Test device and test method for throwing hose of aerial refueling equipment

Abstract

The invention relates to a test device for throwing a hose of aerial refueling equipment. The test device comprises a mounting bottom plate (1), a fixed loading bracket (2), an elastic rope (3), a movable loading plate (4), a hose loosening mechanism bracket (5), a hose joint simulation piece (6), a shaft pin (7), a cotter pin (8) and a reversing bracket (9). The invention further relates to a test method for throwing the hose of the aerial refueling equipment. The test method comprises the steps of load calibration, loading installation, hose throwing test in a vibration environment and hose throwing test in a low-temperature environment. According to the invention, a real hose of the aerial refueling equipment is replaced by the hose joint simulation piece, so that the installation on a vibration test bed or a low-temperature test box is facilitated, the influence of inertia force of the movable loading plate and the elastic rope on the hose joint can be avoided, and meanwhile, the loading of vibration environment stress in three axial directions of a tested object can be realized.

Description

Technical Field

[0001] The invention belongs to the technical field of aerial refueling equipment, and in particular relates to a test device and a test method for dropping a hose of aerial refueling equipment. Background Art

[0002] During the mission, if the hose rewinding fails and the hose cannot be retracted, the hose can be dropped from the root to ensure the maneuverability of the tanker when being chased by enemy aircraft and the safety of the aircraft landing; the function of dropping the hose of the aerial refueling equipment is realized through the internal hose release mechanism, and when the hose is dropped in the air, the release mechanism simultaneously bears the aerodynamic load of the hose and the airborne environment (such as vibration, low temperature, etc.). In order to verify whether the aerial refueling equipment can successfully drop the hose in the real environment in the ground test, it is necessary to design a test device and test method for dropping the hose to simulate the air load and airborne environment. Summary of the invention

[0003] The purpose of the present invention is to provide a test device and test method for dropping the hose of aerial refueling equipment in response to the above technical problems, to simulate the aerial load and airborne environment, and to verify whether the hose release mechanism of the refueling equipment can successfully drop the hose in a real environment. At the same time, the test device has the characteristics of compact structure, adjustable load, good versatility, and easy implementation of simulating various airborne environments.

[0004] In view of the above problems in the prior art, according to one aspect disclosed in the present invention, the present invention adopts the following technical solution:

[0005] A test device for dropping a hose of an aerial refueling device comprises: a mounting base plate 1, a fixed loading bracket 2, an elastic rope 3, a movable loading plate 4, a hose release mechanism bracket 5, a hose joint simulation part 6, an axle pin 7, a cotter pin 8, and a reversing bracket 9;

[0006] The mounting base plate 1 is fixed on a vibration test bench or placed in a low-temperature test box; the fixed loading bracket 2 is fixed to one end of the upper part of the mounting base plate 1 by bolts, and the fixed loading bracket 2 is provided with a fixed loading plate; the hose releasing mechanism bracket 5 is fixed to the other end of the upper part of the mounting base plate 1; the hose releasing mechanism of the aerial refueling equipment is fixed above the releasing mechanism bracket 5 by bolts, and the end of the hose releasing mechanism is connected to the hose joint simulation part 6; the movable loading plate 4 is arranged opposite to the fixed loading plate, and the outer side of the movable loading plate 4 is connected to the hose joint simulation part 6 by a central connecting rod, and the central connecting rod of the movable loading plate 4 is connected to the hose joint simulation part 6 by an axle pin 7, and an open pin hole is provided at one end of the axle pin 7, and the open pin 8 passes through the open pin hole to prevent the axle pin 7 from falling off; the elastic rope 3 connects the fixed loading plate and the movable loading plate 4, and load can be generated by stretching the elastic rope 3.

[0007] It is characterized in that the test device also includes a reversing bracket 9, which is an L-shaped vertical bracket structure supported and fixed by reinforcing ribs. The reversing bracket 9 is fixed at both ends of the bottom of the mounting base plate 1. After being connected to the mounting base plate 1, the mounting base plate 1 and the test device connected thereto can be flipped 90° as a whole.

[0008] It is characterized in that the mounting base plate 1 is provided with fixing holes adapted to the vibration test bench or the low temperature test box, and is fixed to the vibration test bench or the low temperature test box by bolts.

[0009] It is characterized in that one end of the mounting base plate 1 is provided with a hole adapted to the fixed loading bracket 2, and the mounting base plate 1 is fixedly connected to the fixed loading bracket 2 by bolts.

[0010] It is characterized in that the other end of the mounting base plate 1 is provided with a hole adapted to the loosening mechanism bracket 5. After the elastic rope 3 connects the movable loading plate 4 and the fixed loading bracket 2 as a whole, the movable loading plate 4 is stretched to make the elastic rope 3 reach the length corresponding to the preset load, and then the loosening mechanism bracket 5 is fixed.

[0011] It is characterized in that the fixed loading plate of the fixed loading bracket 2 is provided with holes symmetrically arranged along the axis for passing the elastic rope 3.

[0012] It is characterized in that the movable loading plate 4 is provided with holes symmetrically arranged along the axis for passing the elastic rope 3 .

[0013] It is characterized in that the relative positions of the centers of the holes of the movable loading plate 4 and the fixed loading plate for passing the elastic rope 3 are consistent.

[0014] A test method for dropping an aerial refueling equipment hose comprises the following steps:

[0015] 1) Load calibration:

[0016] After the fixed loading bracket 2 is fixed on the mounting base plate 1, the elastic rope 3 is passed through the corresponding holes on the fixed loading plate and the movable loading plate 4, and the movable loading plate 4 is stretched along the axial direction of the mounting base plate 1. The axial load generated by the elastic rope is measured by the tension sensor, and the length range of the elastic rope 3 that reaches the predetermined load range is recorded, thereby completing the load calibration of the elastic rope 3;

[0017] 2) Load and install:

[0018] After fixing the hose release mechanism of the aerial refueling equipment on the release mechanism bracket 5 by bolts, connect the hose release mechanism and the hose connector simulation part 6, connect the movable loading plate 4 and the hose connector simulation part 6 by the shaft pin 7, and use the cotter pin 8 to prevent them from being separated; stretch the release mechanism bracket 5 along the axial direction of the mounting base plate 1 so that the elastic rope 3 reaches the length range corresponding to the previously calibrated load; adjust the elastic rope 3 within the calibrated length range, align the hole position at the bottom of the release mechanism bracket 5 with the hole position on the mounting base plate 1, and fix them by bolts;

[0019] 3) Hose release test under vibration environment:

[0020] The connected test device is placed as a whole on the horizontal slide table of the vibration test bench, and the test device is fixed by installing the holes at the bottom of the base plate 1. The vibration test bench is started, and the hose release mechanism will bear the hose load and the vibration environment stress at the same time. When the output of the vibration test bench reaches the predetermined vibration load spectrum, the hose release mechanism is controlled to separate from the hose joint simulation part 6, and the elastic rope 3 drives the mobile loading plate 4 to restore to the original length under the elastic action, completing the release of the hose under the vibration environment;

[0021] 4) Hose throwing test in low temperature environment:

[0022] The connected test device is separated from the vibration test bench and placed in a low-temperature test box as a whole. The low-temperature test box is adjusted to the preset air environment temperature. The hose loosening mechanism will bear the hose load and the low-temperature environment stress at the same time. When the temperature reaches the preset value, the hose loosening mechanism is controlled to separate from the hose joint simulation part 6. The elastic rope 3 drives the mobile loading plate 4 to restore to its original length under the elastic action, completing the release of the hose in the low-temperature environment.

[0023] It is characterized in that when the test device needs to change the axial direction for vibration test, after the reversing bracket 9 is connected to the two ends of the bottom of the mounting base plate 1, the reversing bracket 9 is fixed on the vibration test bench to realize the overall flipping of the mounting base plate 1 and the test device connected thereto by 90° so as to carry out the test in the vertical direction.

[0024] Advantages of the present invention:

[0025] 1) A hose connector simulation is used to replace the real hose of the aerial refueling equipment, and an elastic rope is used to simulate the aerodynamic load of the aerial hose. The structure is compact and convenient for the installation of the test device on a vibration test bench or in a low-temperature test chamber. It can simulate the real hose load and the airborne environment when the aerial hose is dropped. The function of dropping the hose of the aerial refueling equipment can be verified in a ground test; 2) The hose connector simulation and the mobile loading plate are connected by a pin shaft, so that the two can have the freedom to rotate along the axis of the pin shaft, which can avoid the influence of the inertia force of the mobile loading plate and the elastic rope on the hose connector; 3) The test device can realize vibration environment stress loading in three axes of the test object. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 Schematic diagram of the test device;

[0027] Figure 2 Schematic diagram of the test device status after release;

[0028] Figure 3 Schematic diagram of the test for reversing direction;

[0029] Among them, 1-mounting base plate, 2-fixed loading bracket, 3-elastic rope, 4-movable loading plate, 5-loosening mechanism bracket, 6-hose joint simulation part, 7-axis pin, 8-open pin, 9-reversing bracket. DETAILED DESCRIPTION

[0030] The present invention is further described below in conjunction with the accompanying drawings and embodiments, but they are not intended to limit the present invention.

[0031] See also Figure 1 — Figure 3 , a test device for dropping the hose of aerial refueling equipment, comprising a mounting base 1, a fixed loading bracket 2, an elastic rope 3, a mobile loading plate 4, a hose loosening mechanism bracket 5, a hose joint simulation part 6, an axle pin 7, a cotter pin 8, and a reversing bracket 9; the device can be used to simulate the dropping of the hose of aerial refueling equipment, and simulate the aerial use environment by being installed on a vibration test bench or a low-temperature test box; the mounting base 1 is used to be fixed on the vibration test bench; the fixed loading bracket 2 is fixed to one end of the mounting base 1 by bolts; the loosening mechanism bracket 5 is fixed to the hose loosening mechanism by bolts, and the hose loosening mechanism of the test product is connected to the hose joint simulation part 6; the hose joint simulation part 6 is connected to the mobile loading plate 4 through the axle pin 7; one end of the axle pin 7 is provided with a cotter pin hole, which passes through the cotter pin 8 to prevent the connection from falling off; the elastic rope 3 connects the fixed loading bracket 2 and the mobile loading plate 4, and a load can be generated by stretching the elastic rope; the reversing bracket 9 is connected to both ends of the mounting base 1, and after being connected to the mounting base 1, the mounting base 1 and the test device connected thereto can be turned over 90° as a whole;

[0032] The installation method is as follows: the fixed loading bracket 2 and the mounting base plate 1 are connected by bolts; the movable loading plate 4 and the fixed loading bracket 2 are connected by passing the elastic rope 3 through the holes symmetrically arranged along the axis on the fixed loading bracket 2 and the movable loading plate 4 respectively; after the test hose loosening mechanism is fixed on the loosening mechanism bracket 5 by bolts, the hose loosening mechanism and the hose joint simulation part 6 are connected, the movable loading plate 4 and the hose joint simulation part 6 are connected by the shaft pin 7, and the split pin 8 is used to prevent them from being separated; the split pin 8 is passed through the split pin hole at one end of the shaft pin 7 to prevent the connection from falling off; after completing the above connection steps, the loosening mechanism bracket 5 is stretched along the axis direction of the mounting base plate 1 so that the elastic rope 3 reaches the calibrated length to realize the loading of the hose load; the loosening mechanism bracket 5 and the mounting base plate 1 are fixed by bolts to install the test device as a whole;

[0033] The test method is:

[0034] 1) Load calibration:

[0035] After the fixed loading bracket 2 is fixed on the mounting base plate 1, the elastic rope 3 is passed through the corresponding holes on the fixed loading plate and the movable loading plate 4, and the movable loading plate 4 is stretched along the axial direction of the mounting base plate 1. The axial load generated by the elastic rope is measured by the tension sensor, and the length range of the elastic rope 3 that reaches the predetermined load range is recorded, thereby completing the load calibration of the elastic rope 3;

[0036] 2) Load and install:

[0037] After fixing the hose release mechanism of the aerial refueling equipment on the release mechanism bracket 5 by bolts, connect the hose release mechanism and the hose connector simulation part 6, connect the movable loading plate 4 and the hose connector simulation part 6 by the shaft pin 7, and use the cotter pin 8 to prevent them from being separated; stretch the release mechanism bracket 5 along the axial direction of the mounting base plate 1 so that the elastic rope 3 reaches the length range corresponding to the previously calibrated load; adjust the elastic rope 3 within the calibrated length range, align the hole position at the bottom of the release mechanism bracket 5 with the hole position on the mounting base plate 1, and fix them by bolts;

[0038] 3) Hose release test under vibration environment:

[0039] The connected test device is placed as a whole on the horizontal slide table of the vibration test bench, and the test device is fixed by installing the holes at the bottom of the base plate 1. The vibration test bench is started, and the hose release mechanism will bear the hose load and the vibration environment stress at the same time. When the output of the vibration test bench reaches the predetermined vibration load spectrum, the hose release mechanism is controlled to separate from the hose joint simulation part 6, and the elastic rope 3 drives the mobile loading plate 4 to restore to the original length under the elastic action, completing the release of the hose under the vibration environment;

[0040] 4) Hose throwing test in low temperature environment:

[0041] The connected test device is separated from the vibration test bench and placed in a low-temperature test box as a whole. The low-temperature test box is adjusted to the preset air environment temperature. The hose loosening mechanism will bear the hose load and the low-temperature environment stress at the same time. When the temperature reaches the preset value, the hose loosening mechanism is controlled to separate from the hose joint simulation part 6. The elastic rope 3 drives the mobile loading plate 4 to restore to its original length under the elastic action, completing the release of the hose in the low-temperature environment.

[0042] When the test device needs to change its axial direction for vibration testing, after connecting the reversing bracket 9 to the two ends of the bottom of the mounting base plate 1, the reversing bracket 9 is fixed on the vibration test bench to flip the mounting base plate 1 and the test device connected thereto by 90° as a whole so as to perform a vertical test.

[0043] The present invention can be expanded to quickly adapt to ground tests of hose dropping of various types of aerial refueling equipment. At the same time, the invention has the advantages of compact structure, adjustable load, good versatility, and easy implementation of simulating various airborne environments.

Claims

1. A test device for releasing a hose of an aerial refueling equipment, comprising: Installing a base plate (1), a fixed loading bracket (2), an elastic rope (3), a movable loading plate (4), a hose release mechanism bracket (5), a hose connector simulation part (6), an axle pin (7), a cotter pin (8) and a reversing bracket (9); The invention is characterized in that the mounting base plate (1) is fixed on a vibration test bench or placed in a low temperature test box; the fixed loading bracket (2) is fixed to one end of the upper part of the mounting base plate (1) by bolts, and the fixed loading bracket (2) is provided with a fixed loading plate; the hose releasing mechanism bracket (5) is fixed to the other end of the upper part of the mounting base plate (1); the hose releasing mechanism of the aerial refueling equipment is fixed to the upper part of the releasing mechanism bracket (5) by bolts, and the end of the hose releasing mechanism is connected to a hose joint simulation part (6); the movable loading plate (4) is arranged opposite to the fixed loading plate, the outer side of the movable loading plate (4) is connected to the hose joint simulation part (6) by a central connecting rod, and the central connecting rod of the movable loading plate (4) is connected to the hose joint simulation part (6) by an axle pin (7), one end of the axle pin (7) is provided with a cotter pin hole, and the cotter pin (8) passes through the cotter pin hole to prevent the axle pin (7) from falling off; the elastic rope (3) connects the fixed loading plate and the movable loading plate (4), and load can be generated by stretching the elastic rope (3).

2. A test device for releasing a hose of an aerial refueling equipment as claimed in claim 1, characterized in that: The test device also includes a reversing bracket (9), which is an L-shaped vertical bracket structure supported and fixed by reinforcing ribs. The reversing bracket (9) is fixed at both ends of the bottom of the mounting base plate (1). After being connected to the mounting base plate (1), the mounting base plate (1) and the test device connected thereto can be turned over 90 degrees as a whole.

3. A test device for releasing the hose of aerial refueling equipment as claimed in claim 2, characterized in that: The installation base plate (1) is provided with fixing holes adapted to the vibration test bench or the low temperature test box, and is fixed to the vibration test bench or the low temperature test box by means of bolts.

4. A test device for dropping a hose of an aerial refueling equipment as claimed in claim 3, characterized in that: One end of the mounting base plate (1) is provided with a hole adapted to the fixed loading bracket (2), and the mounting base plate (1) and the fixed loading bracket (2) are fixedly connected by bolts.

5. A test device for dropping a hose of an aerial refueling equipment as claimed in claim 4, characterized in that: The other end of the mounting base plate (1) is provided with a hole adapted to fit the release mechanism bracket (5); after the elastic rope (3) connects the movable loading plate (4) and the fixed loading bracket (2) into one body, the movable loading plate (4) is stretched so that the elastic rope (3) reaches a length corresponding to a preset load, and then the release mechanism bracket (5) is fixed.

6. A test device for dropping a hose of an aerial refueling equipment as claimed in claim 5, characterized in that: The fixed loading plate of the fixed loading bracket (2) is provided with holes symmetrically arranged along the axis for passing the elastic rope (3).

7. A test device for dropping a hose of an aerial refueling equipment as claimed in claim 6, characterized in that: The movable loading plate (4) is provided with holes symmetrically arranged along the axis for passing the elastic rope (3).

8. A test device for dropping a hose of an aerial refueling equipment as claimed in claim 7, characterized in that: The holes of the movable loading plate (4) and the fixed loading plate for passing the elastic rope (3) are located at the same relative position from the center.

9. A test method for dropping an aerial refueling equipment hose using a test device for dropping an aerial refueling equipment hose according to any one of claims 1 to 8, comprising the following steps: 1) Load calibration: After the fixed loading bracket (2) is fixed on the mounting base plate (1), the elastic rope (3) is passed through corresponding holes on the fixed loading plate and the movable loading plate (4), the movable loading plate (4) is stretched along the axial direction of the mounting base plate (1), the axial load generated by the elastic rope is measured by a tension sensor, and the length range of the elastic rope (3) that reaches a predetermined load range is recorded, thereby completing the load calibration of the elastic rope (3); 2) Load and install: After fixing the hose release mechanism of the aerial refueling equipment on the release mechanism bracket (5) by bolts, the hose release mechanism and the hose joint simulation part (6) are connected, and the movable loading plate (4) and the hose joint simulation part (6) are connected by the shaft pin (7), and the split pin (8) is used to prevent separation; the release mechanism bracket (5) is stretched along the axial direction of the installation base plate (1) so that the elastic rope (3) reaches the length range corresponding to the previously calibrated load; the elastic rope (3) is adjusted within the calibrated length range to align the hole position at the bottom of the release mechanism bracket (5) with the hole position on the installation base plate (1), and fixed by bolts; 3) Hose release test under vibration environment: The connected test device is placed as a whole on the horizontal slide table of the vibration test bench, the test device is fixed by installing the holes at the bottom of the base plate (1), and the vibration test bench is started. The hose release mechanism will bear the hose load and the vibration environment stress at the same time. When the output of the vibration test bench reaches a predetermined vibration load spectrum, the hose release mechanism is controlled to separate from the hose joint simulation part (6), and the elastic rope (3) drives the mobile loading plate (4) to restore to its original length under the elastic action, thus completing the release of the hose under the vibration environment; 4) Hose throwing test in low temperature environment: The connected test device is separated from the vibration test bench and placed in a low-temperature test box as a whole. The low-temperature test box is adjusted to a preset air environment temperature. The hose release mechanism will simultaneously bear the hose load and the low-temperature environment stress. When the temperature reaches the preset value, the hose release mechanism is controlled to separate from the hose joint simulation part (6). The elastic rope (3) drives the mobile loading plate (4) to restore to its original length under the elastic action, thereby completing the release of the hose in the low-temperature environment.

10. The method according to claim 9, characterized in that When the test device needs to change its axial direction to conduct a vibration test, the reversing bracket (9) is connected to the two ends of the bottom of the mounting base plate (1), and then the reversing bracket (9) is fixed on the vibration test bench, so that the mounting base plate (1) and the test device connected thereto are turned over 90 degrees as a whole, so as to conduct a test in the vertical direction.

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