Testing system of inertial navigation equipment

Abstract

The utility model relates to the technical field of inertial navigation equipment testing, in particular to a testing system of inertial navigation equipment, which comprises a three-axis turntable, a clamping end of the three-axis turntable is provided with a clamping base, the clamping base is provided with an assembly platform, the assembly platform comprises a guide bottom plate and a rotating chuck, and the guide bottom plate is connected with the rotating chuck. A circular ring groove is formed in the center of the guide bottom plate, the rotating chuck is rotationally connected into the circular ring groove, at least two sets of first sliding grooves are formed in the top face of the rotating chuck, channels of the first sliding grooves guide the circumferential edge of the rotating chuck, and second sliding grooves corresponding to the first sliding grooves are formed in the guide bottom plate. The guide bottom plate is further provided with a driving assembly used for driving the rotating chuck to rotate. According to the utility model, two or more independent inertial navigation devices can be tested synchronously, so that the waiting time is shortened, and the timeliness and the high efficiency of production operation are improved; the system complexity and the operation difficulty are reduced, and the test efficiency is ensured on the basis of automatic operation.

Description

Technical Field

[0001] The utility model relates to the technical field of inertial navigation equipment testing, in particular to a testing system for inertial navigation equipment. Background Art

[0002] Inertial navigation systems use gyroscopes to measure the angular velocity and acceleration of a moving object, inferring its position, velocity, and attitude through mathematical calculations. Because they require no external signals, are fully autonomous and unaffected by the external environment, they are widely used in aerospace, shipbuilding, and automotive applications. However, to ensure the high precision of inertial navigation systems, they must undergo rigorous testing and calibration during manufacturing and use.

[0003] Testing of inertial navigation equipment primarily involves testing for sensitivity, linearity, drift, and noise performance, assessing the accuracy and stability of the equipment under various operating conditions. Existing inertial navigation equipment testing systems primarily rely on turntable testing, using a high-precision electric turntable to simulate the device's rotational motion and integrating data acquisition and analysis systems to perform testing. However, existing testing equipment can only test one set of inertial navigation equipment at a time, resulting in poor timeliness and low efficiency. Therefore, a new inertial navigation equipment testing system is urgently needed to address these issues. Utility Model Content

[0004] In order to solve the above technical problems, the utility model provides a test system for inertial navigation equipment.

[0005] In order to achieve the above-mentioned purpose, the technical solution adopted by the present utility model is as follows:

[0006] A testing system for inertial navigation equipment includes a three-axis turntable, a clamping base is provided at the clamping end of the three-axis turntable, an assembly platform is provided on the clamping base, the assembly platform includes a guide base and a rotating chuck, a circular groove is provided at the center of the guide base, the rotating chuck is rotatably connected in the circular groove, at least two groups of first slide grooves are provided on the top surface of the rotating chuck, the grooves of the first slide grooves guide the circumference of the rotating chuck, a second slide groove corresponding to the first slide groove is provided on the guide base, and a drive component for driving the rotating chuck to rotate is also provided on the guide base.

[0007] Furthermore, the rotating chuck is surrounded by latching teeth. The drive assembly includes a gear and a motor disposed within the guide base. The latching teeth mesh with the gear, which is connected to the output shaft of the motor. When the motor is started, its output shaft rotates, driving the gear, which then meshes with the latching teeth. This transmits motor power to the rotating chuck via the gear transmission. Supported by the central shaft, the rotating chuck continuously rotates about the axis, meeting the adjustment requirements for assembly and disassembly of the test equipment.

[0008] Furthermore, four groups of the first chute are provided, and the four groups of the first chute are arranged at equal intervals around the circumference. The extension of the long axis of the first chute intersects the axis of the rotating chuck. The long axis of the first chute and the tangent of the rotating chuck are perpendicular to each other, ensuring that the sliding device can slide smoothly on the first chute when sliding the inertial navigation device for assembly or disassembly.

[0009] Furthermore, the guide base is a disc-shaped structure, and the extension of the long axis of the second chute intersects the axis of the rotating chuck. The guide base serves to bridge the first chute and the external transport chute, allowing the inertial navigation device to be smoothly assembled on the first chute or removed after testing and guided to the external transport chute, thus achieving a connection.

[0010] Furthermore, a limit block is provided between any two of the second chutes, and the limit block is higher than the plane of the top of the guide base. When the inertial navigation device is engaged with the first chutes via the fixed holder, the gear rotates, causing a misalignment between the first and second chutes. At this point, the inertial navigation device is supported by the limit block, ensuring that the inertial navigation device under test does not become detached from the device during the rotation test.

[0011] Furthermore, the channel of the second chute is adapted to be connected to the external inertial navigation device transport chute. Before assembling the inertial navigation device, the three-axis turntable is rotated and adjusted so that the outer end of the second chute is aligned with the transport chute at the input end. The inertial navigation device is then pushed into the second chute and then into the first chute using a mechanical push arm or other power device. The inertial navigation device is then clamped to the assembly platform by rotating the chuck for testing. After the test is completed, the three-axis turntable is adjusted so that the outer end of the second chute is aligned with the transport chute at the output end, facilitating the inertial navigation device to be exported to the transport chute, completing the single-group test.

[0012] Furthermore, the system further includes a fixed base for holding the inertial navigation device, the fixed base being adapted to slideably connect with the first and second slide slots. A fixed assembly for holding the inertial navigation device is provided above the fixed base, and a sliding assembly is provided below the fixed base. By securing the inertial navigation device to the fixed base, the inertial navigation device can be moved by moving the fixed base, thereby achieving testing operations.

[0013] Furthermore, the clamping base and assembly platform are fixedly connected by bolts. In an inertial navigation device test system, this bolted connection between the clamping base and assembly platform enables a stable, reliable, and easily assembled and disassembled assembly method. The high strength and shock resistance of the bolts ensure that the assembly platform is securely fixed to the clamping base.

[0014] Furthermore, the rotating chuck and the guide base plate are rotatably connected via a central shaft. The central shaft passes through the rotating chuck and the guide base plate, serving as a core component connecting the rotating chuck and the guide base plate. The central shaft's bearing structure enables the rotating chuck to rotate smoothly around the central shaft while preventing radial or axial deviation.

[0015] Furthermore, the bottom of the three-axis turntable is provided with a slide rail, and the three-axis turntable is slidably connected to the slide rail via a sliding assembly. When assembling or unassembling the inertial navigation equipment, the three-axis turntable needs to be rotated and adjusted. However, in actual assembly work, there is also the problem of short-distance connection between the various assembly mechanisms. The slide rail allows the three-axis turntable to be moved and adjusted, thereby enabling assembly and testing operations.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. This utility model can synchronously complete the test of two or more independent inertial navigation devices, shortening the waiting time and improving the timeliness and efficiency of production operations;

[0018] 2. The utility model reduces system complexity and operational difficulty, and ensures test efficiency on the basis of automated operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural diagram of the utility model;

[0020] Figure 2 It is a plan view of the assembly platform;

[0021] Figure identification: 1-three-axis turntable, 2-clamping base, 3-assembly platform, 4-guide base, 5-rotating chuck, 6-annular groove, 7-first slide groove, 8-second slide groove, 9-grip, 10-gear, 11-limit block, 12-center axis, 13-slide rail. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with embodiments and drawings. The schematic implementation methods of the present invention and their descriptions are only used to explain the present invention and are not intended to limit the present invention.

[0023] Example 1, as Figure 1 、 2As shown, the utility model discloses a test system for inertial navigation equipment, including a three-axis turntable 1, a clamping base 2 is provided at the clamping end of the three-axis turntable 1, an assembly platform 3 is provided on the clamping base 2, the assembly platform 3 includes a guide base plate 4 and a rotating chuck 5, a circular groove 6 is provided at the center of the guide base plate 4, the rotating chuck 5 is rotatably connected in the circular groove 6, at least two groups of first slide grooves 7 are provided on the top surface of the rotating chuck 5, the grooves of the first slide grooves 7 guide the circumference of the rotating chuck 5, a second slide groove 8 corresponding to the first slide groove 7 is provided on the guide base plate 4, and a driving component for driving the rotating chuck 5 to rotate is also provided on the guide base plate 4.

[0024] The rotating chuck 5 is surrounded by teeth 9. The drive assembly includes a gear 10 and a motor disposed within the guide base 4. The teeth 9 mesh with the gear 10, which is connected to the motor's output shaft. Specifically, when the motor is started, its output shaft rotates, driving the gear 10. The gear 10 meshes with the teeth 9, transmitting the motor's power to the rotating chuck 5 through the gear 10. Supported by a central shaft 12, the rotating chuck 5 rotates continuously about its axis, meeting the adjustment requirements for assembly and disassembly of the test equipment.

[0025] Four groups of first chute grooves 7 are provided, circumferentially spaced evenly apart. The extension of the long axis of the first chute grooves 7 intersects the axis of the rotating chuck 5. Specifically, the long axis of the first chute grooves 7 and the tangent of the rotating chuck 5 are perpendicular to each other, ensuring that the inertial navigation device can slide smoothly on the first chute grooves 7 during assembly or disassembly.

[0026] The guide base plate 4 is a circular disc, with the longitudinal axis of the second chute 8 intersecting the axis of the rotating chuck 5. Specifically, the guide base plate 4 bridges the first chute 7 and the external transport chute, allowing for smooth assembly of the inertial navigation device onto the first chute 7 or removal and transfer of the inertial navigation device to the external transport chute after testing.

[0027] A limit block 11 is provided between any two of the second chutes 8. The limit block 11 is higher than the plane of the top of the guide base 4. Specifically, when the inertial navigation device is engaged with the first chutes 7 via the fixed holder, the gear 10 rotates, causing a misalignment between the first chutes 7 and the second chutes 8. At this point, the inertial navigation device is supported by the limit block 11, ensuring that the inertial navigation device under test does not become detached from the device during the rotation test.

[0028] The channel of the second chute 8 is adapted to be connected to the external inertial navigation device transport chute. Specifically, before assembling the inertial navigation device, the three-axis turntable 1 is rotated and adjusted so that the outer end of the second chute 8 corresponds to the transport chute at the input end. The inertial navigation device is pushed into the second chute 8 and then into the first chute 7 by a mechanical push arm or other power device. The inertial navigation device is then clamped on the assembly platform 3 by rotating the chuck 5 for testing. After the test is completed, the three-axis turntable 1 is adjusted so that the outer end of the second chute 8 corresponds to the transport chute at the output end, which facilitates the export of the inertial navigation device to the transport chute, completing the single-group test operation.

[0029] The apparatus further includes a fixed base for holding the inertial navigation device, which is adapted to be slidably connected to the first slide groove 7 and the second slide groove 8. Specifically, a fixing assembly for holding the inertial navigation device is provided above the fixed base, and a sliding assembly is provided below the fixed base. By fixing the inertial navigation device to the fixed base, the inertial navigation device can be moved by moving the fixed base, thereby achieving testing operations.

[0030] The clamping base 2 and assembly platform 3 are fixedly connected by bolts. Specifically, in an inertial navigation device test system, the clamping base 2 and assembly platform 3 are fixedly connected by bolts, which enables a stable, reliable, and easy-to-assemble and disassemble assembly method. The high strength and shock resistance of the bolts ensure that the assembly platform 3 is firmly fixed to the clamping base 2.

[0031] The rotating chuck 5 and the guide base plate 4 are rotatably connected via a central shaft 12. Specifically, the central shaft 12 passes through the rotating chuck 5 and the guide base plate 4, serving as a core component connecting the rotating chuck 5 and the guide base plate 4. The bearing structure of the central shaft 12 enables the rotating chuck to rotate smoothly around the central shaft 12 while avoiding radial or axial deviation.

[0032] The bottom of the three-axis turntable 1 is provided with a slide rail 13, which is slidably connected to the three-axis turntable 1 via a sliding assembly. Specifically, when assembling or unassembling an inertial navigation device, the three-axis turntable 1 needs to be rotated and adjusted. In actual assembly work, there is also the problem of short-distance connection between the various assembly mechanisms. The slide rail 13 allows the three-axis turntable 1 to be moved and adjusted, thereby enabling assembly and testing operations.

[0033] Embodiment 2: Based on embodiment 1, this embodiment proposes a specific working principle of a test system for an inertial navigation device.

[0034] The specific implementation principle process is as follows:

[0035] Start the sliding assembly of the slide rail 13, and move the three-axis turntable 1 to the specified position through the slide rail 13 so that it is aligned with the input transportation slot of the external inertial navigation device. Through the operation of the transportation slot and the action of the mechanical push arm or other power equipment, the fixed card seat equipped with the relevant navigation device is guided into the second slide slot 8 and moved from the second slide slot 8 to the first slide slot 7. Then the motor drives the gear 10 to rotate, and the gear 10 engages with the tooth 9, driving the rotating chuck 5 to rotate, so that the first slide slot 7 and the second slide slot 8 are arranged alternately. The length of the sliding assembly of the fixed card seat is equal to the length of the first slide slot 7, which can ensure that the fixed card seat will not slide relative to each other after being confined in the first slide slot 7. Then move the three-axis turntable 1 away from the transportation slot and perform the rotation test operation. During the operation of the inertial navigation device, its performance data is collected in real time through the test system, and the working parameters of the device are dynamically adjusted according to the test requirements, such as rotation speed, angle or load.

[0036] After terminating the test operation, the sliding assembly of the slide rail 13 moves the three-axis turntable 1 to a position aligned with the external output transport chute. The drive assembly is activated, rotating the rotary chuck 5 until the outer end of the second chute 8 is aligned with the output transport chute. The first and second chute 8 paths are aligned. The inertial navigation device, driven by a mechanical push arm or other power device, moves from the first chute 7 to the second chute 8 and then slides onto the output transport chute, completing the unloading operation.

[0037] It should be noted that the outer ends of any one or both second chutes 8 of the guide base 4 always move to the input transport trough, while the two second chutes 8 of the piston on the opposite side always correspond to the output transport trough. By rotating the annular groove 6, the effect of importing on one side and exporting on the other side can be achieved.

[0038] Of course, the present invention may have many other implementation methods. Without departing from the spirit and essence of the present invention, technicians familiar with the field may make various corresponding changes and deformations based on the present invention, but these corresponding changes and deformations should all fall within the scope of protection of the claims attached to the present invention.

Claims

1. A test system for an inertial navigation device, comprising a three-axis turntable (1), wherein a clamping base (2) is provided at a clamping end of the three-axis turntable (1), and characterized in that: An assembly platform (3) is provided on the clamping base (2), and the assembly platform (3) includes a guide base plate (4) and a rotating chuck (5). A circular groove (6) is provided at the center of the guide base plate (4), and the rotating chuck (5) is rotatably connected in the circular groove (6). At least two groups of first sliding grooves (7) are provided on the top surface of the rotating chuck (5), and the grooves of the first sliding grooves (7) guide the circumference of the rotating chuck (5). A second sliding groove (8) corresponding to the first sliding groove (7) is provided on the guide base plate (4). A driving component for driving the rotating chuck (5) to rotate is also provided on the guide base plate (4).

2. The test system for an inertial navigation device according to claim 1, wherein: The outer periphery of the rotating chuck (5) is surrounded by a latching tooth (9), and the driving assembly comprises a gear (10) and a motor arranged inside the guide base plate (4). The latching tooth (9) is engaged with the gear (10), and the gear (10) is connected to the output shaft of the motor.

3. The test system for an inertial navigation device according to claim 1, wherein: Four groups of the first sliding grooves (7) are provided, and the four groups of the first sliding grooves (7) are arranged at equal intervals in the circumferential direction, and the extension lines of the long side axes of the first sliding grooves (7) intersect with the axis of the rotating chuck (5).

4. The test system for an inertial navigation device according to claim 3, wherein: The guide base plate (4) is a disc structure, and the extension line of the long side axis of the second sliding groove (8) intersects with the axis of the rotating chuck (5).

5. The test system for an inertial navigation device according to claim 1, wherein: A limiting block (11) is provided between any two of the second chutes (8), and the limiting block (11) is higher than the plane where the top of the guide base plate (4) is located.

6. The test system for an inertial navigation device according to claim 1, characterized in that: The groove of the second chute (8) is adapted to be connected to an external inertial navigation equipment transport groove.

7. The test system for an inertial navigation device according to claim 6, characterized in that: It also includes a fixed card seat for clamping the inertial navigation device, and the fixed card seat is adapted to be slidably connected with the first slide groove (7) and the second slide groove (8).

8. The inertial navigation device testing system according to claim 1, characterized in that: The clamping base (2) and the assembly platform (3) are fixedly connected via bolts.

9. The test system for an inertial navigation device according to claim 1, characterized in that: The rotating chuck (5) is rotationally connected to the wire base plate via a central axis (12).

10. The test system for an inertial navigation device according to claim 1, characterized in that: A slide rail (13) is provided at the bottom of the three-axis turntable (1), and the three-axis turntable (1) is slidably connected to the slide rail (13) via a sliding assembly.

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