Large radar dual-drive multi-flexible transmission device

Abstract

The present invention discloses a dual-drive, multi-flexible transmission device for a large radar, comprising a first drive mechanism, a second drive mechanism, a mounting assembly, and a large gear. One end of the first drive mechanism and the second drive mechanism are rotatably connected to the mounting assembly, and the other ends of the first drive mechanism and the second drive mechanism are flexibly connected to the mounting assembly. Both the first drive mechanism and the second drive mechanism comprise a drive unit, a drum gear shaft, and a pinion. The drive end of the drive unit is connected to the drum gear shaft, the inner ring of the pinion gear is spherically rotatable about the symmetry center point of the drum gear shaft and is connected to the drum gear shaft, and the outer ring of the pinion gear meshes with the large gear shaft. The present invention has the following beneficial effects: It improves the stability and reliability of the pitch system of a large, heavy-loaded radar.

Description

Technical Field

[0001] The present invention relates to the technical field of large-scale radar transmission, and in particular to a large-scale radar dual-drive multi-flexible transmission device. Background Art

[0002] The change of the pitch angle of the radar system is usually achieved through a large gear and a driving mechanism. Most traditional pitch driving mechanisms adopt fixed-axis rotation. For example, the announcement number is CN203178482U, a pitch driving mechanism of a radar transceiver unit, comprising a bracket (1), a driving device (2), a first connecting seat (3) and a second connecting seat (4); the first connecting seat (3) and the second connecting seat (4) are movable and coaxially mounted on the bracket (1); the driving device (2) is rigidly connected to the first connecting seat (3). For large-caliber, heavy-load radars, the diameter of the pitch gear is very large, and a multi-section assembly method is generally adopted. Due to manufacturing and installation errors, there are large end jumps and radial jumps. At the same time, due to factors such as wind load and temperature, there are structural deformations during the rotation of the large gear. It is difficult to ensure the reliability and stability of the transmission by adopting the traditional fixed-axis rotation method, which seriously affects the life of the radar.

[0003] The information disclosed in this background section is only intended to enhance understanding of the overall background of the invention and should not be considered as an admission or any form of suggestion that the information constitutes the prior art known to those skilled in the art. Summary of the Invention

[0004] The technical problem to be solved by the present invention is: how to solve the problem that the pitch gear of large and heavy-loaded radar adopts a multi-section splicing method, which is subject to manufacturing and installation errors and is easy to deform during rotation, and the fixed-axis rotation method is difficult to ensure the reliability and stability of transmission.

[0005] The present invention solves the above technical problems through the following technical means:

[0006] A large radar dual-drive multi-flexible transmission device includes a first drive mechanism, a second drive mechanism, a mounting assembly, and a large gear. One end of the first drive mechanism and the second drive mechanism are rotatably connected to the mounting assembly, and the other ends of the first drive mechanism and the second drive mechanism are flexibly connected to the mounting assembly.

[0007] The first driving mechanism and the second driving mechanism both include a driving part, a drum-shaped gear shaft, and a small gear. The driving end of the driving part is connected to the drum-shaped gear shaft. The inner ring of the small gear is connected to the drum-shaped gear shaft and can rotate spherically around the symmetrical center point of the drum-shaped gear shaft. The outer ring of the small gear is engaged with the large gear.

[0008] The present invention forms a dual-drive structure through the first drive mechanism and the second drive mechanism, which on the one hand improves the driving force, and on the other hand forms two supports to improve the support stability. Furthermore, the first drive mechanism and the second drive mechanism can rotate and flexibly connect the installation components, and at the same time, the inner ring of the small gear can spherically rotate around the symmetrical center point of the drum-shaped gear shaft and be connected to the drum-shaped gear shaft, which can enable the large gear and the small gear to be spherically adjusted within a certain range, forming adaptive support and flexible adjustment of errors caused by installation and manufacturing, and can achieve optimal meshing between the large gear and the small gear of the final transmission stage, thereby improving the stability and reliability of the large and heavy-loaded radar pitch system.

[0009] Preferably, the mounting assembly includes a mounting platform, a mounting frame, and a spring push rod. The bottom of the mounting frame can adjust the height and is connected to the middle of the mounting platform. The spring push rod connects the two ends of the mounting platform. One end of the first driving mechanism and one end of the second driving structure are rotatably connected to the top of the mounting frame through a pin shaft. The other end of the first driving mechanism and the other end of the second driving mechanism are rotatably connected to the top of the spring push rod through a pin shaft.

[0010] The meshing state of the final transmission gear can be finely adjusted by adjusting the installation height of the mounting bracket and the flexible support of the spring push rod, which effectively solves the problem of insufficient suspension thrust and difficulty in correction due to long-term operation of the device, and is easy to operate.

[0011] Preferably, the mounting platform is a rectangular plate, the bottom of the mounting frame is connected to the mounting platform via a plurality of adjusting screws, and there are four spring push rods, which are connected to the four corners of the mounting platform.

[0012] Preferably, the first driving mechanism and the second driving mechanism have the same structure, and the first driving mechanism and the second driving mechanism are symmetrically arranged along a vertical symmetry plane of the mounting assembly.

[0013] Preferably, the first drive mechanism and the second drive mechanism also include a gear box, the drive part is connected to the gear box, one end of the gear box is rotatably connected to the middle of the mounting assembly, the other end of the gear box is connected to the two ends of the mounting assembly, and the two ends of the drum-shaped gear shaft are connected to the gear box through bearings.

[0014] Preferably, the first drive mechanism and the second drive mechanism further include an internal gear, the outer ring of the internal gear is interference fit connected with the inner ring of the pinion, and the inner ring of the internal gear is a gear structure and meshes with the drum gear shaft.

[0015] Preferably, the first drive mechanism and the second drive mechanism further include ball bearings, which are located on both sides of the internal gear, the inner rings of the ball bearings are connected to both sides of the toothed portion of the drum-shaped gear shaft, and the outer rings of the ball bearings are connected to the inner ring of the pinion.

[0016] Preferably, the center of the ball bearing coincides with the symmetry center point of the internal gear.

[0017] Preferably, the first driving mechanism and the second driving mechanism further include rollers, the rollers are connected to both sides of the small gear via bolts, and the rollers are tangent to the outer edge track of the large gear.

[0018] During the rotation of the small gear and the large gear, the roller keeps in contact with the outer edge track of the large gear, so that the meshing state of the large gear and the small gear is always consistent.

[0019] Preferably, the driving part includes a motor and a reducer, the reducer is connected to the outside of the gear box, the motor is connected to the reducer, and one end of the drum gear shaft is connected to the reducer through a spline shaft.

[0020] The advantages of the present invention are:

[0021] (1) The present invention forms a dual-drive structure by the first drive mechanism and the second drive mechanism, which improves the driving force on the one hand and forms two supports on the other hand to improve the support stability. Furthermore, the first drive mechanism and the second drive mechanism can rotate and flexibly connect the installation components, and at the same time, the inner ring of the small gear can rotate spherically around the symmetrical center point of the drum-shaped gear shaft and connect with the drum-shaped gear shaft, which can make the large gear and the small gear spherically adjustable within a certain range, forming adaptive support and flexible adjustment of the errors caused by the installation and manufacturing, and can achieve the best meshing between the large gear and the small gear of the final transmission stage, thereby improving the stability and reliability of the large and heavy-loaded radar pitch system;

[0022] (2) By adjusting the installation height of the mounting bracket and the flexible support of the spring push rod, the meshing state of the final transmission gear can be finely adjusted, which effectively solves the problem of insufficient suspension thrust and difficulty in correction due to long-term operation of the device, and is easy to operate;

[0023] (3) During the rotation of the small gear and the large gear, the roller and the outer edge track of the large gear remain in contact, so that the meshing state of the large gear and the small gear is always consistent;

[0024] (4) The overall structure is simple, compact, and easy to disassemble and repair, and can be widely used in radar and other heavy machinery transmission fields. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1This is a schematic structural diagram of a large radar dual-drive multi-flexible transmission device according to an embodiment of the present invention;

[0026] Figure 2 Schematic diagram of the engagement state of a large radar dual-drive multi-flexible transmission device according to an embodiment of the present invention;

[0027] Figure 3 is a cross-sectional view of a first driving mechanism according to an embodiment of the present invention;

[0028] Numbers in the figure:

[0029] 1. First drive mechanism; 11. Drive unit; 111. Motor; 112. Reducer; 12. Drum gear shaft; 13. Pinion; 14. Internal gear; 15. Gearbox; 16. Ball bearing; 17. Roller; 18. Spherical roller bearing;

[0030] 2. Second driving mechanism;

[0031] 3. Install the assembly; 31. Install the platform; 32. Install the frame; 33. Spring push rod; 34. Adjust the screw;

[0032] 4. Big gear; 41. Outer edge track;

[0033] 5. First pin; DETAILED DESCRIPTION

[0034] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0035] Example 1:

[0036] like Figure 1 As shown, the large radar dual-drive multi-flexible transmission device includes a first drive mechanism 1, a second drive mechanism 2, a mounting assembly 3, and a large gear 4. One end of the first drive mechanism 1 and the second drive mechanism 2 are rotatably connected to the mounting assembly 3, while the other ends of the first drive mechanism 1 and the second drive mechanism 2 are flexibly connected to the mounting assembly 3. Both the first drive mechanism 1 and the second drive mechanism 2 are meshed with the large gear 4.

[0037] The structures of the first driving mechanism 1 and the second driving mechanism 2 are basically the same. This embodiment is described by taking the first driving mechanism 1 as an example.

[0038] The first driving mechanism 1 includes a driving portion 11, a crown gear shaft 12, a pinion 13, an internal gear 14, a gear box 15, a ball bearing 16, a roller 17, and a spherical roller bearing 18;

[0039] like Figure 3 As shown, the drive unit 11 includes a motor 111 and a reducer 112. The motor 111 and the reducer 112 are directly connected. The reducer 112 is installed on the gear box 15. The two ends of the drum gear shaft 12 are rotatably connected to the gear box 15 through spherical roller bearings 18. The drum gear shaft 12 can rotate around its own axis in the gear box 15. The shaft end of the drum gear shaft 12 is directly connected to the reducer 112 through a spline shaft. That is, the operation of the motor 111 drives the reducer 112 to rotate, thereby driving the drum gear shaft 12 to rotate. The outer side of the middle part of the drum gear shaft 12 has external teeth, and the vertical cross-section of this part can be seen to be arc-shaped.

[0040] The internal gear 14 is a cylindrical structure with internal teeth on its inner side. The internal teeth can engage with the middle outer gear box of the drum-shaped gear shaft 12. The outer side of the internal gear 14 is interference fit connected with the inner side of the pinion 13. The width of the internal gear 14 is slightly smaller than the width of the toothed part of the drum-shaped gear shaft 12.

[0041] The gearbox 15 is open at both the top and bottom, and its left and right ends are connected to the mounting assembly 3. Specifically, the right end of the gearbox 15 is connected to the middle of the mounting assembly 3 via a first pin 5, and the left end of the gearbox 15 is connected to both ends of the mounting assembly 3 via pins. The middle of the mounting assembly 3 is height-adjustable, and both ends of the mounting assembly 3 are elastically supported.

[0042] The ball bearings 16 are located on both sides of the internal gear 14. The inner ring of the ball bearing 16 is connected to both sides of the toothed portion of the drum gear shaft 12. The outer ring of the ball bearing 16 is fixed to the inner ring of the pinion 13 through a sleeve. The sphericity of the ball bearing 16 is at the symmetrical center point of the internal gear 14. The pinion 13 can rotate around the symmetrical center point of the internal gear 14 along the spherical surface of the ball bearing 16. The rotation angle is specifically calculated and determined based on the relevant parameters of the drum gear and the width of the internal gear 14. The allowable rotation angle in this embodiment is 2°, that is, the pinion 13 can rotate within a cone range with the center of the ball bearing 16 and an angle of 2.

[0043] Roller 17 is a disc with a hole in the center. Its radius is larger than that of pinion 13. Roller 17 is located on either side of pinion 13 and is fixed to pinion 13 with bolts or screws. Roller 17 rotates with pinion 13. Roller 17 is tangential to the outer edges of tracks 41 on either side of the toothed portion of gear 4. During rotation, roller 17 maintains contact with outer edges of tracks 41 of gear 4, ensuring consistent meshing between gear 4 and pinion 13.

[0044] The upper portion of the small gear 13 extends out of the gear box 15 and meshes with the large gear 4 .

[0045] When this embodiment works, Figure 2 、 Figure 3 As shown, motor 111 drives drum gear shaft 12 through speed reduction gear 112, which in turn drives the drum gear shaft 12. The drum gear portion of drum gear shaft 12 meshes with internal gear 14 fixed to pinion 13, thereby driving the rotation of pinion 13. The meshing between large gear 4 and pinion 13 also drives the rotation of large gear 4. During rotation, roller 17 maintains contact with the outer edge track 41 of large gear 4. The dual-drive structure formed by first drive mechanism 1 and second drive mechanism 2 improves driving force and provides two supports, enhancing support stability. Furthermore, first drive mechanism 1 and second drive mechanism 2 can rotate and flexibly connect to mounting assembly 3. Meanwhile, the inner ring of pinion 13 can spherically rotate about the symmetrical center point of drum gear shaft 12, connecting to drum gear shaft 12. This allows spherical adjustment of large gear 4 and pinion 13 within a certain range, creating adaptive support and flexible adjustment of installation and manufacturing errors. This ensures optimal meshing between large gear 4 and pinion 13 at the final transmission stage, thereby improving the stability and reliability of large, heavy-load radar elevation systems.

[0046] Example 2:

[0047] like Figure 1 As shown, based on the above embodiment 1, the mounting assembly 3 includes a mounting platform 31, a mounting frame 32, a spring push rod 33, and an adjusting screw 34;

[0048] The bottom of the mounting frame 32 can be height-adjusted and connected to the middle of the mounting platform 31. The spring push rod 33 connects the two ends of the mounting platform 31. The right end of the first driving mechanism 1 and the left end of the second driving structure 2 are rotatably connected to the top of the mounting frame 32 through the first pin shaft 5. The left end of the first driving mechanism 1 and the right end of the second driving mechanism 2 are rotatably connected to the top of the spring push rod 33 through the pin shaft.

[0049] The mounting platform 31 is a rectangular plate. The bottom of the mounting frame 32 is connected to the mounting platform 31 via a plurality of adjustment screws 34. By adjusting the degree of tightening of the adjustment screws 34, the distance between the bottom of the mounting frame 32 and the mounting platform 31 can be adjusted, thereby adjusting the height of the mounting frame 32. By adjusting the adjustment screws 34, the fixed height of the mounting frame 32 is changed, thereby changing the thrust of the spring push rod 33 and the meshing state of the final transmission gear.

[0050] Four spring push rods 33 are connected to the four corners of the mounting platform 31. The two spring push rods 33 on the left are connected to the gearbox 15 of the first drive mechanism 1, and the two spring push rods 33 on the right are connected to the gearbox 15 of the second drive mechanism 2. The thrust of the four spring push rods 33 forces the roller 17 to abut against the outer edge track 41 of the large gear 4. The spring push rods 33 provide the thrust for the first and second drive mechanisms to rotate about the pins.

[0051] The meshing state of the final transmission gear can be finely adjusted by adjusting the installation height of the mounting bracket and the flexible support of the spring push rod 33, which effectively solves the problem of insufficient suspension thrust and difficulty in correction due to long-term operation of the device, and is easy to operate.

[0052] The device has a simple and compact structural design and is easy to disassemble and maintain, and can be widely used in radar and other heavy machinery transmission fields.

[0053] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. Large radar dual-drive multi-flexible transmission device, characterized by: It includes a first drive mechanism, a second drive mechanism, a mounting assembly, and a large gear, wherein one end of the first drive mechanism and the second drive mechanism are rotatably connected to the mounting assembly, and the other ends of the first drive mechanism and the second drive mechanism are flexibly connected to the mounting assembly; The first drive mechanism and the second drive mechanism each include a drive unit, a drum-shaped gear shaft, and a pinion gear. The drive end of the drive unit is connected to the drum-shaped gear shaft. The inner ring of the pinion gear is connected to the drum-shaped gear shaft so as to be spherically rotatable about the symmetry center point of the drum-shaped gear shaft. The outer ring of the pinion gear is engaged with the large gear. The mounting assembly includes a mounting platform, a mounting frame, and a spring push rod. The bottom of the mounting frame is height-adjustable and connected to the middle of the mounting platform. The spring push rod connects both ends of the mounting platform. One end of the first driving mechanism and one end of the second driving mechanism are rotatably connected to the top of the mounting frame via a pin. The other end of the first driving mechanism and the other end of the second driving mechanism are rotatably connected to the top of the spring push rod via a pin. The first drive mechanism and the second drive mechanism also include an internal gear, the outer ring of the internal gear is interference fit connected to the inner ring of the pinion, the inner ring of the internal gear is a gear structure and meshes with the drum-shaped gear shaft; the first drive mechanism and the second drive mechanism also include ball bearings, the ball bearings are located on both sides of the internal gear, the inner rings of the ball bearings are connected to both sides of the toothed part of the drum-shaped gear shaft, and the outer rings of the ball bearings are connected to the inner ring of the pinion.

2. The large radar dual-drive multi-flexible transmission device according to claim 1, characterized in that: The mounting platform is a rectangular plate. The bottom of the mounting frame is connected to the mounting platform via a plurality of adjusting screws. There are four spring push rods, which are connected to the four corners of the mounting platform.

3. The large radar dual-drive multi-flexible transmission device according to claim 1, characterized in that: The first driving mechanism and the second driving mechanism have the same structure, and are symmetrically arranged along a vertical symmetry plane of the mounting assembly.

4. The large radar dual-drive multi-flexible transmission device according to claim 1, characterized in that: The first drive mechanism and the second drive mechanism also include a gear box, the drive part is connected to the gear box, one end of the gear box is rotatably connected to the middle part of the mounting assembly, the other end of the gear box is connected to the two ends of the mounting assembly, and the two ends of the drum-shaped gear shaft are connected to the gear box through bearings.

5. The large radar dual-drive multi-flexible transmission device according to claim 1, characterized in that: The center of the ball bearing coincides with the symmetry center point of the internal gear.

6. The large radar dual-drive multi-flexible transmission device according to claim 1, characterized in that: The first driving mechanism and the second driving mechanism further include rollers, which are connected to both sides of the small gear via bolts, and the rollers are tangent to the outer edge track of the large gear.

7. The large radar dual-drive multi-flexible transmission device according to claim 4, characterized in that: The driving part includes a motor and a reducer. The reducer is connected to the outside of the gear box. The motor is connected to the reducer. One end of the drum gear shaft is connected to the reducer through a spline shaft.

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