CN105403406B - toothed belt fatigue test device - Google Patents
toothed belt fatigue test device Download PDFInfo
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- CN105403406B CN105403406B CN201510921178.4A CN201510921178A CN105403406B CN 105403406 B CN105403406 B CN 105403406B CN 201510921178 A CN201510921178 A CN 201510921178A CN 105403406 B CN105403406 B CN 105403406B
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- 238000009661 fatigue test Methods 0.000 title claims abstract description 9
- 238000012360 testing method Methods 0.000 claims abstract description 65
- 239000002828 fuel tank Substances 0.000 claims description 33
- 239000012530 fluid Substances 0.000 claims description 24
- 239000002243 precursor Substances 0.000 claims description 12
- 238000000605 extraction Methods 0.000 claims description 5
- 238000001514 detection method Methods 0.000 claims 1
- 239000003921 oil Substances 0.000 description 32
- 239000010720 hydraulic oil Substances 0.000 description 8
- 238000000034 method Methods 0.000 description 8
- 230000001276 controlling effect Effects 0.000 description 6
- 238000010276 construction Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 3
- 230000005611 electricity Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 230000001105 regulatory 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
-
- 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
- G01M13/025—Test-benches with rotational drive means and loading means; Load or drive simulation
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The embodiment of the invention provides a toothed belt fatigue test device. This toothed belt fatigue test device includes: the device comprises a rotary test bed, a test device and a control device, wherein two ends of a tested toothed belt are fixedly arranged on the rotary test bed and the toothed belt is tensioned; the driving gear is meshed with the toothed belt and can drive the toothed belt to rotate; the load piston cylinder comprises a piston rod and a cylinder barrel, the telescopic end of the piston rod is connected to the rotation test bed, the piston rod is driven by the rotation test bed to move, an oil port communicated with the rodless cavity is formed in the cylinder barrel, and the oil port is connected with the oil tank through a connecting pipe; and the overflow valve is arranged between the oil port and the oil tank and controls the oil discharge pressure of the rodless cavity. The toothed belt fatigue test device has the advantages of compact structure, convenience in use, accuracy in control and the like, and can effectively test the fatigue performance of the toothed belt.
Description
Technical field
The present invention relates to wind-power electricity generation auxiliary equipment field, more particularly to a kind of cog belt fatigue experimental device.
Background technology
Cog belt becomes a kind of important change oar technology that oar is Large-scale Wind Turbines, due to the building ring of wind-driven generator
Border is complex, and becomes oar and act frequently, therefore the fatigue behaviour to becoming oar cog belt requires higher, general to require to become oar cog belt
Life-span be not less than 20 years.
Testing the method for cog belt fatigue life can use cog belt on-hook to test, and cog belt is arranged on wind-power electricity generation
On unit, its characteristic is judged in the postrun test result of wind-driven generator by cog belt.Such a method test period compared with
It is long, and uncertainty in test process be present, it is less in current practical application to use.
At present, the method for testing cog belt fatigue life is mainly carried out in laboratory, passes through cog belt fatigue experimental device
Wind-driven generator simulation becomes oar running situation, pulls cog belt run with load, and the fatigue life of cog belt is tested with this.It is existing
Experimental rig load mode be to hang up weight at cog belt both ends, rotated and reverse by drive gear to drive cog belt to draw
Weight is played and transferred, cog belt fatigue life is tested during so continuous circular flow.But existing experiment dress
Put needs and hang more bulky load, and load weight adjustment is more troublesome, and it is inconvenient for use to carry out tooth form girdle tests so that survey
Try less efficient.
The content of the invention
Embodiments of the invention provide a kind of cog belt fatigue experimental device, are filled with solving existing cog belt fatigue test
Put the problem of inconvenient for use.
To reach above-mentioned purpose, embodiments of the invention provide a kind of cog belt fatigue experimental device, including：Rotate experiment
Platform, the both ends of tested cog belt are fixedly installed on rotation testing stand and cog belt is tensioned；Drive gear, itself and cog belt
Engage and cog belt can be driven to rotate；Load piston cylinder, it includes piston rod and cylinder barrel, and the telescopic end of piston rod, which is connected to, to be turned
On dynamic test platform, and piston rod is moved by the driving for rotating testing stand, and the hydraulic fluid port connected with rodless cavity is provided with cylinder barrel, oil
Mouth is connected by connecting tube with fuel tank；Overflow valve, it is arranged between hydraulic fluid port and fuel tank, and controls the oil extraction pressure of rodless cavity.
Further, overflow valve is proportional pressure control valve.
Further, overflow valve is precursor overflow valve, and cog belt fatigue experimental device also includes Regulation Control valve, pressure regulation control
Valve processed is proportional pressure control valve, and the oil inlet of proportional pressure control valve and the remote control mouth of precursor overflow valve connect, proportional pressure control valve it is fuel-displaced
Mouth connects with fuel tank.
Further, cog belt fatigue experimental device also includes pressure detector and controller, and pressure detector is arranged on
Between hydraulic fluid port and overflow valve, and it is electrically connected with the controller, controller is connected with overflow valve, and the inspection fed back according to pressure detector
Measuring pressure controls proportional pressure control valve.
Further, cog belt fatigue experimental device also includes oil-feed branch road, one end of oil-feed branch road be connected to hydraulic fluid port with
Between overflow valve, the other end of oil-feed branch road connection fuel tank, be provided with oil-feed branch road control its break-make enter oil control valve.
Further, it is check valve to enter oil control valve.
Further, cog belt fatigue experimental device also includes oil-feed branch road, one end of oil-feed branch road be connected to hydraulic fluid port with
Between overflow valve, the other end of oil-feed branch road connects fuel tank, and two four-way electromagnetics for controlling its break-make are provided with oil-feed branch road
Valve, two position four-way solenoid valves have P mouths, T mouths, A mouths and B mouths, and P mouths are connected with fuel tank, and T mouths are connected with fuel tank, and A mouths connect with hydraulic fluid port
Connect, the oil-out connection of B mouths and overflow valve；Two position four-way solenoid valves have left side station and right side station, in left side station
When, P mouths are connected with A mouths, and T mouths and B mouths are turned off, the connection of oil-feed branch road；During in right side station, P mouths and A mouths are turned off, T mouths
Connected with B mouths, oil-feed branch road blocks.
Further, cog belt fatigue experimental device also includes contact roller, and contact roller is pressed on cog belt, and contact roller
It is located at the both sides of cog belt with drive gear.
Further, cog belt fatigue experimental device includes two load piston cylinder groups, and each load piston cylinder group includes
At least one load piston cylinder, two load piston cylinder groups are with rotating the link position of testing stand positioned at the rotating shaft for rotating testing stand
Both sides, overflow valve at least two, and with load piston cylinder group correspond.
Further, cog belt fatigue experimental device also includes radiator, and radiator is arranged between fuel tank and overflow valve.
Further, it is sector disk to rotate testing stand, and cog belt is arranged on the arc surface of sector disk.
Embodiments of the invention cog belt fatigue experimental device, load piston cylinder is controlled to add cog belt by overflow valve
Carry, and the fatigue behaviour of cog belt is tested during driving gear drives cog belt reciprocating rotation, can be effectively tested
Whether the fatigue behaviour for going out cog belt is qualified.
Brief description of the drawings
Fig. 1 is the structural representation of cog belt fatigue experimental device one embodiment of the present invention；
Fig. 2 is the structural representation of another embodiment of the cog belt fatigue experimental device of the present invention；
Fig. 3 is the structural representation of another embodiment of the cog belt fatigue experimental device of the present invention.
Description of reference numerals：
1st, testing stand is rotated；2nd, drive gear；3rd, load piston cylinder；31st, hydraulic fluid port；4th, overflow valve；41st, Regulation Control valve；
5th, pressure detector；6th, oil control valve is entered；61st, two position four-way solenoid valve；7th, contact roller；8th, fuel tank；81st, radiator；82nd, oil return
Filter；9th, cog belt.
Embodiment
The cog belt fatigue test device of the embodiment of the present invention is described in detail below in conjunction with the accompanying drawings.
Fig. 1 is the structural representation of cog belt fatigue experimental device one embodiment of the present invention, and the device can be used for surveying
Try the fatigue behaviour of the cog belt in various application environments, such as wind generating set pitch control cog belt.Certainly, the experimental rig
It can be also used for carrying out testing fatigue to other conveyer belts, conveyer chain.
As shown in figure 1, the cog belt fatigue experimental device include rotate testing stand 1, drive gear 2, load piston cylinder 3,
Overflow valve 4.Wherein, rotate testing stand 1 to be used to fix and be tensioned tested cog belt 9, concrete mode can be by cog belt 9
Both ends are fixedly installed on experiment of rotation platform.Drive gear 2 is used to drive cog belt 9 to rotate, and its tooth form is wanted can be with cog belt 9
It is meshed.The effect of load piston cylinder 3 is to provide load for cog belt 9, and it includes piston rod and cylinder barrel, the telescopic end of piston rod
It is connected to and rotates on testing stand 1, can be moved with the rotation for rotating testing stand 1, pressure medium (such as hydraulic pressure is filled in cylinder barrel
Oil) prevent piston rod movement, think cog belt 9 produce load.The hydraulic fluid port 31 connected with rodless cavity, hydraulic fluid port are provided with cylinder barrel
31 are connected by connecting tube with fuel tank 8.Overflow valve 4 is arranged on the connecting line between hydraulic fluid port 31 and fuel tank 8, to provide one
Back pressure, and then control the oil extraction pressure of rodless cavity.
Load is applied to rotating testing stand 1 by load piston cylinder 3, moves the bringing onto load of cog belt 9, to realize bringing onto load
Test.For example, when carrying out testing fatigue to cog belt 9, (or clockwise direction) rotates drive gear 2 in the counterclockwise direction,
And drive cog belt 9 to move, and then drive rotation testing stand 1 to rotate.Because the piston rod of load piston cylinder 3 is with rotating testing stand
1 connection (it can be hinged, ball connects or other connected modes), thus when rotating the rotation of testing stand 1, piston rod is pressurized, cylinder
Pressure medium in cylinder is flowed out by hydraulic fluid port 31, because the effect of overflow valve 4 causes cylinder cylinder pressure to exceed the overflow of overflow valve 4
During pressure, pressure medium ability overflow oil return box 8, thus a back pressure is established in cylinder barrel, it is applied with one for cog belt 9
Load.
In the present embodiment, it is sector disk to rotate testing stand 1, and it has arc surface, and the both ends of cog belt 9 are fixedly installed on
The both ends of the arc surface of sector disk, so that cog belt 9 can drive rotation testing stand 1 to rotate.Sector disk is rotatable by rotating shaft
Ground is arranged in other supporting constructions.
Preferably, cog belt fatigue experimental device also includes contact roller 7, and it is pressed on cog belt 9, and contact roller 7 with
Drive gear 2 is located at the both sides of cog belt 9, for compressing cog belt 9, make its cog belt 9 engaged with drive gear 2 reliably, with
Ensure that transmission is accurate, and then ensure that the test to the fatigue behaviour of cog belt 9 is reliable.In order to prevent contact roller 7 from disturbing cog belt 9 to transport
Dynamic, contact roller 7 is rotatably arranged with it can be arranged on by support bar rotates on testing stand 1, can also be arranged on other
In supporting construction.
In the present embodiment, drive gear 2 is driven and rotated by motor, and then drives cog belt 9 to move.Driven using motor
Dynamic mode occupies little space, simple in construction, good reliability.Certainly, in other embodiments, tooth form drive gear 2 can be by
Hydraulic motor or other structures driving rotate, as long as guaranteeing to drive cog belt 9 to move.
Preferably, rotate on testing stand 1 and be connected with two groups of load piston cylinder groups, rotating the reciprocating rotary of testing stand 1
Cog belt 9 can be applied during dynamic and loaded, test its bringing onto load, improve testing efficiency.Each load piston cylinder group bag
Include at least one load piston cylinder 3.Specifically, load piston cylinder 3 is two, and positioned at the both sides for the rotating shaft for rotating testing stand 1.
It is in other embodiments, if a load piston cylinder group includes multiple load piston cylinders 3, multiple load piston cylinders 3 are in parallel,
And it is connected to and rotates on testing stand 1.
In the present embodiment, the connecting tube between the hydraulic fluid port 31 and fuel tank 8 of two load piston cylinders 3 is outlet line, two
Individual load piston cylinder 3 is set correspondingly with overflow valve 4, to control oil extraction pressure respectively.
In order to realize loop test, cog belt fatigue experimental device also includes oil-feed branch road, the oil-feed branch road
One end is connected between the hydraulic fluid port 31 and the overflow valve 4, the other end connection fuel tank 8 of the oil-feed branch road, the oil-feed
It is provided with branch road and controls its break-make to enter oil control valve 6.The specific connected mode of oil-feed branch road is not limited to the side shown in Fig. 1
Method, what deserves to be explained is, the quantity for entering oil control valve 6 should should one with the quantity of load piston cylinder 3 or load piston cylinder group
One correspondence.
Preferably, the oil control valve 6 that enters for controlling oil-feed branch road break-make is check valve.In other embodiments, can utilize
One multiposition valve or multiple-way valve replace a fairly large number of check valve.
As shown in figure 1, in test, drive gear 2 rotates clockwise, then drives cog belt 9 and rotate testing stand 1 together
Rotate clockwise.The piston rod of the load piston cylinder 3 in left side rises in Fig. 1, and vacuum can be produced in cylinder barrel, corresponding unidirectional
Valve is opened, and the pressure medium in fuel tank 8 is entered in cylinder barrel by oil-feed branch road.The work of the load piston cylinder 3 on right side in Fig. 1
Stopper rod is pressurized, and cylinder cylinder pressure rise, corresponding check valve is closed, and pressure medium can only pass through the overflow of overflow valve 4
Oil return box 8, thus it applies resistance to rotating testing stand 1, and then cog belt 9 is applied and loaded, move its band idling.Work as driving
When gear 2 rotates backward, process is thus achieved to cog belt 9 on the contrary, cog belt 9 is still in the state of loaded work piece
Band carries test.
Preferably, the load being applied on cog belt 9 is controlled and adjusts for convenience, overflow valve 4 is proportional pressure control valve 4.
The load being applied on cog belt 9 can be controlled by the oil pressure relief for adjusting proportional pressure control valve 4, the reliable of test is improved with this
Property and convenience.Certainly, overflow valve 4 can be other overflow valves 4, manually adjust oil pressure relief also can, such a overflow valve 4
It is more suitable for carrying out simulation test to the operating mode of no-load change.
In the present embodiment, drive cog belt 9 cyclically to rotate and reverse by drive gear 2 and (just switching to sliding tooth in Fig. 1
Wheel 2 is rotated clockwise to drive cog belt 9 to rotate clockwise, and is reversed to drive gear 2 in Fig. 1 and is rotated counterclockwise to drive tooth form
Band 9 rotates counterclockwise), to drive rotation testing stand 1 cyclically to rotate and reverse, and then control the piston rod of load piston cylinder 3
Cyclically it is pressed into and pulls out cylinder barrel.In this process, can be by controlling cog belt 9 to be circulated in the case of suitable load
Rotate, then detect whether cog belt 9 can reach predetermined cycle-index, to judge whether the fatigue behaviour of cog belt 9 is qualified.
If tested cog belt 9 is broken before the cycle-index for reaching predetermined, judge that its fatigue behaviour is unqualified；It is if tested
Cog belt 9 reaching predetermined cycle-index, then judge that its fatigue behaviour is qualified.
Illustrate herein, the cycle rotation mode of cog belt 9 and rotation testing stand 1 is not limited to the circulation rotating forward of the present embodiment
And reversion, in other embodiments or other rotating manners.For example, rationally design the piston rod of load piston cylinder 3
Connected mode with rotating testing stand 1, the cycle rotation of testing stand 1 (forward or reverse) is rotated to reach the driving of cog belt 9, to control
Piston rod press-in processed pulls out cylinder barrel.
As another embodiment, overflow valve 4 is precursor overflow valve, as shown in Fig. 2 the cog belt fatigue test fills
Putting also includes Regulation Control valve 41, and Regulation Control valve 41 is proportional pressure control valve, and oil inlet and the guide of the proportional pressure control valve are overflow
The remote control mouth connection of valve is flowed, oil-out connects with fuel tank 8.Such a structure goes for the larger operating mode of excess flow, and energy
Enough it is conveniently adjusted oil pressure relief.
By controlling the oil pressure relief of the i.e. controllable precursor overflow valve of the pressure of Regulation Control valve 41, and Regulation Control valve 41
For proportional pressure control valve, then more conveniently regulating and controlling.
Such as：When the piston rod of load piston cylinder 3 is pressed into cylinder barrel, the hydraulic oil in rodless cavity is squeezed out hydraulic fluid port 31,
Hydraulic oil flows to precursor overflow valve, and its small portion hydraulic oil is flowed to for controlling by the leader channel inside precursor overflow valve
The proportional pressure control valve of the oil pressure relief of precursor overflow valve processed.When the pressure of hydraulic oil is relatively low, the proportional pressure control valve is not up to
When setting pressure, the proportional pressure control valve is closed, and precursor overflow valve is closed, and hydraulic oil can not pass through precursor overflow valve stream
To fuel tank 8；When the pressure of hydraulic oil reaches the oil pressure relief of the proportional pressure control valve, the proportional pressure control valve is opened, guide's overflow
Valve is in the conduction state, and hydraulic oil can flow to fuel tank 8 by precursor overflow valve.
The scheme that the precursor overflow valve and proportional pressure control valve coordinate, suitable for load needed for cog belt 9 is larger, hydraulic pressure oil stream
Measure larger cog belt fatigue behaviour experimental provision.
More preferably, the cog belt fatigue experimental device also includes pressure detector 5 and controller (not shown), pressure
Detector 5, which can be arranged on, is used for the pressure for detecting pressure medium in rodless cavity between hydraulic fluid port 31 and overflow valve 4.Pressure detector
5 are electrically connected with the controller, and controller is connected with overflow valve 4, for the pressure signal control ratio fed back according to pressure detector 5
The oil pressure relief of example overflow valve, and then realize that the oil extraction pressure to load piston cylinder 3 is controlled and corrected, cog belt 9 is existed
Rotated under suitable load.Pressure detector 5 is preferably pressure sensor, can be arranged between hydraulic fluid port 31 and overflow valve 4 and connect
Connect on oil circuit, can effectively detect the pressure of hydraulic oil in rodless cavity；Controller can be selected as calculator or single-chip microcomputer
Deng intelligent control device.
More preferably, the cog belt fatigue experimental device also includes radiator 81, and radiator 81 can be arranged on fuel tank 8 with overflowing
Flow on the connecting line between valve 4.When the pressure medium in rodless cavity flows back to fuel tank 8 by overflow valve 4, the pressure medium can
Because being extruded and temperature raises radiator 81 can be set effectively the pressure medium higher to temperature can to cool so that
Returning to the pressure medium of fuel tank 8 has relatively low temperature.
More preferably, the cog belt fatigue experimental device also includes return filter 82, and return filter 82 can be arranged on
Fuel tank 8 is used for oil-feed and fuel-displaced oil circuit, flows to the oil of rodless cavity for filtering oil-feed branch road, and flow to the pressure of fuel tank 8
Medium, to prevent impurity Wear System interior element.
As shown in figure 3, it can realize that cog belt is tired by the flow direction of the setting control pressure medium of two position four-way solenoid valve 61
The test process of labor experimental rig.
Two position four-way solenoid valves 61 are arranged on oil-feed branch road, and control its break-make, and two position four-way solenoid valves 61 have P
Mouth, T mouths, A mouths and B mouths, P mouths are connected with fuel tank 8, and T mouths are connected with fuel tank 8, and A mouths are connected with hydraulic fluid port 31, B mouths and overflow valve 4
Oil-out connects.Two position four-way solenoid valves 61 have left side station and right side station, and during in left side station, P mouths connect with A mouths
Logical, T mouths and B mouths are turned off, the connection of oil-feed branch road；During in right side station, P mouths and A mouths are turned off, and T mouths connect with B mouths, enter
Oily branch road blocks.
When drive gear 2 turns clockwise, the O points of cog belt 9 and rotation testing stand 1 around the shaft rotate.
Now, the piston rod of the load piston cylinder 3 in left side rises in Fig. 3, two four energizations in left side in Fig. 3
Magnet valve 61 is in left side station, and oil-feed branch road is opened, pressure medium from fuel tank 8 by return filter 82, by left side
Two position four-way solenoid valves 61 P mouths and A mouths flow into cylinder barrel in.
The piston rod of the load piston cylinder 3 on right side is pressurized in Fig. 3, two position four-way solenoid valves on right side in Fig. 3
61 are in right side station in Fig. 3, and oil return branch road is opened, the B mouths that pressure medium passes through two position four-way solenoid valves 61 in right side
Enter radiator 81 and return filter 82, final overflow oil return box 8 with T mouths.
Conversely, when 2 rotate counterclockwise of drive gear, the O points of cog belt 9 and rotation testing stand 1 around the shaft rotate.
Now, the piston rod of the load piston cylinder 3 in left side is pressurized in Fig. 3, two four energizations in left side in Fig. 3
Magnet valve 61 is in right side station, and oil return branch road is opened, and pressure medium passes through radiator 81 and the overflow oil return box 8 of return filter 82
It is interior.
The piston rod of the load piston cylinder 3 on right side rises in Fig. 3, two position four-way solenoid valves on right side in Fig. 3
61 are in left side station in Fig. 3, and oil-feed branch road is opened, and pressure medium is flowed into cylinder barrel from fuel tank 8 by return filter 82.
Embodiments of the invention cog belt fatigue experimental device has the effect that：
Cog belt is loaded by overflow valve and the control of load piston cylinder, the actual loading of cog belt, and side can be simulated
Convenient to operate, control are accurate；
Because to cog belt loading hydraulic system structure it is compact, test convenient disassembly, and loading force can as needed with
When adjust, therefore can efficiently and accurately to cog belt carry out testing fatigue；
The cog belt fatigue experimental device has the advantages of compact-sized, easy to use, while can effectively test out
The fatigue behaviour of cog belt.
More than, it is only embodiment of the invention, but protection scope of the present invention is not limited thereto, and it is any to be familiar with
Those skilled in the art the invention discloses technical scope in, change or replacement can be readily occurred in, should all be covered
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)
- A kind of 1. cog belt fatigue experimental device, it is characterised in that including：Testing stand (1) is rotated, the both ends of tested cog belt (9) are fixedly installed on the rotation testing stand (1) and described Cog belt (9) is tensioned；Drive gear (2), it engages with the cog belt (9) and the cog belt (9) can be driven to rotate；Load piston cylinder (3), it includes piston rod and cylinder barrel, and the telescopic end of the piston rod is connected to the rotation testing stand (1) on, and the piston rod is moved by the driving of the rotation testing stand (1), is provided with the cylinder barrel and is connected with rodless cavity Logical hydraulic fluid port (31), the hydraulic fluid port (31) are connected by connecting tube with fuel tank (8)；Overflow valve (4), it is arranged between the hydraulic fluid port (31) and the fuel tank (8), and controls the oil extraction pressure of the rodless cavity Power.
- 2. cog belt fatigue experimental device according to claim 1, it is characterised in that the overflow valve (4) is overflow for ratio Flow valve.
- 3. cog belt fatigue experimental device according to claim 1, it is characterised in that the overflow valve (4) is overflow for guide Valve is flowed, the cog belt fatigue experimental device also includes Regulation Control valve (41), and the Regulation Control valve (41) is proportional overflow Valve, the oil inlet of the proportional pressure control valve are connected with the remote control mouth of the precursor overflow valve, the oil-out of the proportional pressure control valve Connected with the fuel tank (8).
- 4. the cog belt fatigue experimental device according to Claims 2 or 3, it is characterised in that the cog belt fatigue test Device also includes pressure detector (5) and controller, and the pressure detector (5) is arranged on the hydraulic fluid port (31) and the overflow Between valve (4), and electrically connected with the controller, the controller is connected with the overflow valve (4), and is examined according to the pressure Survey proportional pressure control valve described in the detection Stress control of device (5) feedback.
- 5. cog belt fatigue experimental device according to any one of claim 1 to 3, it is characterised in that the cog belt Fatigue experimental device also includes oil-feed branch road, and one end of the oil-feed branch road is connected to the hydraulic fluid port (31) and the overflow valve (4) between, the other end of the oil-feed branch road connects the fuel tank (8), is provided with the oil-feed branch road and controls its break-make Enter oil control valve (6).
- 6. cog belt fatigue experimental device according to claim 5, it is characterised in that it is described enter oil control valve (6) be single To valve.
- 7. cog belt fatigue experimental device according to any one of claim 1 to 3, it is characterised in that the cog belt Fatigue experimental device also includes oil-feed branch road, and one end of the oil-feed branch road is connected to the hydraulic fluid port (31) and the overflow valve (4) between, the other end of the oil-feed branch road connects the fuel tank (8), is provided with the oil-feed branch road and controls its break-make Two position four-way solenoid valves (61), two position four-way solenoid valve (61) have P mouths, T mouths, A mouths and B mouths, the P mouths and the oil Case (8) is connected, and the T mouths are connected with the fuel tank (8), and the A mouths are connected with the hydraulic fluid port (31), and the B mouths overflow with described Flow the oil-out connection of valve (4)；Two position four-way solenoid valve (61) has left side station and right side station,During in the left side station, the P mouths are connected with the A mouths, and the T mouths and the B mouths are turned off, the oil-feed branch Road connects；During in the right side station, the P mouths and the A mouths are turned off, and the T mouths connect with the B mouths, the oil-feed branch Road is blocked.
- 8. cog belt fatigue experimental device according to claim 1, it is characterised in that the cog belt fatigue experimental device Also include contact roller (7), the contact roller (7) is pressed on the cog belt (9), and the contact roller (7) and the driving Gear (2) is located at the both sides of the cog belt (9).
- 9. cog belt fatigue experimental device according to claim 1, it is characterised in that the cog belt fatigue experimental device Including two load piston cylinder groups, each load piston cylinder group includes at least one load piston cylinder (3), two institutes The both sides that load piston cylinder group is located at the rotating shaft of the rotation testing stand (1) with the link position for rotating testing stand (1) are stated, The overflow valve (4) is at least two, and is corresponded with the load piston cylinder group.
- 10. cog belt fatigue experimental device according to claim 1, it is characterised in that the cog belt fatigue test dress Putting also includes radiator (81), and the radiator (81) is arranged between the fuel tank (8) and the overflow valve (4).
- 11. cog belt fatigue experimental device according to claim 1, it is characterised in that the rotation testing stand (1) is fan Shape disk, the cog belt (9) are arranged on the arc surface of the sector disk.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510921178.4A CN105403406B (en) | 2015-12-11 | 2015-12-11 | toothed belt fatigue test device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510921178.4A CN105403406B (en) | 2015-12-11 | 2015-12-11 | toothed belt fatigue test device |
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| CN105403406A CN105403406A (en) | 2016-03-16 |
| CN105403406B true CN105403406B (en) | 2018-01-05 |
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| CN201510921178.4A Active CN105403406B (en) | 2015-12-11 | 2015-12-11 | toothed belt fatigue test device |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107063652A (en) * | 2016-12-26 | 2017-08-18 | 安徽杰曼汽车零部件有限公司 | A kind of unidirectional valve opening pressure quick detection testing stand |
| 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 |
| CN108709741B (en) * | 2018-08-23 | 2023-12-26 | 无锡市宝业机械制造有限公司 | Special fatigue testing machine for toothed 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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