Support for inertial navigation

Abstract

The utility model relates to the technical field of inertial navigation, in particular to a bracket for inertial navigation. The support for inertial navigation comprises a mounting base, the mounting base is used for mounting an inertial navigation element, the mounting base is cylindrical, an annular sliding groove and an axial sliding groove communicated with the annular sliding groove are formed in the circumferential wall of the mounting base, and the axial sliding groove is communicated with the first end face of the mounting base; a convex sliding block part is fixedly arranged on the peripheral surface of the inertial navigation element, and the sliding block part can slide in the annular sliding groove and the axial sliding groove; the support for inertial navigation further comprises a first locking assembly, and the first locking assembly can lock the sliding block part located in the annular sliding groove. The support for inertial navigation can be rotationally adjusted around any one of three mutually perpendicular shafts, and is provided with a simple and reliable rotary locking mechanism.

Description

Technical Field

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

[0002] Inertial navigation units typically require high manufacturing and assembly precision to ensure accurate and precise measurement results. This in turn provides accurate attitude information to the vehicles (such as vehicles, aircraft, and spacecraft) they are equipped with, thereby improving navigation accuracy. Existing inertial navigation units are typically secured to the vehicle using brackets or fixtures, which are secured to the vehicle using bolts and nuts.

[0003] Proper installation of inertial navigation units is crucial to system accuracy and reliability. Because inertial sensors (accelerometers and gyroscopes) are sensitive to orientation, installation must ensure their coordinate system is aligned precisely with the vehicle's direction of motion. Improper installation can cause sensor measurements to deviate from actual motion, compromising navigation data accuracy. This is particularly true in ground vehicle applications, where complex motion characteristics such as turns, ramps, and vibrations require strict installation orientation and positioning to ensure alignment with the vehicle's coordinate system and accurate perception of vehicle motion.

[0004] However, existing inertial navigation brackets have poor adjustment capabilities and are inconvenient to operate. In addition, the tightening effect after adjustment is unreliable, causing the inertial navigation element to be easily misplaced during subsequent use. Utility Model Content

[0005] The purpose of the present utility model is to provide an inertial navigation bracket, which can at least partially overcome the above technical problems, can be rotated and adjusted around any one of three mutually perpendicular axes, and has a simple and reliable rotation locking mechanism.

[0006] The utility model provides an inertial navigation bracket, including a mounting seat, which is used to mount an inertial navigation element. The mounting seat is cylindrical, and an annular slide groove and an axial slide groove connected to the annular slide groove are provided on the peripheral wall of the mounting seat, and the axial slide groove is connected to the first end face of the mounting seat; a raised slider portion is fixedly provided on the outer peripheral surface of the inertial navigation element, and the slider portion can slide in the annular slide groove and the axial slide groove; the inertial navigation bracket also includes a first locking assembly, which can lock the slider portion located in the annular slide groove.

[0007] Furthermore, the first locking assembly includes a first locking plate, a compression spring, and a first locking bolt; the first locking plate is located on a side of the annular sliding groove facing the first end surface, and a plurality of guide posts are provided on the side of the first locking plate facing the first end surface, and guide holes are provided on a peripheral wall of the mounting seat located between the annular sliding groove and the first end surface, corresponding one-to-one to the plurality of guide posts;

[0008] A limit platform is fixedly provided at one end of at least one guide column away from the first locking plate, and the compression spring is provided between the limit platform and the mounting seat; a first threaded hole is also provided on the peripheral wall of the mounting seat between the annular groove and the first end face, parallel to the guide hole, and a first locking bolt is screwed in the first threaded hole and the end of the first locking bolt away from the bolt head abuts against the first locking plate.

[0009] Furthermore, the circumferential angle of the annular sliding groove along the circumferential direction is greater than 180°.

[0010] Furthermore, the inertial navigation bracket also includes a first mounting ring and a second locking assembly; the mounting seat is located inside the first mounting ring, and a first rotating shaft extending radially is provided on the peripheral wall of the mounting seat, and a radial first through hole is opened on the peripheral wall of the first mounting ring, and the first rotating shaft is rotatably installed in the first through hole; the second locking assembly can lock the first rotating shaft located in the first through hole.

[0011] Furthermore, the second locking assembly includes a second locking bolt, a second locking plate and a third locking plate; a first sliding groove is opened on the peripheral wall of the first mounting ring, and the second locking plate and the third locking plate are both slidably installed in the first sliding groove and are respectively located on both sides of the first rotating shaft; the second locking bolt is a stud bolt, the second locking bolt is parallel to the length direction of the first sliding groove and is rotatably installed on the first mounting ring, and the second locking plate and the third locking plate are respectively threadedly connected to the left-hand thread and right-hand thread of the stud bolt; by rotating the second locking bolt, the second locking plate and the third locking plate can be brought close to each other and lock the first rotating shaft, or the second locking plate and the third locking plate can be moved away from each other and unlock the first rotating shaft.

[0012] Furthermore, a first groove is formed on a surface of the second locking plate facing the third locking plate, and a second groove is formed on a surface of the third locking plate facing the second locking plate.

[0013] Furthermore, the second locking assembly also includes a safety bolt, which is parallel to the length direction of the first slide groove and is threadedly connected to the first mounting ring; one end of the safety bolt away from the bolt head abuts against the surface of the second locking plate away from the third locking plate, or abuts against the surface of the third locking plate away from the second locking plate.

[0014] Furthermore, the inertial navigation bracket also includes a second mounting ring and a third locking assembly; the first mounting ring is located inside the second mounting ring, a second rotating shaft extending radially is provided on the peripheral wall of the first mounting ring, a radial second through hole is opened on the peripheral wall of the second mounting ring, and the second rotating shaft is rotatably installed in the second through hole; the third locking assembly can lock the second rotating shaft located in the second through hole.

[0015] and a lever, having a first end portion for pushing the pin against the second support frame, the first link being located adjacent the first and second support members, and a pin therein for locking the pin against a movement of the lever arm relative to the first support frame.

[0016] Furthermore, a reset platform and a reset spring are also provided on the second mounting ring; the reset platform is located on the side of the fourth locking plate facing the abutment plate, and after the third locking bolt unlocks the fourth locking plate, the reset spring can push the fourth locking plate away from the abutment plate.

[0017] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0018] 1. The inertial navigation bracket provided by the embodiment of the present disclosure has the setting of the guide column and the guide hole so that the first locking plate can slide smoothly and thereby compress or loosen the protrusion; the setting of the limit platform and the compression spring can ensure that when the first locking assembly is unlocked, the first locking plate will not interfere with the sliding of the protrusion in the annular groove; by rotating the first locking bolt, the first locking plate can be pressed against the protrusion to lock the protrusion, or the first locking plate can be moved away from the protrusion to unlock the protrusion; by providing a flexible pad, the locking friction force can be better provided and the rigid contact can be prevented from damaging the protrusion; by providing the annular groove, the inertial navigation element can be rotated and adjusted along its own axis;

[0019] 2. The inertial navigation bracket provided in the embodiment of the present disclosure can enable the mounting seat to be rotated and adjusted along the first rotating shaft by providing the first rotating shaft and the first through hole; by rotating the second locking bolt, the second locking plate and the third locking plate can be brought close to each other and lock the first rotating shaft, thereby achieving the fixation of the first mounting seat; by providing the first groove and the second groove, the second locking plate and the third locking plate can be easily clamped to the first rotating shaft; by providing the flexible pad layer, the locking friction force can be better provided (when locking, the flexible pad layer is compressed and deformed, and the contact area with the first rotating shaft is larger, thereby providing greater friction force. In addition, the friction coefficient of the contact between the flexible pad layer and the first rotating shaft is larger), and the rigid contact can be prevented from damaging the first rotating shaft.

[0020] 3. The inertial navigation bracket provided in the embodiment of the present disclosure can enable the first mounting ring to be rotated and adjusted along the second rotating shaft by providing the second rotating shaft and the second through hole; by rotating the third locking bolt, the push pin can be pushed to slide downward along the second sliding groove, and the pushing portion of the downwardly sliding push pin abuts against the wedge-shaped portion of the fourth locking plate, thereby causing the fourth locking plate to slide horizontally to the right until it abuts against the abutment plate, thereby locking the second rotating shaft through friction force; a flexible pad is provided on the side of the fourth locking plate facing the abutment plate, which can better provide locking friction (when locking, the flexible pad is compressed and deformed, and the contact area with the first rotating shaft is larger, thereby providing greater friction force. In addition, the friction coefficient of the contact between the flexible pad and the first rotating shaft is larger), and avoid damage to the abutment plate caused by rigid contact. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings described herein are used to provide a further understanding of the embodiments of the present invention, constitute a part of this application, and do not constitute a limitation of the embodiments of the present invention. In the accompanying drawings:

[0022] Figure 1 Schematic diagram of the three-dimensional structure of an inertial navigation bracket according to an embodiment of the present invention;

[0023] Figure 2This is a schematic diagram of a three-dimensional structure of an inertial navigation element installed in a mounting base according to an embodiment of the present invention;

[0024] Figure 3 Based on Figure 2 A cross-sectional view is shown, wherein the section passes through the slider portion;

[0025] Figure 4 Based on Figure 2 A longitudinal sectional view is shown, wherein the section plane passes through the first locking bolt;

[0026] Figure 5 A longitudinal cross-sectional view of an inertial navigation element installed in an inertial navigation bracket according to an embodiment of the present invention, wherein the cross-sectional view passes through the axis of the first rotating shaft;

[0027] Figure 6 Another longitudinal cross-sectional view of an inertial navigation unit installed in an inertial navigation bracket according to an embodiment of the present invention, wherein the cross-sectional plane passes through the second locking bolt and the safety bolt, and only the second locking assembly portion is illustrated;

[0028] Figure 7 This is another longitudinal cross-sectional view of an inertial navigation element installed in an inertial navigation bracket according to an embodiment of the present invention, wherein the cross-sectional plane passes through the wedge-shaped portion and the pushing portion.

[0029] Markings and corresponding parts names in the accompanying drawings:

[0030] 1-inertial navigation element; 11-slider portion; 2-mounting seat; 21-annular slide groove; 22-axial slide groove; 23-first end face; 26-first rotating shaft; 31-first locking plate; 311-guide column; 312-limiting platform; 313-flexible pad; 32-compression spring; 33-first locking bolt; 4-first mounting ring; 41-first through hole; 42-first slide groove; 43-second rotating shaft; 431-abutment plate; 51-second locking bolt; 52-second locking plate; 521-first groove; 53-third locking plate; 531-second groove; 54-safety bolt; 6-second mounting ring; 63-reset support; 64-reset spring; 71-fourth locking plate; 711-wedge-shaped portion; 72-third locking bolt; 73-thrust pin; 731-thrust portion. DETAILED DESCRIPTION

[0031] 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 the following examples and accompanying drawings. The exemplary embodiments and descriptions of the present invention are intended only to explain the present invention and are not intended to limit the present invention. It should be noted that the present invention is already in the stage of actual development and use.

[0032] Existing inertial navigation elements are usually fixed to a transportation vehicle via a bracket or a clamp, and the bracket is fastened to the transportation vehicle using bolts, nuts, etc.

[0033] Proper installation of inertial navigation units is crucial to system accuracy and reliability. Because inertial sensors (accelerometers and gyroscopes) are sensitive to orientation, installation must ensure their coordinate system is aligned precisely with the vehicle's direction of motion. Improper installation can cause sensor measurements to deviate from actual motion, compromising navigation data accuracy. This is particularly true in ground vehicle applications, where complex motion characteristics such as turns, ramps, and vibrations require strict installation orientation and positioning to ensure alignment with the vehicle's coordinate system and accurate perception of vehicle motion.

[0034] However, existing inertial navigation brackets have poor adjustment capabilities and are inconvenient to operate. In addition, the tightening effect after adjustment is unreliable, causing the inertial navigation element to be easily misplaced during subsequent use.

[0035] The utility model provides an inertial navigation bracket, which can rotate around any one of three mutually perpendicular axes to adjust the posture of an inertial navigation element and has a simple and reliable rotation locking mechanism.

[0036] Example 1:

[0037] like Figures 1 to 4 As shown, the inertial navigation bracket provided in this embodiment includes a mounting base 2, wherein the mounting base 2 is used to mount an inertial navigation element 1, specifically:

[0038] The mounting seat 2 is cylindrical, and an annular sliding groove 21 and an axial sliding groove 22 communicating with the annular sliding groove 21 are formed on the peripheral wall of the mounting seat 2. The axial sliding groove 22 is communicated with the first end surface 23 of the mounting seat 2.

[0039] A raised sliding block portion 11 is fixedly provided on the outer circumferential surface of the inertial navigation element 1 , and the sliding block portion 11 can slide in the annular sliding groove 21 and the axial sliding groove 22 ;

[0040] The inertial navigation bracket further includes a first locking assembly, which can lock the slider portion 11 located in the annular sliding groove 21 .

[0041] Therefore, it is only necessary to fix a raised slider portion 11 on the outer peripheral surface of the inertial navigation element 1, so that the inertial navigation element 1 can be easily installed on the mounting base 2 and can be rotated and adjusted along the axis of the mounting base 2; please refer to Figure 1, insert the inertial navigation element 1 into the mounting seat 2 along the axial direction, so that the protrusion slides into the annular groove 21 along the axial groove 22, and then rotates around the axis of the mounting seat 2 to adjust to the target angle, and locks it through the first locking assembly.

[0042] Specifically, the first locking assembly includes a first locking plate 31, a compression spring 32 and a first locking bolt 33;

[0043] The first locking plate 31 is located on the side of the annular groove 21 facing the first end face 23, and a plurality of guide columns 311 are provided on the side of the first locking plate 31 facing the first end face 23. Guide holes corresponding to the plurality of guide columns 311 are opened on the peripheral wall of the mounting seat 2 located between the annular groove 21 and the first end face 23; preferably, the guide holes and the guide columns 311 are parallel to the axis of the mounting seat 2.

[0044] A limiting platform 312 is fixedly provided at one end of at least one guide column 311 away from the first locking plate 31, and the compression spring 32 is arranged between the limiting platform 312 and the mounting seat 2; obviously, the purpose of the compression spring 32 is to push the first locking plate 31 so that the first locking plate 31 is away from the protrusion, thereby avoiding interference with the sliding of the protrusion in the annular groove 21, and for this purpose, one end of the compression spring 32 abuts against the limiting platform 312, and the other end abuts against the first end face 23.

[0045] A first threaded hole, parallel to the guide hole, is also formed on the peripheral wall of the mounting base 2 between the annular groove 21 and the first end surface 23. A first locking bolt 33 is threadedly mounted in the first threaded hole, with the end of the first locking bolt 33 distal from the bolt head abutting the first locking plate 31. Preferably, the end of the first locking bolt 33 distal from the bolt head is unthreaded and hemispherical. The hemispherical end abuts the first locking plate 31, facilitating rotation of the first locking plate 31.

[0046] Preferably, a flexible cushion layer 313 is provided on a side of the first locking plate 31 facing the guide post 311 .

[0047] Accordingly, the setting of the guide column 311 and the guide hole can enable the first locking plate 31 to slide smoothly and thus tighten or loosen the protrusion; the setting of the limit platform 312 and the compression spring 32 can ensure that when the first locking assembly is unlocked, the first locking plate 31 will not interfere with the sliding of the protrusion in the annular groove 21; by rotating the first locking bolt 33, the first locking plate 31 can be pressed toward the protrusion and thus lock the protrusion, or the first locking plate 31 can be moved away from the protrusion and thus unlock the protrusion; by setting the flexible pad 313, the locking friction can be better provided and the rigid contact can be avoided from damaging the protrusion.

[0048] More specifically, the circumferential angle of the annular sliding groove 21 along the circumferential direction is greater than 180°. Figure 3 As shown, Figure 3 Where θ represents the circumferential angle of the annular groove 21 along the circumferential direction, based on which the inertial navigation element 1 can be rotated 360° along its own axis (e.g. Figure 3 In the case shown, inertial navigation unit 1 can be rotated by θ along its own axis. By rotating mounting base 2 180°, inertial navigation unit 1 can be rotated by θ along its own axis on the other side, for a total of 2θ rotational adjustments).

[0049] Example 2:

[0050] like Figure 5 、 Figure 6 As shown, this embodiment is based on embodiment 1, except that, in this embodiment:

[0051] The inertial navigation bracket also includes a first mounting ring 4 and a second locking assembly;

[0052] The mounting base 2 is located within the first mounting ring 4. A radially extending first rotational axis 26 is provided on the peripheral wall of the mounting base 2. A radially extending first through-hole 41 is formed in the peripheral wall of the first mounting ring 4. The first rotational axis 26 is rotatably mounted within the first through-hole 41. Obviously, to allow the mounting base 2 to be rotated 180°, the mounting base 2 must have two first rotational axes 26 symmetrically distributed along the axis of the mounting base. This allows the mounting base 2 to be rotated and adjusted along the first rotational axes 26.

[0053] The second locking assembly can lock the first rotating shaft 26 located in the first through hole 41 .

[0054] Thus, the mounting seat 2 can be rotated and adjusted along the first rotating shaft 26 and effectively locked under the action of the second locking assembly.

[0055] The second locking assembly includes a second locking bolt 51, a second locking plate 52 and a third locking plate 53;

[0056] A first sliding groove 42 is formed on the peripheral wall of the first mounting ring 4 , and the second locking plate 52 and the third locking plate 53 are both slidably mounted in the first sliding groove 42 and are respectively located on both sides of the first rotating shaft 26 ;

[0057] The second locking bolt 51 is a stud bolt, which is parallel to the length direction of the first slide groove 42 and is rotatably mounted on the first mounting ring 4. The second locking plate 52 and the third locking plate 53 are threadedly connected to the left-hand thread and right-hand thread of the stud bolt respectively.

[0058] By rotating the second locking bolt 51 , the second locking plate 52 and the third locking plate 53 can be moved closer to each other and lock the first rotating shaft 26 , or the second locking plate 52 and the third locking plate 53 can be moved away from each other and unlock the first rotating shaft 26 .

[0059] Preferably, a first groove 521 is defined on a surface of the second locking plate 52 facing the third locking plate 53 , and a second groove 531 is defined on a surface of the third locking plate 53 facing the second locking plate 52 .

[0060] More preferably, a flexible pad layer 313 is provided in both the first groove 521 and the second groove 531 .

[0061] Therefore, please refer to Figure 6 By rotating the second locking bolt 51, the second locking plate 52 and the third locking plate 53 can be brought close to each other and lock the first rotating shaft 26, thereby achieving the fixation of the first mounting seat 2; by providing the first groove 521 and the second groove 531, the second locking plate 52 and the third locking plate 53 can be easily clamped to the first rotating shaft 26; by providing the flexible pad 313, the locking friction force can be better provided (when locking, the flexible pad 313 is compressed and deformed, and the contact area with the first rotating shaft 26 is larger, thereby providing greater friction force. In addition, the friction coefficient between the flexible pad 313 and the first rotating shaft 26 is larger), and the rigid contact can be prevented from causing damage to the first rotating shaft 26.

[0062] Furthermore, the second locking assembly further includes a safety bolt 54 , which is parallel to the length direction of the first slide groove 42 and is threadedly connected to the first mounting ring 4 ;

[0063] One end of the safety bolt 54 away from the bolt head abuts against a surface of the second locking plate 52 away from the third locking plate 53 , or abuts against a surface of the third locking plate 53 away from the second locking plate 52 .

[0064] It should be understood that the second locking bolt 51 is rotatably mounted on the first mounting ring 4. Therefore, in the case of vibration, the second locking bolt 51 may rotate and cause the second locking assembly to be accidentally unlocked. For this purpose, a safety bolt 54 is provided. After the second locking bolt 51 is rotated to bring the second locking plate 52 and the third locking plate 53 closer to each other and lock the first rotating shaft 26, the safety bolt 54 is screwed in, thereby preventing the second locking plate 52 and the third locking plate 53 from moving away from each other.

[0065] Example 3:

[0066] like Figure 7 As shown, this embodiment is based on embodiment 1, except that, in this embodiment:

[0067] The inertial navigation bracket further includes a second mounting ring 6 and a third locking assembly;

[0068] The first mounting ring 4 is located inside the second mounting ring 6. A second rotating shaft 43 extending radially is provided on the peripheral wall of the first mounting ring 4. A radial second through hole is opened on the peripheral wall of the second mounting ring 6. The second rotating shaft 43 is rotatably installed in the second through hole. Preferably, the first rotating shaft 26 and the second rotating shaft 43 are perpendicular.

[0069] The third locking assembly can lock the second rotating shaft 43 located in the second through hole.

[0070] Thus, the first mounting ring 4 can be rotated and adjusted along the second rotating shaft 43 and effectively locked under the action of the third locking assembly.

[0071] In view of the position of the first mounting ring 4, in order to avoid interference between the first mounting ring 4 and the second mounting ring 6 during the rotation around the second rotating shaft 43, the second locking assembly as described above is provided. However, for the third locking assembly, the spatial size is less restricted. For this reason, this embodiment designs the structure of the third locking assembly as described below. This structure does not require the provision of a safety bolt 54 and is simpler in structure.

[0072] Specifically, the third locking assembly includes a fourth locking plate 71, a third locking bolt 72 and a push pin 73;

[0073] A second sliding groove is provided on the peripheral wall of the second mounting ring 6, and the ejector pin 73 is slidably arranged in the second sliding groove;

[0074] An abutment plate 431 is fixedly provided at the end of the second rotating shaft 43 , and the distance between the abutment plate 431 and the axis of the second mounting ring 6 is greater than the distance between the ejector pin 73 and the axis of the second mounting ring 6 ;

[0075] The fourth locking plate 71 is slidably disposed on the second mounting ring 6 along the length direction of the second rotating shaft 43 and is located between the abutting plate 431 and the ejector pin 73;

[0076] A wedge-shaped portion 711 is fixedly provided on the plate surface of the fourth locking plate 71 facing the ejector pin 73 , and a corresponding ejector portion 731 is provided on the ejector pin 73 ;

[0077] The third locking bolt 72 is parallel to the length direction of the second sliding groove and is threadedly connected to the second mounting ring 6. The end of the third locking bolt 72 away from the bolt head abuts against the ejector pin 73.

[0078] By rotating the third locking bolt 72 , the ejector pin 73 can slide along the second sliding groove to push the fourth locking plate 71 , thereby causing the fourth locking plate 71 to abut against the abutting plate 431 .

[0079] Therefore, please refer to Figure 7 By rotating the third locking bolt 72, the ejector pin 73 can be pushed to slide downward along the second sliding groove, and the pushing portion 731 of the downward sliding ejector pin 73 abuts against the wedge-shaped portion 711 of the fourth locking plate 71, thereby causing the fourth locking plate 71 to slide horizontally to the right until it abuts against the abutting plate 431, thereby locking the second rotating shaft 43 through friction.

[0080] Preferably, a flexible padding layer 313 is provided on the side of the fourth locking plate 71 facing the abutment plate 431. The provision of the flexible padding layer 313 can better provide locking friction (when locking, the flexible padding layer 313 is compressed and deformed, increasing the contact area with the first rotating shaft 26 and thus providing greater friction. In addition, the friction coefficient between the flexible padding layer 313 and the first rotating shaft 26 is relatively high), and damage to the abutment plate 431 caused by rigid contact can be avoided.

[0081] More preferably, a reset platform 63 and a reset spring 64 are further provided on the second mounting ring 6;

[0082] The return support 63 is located on a side of the fourth locking plate 71 facing the abutment plate 431 . After the third locking bolt 72 unlocks the fourth locking plate 71 , the return spring 64 can push the fourth locking plate 71 away from the abutment plate 431 .

[0083] Based on this, when locking the second rotating shaft 43, the fourth locking plate 71 compresses the return spring 64, and when unlocking the second rotating shaft 43, the return spring 64 releases its elastic potential energy and pushes the fourth locking plate 71 away from the abutment plate 431, thereby ensuring that after unlocking the second rotating shaft 43 by rotating the third locking bolt 72, the fourth locking plate 71 actually leaves the abutment plate 431, thereby avoiding the fourth locking plate 71 from interfering with the rotation action of the first mounting ring 4 around the second rotating shaft 43.

[0084] The second mounting ring 6 can be fixedly mounted on the transportation vehicle carrying the inertial navigation unit 1 by means of threaded connection or the like.

[0085] It should be understood that the term "rotational installation" means that only relative rotation can occur between the two, and axial relative movement cannot occur. The means of limiting the axial relative movement between the two is, for example, setting a shaft shoulder and annular groove respectively at the position of the rotational fit of the two. The term "sliding installation" and "sliding setting" mean that only relative movement in a single direction can occur between the two. The means of limiting the relative movement in a single direction between the two is, for example, a dovetail groove fit or a T-slot fit structure.

[0086] The specific implementation methods described above further illustrate the purpose, technical solutions and beneficial effects of the utility model in detail. It should be understood that the above description is only a specific implementation method of the utility model and is not intended to limit the scope of protection of the utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the utility model should be included in the scope of protection of the utility model.

Claims

1. An inertial navigation bracket, comprising a mounting seat (2), wherein the mounting seat (2) is used to mount an inertial navigation element (1), and is characterized in that: The mounting seat (2) is cylindrical, and an annular sliding groove (21) and an axial sliding groove (22) communicating with the annular sliding groove (21) are provided on the peripheral wall of the mounting seat (2), and the axial sliding groove (22) is communicated with the first end surface (23) of the mounting seat (2); A raised sliding block portion (11) is fixedly provided on the outer peripheral surface of the inertial navigation element (1), and the sliding block portion (11) is capable of sliding in the annular sliding groove (21) and the axial sliding groove (22); The inertial navigation bracket further comprises a first locking component, which is capable of locking the slider portion (11) located in the annular sliding groove (21).

2. The inertial navigation bracket according to claim 1, characterized in that: The first locking assembly comprises a first locking plate (31), a compression spring (32) and a first locking bolt (33); The first locking plate (31) is located on a side of the annular sliding groove (21) facing the first end surface (23), and a plurality of guide posts (311) are provided on the side of the first locking plate (31) facing the first end surface (23), and guide holes corresponding to the plurality of guide posts (311) are provided on a peripheral wall of the mounting seat (2) located between the annular sliding groove (21) and the first end surface (23); A limiting platform (312) is fixedly provided at one end of at least one guide column (311) away from the first locking plate (31), and the compression spring (32) is provided between the limiting platform (312) and the mounting seat (2); A first threaded hole is also provided on the peripheral wall of the mounting seat (2) between the annular groove (21) and the first end face (23) in parallel with the guide hole. A first locking bolt (33) is screwed into the first threaded hole, and an end of the first locking bolt (33) away from the bolt head abuts against the first locking plate (31).

3. The inertial navigation bracket according to claim 1, characterized in that: The circumferential angle of the annular sliding groove (21) along the circumferential direction is greater than 180°.

4. The inertial navigation bracket according to claim 2, characterized in that: The inertial navigation bracket also includes a first mounting ring (4) and a second locking assembly; The mounting seat (2) is located inside the first mounting ring (4), a first rotating shaft (26) extending radially is provided on the peripheral wall of the mounting seat (2), a first radial through hole (41) is opened on the peripheral wall of the first mounting ring (4), and the first rotating shaft (26) is rotatably mounted in the first through hole (41); The second locking assembly is capable of locking the first rotating shaft (26) located in the first through hole (41).

5. The inertial navigation bracket according to claim 4, characterized in that: The second locking assembly comprises a second locking bolt (51), a second locking plate (52) and a third locking plate (53); A first sliding groove (42) is provided on the peripheral wall of the first mounting ring (4), and the second locking plate (52) and the third locking plate (53) are both slidably mounted in the first sliding groove (42) and are respectively located on both sides of the first rotating shaft (26); The second locking bolt (51) is a stud bolt, the second locking bolt (51) is parallel to the length direction of the first slide groove (42) and is rotatably mounted on the first mounting ring (4), and the second locking plate (52) and the third locking plate (53) are respectively threadedly connected to the left-hand thread and the right-hand thread of the stud bolt; By rotating the second locking bolt (51), the second locking plate (52) and the third locking plate (53) can be moved closer to each other and lock the first rotating shaft (26), or the second locking plate (52) and the third locking plate (53) can be moved away from each other and unlock the first rotating shaft (26).

6. The inertial navigation bracket according to claim 5, characterized in that: A first groove (521) is provided on the surface of the second locking plate (52) facing the third locking plate (53), and a second groove (531) is provided on the surface of the third locking plate (53) facing the second locking plate (52).

7. The inertial navigation bracket according to claim 6, characterized in that: The second locking assembly further includes a safety bolt (54), wherein the safety bolt (54) is parallel to the length direction of the first slide groove (42) and is threadedly connected to the first mounting ring (4); One end of the safety bolt (54) away from the bolt head abuts against a surface of the second locking plate (52) away from the third locking plate (53), or abuts against a surface of the third locking plate (53) away from the second locking plate (52).

8. The inertial navigation bracket according to claim 4, characterized in that: The inertial navigation bracket also includes a second mounting ring (6) and a third locking assembly; The first mounting ring (4) is located inside the second mounting ring (6), a second rotating shaft (43) extending radially is provided on the peripheral wall of the first mounting ring (4), a radial second through hole is opened on the peripheral wall of the second mounting ring (6), and the second rotating shaft (43) is rotatably mounted in the second through hole; The third locking assembly is capable of locking the second rotating shaft (43) located in the second through hole.

9. The inertial navigation bracket according to claim 8, characterized in that: The third locking assembly comprises a fourth locking plate (71), a third locking bolt (72) and a push pin (73); A second sliding groove is provided on the peripheral wall of the second mounting ring (6), and the ejector pin (73) is slidably arranged in the second sliding groove; An abutment plate (431) is fixedly provided at the end of the second rotating shaft (43), and the distance between the abutment plate (431) and the axis of the second mounting ring (6) is greater than the distance between the ejector pin (73) and the axis of the second mounting ring (6); The fourth locking plate (71) is slidably arranged on the second mounting ring (6) along the length direction of the second rotating shaft (43) and is located between the abutment plate (431) and the ejector pin (73); A wedge-shaped portion (711) is fixedly provided on the plate surface of the fourth locking plate (71) facing the ejector pin (73), and a push portion (731) is correspondingly provided on the ejector pin (73); The third locking bolt (72) is parallel to the length direction of the second sliding groove and is threadedly connected to the second mounting ring (6), and the end of the third locking bolt (72) away from the bolt head abuts against the ejector pin (73); By rotating the third locking bolt (72), the push pin (73) can slide along the second sliding groove and push the fourth locking plate (71), thereby causing the fourth locking plate (71) to abut against the abutting plate (431).

10. The inertial navigation bracket according to claim 9, characterized in that: A reset support (63) and a reset spring (64) are also provided on the second mounting ring (6); The reset support (63) is located on a side of the fourth locking plate (71) facing the abutment plate (431), and after the third locking bolt (72) unlocks the fourth locking plate (71), the reset spring (64) can push the fourth locking plate (71) away from the abutment plate (431).

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