits power to driving gear 104 by spline connection, by driving gear 104, idle pulley 107, driven
The engagement of gear 108 transmits power to hydraulic system, realizes power output II.Wherein power output I is in normal dissengaged positions；Actively
Gear, idle pulley, driven gear are in normal engagement, i.e. power output II and are in normal bonding state.
Housing 101 is connected by two bearings I 113 with input shaft 103, and driving pulley 5 is connected with the flat key of input shaft 103,
The outside of housing 101, which is provided with end cap 109, housing 101, is additionally provided with pump seat 112, and bearing III 110 is arranged in pump seat 112.
Tensioning apparatus includes tensioning hydro-cylinder 202, tensioner arm 203 and rotated in company with tensioner arm 203 around bearing pin for skin
Band is tensioned combines and loosens belt to realize the tensioning wheel 204 of power separation into action edge, and the cylinder body end of tensioning hydro-cylinder 202 is led to
Cross cylinder support 201 and be hinged and be arranged on housing 101, tailpiece of the piston rod is hinged with tensioner arm 203, tensioner arm 203 and tensioning wheel 204
It is hinged.
Oil pressure is provided by hydraulic system, promotes tensioning hydro-cylinder to stretch out, tensioning hydro-cylinder promotes tensioner arm to rotate, and makes tensioning wheel
Driving belt is tensioned, makes main clutch output power, drives equipment, power output I is realized in such as threshing, cleaning plant, its
Middle main clutch-band has artificial cutting function.
Hydraulic system includes closed type hydraulic pump 6, slippage pump 8, choke valve 10, pressure-reducing valve 11, check valve 12, the first electromagnetism and changed
To the solenoid directional control valve 16 of valve 15 and second, the first solenoid directional control valve 15 is two four-way electromagnetic reversing valves, the second solenoid directional control valve
16 be 2/2-way solenoid directional control valve.
The input of closed type hydraulic pump 6 is connected with the output shaft 111, the oil inlet end connection oil of closed type hydraulic pump 6
Case, its fuel feeding end connects slippage pump 8 by hydraulic branch I, and slippage pump 8 is connected by hydraulic branch II with tensioning hydro-cylinder, and first
Solenoid directional control valve 15 is arranged on hydraulic branch II.Hydraulic branch II is provided with choke valve 10, pressure-reducing valve 11 and check valve 12, single
Pressure switch 13 and pressure gauge 14 are installed between the solenoid directional control valve 15 of valve 12 and first.Hydraulic oil source and the oil pipe of choke valve 10
Hydraulic oil source in connection, the present embodiment is slippage pump 8, and hydraulic fluid port and the hydraulic fluid port flexible pipe of tensioning hydro-cylinder 202 of solenoid directional control valve 15 connect
Connect.
Choke valve 10, pressure-reducing valve 11, check valve 12, pressure switch 13, the first solenoid directional control valve 15 and the second electromagnetic switch
Valve 16 is integral valve block, can make Sandwich plate valve or inserted valve.
Choke valve 10 adjusts power combination speed, the stable tensioning pressure of pressure-reducing valve 11；The rod chamber and nothing of tensioning hydro-cylinder 202
The second solenoid directional control valve 16 is connected between rod cavity, the second solenoid directional control valve 16 is used to connect the rod chamber of tensioning hydro-cylinder and without bar
Chamber.When second solenoid directional control valve 16 obtains electric, the rod chamber of tensioning hydro-cylinder 202 is connected with rodless cavity by solenoid directional control valve 15.
Also include electromagnetic proportional valve 7, the fuel feeding end of the closed type hydraulic pump 6 is connected with one end of electromagnetic proportional valve 7, electromagnetism
The other end of proportioning valve 7 is connected with slippage pump 8.Electromagnetic proportional valve 7 is used for the flow direction for controlling hydraulic oil.Slippage pump 8 connects with fuel tank
It is logical.
Bearing is installed, bearing is set in bearing block on input shaft 103.The external shell and transfer of closed type hydraulic pump 6
The housing 101 of case is fixedly connected.
When the first solenoid directional control valve 15 obtains electric, the piston rod of tensioning hydro-cylinder 202 stretches out, and promotes tensioner arm to rotate, so that
Tensioning wheel is tensioned driving belt, makes main clutch output power, driving workpiece work；In the dead electricity of the first solenoid directional control valve 15
When, the piston rod of tensioning hydro-cylinder 202 retraction pulls the backhaul of tensioner arm 203, tensioning wheel 204 is rotated up, loosens driving belt, cut
Disconnected main engaging power output.
When power output button is pressed, the first solenoid directional control valve 15 obtains electric, and the pressure oil output of slippage pump 8 passes through choke valve
10th, pressure-reducing valve 11, check valve 12, the first solenoid directional control valve 15, into tensioning hydro-cylinder rodless cavity, while tensioning hydro-cylinder rod chamber is logical
The right position connection fuel tank of the first solenoid directional control valve is crossed, now oil pressure promotes tensioning hydro-cylinder to stretch out, and realizes power output I.
During the first 15 dead electricity of solenoid directional control valve, slippage pump 8 exports fluid and enters tensioning by the left position of the first solenoid directional control valve
Cylinder rod chamber, while connect tensioning hydro-cylinder rodless cavity connects fuel tank by the left position of the first solenoid directional control valve, now oil pressure is promoted
Tensioning hydro-cylinder bounces back, and realizes the cut-out of power output I.
Power output button is pressed, the first solenoid directional control valve 15 it is electric, while pressure switch 13 detect pressure be less than
Make the dead electricity of solenoid directional control valve 15 during compaction forces, cut off power output；Under normality, the first solenoid directional control valve dead electricity.
Closed type hydraulic pump can export fluid by hydraulic oil output port 9 needs the hydraulic motor of hydraulic-driven to other.
Hydraulic system exports button with main clutch, and main clutch output button control solenoid directional control valve obtains dead electricity.
When the dead electricity of the first solenoid directional control valve 15, while when the second solenoid directional control valve 16 obtains electric, the rod chamber of tensioning hydro-cylinder 23
Connected with rodless cavity, while connecting fuel tank by the first solenoid directional control valve 15, now cut off main engaging power output.Such a situation
Suitable for when equipment breaks down, artificially cutting off main clutch, equipment is implemented to repair.
Input shaft 103 exports power to driving gear 104 by spline, and driving gear 104 is by meshed transmission gear power
To idle pulley 107, driven gear 108, driven gear 108 transmits power to output shaft by spline, and output shaft 14 can drive hydrostatic
Pressure system, running gear etc. complete power output II.
Power connector component includes drive plate wheel hub 18 and the terminal pad 17 being connected on drive plate wheel hub 18, is driven plate wheel
Hub 18 is connected with the spline fitted on input shaft 103, and terminal pad 17 is provided with centre bore, and terminal pad 17 is by the centre bore with passing
The flange that the outer surface of Moving plate wheel hub 18 is set is fixedly connected.
Engine power output exports power to input shaft 103, input shaft output two-way by terminal pad, drive plate wheel hub
Power：Input shaft 103 transmits power to driving pulley 5, when power output button is pressed, and solenoid directional control valve 15 obtains electric, slippage pump 8
Pressure oil output promotes tensioning hydro-cylinder to stretch out to tensioning hydro-cylinder, and tensioning hydro-cylinder promotes tensioner arm to rotate, and tensioner arm drives tensioning wheel
Rotate down, compress the driving belt on the inside of driving pulley, make main clutch output power, realize power output I, drive work clothes
Put, meanwhile, the exportable stand-by power of belt on the outside of driving pulley.
When power output button presses no electric signal output, the electromagnet dead electricity of the first solenoid directional control valve 15, or work pressure
When power is less than tensioning pressure, pressure switch makes the electromagnet dead electricity of the first solenoid directional control valve 15, cuts off power output I；Input shaft
103 pass through driving gear, idle pulley, driven gear engagement transmission power output shaft 14, the driving closed type hydraulic pump 6 of output shaft 14, institute
The oily drive hydraulic system principle of the output hydraulic pressure of closed type hydraulic pump 6 is stated, power output II is completed.
The present embodiment is only the power-driven system for giving one of which hydraulic oil, using other power-driven systems come
Hydraulic oil is driven, still within protection scope of the present invention.
Claims (7)
1. a kind of automatically tensioning type PTO, including transfer case（1）And tensioning apparatus（2）, it is characterised in that：
The tensioning apparatus（2）Including tensioning hydro-cylinder（202）, tensioner arm（203）With companion tensioner arm（203）Rotate for skin
Band is tensioned to be combined and loosens belt to realize the tensioning wheel of power separation into action edge（204）, tensioning hydro-cylinder（202）Cylinder body
End is hinged on transfer case（1）Housing（101）On, tailpiece of the piston rod and tensioner arm（203）It is hinged；
In tensioning hydro-cylinder（202）Piston rod stretch out when, piston rod promote tensioner arm（203）Rotate, to drive tensioning wheel（204）
It is tensioned feed belt（3）；In tensioning hydro-cylinder（202）When piston rod bounces back, piston rod pulls tensioner arm（203）Backhaul, tensioning wheel
（204）It is rotated up, to loosen feed belt（3）.
2. a kind of automatically tensioning type PTO according to claim 1, it is characterised in that：Also include hydraulic pressure system
System, the hydraulic system includes closed type hydraulic pump（6）, slippage pump（8）, choke valve（10）, pressure-reducing valve（11）, check valve（12）、
First solenoid directional control valve（15）With the second solenoid directional control valve（16）, the second solenoid directional control valve（16）For connecting tensioning hydro-cylinder
（202）Rod chamber and rodless cavity, check valve（12）With the first solenoid directional control valve（15）Between hydraulic branch on pressure is installed
Power is switched（13）With pressure gauge（14）；
In the first solenoid directional control valve（15）When obtaining electric, through slippage pump（8）The hydraulic oil of output enters tensioning hydro-cylinder（202）Without bar
Chamber promotes tensioning hydro-cylinder（202）Piston rod stretch out, drive tensioner arm（203）Rotate, so that tensioning wheel（204）Tensioning transmission
Belt（3）；
In the first solenoid directional control valve（15）During dead electricity, through slippage pump（8）The hydraulic oil of output enters tensioning hydro-cylinder（202）Have bar
Chamber promotes tensioning hydro-cylinder（202）Piston rod bounces back, and pulls tensioner arm（203）Backhaul, tensioning wheel（204）It is rotated up, to loosen
Feed belt（3）.
3. a kind of automatically tensioning type PTO according to claim 2, it is characterised in that：First electromagnetism is changed
To valve（15）For two four-way electromagnetic reversing valves.
4. a kind of automatically tensioning type PTO according to claim 2, it is characterised in that：Second electromagnetism is changed
To valve（16）2/2-way solenoid directional control valve.
5. a kind of automatically tensioning type PTO according to claim 1 or 2, it is characterised in that：The transfer case
（1）It is interior through there is the input shaft that be arranged in parallel（103）And output shaft（111）, input shaft（103）Two ends stretch out transfer case shell
Body, input shaft（103）One end is connected by power connector component with engine output shaft, and the other end is connected with driving pulley（5）,
Driving pulley（5）Pass through feed belt（3）It is connected with the driven pulley for using mechanism to be connected with power（4）.
6. a kind of automatically tensioning type PTO according to any one of claim 5, it is characterised in that：In input shaft
（103）And output shaft（111）Between be provided with jackshaft（106）, jackshaft（106）It is provided with idle pulley（107）, idle pulley（107）Together
When and input shaft（103）On driving gear（104）And output shaft（111）On driven gear（108）It is meshed.
7. a kind of automatically tensioning type PTO according to claim 6, it is characterised in that：The power connector group
Part includes drive plate wheel hub（18）Be connected to drive plate wheel hub（18）On terminal pad（17）, drive plate wheel hub（18）With input
Axle（103）On spline fitted connection, terminal pad（17）It is provided with centre bore, terminal pad（17）Pass through the centre bore and drive plate
Wheel hub（18）The flange that outer surface is set is fixedly connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710519975.9A CN107131266A (en) | 2017-06-30 | 2017-06-30 | A kind of automatically tensioning type PTO |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710519975.9A CN107131266A (en) | 2017-06-30 | 2017-06-30 | A kind of automatically tensioning type PTO |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107131266A true CN107131266A (en) | 2017-09-05 |
Family
ID=59736547
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710519975.9A Pending CN107131266A (en) | 2017-06-30 | 2017-06-30 | A kind of automatically tensioning type PTO |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107131266A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108386503A (en) * | 2018-03-29 | 2018-08-10 | 潍柴动力股份有限公司 | Belt stretcher for air conditioner compressor of vehicle |
| CN109131851A (en) * | 2018-09-21 | 2019-01-04 | 湖南湘晨飞机工业有限公司 | A kind of gyroplane is prewhirled clutch |
| CN109695678A (en) * | 2017-10-23 | 2019-04-30 | 河南森源重工有限公司 | A kind of belt stretcher and vehicle |
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Cited By (3)
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|---|---|---|---|---|
| CN109695678A (en) * | 2017-10-23 | 2019-04-30 | 河南森源重工有限公司 | A kind of belt stretcher and vehicle |
| CN108386503A (en) * | 2018-03-29 | 2018-08-10 | 潍柴动力股份有限公司 | Belt stretcher for air conditioner compressor of vehicle |
| CN109131851A (en) * | 2018-09-21 | 2019-01-04 | 湖南湘晨飞机工业有限公司 | A kind of gyroplane is prewhirled clutch |
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Application publication date: 20170905 |
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