Integral side-pull test equipment for box fairing of missile launching

Abstract

The application discloses a box-type fairing overall side-pulling test equipment for missile launching, which comprises a set of symmetrical top plate assemblies arranged at the bottom of a fairing device, the bottom of the top plate assembly is provided with a profile surface matched with the fairing profile surface of the fairing device, the inner wall of a fairing baffle of the fairing device is matched with the outer wall of one side of the top plate assembly, a hydraulic jack assembly is arranged between the outer walls of the other sides of the two top plate assemblies, the hydraulic jacks of the hydraulic jack assembly are clamped and fixed between the top plate assemblies, the top plate assemblies are simultaneously subjected to horizontal pressure, a plurality of strain sensors for detecting the force of the fairing baffle are arranged on the outer wall of the fairing baffle and along the fairing profile surface at intervals, a plurality of displacement sensors for detecting the deformation of the fairing baffle are arranged on the outer wall of the fairing baffle, and the strain sensors and the displacement sensors are electrically connected with a data collector. The application realizes the overall static load test of the fairing device, has high reliability of test scheme, reliable and stable test data, does not cause damage to non-metallic materials, has low test cost and easy-to-realize test conditions.

Description

Technical Field

[0001] This invention belongs to the field of product static load testing, specifically referring to the static load testing equipment for the side protective plate of the main control device of a box-type flow guide. Background Technology

[0002] Currently, static load tests for industrial and military products with load-bearing applications are mostly achieved through multi-channel coordinated loading control equipment for static fatigue testing. This testing equipment uses rigid pressure and can simulate static load tests under localized loading and single pressure conditions, making it suitable for static load tests on specific parts of the product. However, it requires the manufacture of compatible adapters, and the equipment itself is costly to use. A certain box-type flow deflector primarily guides the high-temperature exhaust gas flow during missile launch to the outside of the box, preventing damage to the interior. It consists of two main parts: a main flow deflector and a front flow deflector. The main flow deflector withstands the impact of the exhaust gas flow on the main body. The exhaust gas flow impacts the left and right side baffles on the upper part of the main body, and since the load-bearing parts are made of non-metallic materials, damage must be avoided during the test. The side-pull method of the testing equipment may cause some damage to the side baffles. Military manufacturers of flow deflectors generally use indirect methods such as finite element simulation analysis or localized static load tests for strength verification, ensuring the reliability of product strength with a large design safety factor. However, driven by the ever-increasing thrust of new missiles and the increasingly stringent requirements, the flow guide device must be designed with precision and its overall load-bearing capacity must be assessed through reliable overall static load tests. Summary of the Invention

[0003] In view of the problems existing in the background technology, the purpose of this invention is to provide an overall static load test equipment for a missile launch guide device with high reliability, low quality risk and low cost.

[0004] To achieve the above objectives, the present invention provides an integral side-tension test equipment for a box-type deflector used in missile launches, comprising a set of top plate assemblies symmetrically arranged at the bottom of the deflector device. The bottom of the top plate assembly has a profile that conforms to the deflector profile of the deflector device. The inner wall of the deflector device's baffle plate is fitted to one side of the outer wall of the top plate assembly, and a hydraulic jack assembly is provided between the other side walls of the two top plate assemblies. The hydraulic jacks of the hydraulic jack assembly clamp and fix between the top plate assemblies, simultaneously applying horizontal pressure to the side wall of the top plate assembly. Multiple strain sensors for detecting the force on the baffle plate are provided at intervals along the deflector profile on the outer wall of the baffle plate. Multiple displacement sensors for detecting the deformation of the baffle plate are also provided on the outer wall of the baffle plate. The strain sensors and displacement sensors are electrically connected to a data acquisition unit.

[0005] Preferably, a hydraulic jack is provided on each side of the crest of the guide surface.

[0006] Preferably, the two outer walls of the top plate assembly connected to the hydraulic jack are provided with blind holes to accommodate both ends of the hydraulic jack. In this way, the hydraulic jack is fixed between the top plate assemblies.

[0007] Preferably, the top plate assembly includes: two oppositely arranged side plates, and a plurality of connecting rods fixedly connected to the side plates at both ends; the top surface of the side plate is flush with the top surface of the baffle plate, and the bottom surface of the side plate is provided with a profile adapted to the flow guide profile; the plurality of connecting rods are arranged at intervals along the circumference of the side plate.

[0008] In a further preferred embodiment, the top plate assembly also includes a support rod, which is coaxial with the hydraulic jack, and both ends of the support rod are fixedly connected to the inner wall of the side plate.

[0009] Preferably, five strain sensors are provided, one of which is located on the outer wall of the baffle and at the top of the flow guide surface, two of which are symmetrically arranged on the outer wall of the baffle and at the waist of the flow guide surface, and two of which are symmetrically arranged on the outer wall of the baffle and at the bottom of the flow guide surface.

[0010] Preferably, at least four displacement sensors are provided, and the four displacement sensors are located in a straight line.

[0011] The beneficial effects of this invention are: it realizes the overall static load test of the flow guiding device; the test scheme has high reliability and the test data is reliable and stable; the product quality risk is low and it will not cause damage to non-metallic materials; the test cost is low and the test conditions are easy to achieve. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the flow guide;

[0013] Figure 2 This is a schematic diagram of the overall static load test of the flow guide of the present invention;

[0014] Figure 3 This is a front view schematic diagram of the top plate assembly of the present invention;

[0015] Figure 4 This is a top view schematic diagram of the top plate assembly of the present invention;

[0016] Figure 5 yes Figure 4 AA sectional view;

[0017] Figure 6 This is a schematic diagram of the jack assembly of the present invention;

[0018] Figure 7 This is a schematic diagram of the arrangement of stress test points in this invention. Detailed Implementation

[0019] The technical solutions (including preferred technical solutions) of the present invention will be further described in detail below with reference to the accompanying drawings and by way of listing some optional embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0020] like Figures 1 to 7 As shown, the overall side-tension test equipment for a box-type deflector for missile launch designed in this invention includes a set of top plate assemblies 2 symmetrically arranged at the bottom of the deflector device 1. The bottom of the top plate assembly 2 is provided with a profile 2.1 that fits with the deflector profile 1.1 of the deflector device. The outer wall of the deflector device baffle 1.2 is fitted with one side outer wall of the top plate assembly 2, and a hydraulic jack assembly 3 is provided between the other side walls of the two top plate assemblies 2. The hydraulic jacks 3.1 of the hydraulic jack assembly 3 are clamped and fixed between the top plate assemblies 2, and apply horizontal pressure to the side wall of the top plate assembly 2 simultaneously. Multiple strain sensors for detecting the force on the baffle 1.2 are provided at intervals along the deflector profile 1.1 on the outer wall of the baffle 1.2. Multiple displacement sensors for detecting the deformation of the baffle 1.2 are also provided on the outer wall of the baffle 1.2. The strain sensors and displacement sensors are electrically connected to a data acquisition unit.

[0021] A certain type of flow guiding device 1 is a box-type launch flow guiding device structure, such as Figure 1 As shown, the forward projection dimensions are 1052×2954mm, the total height is 2500mm, and the height of the baffle 1.2 is 570mm. The two baffles are required to have a load-bearing capacity of approximately 10t (perpendicular to the baffle surface), and the non-metallic surfaces must not be damaged during the test.

[0022] In some optional embodiments of the present invention, the top plate assembly 2 includes: two oppositely arranged side plates 2.2, and a plurality of connecting rods 2.3 fixedly connected to the side plates 2.2 at both ends; the top surface of the side plate 2.2 is flush with the top surface of the baffle plate 1.2, and the bottom surface of the side plate 2.2 is provided with a profile 2.1 adapted to the flow guide profile 1.1; the plurality of connecting rods 2.3 are arranged at intervals along the circumference of the side plate 2.2.

[0023] In some optional embodiments of the present invention, in order to further increase the strength of the top plate assembly 2 and obtain better results, the top plate assembly 2 further includes a support rod 2.4, which is coaxial with the hydraulic jack 3.1, and both ends of the support rod 2.4 are fixedly connected to the inner wall of the side plate 2.2.

[0024] In some optional embodiments of the present invention, the two outer walls of the top plate assembly 2 connected to the hydraulic jack 3.1 are provided with blind holes 2.5 for accommodating the two ends of the hydraulic jack 3.1, so that the hydraulic jack 3.1 is fixed between the top plate assemblies 2.

[0025] Preferably, the strut 2.4 is coaxial with the blind hole 2.5. This allows for effective torque transmission.

[0026] To ensure that the bottom of the top plate assembly 2 fits snugly against the flow guide device 1, the bottom of the top plate assembly 1 is made into an arc-shaped surface. That is, the bottom surface of the side plate 2.2 is a surface 2.1 that is compatible with the flow guide surface 1.1, so that it fits snugly against the bottom of the flow guide device. The top plate assembly 2 is designed and manufactured with the following specifications: length 900mm, width 450mm, and thickness 400mm.

[0027] In this embodiment, two top plate assemblies 2 are assembled, one of which is attached to the left baffle 1.2 and the other to the right baffle 1.2. Both top plate assemblies 2 are attached to the bottom of the flow guiding device 1.

[0028] In some optional embodiments of the present invention, the hydraulic jack assembly 3 includes a hydraulic jack 3.1, a pressure gauge 3.2 displaying the current pressure of the hydraulic jack 3.1, and a manual pump 3.3 for applying pressure to the hydraulic jack 3.1. In this embodiment, the hydraulic jack 3.1 is a manual hydraulic jack.

[0029] Preferably, a hydraulic jack 3.1 is provided on each side of the crest of the guide surface 1.1.

[0030] The pressure application process is controlled by a manual hydraulic jack. The pressure P of the manual hydraulic jack, the contact area S of the top plate assembly, and the force F on the left and right baffles satisfy the calculation formula: P = F / S, where P: the pressure displayed by the manual hydraulic jack; F: the load on the left and right baffles; and S: the effective area of ​​the hydraulic jack.

[0031] To meet the 10t loading force requirement, a hydraulic jack with the following parameters was selected: maximum output load 10t, effective cylinder area stroke 100mm, and body height 150mm. The test used a manual pump to control the jack.

[0032] Assemble two hydraulic jacks 3.1 between the top plate assembly 2. Place the hydraulic jacks 3.1 in the blind hole 2.5 with diameter D on the surface of the top plate assembly 2, and adjust the hydraulic jacks 3.1 to keep them under pressure.

[0033] In some optional embodiments of the present invention, five strain sensors are provided, one of which is located on the outer wall of the baffle 1.2 and is the top of the flow guide surface 1.1, two of which are symmetrically arranged on the outer wall of the baffle 1.2 and are the waist of the flow guide surface 1.1, and two of which are symmetrically arranged on the outer wall of the baffle 1.2 and are the bottom of the flow guide surface 1.1.

[0034] by Figure 3Based on the points determined in the distribution diagram, five stress test points T16 to T20 are selected on the outer wall of the metal panel—baffle 1.2, and strain sensors are arranged at these five stress test points.

[0035] At least four displacement sensors are provided on the outer wall of the baffle 1.2. The four displacement sensors are located in a straight line, but they cannot interfere with the strain sensors.

[0036] Place the flow guide device 1 on the platform and place the top plate assembly 2 at the bottom of the flow guide device 1, with the top plate assembly 2 fitting against the bottom and side plates of the flow guide device 1;

[0037] Place two hydraulic jacks 3.1 between the top plate assembly 2;

[0038] The operator uses the manual pump 3.3 of the hydraulic jack 3.1 to apply pressure and directly observes the pressure gauge 3.2 of the manual pump. When a certain pressure is reached, the load on the left and right baffles 1.2 of the flow guiding device 2 is completed.

[0039] Before the test, the manual pump was manually commissioned, and the load during commissioning did not exceed 30% of the rated load. The test was conducted with 5% of the rated load as the zero-load state. The manual pump was calibrated and zeroed under the zero-load state, and data acquisition began.

[0040] To ensure data reliability, three full-load tests were conducted. The load was increased in stages, with the load increments of 10% of the rated load value to the maximum load (10T). After each stage of load loading was completed, the pressure was held for 15 seconds after the feedback force stabilized, and test data was collected. After no abnormalities occurred, the load was continued, and the test data was collected after holding the maximum load for 30 seconds.

[0041] It will be readily understood by those skilled in the art that the above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, combinations, substitutions, improvements, etc., made under the spirit and principles of the present invention are included within the protection scope of the present invention.

Claims

1. A test apparatus for the overall side-pull test of a box-type deflector for missile launch, characterized in that: The device includes a set of top plate assemblies symmetrically arranged at the bottom of the flow guiding device. The bottom of the top plate assembly has a profile that fits the flow guiding profile of the flow guiding device. The inner wall of the flow guiding device baffle plate fits against one outer wall of the top plate assembly. A hydraulic jack assembly is located between the other side walls of the two top plate assemblies. The hydraulic jacks of the hydraulic jack assembly clamp and fix between the top plate assemblies, simultaneously applying horizontal pressure to the side wall of the top plate assembly. Multiple strain sensors for detecting the force on the baffle plate are spaced along the flow guiding profile on the outer wall of the baffle plate. Multiple displacement sensors for detecting the deformation of the baffle plate are also provided on the outer wall of the baffle plate. The strain sensors and displacement sensors are electrically connected to a data acquisition unit. A hydraulic jack is provided on each side of the guide profile crest; the top plate assembly includes: two oppositely arranged side plates, and multiple connecting rods fixedly connected to the side plates at both ends; the top surface of the side plate is flush with the top surface of the baffle plate, and the bottom surface of the side plate is provided with a profile adapted to the guide profile; the multiple connecting rods are arranged at intervals along the circumference of the side plate; the top plate assembly also includes a support rod, the support rod is coaxial with the hydraulic jack, and the two ends of the support rod are fixedly connected to the inner wall of the side plate.

2. The overall side-pull test equipment for a box-type deflector for missile launch according to claim 1, characterized in that: The top plate assembly has blind holes on its two outer walls that connect to the hydraulic jack, which are used to accommodate the two ends of the hydraulic jack.

3. The overall side-pull test equipment for a box-type deflector for missile launch according to claim 1, characterized in that: Five strain sensors are provided, one of which is located on the inner wall of the baffle and at the top of the flow guide surface, two of which are symmetrically arranged on the outer wall of the baffle and at the waist of the flow guide surface, and two of which are symmetrically arranged on the outer wall of the baffle and at the bottom of the flow guide surface.

4. The overall side-pull test equipment for a box-type deflector for missile launch according to claim 1, characterized in that: At least four displacement sensors are provided, and the four displacement sensors are located in a straight line.

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