Self-inflating air pressure holder

Abstract

The utility model discloses a self-inflating air pressure cradle head, which comprises an inner cylinder body, an outer cylinder body, an outer cylinder body and an inner cylinder body, wherein a support is fixedly arranged at the top end of the inner cylinder body in a sealed manner, a piston is fixedly arranged at the bottom end of the inner cylinder body in a sealed manner, and a core cylinder is coaxially arranged in the inner cylinder body; the outer barrel is in sliding sleeve connection with the bottom end of the inner barrel, and a piston rod is coaxially arranged in the outer barrel; the one-way ventilation mechanism is arranged at the top end of the piston rod and the bottom end of the core cylinder; and the adjusting control assembly is arranged on the support. According to the air pressure holder, air inflation can be completed without additional air inflation equipment, and the use convenience of the air pressure holder is improved.

Description

Technical Field

[0001] This utility model relates to the field of gimbal technology, and in particular to a self-inflating pneumatic gimbal. Background Technology

[0002] A pan-tilt head is a support device for mounting a camera. A pneumatic pan-tilt head uses compressed air (such as an air pump or cylinder) to inflate it, offsetting the camera's weight and facilitating camera position adjustments. However, pneumatic pan-tilt heads require carrying inflation equipment each time they are used, which is inconvenient. Therefore, a self-inflating pneumatic pan-tilt head is designed, allowing for manual inflation without the need for additional equipment, thus improving the ease of use. Utility Model Content

[0003] In view of the above-mentioned defects or deficiencies in the prior art, it is desirable to provide a self-inflating pneumatic gimbal that can be inflated without the need for additional inflation equipment, thereby improving the convenience of using the pneumatic gimbal.

[0004] This utility model provides a self-inflatable pneumatic gimbal, comprising:

[0005] The inner cylinder has a support fixedly installed at its top and a piston fixedly installed at its bottom. A core cylinder is installed inside the inner cylinder, and the top of the core cylinder is sealed to the support. A cavity C is formed between the inner cylinder and the core cylinder.

[0006] An outer cylinder is slidably sleeved with the bottom end of the inner cylinder, and a piston rod is provided inside the outer cylinder. A first inflation channel is formed axially inside the piston rod. The bottom end of the piston rod is fixedly connected to the bottom end of the outer cylinder through an air inlet assembly, and the first inflation channel is connected to the outside. The top end of the piston rod seals through the piston and extends into the core cylinder. A cavity A is formed above the piston rod in the core cylinder, and a cavity B is formed below the top end of the piston rod.

[0007] A one-way ventilation mechanism is provided at the top of the piston rod and the bottom of the core cylinder. When the inner cylinder rises relative to the outer cylinder, air enters the cavity A through the first inflation channel. The cavity A is sealed and separated from the cavity B. When the inner cylinder descends relative to the outer cylinder, the air in the cavity A cannot enter the first inflation channel. The cavity A is connected to the cavity B, and the air in the cavity B enters the cavity C.

[0008] An adjustment and control component, mounted on the support, is used to control the connection and closure of cavity A and cavity C.

[0009] Furthermore, the one-way ventilation mechanism includes:

[0010] The first one-way ventilation component is fixedly installed at the top of the piston rod and connected to the first inflation channel. Air enters the cavity A through the first inflation channel.

[0011] The second one-way ventilation component is sealed and fixedly disposed around the periphery of the first one-way ventilation component. When the inner cylinder rises relative to the outer cylinder, the cavity A and the cavity B are sealed and separated. When the inner cylinder descends relative to the outer cylinder, the cavity A and the cavity B are connected.

[0012] The third one-way ventilation component is fixedly installed at the bottom end of the core tube, allowing only the air in cavity B to enter cavity C.

[0013] Furthermore, the first one-way ventilation assembly includes an inflation valve fixedly disposed at the top end of the piston rod. The top end of the inflation valve is provided with an assembly hole, and the bottom of the assembly hole is provided with an air vent that communicates with the top end of the first inflation channel. A pressure block is separately disposed inside the assembly hole, and a sealing gasket is fixedly disposed at the bottom end of the pressure block. A stop bar is fixedly disposed above the pressure block inside the assembly hole.

[0014] Furthermore, the second one-way ventilation component includes a first partition sleeve fixedly sleeved around the periphery of the first one-way ventilation component, and an annular groove is formed around the middle of the first partition sleeve, and a first sealing ring is sleeved inside the annular groove;

[0015] The outer periphery of the first separator sleeve is provided with a plurality of first through grooves evenly distributed above the annular groove; the outer periphery of the first separator sleeve is provided with a plurality of second through grooves evenly distributed below the annular groove, and the second through grooves are connected to the annular groove.

[0016] Furthermore, the third one-way ventilation assembly includes a second partition sleeve fixedly disposed on the top of the piston. The bottom end of the core cylinder is sealed and fixedly connected to the second partition sleeve. The top of the second partition sleeve is provided with a sealing groove communicating with the cavity C. A sealing ball is disposed in the sealing groove. The bottom end of the sealing groove has a conical inner diameter and is connected to the cavity B through a second inflation channel.

[0017] Furthermore, the air intake assembly includes an end cap fixedly disposed at the bottom end of the outer cylinder, and the bottom end of the piston rod is sealed and fixedly connected to the end cap; an air intake channel communicating with the first inflation channel is opened on one side of the end cap, and an air intake valve communicating with the air intake channel is fixedly disposed on one side of the end cap.

[0018] Furthermore, the adjustment and control assembly includes a plunger. A control air passage is provided on one side of the support, which is simultaneously connected to cavity A and cavity C. The plunger is slidably inserted into the control air passage. A second sealing ring is fitted on the plunger to seal and separate cavity A and cavity C, and a third sealing ring is fitted on the plunger to seal and separate cavity C from the outside. A positioning groove is provided on the outer wall of the plunger. A positioning pin is fixedly provided on the inner wall of the control air passage, which slides and engages with the positioning groove. An exhaust channel is provided axially inside the plunger. A threaded hole is provided at the outer end of the exhaust channel. An exhaust hole is provided radially on both sides of the threaded hole, which passes through the plunger. An exhaust knob is threadedly connected to the threaded hole. A fourth sealing ring is provided between the end of the exhaust knob and the exhaust channel.

[0019] Furthermore, a guide assembly is provided at the top of the outer cylinder; the guide assembly includes a plurality of guide seats evenly distributed around the periphery of the outer cylinder, the guide seats having mounting square holes in the vertical direction, the outer cylinder having clearance square holes corresponding to the mounting square holes, each mounting square hole having a guide wheel, the guide wheel passing through the clearance square hole and abutting against the outer wall of the inner cylinder.

[0020] Furthermore, a bracket is fixedly provided on the top of the support.

[0021] Furthermore, a handrail is provided around the periphery of the support, and the handrail is fixedly connected to the support through several connecting rods.

[0022] Compared with the prior art, the beneficial effects of this utility model are:

[0023] The pneumatic gimbal of this invention is equipped with an inner cylinder, piston, core cylinder, outer cylinder, piston rod, and one-way ventilation mechanism. It uses mechanical cooperation to achieve self-inflation of the pneumatic gimbal, which has a good inflation effect and does not require carrying inflation equipment, thus improving the convenience of using the pneumatic gimbal.

[0024] It should be understood that the description in this utility model description section is not intended to limit the key or essential features of the embodiments of this utility model, nor is it intended to restrict the scope of this utility model. Other features of this utility model will become readily apparent from the following description. Attached Figure Description

[0025] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0026] Figure 1 This is a schematic diagram of the structure of a pneumatic gimbal;

[0027] Figure 2 This is a top-view structural diagram of the air pressure gimbal;

[0028] Figure 3 for Figure 2 Schematic diagram of the cross-sectional structure at point AA;

[0029] Figure 4 for Figure 2 Schematic diagram of the cross-sectional structure at point BB;

[0030] Figure 5 This is a schematic diagram of the structure of the first one-way ventilation component and the second one-way ventilation component;

[0031] Figure 6 This is a cross-sectional structural diagram of the first one-way ventilation component and the second one-way ventilation component.

[0032] Figure 7 This is a schematic diagram of the third one-way ventilation component;

[0033] Figure 8 This is a schematic diagram of the cross-sectional structure of the third one-way ventilation component;

[0034] Figure 9 A schematic diagram of the adjustment control component;

[0035] Figure 10 A cross-sectional structural diagram of the adjustment control component.

[0036] The diagram labels are as follows: 1. Inner cylinder; 2. Outer cylinder; 3. Air intake assembly; 4. First one-way ventilation assembly; 5. Second one-way ventilation assembly; 6. Third one-way ventilation assembly; 7. Adjustment and control assembly; 8. Guide assembly;

[0037] 11. Support; 12. Piston; 13. Core cylinder; 14. Control air circuit; 15. Bracket; 16. Handrail ring; 17. Connecting rod;

[0038] 21. Piston rod; 22. First inflation channel; 23. Clearance square hole;

[0039] 31. End cap; 32. Intake passage; 33. Intake valve;

[0040] 41. Inflation valve; 42. Assembly hole; 43. Vent hole; 44. Pressure block; 45. Sealing gasket; 46. Stop bar;

[0041] 51. First partition sleeve; 52. Annular groove; 53. First sealing ring; 54. First through groove; 55. Second through groove;

[0042] 61. Second partition sleeve; 62. Sealing groove; 63. Sealing ball; 64. Second inflation channel;

[0043] 71. Plunger; 72. Second sealing ring; 73. Third sealing ring; 74. Positioning groove; 75. Positioning pin; 76. Exhaust passage; 77. Screw hole; 78. Exhaust hole; 79. Exhaust knob; 710. Fourth sealing ring;

[0044] 81. Guide seat; 82. Mounting square hole; 83. Guide wheel. Detailed Implementation

[0045] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the relevant invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, only the parts relevant to the invention are shown in the accompanying drawings.

[0046] It should be noted that, where there is no conflict, the embodiments and features in the embodiments of this utility model can be combined with each other. The present utility model will now be described in detail with reference to the accompanying drawings and embodiments.

[0047] Please refer to Figures 1-10 An embodiment of this utility model provides a self-inflatable pneumatic gimbal, comprising:

[0048] The inner cylinder 1 has a support 11 fixedly installed at its top and a piston 12 fixedly installed at its bottom. A core cylinder 13 is installed inside the inner cylinder 13. The top of the core cylinder 13 is sealed to the support, and a cavity C is formed between the inner cylinder 1 and the core cylinder 13.

[0049] The outer cylinder 2 is slidably sleeved with the bottom end of the inner cylinder 1, and a piston rod 21 is provided inside it. A first inflation channel 22 is opened axially inside the piston rod 21. The bottom end of the piston rod 21 is fixedly connected to the bottom end of the outer cylinder 2 through the air intake assembly 3, and the first inflation channel 22 is connected to the outside. The top end of the piston rod 21 is sealed through the piston 12 and extends into the core cylinder 13. A cavity A is formed above the piston rod 21 and a cavity B is formed below the top end of the piston rod 21 inside the core cylinder 13.

[0050] A one-way ventilation mechanism is provided at the top of the piston rod 21 and the bottom of the core cylinder 13. When the inner cylinder 1 rises relative to the outer cylinder 2, air enters the cavity A through the first inflation channel 22. The cavity A and the cavity B are sealed and separated. When the cylinder 1 falls relative to the outer cylinder 2, the air in the cavity A cannot enter the first inflation channel 22. The cavity A and the cavity B are connected, and the air in the cavity B enters the cavity C.

[0051] Adjustment control component 7, located on support 11, is used to control the connection and closure of cavity A and cavity C.

[0052] In this embodiment, when inflating the pneumatic gimbal, the inner cylinder 1 is first pulled up. During the pulling process, under the action of the one-way ventilation mechanism, the cavity A and the cavity B are sealed and separated. As the piston rod 21 exits from the core cylinder 13, the space of the cavity A becomes larger and the air pressure decreases. Air enters the cavity A through the air intake assembly 3 and the first inflation channel 22 to inflate the cavity A.

[0053] Then, the inner cylinder 1 is pressed down. During the pressing process, under the action of the one-way ventilation mechanism, cavity A and cavity B are connected. Since the piston rod 21 is inserted into the core cylinder 13, the space between cavity A and cavity B becomes smaller, and the air pressure increases. At this time, the air in cavity A and cavity B cannot merge and enter the first inflation channel 22, but can only enter cavity C to inflate cavity C. By repeatedly pulling up and pressing down the inner cylinder 1, cavity C is continuously inflated. When the air pressure in cavity C rises to the required level, cavity A and cavity C are connected by adjusting the control component 7. At this time, the air pressure in the inner cylinder 1 can offset the weight of the camera.

[0054] In this application, the core cylinder 13 surrounds the piston rod 21, allowing the insertion and removal of the piston rod 21 to change the air pressure inside the core cylinder 13, thereby completing inflation. After inflation is complete, cavity A and cavity C are connected. At this point, the rise and fall of the piston rod 21 has minimal impact on the spatial changes within the inner cylinder 1, tending to reach a stable state. The air pressure within the inner cylinder 1 is used to counteract the camera's own weight. This application's pneumatic gimbal uses mechanical coordination to achieve self-inflation, resulting in good inflation performance and eliminating the need for separate inflation equipment, thus improving the convenience of using the pneumatic gimbal.

[0055] In a preferred embodiment, such as Figure 3 and Figure 4 As shown, the one-way ventilation mechanism includes:

[0056] The first one-way ventilation component 4 is fixedly installed at the top of the piston rod 21 and is connected to the first inflation channel 22. Air enters the cavity A through the first inflation channel 22.

[0057] The second one-way ventilation component 5 is fixedly installed on the periphery of the first one-way ventilation component 4. When the inner cylinder 1 rises relative to the outer cylinder 2, the cavity A and the cavity B are sealed and separated. When the inner cylinder 1 falls relative to the outer cylinder 2, the cavity A and the cavity B are connected.

[0058] The third one-way ventilation component 6 is fixedly installed at the bottom end of the core cylinder 13, allowing air in cavity B to enter cavity C.

[0059] In this embodiment, after the second one-way ventilation component 5 seals and separates the cavity A and the cavity B, the air pressure in the cavity A is reduced when the piston rod 21 exits from the core cylinder 13, and the external air enters the cavity A through the first one-way ventilation component 4.

[0060] When the outer cylinder 2 descends, cavity A and cavity B become connected. The piston rod 21 is inserted into the core cylinder 13, reducing the volume of cavities A and B. Compressed air is then pumped into cavity C through the third one-way ventilation assembly 6. Each inflation accumulates in cavity C until the air pressure reaches the required level.

[0061] In a preferred embodiment, such as Figure 5 and Figure 6 As shown, the first one-way ventilation assembly 4 includes an inflation valve 41 fixedly mounted on the top of the piston rod 21. The top of the inflation valve 41 is provided with an assembly hole 42. The bottom of the assembly hole 42 is provided with a ventilation hole 43 that communicates with the top of the first inflation channel 22. A pressure block 44 is separately provided inside the assembly hole 42. A sealing gasket 45 is fixedly provided at the bottom of the pressure block 44. A stop bar 46 is fixedly provided above the pressure block 44 inside the assembly hole 42.

[0062] In this embodiment, when the air pressure inside cavity A decreases, outside air pushes up the pressure block 44 through the first inflation channel 22 and enters cavity A; when the air pressure inside cavity A increases, the pressure block 44 presses and seals the vent 43 through the sealing gasket 45, and the air inside cavity A cannot be discharged through the first inflation channel 22, thus achieving one-way ventilation.

[0063] During handling or use, the stop bar 46 prevents the pressure block 44 from falling out of the assembly hole 42 and causing malfunction, thus ensuring the reliability of the structure.

[0064] In a preferred embodiment, such as Figure 5 and Figure 6 As shown, the second one-way ventilation component 5 includes a first partition sleeve 51 fixedly sleeved around the first one-way ventilation component 4. A ring groove 52 is formed around the middle of the first partition sleeve 51. A first sealing ring 53 is sleeved inside the ring groove 52. The height of the ring groove 52 in the vertical direction is not less than twice the wire diameter of the first sealing ring 53. The outer diameter of the upper part of the ring groove 52 is greater than the inner diameter of the first sealing ring 53. The outer diameter of the lower part of the ring groove 52 gradually decreases from top to bottom, and the minimum outer diameter is less than the inner diameter of the first sealing ring 52. The outer diameter of the first sealing ring 53 is greater than the inner diameter of the core cylinder 13.

[0065] The outer periphery of the first partition sleeve 51 is located above the annular groove 52 and has a number of first through grooves 54 evenly distributed; the outer periphery of the first partition sleeve 51 is located below the annular groove 52 and has a number of second through grooves 55 evenly distributed, the second through grooves 55 connecting to the annular groove 52.

[0066] In this embodiment, when the core cylinder 13 rises together with the inner cylinder 1, the first sealing ring 53 moves up to the top of the annular groove 52 to seal the first separating sleeve 51 and the core cylinder 13, thus separating and sealing cavity A and cavity B. When the core cylinder 13 descends together with the inner cylinder 1, the first sealing ring 53 moves down to the bottom of the annular groove 52. At this time, the top of the second through groove 55 is higher than the first sealing ring 53. Cavity A is connected to cavity B through the first through groove 54, the annular groove 52 and the second through groove 55, thus achieving one-way communication.

[0067] In a preferred embodiment, such as Figure 7 and Figure 8 As shown, the third one-way ventilation assembly 6 includes a second partition sleeve 61 fixedly disposed on the top of the piston 12. The bottom end of the core cylinder 13 is sealed and fixedly connected to the second partition sleeve 61. The top of the second partition sleeve 61 is provided with a sealing groove that communicates with the cavity C. A sealing ball 63 is disposed in the sealing groove 62. The bottom end of the sealing groove 62 has a conical inner diameter and communicates with the cavity B through the second inflation channel 64.

[0068] In this embodiment, the maximum inner diameter of the cone at the bottom of the sealing groove 62 is greater than the outer diameter of the sealing ball 63, and the minimum inner diameter is less than the outer diameter of the sealing ball 63, ensuring that the sealing ball 63 seals the connection between the sealing groove 62 and the second inflation channel 64 by its own weight.

[0069] When the air pressure inside cavity B increases to a level greater than that inside cavity C, the air in cavity B pushes up the sealing ball 63 and enters cavity C, inflating cavity C. When the air pressure inside cavity C is higher, it compresses the sealing ball 63, preventing it from entering cavity B in the opposite direction, thus achieving one-way communication.

[0070] A limiting component is fixedly installed above the sealing ball 63 in the sealing groove 62 to prevent the sealing ball 63 from falling out of the sealing groove 62 and thus preventing the failure to achieve unidirectional communication, thereby ensuring the reliability of the structure.

[0071] In a preferred embodiment, such as Figure 1 and Figure 4 As shown, the air intake assembly 3 includes an end cap 31 fixedly disposed at the bottom end of the outer cylinder 2, and the bottom end of the piston rod 21 is sealed and fixedly connected to the end cap 31; an air intake channel 32 communicating with the first air filling channel 22 is opened on one side of the end cap 31, and an air intake valve 33 communicating with the air intake channel 32 is fixedly disposed on one side of the end cap 31.

[0072] In this embodiment, when the pneumatic gimbal is inflated, external air enters the air intake channel 32 through the air intake valve 33 and then re-enters the first inflation channel 22. The first inflation channel 22 is connected to the outside, ensuring the self-inflation of the pneumatic gimbal.

[0073] In a preferred embodiment, such as Figure 9 and Figure 10As shown, the adjustment and control assembly 7 includes a plunger 71. A control air passage 14 communicating with cavities A and C is provided on one side of the support 11. The plunger 71 is slidably inserted into the control air passage 14. A second sealing ring 72 is fitted on the plunger 71 to seal and separate cavities A and C, and a third sealing ring 73 to seal and separate cavities C from the outside. A positioning groove 74 is provided on the outer wall of the plunger 71. A positioning pin 75 that slides with the positioning groove 74 is fixedly provided on the inner wall of the control air passage 14. An exhaust channel 76 is provided axially inside the plunger 71. A screw hole 77 is provided at the outer end of the exhaust channel 76. An exhaust hole 78 penetrating the plunger 71 is provided radially on both sides of the screw hole 77. An exhaust knob 79 is threadedly connected to the screw hole 77. A fourth sealing ring 710 is provided between the end of the exhaust knob 79 and the exhaust channel 76.

[0074] In this embodiment, during self-inflation, the plunger 71 is inserted into the control air passage 14, and the second sealing ring 72 and the third sealing ring 73 seal the cavity A and cavity C respectively. After inflation, the plunger 71 is pulled outward by one end, so that cavity A and cavity C are connected through the control air passage 14, thereby making the air pressure in the inner cylinder 1 consistent.

[0075] The movement of the plunger 71 is limited by the sliding engagement of the positioning groove 74 and the positioning pin 75, so that the plunger 71 can switch between the two positions of the sealed cavity A and cavity C and the connected cavity A and cavity C, thereby ensuring the accuracy of the switching operation.

[0076] When storing and transporting the pneumatic gimbal, turn the exhaust knob 79 outward to connect the exhaust port 78 with the exhaust channel 76 through the screw hole 77, thereby venting the air from the inner cylinder 1. At this time, the inner cylinder 1 is inserted into the outer cylinder 2, and then the exhaust knob 79 is tightened to reduce the volume of the pneumatic gimbal, making it convenient for transportation and storage.

[0077] In a preferred embodiment, such as Figure 1 and Figure 6 As shown, a guide assembly 8 is provided at the top of the outer cylinder 2; the guide assembly 8 includes a plurality of guide seats 81 evenly distributed around the periphery of the outer cylinder 2 in the circumferential direction, and a mounting square hole 82 is provided on the guide seat 81 in the vertical direction. A clearance square hole 23 corresponding to the mounting square hole 82 is provided on the outer cylinder 2. A guide wheel 83 is provided in each mounting square hole 82, and the guide wheel 83 passes through the clearance square hole 23 and abuts against the outer wall of the inner cylinder 1.

[0078] In this embodiment, when the inner cylinder 1 and the outer cylinder 2 move relative to each other, the guide wheel 83 rolls on the outer wall of the inner cylinder 1, which improves the smoothness of the air pressure gimbal during inflation and height adjustment.

[0079] In a preferred embodiment, such as Figure 1 and Figure 4As shown, a bracket 15 is fixedly installed on the top of the support 11 for mounting the camera and ensuring the stability of the camera installation.

[0080] In a preferred embodiment, such as Figure 1 and Figure 4 As shown, a handle ring 16 is provided around the support 11, and the handle ring 16 is fixedly connected to the support 11 through several connecting rods 17. This allows the user to inflate the pneumatic gimbal and adjust its height using the handle ring 16.

[0081] In the description of this specification, the terms "connection," "installation," and "fixing," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0082] In the description of this specification, the terms "one embodiment," "some embodiments," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0083] The above are merely preferred embodiments of this application and are not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A self-inflatable pneumatic gimbal, characterized in that, include: The inner cylinder (1) has a support (11) fixedly installed at its top and a piston (12) fixedly installed at its bottom. A core cylinder (13) is installed inside the inner cylinder (13). The top of the core cylinder (13) is sealed to the support (11). A cavity C is formed between the inner cylinder (1) and the core cylinder (13). The outer cylinder (2) is slidably sleeved with the bottom end of the inner cylinder (1), and a piston rod (21) is provided inside it. The piston rod (21) has a first inflation channel (22) opened along the axial direction. The bottom end of the piston rod (21) is fixedly connected to the bottom end of the outer cylinder (2) through the air intake assembly (3), and the first inflation channel (22) is connected to the outside. The top end of the piston rod (21) seals through the piston (12) and extends into the core cylinder (13). A cavity A is formed above the piston rod (21) in the core cylinder (13), and a cavity B is formed below the top end of the piston rod (21). A one-way ventilation mechanism is provided at the top of the piston rod (21) and the bottom of the core cylinder (13). When the inner cylinder (1) rises relative to the outer cylinder (2), air enters the cavity A through the first inflation channel (22). The cavity A is sealed and separated from the cavity B. When the inner cylinder (1) falls relative to the outer cylinder (2), the air in the cavity A cannot enter the first inflation channel (22). The cavity A is connected to the cavity B, and the air in the cavity B enters the cavity C. An adjustment control component (7) is disposed on the support (11) and is used to control the connection and closure of the cavity A and the cavity C.

2. The self-inflatable pneumatic gimbal according to claim 1, characterized in that, The one-way ventilation mechanism includes: The first one-way ventilation component (4) is fixedly installed at the top of the piston rod (21) and communicates with the first inflation channel (22). Air enters the cavity A through the first inflation channel (22). The second one-way ventilation component (5) is sealed and fixedly disposed on the periphery of the first one-way ventilation component (4). When the inner cylinder (1) rises relative to the outer cylinder (2), it seals and separates the cavity A and the cavity B. When the inner cylinder (1) falls relative to the outer cylinder (2), the cavity A and the cavity B are connected. The third one-way ventilation component (6) is fixedly installed at the bottom end of the core tube (13), and the air in the cavity B enters the cavity C.

3. The self-inflatable pneumatic gimbal according to claim 2, characterized in that, The first one-way ventilation assembly (4) includes an inflation valve (41) fixedly disposed at the top end of the piston rod (21). The top end of the inflation valve (41) is provided with an assembly hole (42). The bottom of the assembly hole (42) is provided with an air vent (43) that communicates with the top end of the first inflation channel (22). A pressure block (44) is separately disposed in the assembly hole (42). A sealing gasket (45) is fixedly disposed at the bottom end of the pressure block (44). A stop bar (46) is fixedly disposed above the pressure block (44) in the assembly hole (42).

4. The self-inflatable pneumatic gimbal according to claim 2, characterized in that, The second one-way ventilation assembly (5) includes a first partition sleeve (51) fixedly sleeved around the first one-way ventilation assembly (4). A ring groove (52) is formed around the middle of the first partition sleeve (51), and a first sealing ring (53) is sleeved inside the ring groove (52). The outer periphery of the first partition sleeve (51) is provided with a plurality of first through grooves (54) evenly distributed above the annular groove (52); the outer periphery of the first partition sleeve (51) is provided with a plurality of second through grooves (55) evenly distributed below the annular groove (52), and the second through grooves (55) are connected to the annular groove (52).

5. The self-inflatable pneumatic gimbal according to claim 2, characterized in that, The third one-way ventilation assembly (6) includes a second partition sleeve (61) fixedly disposed on the top of the piston (12). The bottom end of the core cylinder (13) is sealed and fixedly connected to the second partition sleeve (61). The top of the second partition sleeve (61) is provided with a sealing groove (62) communicating with the cavity C. A sealing ball (63) is disposed in the sealing groove (62). The bottom end of the sealing groove (62) has a conical inner diameter and is connected to the cavity B through a second inflation channel (64).

6. The self-inflatable pneumatic gimbal according to claim 1, characterized in that, The air intake assembly (3) includes an end cap (31) fixedly disposed at the bottom end of the outer cylinder (2), and the bottom end of the piston rod (21) is sealed to the end cap (31); an air intake channel (32) communicating with the first air filling channel (22) is opened on one side of the end cap (31), and an air intake valve (33) communicating with the air intake channel (32) is fixedly disposed on one side of the end cap (31).

7. The self-inflatable pneumatic gimbal according to claim 1, characterized in that, The adjustment and control assembly (7) includes a plunger (71). A control air passage (14) communicating with cavities A and C is provided on one side of the support (11). The plunger (71) is slidably inserted into the control air passage (14). A second sealing ring (72) is fitted on the plunger (71) to seal and separate cavities A and C, and a third sealing ring (73) to seal and separate cavities C from the outside. A positioning groove (74) is formed on the outer wall of the plunger (71). The control air passage (14) A positioning pin (75) is fixedly provided on the inner wall of the plunger (71) and slides with the positioning groove (74). An exhaust channel (76) is provided in the plunger (71) along the axial direction. A screw hole (77) is provided at the outer end of the exhaust channel (76). An exhaust hole (78) is provided on both sides of the screw hole (77) along the radial direction, which passes through the plunger (71). An exhaust knob (79) is threadedly connected to the screw hole (77). A fourth sealing ring (710) is provided between the end of the exhaust knob (79) and the exhaust channel (76).

8. The self-inflatable pneumatic gimbal according to claim 1, characterized in that, The top of the outer cylinder (2) is provided with a guide assembly (8); the guide assembly (8) includes a plurality of guide seats (81) evenly distributed around the outer cylinder (2), the guide seats (81) are provided with mounting square holes (82) in the vertical direction, the outer cylinder (2) is provided with clearance square holes (23) corresponding to the mounting square holes (82), each mounting square hole (82) is provided with a guide wheel (83), the guide wheel (83) passes through the clearance square hole (23) and abuts against the outer wall of the inner cylinder (1).

9. The self-inflatable pneumatic gimbal according to claim 1, characterized in that, A bracket (15) is fixedly installed on the top of the support (11).

10. The self-inflatable pneumatic gimbal according to claim 1, characterized in that, The support (11) is provided with a handrail ring (16) on its periphery, and the handrail ring (16) is fixedly connected to the support (11) by a number of connecting rods (17).

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