Connecting and sealing device for pan-tilt shield and shaft

Abstract

The utility model relates to the field of connecting and sealing devices, in particular to a connecting and sealing device for a holder shield and a shaft, which comprises a top plate. The lower end of the top plate is fixedly connected with a fixing cylinder, oiling grooves distributed at equal intervals in the circumferential direction are formed in the side portion of the fixing cylinder, and a shielding mechanism for shielding the oiling grooves is arranged on the side wall of the fixing cylinder. The protection ring is manually rotated to drive the shielding ring to rotate, after the shielding ring rotates, the first groove body corresponds to the oil injection groove, lubricating oil flows into the fourth groove body of the fixing ring through the first groove body and the oil injection groove and then is diffused to the outer surface of the sealing mechanism through the third groove body of the sealing body, and the spring in the sealing body pushes the steel ring to be tightly attached to the groove wall. Lubricating oil is guaranteed to be evenly distributed on the contact portion of the fixing ring and the holder protective cover assembly, rotating friction is reduced, abrasion of a sealing piece is delayed, meanwhile, the outer diameter of the fixing ring is larger than that of the cylinder, physical shielding is formed, dust and rainwater are effectively prevented from invading in cooperation with closed protection of the shielding mechanism on the oil injection groove, and sealing performance is enhanced while lubrication is conducted.

Description

Technical Field

[0001] The utility model belongs to the field of connection and sealing devices, and particularly relates to a connection and sealing device for a pan-tilt housing and a shaft. Background Art

[0002] As a key component for carrying camera equipment, sensors or other precision instruments in the fields of security monitoring, industrial automation, aerospace, etc., the core function of a pan-tilt is to achieve multi-angle rotation adjustment through a rotating shaft system to meet the monitoring or operation requirements in different scenarios. As an important structure for protecting the internal shaft system, drive mechanism and electronic components, the pan-tilt housing needs to effectively isolate external dust, rain, moisture and corrosive gases while ensuring the flexible rotation of the pan-tilt, so as to avoid problems such as shaft wear, lubrication failure or circuit failure caused by external environmental factors.

[0003] In the prior art, the connection and sealing structure between the pan-tilt housing and the rotating shaft usually adopts a single sealing ring, sealant or a simple dust-proof cover design. However, the traditional sealing ring is prone to wear or aging under long-term rotational friction during rotation, resulting in a decline in sealing performance. It is necessary to add lubricating oil in time. However, it is difficult for the connection and sealing device for the pan-tilt and the shaft in the prior art to quickly inject lubricating oil onto the sealing ring, and the sealing effect and rotational accuracy cannot be improved, which needs to be further improved. Summary of the Utility Model

[0004] In order to overcome the problem that it is difficult for the connection and sealing device for the pan-tilt and the shaft in the prior art to quickly inject lubricating oil onto the sealing ring and the sealing effect and rotational accuracy cannot be improved, therefore, a connection and sealing device for a pan-tilt housing and a shaft is proposed.

[0005] The technical solution of the utility model is as follows: A connection and sealing device for a pan-tilt housing and a shaft, comprising a top plate; a fixed cylinder is fixedly connected to the lower end of the top plate, and oil injection grooves are arranged on the side of the fixed cylinder at equal intervals in the circumferential direction, and a shielding mechanism for shielding the oil injection grooves is arranged on the side wall of the fixed cylinder;

[0006] A pan-tilt housing assembly is arranged at the lower end of the fixed cylinder, a sealing body is installed on the pan-tilt housing assembly, a third groove is opened at the upper end of the sealing body, a second groove is opened at the lower end of the third groove, a spring is fixedly connected to the bottom surface of the inner wall of the second groove, and a steel ring is fixedly connected to the upper end of the spring and slides on the inner wall of the second groove;

[0007] A fixed ring is fixedly connected to the lower part of the side wall of the fixed cylinder, the fixed cylinder and the fixed ring are integrally formed, a fourth groove is opened at the lower end of the fixed ring, the fourth groove communicates with the oil injection groove, and a sealing mechanism is jointly arranged on the inner walls of the third groove and the fourth groove;

[0008] A rotating mechanism is arranged on the top plate, and an external thread column is installed on the rotating mechanism and is threadedly connected to the pan-tilt housing assembly.

[0009] Furthermore, the shielding mechanism includes a protective ring, a shielding ring, a fixing ring, a first groove body and a rubber plug; the protective ring is threadedly installed on the side wall of the fixing cylinder, the shielding ring is sleeved on the side wall of the fixing cylinder, the upper end of the shielding ring fits with the lower end of the protective ring, the lower end of the shielding ring fits with the upper end of the fixing ring, and after the shielding ring rotates, the first groove body corresponds to the oil injection groove.

[0010] Furthermore, the pan-tilt shield assembly includes a cylinder body, a fixing plate, a pan-tilt bottom plate, an internal thread ring, a first wire groove, a sealing body, a second groove body, a spring and a steel ring; the cylinder body is arranged at the lower end of the fixing cylinder, the fixing plate is fixedly connected to the lower end of the cylinder body, the pan-tilt bottom plate is fixedly connected to the lower end of the fixing plate, the internal thread ring is fixedly connected to the lower end of the pan-tilt bottom plate, and the upper part of the inner wall of the cylinder body is fixedly connected to the lower end of the sealing body.

[0011] Furthermore, the sealing mechanism is composed of a first rubber ring and a second rubber ring, the first rubber ring is fixedly connected to the inner wall of the third groove body, the second rubber ring is fixedly connected to the inner wall of the fourth groove body, and the upper end of the first rubber ring fits with the lower end of the second rubber ring.

[0012] Furthermore, the sealing mechanism is composed of a first rubber ring, a second rubber ring, a first magnet ring and a second magnet ring; the second rubber ring is placed on the inner wall of the third groove body, the second rubber ring is of a hollow structure, the second magnet ring is fixedly connected to the inner wall of the hollow structure of the second rubber ring, the first rubber ring is placed on the inner wall of the fourth groove body, the first rubber ring is of a hollow structure, and the first magnet ring is fixedly connected to the inner wall of the hollow structure of the first rubber ring.

[0013] Furthermore, the rotating mechanism includes a box body, a motor, a main shaft, a connecting column and an external thread column; the box body is fixedly connected to the upper end of the top plate, the motor is fixedly connected to the inner wall of the box body, a through hole is formed through the upper end of the top plate, the output shaft of the motor passes through the through hole and is fixedly connected to the main shaft, the side wall of the main shaft fits with the inner wall of the fixing cylinder, the lower end of the main shaft is fixedly connected to the connecting column, the lower end of the connecting column is fixedly connected to the upper end of the external thread column, and the side wall of the external thread column is threadedly connected to the inner wall of the fixing plate.

[0014] Furthermore, there is a gap between the side wall of the output shaft of the motor and the inner wall of the through hole.

[0015] Furthermore, the outer diameter of the fixing ring is greater than the outer diameter of the cylinder body.

[0016] Furthermore, a first wire groove is formed through the lower end of the pan-tilt bottom plate, a second wire groove is formed through the lower end of the external thread column, the first wire groove communicates with the second wire groove, a third wire groove is formed through the upper end of the main shaft, and the second wire groove communicates with the third wire groove.

[0017] The beneficial effects of the present utility model:

[0018] 1. By setting up an occlusion mechanism, lubrication of the sealing area can be quickly achieved without disassembling components. During use, manually rotating the protective ring drives the occlusion ring to rotate. After the occlusion ring rotates, the first groove body corresponds to the oil injection groove, and lubricating oil flows into the fourth groove body of the fixed ring through the first groove body and the oil injection groove, and then diffuses to the outer surface of the sealing mechanism through the third groove body of the sealing body. The spring inside the sealing body pushes the steel ring against the groove wall, ensuring that the lubricating oil is evenly distributed at the contact part between the fixed ring and the pan-tilt housing assembly, reducing rotational friction and delaying the wear of the seal. At the same time, the outer diameter of the fixed ring is larger than that of the cylinder body, forming a physical occlusion. Cooperating with the occlusion mechanism to protect the oil injection groove, it effectively blocks the intrusion of dust and rainwater, strengthens the sealing performance while lubricating, and solves the problem in the prior art that it is difficult to quickly inject lubricating oil onto the sealing ring for the connection sealing device between the pan-tilt and the shaft, and it is impossible to improve the sealing effect and rotational accuracy.

[0019] 2. The rotating mechanism drives the main shaft through a motor, drives the external thread column to rotate through the connecting column, and is threadedly connected to the inner wall of the fixed disk of the pan-tilt housing assembly, realizing the stable rotation of the cylinder body. There is a gap between the output shaft of the motor and the inner wall of the through hole to avoid rigid friction. The side wall of the main shaft fits with the inner wall of the fixed cylinder to provide guiding support and reduce rotational eccentricity. In addition, the wire grooves on the pan-tilt bottom plate, the external thread column, and the main shaft are mutually connected to form an independent line channel, avoiding interference between the cable and the rotating components, and meeting the requirements of multiple scenarios.

[0020] 3. The second groove body and the spring steel ring structure of the sealing body can dynamically compensate for the wear of the seal. Even if there are small gaps in the rubber ring or rubber ring due to long-term use, the spring force can push the steel ring upward to maintain tight contact of the sealing surface. The occlusion mechanism, the sealing body, and the pan-tilt housing assembly adopt a modular design, reducing the maintenance cost and being relatively convenient to maintain. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 Shown is a three-dimensional structure schematic diagram of the present utility model;

[0022] Figure 2 Shown is a sectional view of the present utility model;

[0023] Figure 3 Shown is a three-dimensional structure schematic diagram of the pan-tilt housing assembly of the present utility model;

[0024] Figure 4 Shown is a sectional view of the first embodiment of the present utility model;

[0025] Figure 5 Shown is a sectional view of the second embodiment of the present utility model;

[0026] Figure 6 Shown is a three-dimensional structure schematic diagram of the pan-tilt bottom plate of the present utility model;

[0027] Figure 7 The figure shows a three-dimensional structural schematic diagram of the main shaft of the present utility model;

[0028] Figure 8 The figure shows a three-dimensional structural schematic diagram of the external thread column of the present utility model.

[0029] The reference signs in the drawings are: 1, top plate; 2, fixed cylinder; 3, protective ring; 4, shielding ring; 41, first groove; 42, rubber plug; 5, fixing ring; 6, pan-tilt hood assembly; 61, cylinder body; 62, fixing plate; 63, pan-tilt bottom plate; 64, internal thread ring; 65, first wire groove; 66, sealing body; 67, second groove; 68, spring; 69, steel ring; 7, third groove; 8, first rubber ring; 9, oil injection groove; 10, fourth groove; 11, second rubber ring; 12, first rubber ring; 13, second rubber ring; 14, first magnet ring; 15, second magnet ring; 16, box body; 17, motor; 18, through hole; 19, main shaft; 20, connecting column; 21, external thread column; 22, second wire groove; 23, third wire groove. Detailed implementation manners

[0030] The present utility model will be further described below in conjunction with the drawings and embodiments.

[0031] Please refer to Figures 1-8 , a connecting and sealing device for a pan-tilt hood and a shaft, comprising a top plate 1; a fixed cylinder 2 is fixedly connected to the lower end of the top plate 1, an oil injection groove 9 is arranged on the side of the fixed cylinder 2 at equal intervals in the circumferential direction, and a shielding mechanism for shielding the oil injection groove 9 is arranged on the side wall of the fixed cylinder 2;

[0032] A pan-tilt hood assembly 6 is arranged at the lower end of the fixed cylinder 2, a sealing body 66 is installed on the pan-tilt hood assembly 6, a third groove 7 is opened at the upper end of the sealing body 66, a second groove 67 is opened at the lower end of the third groove 7, a spring 68 is fixedly connected to the bottom surface of the inner wall of the second groove 67, and a steel ring 69 is fixedly connected to the upper end of the spring 68, and the steel ring 69 is slidably arranged on the inner wall of the second groove 67;

[0033] A fixing ring 5 is fixedly connected to the lower part of the side wall of the fixed cylinder 2, the fixed cylinder 2 and the fixing ring 5 are integrally formed, a fourth groove 10 is opened at the lower end of the fixing ring 5, the fourth groove 10 communicates with the oil injection groove 9, and a sealing mechanism is jointly arranged on the inner walls of the third groove 7 and the fourth groove 10;

[0034] A rotating mechanism is arranged on the top plate 1, an external thread column 21 is installed on the rotating mechanism, and the external thread column 21 is threadedly connected to the pan-tilt hood assembly 6.

[0035] During use, the external thread post 21 is threadedly connected to the pan-tilt shield assembly 6. At this time, the sealing mechanism seals the lower end of the fixing ring 5 and the upper end of the pan-tilt shield assembly 6. When lubrication is required at the sealed part, the shielding mechanism is manually rotated, and lubricating oil is injected into the oil injection groove 9. The lubricating oil will flow into the interior of the fourth groove body 10 through the oil injection groove 9, and then the lubricating oil will enter the interior of the third groove body 7, realizing lubrication of the sealing mechanism on the inner walls of the fourth groove body 10 and the third groove body 7, thereby reducing the frictional force when the pan-tilt shield assembly 6 rotates with the fixing ring 5, and facilitating the stable rotation of the pan-tilt shield assembly 6 on the premise of ensuring sealing.

[0036] Please refer to Figure 1 and Figure 2 In this embodiment, the shielding mechanism includes a protective ring 3, a shielding ring 4, a fixing ring 5, a first groove body 41, and a rubber plug 42. The protective ring 3 is threadedly installed on the side wall of the fixing cylinder 2. The shielding ring 4 is sleeved on the side wall of the fixing cylinder 2. The upper end of the shielding ring 4 is in contact with the lower end of the protective ring 3, and the lower end of the shielding ring 4 is in contact with the upper end of the fixing ring 5. After the shielding ring 4 rotates, the first groove body 41 corresponds to the oil injection groove 9. The threaded connection of the protective ring 3 to the fixing cylinder 2 and the arrangement of the shielding ring 4 in contact with the protective ring 3 and the fixing ring 5 form an adjustable oil injection channel. Rotating the shielding ring 4 to align the first groove body 41 with the oil injection groove 9 allows oil injection. When not injecting oil, the shielding ring 4 closes the oil injection groove 9, enabling lubrication of the sealed area without disassembling components, and effectively preventing dust and rainwater from entering the device through the oil injection groove 9, improving the dust and waterproof performance of the device.

[0037] Please refer to Figure 1 and Figure 3 In this embodiment, the pan-tilt shield assembly 6 includes a cylinder body 61, a fixing plate 62, a pan-tilt bottom plate 63, an internal thread ring 64, a first wire groove 65, a sealing body 66, a second groove body 67, a spring 68, and a steel ring 69. The cylinder body 61 is provided at the lower end of the fixing cylinder 2. The lower end of the cylinder body 61 is fixedly connected to the fixing plate 62. The lower end of the fixing plate 62 is fixedly connected to the pan-tilt bottom plate 63. The lower end of the pan-tilt bottom plate 63 is fixedly connected to the internal thread ring 64. The upper part of the inner wall of the cylinder body 61 is fixedly connected to the lower end of the sealing body 66, forming an integrated pan-tilt shield structure. The cylinder body 61 bears the fixing plate 62 and the pan-tilt bottom plate 63. The internal thread ring 64 is threadedly connected to the external thread post 21 to achieve rotational drive. The sealing body 66 is fixed to the upper part of the inner wall of the cylinder body 61. The second groove body 67, the spring 68, and the steel ring 69 inside it can cooperate with the sealing mechanism to achieve dynamic sealing and lubrication. The first wire groove 65 provides an installation channel for the circuit. Through the overall modular design, it is convenient for assembly and maintenance.

[0038] Please refer to Figure 1 , Figure 3 , Figure 7 and Figure 8, in this embodiment, the rotating mechanism includes a box body 16, a motor 17, a main shaft 19, a connecting column 20, and an external thread column 21; a box body 16 is fixedly connected to the upper end of the top plate 1, a motor 17 is fixedly connected to the inner wall of the box body 16, a through hole 18 is formed through the upper end of the top plate 1, the output shaft of the motor 17 passes through the through hole 18 and is fixedly connected to the main shaft 19, the side wall of the main shaft 19 is in contact with the inner wall of the fixed cylinder 2, a connecting column 20 is fixedly connected to the lower end of the main shaft 19, the lower end of the connecting column 20 is fixedly connected to the upper end of the external thread column 21, the side wall of the external thread column 21 is threadedly connected to the inner wall of the fixed disk 62. When the motor 17 is started, the external thread column 21 is driven to rotate through the main shaft 19 and the connecting column 20. The threaded connection between the external thread column 21 and the fixed disk 62 drives the pan-tilt shield assembly 6 to rotate. The contact between the side wall of the main shaft 19 and the inner wall of the fixed cylinder 2 provides guidance to ensure stable rotation. Through the setting of the gap between the output shaft of the motor 17 and the through hole 18, rigid friction is avoided, the driving resistance is reduced, and the rotation accuracy and stability during rotation are improved.

[0039] Please refer to Figure 1 and Figure 7 , in this embodiment, there is a gap between the side wall of the output shaft of the motor 17 and the inner wall of the through hole 18. The outer diameter of the fixed ring 5 is larger than that of the cylinder body 61, forming an "umbrella-shaped" shielding structure at the joint of the two, which can effectively prevent external dust, rain and other impurities from directly invading the sealed area. Cooperating with the shielding mechanism to protect the oil injection groove 9 further enhances the dust and waterproof ability of the device and extends the service life of the internal seals and rotating components.

[0040] Please refer to Figure 1 and Figure 3 , in this embodiment, the outer diameter of the fixed ring 5 is larger than the outer diameter of the cylinder body 61. The fixed ring 5 can shield the cylinder body 61, improving the dust protection at the joint of the fixed ring 5 and the cylinder body 61.

[0041] Please refer to Figure 1 and the figure. In this embodiment, a first wire groove 65 is formed through the lower end of the pan-tilt bottom plate 63, a second wire groove 22 is formed through the lower end of the external thread column 21, the first wire groove 65 and the second wire groove 22 communicate with each other, a third wire groove 23 is formed through the upper end of the main shaft 19, the second wire groove 22 and the third wire groove 23 communicate with each other. The first wire groove 65, the second wire groove 22, and the third wire groove 23 are mutually connected to form an independent line channel from the top plate 1 to the pan-tilt bottom plate 63, enabling signal or power supply cables to safely pass through the inside of the rotating components, and the installation of the wires is relatively convenient.

[0042] Embodiment 1: Please refer to Figure 1As shown in the figure, in this embodiment, the sealing mechanism is composed of a first rubber ring 8 and a second rubber ring 11. The first rubber ring 8 is fixedly connected to the inner wall of the third groove 7, and the second rubber ring 11 is fixedly connected to the inner wall of the fourth groove 10. The upper end of the first rubber ring 8 is in contact with the lower end of the second rubber ring 11. The first rubber ring 8 and the second rubber ring 11 are in contact with each other up and down, forming a double sealing surface between the third groove 7 and the fourth groove 10. The contact area can effectively prevent external impurities from invading. After the lubricating oil is injected, a lubricating film can be formed on the contact surface between the two, reducing the friction when the fixed ring 5 rotates with the pan-tilt housing assembly 6. The structure is simple and the sealing and lubricating effects are good.

[0043] Embodiment 2: Please refer to Figure 5 , the present application provides a technical solution: Please refer to Figure 1 As shown in the figure, in this embodiment, the sealing mechanism is composed of a first rubber ring 12, a second rubber ring 13, a first magnet ring 14 and a second magnet ring 15; the second rubber ring 13 is placed on the inner wall of the third groove 7. The second rubber ring 13 has a hollow structure, and the second magnet ring 15 is fixedly connected to the inner wall of the hollow structure of the second rubber ring 13. The first rubber ring 12 is placed on the inner wall of the fourth groove 10. The first rubber ring 12 has a hollow structure, and the first magnet ring 14 is fixedly connected to the inner wall of the hollow structure of the first rubber ring 12. By using the magnetic adsorption effect of the first magnet ring 14 and the second magnet ring 15, the first rubber ring 12 and the second rubber ring 13 are closely attached. The hollow structure can store lubricating oil and evenly spread it to the sealing surface, which can not only dynamically compensate for the wear gap of the rubber ring through magnetism, but also realize the continuous lubrication of the lubricating oil, adapt to the long-term high-load rotation scenario, and improve the durability of the sealing mechanism.

[0044] Working principle: When in use, the internal thread ring 64 is used to connect the pan-tilt camera, and the external thread column 21 is threadedly connected to the inner wall of the fixed disk 62 in the pan-tilt housing assembly 6, so that the fourth groove 10 at the lower end of the fixed ring 5 is docked with the third groove 7 at the upper end of the sealing body 66 in the pan-tilt housing assembly 6;

[0045] At this time, the sealing mechanism (if it is Embodiment 1, the upper end of the first rubber ring 8 on the inner wall of the third groove 7 is in contact with the lower end of the second rubber ring 11 on the inner wall of the fourth groove 10; if it is Embodiment 2, the first magnet ring 14 in the first rubber ring 12 on the inner wall of the fourth groove 10 and the second magnet ring 15 in the second rubber ring 13 on the inner wall of the third groove 7 are magnetically adsorbed, so that the first rubber ring 12 and the second rubber ring 13 are closely attached), realizing the sealing of the lower end of the fixed ring 5 and the upper end of the pan-tilt housing assembly 6. At the same time, inside the sealing body 66, the spring 68 at the bottom surface of the inner wall of the second groove 67 pushes the steel ring 69 to slide and closely adhere to the inner wall of the second groove 67 to assist in sealing;

[0046] When lubrication is required at the sealed part, manually rotate the protective ring 3 threadedly installed on the side wall of the fixed cylinder 2, driving the shielding ring 4 sleeved on the side wall of the fixed cylinder 2 to rotate, so that the first groove 41 on the shielding ring 4 corresponds to the oil injection groove 9 on the side of the fixed cylinder 2. Inject lubricating oil from the first groove 41 into the interior of the oil injection groove 9. The lubricating oil flows into the interior of the fourth groove 10 at the lower end of the fixed ring 5 through the oil injection groove 9, and then enters the interior of the third groove 7 from the fourth groove 10. During the flowing process, the lubricating oil lubricates the sealing mechanism on the inner walls of the fourth groove 10 and the third groove 7. The arrangement of the spring 68 pushing the steel ring 69 can ensure the uniform distribution of the lubricating oil, thereby reducing the friction force when the cylinder body 61 in the pan-tilt shield assembly 6 rotates with the fixed ring 5;

[0047] When the rotating mechanism works, the motor 17 in the box body 16 at the upper end of the top plate 1 starts. The output shaft of the motor 17 passes through the through hole 18 of the top plate 1 to drive the main shaft 19 to rotate. The side wall of the main shaft 19 fits with the inner wall of the fixed cylinder 2 to play a guiding role. The connecting column 20 at the lower end of the main shaft 19 drives the external thread column 21 to rotate. The external thread column 21 drives the pan-tilt shield assembly 6 to rotate through threaded connection with the inner wall of the fixed disk 62. The gap between the side wall of the output shaft of the motor 17 and the inner wall of the through hole 18 avoids rigid friction and ensures smooth rotation;

[0048] In addition, the first wire groove 65 at the lower end of the pan-tilt bottom plate 63, the second wire groove 22 at the lower end of the external thread column 21, and the third wire groove 23 at the upper end of the main shaft 19 communicate with each other, providing an independent channel for signal or power cables from the top plate 1 to the pan-tilt bottom plate 63, avoiding interference between the cables and the rotating parts;

[0049] The outer diameter of the fixed ring 5 is larger than the outer diameter of the cylinder body 61, which can shield the cylinder body 61. Cooperating with the shielding mechanism, the oil injection groove 9 is closed by the protective ring 3 and the shielding ring 4 in the non-oil injection state, effectively blocking the intrusion of external dust, rain and other impurities, and improving the dust and waterproof performance of the device.

Claims

1. A sealing device for connecting a pan / tilt head shield and a shaft, comprising a top plate (1); characterized in that: A fixed cylinder (2) is fixedly connected to the lower end of the top plate (1), and a side portion of the fixed cylinder (2) is provided with oil injection grooves (9) distributed equidistantly along the circumferential direction, and a shielding mechanism for shielding the oil injection grooves (9) is provided on the side wall of the fixed cylinder (2); A pan / tilt shield assembly (6) is provided at the lower end of the fixed cylinder (2); a sealing body (66) is installed on the pan / tilt shield assembly (6); a third groove (7) is provided at the upper end of the sealing body (66); a second groove (67) is provided at the lower end of the third groove (7); a spring (68) is fixedly connected to the bottom surface of the inner wall of the second groove (67); a steel ring (69) is fixedly connected to the upper end of the spring (68); and the steel ring (69) is slidably arranged on the inner wall of the second groove (67); A fixing ring (5) is fixedly connected to the lower part of the side wall of the fixing cylinder (2); the fixing cylinder (2) and the fixing ring (5) are integrally formed; a fourth groove body (10) is provided at the lower end of the fixing ring (5); the fourth groove body (10) and the oil injection groove (9) are interconnected; and a sealing mechanism is provided on the inner walls of the third groove body (7) and the fourth groove body (10); A rotating mechanism is provided on the top plate (1), an external thread column (21) is installed on the rotating mechanism, and the external thread column (21) is threadedly connected to the pan / tilt cover assembly (6).

2. A sealing device for connecting a pan / tilt head shield and a shaft according to claim 1, characterized in that: The shielding mechanism comprises a protective ring (3), a shielding ring (4), a fixing ring (5), a first groove body (41) and a rubber plug (42); the protective ring (3) is threadedly mounted on the side wall of the fixing cylinder (2), the shielding ring (4) is sleeved on the side wall of the fixing cylinder (2), the upper end of the shielding ring (4) is fitted with the lower end of the protective ring (3), the lower end of the shielding ring (4) is fitted with the upper end of the fixing ring (5), and after the shielding ring (4) is rotated, the first groove body (41) and the oil filling groove (9) correspond to each other.

3. The connection sealing device for a pan / tilt cover and a shaft according to claim 1, characterized in that: The pan / tilt cover assembly (6) comprises a cylinder (61), a fixed plate (62), a pan / tilt base plate (63), an internal threaded ring (64), a first wire groove (65), a sealing body (66), a second groove body (67), a spring (68) and a steel ring (69); the cylinder (61) is arranged at the lower end of the fixed cylinder (2); the fixed plate (62) is fixedly connected to the lower end of the cylinder (61); the pan / tilt base plate (63) is fixedly connected to the lower end of the fixed plate (62); the internal threaded ring (64) is fixedly connected to the lower end of the pan / tilt base plate (63); and the upper part of the inner wall of the cylinder (61) is fixedly connected to the lower end of the sealing body (66).

4. The connection sealing device for a pan / tilt head shield and a shaft according to claim 1, characterized in that: The sealing mechanism is composed of a first rubber ring (8) and a second rubber ring (11); the first rubber ring (8) is fixedly connected to the inner wall of the third groove body (7); the second rubber ring (11) is fixedly connected to the inner wall of the fourth groove body (10); and the upper end of the first rubber ring (8) and the lower end of the second rubber ring (11) are in contact with each other.

5. The connection sealing device for a pan / tilt cover and a shaft according to claim 1, characterized in that: The sealing mechanism is composed of a first rubber ring (12), a second rubber ring (13), a first magnet ring (14) and a second magnet ring (15); the second rubber ring (13) is placed on the inner wall of the third slot body (7), the second rubber ring (13) is a hollow structure, and the second magnet ring (15) is fixedly connected to the inner wall of the hollow structure of the second rubber ring (13); the first rubber ring (12) is placed on the inner wall of the fourth slot body (10), the first rubber ring (12) is a hollow structure, and the first magnet ring (14) is fixedly connected to the inner wall of the hollow structure of the first rubber ring (12).

6. The connection sealing device for the pan / tilt cover and the shaft according to claim 3, characterized in that: The rotating mechanism comprises a box body (16), a motor (17), a main shaft (19), a connecting column (20) and an externally threaded column (21); the box body (16) is fixedly connected to the upper end of the top plate (1), the motor (17) is fixedly connected to the inner wall of the box body (16), a through hole (18) is penetrated through the upper end of the top plate (1), the output shaft of the motor (17) passes through the through hole (18) and is fixedly connected to the main shaft (19), the side wall of the main shaft (19) is fitted with the inner wall of the fixed cylinder (2), the connecting column (20) is fixedly connected to the lower end of the main shaft (19), the lower end of the connecting column (20) is fixedly connected to the upper end of the externally threaded column (21), and the side wall of the externally threaded column (21) is threadedly connected to the inner wall of the fixed plate (62).

7. A sealing device for connecting a pan / tilt head shield and a shaft according to claim 6, characterized in that: There is a gap between the side wall of the output shaft of the motor (17) and the inner wall of the through hole (18).

8. The connection sealing device for a pan / tilt head shield and a shaft according to claim 1, characterized in that: The outer diameter of the fixing ring (5) is greater than the outer diameter of the cylinder (61).

9. The connection sealing device for a pan / tilt head shield and a shaft according to claim 6, characterized in that: A first wire groove (65) is formed through the lower end of the pan head bottom plate (63), a second wire groove (22) is formed through the lower end of the external threaded column (21), the first wire groove (65) and the second wire groove (22) are interconnected, and a third wire groove (23) is formed through the upper end of the main shaft (19), the second wire groove (22) and the third wire groove (23) are interconnected.

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