CN105403405B - Fatigue testing device for driving belt - Google Patents
Fatigue testing device for driving belt Download PDFInfo
- Publication number
- CN105403405B CN105403405B CN201510921148.3A CN201510921148A CN105403405B CN 105403405 B CN105403405 B CN 105403405B CN 201510921148 A CN201510921148 A CN 201510921148A CN 105403405 B CN105403405 B CN 105403405B
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- transmission belt
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- energy storage
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- 238000009661 fatigue test Methods 0.000 title claims abstract description 25
- 230000005540 biological transmission Effects 0.000 claims abstract description 100
- 238000004146 energy storage Methods 0.000 claims abstract description 74
- 238000012360 testing method Methods 0.000 claims abstract description 63
- 239000002828 fuel tank Substances 0.000 claims description 17
- 239000000446 fuel Substances 0.000 claims description 16
- 239000003921 oil Substances 0.000 description 86
- 239000010720 hydraulic oil Substances 0.000 description 32
- 230000000694 effects Effects 0.000 description 4
- 238000000605 extraction Methods 0.000 description 4
- 230000005611 electricity Effects 0.000 description 3
- 238000004064 recycling Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 230000003139 buffering effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000010727 cylinder oil Substances 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003116 impacting effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000021715 photosynthesis, light harvesting Effects 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
- G01M13/02—Gearings; Transmission mechanisms
- G01M13/023—Power-transmitting endless elements, e.g. belts or chains
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
The invention provides a fatigue testing device for a driving belt. This fatigue test device of drive belt includes first test portion, second test portion, driving piece and energy storage portion, and first test portion includes: the device comprises a first test board and a driving piston cylinder group; the second test section includes: a second test station and a load piston cylinder group. According to the fatigue testing device for the transmission belt, the energy storage device is additionally arranged in the fatigue testing hydraulic system, so that the energy storage device and the hydraulic pump provide energy for testing the two toothed belts together, energy is saved, and efficiency is improved.
Description
Technical field
The present invention relates to technical field of wind power generation, more particularly to a kind of fatigue test device of transmission belt.
Background technology
Wind power generating set is in normal operation, and often with the operation operation for becoming oar, it is wind-force hair that cog belt, which becomes oar,
A kind of important change oar technological means of group of motors.It is relevant with the environment residing for blower fan to become the frequent degree of oar action, in severe
Unit under environment requires very high to the fatigue behaviour of blower fan cog belt, and general to require to be not less than 20 years, offshore wind turbine requires tooth
The life-span of shape band is more than 25 years.
In order to confirm to become the service life of oar cog belt, generally use experimental test is verified.The experimental test of cog belt
Load mode has a variety of, has weight loading, hydraulic loaded and torque motor loading etc., but these load modes are to cog belt
While test, substantial amounts of energy is eventually consumed in the form of heat, noise etc., without recycling, thus
Cause the waste of the energy.
The content of the invention
It is an object of the invention to provide a kind of fatigue test device of transmission belt, energy during solving cog belt testing fatigue
Amount wastes the problem of serious.
To reach above-mentioned purpose, the embodiment provides a kind of fatigue test device of transmission belt, including first
Test department, the second test department, actuator and energy storage part, first test department include：First testboard, its rotatably arranged with
In first rotating shaft, and the first tested transmission belt is provided with first testboard；Piston cylinder group is driven, it includes connecting
It is connected on the first driving piston cylinder and the second driving piston cylinder on first testboard and positioned at the first rotating shaft both sides；Institute
Stating the second test department includes：Secondary test board, it is rotatably arranged in the second rotating shaft, and is set in the secondary test board
There is the second tested transmission belt, second transmission belt is driven band connection by linkage unit and described first, and with described
First conveyor belt motion；Load piston cylinder group, it includes being connected in the secondary test board and is located at second rotating shaft two
The the first load piston cylinder and the second load piston cylinder of side；The actuator passes through main oil passage and the described first driving piston cylinder
Or the second driving piston cylinder connection, and drive the piston rod for the piston cylinder being connected to stretch out；The energy storage part is connected to institute
State on the oil return branch road of the first load piston cylinder and/or the second load piston cylinder and collect energy, and the energy storage part energy
It is enough to provide energy to the described first driving piston cylinder and/or the second driving piston cylinder.
Further, the linkage unit includes the first drive and described second coordinated with first transmission belt
The second drive and power transmission shaft that transmission belt coordinates, the first drive and second drive described in the transmission axis connection.
Further, first test department also includes the first tensioning wheel, and first tensioning wheel is pressed on described first
On transmission belt, and first tensioning wheel is located at the both sides of first transmission belt with first drive；Described second surveys
Examination portion also includes the second tensioning wheel, and second tensioning wheel is pressed on second transmission belt, and second tensioning wheel with
Second drive is located at the both sides of second transmission belt.
Further, first test department also includes main oil return line and the first control valve, and first control valve is set
Between the main oil passage, the main oil return line, the first driving piston cylinder and the second driving piston cylinder, described the
One control valve has positive switching stations, reversion station and standby station, during in the standby station, the main oil passage and described
Main oil return line connection, the first driving piston cylinder and the second driving piston cylinder are non-telescope；During in the positive switching stations, the main confession
Oil circuit connects with the rodless cavity of the described first driving piston cylinder, the rodless cavity of the main oil return line and the described second driving piston cylinder
Connection；During in the reversion station, the main oil passage connects with the rodless cavity of the described second driving piston cylinder, and the master returns
Oil circuit connects with the rodless cavity of the described first driving piston cylinder.
Further, first control valve is proportional reversing valve, the P mouths of first control valve and the main oil passage
Connection, the R mouths of first control valve are connected with the main oil return line, the A mouths of first control valve and the described first driving
The rodless cavity connection of piston cylinder, the B mouths of first control valve connect with the rodless cavity of the described second driving piston cylinder, in institute
When stating standby station, the P mouths of first control valve are connected with R mouths, and A mouths and B mouths are turned off；During in the positive switching stations,
The P mouths of first control valve connect with A mouths, and R mouths connect with B mouths；During in the reversion station, first control valve
P mouths connect with B mouths, and R mouths connect with A mouths.
Further, the energy storage part is connected by energy storage fuel feeding branch road with main oil passage, on the energy storage fuel feeding branch road
It is provided with the second control valve for controlling its break-make.
Further, it is also associated with protecting branch road on the energy storage fuel feeding branch road, one end of the protection branch road is connected to
On energy storage fuel feeding branch road between the energy storage part and second control valve, the other end of the protection branch road connects with fuel tank
Connect, protection overflow valve is provided with the protection branch road.
Further, it is additionally provided with orifice valve between second control valve and corresponding energy storage part.
Further, the energy storage part is two, and the rodless cavity of the first load piston cylinder and an oil return branch road connect
Connect, one of them described energy storage part is connected with the oil return branch road of the first load piston cylinder, in the first load piston cylinder
The first overflow valve for controlling the first load piston cylinder oil pressure relief is provided between the energy storage part；Second load
The rodless cavity of piston cylinder is connected with another oil return branch road, the oil return of another described energy storage part and the second load piston cylinder
Branch road is connected, and control the second load piston cylinder is provided between the second load piston cylinder and corresponding energy storage part and is overflow
Second overflow valve of flowing pressure.
Further, the rodless cavity of the first load piston cylinder is connected by the first oil-feed branch road with fuel tank, and described
First that control the first oil-feed branch road break-make is provided with one oil-feed branch road enters oil control valve；The second load piston cylinder
Rodless cavity be connected by the second oil-feed branch road with fuel tank, control the second oil-feed branch is provided with the second oil-feed branch road
The second of road break-make enters oil control valve.
Further, the cylinder diameter of the first driving piston cylinder is consistent with the cylinder diameter of the described second driving piston cylinder, described
The cylinder diameter of first load piston cylinder is consistent with the cylinder diameter of the second load piston cylinder, and the cylinder diameter of the first driving piston cylinder is more than
The cylinder diameter of the first load piston cylinder.
The fatigue test device of the transmission belt of the embodiment of the present invention, filled by increasing energy storage in testing fatigue hydraulic system
Put so that energy storage device and hydraulic pump provide energy for the test of two cog belts together, both save energy, improve effect again
Rate.
Brief description of the drawings
Fig. 1 is the structural representation of the fatigue test device of the transmission belt of the embodiment of the present invention.
Drawing reference numeral explanation：
1st, motor；2nd, actuator；3rd, the first control valve；4th, power transmission shaft；5th, the second control valve；6th, orifice valve；7th, protect
Overflow valve；8th, energy storage part；91st, the first overflow valve；92nd, the second overflow valve；101st, the first load piston cylinder；102nd, the second load is lived
Plug cylinder；11st, filter；121st, first enters oil control valve；122nd, second enters oil control valve；131st, the first driving piston cylinder；132、
Second driving piston cylinder；141st, the first testboard；142nd, secondary test board；151st, the first transmission belt；152nd, the second transmission belt；
161st, the first drive；162nd, the second drive；171st, the first tensioning wheel；172nd, the second tensioning wheel；18th, radiator；191st,
One rotating shaft；192nd, the second rotating shaft；20th, main overflow valve.
Embodiment
Embodiments of the present invention is described in detail below in conjunction with the accompanying drawings.
As shown in figure 1, according to an embodiment of the invention, the fatigue test device of transmission belt includes the first test department, second
Test department, actuator 2 and energy storage part 8.Wherein, the first test department includes：First testboard 141 and driving piston cylinder group.First
Testboard 141 is rotatably arranged in first rotating shaft 191, and is fixedly installed the first tested transmission belt 151 thereon.Drive
Piston cylinder group includes being connected on the first testboard 141 and positioned at the first driving He of piston cylinder 131 of the both sides of first rotating shaft 191
Second driving piston cylinder 132.
Second test department includes：Secondary test board 142 and load piston cylinder group.Secondary test board 142 rotatably arranged with
In the second rotating shaft 192, and the second tested transmission belt 152 is fixedly installed thereon, the second transmission belt 152 passes through linkage groups
Part is connected with the first transmission belt 151, and is moved with the first transmission belt 151.Load piston cylinder group includes being connected to secondary test board
On 142 and positioned at the first load piston cylinder 101 and the second load piston cylinder 102 of the both sides of the second rotating shaft 192.
Energy storage part 8 is connected on the oil return branch road of the first load piston cylinder 101 and/or the second load piston cylinder 102 and received
Collect energy, and energy storage part 8 can drive piston cylinder 132 to provide energy to the first driving piston cylinder 131 and/or second.
Actuator 2 drives piston cylinder 132 to connect by main oil passage with the first driving piston cylinder 131 or second, and drives
The piston rod for the piston cylinder being connected stretches out, so that the first driving piston cylinder 131 or second drives piston cylinder 132 to promote first to survey
Test stand 141 rotates around first rotating shaft 191, so that the first transmission belt 151 is servo-actuated.After first transmission belt 151 is servo-actuated, pass through linkage
Component is driven, and drives the second transmission belt 152 to rotate, and then drives secondary test board 142 to be rotated around the second rotating shaft 192, so as to
Compress the first load piston cylinder 101 or the second load piston cylinder 102 that are connected thereto so that the first load piston cylinder 101 or
Second load piston cylinder, 102 outside oil extraction, the oil of discharge enter in energy storage part 8, are collected and preserved by energy storage part 8.First load
When energy storage part 8 is entered in 101 or second load piston cylinder of piston cylinder, 102 outside oil extraction, the input pressure of energy storage part 8 is formed to first
The load of the transmission belt 152 of transmission belt 151 and second, thus achieve and the bringing onto load of two transmission belts is tested.When needed, store up
The oil of preservation can be supplied to the first driving piston cylinder 131 or the second driving piston cylinder 132 by energy portion 8 together with actuator 2, by
This realizes the recycling of energy, reduces energy dissipation.
Preferably, the first testboard 141 and secondary test board 142 are sector disks.Sector disk is meeting test needs
Under the premise of, occupy little space, and be easy to connection driving piston cylinder group and firm group of load piston, easy installation and removal.Need
It is that in the present embodiment, the first driving piston cylinder 131 and second drives the testboard 141 of piston cylinder 132 and first be hinged, to prevent
Only interfere；Similarly, the first load piston cylinder 101 and the second load piston cylinder 102 and secondary test board 142 are be hinged.At other
In embodiment, driving piston cylinder group can be connected by flexible piece with the connected mode of the first testboard 141；Similarly, bear
It can also be connected by flexible piece that piston cylinder group, which is carried, with the connected mode of secondary test board 142, or can be protected using other
The mode of card normal work connects.
In the present embodiment, linkage unit includes the first drive 161, the second drive 162 and power transmission shaft 4.Wherein,
One drive 161 coordinates with the first transmission belt 151；Second drive 162 coordinates with the second transmission belt 152；The power transmission shaft 4 connects
First drive 161 and the second drive 162.First transmission belt 151 rotates and drives the first drive 161 to rotate, Jin Erchuan
Moving axis 4 is driven, and rotation is transferred on the second drive 162, makes its rotation, final to drive the second transmission belt 152 synchronous
Rotate.
It is used for the tooth for variable pitch to wind power generating set due to the fatigue test device of the transmission belt in the present embodiment
Shape band is tested, and therefore, the first drive 161 and the second drive 162 are preferably and cog belt meshed gears.Certainly,
If the first transmission belt 151 and the second transmission belt 152 are other forms, the first drive 161 and the second drive 162 can be with
Its drive being adapted to.
Certainly, in other embodiments, the first transmission belt 151 and can be realized by forms such as V belt translation or Chain conveyers
The transmission of two transmission belts 152.
Preferably, in order to ensure that transmission is accurate reliable, so as to ensure to test high efficient and reliable, the first test department also includes first
Tensioning wheel 171, the first tensioning wheel 171 are pressed on the first transmission belt 151, and the first tensioning wheel 171 and the first drive 161
In the both sides of the first transmission belt 151.Coordinated by the first tensioning wheel 171 and the first drive 161, open the first transmission belt 151
Tightly, so ensure reliable transmission.
Similarly, the second test department also includes the second tensioning wheel 172, and the second tensioning wheel 172 is pressed on the second transmission belt 152
On, and the second tensioning wheel 172 and the second drive 162 are located at the both sides of the second transmission belt 152, so that the second transmission belt 152 is opened
Tightly.
In the present embodiment, actuator 2 is hydraulic pump.The hydraulic pump can be constant displacement pump or variable pump, itself and motor 1
Connection, is driven by motor 1 and hydraulic oil is extracted from fuel tank, the oil-out of hydraulic pump is connected with main oil passage, by hydraulic oil
It is delivered in main oil passage.
First test department also includes main oil return line and the first control valve 3.First control valve 3 is preferably proportional reversing valve, its
For controlling the flow direction of hydraulic oil.First control valve 3 is arranged on main oil passage, main oil return line, the first driving piston cylinder 131 and
Between second driving piston cylinder 132.
Specifically, the first control valve 3 is three-position four-way electromagnetic directional valve, and it has P mouths, R mouths, A mouths and B mouths.Wherein,
The P mouths of one control valve 3 are connected with main oil passage, and R mouths are connected with main oil return line, the rodless cavity of A mouths and the first driving piston cylinder 131
Connection, B mouths connect with the rodless cavity of the second driving piston cylinder 132.Because the first control valve 3 is solenoid directional control valve, thus it can
More easily to control station to change, use is more convenient.Certainly, the first control valve 3 is not limited to this, and it can be any energy
Enough valves or valve group for realizing commutation.
First control valve 3 has positive switching stations, reversion station and standby station.
When it is in standby station, the P mouths of the first control valve 3 are connected with R mouths, and A mouths and B mouths are turned off；Main oil passage
Connected with main oil return line, the hydraulic oil of hydraulic pump conveying is entered from main oil passage by the P mouths and R mouths of the first control valve 3 to be led back
Oil circuit, finally flows back to fuel tank, and the first driving piston cylinder 131 and second drives piston cylinder 132 non-telescope.
During in positive switching stations, the P mouths of the first control valve 3 connect with A mouths, and R mouths connect with B mouths；Main oil passage and first
The rodless cavity connection of piston cylinder 131 is driven, main oil return line connects with the rodless cavity of the second driving piston cylinder 132, and hydraulic oil passes through
Main oil passage enters the rodless cavity of the first driving piston cylinder 131, and the piston rod of the first driving piston cylinder 131 stretches out, the first test
Platform 141 is promoted and rotates clockwise and (rotate forward), and the piston rod of the second driving piston cylinder 132, which is pressurized, to be moved down, and hydraulic oil passes through
First control valve 3 and main oil return line flow into fuel tank.
During in reversion station, the P mouths of the first control valve 3 connect with B mouths, and R mouths connect with A mouths；Main oil passage and second
The rodless cavity connection of piston cylinder 132 is driven, main oil return line connects with the rodless cavity of the first driving piston cylinder 131, and hydraulic oil passes through
Main oil passage enters the rodless cavity of the second driving piston cylinder 132, and the piston rod of the second driving piston cylinder 132 stretches out, the first test
Platform 141 is promoted and rotates counterclockwise and (invert), and the piston rod of the first driving piston cylinder 131, which is pressurized, to be moved down, and hydraulic oil passes through
First control valve 3 and main oil return line flow into fuel tank.
Energy storage part 8 can be energy storage oil tank, and it is used to collect the first load piston cylinder 101 and/or the second load piston cylinder
The hydraulic oil of 102 discharges, and hydraulic oil is delivered to the first driving piston cylinder 131 and/or the second driving piston cylinder when needed
132。
In the present embodiment, energy storage oil tank be two, one of them is connected with the first load piston cylinder 101, another with
Second load piston cylinder 102 connects.Certainly, in other embodiments, energy storage oil tank can only set one, and simultaneously with first
The load piston cylinder 102 of load piston cylinder 101 and second connects, or is only connected with one of both.
Specifically, energy storage part 8 is connected by energy storage fuel feeding branch road with main oil passage, to be conveyed when needed to main oil passage
Hydraulic oil.In the present embodiment, the second control valve 5 for controlling its break-make is provided with energy storage fuel feeding branch road, to control as needed
The fuel feeding of energy storage part 8 processed.
For the ease of control, automatization level is improved, the second control valve 5 is magnetic valve.It has fuel feeding station and cut-off
Station.When needing fuel feeding, the second control valve 5 is in fuel feeding station, and energy storage part 8 connects with main oil passage, otherwise in cut-off
Station.
Preferably, it is additionally provided with orifice valve 6 between the second control valve 5 and corresponding energy storage part 8.The effect of the orifice valve 6
It is throttling buffering, damages the second control valve 5 to prevent from impacting excessive, improve the service life of the second control valve 5, increase is reliable
Property.
It is highly preferred that in order to prevent that oil pressure is too high, ensure the security of each element in oil circuit, also connect on energy storage fuel feeding branch road
Protection branch road is connected to, one end of the protection branch road is connected on the energy storage fuel feeding branch road between the control valve 5 of energy storage part 8 and second,
The other end is connected with fuel tank.Protection overflow valve 7 is provided with protection branch road, the protection overflow valve 7 can be pressure-control valve, when
When pressure is excessive in system, hydraulic oil is by protecting overflow valve 7 to flow into fuel tank.
The rodless cavity of first load piston cylinder 101 is connected by an oil return branch road with an energy storage part 8.In order to facilitate control
System is applied to the load on the first transmission belt 151 and the second transmission belt 152, and the load of control first is provided with oil return branch road and is lived
First overflow valve 91 of the oil pressure relief of plug cylinder 101.So controlled by adjusting the oil pressure relief can of the first overflow valve 91
The load being applied on the first transmission belt 151 and the second transmission belt 152.
Preferably, the first overflow valve 91 is proportional pressure control valve, is so more convenient for adjusting the first overflow valve 91.
The rodless cavity of second load piston cylinder 102 is connected by another oil return branch road with another energy storage part 8.The oil return
The second overflow valve 92 of the control oil pressure relief of the second load piston cylinder 102 is provided with branch road.The effect of second overflow valve 92 with
The effect of first overflow valve 91 is identical.
In the present embodiment, with the rotation of the first testboard 141, secondary test board 142 also and then rotates, and is connected to the
The piston rod of a load piston cylinder on two testboards 142 is pressurized, another piston rod tension.The load that piston rod is pressurized
The pressure of hydraulic oil in piston cylinder necessarily be greater than oil pressure relief could be by corresponding overflow valve overflow, therefore it will be to
Two testboards 142 apply resistance, and this resistance forms the load being applied on the first transmission belt 151 and the second transmission belt 152.
Vacuum is formed in the rodless cavity of the load piston cylinder of piston rod tension, it is necessary to supplement hydraulic oil.Therefore, the first load
The rodless cavity of piston cylinder 101 is connected by the first oil-feed branch road with fuel tank, and the rodless cavity of the second load piston cylinder 102 passes through second
Oil-feed branch road connects with fuel tank.
The of the first oil-feed branch road break-make of control is provided with order to ensure the reliability of system work, on the first oil-feed branch road
One enters oil control valve 121, so as to make when needed the first oil-feed branch road connect, it is not necessary to when can block the first oil-feed branch
Road.Similarly, second that the second oil-feed branch road break-make of control is provided with the second oil-feed branch road enters oil control valve 122.
In the present embodiment, first enters oil control valve 121 and second to enter oil control valve 122 be check valve.In other implementations
In example, first, which enters oil control valve 121 and second, enters oil control valve 122 can be that switch valve or solenoid directional control valve etc. are any can expire
The valve needed enough.
Preferably, in order to ensure the reliability of whole hydraulic system, main overflow valve 20 is provided with main oil passage, so as to
Overflow when pressure exceedes safety value in system, ensure system safety.
The course of work of the embodiment of the present invention is：Work as system energization, motor 1 drives actuator 2 to operate, hydraulic pressure in fuel tank
Oil is sucked out, and into main oil passage, by the first control valve 3, now, the first control valve 3 is in positive switching stations, and electromagnet a is obtained
Electricity, b dead electricity, P mouths connect with A mouths, R mouths connect with B mouths, and hydraulic oil enters the rodless cavity of the first driving piston cylinder 131, promotes it
Piston rod stretches out, and piston rod promotes the first testboard 141 to turn clockwise, and the first testboard 141 promotes the second driving piston cylinder
132 piston rod is retracted, and the hydraulic oil in the rodless cavity of the second driving piston cylinder 132 flows back to fuel tank by the first control valve 3.
First testboard 141 around first rotating shaft 191 rotate when, the first transmission belt 151 moves therewith, the first transmission belt 151
The first drive 161 is driven to rotate, the first drive 161 is connected with the second drive 162 by same root power transmission shaft 4, jointly
Rotation, rotating speed is identical, and the second drive 162 drives the second transmission belt 152 to rotate, and the second transmission belt 152 drives secondary test board
142 turn clockwise, and secondary test board 142 pushes back the piston rod of the second load piston cylinder 102, the second load piston cylinder 102
Rodless cavity in hydraulic oil discharge, the presence and second due to the second overflow valve 92 enter oil control valve 122 close, it is necessary to
Oil pressure when reaching preset value could overflow, therefore it forms to the second transmission belt 152 and the first transmission belt 151 and loaded.First is negative
The piston cylinder tension for carrying piston cylinder 101 is stretched out, and the first load piston cylinder 101 passes through the first oil-feed branch road oil-feed, the first oil-feed control
Valve 121 processed is opened.
In order to ensure the cylinder diameter of system run all right, the cylinder diameter of the first driving piston cylinder 131 and the second driving piston cylinder 132
Unanimously.The cylinder diameter of the cylinder diameter of first load piston cylinder 101 and the second load piston cylinder 102 is consistent.First driving piston cylinder 131
Cylinder diameter is more than the cylinder diameter of the first load piston cylinder 101, to ensure that it has enough appearance oil abilities.
The hydraulic oil flowed out from the second overflow valve 92 enters in the energy storage part 8 being attached thereto.To ensure the energy of energy storage part 8
Enough normal oil-feeds, second control valve 5 corresponding with the energy storage part 8 are closed.
And the oil-filled hydraulic pressure value of energy storage part 8 is designed to the given threshold less than the second overflow valve 92, to ensure hydraulic oil energy
Enough pass through the second overflow valve 92.
Preferably, the given threshold of the first overflow valve 91 and the second overflow valve 92 is more than the first driving piston cylinder 131 and the
The hydraulic pressure value of the hydraulic pressure value of two driving piston cylinders 132, the first load piston cylinder 101 and the second load piston cylinder 102 is more than first
Piston cylinder 131 and second is driven to drive the hydraulic pressure value of piston cylinder 132, with the thrust phase of proof load piston cylinder and driving piston cylinder
Together, and test load is met.
At the same time, the 8 outside oil extraction of energy storage part being connected with the first load piston cylinder 101, connected second control
Valve 5 is in open mode, and hydraulic oil flows out through the control valve 5 of orifice valve 6 and second from energy storage part 8 and enters main oil passage, so as to
Enter together with the hydraulic oil transferred out with actuator 2 in the rodless cavity of the first driving piston cylinder 131.
It is reliably oil-filled in order to guarantee, the oil-filled hydraulic pressure value of energy storage part 8 is designed to be more than the first driving piston cylinder
131 and second driving piston cylinder 132 hydraulic pressure value to ensure that hydraulic oil can flow to the first driving piston cylinder 131 from energy storage part 8
With the second driving piston cylinder 132.More preferably, by the Capacity design of energy storage part 8 into negative more than the first load piston cylinder 101 and second
The work discharge capacity of piston cylinder 102 is carried, to ensure that energy storage part 8 there are enough spaces to store hydraulic oil.
Further, the transmission belt tested in the embodiment of the present invention can be cog belt, belt, V-belt etc., correspondingly,
Drive is gear, roller etc..More preferably, filter 11 is set on main oil passage and two oil-feed branch roads, to ensure supply system
The cleaning of the hydraulic oil of system；Radiator 18 is additionally provided with the system, to prevent from influenceing due to heat caused by system operation
The performance of hydraulic oil.
When the first control valve 3 is in reversion station, electromagnet a dead electricity, b obtain electric, and P mouths connect with B mouths, R mouths and A mouths company
Logical, hydraulic oil enters the rodless cavity of the second driving piston cylinder 132, promotes its piston rod to stretch out, piston rod promotes secondary test board
142 rotate counterclockwises, secondary test board 142 promote the piston rod of the first driving piston cylinder 131 to retract, the first driving piston cylinder
Hydraulic oil in 131 rodless cavity flows back to fuel tank by the first control valve 3.
First testboard 141 around first rotating shaft 191 rotate when, the first transmission belt 151 moves therewith, the first transmission belt 151
The first drive 161 is driven to rotate, the first drive 161 is connected with the second drive 162 by same root power transmission shaft 4, jointly
Rotation, rotating speed is identical, and the second drive 162 drives the second transmission belt 152 to rotate, and the second transmission belt 152 drives secondary test board
142 rotate counterclockwises, secondary test board 142 push back the piston rod of the first load piston cylinder 101, the first load piston cylinder 101
Rodless cavity in hydraulic oil discharge, the presence and first due to the first overflow valve 91 enter oil control valve 121 close, it is necessary to
Oil pressure when reaching preset value could overflow, therefore it forms to the second transmission belt 152 and the first transmission belt 151 and loaded.Second is negative
The piston cylinder tension for carrying piston cylinder 102 is stretched out, and the second load piston cylinder 102 passes through the second oil-feed branch road oil-feed, the second oil-feed control
Valve 122 processed is opened.
The hydraulic oil flowed out from the first overflow valve 91 enters in the energy storage part 8 being attached thereto.To ensure the energy of energy storage part 8
Enough normal oil-feeds, second control valve 5 corresponding with the energy storage part 8 are closed.
And the oil-filled hydraulic pressure value of energy storage part 8 is designed to the given threshold less than the first overflow valve 91, to ensure hydraulic oil energy
Enough pass through the first overflow valve 91.
At the same time, the 8 outside oil extraction of energy storage part being connected with the second load piston cylinder 102, connected second control
Valve 5 is in open mode, and hydraulic oil flows out through the control valve 5 of orifice valve 6 and second from energy storage part 8 and enters main oil passage, so as to
Enter together with the hydraulic oil transferred out with actuator 2 in the rodless cavity of the second driving piston cylinder 132.So repeatedly, transmission is brought into
Row loop test.
The fatigue test device of transmission belt provided in an embodiment of the present invention, stored up by increasing in testing fatigue hydraulic system
Energy device so that energy storage device and hydraulic pump provide energy for the test of two cog belts together, both save energy, improve again
Efficiency.
The foregoing is only a specific embodiment of the invention, but protection scope of the present invention is not limited thereto, any
Those familiar with the art the invention discloses technical scope in, change or replacement can be readily occurred in, should all be contained
Cover within protection scope of the present invention.Therefore, protection scope of the present invention should be based on the protection scope of the described claims.
Claims (11)
1. a kind of fatigue test device of transmission belt, it is characterised in that including the first test department, the second test department, actuator (2)
With energy storage part (8),
First test department includes：
First testboard (141), it is rotatably arranged in first rotating shaft (191), and is set on first testboard (141)
It is equipped with tested the first transmission belt (151)；
Piston cylinder group is driven, it includes being connected on first testboard (141) and is located at the first rotating shaft (191) both sides
First driving piston cylinder (131) and second drive piston cylinder (132)；
Second test department includes：
Secondary test board (142), it is rotatably arranged in the second rotating shaft (192), and is set in the secondary test board (142)
Tested the second transmission belt (152) is equipped with, second transmission belt (152) passes through linkage unit and first transmission belt
(151) connect, and moved with first transmission belt (151)；
Load piston cylinder group, it includes being connected in the secondary test board (142) and is located at the second rotating shaft (192) both sides
The first load piston cylinder (101) and the second load piston cylinder (102)；
The actuator (2) passes through main oil passage and the described first driving piston cylinder (131) or the second driving piston cylinder
(132) connect, and drive the piston rod for the piston cylinder being connected to stretch out；
The energy storage part (8) is connected to the first load piston cylinder (101) and/or the second load piston cylinder (102)
On oil return branch road and collect energy, and the energy storage part (8) can be to the described first driving piston cylinder (131) and/or described the
Two driving piston cylinders (132) provide energy.
2. the fatigue test device of transmission belt according to claim 1, it is characterised in that the linkage unit includes and institute
State the first drive (161), the second drive coordinated with second transmission belt (152) of the first transmission belt (151) cooperation
(162) and power transmission shaft (4), the power transmission shaft (4) connect first drive (161) and second drive (162).
3. the fatigue test device of transmission belt according to claim 2, it is characterised in that first test department also includes
First tensioning wheel (171), first tensioning wheel (171) are pressed on first transmission belt (151), and first tensioning
Wheel (171) is located at the both sides of first transmission belt (151) with first drive (161)；
Second test department also includes the second tensioning wheel (172), and second tensioning wheel (172) is pressed on second transmission
On band (152), and second tensioning wheel (172) is located at second transmission belt (152) with second drive (162)
Both sides.
4. the fatigue test device of transmission belt according to claim 1, it is characterised in that first test department also includes
Main oil return line and the first control valve (3), first control valve (3) are arranged on the main oil passage, the main oil return line, described
Between first driving piston cylinder (131) and the second driving piston cylinder (132), first control valve (3), which has, just to be changed a job
Position, reversion station and standby station,
During in the standby station, the main oil passage connects with the main oil return line, the first driving piston cylinder (131)
It is non-telescope with the described second driving piston cylinder (132)；
During in the positive switching stations, the main oil passage connects with the rodless cavity of the described first driving piston cylinder (131), described
Main oil return line connects with the rodless cavity of the described second driving piston cylinder (132)；
During in the reversion station, the main oil passage connects with the rodless cavity of the described second driving piston cylinder (132), described
Main oil return line connects with the rodless cavity of the described first driving piston cylinder (131).
5. the fatigue test device of transmission belt according to claim 4, it is characterised in that first control valve (3) is
Proportional reversing valve, the P mouths of first control valve (3) are connected with the main oil passage, the R mouths of first control valve (3) with
The main oil return line connection, the A mouths of first control valve (3) connect with the rodless cavity of the described first driving piston cylinder (131),
The B mouths of first control valve (3) connect with the rodless cavity of the described second driving piston cylinder (132),
During in the standby station, the P mouths of first control valve (3) are connected with R mouths, and A mouths and B mouths are turned off；
During in the positive switching stations, the P mouths of first control valve (3) connect with A mouths, and R mouths connect with B mouths；
During in the reversion station, the P mouths of first control valve (3) connect with B mouths, and R mouths connect with A mouths.
6. the fatigue test device of transmission belt according to any one of claim 1 to 4, it is characterised in that the energy storage
Portion (8) is connected by energy storage fuel feeding branch road with the main oil passage, is provided with the energy storage fuel feeding branch road and is controlled its break-make
Second control valve (5).
7. the fatigue test device of transmission belt according to claim 6, it is characterised in that on the energy storage fuel feeding branch road also
Protection branch road is connected with, one end of the protection branch road is connected between the energy storage part (8) and second control valve (5)
On the energy storage fuel feeding branch road, the other end of the protection branch road is connected with fuel tank, and being provided with protection on the protection branch road overflows
Flow valve (7).
8. the fatigue test device of transmission belt according to claim 6, it is characterised in that second control valve (5) with
Orifice valve (6) is additionally provided between corresponding energy storage part.
9. the fatigue test device of transmission belt according to claim 1, it is characterised in that the energy storage part (8) is two,
The rodless cavity of the first load piston cylinder (101) is connected with an oil return branch road, one of them described energy storage part
(8) the oil return branch road with the first load piston cylinder (101) is connected, in the first load piston cylinder (101) and the storage
The first overflow valve (91) for controlling the first load piston cylinder (101) oil pressure relief is provided between energy portion (8)；
The rodless cavity of the second load piston cylinder (102) is connected with oil return branch road another described, another described energy storage part
(8) the oil return branch road with the second load piston cylinder (102) is connected, the second load piston cylinder (102) with it is corresponding
The second overflow valve (92) for controlling the second load piston cylinder (102) oil pressure relief is provided between energy storage part (8).
10. the fatigue test device of transmission belt according to claim 1, it is characterised in that
The rodless cavity of the first load piston cylinder (101) is connected by the first oil-feed branch road with fuel tank, the first oil-feed branch
First that control the first oil-feed branch road break-make is provided with road enters oil control valve (121)；
The rodless cavity of the second load piston cylinder (102) is connected by the second oil-feed branch road with fuel tank, the second oil-feed branch
Second that control the second oil-feed branch road break-make is provided with road enters oil control valve (122).
11. the fatigue test device of transmission belt according to claim 1, it is characterised in that the first driving piston cylinder
(131) cylinder diameter is consistent with the cylinder diameter of the described second driving piston cylinder (132), the cylinder diameter of the first load piston cylinder (101)
It is consistent with the cylinder diameter of the second load piston cylinder (102), and the cylinder diameter of the first driving piston cylinder (131) is negative more than described first
Carry the cylinder diameter of piston cylinder (101).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510921148.3A CN105403405B (en) | 2015-12-11 | 2015-12-11 | Fatigue testing device for driving belt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510921148.3A CN105403405B (en) | 2015-12-11 | 2015-12-11 | Fatigue testing device for driving belt |
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| Publication Number | Publication Date |
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| CN105403405A CN105403405A (en) | 2016-03-16 |
| CN105403405B true CN105403405B (en) | 2018-03-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510921148.3A Active CN105403405B (en) | 2015-12-11 | 2015-12-11 | Fatigue testing device for driving belt |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106969912B (en) * | 2017-05-04 | 2019-08-30 | 北京金风科创风电设备有限公司 | Fatigue test tool, fatigue test machine and fatigue test method for transmission belt |
| CN115077897B (en) * | 2022-06-22 | 2023-08-08 | 燕山大学 | Toothed belt dynamic fatigue test device used in salt fog environment |
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|---|---|
| CN105403405A (en) | 2016-03-16 |
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