Novel strapdown navigation part test fixture

Abstract

The utility model discloses a novel strapdown navigation part test fixture, which comprises a test fixture mechanism, the test fixture mechanism comprises a first limiting block, a second limiting block and a locking block, the first limiting block is arranged on one side of the second limiting block, and one end and the other end of the upper end of the first limiting block and the other end of the upper end of the second limiting block are respectively provided with a first sliding rail and a second sliding rail in an attached mode. A support plate I and a support plate II are respectively attached to one side and the other side of the middle positions of the upper ends of the slide rail I and the slide rail II; the sliding anti-collision mechanism comprises anti-collision rubber strips and supporting columns, the anti-collision rubber strips are symmetrically bonded to the middles of one sides of the first supporting plate and the second supporting plate, the middles of the inner sides of the first supporting plate and the second supporting plate are symmetrically sleeved with the supporting columns, and a first magnetic strip and a second magnetic strip are fixed to one ends of the supporting columns respectively. According to the utility model, the test positioning of strapdown navigation component structures with multiple sizes can be satisfied, and the probability of collision between the structures during repeated disassembly and assembly is avoided, so that the damage cost is reduced.

Description

Technical Field

[0001] This utility model relates to the field of strapdown navigation component testing technology, specifically a novel strapdown navigation component testing fixture. Background Technology

[0002] Strapdown navigation systems (SINS) provide aircraft with real-time information such as heading, attitude angles, position, and velocity, making them one of the most critical pieces of equipment for flight safety. Before installation, SINS require calibration and testing in a laboratory. This testing involves mounting the SINS on a dual-axis or tri-axis turntable using test fixtures. However, because different SINS models have different dimensions, dedicated test fixtures must be designed for each model. Furthermore, different test fixtures are required when testing different SINS on the same dual-axis or tri-axis turntable. This process involves repeated disassembly and reassembly of the fixtures, which can easily cause collisions between the fixtures and the high-precision turntable. Since both are metal, prolonged use can damage the high-precision turntable, affecting its accuracy. Moreover, designing dedicated test fixtures for each SINS model increases design costs and hinders cost reduction and efficiency improvement. Therefore, a test fixture that addresses these drawbacks is needed to improve performance. Utility Model Content

[0003] The purpose of this utility model is to provide a novel test fixture for strapdown navigation components, in order to solve the problem mentioned in the background art, that since different models of strapdown navigation components have different dimensions, in practice, it is necessary to design special test fixtures for different models of strapdown navigation components, which can easily cause damage to the structure due to repeated disassembly and assembly, thus increasing costs.

[0004] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0005] This utility model is a novel test fixture for strapdown navigation components, comprising:

[0006] The test fixture mechanism includes a limiting block one, a limiting block two, and a locking block. The limiting block one is arranged on one side of the limiting block two, and the upper ends of the limiting block one and the limiting block two are respectively attached to slide rail one and slide rail two. The upper middle positions of the slide rail one and the slide rail two are respectively attached to one side and the supporting plate one and the supporting plate two. Two sets of locking blocks are symmetrically arranged, and the protrusion at the upper end of the locking blocks extends into the middle of the slide rail one and the slide rail two.

[0007] Furthermore, the middle parts of slide rail one, slide rail two, support plate one, and support plate two are all hollow.

[0008] Furthermore, the upper ends of the first and second limiting blocks are fitted with a base, and the lower end of the base is flush with the first and second limiting blocks. The bottom ends of the first, second, and locking blocks are fitted with the upper surface of the turntable.

[0009] Furthermore, the ends of the first limiting block and the second limiting block, as well as the corners of the base, are all provided with through screw holes, and the ends of the first limiting block, the second limiting block, the first slide rail, and the second slide rail are provided with rounded chamfers.

[0010] Furthermore, the test fixture mechanism also includes a locking bolt that passes through the strapdown navigation component and extends into a cavity to abut against the locking block.

[0011] Furthermore, it also includes a sliding anti-collision mechanism, which includes anti-collision rubber strips and support columns. The anti-collision rubber strips are symmetrically bonded to the middle of one side of support plate one and support plate two. The support columns are symmetrically sleeved on the middle of the inner side of support plate one and support plate two, and one end of the support column is respectively fixed with magnetic strip one and magnetic strip two. Magnetic strip one is arranged on one side of magnetic strip two, and magnetic strip one and magnetic strip two repel each other.

[0012] This utility model has the following beneficial effects:

[0013] This utility model utilizes the sliding between the upper protrusion of the locking block and slide rail one and slide rail two to allow for the adjustment of the distance between the mating support plates one and two. The locking bolts penetrate the strapdown navigation component and engage with the locking block, while the threaded locking between limit blocks one and two and the turntable allows for the testing and positioning of strapdown navigation component structures of various sizes. This avoids the probability of collisions between structures during repeated disassembly and assembly, reducing damage costs. Furthermore, during the adjustment of the sliding distance between support plates one and two, the repulsion between magnetic strips one and two prevents contact and collision damage. The contact between the anti-collision rubber strip and the base prevents collision damage between support plates one and two and the base due to repulsive forces, further reducing costs, ensuring structural applicability, ease of use, and meeting requirements. Attached Figure Description

[0014] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 Top view of the assembly of the strapdown navigation component of this utility model;

[0016] Figure 2 A bottom view of the assembly of the strapdown navigation component of this utility model;

[0017] Figure 3 This is a schematic diagram of the sliding anti-collision mechanism of this utility model.

[0018] The attached diagram lists the components represented by each number as follows:

[0019] 11. Limiting block one; 12. Limiting block two; 13. Base; 14. Slide rail one; 15. Slide rail two; 16. Support plate one; 17. Support plate two; 18. Locking block; 19. Locking bolt; 21. Anti-collision rubber strip; 22. Support column; 23. Magnetic strip one; 24. Magnetic strip two. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0022] Please see Figure 1-3 As shown, this utility model is a novel strapdown navigation component testing fixture, comprising:

[0023] The test fixture mechanism includes a first limiting block 11, a second limiting block 12, and a locking block 18. The first limiting block 11 is arranged on one side of the second limiting block 12, and the upper ends of the first limiting block 11 and the second limiting block 12 are respectively attached to the slide rail 14 and the slide rail 2 15. The upper middle positions of the slide rail 14 and the slide rail 2 15 are respectively attached to one side and the slide rail 2 17. Two sets of locking blocks 18 are symmetrically arranged, and the protrusion at the upper end of the locking block 18 extends into the middle of the slide rail 14 and the slide rail 2 15.

[0024] The upper ends of the first limiting block 11 and the second limiting block 12 are fitted with the base 13, and the lower end of the base 13 is flush with the first limiting block 11 and the second limiting block 12. The bottom ends of the first limiting block 11, the second limiting block 12 and the locking block 18 are fitted with the upper surface of the turntable.

[0025] Limiting blocks 11 and 12, together with base 13, provide an installation environment and ensure structural stability through contact with the turntable surface. Base 13 then presses against slide rails 14 and 15 to limit their structure. The upper protrusion of locking block 18 extends into slide rails 14 and 15, support plate 16 and support plate 27. The spacing between support plate 16 and support plate 2 can be easily adjusted by sliding between them to accommodate the installation of strapdown navigation components of different sizes.

[0026] The middle parts of slide rail 14, slide rail 2 15, support plate 1 16, and support plate 2 17 are all hollow.

[0027] The cavity is designed to accommodate the extension of the upper protrusion of the locking block 18.

[0028] Screw holes are provided through the ends of limit block 11 and limit block 2 12, as well as the corners of the base 13. The ends of limit block 11, limit block 2 12, slide rail 14 and slide rail 2 15 are rounded and chamfered.

[0029] By inserting and tightening bolts into the screw holes, the base 13, limit block 11, and limit block 2 12 can be structurally fixed and installed.

[0030] The test fixture mechanism also includes a locking bolt 19, which passes through the strapdown navigation component and extends into a cavity that abuts against the locking block 18;

[0031] The locking bolt 19 passes through the strapdown navigation component and the locking block 18 to form a counterforce, which can be used to fix strapdown navigation component structures of different sizes.

[0032] Working principle: Slide rail 14 and slide rail 2 15 are placed at the upper ends of limit blocks 11 and 22, respectively. Protrusions are provided at the lower ends of slide rail 14 and slide rail 2 15, extending into the grooves at the upper ends of limit blocks 11 and 22 for positioning. At this time, base 13 can be placed on top of limit blocks 11 and 22, and bolts are inserted into the screw holes at the corners of base 13 and tightened to fix base 13. Next, two sets of symmetrically arranged locking blocks 18 are placed on the turntable, and their upper ends are... The protrusions at the ends extend through the cavity into the support plate 16 and support plate 27. Bolts are inserted into the screw holes at the ends of the limiting blocks 11 and 22 and tightened to fix the limiting blocks 11 and 22. Then, the support plates 16 and 27 are pushed, and the required spacing of the adapted strapdown navigation component is adjusted by sliding on the slide rails 14 and 25. Finally, the locking bolts 19 penetrate through the corners of the strapdown navigation component and fix it by forming a resistance force with the locking block 18.

[0033] This solution can meet the testing and positioning requirements of strapdown navigation component structures of various sizes, and avoids the probability of collisions between structures during repeated disassembly and assembly, thereby reducing damage costs.

[0034] Please see Figure 1-3 As shown, this embodiment, based on the above embodiment, further includes a sliding anti-collision mechanism. The sliding anti-collision mechanism includes an anti-collision rubber strip 21 and a support column 22. The anti-collision rubber strip 21 is symmetrically bonded to the middle of one side of the support plate 16 and the support plate 27. The support column 22 is symmetrically sleeved in the middle of the inner side of the support plate 16 and the support plate 27. A magnetic strip 1 23 and a magnetic strip 24 are respectively fixed to one end of the support column 22. The magnetic strip 1 23 is arranged on one side of the magnetic strip 24, and the magnetic strip 1 23 and the magnetic strip 24 repel each other.

[0035] The anti-collision rubber strip 21 isolates the support plate 16 and support plate 17, which are affected by repulsive force, from the base 13 to prevent them from colliding and being damaged. The support column 22 is connected to the magnetic strip 23 and magnetic strip 24. The repulsion between the magnetic strip 23 and magnetic strip 24 can prevent the support plate 16 and support plate 17 from contacting and colliding during sliding.

[0036] Working principle: During the sliding adjustment of support plate 16 and support plate 27, if support plate 16 and support plate 27 gradually move closer together, the magnetic strips 23 and 24 will generate a repulsive force due to the gradually decreasing distance. This can prevent support plate 16 and support plate 27 from moving closer together again. The support plate 16 and support plate 27, affected by the repulsive force, will slide in the opposite direction. The anti-collision rubber strip 21 can isolate them from the base 13.

[0037] This design can meet the anti-collision protection requirements of the support plate 16 and support plate 27 structures in the sliding adjustment, further reducing losses.

[0038] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A novel strapdown navigation unit test fixture characterized by, Include: Test fixture mechanism, the test fixture mechanism includes limit block one (11), limit block two (12) and locking block (18), limit block one (11) is arranged on one side of limit block two (12), and one end of the upper end of limit block one (11), limit block two (12) is respectively matched with slide rail one (14) and slide rail two (15), one side of the upper end of the middle position of slide rail one (14), slide rail two (15) is respectively matched with support plate one (16), support plate two (17), locking block (18) is symmetrically provided with two groups, and the convex of the upper end of locking block (18) extends to the middle of slide rail one (14), slide rail two (15).

2. A novel strapdown navigation component test fixture according to claim 1, characterized in that: The middle part of the slide rail one (14), slide rail two (15), support plate one (16), support plate two (17) is provided with a cavity.

3. A novel strapdown navigation component test fixture according to claim 1, characterized in that: The upper end of the limit block one (11), limit block two (12) is matched with the base (13), and the lower end of the base (13) is flush with the limit block one (11), limit block two (12), the bottom end of the limit block one (11), limit block two (12), locking block (18) is matched with the upper end surface of the rotary table.

4. A novel strapdown navigation component test fixture according to claim 1, characterized in that: The end of the limit block one (11), limit block two (12) and the corner of the base (13) are all provided with screw holes, and the end of the limit block one (11), limit block two (12), slide rail one (14), slide rail two (15) is provided with arc chamfer.

5. A novel strapdown navigation component test fixture according to claim 1, characterized by: The test fixture mechanism further includes locking bolt (19), the locking bolt (19) penetrates the strapdown navigation component, extends out of the cavity and is in contact with the locking block (18).

6. A novel strapdown navigation component test fixture according to claim 1, characterized by: It also includes a sliding anti-collision mechanism, the sliding anti-collision mechanism includes anti-collision rubber strip (21) and support column (22), the anti-collision rubber strip (21) is symmetrically bonded on one side of the middle part of support plate one (16), support plate two (17), the support column (22) is symmetrically sleeved in the middle part of the inner side of support plate one (16), support plate two (17), and one end of the support column (22) is respectively fixed with magnetic stripe one (23), magnetic stripe two (24), the magnetic stripe one (23) is arranged on one side of the magnetic stripe two (24), and the magnetic stripe one (23), magnetic stripe two (24) repel each other.

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