A device for adjusting the installation of a toothed arc

Abstract

The application relates to a gear-arc mounting adjusting device and belongs to the gear-arc mounting technology. A support is rotationally connected to an ear axle hole on a landing gear at one end; a gear is rotationally connected to the other end of the support; a gear-arc body is preassembled on the landing gear, one side of the gear-arc body is lapped on the support and engaged with the gear; a dial gauge is connected to the support, a probe of the dial gauge is aligned with a side end reference surface of the gear-arc body; a first adjusting member is connected between the gear-arc body and the landing gear, the first adjusting member is used for adjusting the connecting position of the gear-arc body on the landing gear; and a second adjusting member is connected between the gear-arc body and the landing gear, the second adjusting member is used for adjusting the engagement gap between the gear-arc body and the gear. The application guarantees the perpendicularity of the side end reference surface of the gear-arc body to the ear axle hole on the landing gear, guarantees the engagement gap, avoids the engagement gap being too large or too small, and ensures that the positions of the contact points of the gear-arc body and the gear in the tooth height and tooth width directions meet the design standards.

Description

Technical Field

[0001] This application relates to the field of toothed arc mounting technology, and in particular to a toothed arc mounting adjustment device. Background Technology

[0002] The installation of the elevation gear on the artillery is a relatively complex and important process, which directly affects the operation and firing accuracy of the artillery. The installation of the elevation gear involves installing the gear on the artillery's landing gear and using the elevation mechanism drive gear to engage the gear, thereby raising and lowering the landing gear.

[0003] Traditional tooth arc installation and adjustment methods, after initially determining the installation position of the tooth arc, require manual adjustment of the tooth arc's position because the meshing clearance and meshing position of the gears meshing with it cannot be determined. This human error means that there is no correct reference standard for the installation of the tooth arc, and during the assembly process, it is often impossible to guarantee the perpendicularity of the tooth arc relative to the trunnion hole and the meshing clearance.

[0004] Insufficient perpendicularity of the tooth arc will lead to a decrease in transmission efficiency, causing abnormal noise and accelerating the wear of the tooth arc; excessive meshing clearance will cause unstable gear transmission, while insufficient clearance may cause gear jamming or damage, greatly increasing the repetitive workload of operators during assembly, and will also damage the initial state of the tooth arc, causing deformation, shortening the service life of the tooth arc, and affecting product quality. Summary of the Invention

[0005] This application provides a toothed arc mounting and adjustment device to solve the problem in related technologies where human error leads to the lack of a correct reference standard for toothed arc installation, making it difficult to guarantee the perpendicularity and meshing clearance of the toothed arc relative to the trunnion hole during assembly.

[0006] This application provides a toothed arc mounting adjustment device, including: a bracket, one end of which is used for rotatable connection with the trunnion hole on the landing gear;

[0007] A gear, which is rotatably connected to the other end of the bracket;

[0008] The toothed arc body is pre-installed on the landing gear, and one side of the toothed arc body overlaps the bracket and meshes with the gear;

[0009] A dial indicator is attached to the bracket, with the probe of the dial indicator aligned with the reference surface at the side end of the toothed arc body.

[0010] A first adjusting member is connected between the toothed arc body and the landing gear, and the first adjusting member is used to adjust the connection position of the toothed arc body on the landing gear.

[0011] A second adjusting member is connected between the toothed arc body and the landing gear, and the second adjusting member is used to adjust the meshing clearance between the toothed arc body and the gear.

[0012] By adopting the above technical solution: by rotatably connecting the bracket to the landing gear trunnion hole, fixing the dial indicator to one side of the bracket body, aligning the dial indicator probe with the reference surface at the side end of the gear body, rotating the bracket, the gear meshes with the gear body, and by reading the dial indicator reading, the installation position of the gear body is finely adjusted using the first adjusting component to ensure the perpendicularity of the reference surface at the side end of the gear body to the landing gear trunnion hole; the meshing position is adjusted using the second adjusting component to ensure that the installation radius R of the gear body meets the design standard, ensuring the meshing clearance and avoiding excessive or insufficient meshing clearance, and ensuring that the contact point between the gear body and the gear meets the design standard in the tooth height and tooth width directions.

[0013] In some embodiments, the first adjusting member includes a mounting bolt, the toothed body is provided with a mounting hole, one end of the mounting bolt is connected to the mounting hole, the other end is connected to the landing gear, and the mounting bolt is clearance-fitted with the inner wall of the mounting hole.

[0014] By adopting the above technical solution, the mounting bolt is fitted with the inner wall of the mounting hole with a clearance fit, allowing the mounting bolt to be radially fine-tuned within the mounting hole, thus changing the installation position of the toothed arc body, which is convenient to operate.

[0015] In some embodiments, the second adjustment member includes an adjustment pad located between the landing gear and the toothed body.

[0016] By adopting the above technical solution, the meshing position of the tooth arc body and the gear is adjusted by adding or removing adjustment shims, so that the installation radius R of the tooth arc body meets the design standard.

[0017] In some embodiments, a gear shaft is connected to the bracket, and first bearings are provided at both ends of the gear shaft. The gear shaft is rotatably connected to the bracket through the first bearings, and the gear is mounted on the gear shaft.

[0018] By adopting the above technical solution: the gear shaft is rotatably connected to the bracket through the first bearing, and the gear is mounted on the gear shaft. The structure of the gear shaft and the first bearing is simple and reliable.

[0019] In some embodiments, a bearing cover is provided at one end of the gear shaft located on the first bearing, and the bearing cover abuts against the outer wall of the bracket.

[0020] By adopting the above technical solution, the bearing cover is connected and abutted against the outer wall of the bracket, thus preventing the first bearing from being exposed and affecting its service life.

[0021] In some embodiments, one end of the bracket is connected to a clamp, a central shaft is fitted inside the clamp, both ends of the central shaft are connected to trunnion holes on the landing gear, and a rotating component is provided on the central shaft. The rotating component is connected inside the clamp to allow the bracket to rotate between the central shaft and the central shaft.

[0022] By adopting the above technical solution, the rotating component is connected inside the clamp, thereby effectively enabling the bracket to rotate between the central shaft and the central shaft, and facilitating the connection between the central shaft and the trunnion hole on the landing gear.

[0023] In some embodiments, the rotating assembly includes:

[0024] Bearing housing, which is fitted onto the central shaft;

[0025] The second bearing is mounted on the bearing housing and is connected inside the clamp.

[0026] By adopting the above technical solution, the second bearing is connected inside the clamp, effectively connecting the support to the central shaft. Under the action of the bearing seat and the bearing, one end of the support can rotate on the trunnion on the landing gear, making the structure reliable.

[0027] In some embodiments, a fixing sleeve is connected to the second bearing, and a first locking nut is connected to both ends of the fixing sleeve on the bearing seat, and a screw is connected between the first locking nut and the fixing sleeve.

[0028] By adopting the above technical solution: a fixed sleeve is connected to the second bearing, and a first locking nut is connected to both ends of the fixed sleeve on the bearing seat to limit the second bearing. Under the action of the screw, the structure of the second bearing is reliable, and the first locking nut is prevented from loosening.

[0029] In some embodiments, retaining rings are fitted at both ends of the bearing housing on the central shaft, and the retaining rings abut against the bearing housing.

[0030] By adopting the above technical solution, the retaining ring abuts against the bearing housing, thereby effectively limiting the bearing housing and preventing it from moving during use.

[0031] In some embodiments, threaded sleeves are threaded to both ends of the central shaft, and the threaded sleeves abut against the trunnions on the landing gear.

[0032] By adopting the above technical solution, the use of threaded sleeves makes it easy to install and remove the central shaft from the trunnion hole on the landing gear.

[0033] The beneficial effects of the technical solution provided in this application include:

[0034] This application provides a toothed arc mounting and adjustment device. During operation, the bracket is rotatably connected to the trunnion hole on the landing gear. After the bracket is fixed, a dial indicator is fixed to one side of the bracket body, with the dial indicator probe aligned with the reference surface at the side end of the toothed arc body. The bracket is rotated, and the gear meshes with the toothed arc body. By reading the dial indicator, the installation position of the toothed arc body is finely adjusted using the first adjusting component, ensuring the perpendicularity of the reference surface at the side end of the toothed arc body to the trunnion hole of the landing gear. The meshing position is adjusted using the second adjusting component, so that the installation radius R of the toothed arc body meets the design standard, ensuring the meshing clearance and avoiding excessive or insufficient meshing clearance. This ensures that the contact point between the toothed arc body and the gear meets the design standard in the tooth height and tooth width directions. Attached Figure Description

[0035] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0036] Figure 1 This is a schematic diagram of the overall structure provided for an embodiment of this application;

[0037] Figure 2 This is a schematic diagram of the structure of the display stand provided in an embodiment of this application;

[0038] Figure 3 Provided for the embodiments of this application Figure 2 Schematic diagram of the cross-sectional structure at point AA;

[0039] Figure 4 Provided for the embodiments of this application Figure 2 Schematic diagram of the cross-sectional structure at point BB;

[0040] Figure label:

[0041] 1. Bracket; 100. Landing gear; 101. Dial indicator; 102. Gear body; 103. Clamp; 2. Central shaft; 3. Threaded sleeve; 4. Bearing housing; 5. First locking nut; 6. Fixing sleeve; 7. Bearing cover; 70. Fixing bolt; 8. Gear; 9. Gear shaft; 10. Operating lever; 11. Screw; 12. Mounting bolt; 120. Adjusting shim; 13. Spring washer; 14. Flat washer; 15. First bearing; 16. Second bearing; 17. Flat key; 18. Second locking nut; 19. Handle; 20. Retaining ring. Detailed Implementation

[0042] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0043] This application provides a toothed arc installation and adjustment device, which can solve the problem that human error causes the toothed arc to lack a correct reference standard for installation. During the assembly process, it is often impossible to guarantee the perpendicularity of the toothed arc relative to the trunnion hole and the meshing clearance.

[0044] See Figures 1 to 4 As shown, this application provides a geared arc mounting adjustment device, including: a bracket 1, a gear 8, a geared arc body 102, a dial indicator 101, a first adjusting member, and a second adjusting member. One end of the bracket 1 is rotatably connected to a trunnion hole on the landing gear 100. The bracket 1 serves as a reference for the installation of the geared arc body 102. The gear 8 is rotatably connected to the other end of the bracket 1. The geared arc body 102 is pre-installed on the landing gear 100, and one side of the geared arc body 102 overlaps the bracket 1. The device is adjusted by rotation... Move the support 1 to engage the gear 8 with the toothed arc body 102. Then, connect the dial indicator 101 to the support 1. The connection position of the dial indicator 101 is determined according to the installation of the toothed arc body 102. Therefore, the dial indicator 101 is detachably connected to the support 1. However, it is important to ensure that the probe of the dial indicator 101 is aligned with the reference surface on the side of the toothed arc body 102. With the toothed arc body 102 and the gear 8 engaged, the installation accuracy of the toothed arc body 102 can be quickly detected by reading the dial indicator 101. Furthermore, for convenient operation of the support 1, a handle 19 and an operating rod 10 are threadedly connected to the support 1 near the gear 8. The handle 19 is perpendicular to the operating rod 10 for easy operation.

[0045] Then, a first adjusting member is connected between the toothed arc body 102 and the landing gear 100, and a second adjusting member is connected between the toothed arc body 102 and the landing gear 100. The reading of the dial indicator 101 is read, and the first adjusting member is used to fine-tune the connection position of the toothed arc body 102 on the landing gear 100, ensuring the perpendicularity of the side end reference surface of the toothed arc body 102 to the trunnion hole. The second adjusting member is used to adjust the meshing clearance between the toothed arc body 102 and the gear 8, ensuring that the installation radius R of the toothed arc body 102 meets the design standard, guaranteeing the meshing clearance between the toothed arc body 102 and the gear 8, avoiding excessive or insufficient meshing clearance, and ensuring that the contact point between the toothed arc and the gear 8 meets the design standard in the tooth height and tooth width directions.

[0046] In this application, the bracket 1 serves as a reference for the installation of the toothed arc body 102. The toothed arc body 102 and the gear 8 mesh, and the dial indicator 101 is used to measure the meshing accuracy of the toothed arc body 102 to ensure the correct installation of the toothed arc body 102. This ensures the perpendicularity of the reference surface of the side end of the toothed arc body 102 relative to the trunnion hole on the landing gear 100, as well as the meshing clearance and meshing position between the gear 8 and the toothed arc body 102. This reduces the workload of the operator in assembly, increases the service life of the toothed arc body 102, and reduces the occurrence of product quality problems to a certain extent.

[0047] In this application, the first adjusting component includes a mounting bolt 12. The gear body 102 has a mounting hole. One end of the mounting bolt 12 is connected to the mounting hole, and the other end is connected to the landing gear 100. The mounting bolt 12 has a clearance fit with the inner wall of the mounting hole. The clearance fit can include, but is not limited to, a mounting hole diameter of 19mm on the gear body 102 and a mounting bolt diameter of 18mm, allowing for a 1mm adjustment range during installation of the gear body 102, with further radial fine-tuning along the mounting hole. The second adjusting component includes an adjusting shim 120, located between the landing gear 100 and the gear body 102. The adjusting shim 120 is connected to the gap between the trunnion plate of the landing gear 100 and the gear body 102 via a snap-fit ​​connection. By adding or removing the adjusting shim 120, the meshing position of the gear body 102 and the gear 8 is adjusted, ensuring that the installation radius R of the gear meets the design standards.

[0048] During operation, the bracket 1 is rotated via handle 19 to engage gear 8 with the toothed arc body 102. During engagement, the installation accuracy of the toothed arc body 102 can be quickly checked by reading the dial indicator 101. The installation position of the toothed arc body 102 is then finely adjusted radially along the mounting hole to ensure the perpendicularity of the side reference surface of the toothed arc body 102 to the trunnion hole. The meshing position between the toothed arc body 102 and gear 8 is adjusted by adding or removing adjusting shims 120, ensuring that the installation radius R of the toothed arc body 102 meets the design standard, guaranteeing the meshing clearance and preventing it from being too large or too small. This ensures that the contact point between the toothed arc body 102 and gear 8 meets the design standards in the tooth height and tooth width directions. This operation reduces the workload of the operator, improves production efficiency, increases the service life of the toothed arc body 102, and improves product quality to a certain extent.

[0049] In this application, in order to facilitate the rotatable connection of gear 8 to bracket 1, gear shaft 9 is connected to one end of bracket 1 away from landing gear 100. The middle part of bracket 1 is hollow, and gear shaft 9 is mounted on bracket 1. First bearings 15 are provided at both ends of gear shaft 9. Bracket 1 is provided with connecting holes that are adapted to the first bearings 15. The first bearings 15 are connected in the connecting holes, so that gear shaft 9 and bracket 1 are rotatably connected through the first bearings 15. Gear 8 is fitted on gear shaft 9, and the rotation direction of gear 8 is the same as the rotation direction of bracket 1. The structure of gear shaft 9 and first bearing 15 is simple and reliable.

[0050] In this application, gear 8 is connected to gear shaft 9 by a flat key 17, and then a second locking nut 18 is connected to both ends of gear 8 on gear shaft 9. The second locking nut 18 includes, but is not limited to, a double nut self-locking structure, thereby ensuring that the assembly structure of gear 8 connected to gear shaft 9 is stable, reducing axial movement, and making the structure reliable.

[0051] In this application, to further ensure the stable rotation of the gear shaft 9, a bearing cover 7 is provided at one end of the gear shaft 9 located at the first bearing 15. After the gear shaft 9 is installed on the frame via the first bearing 15, the bearing cover 7 is connected and abuts against the outer wall of the bracket 1. This prevents the first bearing 15 from being exposed, thus affecting its service life. Furthermore, to fix the bearing cover 7, a fixing bolt 70 is connected between the bearing cover 7 and the bracket 1. A spring washer 13 and a flat washer 14 are also connected to the fixing bolt 70 on the outside of the bracket 1. The structure is simple and the connection is reliable.

[0052] In this application, to further facilitate the rotation of the support 1, a clamp 103 is connected to one end of the support 1. The clamp 103 consists of two semi-circular clamps, which are connected by connecting parts including but not limited bolts. When the support 1 is connected to the trunnion hole on the landing gear 100, a central shaft 2 is fitted inside the clamp 103. Then, both ends of the central shaft 2 are connected to the trunnion hole on the landing gear 100. A rotating component is provided on the central shaft 2, and the rotating component is connected inside the clamp 103, thereby effectively enabling the support 1 to rotate between the support 1 and the central shaft 2. Furthermore, the central shaft 2 has a simple structure, and its axis is perpendicular to the rotation axis of the support 1. In order to facilitate the connection of the central shaft 2 to the trunnion hole on the landing gear 100, threaded sleeves 3 are threaded to both ends of the central shaft 2. During the connection process, first connect one end of the central shaft 2 to the right trunnion hole on the landing gear 100, then connect the central shaft 2 together with the rotating component to the clamp 103, then connect the other end of the central shaft 2 to the left trunnion hole on the landing gear 100, and finally connect the threaded sleeves 3 to both ends of the central shaft 2 and make the threaded sleeves 3 abut against the trunnion on the landing gear 100. The central shaft 2 is easy to install and has a reliable structure.

[0053] When it is necessary to disassemble the central shaft 2, disconnect the threaded sleeve 3, then remove the central shaft 2 from the trunnion hole on the landing gear 100, and disconnect the clamp 103 from the rotating assembly. In addition, to facilitate tightening the threaded sleeve 3, a handle 19 is also connected to the threaded sleeve 3, which makes operation convenient and reduces the workload of the operator during the assembly process.

[0054] In this application, the rotating assembly includes a bearing housing 4 and a second bearing 16. The bearing housing 4 is fitted onto the central shaft 2; the second bearing 16 is mounted on the bearing housing 4. By opening the two semi-circular clamps of the clamp 103 and then connecting the second bearing 16 inside the clamp 103, the second bearing 16 and the gear 8 are aligned on the center line of the bracket 1, effectively connecting the bracket 1 to the central shaft 2. Under the action of the bearing housing 4 and the second bearing 16, one end of the bracket 1 can rotate on the trunnion of the landing gear 100. The rotation of the bracket 1 can adjust the meshing state between the gear 8 and the gear body 102, thereby further adjusting the installation accuracy of the gear body 102.

[0055] In this application, in order to ensure the connection stability of the second bearing 16, a fixing sleeve 6 is connected to the second bearing 16, and a first locking nut 5 is connected to both ends of the fixing sleeve 6 on the bearing seat 4 to limit the second bearing 16. Furthermore, a screw 11 is connected between the first locking nut 5 and the fixing sleeve 6 to prevent the first locking nut 5 from loosening, thereby effectively improving the connection stability of the second bearing 16.

[0056] In this application, retaining rings 20 are also fitted on both ends of the bearing housing 4 on the central shaft 2. The retaining rings 20 abut against the bearing housing 4, thereby effectively limiting the bearing housing 4 and preventing it from moving during use. When it is necessary to disassemble the central shaft 2, the retaining rings 20 can be removed from the central shaft 2, which is convenient.

[0057] The implementation principle of this application embodiment is as follows: When the toothed arc body 102 needs to be installed on the landing gear 100, the central shaft 2 is installed in the trunnion hole on the landing gear 100, the central shaft 2 is locked using the threaded sleeve 3, and the dial indicator 101 is fixed to one side of the bracket 1, with the probe of the dial indicator 101 aligned with the reference surface on the side end of the toothed arc body 102. The bracket 1 serves as a reference for the installation of the toothed arc body 102. Rotating the bracket 1 via handle 19 engages the gear 8 with the toothed arc body 102. During engagement, the installation accuracy of the toothed arc body 102 can be quickly checked by reading the dial indicator 101. The installation position of the toothed arc body 102 is then finely adjusted radially along the mounting hole to ensure the perpendicularity of the toothed arc side reference surface to the trunnion hole. Adjusting the meshing position between the toothed arc body 102 and the gear 8 by adding or removing adjusting shims 120 ensures that the installation radius R of the toothed arc meets the design standard, guaranteeing the meshing clearance and preventing it from being too large or too small. This ensures that the contact point between the toothed arc body 102 and the gear 8 meets the design standards in the tooth height and tooth width directions. The bracket 1, dial indicator 101, and gear 8 ensure the correct installation of the toothed arc body 102, reduce the operator's assembly workload, increase the service life of the toothed arc body 102, and to some extent reduce product quality problems.

[0058] In the description of this application, it should be noted that the terms "upper," "lower," etc., indicating the orientation or positional relationship are 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. Unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0059] It should be noted that in this application, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0060] The above description is merely a specific embodiment of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A tooth arc mounting adjustment device, characterized by, include: The bracket (1) has one end for rotatable connection with the trunnion hole on the landing gear (100); Gear (8), which is rotatably connected to the other end of the bracket (1); The toothed arc body (102) is pre-installed on the landing gear (100), and one side of the toothed arc body (102) overlaps the bracket (1) and meshes with the gear (8); A dial indicator (101) is connected to the bracket (1), and the probe of the dial indicator (101) is aligned with the reference surface of the side end of the toothed arc body (102). A first adjusting member is connected between the toothed arc body (102) and the landing gear (100), and the first adjusting member is used to adjust the connection position of the toothed arc body (102) on the landing gear (100); The second adjusting member is connected between the toothed arc body (102) and the landing gear (100), and the second adjusting member is used to adjust the meshing clearance between the toothed arc body (102) and the gear (8); The first adjusting component includes a mounting bolt (12), and the toothed arc body (102) is provided with a mounting hole. One end of the mounting bolt (12) is connected to the mounting hole, and the other end is connected to the landing gear (100). The mounting bolt (12) is clearance-fitted with the inner wall of the mounting hole. The second adjusting member includes an adjusting shim (120) located between the landing gear (100) and the toothed body (102); The gear (8) meshes with the tooth arc body (102), and the installation radius R of the tooth arc body (102) meets the design standard by reading the dial indicator (101).

2. A tooth arc mounting adjustment device as claimed in claim 1, characterized in that: The bracket (1) is connected to a gear shaft (9), and the two ends of the gear shaft (9) are provided with first bearings (15). The gear shaft (9) is rotatably connected to the bracket (1) through the first bearings (15), and the gear (8) is fitted on the gear shaft (9).

3. A tooth arc mounting adjustment device as claimed in claim 2, wherein: A bearing cover (7) is provided on one end of the gear shaft (9) located at the first bearing (15), and the bearing cover (7) abuts against the outer wall of the bracket (1).

4. A rack mounting adjustment device as claimed in claim 1, wherein: One end of the bracket (1) is connected to a clamp (103), and a central shaft (2) is fitted inside the clamp (103). Both ends of the central shaft (2) are connected to the trunnion holes on the landing gear (100). A rotating component is provided on the central shaft (2), and the rotating component is connected inside the clamp (103) to allow the bracket (1) to rotate between the central shaft (2).

5. A rack mounting adjustment device as claimed in claim 4, wherein: The rotating assembly includes: Bearing housing (4), which is fitted onto the central shaft (2); The second bearing (16) is mounted on the bearing housing (4) and is connected inside the clamp (103).

6. A rack mounting adjustment device as claimed in claim 5, wherein: A fixing sleeve (6) is connected to the second bearing (16), and a first locking nut (5) is connected to both ends of the fixing sleeve (6) on the bearing seat (4). A screw (11) is connected between the first locking nut (5) and the fixing sleeve (6).

7. The toothed arc mounting and adjusting device as described in claim 5, characterized in that: Retaining rings (20) are fitted on both ends of the central shaft (2) located at the bearing seat (4), and the retaining rings (20) abut against the bearing seat (4).

8. The toothed arc mounting and adjusting device as described in claim 4, characterized in that: The two ends of the central shaft (2) are threadedly connected to threaded sleeves (3), and the threaded sleeves (3) abut against the trunnions on the landing gear (100).

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