Compact high-precision double-shaft holder

Abstract

The utility model relates to the technical field of holders, and particularly discloses a compact high-precision double-shaft holder which comprises an angle adjusting seat, a holder base and a table top, the table top is embedded in the top of the holder base, inner gear rings are fixedly arranged on the two sides of the inner wall of the angle adjusting seat, and a shaft rod is rotatably arranged on the inner wall of a containing groove in a penetrating mode. Gear bodies are coaxially arranged at the two ends of the shaft rod and meshed with the inner gear ring, an electric push rod and a servo motor are fixedly arranged on the two sides of the inner wall of the containing groove respectively, a push rod of the electric push rod is coaxially and rotationally connected with the shaft sleeve through a rotating base, and a motor shaft of the servo motor is sleeved with the shaft sleeve. According to the technical scheme, the shaft sleeve is controlled to move transversely through the electric push rod, meshing of the first gear and the fourth gear or meshing of the second gear and the third gear can be switched at will, and therefore double-shaft adjustment of the plane angle and the pitching angle of the table top can be achieved only through one servo motor, and the effect that the structure is compact can be achieved; and gear transmission has the advantage of high precision.

Description

Technical Field

[0001] The utility model relates to the technical field of pan platforms, in particular to a compact high-precision dual-axis pan platform. Background Art

[0002] A dual-axis gimbal is a mechanical device used to stabilize a camera or other device, usually consisting of two axes: a horizontal axis and a vertical axis. They usually use motors and gyroscopes to maintain balance, thereby ensuring that the device can capture stable images, videos, or achieve stable movement of components during motion or other vibrations. After searching the publication number 202111575416.2, a compact, high-precision single-axis gimbal is disclosed, including a base, a double-row ball bearing assembly is provided in the base, and a rotatable table with a dial is provided on the upper end surface of the base. The above patent discloses a compact single-axis gimbal. Due to the need to meet the dual-axis gimbal, the traditional design requires the design of two separate servo motors to separately control the plane rotation and pitch angle adjustment of the dual-axis gimbal. The dual-motor design will increase the volume of the gimbal structure, making it difficult to achieve a compact structure. Therefore, we propose a compact, high-precision dual-axis gimbal. Utility Model Content

[0003] The purpose of the utility model is to provide a compact high-precision dual-axis pan / tilt platform, which solves the problems raised in the background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a compact high-precision dual-axis pan-tilt head, comprising an angle adjustment seat, a pan-tilt head base and a table top, the table top is inlaid on the top of the pan-tilt head base, both sides of the inner wall of the angle adjustment seat are fixedly provided with internal gear rings, a receiving groove is provided at the bottom of the pan-tilt head base, a shaft rod is rotatably provided through the inner wall of the receiving groove, both ends of the shaft rod are coaxially provided with gear bodies, the gear bodies are meshed with the internal gear ring, both ends of the shaft rod are connected through the side wall of the angle adjustment seat, an electric push rod and a servo motor are respectively fixedly provided on both sides of the inner wall of the receiving groove, the push rod of the electric push rod is coaxially rotatably connected with the shaft sleeve through a rotating seat, the shaft sleeve is sleeved on the outside of the motor shaft of the servo motor, gear one and gear two are fixedly provided on the outside of the shaft sleeve, and gear three is fixedly provided in the middle of the shaft rod;

[0005] The table top is dynamically connected to the sleeve through a transmission structure. The transmission structure includes a large gear fixed to the bottom of the table top and a bevel gear transmission mechanism. The bevel gear transmission mechanism includes a shaft body 1 and a shaft body 2 which are vertically arranged to each other. A small gear meshing with the large gear is arranged on the top of the shaft body 1, a bevel gear 1 is arranged on the bottom of the shaft body 1, and a gear 4 and a bevel gear 2 meshing with the bevel gear 1 are coaxially arranged on the shaft body 2.

[0006] As a preferred implementation of the technical solution of the present application, a convex ring strip is fixedly arranged between the table top and the large gear, a concave ring groove is opened on the inner side wall of the top of the gimbal base, and the convex ring strip is embedded in the concave ring groove.

[0007] As a preferred implementation of the technical solution of the present application, the rotating seat includes a fixed seat and a rotating table. The fixed seat is rotatably connected to the rotating table through a bearing, the push rod of the electric push rod is fixedly connected to the fixed seat through bolts, and the rotating table is fixedly connected to one end of the sleeve through bolts.

[0008] As a preferred implementation of the technical solution of the present application, a groove is provided on the inner wall of the sleeve, an extension shaft is coaxially fixedly provided on the motor shaft of the servo motor, and a convex strip which is inlaid and matched with the groove is fixedly provided on the surface of the extension shaft.

[0009] As a preferred implementation of the technical solution of the present application, two support frames of the same size are symmetrically arranged on the top of the gimbal base about the vertical center line, bearings are embedded inside the support frames, and the shaft sleeves are embedded and matched with the bearings inside the support frames.

[0010] As a preferred implementation of the technical solution of the present application, a damping bearing is provided at the penetration point between the shaft rod and the inner wall of the accommodating groove, and the shaft rod is embedded in the inner ring of the damping bearing.

[0011] As a preferred implementation of the technical solution of the present application, shaft body 1 is rotatably connected to the top of the gimbal base, and shaft body 2 is rotatably connected to the inner wall of the accommodating groove.

[0012] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0013] The technical solution of the present application controls the lateral movement of the shaft sleeve through an electric push rod, and can arbitrarily switch the meshing of gear one with gear four or the meshing of gear two with gear three, thereby realizing dual-axis adjustment of the plane angle and pitch angle of the table with only one servo motor, which is conducive to achieving a compact structure, and the gear transmission has the advantage of high precision. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Other features, objects and advantages of the present invention will become more apparent by reading the detailed description of non-limiting embodiments with reference to the following drawings:

[0015] Figure 1 A three-dimensional diagram of a compact high-precision dual-axis pan / tilt head of the utility model;

[0016] Figure 2 It is a partial cross-sectional view of a compact high-precision dual-axis pan / tilt head of the utility model;

[0017] Figure 3 It is a structural schematic diagram of the transmission structure of the utility model;

[0018] Figure 4 It is a schematic diagram of the assembly of the internal gear ring and the gear body of the utility model.

[0019] In the figure: 1. Angle adjustment seat; 101. Internal gear ring; 2. Pan head base; 201. Concave ring groove; 202. Accommodating groove; 3. Table top; 301. Convex ring strip; 4. Shaft; 401. Gear three; 402. Gear body; 5. Servo motor; 6. Bushing; 601. Gear one; 602. Gear two; 7. Support frame; 8. Electric push rod; 801. Rotating seat; 9. Transmission structure; 901. Large gear; 902. Small gear; 903. Shaft body one; 904. Bevel gear one; 905. Shaft body two; 906. Bevel gear two; 907. Gear four. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0021] Embodiment 1, as Figure 1-4 As shown, the utility model provides a technical solution: a compact high-precision dual-axis pan-tilt head, comprising an angle adjustment seat 1, a pan-tilt head base 2 and a table top 3, the table top 3 is inlaid on the top of the pan-tilt head base 2, both sides of the inner wall of the angle adjustment seat 1 are fixedly provided with an inner gear ring 101, a receiving groove 202 is provided at the bottom of the pan-tilt head base 2, a shaft rod 4 is rotatably provided through the inner wall of the receiving groove 202, both ends of the shaft rod 4 are coaxially provided with a gear body 402, the gear body 402 is meshed with the inner gear ring 101, both ends of the shaft rod 4 are connected through the side wall of the angle adjustment seat 1, an electric push rod 8 and a servo motor 5 are fixedly provided on both sides of the inner wall of the receiving groove 202, the push rod of the electric push rod 8 is coaxially rotatably connected with a shaft sleeve 6 through a rotating seat 801, the shaft sleeve 6 is sleeved on the outside of the motor shaft of the servo motor 5, a gear one 601 and a gear two 602 are fixedly provided on the outside of the shaft sleeve 6, and a gear three 401 is fixedly provided in the middle of the shaft rod 4;

[0022] The table top 3 is dynamically connected to the sleeve 6 through a transmission structure 9. The transmission structure 9 includes a large gear 901 fixed to the bottom of the table top 3 and a bevel gear transmission mechanism. The bevel gear transmission mechanism includes a shaft body 903 and a shaft body 2 905 which are vertically arranged. A small gear 902 meshing with the large gear 901 is arranged on the top of the shaft body 1 903, a bevel gear 1 904 is arranged at the bottom of the shaft body 1 903, and a gear 4 907 and a bevel gear 2 906 meshing with the bevel gear 1 904 are coaxially arranged on the shaft body 2 905.

[0023] In a specific embodiment of the present invention, damping bearings are provided at the connection between the shaft 4 and the two side walls of the bottom of the pan / tilt base 2, so that when the gear three 401 and the gear two 602 are not engaged, the pan / tilt base 2 can maintain the pitch angle unchanged, the electric push rod 8 and the servo motor 5 are both regulated by independent controllers (not shown in the figure), the power supply of the electric push rod 8 and the servo motor 5 is obtained through wires, the shaft sleeve 6 can be laterally displaced outside the motor shaft of the servo motor 5, and the positions of the gear one, gear two, gear three and gear four are set as follows: when the gear one 601 is engaged with the gear four 907, the gear two 602 is staggered with the gear three 401, and when the gear two 602 is engaged with the gear three 401, the gear one 601 is staggered with the gear three 401. When gear 4 907 is staggered and gear 1 601 is meshed with gear 4 907, the servo motor 5 can drive gear 4 907 to rotate after it is started, thereby synchronously driving bevel gear 2 906, bevel gear 1 904, and small gear 902 to rotate, and finally the plane angle of the table 3 can be adjusted by rotating the large gear 901. When gear 2 602 is meshed with gear 3 401, since the angle adjustment seat 1 is stationary and the gear body 402 is restricted by the inner gear ring 101 and cannot move, the pan-tilt base 2 will make a pitch motion around the stationary shaft 4 when the servo motor 5 is started, thereby adjusting the pitch angle of the table 3. The forward and reverse rotation and speed of the servo motor 5 can control the pan-tilt base 2 to make a pitch or elevation motion and the speed of the motion.

[0024] In the preferred technical solution, a convex ring strip 301 is fixedly arranged between the table top 3 and the large gear 901, a concave ring groove 201 is opened on the inner side wall of the top of the gimbal base 2, and the convex ring strip 301 is embedded in the concave ring groove 201. The convex ring strip 301 cooperates with the concave ring groove 201 to ensure that the table top 3 is not easily separated from the gimbal base 2.

[0025] In the preferred technical solution, the rotating seat 801 includes a fixed seat and a rotating table. The fixed seat is rotatably connected to the rotating table through a bearing. The push rod of the electric push rod 8 is fixedly connected to the fixed seat through bolts, and the rotating table is fixedly connected to one end of the sleeve 6 through bolts, thereby preventing the motor shaft of the servo motor 5 from driving the sleeve 6 to rotate and affecting the normal operation of the electric push rod 8.

[0026] In the preferred technical solution, a groove is provided on the inner wall of the sleeve 6, and an extension shaft is coaxially fixedly provided on the motor shaft of the servo motor 5. A convex strip which fits in the groove is fixedly provided on the surface of the extension shaft, and the extension shaft allows the sleeve 6 to have enough space for translation.

[0027] In the preferred technical solution, two support frames 7 of the same size are symmetrically arranged on the top of the gimbal base 2 about the vertical center line. Bearings are embedded inside the support frames 7. The sleeve 6 is embedded and connected with the bearings inside the support frames 7. The inner ring of the bearing can be used for the sleeve 6 to rotate, and a gap of 1 mm is reserved between the inner ring of the bearing and the sleeve 6 to facilitate the translation of the sleeve 6.

[0028] In the preferred technical solution, a damping bearing is provided at the penetration point between the shaft rod 4 and the inner wall of the accommodating groove 202, the shaft rod 4 is embedded in the inner ring of the damping bearing, and a damping bearing is provided at the connection between the shaft rod 4 and the two side walls of the bottom of the gimbal base 2. The damping bearing will generate resistance when the shaft rod 4 and the gimbal base 2 rotate relative to each other, so that when gear three 401 and gear two 602 are not engaged, the gimbal base 2 can maintain the pitch angle unchanged.

[0029] In the preferred technical solution, shaft body 1 903 is rotatably connected to the top of the gimbal base 2, a bearing is provided at the penetration point between shaft body 1 903 and the gimbal base 2, shaft body 2 905 is rotatably connected to the inner wall of the accommodating groove 202, and a bearing is provided at the connection point between shaft body 2 905 and the accommodating groove 202.

[0030] Working principle: The electric push rod 8 is used to control the translation of the sleeve 6, so that the gear one 601 is meshed with the gear four 907. At this time, the gear two 602 is staggered with the gear three 401. When the servo motor 5 is started, it can drive the gear four 907 to rotate, thereby synchronously driving the bevel gear two 906, the bevel gear one 904, and the small gear 902 to rotate, and finally the plane angle adjustment of the table 3 can be adjusted by the rotation of the large gear 901. The controller controls the push rod of the electric push rod 8 to retract, so that the sleeve 6 moves to the left, so that the gear one 601 is meshed with the gear four 907. At this time, the gear two 602 is staggered with the gear three 401. Since the angle adjustment seat 1 is stationary and the gear body 402 is restricted by the inner gear ring 101 and cannot move, the pan-tilt base 2 will do a pitch motion around the stationary shaft rod 4 when the servo motor 5 is started, so that the pitch angle of the table 3 is adjusted.

Claims

1. A compact high-precision dual-axis gimbal, characterized by: The invention comprises an angle adjustment seat (1), a pan head base (2) and a table top (3), wherein the table top (3) is inlaid on the top of the pan head base (2), inner toothed rings (101) are fixedly arranged on both sides of the inner wall of the angle adjustment seat (1), a receiving groove (202) is provided at the bottom of the pan head base (2), a shaft (4) is rotatably arranged through the inner wall of the receiving groove (202), gear bodies (402) are coaxially arranged at both ends of the shaft (4), the gear body (402) is meshed with the inner toothed ring (101), and the gear body (402) is meshed with the inner toothed ring (101). Both ends of the shaft rod (4) are connected to the side wall of the angle adjustment seat (1); an electric push rod (8) and a servo motor (5) are fixedly arranged on both sides of the inner wall of the accommodating groove (202); the push rod of the electric push rod (8) is coaxially rotatably connected with the shaft sleeve (6) through a rotating seat (801); the shaft sleeve (6) is sleeved on the outside of the motor shaft of the servo motor (5); a gear 1 (601) and a gear 2 (602) are fixedly arranged on the outside of the shaft sleeve (6); and a gear 3 (401) is fixedly arranged in the middle of the shaft rod (4); The table top (3) is dynamically connected to the shaft sleeve (6) via a transmission structure (9), wherein the transmission structure (9) comprises a large gear (901) fixed to the bottom of the table top (3) and a bevel gear transmission mechanism, wherein the bevel gear transmission mechanism comprises a shaft body (903) and a shaft body (905) arranged perpendicularly to each other, wherein a small gear (902) meshing with the large gear (901) is arranged at the top of the shaft body (903), a bevel gear (904) is arranged at the bottom of the shaft body (903), and a gear (907) and a bevel gear (906) meshing with the bevel gear (904) are coaxially arranged on the shaft body (905).

2. A compact high-precision dual-axis pan / tilt head according to claim 1, characterized in that: A convex ring strip (301) is fixedly arranged between the table top (3) and the large gear (901), a concave ring groove (201) is provided on the inner side wall of the top of the pan / tilt base (2), and the convex ring strip (301) is embedded in the concave ring groove (201).

3. A compact high-precision dual-axis pan / tilt head according to claim 1, characterized in that: The rotating seat (801) comprises a fixed seat and a rotating platform, the fixed seat is rotatably connected to the rotating platform via a bearing, the push rod of the electric push rod (8) is fixedly connected to the fixed seat via a bolt, and the rotating platform is fixedly connected to one end of the shaft sleeve (6) via a bolt.

4. A compact high-precision dual-axis pan / tilt head according to claim 1, characterized in that: The inner wall of the shaft sleeve (6) is provided with a groove, and an extension shaft is coaxially fixedly arranged on the motor shaft of the servo motor (5), and a convex strip which is inlaid and matched with the groove is fixedly arranged on the surface of the extension shaft.

5. The compact high-precision dual-axis pan / tilt head according to claim 1, characterized in that: Two support frames (7) of the same size are symmetrically arranged on the top of the pan / tilt base (2) about the vertical center line, a bearing is embedded in the support frame (7), and the shaft sleeve (6) is embedded and matched with the bearing in the support frame (7).

6. A compact high-precision dual-axis pan / tilt head according to claim 1, characterized in that: A damping bearing is provided at the point where the shaft rod (4) and the inner wall of the accommodating groove (202) penetrate each other, and the shaft rod (4) is embedded in the inner ring of the damping bearing.

7. A compact high-precision dual-axis pan / tilt head according to claim 1, characterized in that: The first shaft (903) is rotatably connected to the top of the pan / tilt base (2), and the second shaft (905) is rotatably connected to the inner wall of the accommodating groove (202).

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