Ejection load simulation device

Abstract

The utility model discloses an ejection load simulation device, and relates to the technical field of simulation experiment machinery. The device is composed of a linear guide rail, a first simulation load frame, a load steel plate, a fastening load stud, a return block, a second simulation load frame, a force sensor and an acceleration sensor. The device is used for simulating the dynamic characteristics of a load after the load is acted by an ejection actuation unit in the ejection test process of the ejection actuation unit. Simulation of ejection loads with different weights is realized by selecting a plurality of load steel plates with different specifications, and meanwhile, a force sensor and an acceleration sensor are used for measuring ejection force and simulating acceleration of the loads in real time, so that dynamic characteristics of the ejection actuation unit are evaluated, and technical reference is provided for improved design of the ejection actuation unit.

Description

Technical Field

[0001] The utility model belongs to the technical field of simulation experiment machinery, and particularly relates to an ejection load simulation device. Background Art

[0002] As one of the core components of a suspension launch device, an ejection actuator unit can push a suspended object to safely separate the carrier aircraft, and its dynamic characteristics directly affect the separation parameters of the suspended object. Therefore, it is necessary to test the dynamic characteristics of the ejection actuator unit. When conducting an ejection actuator unit drop test on the ground, it is necessary not only to simulate the mass characteristics of the ejection load, but also to obtain key system parameters such as the ejection force, ejection overload, and movement speed received by the ejection load. Therefore, a general-purpose and weight-adjustable ejection load simulation device is required. Summary of the Utility Model

[0003] The purpose of the present utility model is to provide an ejection load simulation device to solve the above problems.

[0004] In view of this, according to one aspect of an embodiment of the present utility model, there is provided an ejection load simulation device, including: a linear guide rail 1, a first simulation load rack 2, a load steel plate 3, a fastening load stud 4, a return block 5, a second simulation load rack 6, an acceleration sensor 7, and a force sensor 8; wherein, the first simulation load rack 2 and the second simulation load rack 6 are installed on the linear guide rail 1, and the first simulation load rack 2 and the second simulation load rack 6 can move freely along the linear guide rail 1; the load steel plate 3 is pressed on the first simulation load rack 2 and the second simulation load rack 6 through the fastening load stud 4; the return block 5 is installed at the bottom of the second simulation load rack 6; the force sensor 8 is installed on the top of the simulation load steel plate 3; the acceleration sensor 7 is installed on the front end face of the first simulation load rack 2 or the second simulation load rack 6.

[0005] Optionally, the first simulation load rack 2 and the second simulation load rack 6 are connected by sliding friction with the linear guide rail 1 or are connected by rolling through pulleys.

[0006] Optionally, the first simulation load rack 2 is composed of a top plate and a wedge body welded together, wherein the wedge body is symmetric about the midline of the top plate, and the width of the wedge body is less than the width of the linear guide rail 1.

[0007] Optionally, the second simulation load rack 6 includes a second top plate 61 and a square-shaped stiffening rib plate 62, and the square-shaped stiffening rib plate 62 is symmetric about the midline of the second top plate 61.

[0008] Optionally, the return block 5 adopts an "inverted L" shaped strip plate, the top side is installed at the bottom of the second simulation load rack 6, and the bottom side is used to bear the reset force.

[0009] Optionally, different thicknesses and quantities of the load steel plates 3 correspond to different load forces.

[0010] Optionally, when the simulated load is greater than the first preset threshold, the load steel plate 3 is installed on the first simulated load rack 2 and the second simulated load rack 6 to complete the simulation of catapulting a large load; when the simulated load is less than the second preset threshold, the load steel plate 3 is installed on the second simulated load rack 6 to complete the simulation of catapulting a small load.

[0011] This device is used to simulate the dynamic characteristics of a load after being affected by a catapulting actuating unit during the catapulting actuating unit delivery test. By selecting multiple load steel plates of different specifications, the simulation of catapulting loads of different weights is achieved. At the same time, a force sensor and an acceleration sensor are used to measure the catapulting force and the acceleration of the simulated load in real time, so as to evaluate the dynamic characteristics of the catapulting actuating unit and provide a technical reference for its improved design. Description of the Drawings

[0012] Figure 1 Schematic diagram of the state / structure when catapulting a large load with a simulated load;

[0013] Figure 2 Schematic diagram of the state / structure when catapulting a small load with a simulated load;

[0014] Figure 3 Structural diagram of the first simulated load rack;

[0015] Figure 4 Structural diagram of the second simulated load rack.

[0016] Description of the reference numerals in the drawings:

[0017] 1 - linear guide rail, 2 - first simulated load rack, 3 - load steel plate, 4 - fastening load stud, 5 - return block, 6 - second simulated load rack, 7 - acceleration sensor, 8 - force sensor, 61 - second top plate, 62 - square-shaped stiffening rib plate, 21 - first top plate, 22 - wedge-shaped body. Detailed implementation manners

[0018] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0019] As Figures 1-2As shown in the figure, an ejection load simulation device provided by the utility model includes: a linear guide rail 1, a first simulation load rack 2, a load steel plate 3, a fastening load stud 4, a return block 5, a second simulation load rack 6, an acceleration sensor 7, and a force sensor 8; wherein, the first simulation load rack 2 and the second simulation load rack 6 are installed on the linear guide rail 1, and the first simulation load rack 2 and the second simulation load rack 6 can move freely along the linear guide rail 1; the load steel plate 3 is pressed on the first simulation load rack 2 and the second simulation load rack 6 through the fastening load stud 4; the return block 5 is installed at the bottom of the second simulation load rack 6; the force sensor 8 is installed on the top of the simulation load steel plate 3; the acceleration sensor 7 is installed on the front end face of the first simulation load rack 2 or the second simulation load rack 6. The acceleration sensor 7 is used to measure the acceleration of the simulation load in real time.

[0020] Further, the first simulation load rack 2 and the second simulation load rack 6 are connected with the linear guide rail 1 by sliding friction or rolling connection through pulleys.

[0021] Further, as Figure 3 shown, the first simulation load rack 2 is composed of a first top plate 21 and a wedge body 22 welded together, wherein the wedge body 22 is symmetric about the midline of the first top plate 21, and the width of the wedge body 22 is smaller than the width of the linear guide rail 1. To strengthen the support for the load steel plate 3.

[0022] Further, the second simulation load rack 6 includes a second top plate 61 and a square-shaped stiffening rib plate 62, and the square-shaped stiffening rib plate 62 is symmetric about the midline of the second top plate 61. To strengthen the support for the load steel plate 3 and can well withstand the axial impact force generated by ejection.

[0023] Further, the return block 5 adopts an "inverted L" shaped strip plate, the top side is installed at the bottom of the second simulation load rack 6, and the bottom side is used to bear the reset force. After ejection and release, the return block 5 receives the reset force and drives the simulation load device back to the initial position. The force sensor 8 is used to measure the ejection force in real time. When simulating a large load, the force sensor 8 is installed on the front end face of the first simulation load rack 2; when simulating a small load, the force sensor 8 is installed on the front end face of the second simulation load rack 6.

[0024] Further, different thicknesses and quantities of the load steel plates 3 correspond to different load forces. It is composed of a variety of different sizes and various thicknesses of steel plates. The weight of the ejection load is simulated and realized by customizing special load steel plates 3 or selecting multiple load steel plates 3 with different specifications.

[0025] Further, when the simulated load is greater than the first preset threshold, the load steel plate 3 is installed on the first simulation load rack 2 and the second simulation load rack 6 to complete the simulation of ejecting a large load; when the simulated load is less than the second preset threshold, the load steel plate 3 is installed on the second simulation load rack 6 to complete the simulation of ejecting a small load.

[0026] Before catapult launch, according to the size of the simulated load, multiple load steel plates 3 of different specifications are selected. When simulating a large load, the load steel plate 3 is installed on the first simulated load rack and the second simulated load rack 6 through the fastening load stud 4, and the force sensor 8 is installed on the front end face of the first simulated load rack 2; when simulating a small load, the load steel plate 3 is installed on the second simulated load rack 6 through the fastening load stud 4, and the force sensor 8 is installed on the front end face of the second simulated load rack 6. The acceleration sensor 7 is installed on the simulated load steel plate 3.

[0027] During catapult launch, under the action of the catapult actuation unit, the simulated load accelerates, and at the same time, the catapult force and acceleration received by the simulated load are measured.

[0028] After catapult launch, the return block 5 is subjected to a restoring force, driving the simulated load back to the initial position.

[0029] Embodiment

[0030] The device consists of a linear guide rail 1, a first simulated load rack 2, a load steel plate 3, a fastening load stud 4, a return block 5, a second simulated load rack 6, a force sensor 8, and an acceleration sensor 7. The first simulated load rack 2 and the second simulated load rack 6 are installed on the linear guide rail 1 and can move freely along the direction of the slide rail. The simulated load steel plate 3 is installed on the first simulated load rack 2 and the second simulated load rack 6 and is firmly fixed through the fastening load stud 4. The adjustable load steel plate 3 is composed of steel plates of two different sizes and multiple thicknesses. The weight of the catapult load is simulated by selecting multiple load steel plates 3 of different specifications. When simulating a large load, the load steel plate 3 is installed on the first simulated load rack and the second simulated load rack 6 to complete the simulation of the catapult load; when simulating a small load, the load steel plate 3 is installed on the second simulated load rack 6 to complete the simulation of the catapult load. The return block 5 is in the shape of an "L" - shaped strip plate, with one side installed at the bottom of the second simulated load rack 6. After catapult launch, the return block 5 is subjected to a restoring force, driving the simulated load back to the initial position. The force sensor 8 is installed on the front end face of the first simulated load rack 2 or the second simulated load rack 6, and the acceleration sensor 7 is installed on the simulated load steel plate 3 for real - time measurement of the catapult force and the acceleration of the simulated load.

[0031] The device is used to simulate the dynamic characteristics of the load after being acted upon by the catapult actuation unit during the catapult actuation unit launch test. By selecting multiple load steel plates of different specifications, different - weight catapult loads are simulated. At the same time, the catapult force and the acceleration of the simulated load are measured in real - time using the force sensor and the acceleration sensor, so as to evaluate the dynamic characteristics of the catapult actuation unit and provide a technical reference for its improved design.

[0032] The above are only specific embodiments of the present utility model. The present utility model has been described in detail, and the unelaborated parts are conventional technologies. However, the protection scope of the present utility model is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed by the present utility model should be covered within the protection scope of the present utility model. The protection scope of the present utility model shall be subject to the protection scope of the said claims.

Claims

1. A catapult load simulation device, characterized in that, Including: Linear guide rail (1), first simulated load rack (2), load steel plate (3), fastening load stud (4), return block (5), second simulated load rack (6), acceleration sensor (7) and force sensor (8); wherein, the first simulated load rack (2) and the second simulated load rack (6) are installed on the linear guide rail (1), and the first simulated load rack (2) and the second simulated load rack (6) can move freely along the linear guide rail (1); the load steel plate (3) is crimped on the first simulated load rack (2) and the second simulated load rack (6) through the fastening load stud (4); the return block (5) is installed at the bottom of the second simulated load rack (6); the force sensor (8) is installed on the top of the simulated load steel plate (3); the acceleration sensor (7) is installed on the front end face of the first simulated load rack (2) or the second simulated load rack (6).

2. The device according to claim 1, characterized in that, The first simulated load rack (2) and the second simulated load rack (6) are connected with the linear guide rail (1) by sliding friction or rolling connection through pulleys.

3. The device according to claim 2, wherein, The first simulated load rack (2) is composed of a first top plate (21) and a wedge body (22) welded together, wherein the wedge body (22) is symmetric about the midline of the first top plate (21), and the width of the wedge body (22) is smaller than the width of the linear guide rail (1).

4. The device according to claim 1, characterized in that, The second simulated load rack (6) includes a second top plate (61) and a square-shaped stiffening rib plate (62), and the square-shaped stiffening rib plate (62) is symmetric about the midline of the second top plate (61).

5. The device according to claim 1, characterized in that, The return block (5) adopts an "inverted L" shaped strip plate, with the top edge installed at the bottom of the second simulated load rack (6), and the bottom edge used to bear the reset force.

6. The device according to claim 1, characterized in that Load steel plates (3) with different thicknesses and quantities correspond to different load forces.

7. The device according to claim 1, characterized in that, When the simulated load is greater than the first preset threshold, the load steel plate (3) is installed on the first simulated load rack (2) and the second simulated load rack (6) to complete the simulation of catapulting a large load; when the simulated load is less than the second preset threshold, the load steel plate (3) is installed on the second simulated load rack (6) to complete the simulation of catapulting a small load.

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