CN206338263U - A kind of rigid material fatigue test hydraulic loading device - Google Patents
A kind of rigid material fatigue test hydraulic loading device Download PDFInfo
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- CN206338263U CN206338263U CN201621349775.0U CN201621349775U CN206338263U CN 206338263 U CN206338263 U CN 206338263U CN 201621349775 U CN201621349775 U CN 201621349775U CN 206338263 U CN206338263 U CN 206338263U
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- plunger pump
- valve
- oil cylinder
- pumping plant
- oil
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Abstract
The utility model is related to a kind of rigid material fatigue test hydraulic loading device, including clamping pumping plant, load pumping plant, hand-operated direction valve, oil cylinder, piece fixture and fuel reserve tank, described fixture I is fixedly installed on support, described fixture II is connected with the piston rod on oil cylinder, described clamping pumping plant is connected by hand-operated direction valve with oil path in oil cylinder, described eccentric wheel and cam are respectively fixedly installed on the same axle being connected with motor, described plunger pump I and plunger pump II drive with eccentric wheel respectively to be connected, described reversal valve is connected with cam driven, described plunger pump I and plunger pump II are connected by check valve and reversal valve with oil path in oil cylinder respectively, described plunger pump I and plunger pump II are connected by check valve with fuel reserve tank oil circuit respectively.The utility model uses the cam control reversal valve coaxial with the plunger pump of loading to carry out the switching of hydraulic system oil circuit and can circulate to applying pulling force and pressure by test material, and functional reliability is very high.
Description
Technical field
The utility model is related to a kind of engineering material test technical field, particularly a kind of rigid material fatigue test hydraulic pressure
Loading device.
Background technology
, it is necessary to be stretched, reversed to the metal materials such as steel and its product in engineering material test technical field
The fatigue test repeated loading that " draw --- pressure " or " just --- anti-" direction is reversed etc., it is necessary to being applied by test material, and
And this repeated loading of application will continue for some time and reach very high cycle-index, and this loading is realized with hydraulic system
Function is a kind of more satisfactory technical scheme.However, using the hydraulic circuit of existing hydraulic system and solenoid valve control come
Realize, not only system complex, magnetic valve in the work of long-time iterative cycles easy break-down and influence the reliability of system, power
Larger hydraulic power unit is also very low in small-power pulsating cyclic work under load efficiency for a long time.
Utility model content
The technical problems to be solved in the utility model is：A kind of can conveniently circulate is provided and applies pressure to rigid material
Rigid material fatigue test hydraulic loading device.
Solving the technical scheme of above-mentioned technical problem is：A kind of rigid material fatigue test hydraulic loading device, including dress
Pumping plant, loading pumping plant, hand-operated direction valve, oil cylinder, piece fixture and fuel reserve tank are pressed from both sides, described piece fixture includes fixture I and folder
Tool II, described fixture I is fixedly installed on support, and described fixture II is connected with the piston rod on oil cylinder, described clamping
Pumping plant is connected by hand-operated direction valve with oil path in oil cylinder, and described loading pumping plant includes plunger pump I, plunger pump II, eccentric wheel, convex
Wheel and reversal valve, described eccentric wheel and cam are respectively fixedly installed on the same axle being connected with motor, described post
Plug pump I and plunger pump II drive with eccentric wheel be connected and be located at respectively eccentric wheel both sides, described reversal valve and cam respectively
Connection is driven, described plunger pump I and plunger pump II are connected by check valve and reversal valve with oil path in oil cylinder respectively, described
Plunger pump I and plunger pump II are connected by check valve with fuel reserve tank oil circuit respectively, described oil cylinder by hand-operated direction valve with
Fuel reserve tank oil circuit is connected.
Further technical scheme of the present utility model is：The plunger pump I and plunger pump II pass through overflow valve and oil storage
Case oil circuit is connected.
Described clamping pumping plant outlet is connected by check valve with hand-operated direction valve oil circuit.
Described reversal valve is connected by one-way throttle valve, counterbalance valve and fuel reserve tank oil circuit.
Also include accumulator, described reversal valve is connected by one-way throttle valve with accumulator.
Due to using above-mentioned technical proposal, a kind of rigid material fatigue test hydraulic loading device of the utility model, tool
There is following beneficial effect：
1. the reversal valve controlled using cam replaces solenoid directional control valve, the reliability of work is greatly improved：
Fatigue test is carried out to metal material and its product test specimen, it is necessary to apply positive and negative direction circulation to by test material
Load, and this positive and negative direction cyclic loading of application will continue for some time and reach very high cycle-index, use hydraulic pressure system
System as during loading device, it is necessary to reversal valve frequent switching, if using traditional solenoid directional control valve, Electromagnetically-operating therein
Mechanism is easy to occur damaging because generating heat and wearing and tearing.The utility model is controlled by loading pumping plant to oil cylinder and can followed
Ring by test material to applying pulling force and pressure, and loading pumping plant includes plunger pump I, plunger pump II, eccentric wheel, cam and commutation
Valve, carries out hydraulic system oil circuit switching, functional reliability is very using the cam control reversal valve coaxial with the plunger pump of loading
It is high.
2. imposed load values constant and easy to adjust, added impact load is low：
The utility model replaces mechanical mechanism with hydraulic system as the loading equipemtn of fatigue test of materials, by adjusting liquid
The setting valve of pressure system overflow valve can easily obtain corresponding loading load value, and can keep loading load value
It is stable, it can eliminate or mitigate the generation of added impact load.
3. low cost, efficiency high, operating cost are low：
Because the utility model is provided with clamping pumping plant, loading pumping plant simultaneously, the larger clamping pumping plant of power is only in test specimen
Clamping and adjusting stage use, relatively low, the cheap pump class of operating pressure such as usable gear pump, vane pump, and load pump
Smaller, the simple in construction plunger pump of usable discharge capacity of standing, therefore cost is relatively low, simultaneously because the discharge capacity of load pump is smaller, is equipped with
Motor power (output) it is also small, therefore mechanical efficiency is high, and operating cost is also low.
Below, with reference to a kind of rigid material fatigue test hydraulic pressure of Figure of description and specific embodiment to the utility model
The technical characteristic of loading device is further described.
Brief description of the drawings
Fig. 1：A kind of structural representation of the rigid material fatigue test hydraulic loading device of the utility model.
In above-mentioned accompanying drawing, each label declaration is as follows：
1- hand-operated direction valves, 2- fuel reserve tanks, 3- clamping pumping plants, 4- loading pumping plants, 401- check valves III, 402- check valves I,
403- plunger pumps I, 404- eccentric wheels, 405- bearing blocks I, 406- shaft couplings, 407- plunger pumps II, 408- check valves IV, 409-
Check valve II, 410- overflow valves, 411- bearing blocks II, 412- pump shafts, 413- cams, 414- reversal valves, 5- counterbalance valves, 6- is unidirectional
Choke valve, 7- accumulators, 8- oil cylinders, 9- fixtures II, 10- test specimens, 11- fixtures I.
Embodiment
A kind of rigid material fatigue test hydraulic loading device, including clamping pumping plant 3, loading pumping plant 4, hand-operated direction valve 1,
Oil cylinder 8, piece fixture, accumulator 7 and fuel reserve tank 2（Fuel reserve tank 2 is same fuel reserve tank 2 in Fig. 1, is intended merely to convenient sight
See and be just drawn on different parts）, described piece fixture includes fixture I 11 and fixture II 9, and described fixture I 11, which is fixed, to be set
It is placed on support, described fixture II 9 is connected with the piston rod on oil cylinder 8, the cylinder body of the oil cylinder 8 is also secured on support.
Described loading pumping plant 4 includes plunger pump I 403, plunger pump II 407, eccentric wheel 404, cam 413 and reversal valve 414, described
Eccentric wheel 404 and cam 413 are respectively fixedly installed on the same axle being connected with motor, described plunger pump I 403 and post
Plug pump II 407 drives with eccentric wheel 404 be connected and respectively positioned at the both sides of eccentric wheel 404 respectively, described reversal valve 414 with it is convex
Wheel 413 drives connection, and described plunger pump I 403 and plunger pump II 407 pass through check valve and reversal valve 414 and oil cylinder 8 respectively
Oil circuit is connected, meanwhile, unnecessary oil spill goes out for convenience, is connected in plunger pump I 403 and plunger pump II 407 with reversal valve 414
One branch road is set again on oil circuit so that plunger pump I 403 and plunger pump II 407 are connected with the oil circuit of fuel reserve tank 2, i.e., described plunger
Pump I 403 and plunger pump II 407 are connected by overflow valve 410 with the oil circuit of fuel reserve tank 2.Oil suction for convenience, described plunger pump
I 403 and plunger pump II 407 be connected respectively by oil sucting one-way valve 401,408 with the oil circuit of fuel reserve tank 2.Described clamping pumping plant 3 leads to
Cross hand-operated direction valve 1 to be connected with the oil circuit of oil cylinder 8, described clamping pumping plant 3 can be gear pump or vane pump, pass through filter and storage
The oil circuit of fuel tank 2 is connected, and described gear pump or vane pump is connected by check valve with the oil circuit of hand-operated direction valve 1.Described oil cylinder 8
It is connected by hand-operated direction valve 1 with the oil circuit of fuel reserve tank 2.Described reversal valve 414 passes through one-way throttle valve 6, counterbalance valve 5 and oil storage
The oil circuit of case 2 is connected.Described reversal valve 414 is connected by one-way throttle valve 6 with the oil circuit of accumulator 7.Described one-way throttle valve 6
Effect be limit the piston of oil cylinder 8 test specimen restoring force effect under translational speed, it is to avoid or mitigate impact load generation.Institute
The effect for the counterbalance valve 5 stated is the reversing impact for avoiding hydraulic jack 8, while ensureing that accumulator 7 has certain pressure oil storage.
The effect of overflow valve 410 is set to be to maintain the stabilization of hydraulic system working pressure in loading pumping plant 4, by adjusting the overflow valve
410 setting value obtains test specimen and loads the maximum of load, and ensures the uniformity of peak load.
It is used as one kind conversion of the present embodiment：Loading pumping plant 4 is duplex plunger pump, and cam 413 is also single cycle stroke, according to
It is actually needed, plunger pump number can be set to N number of（N is 2-16）, the roundtrips number of cam 413 can be set to N/2.
It is used as one kind conversion of the present embodiment：If making oil cylinder 8 into oscillating oil cylinder 8, the torsion of test specimen can also be carried out
Fatigue test.
Operation principle：
During clamping adjustment, start clamping pumping plant 3, manipulate the piston rod position of the adjustment oil cylinder 8 of hand-operated direction valve 1 extremely
It is adapted to the position of test specimen clamping, stops the work of clamping pumping plant 3 after test specimen clamping is completed and carries out pretension；By hand-operated direction valve
1 is placed in middle position, and start-up loading pumping plant 4 starts load test, loads the fixation of eccentric wheel 404 and cam 413 in pumping plant 4 and all pacifies
It is convex during I 403 oil extraction of plunger pump when motor drives pump shaft 412 to rotate by shaft coupling 406 on same pump shaft 412
Wheel 413 controls reversal valve 414 in upper work（Location status shown in Figure 1）, the hydraulic oil in plunger pump I 403 passes through list
To valve（That is check valve I 402）, reversal valve 414 enter oil cylinder 8 left chamber, drive oil cylinder 8 piston rod（Together with fixture II 9）To
Move right and pulling force is applied to test specimen 10；Now, plunger pump II 407 is in oil suction, and hydraulic oil passes through check valve by fuel reserve tank 2（I.e.
Check valve IV 408）Into in the pump housing of plunger pump II 407.When II 407 oil extraction of plunger pump, the control reversal valve 414 of cam 413
Hydraulic oil in bottom work, plunger pump II 407 passes through check valve（That is check valve II 409）, reversal valve 414 enter oil cylinder 8
Right chamber, drive oil cylinder 8 piston rod（Together with fixture II 9）It is moved to the left and pressure is applied to test specimen 10；Now, plunger pump I
403 pass through check valve in oil suction, hydraulic oil by fuel reserve tank 2（That is check valve III 401）Into in the pump housing of plunger pump I 403.Commutation
When valve 414 is switched between upper and lower by middle position, the left and right chamber connection of oil cylinder 8, the band in the presence of test specimen elastic restoring force
The micro movement of piston reverses direction of dynamic oil cylinder 8, due to the area discrepancy of the left and right chamber of oil cylinder 8, set accumulator 7 can supplement or
Deficiency or the surplus of the left and right chamber hydraulic oil of the piston of oil cylinder 8 are absorbed, makes freely the stretching after unloading of test specimen 10.
Claims (5)
1. a kind of rigid material fatigue test hydraulic loading device, it is characterised in that：Including clamping pumping plant（3）, loading pumping plant
（4）, hand-operated direction valve（1）, oil cylinder（8）, piece fixture and fuel reserve tank（2）, described piece fixture includes fixture I（11）And folder
Tool II（9）, described fixture I（11）It is fixedly installed on support, described fixture II（9）With oil cylinder（8）On piston rod connect
Connect, described clamping pumping plant（3）Pass through hand-operated direction valve（1）With oil cylinder（8）Oil circuit is connected, described loading pumping plant（4）Including
Plunger pump I（403）, plunger pump II（407）, eccentric wheel（404）, cam（413）And reversal valve（414）, described eccentric wheel
（404）And cam（413）Respectively it is fixedly installed on the same axle being connected with motor, described plunger pump I（403）And post
Fill in pump II（407）Respectively and eccentric wheel（404）Drive connection and be located at eccentric wheel respectively（404）Both sides, described reversal valve
（414）With cam（413）Drive connection, described plunger pump I（403）With plunger pump II（407）Respectively by check valve and
Reversal valve（414）With oil cylinder（8）Oil circuit is connected, described plunger pump I（403）With plunger pump II（407）Pass through check valve respectively
And fuel reserve tank（2）Oil circuit is connected, described oil cylinder（8）Pass through hand-operated direction valve（1）With fuel reserve tank（2）Oil circuit is connected.
2. a kind of rigid material fatigue test hydraulic loading device according to claim 1, it is characterised in that：The plunger
Pump I（403）With plunger pump II（407）Pass through overflow valve（410）With fuel reserve tank（2）Oil circuit is connected.
3. a kind of rigid material fatigue test hydraulic loading device according to claim 1, it is characterised in that：Described dress
Press from both sides pumping plant（3）Outlet passes through check valve and hand-operated direction valve（1）Oil circuit is connected.
4. a kind of rigid material fatigue test hydraulic loading device according to claim 1, it is characterised in that：Described changes
To valve（414）Pass through one-way throttle valve（6）, counterbalance valve（5）With fuel reserve tank（2）Oil circuit is connected.
5. a kind of rigid material fatigue test hydraulic loading device according to claim 1, it is characterised in that：Also include storage
Can device（7）, described reversal valve（414）Pass through one-way throttle valve（6）With accumulator（7）Connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621349775.0U CN206338263U (en) | 2016-12-09 | 2016-12-09 | A kind of rigid material fatigue test hydraulic loading device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621349775.0U CN206338263U (en) | 2016-12-09 | 2016-12-09 | A kind of rigid material fatigue test hydraulic loading device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206338263U true CN206338263U (en) | 2017-07-18 |
Family
ID=59307580
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621349775.0U Withdrawn - After Issue CN206338263U (en) | 2016-12-09 | 2016-12-09 | A kind of rigid material fatigue test hydraulic loading device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206338263U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106593970A (en) * | 2016-12-09 | 2017-04-26 | 柳州职业技术学院 | Fatigue test hydraulic loading device for rigid material |
-
2016
- 2016-12-09 CN CN201621349775.0U patent/CN206338263U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106593970A (en) * | 2016-12-09 | 2017-04-26 | 柳州职业技术学院 | Fatigue test hydraulic loading device for rigid material |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20170718 Effective date of abandoning: 20180511 |