Laser inertial measurement unit test fixing support

Abstract

The utility model discloses a laser inertial measurement unit test fixing support, and relates to the technical field of spaceflight, and the laser inertial measurement unit test fixing support comprises an adapter plate, a disc, a frame and at least three support leg assemblies used for adjusting height and levelness; the upper end of the adapter plate is provided with an identifier used for calibrating the installation direction of the tested device. Wherein the upper end of the adapter plate is connected with tested equipment, and the lower end of the adapter plate is connected with the upper end of the disc; the lower end of the disc is connected with the upper end of the frame; the at least three supporting leg assemblies are evenly arranged at the lower end of the frame at intervals. The laser inertial measurement unit can meet the requirements that the laser inertial measurement unit is stably placed according to the preset height and the preset direction and is not easily disturbed, vibrated and shaken when the electric performance of a rocket body is tested.

Description

Technical Field

[0001] This application relates to the field of aerospace technology, and in particular to a laser inertial navigation system testing fixture. Background Technology

[0002] Laser inertial measurement unit (IMU) testing involves a series of tests performed on the IMU. The primary purpose of these tests is to evaluate the performance of the IMU, including measuring its accuracy, stability, and reliability. For example, in the aerospace field, high-precision laser IMUs provide accurate attitude and navigation information for aircraft, making testing accuracy crucial.

[0003] When conducting electrical performance tests on the rocket body, there are certain requirements regarding the placement position, orientation, and stability of the laser inertial navigation system (INS). However, traditional fixed supports used for testing the INS have the following problems:

[0004] (1) Poor adjustment flexibility: The structure of traditional fixed brackets is relatively fixed, making it difficult to flexibly adjust the position and angle of the laser inertial group. For example, in some tests that require frequent changes in the attitude of the laser inertial group to simulate different flight states, traditional fixed brackets cannot meet the needs of rapid and precise adjustment.

[0005] (2) Inconvenient height adjustment: In some test scenarios, the height of the laser inertial group needs to be changed according to different test requirements. However, the traditional fixed bracket is insufficient in terms of height adjustment. It often requires the use of external tools or replacement of parts of different specifications, which is cumbersome and time-consuming, reducing test efficiency.

[0006] (3) Installation and disassembly are troublesome: Laser inertial navigation systems are usually quite precise, and traditional fixed brackets are not convenient to install and disassemble. They require a lot of time and effort to align and tighten screws, and are prone to damage such as bumps during operation.

[0007] (4) Limited stability: During the test, the laser inertial group needs to maintain a stable state to ensure the accuracy of the test data. However, traditional fixed brackets are insufficient in terms of vibration resistance and interference resistance. Small external vibrations or interferences may affect the measurement accuracy of the laser inertial group. Utility Model Content

[0008] The purpose of this application is to provide a fixed support for testing laser inertial navigation systems, which can stably place the laser inertial navigation system at a preset height and in a preset direction during the electrical performance testing of the rocket body, and is not easily disturbed, vibrated or shaken.

[0009] To achieve the above objectives, this application provides a laser inertial navigation system (INS) test mounting bracket, comprising: an adapter plate, a disk, a frame, and at least three support leg assemblies for adjusting height and level; the upper end of the adapter plate is provided with a mark for calibrating the installation direction of the device under test; wherein, the upper end of the adapter plate is connected to the device under test, and the lower end of the adapter plate is connected to the upper end of the disk; the lower end of the disk is connected to the upper end of the frame; and at least three support leg assemblies are evenly spaced at the lower end of the frame.

[0010] As shown above, the markings used to calibrate the installation direction of the device under test are quadrant markings.

[0011] As described above, the frame includes at least: a first upper crossbeam, a second upper crossbeam, a third upper crossbeam, a first lower crossbeam, a second lower crossbeam, a third lower crossbeam, a first vertical beam, a second vertical beam, and a third vertical beam; wherein one end of the first upper crossbeam is connected to one end of the second upper crossbeam, the other end of the second upper crossbeam is connected to one end of the third upper crossbeam, and the other end of the third upper crossbeam is connected to the other end of the first upper crossbeam; the lower end of the disc is connected to the first upper crossbeam, the second upper crossbeam, and the third upper crossbeam; one end of the first lower crossbeam is connected to one end of the second lower crossbeam, the other end of the second lower crossbeam is connected to one end of the third lower crossbeam, and one end of the third lower crossbeam is connected to the other end of the first lower crossbeam; and the first vertical beam... One end of the first vertical beam is connected to the connection point of the first upper crossbeam and the second upper crossbeam; the other end of the first vertical beam is connected to the connection point of the first lower crossbeam and the second lower crossbeam; one end of the second vertical beam is connected to the connection point of the second upper crossbeam and the third upper crossbeam; the other end of the second vertical beam is connected to the connection point of the second lower crossbeam and the third lower crossbeam; one end of the third vertical beam is connected to the connection point of the third upper crossbeam and the first upper crossbeam; the other end of the third vertical beam is connected to the connection point of the third lower crossbeam and the first lower crossbeam; there are three support leg assemblies; the upper end of the first support leg assembly is connected to the first vertical beam; the upper end of the second support leg assembly is connected to the second vertical beam; the upper end of the third support leg assembly is connected to the third vertical beam.

[0012] As described above, the frame further includes: at least one first connecting plate, at least one second connecting plate, and at least one third connecting plate; at least one first connecting plate is disposed on the first vertical beam; the upper end of the first leg assembly is connected to the first connecting plate; at least one second connecting plate is disposed on the second vertical beam; the upper end of the second leg assembly is connected to the second connecting plate; at least one third connecting plate is disposed on the third vertical beam; and the upper end of the third leg assembly is connected to the third connecting plate.

[0013] As shown above, there are two first connecting plates, which are respectively disposed on opposite sides of the first vertical beam and are parallel to each other; both first connecting plates are connected to the upper end of the first support leg assembly; there are two second connecting plates, which are respectively disposed on opposite sides of the second vertical beam and are parallel to each other; both second connecting plates are connected to the upper end of the second support leg assembly; there are two third connecting plates, which are respectively disposed on opposite sides of the third vertical beam and are parallel to each other; both third connecting plates are connected to the upper end of the third support leg assembly.

[0014] As described above, each outrigger assembly includes: a first outrigger crossbeam, a first outrigger vertical beam, a second outrigger vertical beam, a first outrigger tilting beam, a second outrigger crossbeam, a third outrigger crossbeam, a second outrigger tilting beam, a foot, and a pulley; wherein, one end of the first outrigger crossbeam is connected to one side of one end of the first outrigger vertical beam, and the other end of the first outrigger crossbeam is connected to one end of the second outrigger vertical beam; one end of the first outrigger tilting beam is connected to the connection point of the first outrigger crossbeam and the second outrigger vertical beam; the other end of the first outrigger tilting beam is connected to one side of the first outrigger vertical beam; one end of the second outrigger crossbeam is connected to the other end of the second outrigger vertical beam, and the other end of the second outrigger crossbeam is connected to the first outrigger tilting beam; one end of the third outrigger crossbeam is connected to the other side of the first outrigger vertical beam. One end of the second leg inclined beam is connected to the other side of one end of the first leg vertical beam, and the other end of the second leg inclined beam is connected to the other end of the third leg horizontal beam; the foot is connected to the second leg vertical beam; the pulley is connected to the lower end of the first leg horizontal beam and is located at the connection between the first leg horizontal beam and the first leg vertical beam; the other end of the first leg vertical beam of the first leg assembly is connected to the first connecting plate, the other end of the first leg vertical beam of the second leg assembly is connected to the second connecting plate, and the other end of the first leg vertical beam of the third leg assembly is connected to the third connecting plate. After connection, the other ends of the third leg horizontal beam of the first leg assembly, the other ends of the third leg horizontal beam of the second leg assembly, and the other ends of the third leg horizontal beam of the third leg assembly are connected to each other.

[0015] As described above, each outrigger assembly further includes: at least one outrigger connecting plate, which is disposed at the other end of the first outrigger vertical beam; the outrigger connecting plate of the first outrigger assembly is connected to the first connecting plate, the outrigger connecting plate of the second outrigger assembly is connected to the second connecting plate, and the outrigger connecting plate of the third outrigger assembly is connected to the third connecting plate.

[0016] As described above, each outrigger assembly includes two outrigger connecting plates, which are located on opposite sides of the other end of the first outrigger vertical beam and are parallel to each other. During connection, the two outrigger connecting plates of the first outrigger assembly are located outside the two first connecting plates, one outrigger connecting plate of the first outrigger assembly is connected to one first connecting plate, and the other outrigger connecting plate of the first outrigger assembly is connected to the other first connecting plate. The two outrigger connecting plates of the second outrigger assembly are located outside the two second connecting plates, one outrigger connecting plate of the second outrigger assembly is connected to one second connecting plate, and the other outrigger connecting plate of the second outrigger assembly is connected to the other second connecting plate. The two outrigger connecting plates of the third outrigger assembly are located outside the two third connecting plates, one outrigger connecting plate of the third outrigger assembly is connected to one third connecting plate, and the other outrigger connecting plate of the third outrigger assembly is connected to the other third connecting plate.

[0017] As shown above, the footrest is a hand-cranked adjustable footrest.

[0018] As shown above, the pulley is a swivel wheel.

[0019] The beneficial effects achieved by this application are as follows:

[0020] (1) The laser inertial navigation system test fixing bracket of this application can meet the requirements of placing the laser inertial navigation system stably at a preset height and in a preset direction during the electrical performance test of the rocket body, and is not easily disturbed, vibrated or shaken.

[0021] (2) The laser inertial navigation system test fixture of this application is equipped with feet, which can adjust the height and level of the laser inertial navigation system test fixture by means of the feet.

[0022] (3) The laser inertial navigation system test mounting bracket of this application is equipped with casters for easy movement.

[0023] (4) The adapter plate, disc, frame and leg assembly of the laser inertial navigation system test fixture of this application are all bolted together, which facilitates installation and disassembly. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this application. For those skilled in the art, other drawings can be obtained based on these drawings.

[0025] Figure 1 A schematic diagram of one embodiment of a laser inertial navigation system testing mounting bracket;

[0026] Figure 2 This is a schematic diagram of one embodiment of the adapter board;

[0027] Figure 3 This is a schematic diagram of one embodiment of a disk;

[0028] Figure 4 This is a schematic diagram of the structure of one embodiment of the framework;

[0029] Figure 5 This is a structural schematic diagram of one embodiment of the outrigger assembly. Detailed Implementation

[0030] 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, not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0031] like Figure 1-5 As shown, this application provides a laser inertial navigation system (INS) testing mounting bracket, comprising: an adapter plate 1, a disk 2, a frame 3, and at least three support leg assemblies 4 for adjusting height and level. The upper end of the adapter plate 1 is provided with a marking 11 for calibrating the installation direction of the device under test 5. The upper end of the adapter plate 1 is connected to the device under test 5, and the lower end of the adapter plate 1 is connected to the upper end of the disk 2. The lower end of the disk 2 is connected to the upper end of the frame 3. At least three support leg assemblies 4 are evenly spaced at the lower end of the frame 3.

[0032] Specifically, the device under test 5 is a laser inertial navigation system (INS), but it is not limited to a laser INS; this application preferably uses a laser INS. The specific number of outrigger assemblies 4 is set according to the actual situation; this application preferably uses three.

[0033] Furthermore, such as Figure 2 As shown, the marking 11 used to calibrate the installation direction of the device under test is a quadrant marking, but it is not limited to quadrant markings. In this application, quadrant markings are preferred.

[0034] Specifically, quadrant markings are used to clearly indicate the installation direction and alignment. Quadrant markings allow for the quick and accurate placement of the device under test 5 with its Y-axis pointing north and X-axis pointing upwards, stably next to the rocket body. This meets the requirements for stable placement of the laser inertial navigation system at a preset height and orientation during rocket electrical performance testing, and ensures it is not easily disturbed, vibrated, or shaken.

[0035] Furthermore, the adapter board 1 is provided with multiple interfaces 12, which are connected to the device under test 5 through the interfaces 12. The specific type of the interface is set according to the actual situation.

[0036] Specifically, the number of interfaces 12 is set according to the actual situation. In this application, four interfaces 12 are preferred, and the four interfaces 12 are evenly spaced on the adapter board 1.

[0037] Furthermore, the adapter plate 1 is provided with multiple adapter plate mounting holes 13, which are bolted to the disc 2.

[0038] Specifically, the number of adapter board mounting holes 13 is set according to the actual situation. In this application, six are preferred, with three adapter board mounting holes 13 located on one side of the multiple interfaces 12 and three adapter board mounting holes 13 located on the other side of the multiple interfaces 12.

[0039] Furthermore, the adapter plate mounting hole 13 is connected to the disc 2 by an M10 bolt, but is not limited to an M10 bolt; in this application, an M10 bolt is preferred.

[0040] Furthermore, the adapter plate 1 is a rectangular plate, but is not limited to rectangular plates.

[0041] Furthermore, the specific dimensions of the adapter plate 1 are set according to the actual situation. In this application, the preferred dimensions are: the length of the adapter plate 1 is 400-500mm, the width of the adapter plate 1 is 300-400mm, the thickness of the adapter plate 1 is 16mm, and the flatness requirement of the adapter plate 1 is 0.01mm. The adapter plate 1 has a large thickness and strict flatness requirements, which can ensure that the stable placement requirements of high-precision instruments are met.

[0042] Furthermore, such as Figure 3 As shown, the center of the disc 2 is provided with multiple bolt through holes 21, which are bolted to the frame 3.

[0043] Specifically, the upper end of the disc 2 is connected to the adapter plate 1, and the lower end is bolted to the frame 3 through multiple bolt holes 21 provided in the middle. The specific number of bolt holes 21 is set according to the actual situation, and nine are preferred in this application.

[0044] Furthermore, the bolt through hole 21 is connected to the frame 3 by an M6 bolt, but is not limited to M6 bolts.

[0045] Furthermore, the disc 2 is also provided with multiple expandable bolt holes 22, which are used to install equipment such as cable brackets, spirit levels and compasses as needed, or to serve as lifting points.

[0046] Furthermore, frame 3 is a triangular prism frame, but it is not limited to a triangular prism frame. It can also be a cylindrical frame or a rectangular column frame or other frame structures. In this application, a triangular prism frame is preferred, which makes the structure more stable.

[0047] Furthermore, such as Figure 4As shown, frame 3 includes at least: a first upper crossbeam 31, a second upper crossbeam 32, a third upper crossbeam 33, a first lower crossbeam 34, a second lower crossbeam 35, a third lower crossbeam 36, a first vertical beam 37, a second vertical beam 38, and a third vertical beam 39. One end of the first upper crossbeam 31 is connected to one end of the second upper crossbeam 32, the other end of the second upper crossbeam 32 is connected to one end of the third upper crossbeam 33, and the other end of the third upper crossbeam 33 is connected to the other end of the first upper crossbeam 31. The lower end of the disc 2 is connected to the first upper crossbeam 31, the second upper crossbeam 32, and the third upper crossbeam 33. One end of the first lower crossbeam 34 is connected to one end of the second lower crossbeam 35, the other end of the second lower crossbeam 35 is connected to one end of the third lower crossbeam 36, and one end of the third lower crossbeam 36 is connected to the other end of the first lower crossbeam 34. One end of the first vertical beam 37 is connected to the connection point of the first upper horizontal beam 31 and the second upper horizontal beam 32, and the other end of the first vertical beam 37 is connected to the connection point of the first lower horizontal beam 34 and the second lower horizontal beam 35. One end of the second vertical beam 38 is connected to the connection point of the second upper horizontal beam 32 and the third upper horizontal beam 33, and the other end of the second vertical beam 38 is connected to the connection point of the second lower horizontal beam 35 and the third lower horizontal beam 36. One end of the third vertical beam 39 is connected to the connection point of the third upper horizontal beam 33 and the first upper horizontal beam 31, and the other end of the third vertical beam 39 is connected to the connection point of the third lower horizontal beam 36 and the first lower horizontal beam 34. There are three support leg assemblies 4; the upper end of the first support leg assembly 4 is connected to the first vertical beam 37; the upper end of the second support leg assembly 4 is connected to the second vertical beam 38; and the upper end of the third support leg assembly 4 is connected to the third vertical beam 39.

[0048] Furthermore, the first upper crossbeam 31 is provided with multiple bolt holes, the second upper crossbeam 32 is provided with multiple bolt holes, and the third upper crossbeam 33 is provided with multiple bolt holes. The disc 2 is connected to the bolt holes of the first upper crossbeam 31, the second upper crossbeam 32, and the third upper crossbeam 33 through the bolt through holes 21 and M6 bolts.

[0049] Specifically, the number of bolt holes depends on the actual situation. Preferably, the first upper crossbeam 31 has three bolt holes, the second upper crossbeam 32 has three bolt holes, and the third upper crossbeam 33 has three bolt holes.

[0050] Furthermore, the first upper crossbeam 31, the second upper crossbeam 32, the third upper crossbeam 33, the first lower crossbeam 34, the second lower crossbeam 35, the third lower crossbeam 36, the first vertical beam 37, the second vertical beam 38, and the third vertical beam 39 all adopt Gb / 6728-1986 square hollow steel 020×20×z2, but are not limited to Gb / 6728-1986 square hollow steel 020×20×z2. In this application, Gb / 6728-1986 square hollow steel 020×20×z2 is preferred.

[0051] Furthermore, the connection between the first upper crossbeam 31, the second upper crossbeam 32, the third upper crossbeam 33, the first lower crossbeam 34, the second lower crossbeam 35, the third lower crossbeam 36, the first vertical beam 37, the second vertical beam 38, and the third vertical beam 39 is by welding, but not limited to welding. In this application, welding is preferred to serve as a connection for the whole.

[0052] Furthermore, the frame 3 also includes at least one first connecting plate 371, at least one second connecting plate 381, and at least one third connecting plate 391. At least one first connecting plate 371 is disposed on the first vertical beam 37; the upper end of the first support leg assembly 4 is connected to the first connecting plate 371. At least one second connecting plate 381 is disposed on the second vertical beam 38; the upper end of the second support leg assembly 4 is connected to the second connecting plate 381. At least one third connecting plate 391 is disposed on the third vertical beam 39; the upper end of the third support leg assembly 4 is connected to the third connecting plate 391.

[0053] Specifically, the contact area between the first connecting plate 371, the second connecting plate 381, and the third connecting plate 391 and the upper end of the support leg assembly 4 is increased, thereby reducing the shaking of the connection part. At least one first connecting plate 371 is welded to the first vertical beam 37, but is not limited to welding; welding is preferred in this application. At least one second connecting plate 381 is welded to the second vertical beam 38, but is not limited to welding; welding is preferred in this application. At least one third connecting plate 391 is welded to the third vertical beam 39, but is not limited to welding; welding is preferred in this application.

[0054] Furthermore, the first connecting plate 371, the second connecting plate 381, and the third connecting plate 391 are all steel plates, but are not limited to steel plates.

[0055] Furthermore, the first connecting plate 371, the second connecting plate 381 and the third connecting plate 391 are each provided with a plurality of bolt holes, which are bolted to the upper end of the outrigger assembly 4 through the bolt holes, but not limited to bolt connection. In this application, bolt connection is preferred.

[0056] Specifically, the number of bolt holes on the first connecting plate 371, the second connecting plate 381, and the third connecting plate 391 is set according to the actual situation, and is preferably five in this application.

[0057] Furthermore, the specific number of the first connecting plate 371, the second connecting plate 381, and the third connecting plate 391 is set according to the actual situation. In this application, it is preferred that: there are two first connecting plates 371, which are respectively disposed on opposite sides of the first vertical beam 37 and are parallel to each other; both first connecting plates 371 are connected to the upper end of the first support leg assembly 4; there are two second connecting plates 381, which are respectively disposed on opposite sides of the second vertical beam 38 and are parallel to each other; both second connecting plates 381 are connected to the upper end of the second support leg assembly 4; there are two third connecting plates 391, which are respectively disposed on opposite sides of the third vertical beam 39 and are parallel to each other; both third connecting plates 391 are connected to the upper end of the third support leg assembly 4.

[0058] Furthermore, such as Figure 5 As shown, each outrigger assembly 4 includes: a first outrigger crossbeam 41, a first outrigger vertical beam 42, a second outrigger vertical beam 43, a first outrigger inclined beam 44, a second outrigger crossbeam 45, a third outrigger crossbeam 46, a second outrigger inclined beam 47, a foot 48, and a pulley 49. One end of the first outrigger crossbeam 41 is connected to one side of one end of the first outrigger vertical beam 42, and the other end of the first outrigger crossbeam 41 is connected to one end of the second outrigger vertical beam 43. One end of the first outrigger inclined beam 44 is connected to the connection point between the first outrigger crossbeam 41 and the second outrigger vertical beam 43; the other end of the first outrigger inclined beam 44 is connected to one side of the first outrigger vertical beam 42. One end of the second outrigger crossbeam 45 is connected to the other end of the second outrigger vertical beam 43, and the other end of the second outrigger crossbeam 45 is connected to the first outrigger inclined beam 44. One end of the third outrigger crossbeam 46 is connected to the other side of the first outrigger vertical beam 42. One end of the second leg inclined beam 47 is connected to the other side of one end of the first leg vertical beam 42, and the other end of the second leg inclined beam 47 is connected to the other end of the third leg horizontal beam 46. The foot 48 is connected to the second leg vertical beam 43. The pulley 49 is connected to the lower end of the first leg horizontal beam 41 and is located at the connection between the first leg horizontal beam 41 and the first leg vertical beam 42. The other end of the first leg vertical beam 42 of the first leg assembly 4 is connected to the first connecting plate 371, the other end of the first leg vertical beam 42 of the second leg assembly 4 is connected to the second connecting plate 381, and the other end of the first leg vertical beam 42 of the third leg assembly 4 is connected to the third connecting plate 391. After connection, the other ends of the third leg horizontal beam 46 of the first leg assembly 4, the third leg horizontal beam 46 of the second leg assembly 4, and the third leg horizontal beam 46 of the third leg assembly 4 are interconnected.

[0059] Furthermore, each outrigger assembly 4 also includes at least one outrigger connecting plate 421, which is disposed at the other end of the first outrigger vertical beam 42. The outrigger connecting plate 421 of the first outrigger assembly 4 is connected to the first connecting plate 371, the outrigger connecting plate 421 of the second outrigger assembly 4 is connected to the second connecting plate 381, and the outrigger connecting plate 421 of the third outrigger assembly 4 is connected to the third connecting plate 391.

[0060] Furthermore, the specific number of outrigger connecting plates 421 is set according to the actual situation. Preferably, each outrigger assembly 4 includes two outrigger connecting plates 421, which are located on opposite sides of the other end of the first outrigger vertical beam 42, and are parallel to each other. During connection, the two outrigger connecting plates 421 of the first outrigger assembly 4 are located outside the two first connecting plates 371, with one outrigger connecting plate 421 connected to one first connecting plate 371, and the other outrigger connecting plate 421 connected to the other first connecting plate 371. Similarly, the two outrigger connecting plates 421 of the second outrigger assembly 4 are located outside the two second connecting plates 381, with one outrigger connecting plate 421 connected to one second connecting plate 381, and the other outrigger connecting plate 421 connected to the other second connecting plate 381. The two leg connecting plates 421 of the third leg assembly 4 are located on the outside of the two third connecting plates 391 respectively. One leg connecting plate 421 of the third leg assembly 4 is connected to one third connecting plate 391, and the other leg connecting plate 421 of the third leg assembly 4 is connected to the other third connecting plate 391.

[0061] Furthermore, the foot 48 is a hand-cranked lifting foot support, but it is not limited to a hand-cranked lifting foot support. In this application, a hand-cranked lifting foot support is preferred.

[0062] Specifically, when the foot 48 is extended to its limit position, the pulley 49 is completely off the ground. The height of the laser inertial navigation system (INS) test fixture of this application can be adjusted by the foot 48. For example, the placement height of the INS can be adjusted between 1.3m and 1.7m, but it is not limited to adjusting the placement height of the INS between 1.3m and 1.7m. The levelness can also be adjusted by the three foot supports 48.

[0063] Furthermore, pulley 49 is a caster wheel, but not limited to caster wheels. In this application, a caster wheel is preferred, which can rotate 360 ​​degrees to facilitate the movement of the laser inertial measurement unit test fixed bracket.

[0064] The beneficial effects achieved by this application are as follows:

[0065] (1) The laser inertial navigation system test fixing bracket of this application can meet the requirements of placing the laser inertial navigation system stably at a preset height and in a preset direction during the electrical performance test of the rocket body, and is not easily disturbed, vibrated or shaken.

[0066] (2) The laser inertial navigation system test fixture of this application is equipped with feet, which can adjust the height and level of the laser inertial navigation system test fixture by means of the feet.

[0067] (3) The laser inertial navigation system test mounting bracket of this application is equipped with casters for easy movement.

[0068] (4) The adapter plate, disc, frame and leg assembly of the laser inertial navigation system test fixture of this application are all bolted together, which facilitates installation and disassembly.

[0069] Although preferred embodiments of this application have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the scope of protection of this application is intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of this application. Obviously, those skilled in the art can make various alterations and variations to this application without departing from the spirit and scope of this application. Thus, if these modifications and variations of this application fall within the scope of protection of this application and its equivalents, this application also intends to include these modifications and variations.

Claims

1. A laser inertial navigation system testing mounting bracket, characterized in that, include: The adapter plate, disk, frame, and at least three support leg assemblies for adjusting height and level; the upper end of the adapter plate is marked for calibrating the installation orientation of the device under test; The upper end of the adapter board is connected to the device under test, and the lower end of the adapter board is connected to the upper end of the disk. The lower end of the disk is connected to the upper end of the frame; At least three support leg assemblies are evenly spaced at the lower end of the frame.

2. The laser inertial navigation system testing fixture according to claim 1, characterized in that, The markings used to calibrate the installation orientation of the device under test are quadrant markings.

3. The laser inertial navigation system testing fixture according to claim 1, characterized in that, The frame includes at least: a first upper crossbeam, a second upper crossbeam, a third upper crossbeam, a first lower crossbeam, a second lower crossbeam, a third lower crossbeam, a first vertical beam, a second vertical beam, and a third vertical beam; Among them, one end of the first upper crossbeam is connected to one end of the second upper crossbeam, the other end of the second upper crossbeam is connected to one end of the third upper crossbeam, and the other end of the third upper crossbeam is connected to the other end of the first upper crossbeam; the lower end of the disk is connected to the first upper crossbeam, the second upper crossbeam, and the third upper crossbeam. One end of the first lower crossbeam is connected to one end of the second lower crossbeam, the other end of the second lower crossbeam is connected to one end of the third lower crossbeam, and one end of the third lower crossbeam is connected to the other end of the first lower crossbeam. One end of the first vertical beam is connected to the connection point of the first upper horizontal beam and the second upper horizontal beam, and the other end of the first vertical beam is connected to the connection point of the first lower horizontal beam and the second lower horizontal beam. One end of the second vertical beam is connected to the connection point of the second upper horizontal beam and the third upper horizontal beam, and the other end of the second vertical beam is connected to the connection point of the second lower horizontal beam and the third lower horizontal beam. One end of the third vertical beam is connected to the connection point between the third upper horizontal beam and the first upper horizontal beam, and the other end of the third vertical beam is connected to the connection point between the third lower horizontal beam and the first lower horizontal beam. There are three outrigger assemblies; the upper end of the first outrigger assembly is connected to the first vertical beam; the upper end of the second outrigger assembly is connected to the second vertical beam; and the upper end of the third outrigger assembly is connected to the third vertical beam.

4. The laser inertial navigation system testing fixture according to claim 3, characterized in that, The frame also includes: at least one first connecting plate, at least one second connecting plate, and at least one third connecting plate; At least one first connecting plate is disposed on the first vertical beam; the upper end of the first support leg assembly is connected to the first connecting plate; At least one second connecting plate is disposed on the second vertical beam; the upper end of the second support leg assembly is connected to the second connecting plate; At least one third connecting plate is disposed on the third vertical beam; the upper end of the third leg assembly is connected to the third connecting plate.

5. The laser inertial navigation system testing fixture according to claim 4, characterized in that, There are two first connecting plates, which are respectively disposed on opposite sides of the first vertical beam and are parallel to each other; both first connecting plates are connected to the upper end of the first support leg assembly. There are two second connecting plates, which are respectively located on opposite sides of the second vertical beam and are parallel to each other; both second connecting plates are connected to the upper end of the second support leg assembly. There are two third connecting plates, which are respectively set on opposite sides of the third vertical beam and are parallel to each other; both third connecting plates are connected to the upper end of the third support leg assembly.

6. The laser inertial navigation system testing mounting bracket according to claim 5, characterized in that, Each outrigger assembly includes: a first outrigger crossbeam, a first outrigger vertical beam, a second outrigger vertical beam, a first outrigger tilt beam, a second outrigger crossbeam, a third outrigger crossbeam, a second outrigger tilt beam, a foot, and a pulley; One end of the first leg crossbeam is connected to one side of one end of the first leg vertical beam, and the other end of the first leg crossbeam is connected to one end of the second leg vertical beam. One end of the first leg inclined beam is connected to the connection point of the first leg horizontal beam and the second leg vertical beam; the other end of the first leg inclined beam is connected to one side of the first leg vertical beam. One end of the second leg crossbeam is connected to the other end of the second leg vertical beam, and the other end of the second leg crossbeam is connected to the first leg inclined beam. One end of the third leg crossbeam is connected to the other side of the first leg vertical beam; One end of the second leg inclined beam is connected to the other side of one end of the first leg vertical beam, and the other end of the second leg inclined beam is connected to the other end of the third leg horizontal beam. The sole of the foot connects to the vertical beam of the second leg; The pulley is connected to the lower end of the first leg crossbeam and is located at the connection between the first leg crossbeam and the first leg vertical beam; The other end of the first leg vertical beam of the first outrigger assembly is connected to the first connecting plate, the other end of the first leg vertical beam of the second outrigger assembly is connected to the second connecting plate, and the other end of the first leg vertical beam of the third outrigger assembly is connected to the third connecting plate. After connection, the other ends of the third leg horizontal beam of the first outrigger assembly, the other ends of the third leg horizontal beam of the second outrigger assembly, and the other ends of the third leg horizontal beam of the third outrigger assembly are connected to each other.

7. The laser inertial navigation system testing mounting bracket according to claim 6, characterized in that, Each outrigger assembly also includes: at least one outrigger connecting plate, which is disposed at the other end of the first outrigger vertical beam; The leg connecting plate of the first outrigger assembly is connected to the first connecting plate, the leg connecting plate of the second outrigger assembly is connected to the second connecting plate, and the leg connecting plate of the third outrigger assembly is connected to the third connecting plate.

8. The laser inertial navigation system testing fixture according to claim 7, characterized in that, Each outrigger assembly includes two outrigger connecting plates, which are located on opposite sides of the other end of the first outrigger vertical beam and are parallel to each other. During connection, the two leg connecting plates of the first leg assembly are located on the outside of the two first connecting plates respectively, one leg connecting plate of the first leg assembly is connected to one first connecting plate, and the other leg connecting plate of the first leg assembly is connected to the other first connecting plate. The two leg connecting plates of the second outrigger assembly are located on the outside of the two second connecting plates respectively. One leg connecting plate of the second outrigger assembly is connected to one of the second connecting plates, and the other leg connecting plate of the second outrigger assembly is connected to the other second connecting plate. The two leg connecting plates of the third leg assembly are located on the outside of the two third connecting plates respectively. One leg connecting plate of the third leg assembly is connected to one third connecting plate, and the other leg connecting plate of the third leg assembly is connected to the other third connecting plate.

9. The laser inertial navigation system testing mounting bracket according to claim 6, characterized in that, The footrests are hand-cranked and adjustable.

10. The laser inertial navigation system testing fixture according to claim 6, characterized in that, The pulley is a swivel caster.

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