A swivel joint

Abstract

The application discloses a swivel joint for a loading arm, which comprises a joint body, a channel is arranged in the joint body, and the channel is used for liquid flow; the joint body comprises a fixed assembly and a rotating assembly; the fixed assembly is used for connecting an external receiving pipeline; the rotating assembly is used for connecting an external input pipeline; the rotating assembly and the fixed assembly can rotate relative to each other, so that the external input pipeline can rotate to receive liquid from different directions; the joint body further comprises a driving assembly, which is used for driving the rotating assembly to rotate; and a shell assembly is arranged on the joint body, which is used for avoiding pollution of the joint body by an external environment and can block liquid ejection when the joint body leaks, so that accidents can be avoided.

Description

Technical Field

[0001] This disclosure relates to the field of liquid loading and unloading arm fittings, specifically to an arm fitting. Background Technology

[0002] In the chemical industry, the loading and unloading of most liquid chemicals relies on liquid loading and unloading stations (a set of facilities specifically designed for loading and unloading liquid raw materials and products) connected to transport vehicles and storage tanks. During the loading and unloading process, loading arms connect the vehicles and the liquid loading and unloading stations, and the rotary joint is a key component of the loading arm. Also known as a universal joint, the rotary joint is precision-machined using CNC machine tools, ensuring flexible rotation, ease of use, and reliability; it is generally suitable for the transmission of high-temperature, low-temperature, and highly corrosive media.

[0003] Because most liquid products and raw materials in the chemical industry possess highly hazardous physical and chemical properties, and loading and unloading often require pressurization, rotary joints, as key components of loading arms, must possess basic characteristics such as connectivity, pressure resistance, sealing, and flexible rotation. Due to differences in the properties of chemicals and loading / unloading conditions, rotary joints may experience insufficient sealing or component corrosion under different circumstances, leading to chemical leaks. This poses a significant threat to the lives of workers and represents a major hidden danger to the operational safety of the enterprise. Summary of the Invention

[0004] In view of the above-mentioned defects or deficiencies in the prior art, it is desirable to provide an loading arm fitting.

[0005] In a first aspect, this application provides an loading arm connector, comprising:

[0006] The connector body has a channel inside for liquid flow. The connector body includes a fixing component for connecting to an external receiving pipe. The connector body also includes a rotating component for connecting to an external input pipe, and the rotating component and the fixing component are coaxially and rotatably connected.

[0007] The connector body also includes a drive assembly, which drives the rotary assembly to rotate, thereby rotating the external input pipe to adapt to different input directions of the liquid;

[0008] A housing assembly that covers the connector body to prevent the connector body from being contaminated.

[0009] According to the technical solution provided by the embodiment of the present application, the fixing component includes a first mounting member, which is of an annular structure. The first mounting member has a first side wall and a second side wall that are away from each other. A first outer sleeve is fixedly connected to the first side wall, and a first fixing flange is fixedly connected to the second side wall. The first fixing flange is used to connect the external receiving pipe.

[0010] The rotating component includes a second mounting member, which is of an annular structure. The second mounting member has a third side wall and a fourth side wall that are away from each other. The third side wall is close to the first mounting member, and a first rotating flange is fixedly connected to the fourth side wall. The first rotating flange is used to connect the external input pipe.

[0011] According to the technical solution provided by the embodiment of the present application, the rotating component further includes a first inner sleeve. The first inner sleeve is coaxially and rotatably arranged inside the first outer sleeve. A first rotating groove is provided on the circumferential side wall of the first inner sleeve, and a second rotating groove is provided on the circumferential inner wall of the first outer sleeve. The first rotating groove and the second rotating groove are docked, and first balls are arranged inside the first rotating groove and the second rotating groove. A first sealing groove is also provided on the circumferential side wall of the first inner sleeve, and a first sealing member is arranged inside the first sealing groove.

[0012] According to the technical solution provided by the embodiment of the present application, a first bushing is fixedly connected coaxially inside the first inner sleeve. The outer wall of the circumferential end of the first bushing close to the second mounting member is fixedly connected to the circumferential inner wall of the second mounting member.

[0013] According to the technical solution provided by the embodiment of the present application, the driving component includes a mounting seat, which is fixedly connected to the first side wall. The driving component further includes a first driving part, which has a first driving end. A gear is coaxially connected to the first driving end.

[0014] The driving component further includes a rack, which is of an arc structure and is arranged on the third side wall. The gear and the rack are meshed and connected.

[0015] According to the technical solution provided by the embodiment of the present application, a limiting component is further included. The limiting component includes a first limiting seat, which is fixedly arranged on the mounting seat. The first limiting seat is of a "convex" shape structure. The limiting component further includes a second limiting seat, which is of an arc structure and is arranged on the third side wall and forms a butt joint with the rack. Both ends of the second limiting seat have limiting parts for contacting the second limiting seat to prevent the rotating component from rotating excessively.

[0016] According to the technical solution provided in the embodiments of this application, the housing assembly includes a second housing, the second housing having a fifth sidewall and a sixth sidewall that are far apart from each other, and the fifth sidewall having a first opening;

[0017] The rotary assembly includes a third mounting member, which is an annular structure. The third mounting member is rotatably disposed in the first opening, and a second sealing groove is provided on the circumferential sidewall of the third mounting member. A second sealing element is disposed in the second sealing groove. The third mounting member has a seventh sidewall and an eighth sidewall that are far apart from each other. The seventh sidewall is used to connect to the second rotary flange.

[0018] According to the technical solution provided in the embodiments of this application, the rotary assembly further includes a second outer sleeve, which is coaxially disposed inside the third mounting component, and the end of the second outer sleeve near the second rotary flange is fixedly connected to the second rotary flange.

[0019] According to the technical solution provided in the embodiments of this application, the drive assembly includes a second drive part, the second drive part having a second drive end, the second drive end extending into the interior of the second housing and coaxially fixedly connected to a worm gear, the drive assembly also includes a worm wheel, which is an annular structure, the worm wheel is fixedly disposed on the eighth side wall, and the worm wheel and the worm gear are meshed together.

[0020] According to the technical solution provided in the embodiments of this application, the sixth sidewall is provided with a second opening, and the fixing component includes a second fixing flange, which is an annular structure, and the second fixing flange is disposed on the sixth sidewall and coaxial with the second opening;

[0021] The fixing component further includes a second inner sleeve, which is coaxially and rotatably disposed inside the second outer sleeve. The second inner sleeve has a third rotating groove on its circumferential sidewall and a fourth rotating groove on its circumferential inner wall. The fourth rotating groove and the third rotating groove are connected, and a second ball bearing is disposed in the fourth rotating groove and the third rotating groove. The second inner sleeve also has a third sealing groove on its circumferential sidewall, and a third sealing element is disposed in the third sealing groove.

[0022] A second bushing is coaxially fixed inside the second inner sleeve, and one end of the second bushing near the second fixed flange extends through the second opening into the interior of the second fixed flange and is fixedly connected to the second fixed flange.

[0023] In summary, this technical solution specifically discloses an loading arm connector, including a connector body with a channel for liquid flow. The connector body includes a fixed component and a rotating component. The fixed component is used to connect to an external receiving pipe, and the rotating component is used to connect to an external input pipe. The rotating component and the fixed component can rotate relative to each other, thereby enabling the external input pipe to rotate to receive liquid from different directions. The connector body also includes a drive component for driving the rotating component to rotate, thereby driving the external input pipe to rotate and achieving precise positioning of the external input pipe with the external structure. An outer shell component is installed on the connector body to prevent the connector body from being contaminated by the external environment and to block liquid spray in the event of leakage, thus preventing accidents. Attached Figure Description

[0024] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0025] Figure 1 This is a schematic diagram of an arm-loading connector according to Embodiment 1.

[0026] Figure 2 This is a schematic diagram of the internal structure of an arm-loading connector according to Embodiment 1.

[0027] Figure 3 This is an exploded view of the rotary assembly in Example 1.

[0028] Figure 4 This is an exploded view of the fixed component in Embodiment 1.

[0029] Figure 5 This is a schematic diagram of an arm-mounted loading arm connector according to Embodiment 2.

[0030] Figure 6 This is a schematic diagram of the second outer shell.

[0031] Figure 7 This is a schematic diagram of the internal structure of an arm-loading connector according to Embodiment 2.

[0032] Figure 8 This is an exploded view of the rotary assembly in Embodiment 2.

[0033] Figure 9 This is a schematic diagram of the second seal.

[0034] Figure 10 This is an exploded view of the fixed component in Embodiment 2.

[0035] The following are the labeling elements in the diagram: 1. First mounting component; 2. First outer sleeve; 3. First fixed flange; 4. Second mounting component; 5. First slewing flange; 6. First inner sleeve; 7. First slewing groove; 8. Second slewing groove; 9. First bushing; 10. Mounting base; 11. Gear; 12. Rack; 13. First limit seat; 14. Second limit seat; 15. Second outer shell; 16. First opening; 17. Third mounting component; 18. Second seal; 19. 20. Second rotating flange; 21. Worm gear; 22. Worm wheel; 23. Second opening; 24. Second fixed flange; 25. Second inner sleeve; 26. Third rotating groove; 27. Fourth rotating groove; 28. Second bushing; 29. ​​First drive motor; 30. First reducer; 31. Contact part; 32. Limiting part; 33. First housing; 34. Second drive motor; 35. Second reducer; 36. Bearing; 37. First seal. Detailed Implementation

[0036] The present application 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 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.

[0037] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0038] Example 1

[0039] An loading arm fitting is used to connect an external input pipe and an external receiving pipe for conducting liquid. The external input pipe is a bend, so the loading arm fitting can be rotated to adapt to different input directions of the liquid.

[0040] An loading arm connector includes a connector body, the connector body having a channel for allowing liquid to flow.

[0041] The connector body includes a fixing component for connecting to an external receiving pipe;

[0042] The connector body also includes a rotating assembly for connecting an external input pipe, and the rotating assembly and the fixed assembly are coaxially rotatably connected.

[0043] The connector body also includes a drive assembly, which drives the rotary assembly to rotate, thereby rotating the external input pipe to adapt to different input directions of the liquid;

[0044] The housing assembly covers the connector body to prevent contamination, ensure cleanliness, and extend service life.

[0045] like Figures 1 to 4 As shown, the fixing component includes a first mounting member 1, which is an annular structure. The first mounting member 1 has a first sidewall and a second sidewall that are far apart from each other. The first sidewall is fixedly connected to a first outer sleeve 2, which can be connected by bolts. The first outer sleeve 2 and the first mounting member 1 are coaxial.

[0046] The second side wall is fixedly connected to a first fixed flange 3, which can be connected by bolts. The first fixed flange 3 and the first mounting part 1 are coaxial. The first fixed flange 3 has a ring structure and is used to connect to an external receiving pipe.

[0047] Thus, liquid can be transported from inside the fixed assembly to the outside receiving pipe.

[0048] The rotary assembly includes a second mounting member 4, which is an annular structure and is located on one side of the first mounting member 1 and coaxial with the first mounting member 1. The second mounting member 4 has a third side wall and a fourth side wall that are far apart from each other. The third side wall is close to the first mounting member 1, and the fourth side wall is fixedly connected to a first rotary flange 5. The first rotary flange 5 is used to connect an external input pipe.

[0049] The rotating component and the fixed component are coaxial, and the rotating component can rotate relative to the fixed component. Therefore, by rotating, the external input pipe can receive liquid from different angles, and then the liquid is transported to the external receiving pipe through the rotating component and the fixed component.

[0050] The rotary assembly also includes a first inner sleeve 6, which is coaxially and rotatably disposed inside the first outer sleeve 2. The first inner sleeve 6 has a first rotary groove 7 on its circumferential side wall, and the first outer sleeve 2 has a second rotary groove 8 on its circumferential inner wall. The first rotary groove 7 and the second rotary groove 8 are connected, and a first ball bearing is disposed inside the first rotary groove 7 and the second rotary groove 8.

[0051] Optionally, there are two first rotary grooves 7, and correspondingly, there are also two second rotary grooves 8, which can make the relative rotational movement of the first inner sleeve 6 and the first outer sleeve 2 more stable and ensure stable liquid delivery.

[0052] The first inner sleeve 6 is also provided with a first sealing groove on its circumferential side wall, and a first sealing element 37 is provided in the first sealing groove; optionally, the first sealing element 37 is a sealing ring.

[0053] Optionally, two first sealing grooves are provided on the circumferential sidewalls at both ends of the first inner sleeve 6. Therefore, when the first inner sleeve 6 rotates inside the first outer sleeve 2, the sealing between the first inner sleeve 6 and the first outer sleeve 2 is effectively guaranteed. Through the stable relative rotation between the first inner sleeve 6 and the first outer sleeve 2 and the effective sealing, the liquid will not leak, thereby avoiding accidents.

[0054] A first inner sleeve 6 is fixedly connected coaxially inside with a first bushing 9. One end of the first bushing 9 close to the second mounting member 4 is fixedly connected to the inner circumferential wall of the second mounting member 4 in the circumferential direction.

[0055] Optionally, the first inner sleeve 6 and the first bushing 9 are connected by heat welding to ensure tightness. At the same time, one end of the first bushing 9 close to the second mounting member 4 extends into the second mounting member 4 and is fixedly connected to the inner circumferential wall of the second mounting member 4. A channel is formed inside the first bushing 9.

[0056] Thus, the liquid flows into the loading arm joint through an external input pipeline and enters the inside of the first bushing 9, and then is conveyed to an external receiving pipeline through the first bushing 9.

[0057] The driving assembly includes a mounting seat 10. The mounting seat 10 is fixedly connected to the first side wall. The mounting seat 10 includes a connected connecting portion and a mounting portion. The connecting portion is an arc-shaped structure and is connected to the first side wall. Optionally, it is connected by bolts. The mounting portion is located on one side of the connecting portion and is located outside the first mounting member 1.

[0058] The driving assembly further includes a first driving portion. The first driving portion includes a first driving machine 29 and a first reduction gear 30. The first driving machine 29 is connected to the first reduction gear 30. The first reduction gear 30 is arranged on the mounting portion. The first reduction gear 30 has a first driving end. The first driving end movably penetrates through the mounting portion and is coaxially connected with a gear 11. The first driving machine 29 is a servo motor, and the first reduction gear 30 is a planetary reduction gear.

[0059] The driving assembly further includes a rack 12. It is an arc-shaped structure. The rack 12 is arranged on the third side wall. Optionally, it is connected by bolts. The gear 11 and the rack 12 are meshed and connected.

[0060] Thus, by starting the driving assembly, the rotation of the first driving end drives the gear 11 to rotate. Through the meshing of the gear 11 and the rack 12, the rack 12 can rotate around the axis of the slewing assembly, thereby driving the slewing assembly to rotate around its axis. At the same time, the transmission structure in which the gear 11 and the rack 12 are meshed has excellent torque output characteristics, making the rotation of the slewing assembly more stable.

[0061] It further includes a limiting assembly. The limiting assembly includes a first limiting seat 13. The first limiting seat 13 is fixedly arranged on the mounting seat 10. Optionally, it is connected by bolts. The first limiting seat 13 is a "convex" - shaped structure. The first limiting seat 13 has a protruding contact portion 31.

[0062] The limiting assembly also includes a second limiting seat 14, which has an arc-shaped structure and is disposed on the third side wall. Optionally, the second limiting seat 14 can be connected with the rack 12 by bolts. Both ends of the second limiting seat 14 have limiting portions 32, which extend from the ends of the second limiting seat in a direction away from the third side wall. The lowest end of the limiting portion 32 is slightly higher than the lowest end of the contact portion 31. The limiting portion 32 is used to contact the contact portion 31 of the second limiting seat 14 to prevent the rotary assembly from rotating excessively.

[0063] By activating the drive assembly, the rotary assembly is driven to rotate around its axis, thereby enabling the external input pipe connected to the first rotary flange 5 to rotate. When the rotary assembly rotates beyond a certain angle, the limiting part 32 will contact the side wall of the contact part 31, at which point the rotary assembly can no longer rotate. The limiting part can limit the rotation of the rotary assembly, preventing the rotary assembly from rotating excessively, thereby preventing the external input pipe from rotating excessively and ensuring stable liquid input.

[0064] The housing assembly includes a first housing 33, which covers the connector body. The first housing 33 has a first space inside that can accommodate the connector body, thereby preventing the external environment from contaminating the connector body and preventing damage to the components of the connector body. At the same time, if liquid leakage occurs due to a decrease in the sealing performance of the connector body, the first housing 33 can block the liquid to a certain extent, preventing the liquid from spraying directly and protecting personnel.

[0065] Example 2

[0066] In this embodiment, a worm gear 22 and worm 21 meshing structure is used to make the rotary assembly rotate;

[0067] Specifically, such as Figures 5 to 10 As shown, the housing assembly includes a second housing 15, the second housing 15 having a second space inside capable of accommodating the connector body, the second housing 15 having a fifth sidewall and a sixth sidewall that are far apart from each other, and the fifth sidewall having a first opening 16.

[0068] Furthermore, the rotating assembly includes a third mounting member 17, which is an annular structure. The third mounting member 17 is rotatably disposed within the first opening 16, and a second sealing groove is provided on the circumferential side wall of the third mounting member 17. A second sealing member 18 is disposed in the second sealing groove. Optionally, there are two second sealing grooves, which effectively ensures the sealing between the third mounting member 17 and the second housing 15 when rotating. The type of the second sealing member 18 can be a sealing ring.

[0069] Furthermore, the third mounting member 17 has a seventh sidewall and an eighth sidewall that are far apart from each other. The seventh sidewall is used to connect the second slewing flange 19, and the second slewing flange 19 is located on the side of the third mounting member 17 away from the second housing 15. Optionally, the third mounting member 17 and the second slewing flange 19 are connected by bolts and are coaxially arranged.

[0070] The slewing assembly also includes a second outer sleeve 20, which is coaxially disposed inside the third mounting member 17, and the end of the second outer sleeve 20 near the second slewing flange 19 is fixedly connected to the second slewing flange 19, optionally by bolts.

[0071] The drive assembly includes a second drive unit, which includes a second drive motor 34 and a second reducer 35. The second drive motor 34 is connected to the second reducer 35. The second reducer 35 is disposed on the side wall of the second housing 15. The second reducer 35 has a second drive end that extends into the interior of the second housing 15 and is coaxially fixedly connected to a worm gear 21. The second drive motor 34 is a servo motor, and the second reducer 35 is a planetary reducer.

[0072] Furthermore, the drive assembly also includes a worm gear 22, which is a ring structure. The worm gear 22 is fixedly mounted on the eighth side wall. Optionally, the worm gear 22 and the third mounting part 17 are coaxially arranged by bolts, and the worm gear 22 and the worm 21 are meshed together.

[0073] It should be noted that both ends of the worm 21 are rotatably connected to the inner wall of the second housing 15. Specifically, the inner wall of the second housing 15 is provided with a mounting groove, and a bearing 36 is provided in the mounting groove. The outer ring of the bearing 36 is fixedly connected to the inner wall of the second housing 15, and the inner wall of the inner ring of the bearing 36 is fixedly connected to the outer wall of the worm 21. By providing the bearing 36, the stability of the worm 21 during rotation is ensured. Thus, the worm wheel 22 is meshed with the worm 21, ensuring the stability of the worm wheel 22 during rotation, thereby enabling the rotary assembly to rotate stably.

[0074] The sixth side wall of the second housing 15 is provided with a second opening 23. The fixing assembly includes a second fixing flange 24, which is an annular structure, and the second fixing flange 24 is disposed on the sixth side wall and coaxial with the second opening 23.

[0075] Furthermore, the fixing component also includes a second inner sleeve 25, which is coaxially and rotatably disposed inside the second outer sleeve 20. The second inner sleeve 25 has a third rotating groove 26 on its circumferential side wall, and the second outer sleeve 20 has a fourth rotating groove 27 on its circumferential inner wall. The fourth rotating groove 27 and the third rotating groove 26 are connected, and second balls are disposed in the fourth rotating groove 27 and the third rotating groove 26.

[0076] Optionally, the second inner sleeve 25 is provided with a third rotary groove 26 on both circumferential sidewalls, and correspondingly, the second outer sleeve 20 is provided with two fourth rotary grooves 27 on the circumferential inner wall, thereby ensuring stable relative rotation between the second inner sleeve 25 and the second outer sleeve 20.

[0077] Optionally, a third sealing groove is also provided on the circumferential side wall of the second inner sleeve 25, and a third sealing element is provided in the third sealing groove; thereby ensuring the rotational sealing between the second inner sleeve 25 and the second outer sleeve 20; the type of the third sealing element can be a sealing ring.

[0078] A second bushing 28 is coaxially fixed inside the second inner sleeve 25. Optionally, the second bushing 28 and the second inner sleeve 25 are connected by heat welding to ensure the sealing between the second bushing 28 and the second inner sleeve 25.

[0079] The end of the second bushing 28 near the second fixed flange 24 extends through the second opening 23 into the interior of the second fixed flange 24 and is fixedly connected to the circumferential inner wall of the second fixed flange 24.

[0080] Working principle: Loading arms are used to connect external receiving pipes and external input pipes to allow liquid flow. The loading arms include a connector body, which includes a fixed component for connecting the external receiving pipe and a rotating component for connecting the external input pipe. The rotating component and the fixed component rotate relative to each other. The rotating component is driven by a drive component to rotate around an axis. The rotation of the rotating component drives the external input pipe to rotate. Therefore, the bent external input pipe can receive liquids from different directions, adapt to various liquid input directions, and achieve precise positioning of the external input pipe.

[0081] Good rotational sealing between the rotating and stationary components can prevent liquid leakage accidents.

[0082] The housing assembly covers the connector body, which can prevent external contamination from damaging the connector body. At the same time, if the connector body leaks liquid due to reduced sealing, the housing assembly can block the liquid spray, thus protecting personnel and preventing accidents.

[0083] The above description is merely a preferred embodiment of this application and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of the invention involved in this application is not limited to technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the inventive concept. For example, technical solutions formed by substituting the above features with (but not limited to) technical features with similar functions disclosed in this application.

Claims

1. A loading arm connector, characterized in that, include: The connector body has a channel inside for liquid flow. The connector body includes a fixing component for connecting to an external receiving pipe. The connector body also includes a rotating component for connecting to an external input pipe, and the rotating component and the fixing component are coaxially and rotatably connected. The connector body also includes a drive assembly, which drives the rotary assembly to rotate, thereby rotating the external input pipe to adapt to different input directions of the liquid; A housing assembly that covers the connector body to prevent the connector body from being contaminated.

2. The loading arm connector according to claim 1, characterized in that, The fixing component includes a first mounting member (1), which is an annular structure. The first mounting member (1) has a first sidewall and a second sidewall that are far apart from each other. The first sidewall is fixedly connected to a first outer sleeve (2), and the second sidewall is fixedly connected to a first fixing flange (3). The first fixing flange (3) is used to connect the external receiving pipe. The rotary assembly includes a second mounting member (4), which is an annular structure. The second mounting member (4) has a third sidewall and a fourth sidewall that are far apart. The third sidewall is close to the first mounting member (1). The fourth sidewall is fixedly connected to a first rotary flange (5). The first rotary flange (5) is used to connect to an external input pipe.

3. The loading arm connector according to claim 2, characterized in that, The rotary assembly further includes a first inner sleeve (6), which is coaxially and rotatably disposed inside the first outer sleeve (2). The first inner sleeve (6) has a first rotary groove (7) on its circumferential sidewall and a second rotary groove (8) on its circumferential inner wall. The first rotary groove (7) and the second rotary groove (8) are connected, and a first ball bearing is disposed inside the first rotary groove (7) and the second rotary groove (8). A first sealing groove is also disposed on the circumferential sidewall of the first inner sleeve (6), and a first sealing element (37) is disposed inside the first sealing groove.

4. The loading arm connector according to claim 3, characterized in that, The first inner sleeve (6) is coaxially fixedly connected to the first bushing (9), and the outer circumferential wall of the first bushing (9) near the second mounting member (4) is fixedly connected to the inner circumferential wall of the second mounting member (4).

5. The loading arm connector according to claim 4, characterized in that, The drive assembly includes a mounting base (10) which is fixedly connected to the first side wall. The drive assembly also includes a first drive part which has a first drive end and a gear (11) is coaxially connected to the first drive end. The drive assembly also includes a rack (12), which is an arc-shaped structure, and the rack (12) is disposed on the third side wall, and the gear (11) and the rack (12) are meshed together.

6. The loading arm connector according to claim 5, characterized in that, It further includes a limiting component, the limiting component includes a first limiting seat (13), the first limiting seat (13) is fixedly arranged on the mounting seat (10), the first limiting seat (13) is of a "convex" shape structure, the limiting component further includes a second limiting seat (14), the second limiting seat (14) is of an arc-shaped structure, it is arranged on the third side wall and forms a butt joint with the rack (12), both ends of the second limiting seat (14) have limiting parts (32) for contacting the second limiting seat (14) to prevent the rotary component from rotating excessively.

7. The loading arm connector according to claim 1, characterized in that, The housing component includes a second housing (15), the second housing (15) has a fifth side wall and a sixth side wall away from each other, and a first opening (16) is formed in the fifth side wall; The rotary component includes a third mounting member (17), which is of an annular structure, the third mounting member (17) is rotatably arranged in the first opening (16), and a second sealing groove is formed in the circumferential side wall of the third mounting member (17), and a second sealing member (18) is arranged in the second sealing groove; the third mounting member (17) has a seventh side wall and an eighth side wall away from each other, and the seventh side wall is used for connecting the second rotary flange (19).

8. The loading arm connector according to claim 7, characterized in that, The rotary component further includes a second outer sleeve (20), the second outer sleeve (20) is coaxially arranged inside the third mounting member (17), and one end of the second outer sleeve (20) close to the second rotary flange (19) is fixedly connected to the second rotary flange (19).

9. A loading arm connector according to claim 8, characterized in that, The drive component includes a second drive part, the second drive part has a second drive end, the second drive end extends into the second housing (15) and is coaxially and fixedly connected with a worm (21), the drive component further includes a worm gear (22), which is of an annular structure, the worm gear (22) is fixedly arranged on the eighth side wall, and the worm gear (22) is meshed and connected with the worm (21).

10. A loading arm connector according to claim 9, characterized in that, A second opening (23) is formed in the sixth side wall, the fixing component includes a second fixing flange (24), which is of an annular structure, and the second fixing flange (24) is arranged on the sixth side wall and is coaxial with the second opening (23); The fixing component further includes a second inner sleeve (25), the second inner sleeve (25) is coaxially and rotatably arranged inside the second outer sleeve (20), a third rotary groove (26) is formed in the circumferential side wall of the second inner sleeve (25), a fourth rotary groove (27) is formed in the circumferential inner wall of the second outer sleeve (20), the fourth rotary groove (27) and the third rotary groove (26) are butted, and second balls are arranged in the fourth rotary groove (27) and the third rotary groove (26), and a third sealing groove is further formed in the circumferential side wall of the second inner sleeve (25), and a third sealing member is arranged in the third sealing groove; A second bushing (28) is coaxially fixed inside the second inner sleeve (25), and one end of the second bushing (28) near the second fixed flange (24) extends through the second opening (23) into the interior of the second fixed flange (24) and is fixedly connected to the second fixed flange (24).

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