Anti-deflection rotating joint with hose

Abstract

The invention relates to the technical field of aircraft hydraulic systems, in particular to an anti-deflection rotating joint with a hose, which comprises two rotating pairs, the rotating pairs comprise connecting seats and inlets and outlets, the rotating pairs are provided with circulation channels, fluid circulates through the circulation channels and the inlets and outlets, the hose is mounted on the inlets and outlets, and the hose is connected with the connecting seats. The hose assembly is used for communicating the circulation channels of the two revolute pairs, the hose can deform according to deviation of the revolute pairs and keep the circulation channels of the two revolute pairs communicating with each other, the damping sleeve is provided with a hollow cavity, and a traditional metal pipeline is replaced with the hose assembly; axial, radial and angular displacements generated by offset load are absorbed and compensated by utilizing the flexibility characteristic of the hose, meanwhile, progressive limiting is realized by matching with the damping unit, and before the radial offset of the revolute pair is close to the maximum deformation value of the hose, the damping force is increased along with the increase of the offset, so that the influence on the sealing property of the joint of the hose and the revolute pair is avoided; and the effects of uniform stress and smooth rotation of the sealing surface are achieved.

Description

Technical Field

[0001] This invention relates to the field of aircraft hydraulic system technology, specifically to an anti-yawing rotary joint with a hose. Background Technology

[0002] Existing aircraft hydraulic systems mostly use long-arm rotating joints with welded metal pipe connections, and the rotating pairs are rigidly fitted together. Each rotating pair has inlet and outlet ports and internal flow channels, allowing relative rotation to accommodate the connection between fixed pipes and moving components such as landing gear and control surfaces. The core of the system is to achieve stable transmission of high-pressure hydraulic oil through rigid metal pipes, relying on the fit clearance of the rotating pairs themselves to accommodate minute angular changes, without a dedicated displacement compensation structure.

[0003] This type of rotary joint has a key technical defect: the metal pipeline is rigid and lacks the ability to compensate for axial, radial, and angular displacements. However, unavoidable installation errors during aircraft assembly (such as coaxiality deviations), as well as vibrations and load fluctuations during operation (such as landing impacts and airflow disturbances), generate off-center loads and lateral forces. These forces cannot be buffered by rigid connections and are directly transmitted to the rotating sealing surface of the rotating pair (a precision core component), resulting in uneven stress on the sealing surface, severe wear, and damage to the seal integrity, leading to high-pressure hydraulic oil leakage. At the same time, off-center loads increase the frictional torque of the mating surfaces of the rotating pair, causing rotational jamming and affecting the accuracy and response speed of moving parts such as landing gear retraction and extension, and control surface deflection. In the long run, off-center loads can also cause stress concentration in the welded metal pipeline, leading to weld cracking, pipeline deformation, and ultimately damage to the overall joint structure, shortening the replacement cycle of the rotary joint and seals, and seriously threatening the safety and stability of the aircraft's hydraulic system. Summary of the Invention

[0004] The purpose of this invention is to provide an anti-sway rotary joint with a flexible hose to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: An anti-sway rotary joint with a flexible hose includes two rotary pairs. Each rotary pair includes a connecting seat and an inlet / outlet. The rotary pair has a flow channel through which fluid flows. A flexible hose, installed at the inlet and outlet, is used to connect the flow channels of the two rotating pairs. The flexible hose can deform according to the offset of the rotating pairs and keep the flow channels of the two rotating pairs connected to each other. A damping sleeve has a hollow cavity with a drive shaft inside. The drive shaft is connected to a connecting seat. When the rotating pair undergoes radial or axial displacement, it drives the drive shaft to move, so that the hollow cavity provides damping force, ensuring that the displacement distance of the rotating pair does not exceed the maximum deformation value of the hose. A reinforcing unit, which is installed on the damping sleeve, includes an air bladder and an air guide tube. When the rotating pair undergoes radial or axial displacement, gas is generated by compression through the air bladder and delivered to the connecting seat through the air guide tube, thereby enhancing the rotational sealing performance at the connection between the rotating pair and the hose.

[0006] Preferably, the damping sleeve further includes a damping cavity, a displacement cavity, and a filter plate. The damping cavity and the displacement cavity together form the hollow cavity of the damping sleeve. The inner cavity of the damping cavity is filled with hydraulic oil. The filter plate is fixedly connected to one end of the drive shaft. The surface of the filter plate is provided with oil filter holes. When the rotating pair moves radially, the filter plate moves in the hollow cavity. When the filter plate moves to the damping cavity, it generates a damping force.

[0007] Preferably, a transmission unit is provided at the other end of the transmission shaft, and a movable chamber is provided in the connecting seat. The transmission unit includes a first rack, a second rack, and a gear. The first rack is disposed in the movable chamber of the connecting seat, and one end of the first rack is fixedly connected to the transmission shaft. The second rack is fixedly connected to one side of the movable chamber, and the first rack and the second rack mesh with the gear simultaneously.

[0008] Preferably, an airbag is provided in the inner cavity of the reinforcing unit, a pressure plate is fixedly connected to one end of the airbag, an air guide tube is fixedly connected to the reinforcing unit, a reinforcing sealing ring is provided on the inner wall of the inlet and outlet, the air guide tube is connected to the inner cavity of the airbag in the inlet and outlet respectively, and after the filter plate moves to the inner cavity of the damping cavity, the pressure plate moves and compresses the airbag to deform it.

[0009] Preferably, the hollow cavity of the damping sleeve is provided with a leak prevention unit at the connection between the displacement cavity and the damping cavity. The leak prevention unit includes a leak prevention plate, a fixing strip, and a movable plate. There are at least two leak prevention plates, and the leak prevention plates are connected to the movable plates through the fixing strips. The movable plate is set with an inclined surface on the side facing the transmission shaft. One side of the fixing strip is connected to the side wall of the damping sleeve through a torsion spring.

[0010] Preferably, a second magnetic ring is fixedly installed on the pressure plate, and a first magnetic ring is fixedly installed on the outer edge of the filter plate, wherein the second magnetic ring attracts the corresponding surface of the filter plate.

[0011] Preferably, fixing nuts are fixedly installed at both ends of the hose, and the fixing nuts are fixedly connected to the damping sleeve. The position of the hose is fixed by fixing the fixing nuts to the damping sleeve.

[0012] Preferably, a sealing plug is provided at the connection between the leak-proof plate and the drive shaft. The sealing plug is installed in the mounting groove of the leak-proof plate and connected by a spring. The sealing plug has room to move in the mounting groove.

[0013] Preferably, an anti-detachment block is provided on each side of the first rack to prevent the first rack from detaching from the inner cavity of the movable chamber.

[0014] Preferably, the side of the sealing plug facing the damping cavity is configured as an inclined surface, and the inclined surface is adapted to one end of the drive shaft.

[0015] Compared with the prior art, the beneficial effects of the present invention are: 1. In this invention, a flexible hose assembly replaces the traditional metal pipe. The flexible characteristics of the hose absorb and compensate for the axial, radial and angular displacements caused by the off-center load. At the same time, a damping unit is used to achieve progressive limiting. Before the radial offset of the rotating joint approaches the maximum deformation value of the hose, the damping force increases with the offset, so as to avoid affecting the sealing performance of the connection between the hose and the rotating joint, and achieve the effect of uniform force on the sealing surface and smooth rotation. 2. In addition, the rotating unit and the damping sleeve work together. When the rotating pair undergoes axial displacement or angular tilt, the damping sleeve generates damping force synchronously. The closer the offset is to the maximum axial and angular deformation value of the hose, the stronger the damping force, forming double protection. This avoids structural fatigue of the hose due to excessive axial stretching or excessive angular deflection, further ensuring the stability of the connection between the hose and the rotating pair and extending the service life of the hose.

[0016] 3. Based on the above structure, by cooperating with the reinforcing unit on the damping unit and the reinforcing sealing ring, when the damping unit increases its damping force due to the increased offset of the rotating pair, the reinforcing unit simultaneously injects gas into the reinforcing sealing ring, so that the sealing ring presses tightly against the sealing surface as the off-center load increases, further enhancing the sealing reliability between the rotating pair and the hose. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram showing the connection between the rotating joint and the hose in this invention; Figure 3 For the present invention Figure 2 Enlarged view of the structure of area A in the middle; Figure 4 This is a partial structural cross-sectional view of the damping sleeve in this invention; Figure 5 This is a schematic diagram of the overall structure of the transmission unit in this invention; Figure 6 This is a schematic diagram of the overall structure of the anti-leakage unit in this invention, and it shows the filter plate; Figure 7 This is an enlarged view of the connection between the anti-leakage plate and the drive shaft in this invention; Figure 8 This is a cross-sectional view of the overall structure of the reinforcing unit in this invention; Figure 9 For the present invention Figure 8 Enlarged view of the structure in area B.

[0018] In the diagram: 100, rotating pair; 110, connecting seat; 111, movable chamber; 120, inlet / outlet; 121, reinforcing sealing ring; 200, hose; 210, fixing nut; 300, damping sleeve; 310, drive shaft; 320, damping cavity; 330, displacement cavity; 340, filter plate; 341, first magnetic ring; 350, anti-leakage unit; 351, anti-leakage plate; 352, fixing strip; 353, movable plate; 354, sealing plug; 360, transmission unit; 361, first rack; 362, second rack; 363, gear; 364, anti-detachment block; 400, reinforcing unit; 410, airbag; 420, pressure plate; 421, second magnetic ring; 430, air guide pipe. Detailed Implementation

[0019] To enable those skilled in the art to better understand the technical solutions in this application, the technical solutions in the embodiments of this application will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0020] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0021] like Figures 1-2 The embodiment shown discloses an anti-sway rotary joint with a flexible hose, including... Rotary joint 100, which is provided in two, each rotary joint 100 includes a connecting seat 110 and an inlet / outlet 120. Rotary joint 100 has a flow channel, through which fluid flows. The hose 200 is installed on the inlet and outlet 120 and is used to connect the flow channels of the two rotating joints 100. The hose 200 can deform according to the offset of the rotating joints 100 and keep the flow channels of the two rotating joints 100 connected to each other. The damping sleeve 300 has a hollow cavity, inside which a drive shaft 310 is provided. The drive shaft 310 is connected to the connecting seat 110. When the rotating pair 100 causes radial or axial displacement, it drives the drive shaft 310 to move, so that the hollow cavity provides damping force, ensuring that the displacement distance of the rotating pair 100 does not exceed the maximum deformation value of the hose 200. A reinforcing unit 400, mounted on the damping sleeve 300, includes an airbag 410 and an air duct 430. When the rotating pair 100 experiences radial or axial displacement, gas is compressed in the airbag 410 and delivered to the connector 110 via the air duct 430, enhancing the rotational sealing performance at the connection between the rotating pair 100 and the hose 200. The hose 200 is made of materials such as metal bellows, high-pressure rubber hose, and Teflon hose. During takeoff or landing, when the rotating pair 100 experiences radial, axial, or tilting displacement, the hose 200 deforms accordingly to absorb the off-center load generated by the rotating pair 100, preventing these forces from being transmitted to the connection between the rotating pair 100 and the hose 200, thus ensuring the sealing performance at the connection. When the offset exceeds the limit deformation value of the hose 200, since the drive shaft 310 is connected to the connecting seat 110, the offset of the rotating pair 100 drives the damping sleeve 300 to move in the hollow cavity. As the offset distance of the rotating pair 100 increases, the movement of the filter plate 340 in the damping cavity 320 is obstructed, and the damping force of the hydraulic oil through the filter hole gradually increases. This prevents the hose 200 from exceeding the maximum deformation distance and affecting the sealing performance at the connection between the rotating pair 100 and the hose 200. By setting the reinforcing unit 400, as the offset distance of the rotating pair 100 increases, the amount of gas released by the airbag 410 increases accordingly, and the gas is delivered to the connecting seat 110 through the air guide pipe 430, which enhances the sealing performance between the rotating pair 100 and the hose 200 and further prevents the rotating pair 100 from affecting the rotational sealing performance between it and the hose 200 due to off-center loading.

[0022] like Figures 3-4As shown, the damping sleeve 300 also includes a damping cavity 320, a displacement cavity 330, and a filter plate 340. The damping cavity 320 and the displacement cavity 330 together form the hollow cavity of the damping sleeve 300. The inner cavity of the damping cavity 320 is filled with hydraulic oil. The filter plate 340 is fixedly connected to one end of the drive shaft 310. The surface of the filter plate 340 is provided with filter holes. When the rotating joint 100 moves radially, the filter plate 340 moves in the hollow cavity. When the filter plate 340 moves to the damping cavity 320, it generates a damping force. Since one end of the drive shaft 310 is connected to the connecting seat 110, when the rotating joint 100 moves radially, the connecting seat 110 drives the drive shaft 310 to move, causing the filter plate 340 to first move in the inner cavity of the displacement cavity 330. When the filter plate 340 moves to the damping cavity 320, it generates a damping force. After the filter plate 340 moves into the inner cavity of the damping cavity 320, the movement of the damping cavity 320 is resisted because the inner cavity of the damping cavity 320 is filled with hydraulic oil. The hydraulic oil passes through the filter holes opened on the surface of the damping cavity 320, generating a damping force. This makes the filter plate 340 require more force to move in the inner cavity of the damping cavity 320, effectively relieving the radial offset generated by the rotating pair 100. At the same time, when the filter plate 340 moves to the end of the damping cavity 320 (close to the end of the rotating pair 100), it is blocked by the end of the damping cavity 320 and cannot continue to move. This gives the rotating pair 100 the maximum radial offset distance, which is less than the stretchable length of the hose 200. This prevents the sealing effect at the connection between the hose 200 and the rotating pair 100 from being affected after the hose 200 is stretched to its limit.

[0023] like Figures 3-5 As shown, a transmission unit 360 is provided at the other end of the transmission shaft 310. A movable chamber 361 is provided in the connecting seat 110. The transmission unit 360 includes a first rack 361, a second rack 362, and a gear 363. The first rack 361 is disposed in the movable chamber 111 of the connecting seat 110, and one end of the first rack 361 is fixedly connected to the transmission shaft 310. The second rack 362 is fixedly connected to one side of the movable chamber 111. The first rack 361 and the second rack 362 simultaneously mesh with the gear 363. When the rotating joint 100 undergoes axial displacement, the connecting seat 110 moves up and down with the rotating joint 100, while the second rack 362... The rack 362 moves up and down with the connecting seat 110, while the first rack 361 is set in the movable chamber 111 and fixedly connected to the drive shaft 310 without moving. The second rack 362 moves to drive the gear 363 to rotate, and the gear 363 rotates to drive the first rack 361 to translate, thereby causing the drive shaft 310 to drive the filter plate 340 to move. When the filter plate 340 moves into the damping chamber 320, the generation of damping force makes the axial movement of the rotating pair 100 resisted and limits the axial offset distance of the rotating pair 100, so as to avoid the rotating pair 100 from moving too far axially and causing the hose 200 to be stretched to the limit distance.

[0024] like Figures 8-9As shown, an airbag 410 is installed in the inner cavity of the reinforcing unit 400. A pressure plate 420 is fixedly connected to one end of the airbag 410. An air guide pipe 430 is fixedly connected to the reinforcing unit 400. A reinforcing sealing ring 121 is installed on the inner wall of the inlet and outlet 120. The air guide pipe 430 is connected to the inner cavity of the airbag 410 in the inlet and outlet 120 respectively. After the filter plate 340 moves into the inner cavity of the damping cavity 320, the pressure plate 420 moves and compresses the airbag 410, causing it to deform. When the filter plate 340 moves into the inner cavity of the damping cavity 320, it generates resistance to the axial or radial displacement of the rotating pair 100. As the filter plate 340 gets closer to the port position of the damping cavity 320, the surface... The greater the offset distance generated by the rotating pair 100, the more the pressure plate 420 moves along with the filter plate 340, causing it to compress the air bladder 410. This causes the air bladder 410 to deform, compressing its internal space. The gas inside the air bladder 410 is then transmitted to the reinforcing sealing ring 121 through the air guide pipe 430, causing the reinforcing sealing ring 121 to expand in volume. The hose 200 is connected to the rotating pair 100 through the inlet and outlet 120 and is sealed. When the volume of the reinforcing sealing ring 121 expands, it further enhances the sealing effect between the rotating pair 100 and the hose 200, resulting in a greater offset distance for the rotating pair 100 and a stronger sealing effect at its connection with the hose 200.

[0025] like Figure 6 As shown, a leak-proof unit 350 is provided at the connection between the displacement cavity 330 and the damping cavity 320 in the hollow cavity of the damping sleeve 300. The leak-proof unit 350 includes a leak-proof plate 351, a fixing strip 352, and a movable plate 353. There are at least two leak-proof plates 351, and the movable plate 353 is connected to the leak-proof plate 351 through the fixing strip 352. The side of the movable plate 353 facing the drive shaft 310 is set as an inclined surface. One side of the fixing strip 352 is connected to the side wall of the damping sleeve 300 through a torsion spring. When the filter plate 340 moves to the junction of the displacement cavity 330 and the damping cavity 320, the filter plate 340... The outer contact movable plate 353, due to the inclined surface of the movable plate 353, under the compression of the first magnetic ring 341, the distance between the two movable plates 353 gradually increases. Since the movable plate 353 is connected to the anti-leakage plate 351 through the fixing strip 352, the two anti-leakage plates 351 move back and forth, causing the two anti-leakage plates 351 to leave the hollow cavity of the damping sleeve 300 at the same time, while the filter plate 340 can enter the damping cavity 320. The setting of the anti-leakage unit 350 can prevent the hydraulic oil in the damping cavity 320 from entering the displacement cavity 330, and maintain the hydraulic oil in the damping cavity 320 to provide sufficient damping force.

[0026] like Figure 6 , Figure 9As shown, a second magnetic ring 421 is fixedly installed on the pressure plate 420, and a first magnetic ring 341 is fixedly installed on the outer edge of the filter plate 340. The second magnetic ring 421 and the corresponding surface of the filter plate 340 attract each other. When the filter plate 340 enters the inner cavity of the damping cavity 320, the first magnetic ring 341 and the second magnetic ring 421 attract each other, causing the filter plate 340 to move in the inner cavity of the damping cavity 320, thereby driving the pressure plate 420 to move. Thus, according to the offset distance of the rotating pair 100, the degree of compression of the airbag 410 is adjusted, so that the sealing effect between the rotating pair 100 and the hose 200 is improved according to the offset distance of the rotating pair 100.

[0027] like Figure 3 As shown, fixing nuts 210 are fixedly installed at both ends of the hose 200. The fixing nuts 210 are fixedly connected to the damping sleeve 300. By fixing the fixing nuts 210 to the damping sleeve 300, the position of the hose 200 is fixed, so as to prevent the damping sleeve 300 from moving when the rotating pair 100 is offset, which would cause the damping force provided by the hollow cavity of the damping sleeve 300 to fail.

[0028] like Figure 7 As shown, a sealing plug 354 is provided at the connection between the anti-leakage plate 351 and the drive shaft 310. The sealing plug 354 is installed in the mounting groove opened in the anti-leakage plate 351 and is connected by a spring. The sealing plug 354 has a movable space in the mounting groove. When the filter plate 340 passes through the anti-leakage plate 351 and enters the inner cavity of the damping cavity 320, the spring loses pressure and causes the sealing plug 354 to rebound. The two sealing plugs 354 come into contact, which can effectively prevent the hydraulic oil in the damping cavity 320 from leaking into the displacement cavity 330.

[0029] like Figure 5 As shown, an anti-detachment block 364 is provided on each side of the first rack 361 to prevent the first rack 361 from detaching from the inner cavity of the movable chamber 111. This prevents the first rack 361 from detaching from the inner cavity of the movable chamber 111 when the rotating pair 100 moves radially, thus avoiding the disconnection between the transmission shaft 310 and the connecting seat 110 and the damping sleeve 300 from providing damping force.

[0030] like Figure 7 As shown, the side of the sealing plug 354 facing the damping cavity 320 is set as an inclined surface, and the inclined surface is adapted to one end of the drive shaft 310. When the radial and axial offset of the rotating pair 100 disappears, that is, when the rotating pair 100 returns to its original position, the filter plate 340 needs to re-enter the inner cavity of the displacement cavity 330, so that the drive shaft 310 contacts the inclined surface of the sealing plug 354 and is given a thrust, so that the sealing plug 354 is embedded in the mounting groove opened in the anti-leakage plate 351, providing space for the drive shaft 310 to pass through.

[0031] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. The present invention is not limited to the above embodiments; the embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this invention is defined by the appended claims and their equivalents.

Claims

1. A sway-resistant rotary joint with a flexible hose, characterized in that: include Two rotary joints (100) are provided, each of which includes a connecting seat (110) and an inlet / outlet (120). The rotary joint (100) has a flow channel through which fluid flows. A hose (200) is installed on the inlet and outlet (120) to connect the flow channels of the two rotating pairs (100). The hose (200) can deform according to the offset of the rotating pairs (100) and keep the flow channels of the two rotating pairs (100) connected to each other. The damping sleeve (300) has a hollow cavity with a drive shaft (310) inside. The drive shaft (310) is connected to the connecting seat (110). When the rotating pair (100) causes radial or axial displacement, it drives the drive shaft (310) to move, so that the hollow cavity provides damping force, and the displacement distance of the rotating pair (100) does not exceed the maximum deformation value of the hose (200). A reinforcing unit (400) is mounted on a damping sleeve (300). The reinforcing unit (400) includes an air bladder (410) and an air guide tube (430). When the rotating pair (100) experiences radial or axial displacement, gas is generated by compression through the air bladder (410) and transported to the connecting seat (110) through the air guide tube (430), thereby enhancing the rotational sealing performance at the connection between the rotating pair (100) and the hose (200).

2. The anti-sway rotary joint with a flexible hose according to claim 1, characterized in that: The damping sleeve (300) also includes a damping cavity (320), a displacement cavity (330), and a filter plate (340). The damping cavity (320) and the displacement cavity (330) together form the hollow cavity of the damping sleeve (300). The inner cavity of the damping cavity (320) is filled with hydraulic oil. The filter plate (340) is fixedly connected to one end of the transmission shaft (310). The surface of the filter plate (340) is provided with oil filter holes. When the rotating pair (100) moves radially, the filter plate (340) moves in the hollow cavity. When the filter plate (340) moves to the damping cavity (320), a damping force is generated.

3. The anti-sway rotary joint with a flexible hose according to claim 2, characterized in that: A transmission unit (360) is provided at the other end of the transmission shaft (310). A movable chamber (111) is provided in the connecting seat (110). The transmission unit (360) includes a first rack (361), a second rack (362), and a gear (363). The first rack (361) is provided in the movable chamber (111) of the connecting seat (110), and one end of the first rack (361) is fixedly connected to the transmission shaft (310). The second rack (362) is fixedly connected to one side of the movable chamber (111). The first rack (361) and the second rack (362) mesh with the gear (363) at the same time.

4. The anti-sway rotary joint with a flexible hose according to claim 2, characterized in that: An airbag (410) is provided in the inner cavity of the reinforcing unit (400). A pressure plate (420) is fixedly connected to one end of the airbag (410). An air guide pipe (430) is fixedly connected to the reinforcing unit (400). A reinforcing sealing ring (121) is provided on the inner wall of the inlet and outlet (120). The air guide pipe (430) is connected to the inner cavity of the airbag (410) in the inlet and outlet (120) respectively. After the filter plate (340) moves to the inner cavity of the damping cavity (320), the pressure plate (420) moves and compresses the airbag (410) to deform it.

5. The anti-sway rotary joint with a flexible hose according to claim 3, characterized in that: The hollow cavity of the damping sleeve (300) is provided with a leak prevention unit (350) at the connection between the displacement cavity (330) and the damping cavity (320). The leak prevention unit (350) includes a leak prevention plate (351), a fixing strip (352), and a movable plate (353). The number of leak prevention plates (351) is at least two, and the leak prevention plate (351) is connected to the movable plate (353) through the fixing strip (352). The side of the movable plate (353) facing the transmission shaft (310) is set as an inclined surface. One side of the fixing strip (352) is connected to the side wall of the damping sleeve (300) through a torsion spring.

6. The anti-yawing rotary joint with a flexible hose according to claim 4, characterized in that: A second magnetic ring (421) is fixedly installed on the pressure plate (420), and a first magnetic ring (341) is fixedly installed on the outer edge of the filter plate (340). The second magnetic ring (421) and the corresponding surface of the filter plate (340) attract each other.

7. The anti-sway rotary joint with a flexible hose according to claim 1, characterized in that: The two ends of the hose (200) are fixedly installed with fixing nuts (210), and the fixing nuts (210) are fixedly connected to the damping sleeve (300). The position of the hose (200) is fixed by fixing the fixing nuts (210) and the damping sleeve (300).

8. The anti-sway rotary joint with a flexible hose according to claim 5, characterized in that: A sealing plug (354) is provided at the connection between the leak-proof plate (351) and the drive shaft (310). The sealing plug (354) is installed in the mounting groove opened in the leak-proof plate (351) and connected by a spring. The sealing plug (354) has room to move in the mounting groove.

9. The anti-sway rotary joint with a flexible hose according to claim 3, characterized in that: An anti-detachment block (364) is provided on each side of the first rack (361) to prevent the first rack (361) from detaching from the inner cavity of the movable chamber (111).

10. The anti-sway rotary joint with a flexible hose according to claim 8, characterized in that: The sealing plug (354) is configured with an inclined surface on the side facing the damping cavity (320), and the inclined surface is adapted to one end of the drive shaft (310).

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