An inertial navigation device mounting device

Abstract

This utility model belongs to the field of inertial navigation equipment and provides an inertial navigation equipment installation device, including a telescopic mechanism, a fixed base, a floating base, an adjusting bolt, a fixing screw, a laser pointer, and a level. The fixed base is located at the fixed end of the telescopic mechanism and has a first screw hole. The floating base has a second screw hole. The adjusting bolt is screwed into the second screw hole and has a first through hole along its axis. One end of the fixing screw passes through the first through hole and is screwed into the first screw hole. The laser pointer and level are both mounted on the floating base. The floating base is used to install the IMU and the integrated navigation system. This device adjusts the height by telescopically extending and retracting the telescopic mechanism, allowing the telescopic mechanism to be fixedly supported inside the vehicle. Combined with the level and laser pointer, the IMU is adjusted to a suitable position. Complex algorithms are avoided, and a simple mechanical structure is used to correct installation errors. Moreover, after the telescopic mechanism is shortened, the overall height is small, making it very convenient to carry.

Description

Technical Field

[0001] This utility model belongs to the field of inertial navigation equipment, and specifically relates to an inertial navigation equipment installation device. Background Technology

[0002] With the development of technology and the improvement of living standards, people's requirements for automobiles are also increasing. Cars produced by various manufacturers are becoming increasingly intelligent and autonomous. Against this backdrop, testing regulations have emerged. These regulations include various tests, such as ADAS (Advanced Driver Assistance System) testing. To complete these tests, a series of devices are required, among which an indispensable device is the inertial navigation system (INS).

[0003] Inertial navigation systems (INS) typically need to be mounted on a carrier during use. In ADAS testing projects, the carrier is usually a vehicle. However, during actual testing, two problems arise when the vehicle is in motion:

[0004] I. Relative Position Cannot Be Fixed. The core component of inertial navigation—the Inertial Measurement Unit (IMU)—may move relative to the physical position of the carrier itself, which is unacceptable. During testing, the physical position of the IMU relative to the carrier must be strictly fixed to ensure the consistency of the measurement reference. The main reasons are as follows:

[0005] 1. A gyroscope measures the rotational angular velocity sensed by the IMU itself. If the IMU moves or rotates relative to the carrier, the angular velocity it measures will not be the angular velocity of the carrier itself, but rather an erroneous value superimposed with the relative motion.

[0006] 2. Accelerometers measure the specific force (including motion acceleration and gravitational acceleration components) sensed by the IMU itself. If the IMU moves or rotates relative to the carrier, the acceleration it measures will not accurately reflect the motion acceleration of the carrier's center of mass, and will also introduce additional entrainment acceleration and Coriolis acceleration (if the relative motion is complex), leading to serious distortion of the measurement values.

[0007] 3. The navigation system uses IMU measurements, combined with the initial attitude, velocity, and position obtained from the initial alignment, to calculate the vehicle's attitude, velocity, and position in the navigation coordinate system through a series of complex coordinate system rotations and integrations. All these calculations rely on one premise: the motion measured by the IMU is the motion of the vehicle's coordinate system. If the IMU undergoes relative motion within the vehicle, this premise is violated, and the calculated navigation parameters will contain unpredictable and significant errors.

[0008] II. Installation-related errors. When the IMU is rigidly fixed, there may be installation errors. Its physical axis may not be perfectly aligned with the theoretically defined axis of the carrier coordinate system (there may be a small installation error angle).

[0009] To solve the problem of the inability to fix the relative position, a device for fixing the inertial navigation system on the vehicle needs to be made. However, different test vehicles have different shapes and sizes, and their internal spaces are also different. The vehicles do not provide installation locations, which puts higher demands on the fixing device.

[0010] To address the second issue—errors caused by installation—the current market practice involves measuring and compensating for static, minor installation deviations through calibration, and then correcting them using algorithms in software. However, this approach is quite challenging and has a high barrier to entry for many companies.

[0011] Secondly, the fixed installation devices for foreign inertial navigation systems are relatively expensive, increasing the costs for automotive testing service companies and hindering their widespread adoption. At the same time, inertial navigation systems from different manufacturers also vary in size, making it impossible to achieve universal and convenient fixing devices. Utility Model Content

[0012] In view of the shortcomings of the existing technology, this utility model provides an inertial navigation device installation device, which can solve the above problems.

[0013] To achieve the above objectives, the present invention adopts the following technical solution: an inertial navigation device installation device, comprising a telescopic mechanism, a fixed base, a floating base, adjusting bolts, fixing screws, a laser pointer, and a level.

[0014] The fixed base is disposed at the fixed end of the telescopic mechanism, and the fixed base is provided with a first screw hole;

[0015] The floating base is provided with a second screw hole;

[0016] The adjusting bolt is screwed into the second screw hole, and the adjusting bolt has a first through hole extending along the axis;

[0017] One end of the fixing screw passes through the first through hole and is screwed into the first screw hole;

[0018] Both the laser pointer and the level are mounted on the floating base.

[0019] The floating base is used to mount the IMU and the integrated navigation system.

[0020] Preferably, a locking nut is also included, which is threaded onto the outside of the adjusting bolt.

[0021] Preferably, the fixed base is provided with the first screw hole at each of the four corners, and the floating base is provided with the second screw hole at each of the four corners, with the four second screw holes corresponding to the four first screw holes respectively.

[0022] Preferably, the floating base is provided with a level mounting base, and the level is mounted on the level mounting base.

[0023] Preferably, a support base is also included, and the telescopic mechanism is disposed on the support base.

[0024] Preferably, the telescopic mechanism includes a lower shaft and an upper shaft. The lower shaft is a sleeve structure with an open top. The upper shaft is slidably sleeved inside the lower shaft. A clamping mechanism is provided at the top opening of the lower shaft. The clamping mechanism is used to clamp and fix the upper shaft. The fixed base is provided on the side wall of the lower shaft.

[0025] Preferably, the fixed base is fixed to the lower shaft side wall by a clamping member. The clamping member includes a first clamping structure and a second clamping structure. The first clamping structure and the second clamping structure together form an annular structure. The annular structure is sleeved on the lower shaft side wall. The first clamping structure and the second clamping structure are locked and fixed by bolts. The fixed base is connected to the second clamping structure by bolts.

[0026] Preferably, the fixed base is fixed to the lower shaft sidewall by two clamping members.

[0027] Preferably, the top of the upper shaft is provided with a top cover.

[0028] Preferably, the upper shaft is a sleeve structure with an open top. The inner side of the upper shaft is coaxially provided with a first annular member, a second annular member, and a push rod. The bottom end of the push rod abuts against the second annular member, and the top end of the push rod extends through the first annular member to the top of the upper shaft. A rotating shaft is provided on the inner side wall of the upper shaft, and a cam is rotatably sleeved on the rotating shaft. A follower is slidably sleeved on the inner side of the second annular member, and the bottom end of the follower abuts against the cam. An elastic member is provided between the follower and the push rod. A first handle is provided on the cam, and a clearance hole adapted to the first handle is provided on the side wall of the upper shaft.

[0029] Compared with the prior art, the present invention has at least the following beneficial effects:

[0030] This utility model provides an inertial navigation device mounting device. The height is adjusted by a telescopic mechanism, allowing the mechanism to be fixedly supported inside the vehicle. A laser pointer is activated, and the emitted light spot is positioned centered on the dashboard area. At this point, one axis of the IMU is parallel to or coincides with the vehicle's longitudinal axis. The bubble in the level gauge is then observed to be centered. If not, the fixing screws are loosened, and the adjusting bolts are rotated until the bubble is centered. After adjustment, the fixing screws are tightened. At this point, the other two axes of the IMU are parallel to or coincide with the other two axes of the vehicle (the IMU's X, Y, and Z axes are parallel to or coincide with the vehicle's X, Y, and Z axes). This design avoids complex algorithms and uses a simple mechanical structure to correct installation errors. Furthermore, the overall height is small after the telescopic mechanism is shortened, making it very convenient to carry. Attached Figure Description

[0031] Figure 1 A three-dimensional structural diagram of an inertial navigation device installation device provided for an embodiment of this utility model;

[0032] Figure 2 A three-dimensional structural diagram of a fixed base and related parts of an inertial navigation device mounting device provided in an embodiment of this utility model;

[0033] Figure 3 A cross-sectional view of the adjusting bolt and related parts of an inertial navigation device mounting device provided in an embodiment of this utility model;

[0034] Figure 4 A three-dimensional structural diagram of the telescopic mechanism and related parts of an inertial navigation device mounting device provided for an embodiment of this utility model;

[0035] Figure 5 A three-dimensional structural diagram of the first clamping structure and related parts of an inertial navigation device mounting device provided for an embodiment of this utility model;

[0036] Figure 6 One of the front view structural schematic diagrams of the top rod and related parts of an inertial navigation device mounting device provided for an embodiment of this utility model;

[0037] Figure 7 This is the second front view structural schematic diagram of the top rod and related parts of an inertial navigation device mounting device provided in an embodiment of this utility model.

[0038] The attached diagram lists the components represented by each number as follows:

[0039] 100. Telescopic mechanism;

[0040] 1. Fixed base;

[0041] 2. Floating base;

[0042] 3. Adjust the bolts;

[0043] 4. Fixing screws;

[0044] 5. Laser pointer;

[0045] 6. Level;

[0046] 7. IMU;

[0047] 8. Integrated navigation system;

[0048] 9. Tighten the nut;

[0049] 10. Level mounting bracket;

[0050] 11. Support base;

[0051] 12. Lower shaft;

[0052] 13. Upper shaft;

[0053] 14. Clamping mechanism;

[0054] 15. First clamping structure;

[0055] 16. Second clamping structure;

[0056] 17. Top cover;

[0057] 18. First annular component;

[0058] 19. Second ring component;

[0059] 20. Top rod;

[0060] 21. Shaft;

[0061] 22. Cam;

[0062] 23. Follower;

[0063] 24. Elastic components;

[0064] 25. The top leader;

[0065] 26. Second in command. Detailed Implementation

[0066] To make the technical solutions and advantages of the embodiments of this application clearer, the exemplary embodiments of this application will be described in further detail below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not an exhaustive list of all embodiments. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other.

[0067] This embodiment presents a portable and highly convenient inertial navigation device mounting device specifically developed for the ADAS testing industry. It is adaptable to different vehicle shapes, sizes, and heights, and can adjust the floating base according to the dimensions of different inertial navigation devices. Furthermore, installation errors can be corrected through mechanical adjustments. This device can also be applied to other equipment requiring mounting.

[0068] Specifically, the inertial navigation device installation device includes a telescopic mechanism 100, a fixed base 1, a floating base 2, an adjusting bolt 3, a fixing screw 4, a laser pointer 5, and a level 6.

[0069] The fixed base 1 is set at the fixed end of the telescopic mechanism 100, and the fixed base 1 is provided with a first screw hole;

[0070] For example, see Figure 1 When different vehicles have different interior heights, the telescopic mechanism 100 can be extended or shortened to ensure that the telescopic mechanism 100 can be stably supported inside the vehicle.

[0071] For example, see Figure 2-3 The fixed base 1 is a rectangular plate, and the fixed base 1 has a first screw hole at each of the four corners.

[0072] The floating base 2 is provided with a second screw hole;

[0073] For example, see Figure 2-3 The floating base 2 is a rectangular plate, and it is fitted to the fixed base 1. Each of the four corners of the floating base 2 has a second screw hole, which corresponds to one of the four first screw holes.

[0074] The adjusting bolt 3 is screwed into the second screw hole, and the adjusting bolt 3 has a first through hole extending along the axis;

[0075] For example, see Figure 2-3 Each of the four second screw holes has a corresponding adjusting bolt 3, which is screwed into the corresponding second screw hole. Furthermore, each adjusting bolt 3 has a first through hole extending through its left and right sides.

[0076] One end of the fixing screw 4 passes through the first through hole and is screwed into the first screw hole;

[0077] For example, see Figure 2-3Each of the four adjusting bolts 3 has a corresponding fixing screw 4. The left end of the fixing screw 4 passes through the first through hole of the adjusting bolt 3 and is screwed into the first screw hole. That is, the adjusting bolts 3 and the floating base 2 can be fixed to the fixed base 1 using the fixing screws 4. It should be noted that the floating base 2 cannot rotate due to the limiting effect of the four adjusting bolts 3. After loosening the fixing screws 4, rotating one of the adjusting bolts 3 allows the floating base 2 near that adjusting bolt 3 to move back and forth, thus adjusting the position of different corners of the floating base 2 and consequently, adjusting the angle of the floating base 2.

[0078] Laser pointer 5 and level 6 are both mounted on floating base 2;

[0079] For example, see Figure 1-2 A level mounting base 10 is fixedly provided on the side wall of the floating base 2, and a level 6 is installed on the level mounting base 10. The level 6 is located on the right side of the telescopic mechanism.

[0080] For example, laser pointer 5 is mounted on level mounting base 10, with laser pointer 5 located to the right of level 6, and the laser emitting end of laser pointer 5 facing to the right.

[0081] The floating base 2 is used to mount the IMU7 and the integrated navigation system 8;

[0082] For example, see Figure 1 The integrated navigation system 8 is mounted on the side wall of the floating base 2 with screws. The IMU7 is located on the right side of the integrated navigation system 8 and directly below the laser pointer 5. Different floating bases 2 can be selected according to the different sizes of the integrated navigation system 8.

[0083] Based on the above structure, the inertial navigation device installation device provided in this embodiment adjusts its height via a telescopic mechanism 100, allowing the telescopic mechanism 100 to be fixedly supported inside the vehicle. The laser pointer 5 is turned on, ensuring the light spot emitted by the laser pointer 5 falls at the center of the width of the vehicle's dashboard. At this point, one axis of the IMU7 is parallel to or coincides with the vehicle's longitudinal axis. Then, the bubble in the level gauge 6 is observed to be in the center position. If not, the fixing screw 4 is loosened, and the adjusting bolt 3 is rotated until the bubble in the level gauge 6 is in the center position. After adjustment, the fixing screw 4 is tightened. At this point, the other two axes of the IMU7 are parallel to or coincide with the other two axes of the vehicle (the X, Y, and Z axes of the IMU7 are parallel to or coincide with the X, Y, and Z axes of the vehicle's coordinate system). This avoids complex algorithms and uses a simple mechanical structure to correct installation errors.

[0084] The telescopic mechanism 100 has a fully extended height of 121.5 cm and a fully retracted height of 81.5 cm, with an overall weight of 4.2 kg, making it convenient for transportation.

[0085] Based on the above technical solution, the technical solution provided in this embodiment also includes a locking nut 9, which is threaded onto the outside of the adjusting bolt 3;

[0086] For example, see Figure 2-3 By rotating the locking nut 9, the locking nut 9 comes into contact with the floating base 2, and friction is generated between the locking nut 9 and the floating base 2, which can play a role in limiting each other and effectively improve the stability of the adjusting bolt 3 and the floating base 2.

[0087] The technical solution provided in this embodiment also includes a support base 11, and a telescopic mechanism 100 is disposed on the support base 11;

[0088] For example, see Figure 1 The bottom end of the telescopic mechanism 100 is fixedly mounted on the support base 11. The support base 11 has an inverted U-shaped structure, which can span the protrusion in the middle of the rear row of the car, so that the support base 11 can be placed in the middle of the rear row of the car without interfering with the protrusion, thus making it more versatile.

[0089] In the technical solution provided in this embodiment, the telescopic mechanism 100 includes a lower shaft 12 and an upper shaft 13. The lower shaft 12 is a sleeve structure with an open top end. The upper shaft 13 is slidably sleeved inside the lower shaft 12. A clamping mechanism 14 is provided at the open top end of the lower shaft 12. The clamping mechanism 14 is used to clamp and fix the upper shaft 13. The fixed base 1 is provided on the side wall of the lower shaft 12.

[0090] For example, see Figure 4 The bottom end of the lower shaft 12 is fixed to the support base 11. A clamping mechanism 14 is provided at the top opening of the lower shaft 12. The upper shaft 13 is slidably sleeved inside the lower shaft 12, and at the same time, the upper shaft 13 is sleeved inside the clamping mechanism 14. In use, the clamping mechanism 14 is released, and then the upper shaft 13 is slid upward so that the top end of the upper shaft 13 abuts against the roof of the vehicle, thereby locking the clamping mechanism 14. At this time, the telescopic mechanism 100 can be stably supported inside the vehicle.

[0091] The clamping mechanism 14 is existing technology. The clamping mechanism 14 may include a second handle 26, which can be swung to release or clamp the upper shaft 13.

[0092] Of course, the clamping mechanism 14 can also include a C-shaped clamping member and a clamping screw. The C-shaped clamping member is fixed at the opening at the top of the lower shaft 12. The first end of the C-shaped clamping member has a screw hole, and the second end of the C-shaped clamping member has a rotating platform. One end of the clamping screw is rotatably connected to the rotating platform, and the other end of the clamping screw is screwed into the screw hole at the first end of the C-shaped clamping member. By rotating the clamping screw, the first and second ends of the C-shaped clamping member are brought together, thus clamping and fixing the upper shaft 13. Conversely, the upper shaft 13 can be released.

[0093] In the technical solution provided in this embodiment, the fixed base 1 is fixed to the side wall of the lower shaft 12 by two clamping members. The clamping members include a first clamping structure 15 and a second clamping structure 16. The first clamping structure 15 and the second clamping structure 16 together form an annular structure. The annular structure is sleeved on the side wall of the lower shaft 12. The first clamping structure 15 and the second clamping structure 16 are locked and fixed by bolts. The fixed base 1 and the second clamping structure 16 are connected by bolts.

[0094] For example, see Figure 1 , Figure 5 Both the first clamping structure 15 and the second clamping structure 16 are C-shaped clamping structures. The first end of the first clamping structure 15 and the first end of the second clamping structure 16 are locked together by bolts, and the second end of the first clamping structure 15 and the second end of the second clamping structure 16 are also locked together by bolts. When the first clamping structure 15 and the second clamping structure 16 are locked together by bolts, they can together form a ring structure, which can be fixedly clamped on the side wall of the lower shaft 12.

[0095] It should be noted that after loosening the bolts of the clamping parts, the first clamping structure 15 and the second clamping structure 16 can rotate around the lower shaft 12. By turning on the laser pointer 5 and rotating the clamping parts, the orientation of the laser pointer 5 can be adjusted so that the light spot emitted by the laser pointer 5 falls on the vehicle's dashboard at the center of the width. Then, by tightening the bolts of the clamping parts, it can be ensured that one axis of the IMU7 is parallel to or coincides with the longitudinal axis of the vehicle.

[0096] In the technical solution provided in this embodiment, a top cover 17 is provided at the top of the upper shaft 13.

[0097] For example, see Figure 4 The top cover 17 can increase the contact area and prevent the top of the upper shaft 13 from directly contacting the roof and damaging the roof structure. The top cover 17 and the top of the upper shaft 13 can be connected by a ball joint, so that the top cover 17 can be rotated to different angle positions to adapt to the shape of the roof surface.

[0098] In the technical solution provided in this embodiment, the upper shaft 13 is a sleeve structure with an open top. The inner side of the upper shaft 13 is coaxially provided with a first annular member 18, a second annular member 19, and a push rod 20. The bottom end of the push rod 20 abuts against the second annular member 19, and the top end of the push rod 20 extends through the first annular member 18 to the top of the upper shaft 13. The inner side wall of the upper shaft 13 is provided with a rotating shaft 21, and a cam 22 is rotatably sleeved on the rotating shaft 21. The inner side of the second annular member 19 is slidably sleeved with a follower member 23, and the bottom end of the follower member 23 abuts against the cam 22. An elastic member 24 is provided between the follower member 23 and the push rod 20. The cam 22 is provided with a first handle 25, and the side wall of the upper shaft 13 is provided with a clearance hole that matches the first handle 25.

[0099] For example, see Figure 6-7 The second annular member 19 is located below the first annular member 18, and the push rod 20 is slidably sleeved inside the first annular member 18. The diameter of the push rod 20 is larger than the inner diameter of the second annular member 19, so that the bottom end of the push rod 20 can abut against the second annular member 19. The top end of the push rod 20 passes through the first annular member 18 and extends above the upper shaft 13 and connects with the top cover 17.

[0100] For example, the follower 23 is a columnar structure, and the follower 23 is slidably sleeved inside the second annular member 19.

[0101] For example, the elastic element 24 is a spring. The two ends of the elastic element 24 are connected to the push rod 20 and the driven element 23, respectively.

[0102] For example, the shaft 21 is located directly below the follower 23, and the cam 22 can rotate around the shaft 21. The end of the cam 22 furthest from the shaft 21 is called the far end, and the end of the cam 22 closest to the shaft 21 is called the near end. When the cam 22 rotates to a horizontal position, as... Figure 6 The distal end of cam 22 faces left, and the bottom end of follower 23 abuts against the proximal end of cam 22. When cam 22 rotates to the vertical position, as... Figure 7 The far end of cam 22 faces upward, and the bottom end of follower 23 abuts against the far end of cam 22.

[0103] When using, keep the first handle 25 in a horizontal position, such as Figure 6 The bottom end of the driven member 23 abuts against the proximal end of the cam 22, and the elastic member 24 is in its natural state. The upper shaft 13 slides upward until the top cover 17 abuts against the roof, locking the clamping mechanism 14. Then, the first handle 25 swings downward, driving the cam 22 to rotate clockwise, keeping the cam 22 vertical. The bottom end of the driven member 23 abuts against the distal end of the cam 22. Figure 7 Since the push rod 20 cannot move upward, the elastic element 24 will inevitably be compressed. At this time, the elastic element 24 generates an upward force, which in turn provides an upward pressure to the push rod 20 and the top cover 17. This can increase the friction when the top cover 17 abuts against the roof, thereby improving the stability of the telescopic mechanism.

[0104] The design of the clearance hole can prevent interference between the first handle 25 and the upper shaft 13 during rotation.

[0105] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0106] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0107] 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 appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of this application.

[0108] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of this application. Therefore, if such modifications and variations fall within the scope of the claims of this application and their equivalents, this application also intends to include such modifications and variations.

Claims

1. An inertial navigation equipment mounting arrangement characterised in that, Includes telescopic mechanism (100), fixed base (1), floating base (2), adjusting bolt (3), fixing screw (4), laser pointer (5), and level (6); The fixed base (1) is disposed at the fixed end of the telescopic mechanism (100), and the fixed base (1) is provided with a first screw hole; The floating base (2) is provided with a second screw hole; The adjusting bolt (3) is screwed to the second screw hole, and the adjusting bolt (3) is provided with a first through hole along the axis; One end of the fixing screw (4) passes through the first through hole and is screwed into the first screw hole; The laser pointer (5) and the level (6) are both mounted on the floating base (2); The floating base (2) is used to install the IMU (7) and the integrated navigation system (8).

2. An inertial navigation equipment mounting arrangement according to claim 1, characterised in that, It also includes a locking nut (9), which is threaded onto the outside of the adjusting bolt (3).

3. An inertial navigation equipment mounting arrangement according to claim 1, characterised in that, The fixed base (1) has the first screw hole at each of its four corners, and the floating base (2) has the second screw hole at each of its four corners. The four second screw holes correspond to the four first screw holes respectively.

4. An inertial navigation equipment mounting arrangement according to claim 1, characterised in that The floating base (2) is provided with a level mounting base (10), and the level (6) is mounted on the level mounting base (10).

5. An inertial navigation equipment mounting arrangement according to claim 1, characterised in that It also includes a support base (11), on which the telescopic mechanism (100) is disposed.

6. An inertial navigation equipment mounting arrangement according to claim 1, characterised in that The telescopic mechanism (100) includes a lower shaft (12) and an upper shaft (13). The lower shaft (12) is a sleeve structure with an open top. The upper shaft (13) is slidably sleeved inside the lower shaft (12). A clamping mechanism (14) is provided at the open top of the lower shaft (12). The clamping mechanism (14) is used to clamp and fix the upper shaft (13). The fixed base (1) is provided on the side wall of the lower shaft (12).

7. An inertial navigation device installation apparatus according to claim 6, characterized in that, The fixed base (1) is fixed to the side wall of the lower shaft (12) by a clamping member. The clamping member includes a first clamping structure (15) and a second clamping structure (16). The first clamping structure (15) and the second clamping structure (16) together form an annular structure. The annular structure is sleeved on the side wall of the lower shaft (12). The first clamping structure (15) and the second clamping structure (16) are locked and fixed by bolts. The fixed base (1) and the second clamping structure (16) are connected by bolts.

8. An inertial navigation equipment mounting arrangement according to claim 7, characterised in that, The fixed base (1) is fixed to the side wall of the lower shaft (12) by two clamping members.

9. An inertial navigation equipment mounting arrangement according to claim 6, characterised in that, The top of the upper shaft (13) is provided with a top cover (17).

10. An inertial navigation equipment mounting arrangement according to claim 6, characterised in that The upper shaft (13) is a sleeve structure with an open top. The upper shaft (13) is coaxially provided with a first annular part (18), a second annular part (19), and a push rod (20). The bottom end of the push rod (20) abuts against the second annular part (19). The top end of the push rod (20) extends through the first annular part (18) to the upper shaft (13). The inner wall of the upper shaft (13) is provided with a rotating shaft (21). A cam (22) is rotatably sleeved on the rotating shaft (21). A follower (23) is slidably sleeved on the inner side of the second annular part (19). The bottom end of the follower (23) abuts against the cam (22). An elastic element (24) is provided between the follower (23) and the push rod (20). A first handle (25) is provided on the cam (22). A clearance hole adapted to the first handle (25) is provided on the side wall of the upper shaft (13).

Images