CN103967869A - Hydraulic cylinder loading detecting device - Google Patents
Hydraulic cylinder loading detecting device Download PDFInfo
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- CN103967869A CN103967869A CN201410195778.2A CN201410195778A CN103967869A CN 103967869 A CN103967869 A CN 103967869A CN 201410195778 A CN201410195778 A CN 201410195778A CN 103967869 A CN103967869 A CN 103967869A
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Abstract
The invention discloses a hydraulic cylinder loading detecting device which comprises a first oil pump, a second oil pump, a pressurizing cylinder, a reversing valve, a first connector used for being connected with a first hydraulic cylinder and a second connector used for being connected with a second hydraulic cylinder. A first cavity of the pressurizing cylinder is connected with the first oil pump which provides oil for the pressurizing cylinder through the reversing valve and is connected with the second connector which provides oil for the pressurizing cylinder at the same time. A second cavity of the pressurizing cylinder is connected with the first connector and is used for providing oil for the first connector. The second connector is connected with the second oil pump which provides oil for the second connector. The pressurizing cylinder can output driving pressure oil with pressure higher than oil source pressure, the problem that an oil source is at a high-pressure working state can be avoided, and oil source service life is prolonged. In addition, energy recycling and reusing can be achieved, system installing power is lowered, system heating is low, and cooling power can be saved.
Description
Technical field
The present invention relates generally to oil hydraulic cylinder Test And Check Technology field, specifically, relates to a kind of oil hydraulic cylinder and loads detection device.
Background technique
Oil hydraulic cylinder is the executive component of hydraulic system, for driving various operation mechanisms, is the critical component in engineering goods, and its performance quality has greatly affected the quality of complete machine.One of effective means of checking oil hydraulic cylinder performance is by related standards, to load detection on special-purpose test stand.
According to standard GB/T/T15622-2005, in type approval test, most important project is to carry out total travel Load test 200,000 times, and this just means a set of hydraulic system that can under high pressure work for a long time of needs, and needs to consume a large amount of electric energy.The test stand of prior art, adopts oil pump directly to tested oil hydraulic cylinder fuel feeding conventionally, and oil pump long-term work is at high pressure conditions, and rate of fault is high, and test pressure is still not high enough.
The power of tested oil hydraulic cylinder output is a very large to-and-fro motion power, conventionally only have with another one oil hydraulic cylinder and just can receive such energy, be after inversion is hydraulic energy, with relief valve, be converted to heat energy again, not only cannot recycle, also can make oil temperature raise, thereby have to be equipped with larger cooling system.
Therefore, how to provide a kind of oil hydraulic cylinder to load detection device, improve on-load pressure, and can recycle energy under the limited prerequisite of pressure fuel pump, saving power consumption, is those skilled in the art's technical problems urgently to be resolved hurrily.
Summary of the invention
In view of this, the object of the present invention is to provide a kind of oil hydraulic cylinder to load detection device, can solve that in prior art, operation of oil pump pressure is large, energy cannot be recycled, system is generated heat large defect or at least one of them.
Oil hydraulic cylinder of the present invention loads detection device, comprises the first oil pump, the second oil pump, pressurized cylinder, selector valve, the first interface for being connected with the first oil hydraulic cylinder, the second interface for being connected with the second oil hydraulic cylinder, wherein:
The first chamber of described pressurized cylinder connects described the first oil pump to its fuel feeding by described selector valve, also connects described the second interface to its fuel feeding simultaneously;
The second chamber of described pressurized cylinder connects described first interface, for to described first interface fuel feeding;
Described the second interface connects described the second oil pump to its fuel feeding.
Further, the quantity of described pressurized cylinder is one, and the quantity of described first interface is one, and the quantity of described the second interface is one.
Further, the quantity of described pressurized cylinder is two, is respectively the first pressurized cylinder and the second pressurized cylinder;
The quantity of described first interface is two, is respectively A1 mouth and B1 mouth;
The quantity of described the second interface is two, is respectively A2 mouth and B2 mouth;
The first chamber of described the first pressurized cylinder connects selector valve and A2 mouth, and the second chamber of described the first pressurized cylinder connects A1 mouth;
The first chamber of described the second pressurized cylinder connects selector valve and B2 mouth, and the second chamber of described the second pressurized cylinder connects B1 mouth;
Described the second oil pump connects respectively described A1 mouth, B1 mouth, A2 mouth and B2 mouth.
Further, this device also comprises one or several in the first one-way valve, the second one-way valve, the 3rd one-way valve and the 4th one-way valve, wherein:
Described the first one-way valve is connected between described the second oil pump and A1 mouth, and its filler opening connects described the second oil pump;
Described the second one-way valve is connected between described the second oil pump and B1 mouth, and its filler opening connects described the second oil pump;
Described the 3rd one-way valve is connected between described the second oil pump and A2 mouth, and its filler opening connects described the second oil pump;
Described the 4th one-way valve is connected between described the second oil pump and B2 mouth, and its filler opening connects described the second oil pump.
Further, described selector valve is the three-position four-way valve that comprises P mouth, T mouth, A mouth and B mouth, and described A mouth connects the first chamber of the first pressurized cylinder, and described B mouth connects the first chamber of the second pressurized cylinder, and described P mouth connects described the first oil pump, and described T mouth connects fuel tank.
Further, between described A2 mouth and the first chamber of described the first pressurized cylinder, be provided with the first sequence valve, and/or, between described B2 mouth and the first chamber of described the second pressurized cylinder, be provided with the second sequence valve.
Further, this device also comprises the 3rd sequence valve, the 5th one-way valve and the 6th one-way valve, the filler opening of described the 5th one-way valve connects described A2 mouth, the filler opening of described the 6th one-way valve connects described B2 mouth, the oil outlet of the oil outlet of described the 5th one-way valve and the 6th one-way valve is connected to form the first oil circuit, the filler opening of described the 3rd sequence valve is connected on described the first oil circuit, and the oil outlet of described the 3rd sequence valve is connected on the oil-feed oil circuit of described selector valve.
Further, between described the first oil pump and fuel tank, be provided with the first electric proportional pressure control valve, and/or, between described the second oil pump and fuel tank, be provided with the second electric proportional pressure control valve.
Further, this device also comprises the position switch for detection of the first oil hydraulic cylinder or the second hydraulic cylinder travel, and described position switch is connected by controller with described selector valve.
Further, the first chamber of described pressurized cylinder is rodless cavity, and the second chamber of described pressurized cylinder is rod chamber.
Oil hydraulic cylinder of the present invention loads detection device, can carry out load test to the first oil hydraulic cylinder, also can to the first oil hydraulic cylinder and the second oil hydraulic cylinder, carry out load test, the first oil pump and the second oil hydraulic cylinder can be simultaneously to the first chamber fuel feeding of pressurized cylinder simultaneously, and the second chamber of pressurized cylinder is to the first oil hydraulic cylinder fuel feeding.
Because this pressurized cylinder can carry out supercharging to entering the pressure oil of the first oil hydraulic cylinder, thereby the exportable driving pressure higher than oil supply pressure oil, and then guarantee to load the carrying out that detects test.The present invention can avoid oil sources in high-pressure work state, thereby can improve the oil sources life-span.
The hydraulic oil that the present invention's the second oil hydraulic cylinder flows out flows in the first chamber of pressurized cylinder, the hydraulic oil that the first oil hydraulic cylinder flows out flows in the second chamber of pressurized cylinder, thereby energy is reclaimed and is recycled, power save mode science, effective, and system loss is little, and heating is few, can reduce system installed power, save system cools power, reduce fatigue loading operating cost.
Accompanying drawing explanation
The accompanying drawing that forms a part of the present invention is used to provide a further understanding of the present invention, and schematic description and description of the present invention is used for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the hydraulic schematic diagram that the oil hydraulic cylinder of first embodiment of the invention loads detection device;
Fig. 2 is the phase diagram when detecting embodiment illustrated in fig. 1;
Fig. 3 is that the oil hydraulic cylinder of second embodiment of the invention loads the phase diagram of detection device when detecting.
Description of reference numerals:
The first oil pump-11 the second oil pump-12
The first pressurized cylinder-21 the second pressurized cylinder-22
Selector valve-3 the first oil hydraulic cylinder-41
The second oil hydraulic cylinder-42 the first one-way valve-51
The second one-way valve-52 the 3rd one-way valve-53
The 4th one-way valve-54 the 5th one-way valve-55
The 6th one-way valve-56 the first sequence valve-61
The second sequence valve-62 the 3rd sequence valve-63
The first electric proportional pressure control valve-72 of electric proportional pressure control valve-71 second
Frock-9, position switch-8
Embodiment
It should be noted that, in the situation that not conflicting, embodiment and the feature in embodiment in the present invention can combine mutually.Describe below with reference to the accompanying drawings and in conjunction with the embodiments the present invention in detail.
In the present invention, term " first ", " second ", " the 3rd ", " the 4th ", " the 5th ", " the 6th " are mainly used in distinguishing different parts, but parts are not specifically limited.
It shown in Fig. 1, is the hydraulic schematic diagram of the oil hydraulic cylinder loading detection device of first embodiment of the invention.This embodiment's oil hydraulic cylinder deceleration loading device at least comprises the first oil pump 11, the second oil pump 12, pressurized cylinder, selector valve 3, first interface and the second interface, for oil hydraulic cylinder is loaded, detects test.
When testing, two oil hydraulic cylinders (being respectively the first oil hydraulic cylinder 41 shown in Fig. 2 and the second oil hydraulic cylinder 42) need to be arranged on this device.Wherein, first interface is for being connected with the first oil hydraulic cylinder 41, and the second interface is for being connected with the second oil hydraulic cylinder 42.This device can carry out load test to the first oil hydraulic cylinder 41, also can to the first oil hydraulic cylinder 41 and the second oil hydraulic cylinder 42, carry out load test, so that detect its leakage situation, shock-absorbing capacity, weldquality etc. simultaneously.
Fig. 2 is the phase diagram when detecting embodiment illustrated in fig. 1.After installation, the piston rod of the first oil hydraulic cylinder 41 and the second oil hydraulic cylinder 42 interconnects, and preferably their dead in line.For the ease of installing, also the first oil hydraulic cylinder 41 and the second oil hydraulic cylinder 42 can be arranged in special-purpose frock 9.
It should be noted that, oil hydraulic cylinder of the present invention loads detection device both can be for detection of one-way cylinder, also can be for detection of two-way cylinder, and the present invention is not limited to this.When detecting one-way cylinder, the quantity of first interface and the second interface is respectively one; When detecting two-way cylinder, the quantity of first interface and the second interface is respectively two.
The first oil pump 11 that the first chamber of pressurized cylinder connects to its fuel feeding by selector valve 3 also connects the second interface to its fuel feeding simultaneously; The second chamber of pressurized cylinder connects first interface, for to first interface fuel feeding.During the first chamber oil-feed of pressurized cylinder, the hydraulic oil in the second oil hydraulic cylinder 42 flows in the first chamber of pressurized cylinder after the second interface, and now the first oil pump 11 is also to fuel feeding in this first chamber.Preferably the first oil pump 11 is variable displacement pump, the repairing amount in adjustable pressurized cylinder the first chamber, and then the motion speed of control the first oil hydraulic cylinder 41.
Meanwhile, the second chamber of pressurized cylinder is fuel-displaced to first interface, and finally flows in the first oil hydraulic cylinder 41.The hydraulic oil that flows to the first oil hydraulic cylinder 41 from first interface can apply hydraulic loaded power to the first oil hydraulic cylinder 41, and by interconnective piston rod, this hydraulic loaded power also can be passed to the second oil hydraulic cylinder 42.
Aforementioned the second interface connects the second oil pump 12 to its fuel feeding, and when the second oil hydraulic cylinder 42 needs oil-feed, the second oil pump 12 passes through the second interface to the second oil hydraulic cylinder 42 fuel feeding.Should be understood that, preferably this second oil pump 12 also connects first interface, and it is variable displacement pump, adjustable the first oil hydraulic cylinder 41 repairing amounts.In addition, this second oil pump 12 also can connect the second chamber of pressurized cylinder, for regulating the second chamber repairing amount.
On the basis of aforementioned techniques scheme, the first oil pump 11 and the second oil hydraulic cylinder 42 can be simultaneously to the first chamber fuel feeding of pressurized cylinder, and the second chamber of pressurized cylinder is to the first oil hydraulic cylinder 41 fuel feeding.Because this pressurized cylinder can carry out supercharging to entering the pressure oil of the first oil hydraulic cylinder 41, thereby the exportable driving pressure higher than oil supply pressure oil, and then guarantee to load the carrying out that detects test.This embodiment can avoid oil sources (the first oil pump 11) in high-pressure work state, improves the oil sources life-span.
In addition, the hydraulic oil that the second oil hydraulic cylinder 42 flows out flows in the first chamber of pressurized cylinder, the hydraulic oil that the first oil hydraulic cylinder 41 flows out flows in the second chamber of pressurized cylinder, thereby energy reclaimed and recycle, power save mode science, effective, and system loss is little, heating is few, can reduce system installed power, save system cools power, reduces fatigue loading operating cost.
Preferably, the first chamber of pressurized cylinder is rodless cavity, and the second chamber of pressurized cylinder is rod chamber, can strengthen the hydraulic fluid pressure that enters the first oil hydraulic cylinder 41, improves the loading performance of device integral body.
Aforementionedly illustrate, the present invention can carry out load test to one-way cylinder, and correspondingly the quantity of first interface and the second interface is respectively one.In addition, the quantity of pressurized cylinder is also one (this pressurized cylinder is two-way cylinder).Before the fuel-displaced state of the first oil hydraulic cylinder 41 oil-feeds, the second oil hydraulic cylinder 42, illustrate.When selector valve 3 commutation, the first oil hydraulic cylinder 41 is fuel-displaced, the second oil hydraulic cylinder 42 oil-feeds.Now, the second oil pump 12 is to the second oil hydraulic cylinder 42 fuel feeding, the hydraulic oil of the first oil hydraulic cylinder 41 flows to the second chamber of pressurized cylinder, the second chamber repairing that simultaneously the second oil pump 12 preferably also can be to pressurized cylinder, the hydraulic oil in pressurized cylinder the first chamber by selector valve 3 oil returns to fuel tank.
Except one-way cylinder, the present invention is more preferably used in the load test of two-way cylinder, and correspondingly the quantity of pressurized cylinder is two, is respectively the first pressurized cylinder 21 shown in Fig. 1 and the second pressurized cylinder 22; The quantity of first interface is two, is respectively A1 mouth and B1 mouth; The quantity of the second interface is two, is respectively A2 mouth and B2 mouth; The first chamber of the first pressurized cylinder 21 connects selector valve 3 and A2 mouth, and the second chamber of the first pressurized cylinder 21 connects A1 mouth; The first chamber of the second pressurized cylinder 22 connects selector valve 3 and B2 mouth, and the second chamber of the second pressurized cylinder 22 connects B1 mouth; The second oil pump 12 connects respectively A1 mouth, B1 mouth, A2 mouth and B2 mouth.When the first oil hydraulic cylinder 41 and the second oil hydraulic cylinder 42 are detected, preferably A1 mouth connects the rodless cavity of the first oil hydraulic cylinder 41, B1 mouth connects the rod chamber of the first oil hydraulic cylinder 41, and A2 mouth connects the rodless cavity of the second oil hydraulic cylinder 42, and B2 mouth connects the rod chamber of the second oil hydraulic cylinder 42.Should be understood that, the present invention can also have other possible Placement.
The second oil pump 12 can be to the second chamber repairing of the first pressurized cylinder 21, the second pressurized cylinder 22, and the break-make of each oil circuit can be passed through position control valve (as two-position two-way solenoid valve is controlled), to adapt to the flexible state of each oil hydraulic cylinder and pressurized cylinder.Preferably, on each oil circuit, one-way valve is set, by hydraulic oil, flow to and oil pressure is controlled the break-make of each oil circuit, the first embodiment's oil hydraulic cylinder loads detection device and also comprises one or several in the first one-way valve 51, the second one-way valve 52, the 3rd one-way valve 53 and the 4th one-way valve 54, wherein:
The first one-way valve 51 is connected between the second oil pump 12 and A1 mouth, and its filler opening connects the second oil pump 12; The second one-way valve 52 is connected between the second oil pump 12 and B1 mouth, and its filler opening connects the second oil pump 12; The 3rd one-way valve 53 is connected between the second oil pump 12 and A2 mouth, and its filler opening connects the second oil pump 12; The 4th one-way valve 54 is connected between the second oil pump 12 and B2 mouth, and its filler opening connects the second oil pump 12.
Selector valve 3 can be multiple possible position control valve or combination, be preferably the three-position four-way valve that comprises P mouth, T mouth, A mouth and B mouth, A mouth connects the first chamber of the first pressurized cylinder 21, and B mouth connects the first chamber of the second pressurized cylinder 22, P mouth connects the first oil pump 11, and T mouth connects fuel tank.More preferably, this selector valve 3 is Y type three-position four-way valve.When meta, the first chamber of the first chamber of the first pressurized cylinder 21 and the second pressurized cylinder 22 is communicated with fuel tank simultaneously.
The second oil hydraulic cylinder 42 is the first chamber fuel feeding to pressurized cylinder by the second interface, multiple possible position control valve and pressure controlled valve can be set on this oil circuit, to carry out the control of the hydraulic oil flow direction and pressure.Preferably, between A2 mouth and the first chamber of the first pressurized cylinder 21, be provided with the first sequence valve 61, and/or, between B2 mouth and the first chamber of the second pressurized cylinder 22, be provided with the second sequence valve 62.
When the oil pressure of A2 mouth reaches the cracking pressure of the first sequence valve 61, this first sequence valve 61 is opened, and hydraulic oil flows to the first chamber of the first pressurized cylinder 21.The working principle of the second sequence valve 62 is identical with the first sequence valve 61.The first sequence valve 61 and the second sequence valve 62 are preferably electric ratio sequence valve, and then can adjust on-load pressure for different test fluid cylinder pressures.
Should be understood that, this first sequence valve 61 and the second sequence valve 62 can, by other multiple possible valve or combination replacement, as substituted by a throttle valve respectively, can be realized the technique effect of the present invention from the second oil hydraulic cylinder to pressurized cylinder fuel feeding equally.
Preferably, for the first embodiment, between the first oil pump 11 and fuel tank, can also be provided with the first electric proportional pressure control valve 71, adjustable the first oil pump 11 of this first electric proportional pressure control valve 71 go out oil pressure, and can play safe overflow effect.In addition, between the second oil pump 12 and fuel tank, can also be provided with the second electric proportional pressure control valve 72, the oil compensation pressure of adjustable the second oil pump 12 of this second electric proportional pressure control valve 72.
Further, the first embodiment's oil hydraulic cylinder loading detection device also comprises that position switch 8 is connected by controller with selector valve 3 for detection of the position switch 8 of the first oil hydraulic cylinder 41 or the second oil hydraulic cylinder 42 strokes.This position switch 8 can be position limit switch, is preferably approach switch, and is provided with two.
For the mounting structure shown in Fig. 2 and orientation, when the first oil hydraulic cylinder 41 extend out to the approach switch that triggers the right, show that it stretches out and put in place, approach switch changes on off state, and controller is controlled selector valve 3 commutations according to this on off state; When the first oil hydraulic cylinder 41 extend out to the approach switch that triggers the left side, show that it retracts and put in place, similarly controller can be controlled selector valve 3 commutations in time.
Below in conjunction with Fig. 2, the specific works procedure declaration that the first embodiment's oil hydraulic cylinder is loaded to detection device is as follows:
When selector valve 3 is operated in left position, the pressure oil of the first oil pump 11 enters the rodless cavity of the first pressurized cylinder 21 through selector valve 3, and the second oil hydraulic cylinder 42 rodless cavities are fuel-displaced through the first sequence valve 61 simultaneously, jointly drive the first pressurized cylinder 21 to stretch out; The first pressurized cylinder 21 rod chamber pressure oils enter the first oil hydraulic cylinder 41 rodless cavities and drive it to stretch out; The first oil hydraulic cylinder 41 rod chamber oil returns, enter the second pressurized cylinder 22 rod chambers, and the second oil pump 12, to the second pressurized cylinder 22 rod chamber repairings, drives the second pressurized cylinder 22 to retract jointly; The hydraulic oil of the second pressurized cylinder 22 rodless cavities is through selector valve 3 oil sump tanks; The second oil pump 12 is given the second oil hydraulic cylinder 42 rod chamber repairings.
When selector valve 3 is operated in right position, the state of aforementioned the first pressurized cylinder 21, the second pressurized cylinder 22, the first oil hydraulic cylinder 41, the second oil hydraulic cylinder 42 rod chambers and rodless cavity alternately, does not repeat them here.Switch the position, left and right of repeating by selector valve 3, can realize the fatigue loading of oil hydraulic cylinder.
The oil hydraulic cylinder that shown in Fig. 3 is second embodiment of the invention loads the phase diagram of detection device when detecting.Identical with the first embodiment, the second embodiment also comprises the structures such as the first oil pump 11, the second oil pump 12, the first pressurized cylinder 21, the second pressurized cylinder 22, selector valve 3, first interface, the second interface, the first one-way valve 51, the second one-way valve 52, the 3rd one-way valve 53, the 4th one-way valve 54.Different, in the quantity of the first embodiment's sequence valve, be two, and the quantity of sequence valve is only one in a second embodiment, i.e. the 3rd sequence valve 63 shown in Fig. 3.
In addition, the second embodiment also comprises the 5th one-way valve 55 and the 6th one-way valve 56, forms hydraulic full-bridge loop with aforementioned the 3rd one-way valve 53 and the 4th one-way valve 54.Particularly, wherein the filler opening of the 5th one-way valve 55 connects A2 mouth, the filler opening of the 6th one-way valve 56 connects B2 mouth, the oil outlet of the oil outlet of the 5th one-way valve 55 and the 6th one-way valve 56 is connected to form the first oil circuit, the filler opening of the 3rd sequence valve 63 is connected on the first oil circuit, and the oil outlet of the 3rd sequence valve 63 is connected on the oil-feed oil circuit of selector valve 3.
When the second oil hydraulic cylinder 42 is retracted, the hydraulic oil of its rodless cavity enters in the first chamber of the first pressurized cylinder 21 successively after A2 mouth, the 5th one-way valve 55, the 3rd sequence valve 63, selector valve 3; When the second oil hydraulic cylinder 42 stretches out, the hydraulic oil of its rod chamber enters in the first chamber of the second pressurized cylinder 22 successively after B2 mouth, the 6th one-way valve 56, the 3rd sequence valve 63, selector valve 3.On the basis of technique scheme, can save a sequence valve, and can realize technique effect of the present invention equally.
Specific works process and first embodiment of second embodiment's other parts are basic identical, specifically can, with reference to above stated specification, not repeat them here herein.
In sum, first embodiment of the invention and the second embodiment, can be oily higher than the driving pressure of oil supply pressure to the first oil hydraulic cylinder 41 outputs by pressurized cylinder is set, thereby can avoid oil sources in high-pressure work state, improve the oil sources life-span; In addition, previous embodiment also forms hydraulic oil and reclaims oil circuit between each pressurized cylinder and oil hydraulic cylinder, make energy recyclable with recycle, power save mode science, system loss is little, heating is few, can reduce the first oil pump repairing amount and then reduce installed power and save system cools power, reduces fatigue loading operating cost.
Therefore, technique effect of the present invention is significant.
The foregoing is only preferred embodiment of the present invention, in order to limit the present invention, within the spirit and principles in the present invention not all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (10)
1. an oil hydraulic cylinder loads detection device, it is characterized in that, comprise the first oil pump (11), the second oil pump (12), pressurized cylinder, selector valve (3), the first interface for being connected with the first oil hydraulic cylinder (41), the second interface for being connected with the second oil hydraulic cylinder (42), wherein:
The first chamber of described pressurized cylinder connects described the first oil pump (11) to its fuel feeding by described selector valve (3), also connects described the second interface to its fuel feeding simultaneously;
The second chamber of described pressurized cylinder connects described first interface, for to described first interface fuel feeding;
Described the second interface connects described the second oil pump (12) to its fuel feeding.
2. oil hydraulic cylinder according to claim 1 loads detection device, it is characterized in that, the quantity of described pressurized cylinder is one, and the quantity of described first interface is one, and the quantity of described the second interface is one.
3. oil hydraulic cylinder according to claim 1 loads detection device, it is characterized in that:
The quantity of described pressurized cylinder is two, is respectively the first pressurized cylinder (21) and the second pressurized cylinder (22);
The quantity of described first interface is two, is respectively A1 mouth and B1 mouth;
The quantity of described the second interface is two, is respectively A2 mouth and B2 mouth;
The first chamber of described the first pressurized cylinder (21) connects selector valve (3) and A2 mouth, and the second chamber of described the first pressurized cylinder (21) connects A1 mouth;
The first chamber of described the second pressurized cylinder (22) connects selector valve (3) and B2 mouth, and the second chamber of described the second pressurized cylinder (22) connects (B1) mouthful;
Described the second oil pump (12) connects respectively described A1 mouth, B1 mouth, A2 mouth and B2 mouth.
4. oil hydraulic cylinder according to claim 3 loads detection device, it is characterized in that, also comprise one or several in the first one-way valve (51), the second one-way valve (52), the 3rd one-way valve (53) and the 4th one-way valve (54), wherein:
Described the first one-way valve (51) is connected between described the second oil pump (12) and A1 mouth, and its filler opening connects described the second oil pump (12);
Described the second one-way valve (52) is connected between described the second oil pump (12) and B1 mouth, and its filler opening connects described the second oil pump (12);
Described the 3rd one-way valve (53) is connected between described the second oil pump (12) and A2 mouth, and its filler opening connects described the second oil pump (12);
Described the 4th one-way valve (54) is connected between described the second oil pump (12) and B2 mouth, and its filler opening connects described the second oil pump (12).
5. oil hydraulic cylinder according to claim 3 loads detection device, it is characterized in that, described selector valve (3) is the three-position four-way valve that comprises P mouth, T mouth, A mouth and B mouth, described A mouth connects the first chamber of the first pressurized cylinder (21), described B mouth connects the first chamber of the second pressurized cylinder (22), described P mouth connects described the first oil pump (11), and described T mouth connects fuel tank.
6. oil hydraulic cylinder according to claim 3 loads detection device, it is characterized in that, between the first chamber of described A2 mouth and described the first pressurized cylinder (21), be provided with the first sequence valve (61), and/or, between described B2 mouth and the first chamber of described the second pressurized cylinder (22), be provided with the second sequence valve (62).
7. oil hydraulic cylinder according to claim 3 loads detection device, it is characterized in that, also comprise the 3rd sequence valve (63), the 5th one-way valve (55) and the 6th one-way valve (56), the filler opening of described the 5th one-way valve (55) connects described A2 mouth, the filler opening of described the 6th one-way valve (56) connects described B2 mouth, the oil outlet of the oil outlet of described the 5th one-way valve (55) and the 6th one-way valve (56) is connected to form the first oil circuit, the filler opening of described the 3rd sequence valve (63) is connected on described the first oil circuit, the oil outlet of described the 3rd sequence valve (63) is connected on the oil-feed oil circuit of described selector valve (3).
8. according to the oil hydraulic cylinder described in claim 1-7 any one, load detection device, it is characterized in that, between described the first oil pump (11) and fuel tank, be provided with the first electric proportional pressure control valve (71), and/or, between described the second oil pump (12) and fuel tank, be provided with the second electric proportional pressure control valve (72).
9. according to the oil hydraulic cylinder described in claim 1-7 any one, load detection device, it is characterized in that, also comprise that described position switch (8) is connected by controller with described selector valve (3) for detection of the position switch (8) of the first oil hydraulic cylinder (41) or the second oil hydraulic cylinder (42) stroke.
10. according to the oil hydraulic cylinder described in claim 1-7 any one, load detection device, it is characterized in that, the first chamber of described pressurized cylinder is rodless cavity, and the second chamber of described pressurized cylinder is rod chamber.
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| CN201410195778.2A CN103967869B (en) | 2014-05-12 | 2014-05-12 | A kind of hydraulic cylinder loads detection means |
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| CN201410195778.2A CN103967869B (en) | 2014-05-12 | 2014-05-12 | A kind of hydraulic cylinder loads detection means |
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| CN104251782A (en) * | 2014-09-16 | 2014-12-31 | 南车青岛四方机车车辆股份有限公司 | Train pressure boosting cylinder test tooling and test method |
| CN107023533A (en) * | 2017-06-22 | 2017-08-08 | 合肥工业大学 | A kind of hydraulic control system for resilient bearing multidimensional rigidity test |
| CN109386515A (en) * | 2018-12-06 | 2019-02-26 | 哈工新欧(岳阳)测控装备有限公司 | Energy-saving large_sized hydraulic cylinder testing stand |
| CN110030218A (en) * | 2019-05-15 | 2019-07-19 | 广州计量检测技术研究院 | Pump hydraulic loading system and its application method |
| CN110762072A (en) * | 2019-11-05 | 2020-02-07 | 徐州徐工矿业机械有限公司 | Hydraulic system and method for realizing sequential action of engineering vehicle mechanism and engineering vehicle |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19517305C1 (en) * | 1995-05-02 | 1996-09-26 | Schmidt & Co Gmbh Kranz | Dynamic pulse testing device for fluid circuit component |
| EP1020648A1 (en) * | 1998-07-15 | 2000-07-19 | Shin Caterpillar Mitsubishi Ltd. | Method and device for controlling work machine |
| CN201757101U (en) * | 2010-08-02 | 2011-03-09 | 湖南协力液压有限公司 | Hydraulic cylinder factory test bed |
| CN102705302A (en) * | 2012-05-11 | 2012-10-03 | 浙江大学 | Dynamic testing system for high-pressure large-flow oil cylinder |
| CN103410810A (en) * | 2013-08-13 | 2013-11-27 | 湖南特力液压有限公司 | Testing device for testing durability of sealing parts of hydraulic cylinder |
| CN103644151A (en) * | 2013-12-05 | 2014-03-19 | 燕山大学 | Energy-conservation and low-impact hydraulic cylinder test testbed hydraulic control system |
-
2014
- 2014-05-12 CN CN201410195778.2A patent/CN103967869B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19517305C1 (en) * | 1995-05-02 | 1996-09-26 | Schmidt & Co Gmbh Kranz | Dynamic pulse testing device for fluid circuit component |
| EP1020648A1 (en) * | 1998-07-15 | 2000-07-19 | Shin Caterpillar Mitsubishi Ltd. | Method and device for controlling work machine |
| CN201757101U (en) * | 2010-08-02 | 2011-03-09 | 湖南协力液压有限公司 | Hydraulic cylinder factory test bed |
| CN102705302A (en) * | 2012-05-11 | 2012-10-03 | 浙江大学 | Dynamic testing system for high-pressure large-flow oil cylinder |
| CN103410810A (en) * | 2013-08-13 | 2013-11-27 | 湖南特力液压有限公司 | Testing device for testing durability of sealing parts of hydraulic cylinder |
| CN103644151A (en) * | 2013-12-05 | 2014-03-19 | 燕山大学 | Energy-conservation and low-impact hydraulic cylinder test testbed hydraulic control system |
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| CN104251782A (en) * | 2014-09-16 | 2014-12-31 | 南车青岛四方机车车辆股份有限公司 | Train pressure boosting cylinder test tooling and test method |
| CN107023533A (en) * | 2017-06-22 | 2017-08-08 | 合肥工业大学 | A kind of hydraulic control system for resilient bearing multidimensional rigidity test |
| CN107023533B (en) * | 2017-06-22 | 2018-03-16 | 合肥工业大学 | A kind of hydraulic control system for resilient bearing multidimensional rigidity test |
| CN109386515A (en) * | 2018-12-06 | 2019-02-26 | 哈工新欧(岳阳)测控装备有限公司 | Energy-saving large_sized hydraulic cylinder testing stand |
| CN109386515B (en) * | 2018-12-06 | 2024-03-19 | 哈工新欧(岳阳)测控装备有限公司 | Energy-saving large-sized hydraulic cylinder test bed |
| CN110030218A (en) * | 2019-05-15 | 2019-07-19 | 广州计量检测技术研究院 | Pump hydraulic loading system and its application method |
| CN110762072A (en) * | 2019-11-05 | 2020-02-07 | 徐州徐工矿业机械有限公司 | Hydraulic system and method for realizing sequential action of engineering vehicle mechanism and engineering vehicle |
| CN110762072B (en) * | 2019-11-05 | 2022-02-15 | 徐州徐工矿业机械有限公司 | Hydraulic system and method for realizing sequential action of engineering vehicle mechanism and engineering vehicle |
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Effective date of registration: 20191204 Address after: 417004 No.11, Xinping street, industrial park, Loudi Economic Development Zone, Hunan Province Patentee after: Loudi Zhongxing Hydraulic Fittings Co., Ltd. Address before: 410100 Changsha economic and Technological Development Zone, Hunan City, the 31 industrial city Patentee before: SANY Automobile Manufacturing Co., Ltd. |