CN221195557U - Hydraulic system of aviation folding stay bar test bed - Google Patents
Hydraulic system of aviation folding stay bar test bed Download PDFInfo
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- CN221195557U CN221195557U CN202322759832.9U CN202322759832U CN221195557U CN 221195557 U CN221195557 U CN 221195557U CN 202322759832 U CN202322759832 U CN 202322759832U CN 221195557 U CN221195557 U CN 221195557U
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- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 title claims abstract description 16
- 238000010521 absorption reaction Methods 0.000 claims description 20
- 238000012360 testing method Methods 0.000 claims description 11
- 239000007788 liquid Substances 0.000 claims description 8
- 230000001105 regulatory effect Effects 0.000 claims description 3
- 238000001514 detection method Methods 0.000 abstract description 2
- 239000003921 oil Substances 0.000 description 111
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 239000010720 hydraulic oil Substances 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000005381 potential energy Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
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Abstract
The utility model provides a hydraulic system of an aviation folding stay bar test bed, which relates to the field of aviation equipment detection and comprises a product oil source system and a loading oil source system.
Description
Technical Field
The utility model relates to the field of aviation equipment detection, in particular to a hydraulic system of an aviation folding stay bar test bed.
Background
Folding braces are an important component of aircraft and are used in many structures, such as aircraft landing gear, for landing gear down lock support and for bringing the landing gear up and down for folding. The folding stay bar is usually locked by a lock mechanism when the landing gear is put down so as to avoid accidental folding, and when the landing gear is required to be folded, the lock mechanism is required to be driven to unlock so that the stay bar can be folded, thereby driving the landing gear to be stored in the machine body.
The folding stay rod is delivered after a series of tests when leaving a factory, especially the folding stay rod applied to an airplane or aviation, and more needs to be subjected to strict tests, so that a set of strict hydraulic test system is needed, and no special hydraulic system for measuring the folding stay rod is available at present.
Disclosure of utility model
The utility model aims to provide an aviation folding stay bar test bed hydraulic system which is specially used for testing the performance of a folding stay bar in a working state.
Embodiments of the present utility model are implemented as follows:
In a first aspect, the present utility model provides an aviation folding stay test stand hydraulic system comprising:
The product oil source system comprises a first power source, a first high-pressure filter, a first three-position four-way reversing valve and a second high-pressure filter; the input end of the first high-pressure filter is connected with the output end of the first power source, the output end of the first high-pressure filter is connected with the P port of the first three-position four-way reversing valve, the T port, the A port and the B port of the first three-position four-way reversing valve are respectively connected with the second high-pressure filter, the rodless cavity of the supporting rod actuating cylinder and the rod cavity of the supporting rod actuating cylinder, and the output end of the second high-pressure filter is connected with the oil return end of the first power source;
The loading oil source system comprises a second power source, a first one-way valve, a second three-position four-way reversing valve and a third high-pressure filter; the second power source comprises a low-pressure large-flow pump and a high-pressure small-flow pump, the low-pressure large-flow pump is connected with the first one-way valve, the high-pressure small-flow pump is connected with the second one-way valve, the output ends of the first one-way valve and the second one-way valve are combined into one passage, the first one-way valve and the output ends of the second one-way valve are connected with the P port of the second three-position four-way reversing valve, the T port, the A port and the B port of the second three-position four-way reversing valve are respectively connected with the third high-pressure filter, the rod cavity of the loading oil cylinder and the rodless cavity of the loading oil cylinder, and the output end of the third high-pressure filter is connected with the oil return end of the second power source.
In an alternative embodiment, the product oil source system further comprises a first overflow valve, an oil inlet of the first overflow valve is connected with an output end of the first high-pressure filter, and an oil outlet of the first overflow valve is connected with an input end of the second high-pressure filter.
In an alternative embodiment, the product oil source system further comprises a first two-position two-way valve, one end of the first two-position two-way valve is connected with the output end of the first high-pressure filter, and the other end of the first two-position two-way valve is connected with the input end of the second high-pressure filter.
In an alternative embodiment, the product oil source system further comprises a first cooler disposed on a passage of the second high pressure filter connecting the first three-position four-way reversing valve.
In an alternative embodiment, the first power source includes a first tank, a first level thermometer, a first oil suction filter, a first air filter, and a first high pressure hydraulic pump; the first liquid level thermometer, the first oil absorption filter and the first air filter are all arranged on the first oil tank, one end input end of the first high-pressure hydraulic pump is connected with the first oil absorption filter, the output end is connected with the first high-pressure filter, and the oil return end of the first power source is arranged on the first oil tank.
In an alternative embodiment, the loading oil source system further includes a second overflow valve and a second two-position two-way valve, wherein an oil inlet, an oil outlet and a pressure regulating port of the second overflow valve are respectively connected with the output end of the low-pressure large-flow pump, the input end of the third high-pressure filter and the input end of the second two-position two-way valve, and the output end of the second two-position two-way valve is connected with the input end of the third high-pressure filter.
In an optional embodiment, the oil loading source system further comprises a third overflow valve and a third two-position two-way valve, an oil inlet of the third overflow valve is connected with an output end of the high-pressure low-flow pump, an oil outlet of the third overflow valve is connected with an input end of the third high-pressure filter, one end of the second two-position two-way valve is connected with the high-pressure low-flow pump, and the other end of the second two-position two-way valve is connected with an input end of the third high-pressure filter.
In an alternative embodiment, the loading oil source system further comprises a two-position three-way reversing valve, wherein a port P, a port O and a port A of the two-position three-way reversing valve are respectively connected with the input end of the third high-pressure filter, a port A of the second three-position four-way reversing valve and a rodless cavity of the loading oil cylinder.
In an alternative embodiment, the loading oil source system further comprises an accumulator, a fourth high-pressure filter and a second cooler, wherein the accumulator is connected to the output end of the first one-way valve; the first high-pressure filter is arranged on a passage of the second three-position four-way reversing valve, which is connected with the first one-way valve and the second one-way valve; the second cooler is arranged at the input end of the third high-pressure filter.
In an alternative embodiment, the second power source includes a second oil tank, a second level thermometer, a second oil absorption filter, a third oil absorption filter, and a second air cleaner; the second liquid level thermometer, the second oil absorption filter, the third oil absorption filter and the second air filter are all arranged on the second oil tank, the low-pressure large-flow pump and the high-pressure small-flow pump are respectively connected with the second oil absorption filter and the third oil absorption filter, and the oil return end of the second power source is arranged on the second oil tank.
The embodiment of the utility model has the beneficial effects that:
The utility model provides a hydraulic system of an aviation folding stay bar test bed, which comprises a product oil source system and a loading oil source system, wherein the product oil source system comprises a first power source, a first high-pressure filter, a first three-position four-way reversing valve and a second high-pressure filter; the input end of the first high-pressure filter is connected with the output end of the first power source, the output end of the first high-pressure filter is connected with the P port of the first three-position four-way reversing valve, the T port, the A port and the B port of the first three-position four-way reversing valve are respectively connected with the second high-pressure filter, the rodless cavity of the stay rod actuator cylinder and the rod cavity of the stay rod actuator cylinder, and the output end of the second high-pressure filter is connected with the oil return end of the first power source; the loading oil source system comprises a second power source, a first one-way valve, a second three-position four-way reversing valve and a third high-pressure filter; the second power source comprises a low-pressure large-flow pump and a high-pressure small-flow pump, the low-pressure large-flow pump is connected with a first one-way valve, the high-pressure small-flow pump is connected with a second one-way valve, the output ends of the first one-way valve and the second one-way valve are combined into one passage, the passage is connected with a P port of a second three-position four-way reversing valve, a T port of the second three-position four-way reversing valve, a port A and a port B are respectively connected with a third high-pressure filter, a rod cavity of a loading oil cylinder and a rodless cavity of the loading oil cylinder, and the output end of the third high-pressure filter is connected with an oil return end of the second power source. The utility model is used for measuring various performances of the folding stay bar, in addition, the oil source loading system adopts a configuration mode of combining a low-pressure large-flow pump and a high-pressure small-flow pump, oil is supplied through the low-pressure large-flow pump, and the pressure supply mode of the high-pressure small-flow pump is more effective in saving system energy, so that the equipment cost is effectively reduced.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present utility model and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic diagram of a hydraulic system of an aviation folding stay bar test stand provided by an embodiment of the utility model.
Icon:
11-a first high pressure filter; 12-a first three-position four-way reversing valve; 13-a second high pressure filter; 14-a first overflow valve; 15-a first two-position two-way valve; 16-a first cooler; 17-a first oil tank; 18-a first level thermometer; 19-a first oil absorption filter; 20-a first air cleaner; 21-a first high pressure hydraulic pump; 23-a first one-way valve; 24-a second one-way valve; 25-a second three-position four-way reversing valve; 26-a third high pressure filter; 27-low pressure high flow pump; 28-high pressure small flow pump; 29-a second overflow valve; 30-a second two-position two-way valve; 31-a third overflow valve; 32-a third two-position two-way valve; 33-two-position three-way reversing valve; 34-accumulator; 35-a fourth high pressure filter; 36-a second cooler; 37-a second oil tank; 38-a second level thermometer; 39-a second oil absorption filter; 40-a third oil absorption filter; 41-a second air cleaner.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.
In the description of the present utility model, it should be noted that, directions or positional relationships indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., are directions or positional relationships based on those shown in the drawings, or are directions or positional relationships conventionally put in use of the inventive product, are merely for convenience of describing the present utility model and simplifying the description, and are not indicative or implying that the apparatus or element to be referred to must have a specific direction, be constructed and operated in a specific direction, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," "third," and the like are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.
Furthermore, the terms "horizontal," "vertical," and the like do not denote a requirement that the component be absolutely horizontal or overhang, but rather may be slightly inclined. As "horizontal" merely means that its direction is more horizontal than "vertical", and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the present utility model, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
As shown in fig. 1, the embodiment provides a hydraulic system of an aviation folding stay bar test bed, which comprises a product oil source system and a loading oil source system, wherein the product oil source system comprises a first power source, a first high-pressure filter 11, a first three-position four-way reversing valve 12 and a second high-pressure filter 13; the input end of the first high-pressure filter 11 is connected with the output end of the first power source, the output end of the first high-pressure filter 11 is connected with the P port of the first three-position four-way reversing valve 12, the T port, the A port and the B port of the first three-position four-way reversing valve 12 are respectively connected with the second high-pressure filter 13, the rodless cavity of the supporting rod actuating cylinder and the rod cavity of the supporting rod actuating cylinder, and the output end of the second high-pressure filter 13 is connected with the oil return end of the first power source; the loading oil source system comprises a second power source, a first one-way valve 23, a second one-way valve 24, a second three-position four-way reversing valve 25 and a third high-pressure filter 26; the second power source comprises a low-pressure large-flow pump 27 and a high-pressure small-flow pump 28, the low-pressure large-flow pump 27 is connected with the first one-way valve 23, the high-pressure small-flow pump 28 is connected with the second one-way valve 24, the output ends of the first one-way valve 23 and the second one-way valve 24 are combined into one passage and are connected with the P port of the second three-position four-way reversing valve 25, the T port and the A port of the second three-position four-way reversing valve 25 are respectively connected with the third high-pressure filter 26, the rod cavity of the loading cylinder and the rodless cavity of the loading cylinder, and the output end of the third high-pressure filter 26 is connected with the oil return end of the second power source.
In detail, when the first three-position four-way reversing valve 12 is not electrified, the port P is closed, the port A and the port B are communicated with the port T, when the first three-position four-way reversing valve 12 is electrified at a first potential, the port P is communicated with the port A, the port B is communicated with the port T, and when the first three-position four-way reversing valve 12 is electrified at a second potential, the port P is communicated with the port B, the port A is communicated with the port T, so that reversing is completed; in this embodiment, when the second three-position four-way reversing valve 25 is not electrified, the four ports are all closed, when the second three-position four-way reversing valve 25 is electrified at the first potential, the port P and the port a are connected, the port B and the port T are connected, and when the second three-position four-way reversing valve 25 is electrified at the second potential, the port P and the port B are connected, and the port a and the port T are connected, so that the reversing is completed.
It should be noted that the second three-position four-way reversing valve 25 in this embodiment is a servo valve.
In addition, the oil loading system adopts a configuration mode of combining the low-pressure large-flow pump 27 and the high-pressure small-flow pump 28, and the system energy is saved more effectively by supplying oil through the low-pressure large-flow pump 27 and supplying pressure through the high-pressure small-flow pump 28, so that the equipment cost is reduced effectively.
Further, the product oil source system further comprises a first overflow valve 14, an oil inlet of the first overflow valve 14 is connected with an output end of the first high-pressure filter 11, and an oil outlet of the first overflow valve is connected with an input end of the second high-pressure filter 13. In detail, the pressure value of the first overflow valve 14 is 28MPa, when the pressure of the outlet oil of the first power source is greater than 28MPa, the first overflow valve 14 is communicated, high-pressure oil is led back to the first power source, and damage to a hydraulic system caused by the high-pressure oil is avoided.
Further, the product oil source system further comprises a first two-position two-way valve 15, one end of the first two-position two-way valve 15 is connected with the output end of the first high-pressure filter 11, and the other end of the first two-position two-way valve is connected with the input end of the second high-pressure filter 13. In detail, the first two-way valve 15 in this embodiment is connected under the condition of no power, and is disconnected under the condition of power, so that under the condition of normal operation of the hydraulic system, the first two-way valve 15 is in the condition of power-on, and when the hydraulic system fails, the first two-way valve 15 can be powered off, so that hydraulic oil directly flows back to the first power source, and further damage to the hydraulic system can be avoided in time.
Further, the product oil source system further comprises a first cooler 16, and the first cooler 16 is arranged on a passage of the second high-pressure filter 13 connected with the first three-position four-way reversing valve 12. In detail, the cooler in this embodiment is water-cooled, and two connectors are provided on the cooler, one for water inlet and the other for water outlet.
In the present embodiment, the first power source includes a first oil tank 17, a first level thermometer 18, a first oil suction filter 19, a first air cleaner 20, and a first high-pressure hydraulic pump 21; the first liquid level thermometer 18, the first oil suction filter 19 and the first air filter 20 are all arranged on the first oil tank 17, one end input end of the first high-pressure hydraulic pump 21 is connected with the first oil suction filter 19, the output end is connected with the first high-pressure filter 11, and the oil return end of the first power source is arranged on the first oil tank 17. In detail, the first oil suction filter 19 is used for filtering out impurities in the first power source and preventing the oil source containing the impurities from blocking the hydraulic system; the value of the first high-pressure hydraulic pump 21 is 7.5KW.
Further, the loading oil source system further comprises a second overflow valve 29 and a second two-position two-way valve 30, wherein an oil inlet, an oil outlet and a pressure regulating port of the second overflow valve 29 are respectively connected with an output end of the low-pressure large-flow pump 27, an input end of the third high-pressure filter 26 and an input end of the second two-position two-way valve 30, and an output end of the second two-position two-way valve 30 is connected with an input end of the third high-pressure filter 26. In detail, the pressure value of the second relief valve 29 in the present embodiment is 5MPa, and the second two-position two-way valve 30 is connected when power is not supplied and is not connected when power is supplied.
It will be appreciated that the second relief valve 29 and the second two-position two-way valve 30 are combined into an electromagnetic relief valve, which is mainly used for protection in hydraulic systems, and that part of the hydraulic oil is discharged when the pressure is excessive, so as to protect hydraulic pipes, devices, etc. In the design of this embodiment, the solenoid spill valve coil is electrically closed and de-energized open, primarily to prevent hydraulic pressure from being maintained in the event of a system de-energized.
Further, the loading oil source system further comprises a third overflow valve 31 and a third two-position two-way valve 32, wherein an oil inlet of the third overflow valve 31 is connected with an output end of the high-pressure small-flow pump 28, an oil outlet of the third overflow valve is connected with an input end of the third high-pressure filter 26, one end of the second two-position two-way valve 30 is connected with the high-pressure small-flow pump 28, and the other end of the second two-position two-way valve is connected with an input end of the third high-pressure filter 26. In detail, the pressure value of the third relief valve 31 is 21MPa. It will be appreciated that the combination of third relief valve 31 and third two-position two-way valve 32 is also an electromagnetic relief valve, primarily for protecting hydraulic piping and devices within the system.
In this embodiment, the loading oil source system further includes a two-position three-way reversing valve 33, where the P port, the O port, and the a port of the two-position three-way reversing valve 33 are respectively connected to the input end of the third high pressure filter 26, the a port of the second three-position four-way reversing valve 25, and the rodless cavity of the loading oil cylinder. In detail, when the two-position three-way reversing valve 33 is in a state of not being electrified, the port P is communicated with the port A, the port T is closed, and when the two-position three-way reversing valve 33 is in a state of being electrified, the port P is closed, and the port A is communicated with the port T.
The loading oil source system further comprises an accumulator 34, a fourth high-pressure filter 35 and a second cooler 36, wherein the accumulator 34 is connected to the output end of the first one-way valve 23; the first high-pressure filter 11 is arranged on a passage of the second three-position four-way reversing valve 25, which connects the combining passage of the first check valve 23 and the second check valve 24; a second cooler 36 is provided at the input of the third high-pressure filter 26.
It will be appreciated that the accumulator 34 provided in this embodiment is an energy storage device in a hydraulic system; the energy in the system is converted into compression energy or potential energy to be stored at proper time, and the compression energy or potential energy is converted into energy such as hydraulic pressure or air pressure to be released when the system is needed, so that the system is supplied again. When the instantaneous pressure of the system increases, the system can absorb the energy of the part so as to ensure that the pressure of the whole system is normal.
The second power source includes a second oil tank 37, a second liquid level thermometer 38, a second oil suction filter 39, a third oil suction filter 40, and a second air cleaner 41; the second liquid level thermometer 38, the second oil suction filter 39, the third oil suction filter 40 and the second air filter 41 are all arranged on the second oil tank 37, the low-pressure large-flow pump 27 and the high-pressure small-flow pump 28 are respectively connected with the second oil suction filter 39 and the third oil suction filter 40, and the oil return end of the second power source is arranged on the second oil tank 37. It will be appreciated that the arrangement of the second power source is substantially the same as the arrangement of the first power source.
The embodiment also provides a minimum folding angle test of the folding stay bar, which is specifically as follows:
Firstly, a product oil source system provides specified rated pressure for a rodless cavity of a stay bar actuator cylinder, and the rod cavity is connected back to the product oil source; after the stay bar product is unlocked, the low-pressure large-flow pump 27 and the high-pressure small-flow pump 28 of the oil source loading system are used for simultaneously supplying oil, and the test is carried out according to the test requirement rate. When the stay bar is unlocked, the low-pressure large-flow pump 27 and the high-pressure small-flow pump 28 are used for simultaneously supplying oil, and the folding rate (not more than 10 degrees/s) is controlled by adjusting the opening degree of the second three-position four-way reversing valve 25; when the folding angle is less than or equal to 30 degrees, the low-pressure large-flow pump 27 automatically unloads to stop oil supply, and only the high-pressure small-flow pump 28 supplies oil to meet the folding rate of not more than 1 degree/s; when the folding angle is folded to 14 degrees, the folding operation is stopped; at the same time, the small flow charge pump stops the supply of oil.
The hydraulic system of the aviation folding stay bar test bed provided by the embodiment has the following advantages:
The hydraulic system of the aviation folding stay bar test bed comprises a product oil source system and a loading oil source system, wherein the product oil source system comprises a first power source, a first high-pressure filter 11, a first three-position four-way reversing valve 12 and a second high-pressure filter 13; the input end of the first high-pressure filter 11 is connected with the output end of the first power source, the output end of the first high-pressure filter 11 is connected with the P port of the first three-position four-way reversing valve 12, the T port, the A port and the B port of the first three-position four-way reversing valve 12 are respectively connected with the second high-pressure filter 13, the rodless cavity of the supporting rod actuating cylinder and the rod cavity of the supporting rod actuating cylinder, and the output end of the second high-pressure filter 13 is connected with the oil return end of the first power source; the loading oil source system comprises a second power source, a first one-way valve 23, a second one-way valve 24, a second three-position four-way reversing valve 25 and a third high-pressure filter 26; the second power source comprises a low-pressure large-flow pump 27 and a high-pressure small-flow pump 28, the low-pressure large-flow pump 27 is connected with the first one-way valve 23, the high-pressure small-flow pump 28 is connected with the second one-way valve 24, the output ends of the first one-way valve 23 and the second one-way valve 24 are combined into one passage and are connected with the P port of the second three-position four-way reversing valve 25, the T port and the A port of the second three-position four-way reversing valve 25 are respectively connected with the third high-pressure filter 26, the rod cavity of the loading cylinder and the rodless cavity of the loading cylinder, and the output end of the third high-pressure filter 26 is connected with the oil return end of the second power source. In addition, the oil loading system adopts a configuration mode of combining the low-pressure large-flow pump 27 and the high-pressure small-flow pump 28, and the system energy is saved more effectively by supplying oil through the low-pressure large-flow pump 27 and supplying pressure through the high-pressure small-flow pump 28, so that the equipment cost is reduced effectively.
The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.
Claims (10)
1. An aviation folding stay bar test stand hydraulic system, comprising:
The product oil source system comprises a first power source, a first high-pressure filter, a first three-position four-way reversing valve and a second high-pressure filter; the input end of the first high-pressure filter is connected with the output end of the first power source, the output end of the first high-pressure filter is connected with the P port of the first three-position four-way reversing valve, the T port, the A port and the B port of the first three-position four-way reversing valve are respectively connected with the second high-pressure filter, the rodless cavity of the supporting rod actuating cylinder and the rod cavity of the supporting rod actuating cylinder, and the output end of the second high-pressure filter is connected with the oil return end of the first power source;
The loading oil source system comprises a second power source, a first one-way valve, a second three-position four-way reversing valve and a third high-pressure filter; the second power source comprises a low-pressure large-flow pump and a high-pressure small-flow pump, the low-pressure large-flow pump is connected with the first one-way valve, the high-pressure small-flow pump is connected with the second one-way valve, the output ends of the first one-way valve and the second one-way valve are combined into one passage, the first one-way valve and the output ends of the second one-way valve are connected with the P port of the second three-position four-way reversing valve, the T port, the A port and the B port of the second three-position four-way reversing valve are respectively connected with the third high-pressure filter, the rod cavity of the loading oil cylinder and the rodless cavity of the loading oil cylinder, and the output end of the third high-pressure filter is connected with the oil return end of the second power source.
2. The hydraulic system of the aviation folding stay bar test stand of claim 1, wherein the product oil source system further comprises a first overflow valve, an oil inlet of the first overflow valve is connected with an output end of the first high-pressure filter, and an oil outlet of the first overflow valve is connected with an input end of the second high-pressure filter.
3. The hydraulic system of claim 2, wherein the product oil source system further comprises a first two-way valve, one end of the first two-way valve is connected to the output end of the first high-pressure filter, and the other end of the first two-way valve is connected to the input end of the second high-pressure filter.
4. The aircraft folding brace testing stand hydraulic system of claim 2, wherein the product oil source system further comprises a first cooler disposed on a path of the second high pressure filter connecting the first three-position four-way reversing valve.
5. The aircraft folding brace test stand hydraulic system of claim 3, wherein the first power source comprises a first oil tank, a first level thermometer, a first oil absorption filter, a first air filter, and a first high pressure hydraulic pump; the first liquid level thermometer, the first oil absorption filter and the first air filter are all arranged on the first oil tank, one end input end of the first high-pressure hydraulic pump is connected with the first oil absorption filter, the output end is connected with the first high-pressure filter, and the oil return end of the first power source is arranged on the first oil tank.
6. The hydraulic system of an aviation folding stay bar test stand according to claim 4 or 5, wherein the loading oil source system further comprises a second overflow valve and a second two-position two-way valve, an oil inlet, an oil outlet and a pressure regulating port of the second overflow valve are respectively connected with an output end of the low-pressure large-flow pump, an input end of the third high-pressure filter and an input end of the second two-position two-way valve, and an output end of the second two-position two-way valve is connected with an input end of the third high-pressure filter.
7. The hydraulic system of the aviation folding stay bar test bed of claim 6, wherein the loading oil source system further comprises a third overflow valve and a third two-position two-way valve, an oil inlet of the third overflow valve is connected with an output end of the high-pressure small-flow pump, an oil outlet of the third overflow valve is connected with an input end of the third high-pressure filter, one end of the second two-position two-way valve is connected with the high-pressure small-flow pump, and the other end of the second two-position two-way valve is connected with the input end of the third high-pressure filter.
8. The hydraulic system of the aviation folding stay bar test stand of claim 6, wherein the loading oil source system further comprises a two-position three-way reversing valve, and a port P, a port O and a port A of the two-position three-way reversing valve are respectively connected with the input end of the third high-pressure filter, a port A of the second three-position four-way reversing valve and a rodless cavity of the loading oil cylinder.
9. The hydraulic system of an aviation folding stay bar test stand of claim 8, wherein the loading oil source system further comprises an accumulator, a fourth high-pressure filter and a second cooler, wherein the accumulator is connected to the output end of the first one-way valve; the first high-pressure filter is arranged on a passage of the second three-position four-way reversing valve, which is connected with the first one-way valve and the second one-way valve; the second cooler is arranged at the input end of the third high-pressure filter.
10. The hydraulic system of an aviation folding stay testing stand of claim 1, wherein the second power source includes a second oil tank, a second liquid level thermometer, a second oil absorption filter, a third oil absorption filter, and a second air cleaner; the second liquid level thermometer, the second oil absorption filter, the third oil absorption filter and the second air filter are all arranged on the second oil tank, the low-pressure large-flow pump and the high-pressure small-flow pump are respectively connected with the second oil absorption filter and the third oil absorption filter, and the oil return end of the second power source is arranged on the second oil tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322759832.9U CN221195557U (en) | 2023-10-13 | 2023-10-13 | Hydraulic system of aviation folding stay bar test bed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322759832.9U CN221195557U (en) | 2023-10-13 | 2023-10-13 | Hydraulic system of aviation folding stay bar test bed |
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| Publication Number | Publication Date |
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| CN221195557U true CN221195557U (en) | 2024-06-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202322759832.9U Active CN221195557U (en) | 2023-10-13 | 2023-10-13 | Hydraulic system of aviation folding stay bar test bed |
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| Country | Link |
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| CN (1) | CN221195557U (en) |
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2023
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