Magnetic composite water-lubricated rubber bearing with shock resistance

Abstract

The invention discloses a magnetic composite water-lubricated rubber bearing with shock resistance, which comprises a composite bearing and a dismounting tool, a driving shaft is arranged in the composite bearing, the composite bearing comprises a bearing outer sleeve, three groups of fixing ports are formed in the bearing outer sleeve, and the fixing ports are connected with the driving shaft. A magnetic suspension assembly and two groups of buffer assemblies are arranged in the bearing outer sleeve; the magnetic suspension assembly is arranged in the bearing outer sleeve, suspension supporting is formed on the driving shaft through magnetic field force, in the starting and stopping stage or the low-speed rotating stage of the driving shaft, a small gap can be kept between the driving shaft and the rubber bases, direct contact abrasion is reduced, meanwhile, the two sets of rubber bases distributed in an array mode are arranged, and the service life of the driving shaft is prolonged. The use states of the two sets of rubber bases can be switched through the rolling assemblies, continuous operation of equipment is guaranteed, and when the two sets of rubber bases are used synchronously, a synergetic anti-impact structure can be formed, impact loads can be dispersed, and the impact resistance is effectively improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of water-lubricated bearings, and particularly relates to a magnetic composite water-lubricated rubber bearing with impact resistance. BACKGROUND

[0002] The water-lubricated bearing uses water as a lubricating medium, has the advantages of green environmental protection, no oil pollution, and adaptation to humid and harsh working conditions, and is widely used in fields such as ship propulsion, water conservancy machinery, and chemical pump valves. The core working principle is to realize lubrication and wear reduction through a water film by cooperation of the bearing inner sleeve and the shaft, and to ensure stable rotation of the shaft. However, the existing common water-lubricated rubber bearing is prone to water film rupture during start-stop or slow rotation, and the shaft directly contacts the rubber inner sleeve, resulting in serious wear and shortening the service life of the bearing. Moreover, the common water-lubricated bearing generally only has one integral rubber inner sleeve, which needs to be replaced as a whole when the rubber inner sleeve is worn, resulting in high cost. In addition, the impact resistance of the single rubber inner sleeve structure is limited, and it is difficult to resist frequent impact loads in the working conditions. Furthermore, the maintenance and replacement need to stop the equipment for disassembly, resulting in interruption of production or operation, low maintenance efficiency, and high cost, which cannot meet the core requirements of long-term stability, strong impact resistance, and convenient maintenance. SUMMARY

[0003] The present application aims to solve the problems in the prior art that the common water-lubricated rubber bearing is prone to serious wear of the shaft and the rubber inner sleeve during start-stop or slow rotation, and the rubber inner sleeve needs to be replaced as a whole when it is worn, resulting in high cost. In addition, the impact resistance of the single rubber inner sleeve structure is limited, and it is difficult to resist frequent impact loads in the working conditions. Furthermore, the maintenance and replacement need to stop the equipment for disassembly, resulting in interruption of production or operation, low maintenance efficiency, and high cost, which cannot meet the core requirements of long-term stability, strong impact resistance, and convenient maintenance.

[0004] To achieve the above-mentioned purpose, the present application adopts the following technical solutions: A magnetic composite water-lubricated rubber bearing with impact resistance, comprising a composite bearing and a disassembly tool, and a driving shaft is arranged in the composite bearing. The composite bearing comprises a bearing outer sleeve, three groups of fixing ports are formed in the bearing outer sleeve, a magnetic floating assembly and two groups of buffer assemblies are arranged in the bearing outer sleeve, one rolling assembly is arranged outside the two groups of buffer assemblies, and one detachable assembly is assembled and connected to each group of buffer assemblies. When the fixed seats of the rolling assembly are respectively located at the top and bottom fixing port positions, the two groups of driving shafts are switched to be attached to the driving shaft, and after switching, the two groups of driving shafts are alternately replaced. When the fixed seat moves to the middle one of the fixing port positions, the two groups of detachable assemblies are attached to the driving shaft.

[0005] Preferably, the magnetic levitation assembly includes a magnetic module and a rubber sealing ring. The magnetic module is installed inside the bearing outer sleeve, and the rubber sealing ring is installed on the bearing outer sleeve to seal the magnetic module.

[0006] Preferably, each set of buffer components and detachable components comprises five components. Each buffer component includes two spring buffer structures, which are fixedly connected to the bearing outer sleeve. One end of each spring buffer structure is fixedly connected to an assembly plate. A roller is provided above the assembly plate, and a locking opening is provided on the assembly plate.

[0007] Preferably, the detachable component includes a rubber base with an mounting rail, the assembly plate is configured in a dovetail shape, and the mounting rail is adapted to the shape of the assembly plate.

[0008] Preferably, one end of the mounting rail is fixedly connected to a limiting plate and a side stop, the side stop has a guide opening, a slide rod is fixedly connected in the guide opening, a movable frame is slidably connected on the slide rod, one end of the movable frame has a latch, and the other end of the movable frame is fixedly connected to a locking pin, the size of the locking pin being adapted to the locking opening.

[0009] Preferably, a spring is fixedly connected between the lower part of the movable frame and the bottom wall of the guide opening.

[0010] Preferably, the disassembly tool includes an operating ring, with multiple arc-shaped protrusions arranged around its circumference. Each arc-shaped protrusion is provided with a locking rod, the locking rod being adapted to the size of the locking slot.

[0011] Preferably, the rolling assembly includes a rolling ring with an annular groove, the annular groove being slidably connected to an annular bar, and the annular bar being fixedly connected to the bearing outer sleeve.

[0012] Preferably, the roller ring has multiple notches, which are trapezoidal in shape. By rolling the roller ring, the roller body can switch between rolling on the inner surface of the notches and the inner surface of the roller ring.

[0013] Preferably, a fixed seat is fixedly connected to the rolling ring, the fixed seat is slidably connected to the movable opening, the movable opening is opened on the bearing outer sleeve, and the fixed seat is provided with a locking bolt adapted to the size of the fixed opening, and the number of fixed openings in each group is two.

[0014] Compared with the prior art, the present invention provides a magnetic composite water-lubricated rubber bearing with impact resistance, which has the following beneficial effects: This impact-resistant magnetic composite water-lubricated rubber bearing uses a built-in magnetic levitation component in the bearing housing to create a levitation support for the drive shaft through magnetic force. During the start-up, shutdown, or slow rotation of the drive shaft, it can maintain a small gap between the drive shaft and the rubber seat, reducing direct contact wear. At the same time, it is equipped with two sets of arrayed rubber seats, and the use status of the two sets of rubber seats can be switched by a rolling component to ensure continuous operation of the equipment. When both sets are used simultaneously, they can form a synergistic impact-resistant structure to disperse impact loads and effectively improve impact resistance. This impact-resistant magnetic composite water-lubricated rubber bearing can be quickly connected to an unused set of detachable components using a disassembly tool. It allows for the rapid disassembly of an idle set of detachable components, facilitating replacement or maintenance without the need for equipment disassembly or production shutdown. This impact-resistant magnetic composite water-lubricated rubber bearing provides a stable foundation for switching between two sets of detachable components and online maintenance through a magnetic levitation assembly. The drive shaft runs smoothly in the suspended state, ensuring that no additional friction damage occurs when the rolling assembly and buffer assembly switch between detachable components, thus guaranteeing a safe and reliable switching process. Furthermore, the switchable design provides a prerequisite for rapid online maintenance. With the help of disassembly tools, maintenance of idle rubber bearing seats can be completed simultaneously during normal equipment operation. At the same time, the rubber bearing seats can be switched back into use at any time after online maintenance, ensuring that both sets of rubber bearing seats are always in good working condition, further enhancing the effect of magnetic composite levitation and the synergistic impact resistance of the two sets. Attached Figure Description

[0015] Figure 1 This is a perspective view of a magnetic composite water-lubricated rubber bearing with impact resistance proposed in this invention. Figure 2 This is a perspective view of the connection between the drive shaft and the composite bearing of a magnetic composite water-lubricated rubber bearing with impact resistance proposed in this invention. Figure 3 This is a three-dimensional cross-sectional view of a magnetic composite water-lubricated rubber bearing with impact resistance proposed in this invention. Figure 4 This is a perspective view of the bearing outer sleeve of a magnetic composite water-lubricated rubber bearing with impact resistance proposed in this invention. Figure 5 This is a three-dimensional cross-sectional view of the bearing outer sleeve of a magnetic composite water-lubricated rubber bearing with impact resistance proposed in this invention. Figure 6 This is a cross-sectional perspective view of a buffer assembly for a magnetic composite water-lubricated rubber bearing with impact resistance proposed in this invention. Figure 7 This is a perspective view of the disassembly tool and detachable components of a magnetic composite water-lubricated rubber bearing with impact resistance proposed in this invention. Figure 8 This is a perspective view of the mounting rail of a magnetic composite water-lubricated rubber bearing with impact resistance proposed in this invention. Figure 9 This is a perspective view of a disassembly tool for a magnetic composite water-lubricated rubber bearing with impact resistance, as proposed in this invention. Figure 10 In this invention Figure 8 Enlarged view of point A; Figure 11 This is a perspective view of the rolling assembly of a magnetic composite water-lubricated rubber bearing with impact resistance proposed in this invention.

[0016] In the diagram: 100, Composite bearing; 101, Bearing outer sleeve; 102, Magnetic levitation component; 1021, Magnetic module; 1022, Rubber sealing ring; 103, Fixed port; 104, Movable port; 105, Rolling component; 1051, Rolling ring; 1052, Fixed seat; 1053, Annular groove; 1054, Annular bar; 1055, Notch; 106, Buffer component; 1061, Spring buffer structure; 10 62. Roller body; 1063. Assembly plate; 107. Detachable component; 1071. Rubber seat; 1072. Mounting rail; 1073. Limiting plate; 1074. Side guard; 1075. Guide port; 1076. Locking pin; 1077. Spring; 1078. Slide rod; 1079. Movable frame; 200. Drive shaft; 300. Disassembly tool; 301. Operating ring; 302. Arc-shaped protrusion; 303. Locking rod. Detailed Implementation

[0017] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0018] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0019] Example 1: Refer to Figures 1-8 and Figure 11 A magnetic composite water-lubricated rubber bearing with impact resistance includes a composite bearing 100 and a disassembly tool 300, wherein a drive shaft 200 is provided in the composite bearing 100. The composite bearing 100 includes a bearing outer sleeve 101 with three sets of fixing openings 103. Inside the bearing outer sleeve 101 are a magnetic levitation assembly 102 and two sets of buffer assemblies 106. The magnetic levitation assembly 102 includes a magnetic module 1021 and a rubber sealing ring 1022. The magnetic module 1021 is installed inside the bearing outer sleeve 101, and the rubber sealing ring 1022 is installed on the bearing outer sleeve 101 and seals the magnetic module 1021. The rubber sealing ring 1022 provides a sealed and protective function for the magnetic module 1021. Each set of buffer assemblies 106 and detachable assemblies 107 consists of five components. Each buffer assembly 106 includes two spring buffer structures 1061. When the rolling ring 1051 rotates, the assembly plate 1063 engages with the recess 1061. Corresponding to 055, at this time, the spring buffer structure 1061 can drive the detachable component 107 away from the drive shaft 200, maintaining the normal use of a single detachable component 107. In addition, the spring buffer structure 1061 can also play an auxiliary role in vibration reduction, greatly improving the impact resistance of the composite bearing 100. The two spring buffer structures 1061 are fixedly connected to the bearing outer sleeve 101. One end of the two spring buffer structures 1061 is fixedly connected to an assembly plate 1063. A roller body 1062 is provided above the assembly plate 1063. Through the rolling characteristics of the roller body 1062, the frictional resistance with the rolling ring 1051 and the notch 1055 can be reduced, facilitating the smooth movement of the rolling ring 1051. A locking port is provided on the assembly plate 1063. The same rolling component 105 is provided outside the two sets of buffer components 106. The rolling assembly 105 includes a rolling ring 1051 with an annular groove 1053. The annular groove 1053 is slidably connected to an annular bar 1054, allowing the rolling ring 1051 to slide smoothly between the annular bars 1054 via the annular groove 1053. The annular bars 1054 are fixedly connected to the bearing outer sleeve 101. The rolling ring 1051 has multiple recesses 1055, each with a trapezoidal structure. After the roller ring 1051 rolls, the side bevel of the notch 1055 can squeeze the roller body 1062 to move, thereby allowing the detachable component 107 to smoothly fit against the drive shaft 200, maintaining the normal use of the rubber seat 1071. Through the rolling of the roller ring 1051, the roller body 1062 can switch between rolling on the inner surfaces of the notch 1055 and the roller ring 1051. A fixed seat 1052 is fixedly connected to the roller ring 1051, and the fixed seat 1052 is slidably connected in the movable opening 104. The movable opening 104 provides movable space for the fixed seat 1052, facilitating the adjustment of the position of the fixed seat 1052. The movable opening 104 is opened on the bearing outer sleeve 101. The fixed seat 1052 is provided with a locking bolt that matches the size of the fixed opening 103. The locking bolt enters the fixed opening 103, thereby fixing the rolling ring 1051 and further ensuring the stability of the detachable component 107. There are two fixed openings 103 in each group. Each group of buffer components 106 is assembled and connected with a group of detachable components 107. The detachable component 107 includes a rubber seat 1071, which can buffer the impact force. The rubber seat 1071 is equipped with a mounting rail 1072. The assembly plate 1063 is set in a dovetail shape. The shape of the mounting rail 1072 matches the shape of the assembly plate 1063. Through the dovetail shape of the assembly plate 1063 and the mounting rail 1072, the mounting rail 1072 can be smoothly fitted and assembled with the assembly plate 1063 to prevent it from falling off. After the rolling assembly 105 rolls, when the fixed seat 1052 of the rolling assembly 105 is at the fixed opening 103 at the top and bottom respectively, the two sets of drive shafts 200 switch to fit the drive shaft 200. After switching, the alternating operation is performed. When the fixed seat 1052 moves to the middle set of fixed openings 103, both sets of detachable components 107 fit the drive shaft 200.

[0020] In this embodiment: by embedding a magnetic levitation component 102 in the bearing outer sleeve 101, the drive shaft 200 is suspended and supported by magnetic field force. During the start-up, stop or slow rotation of the drive shaft 200, a small gap can be maintained between the drive shaft 200 and the rubber seat 1071, reducing direct contact wear. At the same time, two sets of arrayed rubber seats 1071 are provided. The rolling component 105 can switch the usage state of the two sets of rubber seats 1071 to ensure continuous operation of the equipment. When the two sets are used synchronously, a cooperative impact-resistant structure can be formed to disperse the impact load and effectively improve the impact resistance.

[0021] Example 2: Refer to Figures 7-10 A magnetic composite water-lubricated rubber bearing with impact resistance includes a detachable component 107. The detachable component 107 includes a rubber seat 1071, on which an mounting rail 1072 is mounted. An assembly plate 1063 is designed in a dovetail shape. The mounting rail 1072 is adapted to the shape of the assembly plate 1063. One end of the mounting rail 1072 is fixedly connected to a limiting plate 1073 and a side stop 1074. The side stop 1074 limits the installation position of the mounting rail 1072, ensuring that the mounting rail 1072 and the assembly plate 1063 are completely assembled together. The limiting plate 1073 limits the movement of the operating ring 301, allowing the limiting plate 1073 to support the operating ring 301 and facilitate smooth rotation of the operating ring 301. The side stop 1074 has openings... A guide opening 1075 is provided, in which a slide rod 1078 is fixedly connected. A movable frame 1079 is slidably connected to the slide rod 1078. The movable frame 1079 can slide smoothly up and down through the slide rod 1078, so that the locking pin 1076 can be smoothly engaged in the locking slot. One end of the movable frame 1079 has a slot. A spring 1077 is fixedly connected between the lower part of the movable frame 1079 and the bottom wall of the guide opening 1075. The spring 1077 drives the movable frame 1079 to reset, so that the locking pin 1076 can be engaged in the locking slot, thereby limiting the installation rail 1072 and ensuring the stability of the rubber seat 1071. The other end of the movable frame 1079 is fixedly connected to the locking pin 1076, which is adapted to the size of the locking slot. The disassembly tool 300 includes an operating ring 301. Multiple arc-shaped protrusions 302 are provided around the circumference of the operating ring 301. The arc-shaped protrusions 302 can press the movable frame 1079 to move, causing the locking pin 1076 to disengage from the locking port, thereby removing the fixing of the mounting rail 1072 and facilitating subsequent disassembly operations. A locking rod 303 is provided on the arc-shaped protrusion 302. The locking rod 303 is adapted to the size of the locking slot. By locking the locking rod 303 into the locking slot, the disassembly tool 300 can be integrated with the detachable component 107, thereby stably removing a set of detachable components 107.

[0022] In this embodiment: by quickly connecting an unused set of detachable components 107 with the disassembly tool 300, the idle set of detachable components 107 can be quickly disassembled, which is convenient for replacement or maintenance operations, and there is no need to disassemble the equipment and cause shutdowns or production stoppages.

[0023] Example 3: Reference Figures 1-5 A magnetic composite water-lubricated rubber bearing with impact resistance includes a composite bearing 100 and a disassembly tool 300, wherein a drive shaft 200 is provided in the composite bearing 100. The composite bearing 100 includes a bearing outer sleeve 101, which has three sets of fixing ports 103. Inside the bearing outer sleeve 101, there is a magnetic levitation component 102 and two sets of buffer components 106. The two sets of buffer components 106 are surrounded by the same rolling component 105. Each set of buffer components 106 is assembled and connected with a set of detachable components 107. After the rolling assembly 105 rolls, when the fixed seat 1052 of the rolling assembly 105 is at the fixed opening 103 at the top and bottom respectively, the two sets of drive shafts 200 switch to fit the drive shaft 200. After switching, the alternating operation is performed. When the fixed seat 1052 moves to the middle set of fixed openings 103, both sets of detachable components 107 fit the drive shaft 200.

[0024] In this embodiment, the magnetic levitation component 102 provides a stable foundation for the switching and online maintenance of the two sets of detachable components 107. The drive shaft 200 runs smoothly in the suspended state, so that when the rolling component 105 and the buffer component 106 switch the detachable components 107, no additional friction damage will occur, ensuring that the switching process is safe and reliable. Moreover, the switchable design provides a prerequisite for rapid online maintenance. With the help of the disassembly tool 300, the maintenance of the idle rubber seat 1071 can be completed simultaneously during the normal operation of the equipment. At the same time, the rubber seat 1071 after online maintenance can be switched back into use at any time, ensuring that the two sets of rubber seats 1071 are always in good working condition, further enhancing the effect of magnetic composite levitation and dual-group synergistic impact resistance.

[0025] Working principle: When two sets of detachable components 107 are needed, the fixed base 1052 is moved, causing the fixed base 1052 to drive the roller ring 1051 to rotate. The roller ring 1051 drives the notch 1055 to squeeze the roller body 1062, causing the roller body 1062 to move. The roller body 1062 drives the assembly plate 1063 to move. The assembly plate 1063 causes the spring buffer structure 1061 to deform. At the same time, the assembly plate 1063 drives the mounting rail 1072 to move, so that the rubber seat 1071 can smoothly contact the drive shaft 200, allowing the two sets of rubber seats 107 to move. 1. After successfully carrying out the impact resistance operation and adjusting, fix the locking bolt on the middle fixing port 103. When switching is required, continue to rotate the fixing seat 1052 downward. When a set of buffer components 106 corresponds to the corresponding notch 1055, the spring buffer structure 1061 is reset, so that one set of detachable components 107 is disengaged from the drive shaft 200. Similarly, when the fixing seat 1052 moves to the upper fixing port 103 position, the other set of detachable components 107 is disengaged from the drive shaft 200, so that the two sets of detachable components 107 can be switched for use. When maintenance is required on a single rubber seat 1071, the operating ring 301 is smoothly placed over the limiting plate 1073 of the idle detachable component 107. At this time, rotating the operating ring 301 causes the arc-shaped protrusion 302 to press the movable frame 1079 to move. The movable frame 1079 causes the spring 1077 to deform. At the same time, the movable frame 1079 causes the locking pin 1076 to disengage from the locking port. Simultaneously, the locking rod 303 aligns with the locking port. At this time, applying a pulling force to the operating ring 301 causes the locking rod 303 to engage with the locking port. Applying a pulling force to the detachable component 107 causes the mounting rail 1072 to smoothly disengage from the assembly plate 1063, completing the disassembly of the rubber seat 1071. Then, maintenance or replacement work can be performed. During installation, a set of mounting rails 1072 and assembly plate 1063 are slidably assembled using disassembly tool 300. After assembly, a pushing force is applied to operating ring 301 to disengage the locking rod 303 from the slot. Then, the operating ring 301 is rotated to disengage the arc-shaped protrusion 302 from the movable frame 1079. At this time, spring 1077 drives the movable frame 1079 to reset, and the movable frame 1079 drives the locking pin 1076 into the locking port, thereby ensuring the stable use of the detachable component 107.

[0026] The above are merely preferred embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A magnetic composite water-lubricated rubber bearing with impact resistance, comprising a composite bearing (100) and a disassembly tool (300), characterized in that, The composite bearing (100) is provided with a drive shaft (200); The composite bearing (100) includes a bearing outer sleeve (101), which has three sets of fixing ports (103). Inside the bearing outer sleeve (101) are a magnetic levitation component (102) and two sets of buffer components (106). The two sets of buffer components (106) are surrounded by the same rolling component (105). Each set of buffer components (106) is assembled with a set of detachable components (107). After the rolling assembly (105) rolls, when the fixed seat (1052) of the rolling assembly (105) is in the fixed port (103) position at the top and bottom respectively, the two sets of drive shafts (200) switch to fit the drive shaft (200). After switching, the alternating operation is performed. When the fixed seat (1052) moves to the middle set of fixed ports (103) position, at this time both sets of detachable components (107) fit the drive shaft (200).

2. The magnetic composite water-lubricated rubber bearing with impact resistance according to claim 1, characterized in that, The magnetic levitation assembly (102) includes a magnetic module (1021) and a rubber sealing ring (1022). The magnetic module (1021) is installed inside the bearing outer sleeve (101), and the rubber sealing ring (1022) is installed on the bearing outer sleeve (101) and seals the magnetic module (1021).

3. The magnetic composite water-lubricated rubber bearing with impact resistance according to claim 1, characterized in that, Each set of buffer components (106) and detachable components (107) consists of five components. The buffer component (106) includes two spring buffer structures (1061), which are fixedly connected to the bearing outer sleeve (101). One end of each spring buffer structure (1061) is fixedly connected to an assembly plate (1063). A roller body (1062) is provided above the assembly plate (1063), and a locking opening is provided on the assembly plate (1063).

4. A magnetic composite water-lubricated rubber bearing with impact resistance according to claim 3, characterized in that, The detachable component (107) includes a rubber seat (1071) on which an mounting rail (1072) is mounted. The assembly plate (1063) is configured in a dovetail shape, and the mounting rail (1072) is adapted to the shape of the assembly plate (1063).

5. A magnetic composite water-lubricated rubber bearing with impact resistance according to claim 4, characterized in that, One end of the mounting rail (1072) is fixedly connected to a limiting plate (1073) and a side stop (1074). A guide opening (1075) is provided on the side stop (1074). A slide rod (1078) is fixedly connected in the guide opening (1075). A movable frame (1079) is slidably connected on the slide rod (1078). One end of the movable frame (1079) is provided with a latch. The other end of the movable frame (1079) is fixedly connected to a locking pin (1076). The locking pin (1076) is adapted to the size of the locking opening.

6. A magnetic composite water-lubricated rubber bearing with impact resistance according to claim 5, characterized in that, A spring (1077) is fixedly connected between the lower part of the movable frame (1079) and the bottom wall of the guide port (1075).

7. A magnetic composite water-lubricated rubber bearing with impact resistance according to claim 5, characterized in that, The disassembly tool (300) includes an operating ring (301), and a plurality of arc-shaped protrusions (302) are provided around the circumference of the operating ring (301). A locking rod (303) is provided on the arc-shaped protrusion (302), and the locking rod (303) is adapted to the size of the locking slot.

8. A magnetic composite water-lubricated rubber bearing with impact resistance according to claim 3, characterized in that, The rolling assembly (105) includes a rolling ring (1051), on which an annular groove (1053) is provided. The annular groove (1053) is slidably connected to an annular bar (1054), and the annular bar (1054) is fixedly connected in the bearing outer sleeve (101).

9. A magnetic composite water-lubricated rubber bearing with impact resistance according to claim 8, characterized in that, The roller ring (1051) has multiple notches (1055) with trapezoidal structure. By rolling the roller ring (1051), the roller body (1062) can switch between rolling on the inner surface of the notches (1055) and the roller ring (1051).

10. A magnetic composite water-lubricated rubber bearing with impact resistance according to claim 8, characterized in that, A fixed seat (1052) is fixedly connected to the rolling ring (1051). The fixed seat (1052) is slidably connected in the movable port (104). The movable port (104) is opened on the bearing outer sleeve (101). The fixed seat (1052) is provided with a locking bolt that matches the size of the fixed port (103). There are two fixed ports (103) in each group.

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