Large-diameter rotation-stopping balance fixed structure rotary joint

Abstract

The invention relates to the technical field of rotary joints, in particular to a large-diameter rotation-stopping balance fixing structure rotary joint which mainly comprises a rotary joint body, an adjusting mechanism, a rotation stopping mechanism, a balance fixing mechanism, a balance fixing mechanism and a balance fixing mechanism. The rotation stopping mechanisms are arranged on the two sides of the rotary joint body, and the fixing mechanisms are arranged on the two sides of the rotary joint body. By arranging the adjusting sleeve and the fixing nut, the height of the adjusting sleeve can be adjusted, then the height of the rotating joint body is adjusted, connection is convenient, the first elastic piece and the second elastic piece apply elastic force to the adjusting plate, the adjusting plate and the supporting rod are in a balanced state, and therefore when the rotating joint body is installed, the rotating joint body can be conveniently installed. Through compensation of the first elastic piece and the second elastic piece, the self-aligning function can be achieved, it is guaranteed that the rotating joint body operates more stably, installation is more convenient, and the service life is prolonged.

Description

Technical Field

[0001] The invention relates to the technical field of rotary joints, in particular to a large-caliber anti-rotation balanced fixed structure rotary joint. Background Art

[0002] As a mechanical seal component, large-diameter rotary joints are installed between fixed supply pipelines and rotating components to achieve dynamic sealing of fluid media during input and output. Large-diameter rotary joints are widely used in various offshore oil production platforms, single-point mooring systems, and marine pipeline transportation systems. For example, in some deep-sea oil production projects, large-diameter rotary joints are used to connect submarine oil wells and floating production storage and unloading devices on the sea surface to ensure that crude oil and natural gas can be safely and efficiently transported back to processing facilities.

[0003] Large-diameter rotary joints are assembled between fixed supply pipelines and rotating parts. The rotary joints need to be installed more precisely to achieve a high degree of sealing and connectivity. However, when installing existing large-diameter flange rotary joints, the installation master is often required to balance the rotary joints. In addition, the rotary joints are often not adjusted to parallel during installation, resulting in eccentric wear or excessive vibration. Long-term eccentric wear and vibration can easily cause the rotary joint to wear faster, thereby reducing the sealing and service life of the rotary joint. Summary of the invention

[0004] The purpose of the present invention is to provide a large-caliber anti-rotation balanced fixed structure rotary joint to solve the problem of the rotary joint not running smoothly after installation proposed in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions: A large-caliber anti-rotation balanced fixed structure rotary joint, comprising: a rotary joint body, a support ear fixedly installed on the outer wall of the rotary joint body, and further comprising: The adjusting mechanism is arranged below the rotating joint body, and the adjusting mechanism comprises two bases located below the rotating joint body, a supporting tube is fixedly installed on the top surface of the base, and a supporting rod is slidably installed on the top surface of the supporting tube. The adjusting mechanism is used to adjust the balance and height of the rotating joint body; The anti-rotation mechanism is arranged on both sides of the rotary joint body. The anti-rotation mechanism includes screw sleeves located on both sides of the rotary joint body. The inner wall of the screw sleeve is threadedly connected with a screw rod. The two ends of the screw rod are respectively threadedly connected with an anti-rotation sleeve and an anti-rotation nut. The anti-rotation mechanism is used to fix and limit the rotary joint body; The fixing mechanism is arranged on both sides of the rotary joint body, and the fixing mechanism includes arc plates for fixing both sides of the rotary joint body, and fixing strips are fixedly installed on the outer walls of the arc plates. The fixing mechanism is used to fix the rotary joint body.

[0006] Preferably, the outer wall of the upper end of the support rod is configured to be threaded, an adjustment plate is fixedly installed at the lower end of the support rod, the outer wall of the adjustment plate is slidably connected to the inner wall of the support tube, and elastic part 2 and elastic part 1 are fixedly installed on the upper and lower sides of the adjustment plate, respectively, and the upper end of elastic part 2 and the lower end of the elastic part are fixedly connected to the inner walls of the upper and lower ends of the support tube, respectively.

[0007] Preferably, an adjusting sleeve is threadedly installed on the upper end of the support rod, a fixing nut is threadedly connected to the middle outer wall of the support rod, and the top surface of the fixing nut is in contact with the bottom surface of the adjusting sleeve.

[0008] Preferably, the outer wall of the screw sleeve is fixedly connected to the upper end of the adjusting sleeve, the outer wall of the screw rod is slidably connected to the inner wall of the supporting ear, and one end of the anti-rotation sleeve and one end of the anti-rotation nut abut against the two side surfaces of the supporting ear.

[0009] Preferably, two limit bars are fixedly installed on the outer wall of the adjusting sleeve, a movable sleeve is slidably installed on the outer wall of the adjusting sleeve, two limit grooves are provided on the inner wall of the movable sleeve, the inner walls of the limit grooves are slidably connected to the outer walls of the limit bars, the outer wall of the movable sleeve is hinged with a support column, the other end of the support column is hinged with a fixed sleeve, and the inner wall of the fixed sleeve is rotatably connected to the outer wall of the anti-rotation sleeve through a bearing seat.

[0010] Preferably, a T-shaped slot is opened on the side of the limit strip, an adjusting bolt is slidably installed on the inner wall of the T-shaped slot, a through hole is penetrated and installed on the outer wall of the movable sleeve, the inner wall of the through hole is slidably connected to the outer wall of one end of the adjusting bolt, and a mounting nut is threadedly connected to one end of the adjusting bolt.

[0011] Preferably, a clamping rod is fixedly mounted on the outer wall of the fixing sleeve, two clamping holes are provided on the side of the supporting ear, and the outer wall at the other end of the clamping rod is slidably connected with the inner wall of the clamping hole.

[0012] Preferably, a cavity is opened inside the card rod, a movable plate is slidably installed on the inner wall of the cavity, a stop block is fixedly installed on the side of the movable plate, one end of the stop block slides through the inner wall of the cavity and extends to the outside of the card rod, and the side of the stop block is movably connected to the side of the support ear.

[0013] Preferably, an elastic member three is fixedly installed on the side of the movable plate, the other end of the elastic member three is fixedly connected to the inner wall of the cavity, and two T-shaped grooves are respectively opened on the upper and lower sides of the clamping rod, and the inner walls of the two T-shaped grooves are respectively slidably connected with T-shaped blocks, and the sides of the T-shaped blocks are fixedly connected to one end of the fixed strip, and the inner wall of the arc plate is in contact with the outer wall of the rotary joint body.

[0014] Preferably, a through groove is opened through the two inner walls of the T-shaped groove, and adjustment rods are fixedly installed on the sides of the two T-shaped blocks close to each other. An inclined groove is opened through the top surface of the movable plate, and the outer wall of the adjustment rod is slidably connected to the inner wall of the inclined groove and the inner wall of the through groove respectively.

[0015] Compared with the prior art, the present invention has the following beneficial effects: The present invention can adjust the height of the adjusting sleeve and the fixing nut by providing the adjusting sleeve and the fixing nut, thereby adjusting the height of the rotating joint body, which is convenient for connection. The elastic member 1 and the elastic member 2 are provided to apply elastic force to the adjusting plate, and make the adjusting plate and the supporting rod in a balanced state, so that when the rotating joint body is installed, the self-aligning function can be realized through the compensation of the elastic member 1 and the elastic member 2, thereby ensuring that the rotating joint body runs more smoothly, is more convenient to install, and has a longer service life. The screw rod is passed through the inner wall of the support ear, the anti-rotation sleeve is rotated to move on the screw rod, and the support ear is fixed with the anti-rotation nut. At the same time, the anti-rotation sleeve drives the support column and the fixed sleeve to move a certain distance, and the adjusting bolt moves in the T-slot. Then, the nut is installed to fix the adjusting bolt, thereby ensuring that the anti-rotation sleeve is not easy to move, thereby improving the fixing effect of the support ear, and when the fixed sleeve moves with the anti-rotation sleeve, it drives the clamping rod to move, and the clamping rod is clamped with the clamping hole to further fix the support ear, thereby fixing the rotary joint body, ensuring that when the rotary joint body is in operation, the outer shell of the rotary joint body is not easy to rotate and shake, thereby improving the sealing and service life of the rotary joint body. When the clamping rod is clamped with the clamping hole, the supporting ear squeezes the abutment block, and the abutment block drives the moving plate to move and squeeze the elastic member three. The cooperation between the inclined groove and the through groove and the T-slot two on the moving plate drives the adjusting rod and the T-block to move. The T-block drives the fixing bar and the arc plate to move. The arc plate clamps and fixes the outer shell of the rotary joint body, further ensuring that the rotary joint body is not prone to rotation and shaking during operation, and the rotary joint body is not prone to damage and leakage, thereby further improving the service quality and life of the rotary joint body. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 It is an exploded view of the three-dimensional structure of the present invention; Figure 3 It is a cross-sectional schematic diagram of the three-dimensional structure of the support tube of the present invention; Figure 4 It is a schematic diagram of the three-dimensional structure of the fixing sleeve of the present invention; Figure 5 It is an exploded view of the three-dimensional structure of the moving sleeve of the present invention; Figure 6 It is a schematic diagram of the three-dimensional structure of the clamping rod of the present invention; Figure 7 It is an exploded view of the three-dimensional structure of the clamping rod of the present invention; Figure 8 It is a cross-sectional schematic diagram of the three-dimensional structure of the clamping rod of the present invention; Fig. 9 It is an exploded view of the three-dimensional structure of the movable plate of the present invention.

[0017] In the figure: 1. Rotary joint body; 101. Support ear; 2. Adjustment mechanism; 201. Base; 202. Support tube; 203. Support rod; 204. Adjustment plate; 205. Elastic member 1; 206. Elastic member 2; 207. Adjustment sleeve; 208. Fixing nut; 3. Anti-rotation mechanism; 301. Screw sleeve; 302. Screw rod; 303. Anti-rotation sleeve; 304. Anti-rotation nut; 305. Limiting strip; 306. Moving sleeve; 307. Limiting groove; 308. T-slot 1; 309. Adjusting bolt; 310. Through hole; 311. Support column; 312. Fixed sleeve; 313. Clamping rod; 314. Clamping hole; 4. Fixing mechanism; 401. Cavity; 402. Moving plate; 403. Stop block; 404. Elastic member three; 405. Oblique groove; 406. Adjusting rod; 407. T-shaped block; 408. T-shaped groove two; 409. Through groove; 410. Fixing strip; 411. Arc plate. DETAILED DESCRIPTION

[0018] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0019] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present application.

[0020] like Figure 1-Figure 9 As shown, the present application provides a large-caliber anti-rotation balanced fixed structure rotary joint, comprising: a rotary joint body 1, a support ear 101 is fixedly installed on the outer wall of the rotary joint body 1, and further comprising: The adjusting mechanism 2 is arranged below the rotating joint body 1. The adjusting mechanism 2 includes two bases 201 located below the rotating joint body 1. A support tube 202 is fixedly installed on the top surface of the base 201. A support rod 203 is slidably installed on the top surface of the support tube 202. The adjusting mechanism 2 is used to adjust the balance and height of the rotating joint body 1. Specifically, Figure 1-Figure 3As shown, the outer wall of the upper end of the support rod 203 is set to be threaded, and an adjustment plate 204 is fixedly installed at the lower end of the support rod 203. The outer wall of the adjustment plate 204 is slidably connected to the inner wall of the support tube 202, and the upper and lower sides of the adjustment plate 204 are respectively fixedly installed with an elastic member 206 and an elastic member 1 205, and the upper end of the elastic member 206 and the lower end of the elastic member 1 205 are respectively fixedly connected to the inner walls of the upper and lower ends of the support tube 202.

[0021] In this embodiment, elastic member 1 205 and elastic member 206 are provided to apply elastic force to the adjustment plate 204 , thereby applying dynamic compensation to the support rod 203 .

[0022] Specifically, Figure 1-Figure 3 As shown, an adjusting sleeve 207 is threadedly installed on the upper end of the support rod 203 , and a fixing nut 208 is threadedly connected to the middle outer wall of the support rod 203 , and the top surface of the fixing nut 208 contacts the bottom surface of the adjusting sleeve 207 .

[0023] In this embodiment, an adjusting sleeve 207 is threadedly mounted on the upper end of the support rod 203 , so that the height of the adjusting sleeve 207 can be controlled, and a fixing nut 208 is provided to further support and fix the adjusting sleeve 207 .

[0024] The anti-rotation mechanism 3 is arranged on both sides of the rotary joint body 1. The anti-rotation mechanism 3 includes screw sleeves 301 located on both sides of the rotary joint body 1. The inner wall of the screw sleeve 301 is threadedly connected with a screw rod 302. The two ends of the screw 302 are respectively threadedly connected with an anti-rotation sleeve 303 and an anti-rotation nut 304. The anti-rotation mechanism 3 is used to fix and limit the rotary joint body 1; Specifically, Figure 1-Figure 7 As shown, the outer wall of the screw sleeve 301 is fixedly connected to the upper end of the adjustment sleeve 207, the outer wall of the screw rod 302 is slidably connected to the inner wall of the support ear 101, and one end of the anti-rotation sleeve 303 and one end of the anti-rotation nut 304 are in contact with the two side surfaces of the support ear 101.

[0025] In this embodiment: the support ear 101 is limited by the provided screw 302, and the provided anti-rotation sleeve 303 and anti-rotation nut 304 are used to clamp and fix the support ear 101, thereby limiting and fixing the support ear 101 and the rotary joint body 1, so that the outer shell of the rotary joint body 1 is not easily rotated and offset.

[0026] Specifically, Figure 1-Figure 7 As shown, two limit bars 305 are fixedly installed on the outer wall of the adjustment sleeve 207, and a movable sleeve 306 is slidably installed on the outer wall of the adjustment sleeve 207. Two limit grooves 307 are provided on the inner wall of the movable sleeve 306. The inner wall of the limit groove 307 is slidably connected to the outer wall of the limit bar 305. The outer wall of the movable sleeve 306 is hinged with a support column 311, and the other end of the support column 311 is hinged with a fixed sleeve 312. The inner wall of the fixed sleeve 312 is rotatably connected to the outer wall of the anti-rotation sleeve 303 through a bearing seat.

[0027] In this embodiment: the movable sleeve 306 is limited by the limit strip 305 and the limit groove 307, so that the movable sleeve 306 is more stable when moving. The movable sleeve 306 supports and fixes the support column 311 and the fixed sleeve 312, thereby fixing the anti-rotation sleeve 303.

[0028] Specifically, Figure 1-Figure 7 As shown, a T-shaped slot 308 is opened on the side of the limit strip 305, an adjusting bolt 309 is slidably installed on the inner wall of the T-shaped slot 308, a through hole 310 is installed through the outer wall of the movable sleeve 306, the inner wall of the through hole 310 is slidably connected to the outer wall of one end of the adjusting bolt 309, and a mounting nut is threadedly connected to one end of the adjusting bolt 309.

[0029] In this embodiment: the adjusting bolt 309 is limited by the T-shaped slot 308, so that the adjusting bolt 309 can move more stably, and the through hole 310 is provided, and the adjusting bolt 309 cooperates with the mounting nut to fix the movable sleeve 306.

[0030] Specifically, Figure 1-Figure 7 As shown, a clamping rod 313 is fixedly installed on the outer wall of the fixing sleeve 312 , two clamping holes 314 are opened on the side of the supporting ear 101 , and the outer wall of the other end of the clamping rod 313 is slidably connected with the inner wall of the clamping hole 314 .

[0031] In this embodiment, the clamping rod 313 and the clamping hole 314 are provided, and the clamping rod 313 is clamped with the clamping hole 314 to further limit and fix the support ear 101, thereby ensuring that the support ear 101 and the rotary joint body 1 are not easy to rotate and deviate.

[0032] The fixing mechanism 4 is arranged on both sides of the rotary joint body 1 . The fixing mechanism 4 includes arc plates 411 for fixing both sides of the rotary joint body 1 . The outer wall of the arc plates 411 is fixedly mounted with fixing strips 410 . The fixing mechanism 4 is used to fix the rotary joint body 1 .

[0033] Specifically, Figure 1-Figure 9 As shown, a cavity 401 is opened inside the clamping rod 313, a movable plate 402 is slidably installed on the inner wall of the cavity 401, a stop block 403 is fixedly installed on the side of the movable plate 402, one end of the stop block 403 slides through the inner wall of the cavity 401 and extends to the outside of the clamping rod 313, and the side of the stop block 403 is movably connected to the side of the support ear 101.

[0034] In this embodiment, the movable plate 402 is limited by the provided cavity 401 , and when the stopper 403 abuts against the support ear 101 , the stopper 403 pushes the movable plate 402 to move.

[0035] Specifically, Figure 1-Figure 9As shown, an elastic member 3 404 is fixedly installed on the side of the movable plate 402, and the other end of the elastic member 3 404 is fixedly connected to the inner wall of the cavity 401, and T-shaped grooves 408 are respectively provided on the upper and lower sides of the clamping rod 313, and T-shaped blocks 407 are slidably connected to the inner walls of the two T-shaped grooves 408 respectively, and the sides of the T-shaped blocks 407 are fixedly connected to one end of the fixing strip 410, and the inner wall of the arc plate 411 is in contact with the outer wall of the rotary joint body 1.

[0036] In this embodiment: elastic force is applied to the movable plate 402 by means of the elastic member 3 404, and the T-slot 2 408 is provided to limit the T-block 407, so that the T-block 407 can only move in a straight line along the T-slot 2 408, and the arc plate 411 is provided to clamp and fix the outer shell of the rotary joint body 1, further ensuring that the outer shell of the rotary joint body 1 is not easy to rotate and deviate.

[0037] Specifically, Figure 1-Figure 9 As shown, a through slot 409 is formed through the inner wall of the second T-slot 408, and adjustment rods 406 are fixedly installed on the sides of two T-blocks 407 close to each other. An inclined slot 405 is formed through the top surface of the movable plate 402, and the outer wall of the adjustment rod 406 is slidably connected to the inner wall of the inclined slot 405 and the inner wall of the through slot 409 respectively.

[0038] In this embodiment, when the moving plate 402 moves, the inclined slot 405 and the through slot 409 cooperate to make the adjusting rod 406 move linearly.

[0039] The specific solution is as follows: the base 201 is connected and fixed to the device, and the height of the adjustment sleeve 207 can be adjusted through the adjustment sleeve 207 and the fixing nut 208, thereby adjusting the height of the rotary joint body 1, which is convenient for connection. The elastic member 1 205 and the elastic member 2 206 are provided to apply elastic force to the adjustment plate 204, and make the adjustment plate 204 and the support rod 203 in a balanced state, so that when the rotary joint body 1 is installed, the self-aligning function can be realized through the compensation of the elastic member 1 205 and the elastic member 2 206, ensuring The rotary joint body 1 runs more smoothly, is more convenient to install, and has a longer service life. The screw 302 is inserted into the inner wall of the support ear 101, and the anti-rotation sleeve 303 is rotated to move on the screw 302, and the support ear 101 is fixed with the anti-rotation nut 304. At the same time, the anti-rotation sleeve 303 drives the support column 311 and the fixing sleeve 312 to move a certain distance, and the adjusting bolt 309 moves in the T-slot 308. Then the nut is installed to fix the adjusting bolt 309, thereby ensuring that the anti-rotation sleeve 303 is not easy to move, thereby improving the support ear. The fixing effect of 101 is improved, and when the fixing sleeve 312 moves with the anti-rotation sleeve 303, the clamping rod 313 is driven to move, and the clamping rod 313 is clamped with the clamping hole 314, and the supporting ear 101 is further fixed, so as to fix the rotary joint body 1, and ensure that when the rotary joint body 1 is in operation, the outer shell of the rotary joint body 1 is not easy to rotate and shake, thereby improving the sealing and service life of the rotary joint body 1. When the clamping rod 313 is clamped with the clamping hole 314, the supporting ear 101 squeezes the abutment block 403, and the abutment block 403 drives the moving plate 4 02 moves to squeeze the elastic member three 404, and the inclined groove 405 on the moving plate 402 cooperates with the through groove 409 and the T-slot two 408 to drive the adjusting rod 406 and the T-block 407 to move, and the T-block 407 drives the fixing bar 410 and the arc plate 411 to move, and the arc plate 411 clamps and fixes the outer shell of the rotary joint body 1, further ensuring that the rotary joint body 1 is not prone to rotation and shaking during operation, and the rotary joint body 1 is not prone to damage and leakage, thereby further improving the service quality and life of the rotary joint body 1.

[0040] A person skilled in the art should understand that the discussion of any of the above embodiments is only exemplary; within the scope of the present invention, the technical features in the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in detail for the sake of simplicity.

[0041] The present invention is intended to cover all such substitutions, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A large-caliber anti-rotation balanced fixed structure rotary joint, comprising: A rotary joint body (1), wherein a support ear (101) is fixedly mounted on the outer wall of the rotary joint body (1), characterized in that it also comprises: an adjusting mechanism (2), the adjusting mechanism (2) being arranged below the rotating joint body (1), the adjusting mechanism (2) comprising two bases (201) located below the rotating joint body (1), a support tube (202) being fixedly mounted on the top surface of the base (201), a support rod (203) being slidably penetrated and mounted on the top surface of the support tube (202), the adjusting mechanism (2) being used to adjust the balance and height of the rotating joint body (1); a rotation-stopping mechanism (3), the rotation-stopping mechanism (3) being arranged on both sides of the rotary joint body (1), the rotation-stopping mechanism (3) comprising screw sleeves (301) located on both sides of the rotary joint body (1), the inner wall of the screw sleeve (301) being threadedly connected to a screw rod (302), the two ends of the screw rod (302) being respectively threadedly connected to a rotation-stopping sleeve (303) and a rotation-stopping nut (304), the rotation-stopping mechanism (3) being used to fix and limit the rotary joint body (1); A fixing mechanism (4), the fixing mechanism (4) being arranged on both sides of the rotary joint body (1), the fixing mechanism (4) comprising arc-shaped plates (411) for fixing both sides of the rotary joint body (1), fixing strips (410) being fixedly mounted on the outer walls of the arc-shaped plates (411), and the fixing mechanism (4) being used to fix the rotary joint body (1).

2. A large-diameter anti-rotation balanced fixed structure rotary joint according to claim 1, characterized in that: The outer wall of the upper end of the support rod (203) is arranged in a threaded shape, and an adjustment plate (204) is fixedly mounted on the lower end of the support rod (203); the outer wall of the adjustment plate (204) is slidably connected to the inner wall of the support tube (202); an elastic member 2 (206) and an elastic member 1 (205) are fixedly mounted on the upper and lower side surfaces of the adjustment plate (204), respectively; the upper end of the elastic member 2 (206) and the lower end of the elastic member 1 (205) are fixedly connected to the inner walls of the upper and lower ends of the support tube (202), respectively.

3. A large-diameter anti-rotation balanced fixed structure rotary joint according to claim 2, characterized in that: An adjusting sleeve (207) is threadedly mounted on the upper end of the support rod (203), and a fixing nut (208) is threadedly connected to the middle outer wall of the support rod (203), wherein the top surface of the fixing nut (208) contacts the bottom surface of the adjusting sleeve (207).

4. A large-diameter anti-rotation balanced fixed structure rotary joint according to claim 3, characterized in that: The outer wall of the screw sleeve (301) is fixedly connected to the upper end of the adjustment sleeve (207), the outer wall of the screw rod (302) is slidably connected to the inner wall of the support ear (101), and one end of the anti-rotation sleeve (303) and one end of the anti-rotation nut (304) are in contact with two side surfaces of the support ear (101).

5. A large-caliber anti-rotation balanced fixed structure rotary joint according to claim 4, characterized in that: Two limit bars (305) are fixedly mounted on the outer wall of the adjustment sleeve (207); a movable sleeve (306) is slidably mounted on the outer wall of the adjustment sleeve (207); two limit grooves (307) are provided on the inner wall of the movable sleeve (306); the inner walls of the limit grooves (307) are slidably connected to the outer walls of the limit bars (305); a support column (311) is hingedly mounted on the outer wall of the movable sleeve (306); a fixed sleeve (312) is hingedly mounted on the other end of the support column (311); and the inner wall of the fixed sleeve (312) is rotatably connected to the outer wall of the anti-rotation sleeve (303) via a bearing seat.

6. A large-diameter anti-rotation balanced fixed structure rotary joint according to claim 5, characterized in that: A T-shaped slot (308) is provided on the side of the limit strip (305), an adjusting bolt (309) is slidably mounted on the inner wall of the T-shaped slot (308), a through hole (310) is penetrated and mounted on the outer wall of the movable sleeve (306), the inner wall of the through hole (310) is slidably connected to the outer wall of one end of the adjusting bolt (309), and a mounting nut is threadedly connected to one end of the adjusting bolt (309).

7. A large-caliber anti-rotation balanced fixed structure rotary joint according to claim 6, characterized in that: A clamping rod (313) is fixedly mounted on the outer wall of the fixing sleeve (312), two clamping holes (314) are provided on the side of the supporting ear (101), and the outer wall of the other end of the clamping rod (313) is slidably connected to the inner wall of the clamping hole (314).

8. A large-diameter anti-rotation balanced fixed structure rotary joint according to claim 7, characterized in that: A cavity (401) is provided inside the clamping rod (313), a movable plate (402) is slidably mounted on the inner wall of the cavity (401), a stop block (403) is fixedly mounted on the side of the movable plate (402), one end of the stop block (403) slides through the inner wall of the cavity (401) and extends to the outside of the clamping rod (313), and the side of the stop block (403) is movably connected to the side of the support ear (101).

9. A large-diameter anti-rotation balanced fixed structure rotary joint according to claim 8, characterized in that: An elastic member three (404) is fixedly installed on the side of the movable plate (402), and the other end of the elastic member three (404) is fixedly connected to the inner wall of the cavity (401). The upper and lower sides of the clamping rod (313) are respectively provided with T-shaped grooves two (408), and the inner walls of the two T-shaped grooves two (408) are respectively slidably connected with T-shaped blocks (407), and the sides of the T-shaped blocks (407) are fixedly connected to one end of the fixing strip (410), and the inner wall of the arc plate (411) is in contact with the outer wall of the rotary joint body (1).

10. A large-diameter anti-rotation balanced fixed structure rotary joint according to claim 9, characterized in that: A through slot (409) is formed through the inner wall of the second T-shaped slot (408), and an adjusting rod (406) is fixedly installed on the sides of the two T-shaped blocks (407) close to each other. An inclined slot (405) is formed through the top surface of the movable plate (402), and the outer wall of the adjusting rod (406) is slidably connected to the inner wall of the inclined slot (405) and the inner wall of the through slot (409) respectively.

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