Actuating unit fixing device

Abstract

The utility model discloses an actuating unit fixing device, and relates to the technical field of suspension launching test devices. The utility model provides an ejection actuating unit fixing device with variable rigidity, which comprises a fixing seat, a supporting seat, a first rigidity adjusting plate and a second rigidity adjusting plate, so that the vertical rigidity and the pitching rigidity under different working conditions can be simulated more truly, and the confidence coefficient of a ground throwing test is improved.

Description

Technical Field

[0001] The utility model relates to the technology of suspension launch test devices, and particularly to a fixing device for an actuating unit. Background Art

[0002] When a suspension launch device performs a dropping task, the separation parameters of its suspended object will directly affect the safety and effectiveness of the carrier aircraft. Therefore, a ground simulation dropping test must be carried out before in-air hanging flight. However, during the ground simulation dropping test, the separation parameters of the suspended object often fail to meet the requirements. To explore the influencing factors, it is necessary to test the core components of the suspension launch device. As one of the core components of the suspension launch device, the ejection actuating unit can push the 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 conduct a separate assessment on it.

[0003] For the ejection actuating unit, when conducting a ground simulation dropping test on it, it is necessary to simulate the real installation interface and mechanical environment as much as possible to improve the confidence level of the test results. This requires simulating the vertical stiffness and pitch stiffness of the installation interface of the ejection actuating unit. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a fixing device for an ejection actuating unit with variable stiffness, so as to more realistically simulate the vertical stiffness and pitch stiffness under different working conditions and improve the confidence level of the ground dropping test.

[0005] In view of this, according to one aspect of the embodiments of the utility model, a fixing device for an actuating unit is provided, including: a fixing base 1, a support base 2, a first stiffness adjustment plate 3, and a second stiffness adjustment plate 4; wherein the fixing base 1 includes a bottom plate with an L-shaped cross-section and a rib plate welded to the back of the bottom plate, the support base 2 is ladder-shaped, one long side of which is detachably connected to the front of the bottom plate, and the other long side is detachably connected to the back of the first stiffness adjustment plate 3. The front of the first stiffness adjustment plate 3 is detachably connected to the back of the second stiffness adjustment plate 4, and the front of the second stiffness adjustment plate 4 is connected to the actuating unit 5. Two groups of support bases 2 are respectively arranged at both ends of the fixing base 1, each connecting a first stiffness adjustment plate 3, and the two first stiffness adjustment plates 3 are simultaneously connected to the same second stiffness adjustment plate 4. Different thicknesses and quantities of the second stiffness adjustment plate 4 change the vertical stiffness of the actuating unit 5, and the relative distance between the two first stiffness adjustment plates 3 is adjustable.

[0006] Optionally, the support base 2, the first stiffness adjustment plate 3, and the second stiffness adjustment plate 4 are connected by bolts.

[0007] Optionally, the bolt connection holes of the support base 2, the first stiffness adjustment plate 3, and the second stiffness adjustment plate 4 are long holes.

[0008] Optionally, one of the two first stiffness adjustment plates 3 is made of a rigid material and the other is made of an elastic material.

[0009] Optionally, two sets of support seats 2 are symmetrically arranged at both ends of the fixed seat 1.

[0010] Optionally, the acting force of the actuating unit 5 is perpendicular to the front surface of the second stiffness adjustment plate 4.

[0011] Optionally, the front surface of the second stiffness adjustment plate 4 is connected to the actuating unit 5, and the connection point is located at the central position of the second stiffness adjustment plate 4.

[0012] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0013] 1. By using the "L"-shaped plate and the fixed seat 1 with three rib plates welded to the side plate, it can well withstand the axial impact force generated by catapulting.

[0014] 2. By using two ladder-shaped structure support seats 2 that are symmetric about the side plate of the base, the axial catapulting overload can be effectively transmitted to the fixed seat 1.

[0015] 3. The position of the second stiffness adjustment plate 4 remains fixed. By changing the thickness and number of the second stiffness adjustment plates 4, the vertical stiffness can be changed. Increasing the number and thickness of the second stiffness adjustment plates 4 can increase the vertical stiffness. Similarly, reducing the number and thickness of the plates can reduce the vertical stiffness.

[0016] 4. The vertical stiffness of the catapulting actuating unit 5 can be adjusted by the distance between the two first stiffness adjustment plates 3.

[0017] 5. One end of the stiffness adjustment plate 4 is padded with a steel plate first stiffness adjustment plate 3, and the other end is padded with a rubber first stiffness adjustment plate 3. The end padded with the steel plate is fixedly constrained. In this way, the second stiffness adjustment plate 4 becomes a cantilever beam, and the rubber can buffer and protect the bending of the second stiffness adjustment plate 4 caused by the impact. At the same time, by changing the thickness of the second stiffness adjustment plate 4, the pitching stiffness can be changed, that is, increasing the number and thickness of the second stiffness adjustment plates 4 can increase the pitching stiffness, and reducing the number and thickness of the plates can reduce the pitching stiffness.

[0018] 6. At the same time, the pitching stiffness of the catapulting actuating unit 5 can be adjusted by adjusting the distance between the first stiffness adjustment plates 3. Description of the Drawings

[0019] Figure 1-2 It is a schematic structural diagram of an actuating unit fixing device according to an embodiment of the present application.

[0020] Description of the Reference Numerals:

[0021] 1 - Fixed seat, 2 - Support seat, 3 - First stiffness adjustment plate, 4 - Second stiffness adjustment plate, 5 - Actuating unit. Detailed implementation manner

[0022] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying 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. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0023] A fixing device for an actuating unit provided by the present invention, as Figure 1-2 shown, includes: a fixed seat 1, a support seat 2, a first stiffness adjustment plate 3 and a second stiffness adjustment plate 4; wherein the fixed seat 1 includes a bottom plate with an L-shaped cross section and a rib plate welded to the back of the bottom plate, which can well withstand the axial impact force generated by ejection. The support seat 2 is in the shape of a ladder and can effectively transmit the axial ejection overload to the fixed seat 1. One long side of it is detachably connected to the front of the bottom plate, and the other long side is detachably connected to the back of the first stiffness adjustment plate 3. The front of the first stiffness adjustment plate 3 is detachably connected to the back of the second stiffness adjustment plate 4, and the front of the second stiffness adjustment plate 4 is connected to the actuating unit 5. Two groups of support seats 2 are respectively arranged at both ends of the fixed seat 1, each connecting a first stiffness adjustment plate 3, and the two first stiffness adjustment plates 3 are simultaneously connected to the same second stiffness adjustment plate 4. The different thicknesses and quantities of the second stiffness adjustment plates 4 change the vertical stiffness of the actuating unit 5, and the relative distance between the two first stiffness adjustment plates 3 is adjustable. It is used to simulate the vertical stiffness under specific working conditions and can also simulate the vertical stiffness under different working conditions, that is, the vertical stiffness is changed by changing the thickness and quantity of the stiffness adjustment plate 4. Increasing the quantity and thickness of the stiffness adjustment plate 4 can increase the vertical stiffness. Similarly, reducing the number and thickness of the plates can also reduce the vertical stiffness. The vertical stiffness of the ejection actuating unit can be adjusted by the distance between the two stiffness adjustment plates 3.

[0024] Furthermore, the support seat 2, the first stiffness adjustment plate 3 and the second stiffness adjustment plate 4 are connected by bolts, and can also be connected by other means such as anchor bolts.

[0025] Furthermore, the bolt connection holes of the support seat 2, the first stiffness adjustment plate 3 and the second stiffness adjustment plate 4 are long holes for adjusting the distance between the two stiffness adjustment plates 3.

[0026] Furthermore, one of the two first stiffness adjustment plates 3 is made of a rigid material and the other is made of an elastic material. For example, the materials of the two first stiffness adjustment plates 3 are steel plate and rubber respectively. One end of the steel plate is fixedly constrained, so that the stiffness adjustment plate 4 becomes a cantilever beam, and the rubber can buffer and protect the bending of the stiffness adjustment plate 4 caused by impact. At the same time, by changing the thickness of the stiffness adjustment plate 4, the pitch stiffness can be changed. That is, increasing the number and thickness of the stiffness adjustment plates 4 can increase the pitch stiffness, and reducing the number and thickness of the plates can reduce the pitch stiffness.

[0027] Furthermore, the two sets of support seats 2 are symmetrically arranged at both ends of the fixed seat 1, and the force distribution is more uniform, which is convenient for calculation and monitoring.

[0028] Furthermore, the acting force of the actuating unit 5 is perpendicular to the front surface of the second stiffness adjustment plate 4, and the force distribution is more uniform, which is convenient for calculation and monitoring.

[0029] Furthermore, the front surface of the second stiffness adjustment plate 4 is connected to the actuating unit 5, and the connection point is located at the center position of the second stiffness adjustment plate 4, so that the force distribution is more uniform, which is convenient for calculation and monitoring.

[0030] Embodiment

[0031] Combined with the attached Figure 1-2 , the variable stiffness ejection actuating unit fixing device of the present utility model is composed of a fixed seat 1, a support seat 2, a first stiffness adjustment plate 3, a second stiffness adjustment plate 4 and an ejection actuating unit 5.

[0032] State before work: The fixed seat 1 adopts an "L" - shaped plate, and three stiffening plates are welded on the side plate. Six round holes are arranged on the side plate and are symmetrical with the center line of the side plate; Two support seats 2 symmetrical about the center line of the base side plate are installed on the side plate of the fixed seat 1. Six round holes corresponding to the round holes of the fixed seat 1 are arranged on one side surface of the side plate of the support seat 2, and six round holes are also arranged on the other side surface; Two first stiffness adjustment plates 3 symmetrical about the axis and maintaining a certain distance are respectively installed on the two support seats 2 through six round holes, and long round holes are arranged on the first stiffness adjustment plates 3; The two first stiffness adjustment plates 3 are respectively connected to the second stiffness adjustment plate 4 provided with corresponding oval holes through oval holes, and the second stiffness adjustment plate 4 coincides with the center line of the fixed seat 1.

[0033] As Figure 1As shown, further, the fixing device of the ejection actuator unit with variable stiffness adopts an "L"-shaped plate, and the fixing seat 1 with three rib plates welded on the side plate can well withstand the axial impact force generated by ejection. By using two support seats 2 symmetric about the center line of the base side plate, the axial ejection overload can be effectively transmitted to the base. Since the position of the second stiffness adjustment plate 4 is fixed and presents an axisymmetric distribution centered on the actuator unit, the vertical stiffness can be changed by changing the thickness and number of the stiffness adjustment plates 4. Increasing the number and thickness of the stiffness adjustment plates 4 can increase the vertical stiffness. Similarly, reducing the number and thickness of the plates can also reduce the vertical stiffness. At the same time, the vertical stiffness of the ejection actuator unit can be adjusted by adjusting the distance between the stiffness adjustment plates 3.

[0034] As Figure 2 As shown, further, a steel plate is padded at one end of the second stiffness adjustment plate 4 and a rubber is padded at the other end. The end padded with the steel plate is fixed, and the stiffness adjustment plate 4 becomes a cantilever beam. The rubber can buffer and protect the bending of the stiffness adjustment plate 4 caused by the impact. At this time, the pitching stiffness is changed by changing the thickness of the stiffness adjustment plate 4. That is, increasing the number and thickness of the cantilever beam plates can increase the pitching stiffness, and reducing the number and thickness of the plates can also reduce the pitching stiffness. At the same time, the pitching stiffness of the ejection actuator unit 5 can be adjusted by adjusting the distance between the stiffness adjustment plates 3.

[0035] The above is only a specific embodiment of the present invention, and the present invention is described in detail. The parts not described in detail are conventional technologies. However, the protection scope of the present invention 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 invention should be covered by the protection scope of the present invention. The protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. An actuating unit fixing device, characterized in that: include: A fixing seat (1), a supporting seat (2), a first stiffness adjustment plate (3) and a second stiffness adjustment plate (4); wherein the fixing seat (1) comprises a bottom plate with an L-shaped cross section and a rib plate welded to the back of the bottom plate; the supporting seat (2) is in a ladder shape, the long side of one side of the supporting seat (2) is detachably connected to the front of the bottom plate, the long side of the other side is detachably connected to the back of the first stiffness adjustment plate (3); the front of the first stiffness adjustment plate (3) is detachably connected to the back of the second stiffness adjustment plate (4); the front of the second stiffness adjustment plate (4) is used to be connected to an actuating unit (5); two groups of supporting seats (2) are respectively arranged at two ends of the fixing seat (1), each connected to a first stiffness adjustment plate (3); the two first stiffness adjustment plates (3) are simultaneously connected to the same second stiffness adjustment plate (4); different thicknesses and numbers of the second stiffness adjustment plates (4) change the vertical stiffness of the actuating unit (5); and the relative distance between the two first stiffness adjustment plates (3) is adjustable.

2. The device according to claim 1, characterized in that The support seat (2), the first rigidity adjustment plate (3) and the second rigidity adjustment plate (4) are connected by bolts.

3. The device according to claim 2, characterized in that The bolt connection holes of the support seat (2), the first rigidity adjustment plate (3) and the second rigidity adjustment plate (4) are elongated holes.

4. The device according to claim 1, characterized in that One of the two first rigidity adjustment plates (3) is made of a rigid material, and the other is made of an elastic material.

5. The device according to claim 1, characterized in that Two groups of support seats (2) are symmetrically arranged at two ends of the fixing seat (1).

6. The device according to claim 1, characterized in that The acting force of the actuating unit (5) is perpendicular to the front surface of the second stiffness adjustment plate (4).

7. The device according to claim 1, characterized in that The front side of the second stiffness adjustment plate (4) is connected to the actuating unit (5), and the connection point is located at the center of the second stiffness adjustment plate (4).

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