Stern shaft dismounting device

Abstract

The stern shaft dismounting equipment belongs to the technical field of mechanical installation. The stern shaft dismounting equipment comprises at least two longitudinal sliding rails, at least two trolley assemblies and at least two clamping assemblies. The longitudinal sliding rails are arranged in parallel and at intervals. The trolley assembly comprises a transverse sliding rail and at least two sliding seats. One end of each sliding seat is connected with the transverse sliding rail, and the sliding seats are arranged along the length direction of the transverse sliding rail in sequence. The number of the sliding seats is consistent with the number of the longitudinal sliding rails, and the other end of each sliding seat is movably connected with the corresponding longitudinal sliding rail. The number of the clamping assemblies is consistent with the number of the trolley assemblies, and each clamping assembly is movably connected with the transverse sliding rail of the corresponding trolley assembly. The stern shaft dismounting equipment can improve the safety and work efficiency of the stern shaft dismounting.

Description

Technical Field

[0001] This disclosure belongs to the field of mechanical installation technology, and specifically relates to a stern shaft disassembly and assembly device. Background Technology

[0002] The stern shaft is an important component of a ship's propulsion system, used to connect the propeller to the engine or gearbox.

[0003] In related technologies, the stern shaft is fitted into two bearings, one of which is the stern bearing and the other is the fore bearing. The stern shaft is typically disassembled and assembled using a hoisting method.

[0004] However, due to the length and weight of the stern shaft, its posture is difficult to control during hoisting, making the disassembly and assembly process complex and resulting in low safety and efficiency. Summary of the Invention

[0005] This disclosure provides a stern shaft disassembly and assembly device, which can improve the safety and operational efficiency of stern shaft disassembly and assembly. The technical solution is as follows:

[0006] This disclosure provides a stern shaft assembly / disassembly device, including at least two longitudinal slide rails, at least two trolley assemblies, and at least two clamping assemblies;

[0007] Each of the longitudinal sliding rails is arranged parallel to and spaced apart from the others;

[0008] The trolley assembly includes a transverse slide rail and at least two slide blocks. One end of each slide block is connected to the transverse slide rail, and each slide block is arranged sequentially along the length of the transverse slide rail. The number of slide blocks is the same as the number of longitudinal slide rails. The other end of each slide block is movably in contact with the corresponding longitudinal slide rail.

[0009] The number of clamping components is the same as the number of trolley components, and each clamping component is movably connected to the transverse slide rail of the corresponding trolley component.

[0010] In one implementation of this disclosure, the transverse slide rail has a sliding hole, the sliding hole is close to one end of the transverse slide rail, and the length direction of the sliding hole is consistent with the length direction of the transverse slide rail;

[0011] One end of the slide block is movably inserted into the slide hole.

[0012] In one implementation of this disclosure, the trolley assembly further includes a locking element;

[0013] The locking element passes through the sliding hole and is inserted into one end of the slide block to lock the slide block in the sliding hole.

[0014] In one implementation of this disclosure, the slide includes a railcar and a lifting mechanism;

[0015] The fixed end of the lifting mechanism is connected to the railcar, and the lifting end of the lifting mechanism is connected to the transverse slide rail.

[0016] The side of the railcar facing away from the lifting mechanism is movably in contact with the longitudinal sliding rail.

[0017] In one implementation of this disclosure, the railcar includes a seat, wheels, and brakes;

[0018] The wheels are rotatably connected to the seat;

[0019] The brake element is connected to the vehicle seat and is used to brake the wheels.

[0020] In one implementation of this disclosure, the clamping assembly includes a shaft seat, a drive mechanism, a first jaw, and a second jaw;

[0021] One side of the bearing seat has a groove;

[0022] The first jaw and the second jaw are respectively located on both sides of the bearing seat, the clamping ends of the first jaw and the second jaw are respectively located on both sides of the groove, the mating ends of the first jaw and the second jaw are respectively connected to the drive mechanism, and the portions between the two ends of the first jaw and the second jaw are respectively pivotally connected to the bearing seat.

[0023] The driving mechanism is used to drive the mating ends of the first jaw and the second jaw to swing.

[0024] In one implementation of this disclosure, the bearing seat has two receiving slots;

[0025] The two receiving slots are located on both sides of the groove, the first claw is located in one receiving slot, and the second claw is located in the other receiving slot.

[0026] In one implementation of this disclosure, the bearing seat has a through hole, and the two ends of the through hole correspond to the mating ends of the first claw and the second claw, respectively.

[0027] The driving mechanism includes a screw, a counterweight, a first elastic element, and a second elastic element. The screw is axially movable through the first jaw, the through hole, and the second jaw. The first end of the screw has an outer flange. The portion of the screw near the second end is threaded with the bearing seat. The counterweight is movably sleeved outside the screw and is movably located within the through hole. The first elastic element is located within the through hole and is compressed between the mating ends of the counterweight and the first jaw. The second elastic element is located within the through hole and is compressed between the mating ends of the counterweight and the second jaw.

[0028] In one implementation of this disclosure, the driving mechanism further includes a third elastic element and a fourth elastic element;

[0029] The third elastic element is compressed between the mating ends of the outer flange and the first claw;

[0030] The fourth elastic element is compressed between the inner wall of the bearing seat and the mating end of the second chuck.

[0031] In one implementation of this disclosure, the stiffness of the third elastic element and the fourth elastic element is less than the stiffness of the first elastic element and the second elastic element.

[0032] The beneficial effects of the technical solutions provided in this disclosure include at least the following:

[0033] The stern shaft assembly / disassembly device provided in this embodiment enables the assembly / disassembly of the stern shaft. During the assembly / disassembly process, the longitudinal slide rail is first placed on a flat, horizontal base. The positions of each clamping component on the transverse slide rail are adjusted, and the stern shaft is clamped and fixed by the clamping components. Next, the first clamping component is loosened, and the trolley assembly where the second clamping component is located is moved. That is, the slide moves the transverse slide rail along the length of the longitudinal slide rail, causing the second clamping component to move the stern shaft along the length of the longitudinal slide rail. Then, the first clamping component is locked, the second clamping component is loosened, and the trolley assembly where the first clamping component is located is moved. That is, the slide moves the transverse slide rail along the length of the longitudinal slide rail, causing the first clamping component to move the stern shaft along the length of the longitudinal slide rail. By repeatedly alternating the movement of the trolley assembly where the first clamping component is located and the trolley assembly where the second clamping component is located, the stern shaft can be moved, thereby enabling the stern shaft to be assembled and disassembled.

[0034] In the process of disassembling and assembling the stern shaft using the stern shaft disassembly and assembly equipment provided in this embodiment, there is no need to hoist the stern shaft, making it easy to adjust the posture of the stern shaft. This effectively simplifies the disassembly and assembly process, improving both operational safety and efficiency. Attached Figure Description

[0035] To more clearly illustrate the technical solutions in the embodiments of this disclosure, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0036] Figure 1 This is a top view of the stern shaft disassembly and assembly equipment provided in this embodiment of the disclosure;

[0037] Figure 2 This is a schematic diagram of the swing of the transverse slide rail provided in the embodiments of this disclosure;

[0038] Figure 3 This is a front view of the stern shaft disassembly and assembly device provided in the embodiments of this disclosure;

[0039] Figure 4 This is a cross-sectional view of the clamping assembly provided in an embodiment of this disclosure.

[0040] The symbols in the diagram represent the following meanings:

[0041] 10. Longitudinal sliding rail;

[0042] 20. Pulley assembly;

[0043] 210. Transverse slide rail; 211. Slide hole; 220. Slide seat; 221. Railcar; 222. Lifting mechanism; 223. Car seat; 224. Wheel; 225. Brake; 230. Locking component;

[0044] 30. Clamping components;

[0045] 310, Shaft seat; 311, Groove; 312, Receiving groove; 313, Through hole; 314, Threaded part; 320, Drive mechanism; 321, Screw; 322, Balance block; 323, First elastic element; 324, Second elastic element; 325, Outer flange; 326, Third elastic element; 327, Fourth elastic element; 330, First chuck; 340, Second chuck;

[0046] 100. Stern shaft. Detailed Implementation

[0047] To make the objectives, technical solutions, and advantages of this disclosure clearer, the embodiments of this disclosure will be described in further detail below with reference to the accompanying drawings.

[0048] This disclosure provides a stern shaft disassembly and assembly device. Figure 1 This is a top view of the stern shaft disassembly and assembly equipment. See [link / reference]. Figure 1 In this embodiment, the stern shaft assembly and disassembly device includes at least two longitudinal slide rails 10, at least two trolley assemblies 20 and at least two clamping assemblies 30.

[0049] Each longitudinal slide rail 10 is arranged parallel to each other at intervals. The trolley assembly 20 includes a transverse slide rail 210 and at least two slide blocks 220. One end of each slide block 220 is connected to the transverse slide rail 210, and each slide block 220 is arranged sequentially along the length direction of the transverse slide rail 210. The number of slide blocks 220 is the same as the number of longitudinal slide rails 10. The other end of each slide block 220 is movably in contact with the corresponding longitudinal slide rail 10. The number of clamping components 30 is the same as the number of trolley assemblies 20. Each clamping component 30 is movably connected to the transverse slide rail 210 of the corresponding trolley assembly 20.

[0050] It is worth noting that the longitudinal slide rail 10 has its length along the Y-axis, while the transverse slide rail 210 has its length along the X-axis. In actual use, the stern shaft assembly / disassembly equipment is placed on a flat, horizontal base, with both the Y-axis and X-axis parallel to the horizontal plane.

[0051] The stern shaft 100 can be disassembled and assembled using the stern shaft assembly / disassembly device provided in this embodiment. During the disassembly / disassembly of the stern shaft 100, the longitudinal slide rail 10 is first placed on a flat, horizontal base. The positions of each clamping assembly 30 on the transverse slide rail 210 are adjusted, and the stern shaft 100 is clamped and fixed by each clamping assembly 30. Next, the first clamping assembly 30 is loosened, and the trolley assembly 20 where the second clamping assembly 30 is located is moved. That is, the slide block 220 drives the transverse slide rail 210 to move along the length direction of the longitudinal slide rail 10, causing the second clamping assembly 30 to drive the stern shaft 100 to move along the length direction of the longitudinal slide rail 10. Then, the first clamping assembly 30 is locked, the second clamping assembly 30 is loosened, and the trolley assembly 20 where the first clamping assembly 30 is located is driven to move. That is, the slide block 220 drives the transverse slide rail 210 to move along the length direction of the longitudinal slide rail 10, so that the first clamping assembly 30 drives the stern shaft 100 to move along the length direction of the longitudinal slide rail 10. By repeatedly and alternately moving the trolley assembly 20 where the first clamping assembly 30 is located and the trolley assembly 20 where the second clamping assembly 30 is located, the movement of the stern shaft 100 can be realized, thereby realizing the assembly and disassembly of the stern shaft 100.

[0052] During the disassembly and assembly of the stern shaft 100 using the stern shaft disassembly and assembly equipment provided in this embodiment, there is no need to hoist the stern shaft 100, making it easy to adjust the posture of the stern shaft 100. This effectively simplifies the disassembly and assembly process of the stern shaft 100, thereby improving both operational safety and efficiency.

[0053] See also Figure 1 In this embodiment, the transverse slide rail 210 has a sliding hole 211. The sliding hole 211 is close to one end of the transverse slide rail 210. The length direction of the sliding hole 211 is consistent with the length direction of the transverse slide rail 210. One end of a slide block 220 is movably inserted into the sliding hole 211.

[0054] Figure 2 This is a schematic diagram of the swing of the transverse slide rail 210. Figure 2 perspective and Figure 1 Consistent, Figure 2 The diagram illustrates three different positions that the transverse slide rail 210 can be in after swinging. For example, in Figure 2 In the middle, the sliding hole 211 is close to the left end of the transverse slide rail 210. The slide block 220 close to the left end of the transverse slide rail 210 moves along the longitudinal slide rail 10, while the slide block 220 close to the right end of the transverse slide rail 210 remains stationary. This allows the left end of the transverse slide rail 210 to swing about the right end of the transverse slide rail 210 as an axis, thereby enabling the stern shaft 100 to be centered on the horizontal plane, making the disassembly and assembly of the stern shaft 100 more flexible.

[0055] Figure 3 This is a front view of the stern shaft disassembly and assembly equipment, combined with... Figure 3 In this embodiment, the trolley assembly 20 further includes a locking member 230. The locking member 230 passes through the sliding hole 211 and is inserted into one end of the slide block 220 to lock the slide block 220 within the sliding hole 211.

[0056] In the above implementation, the locking member 230 can fix the relative position between the slide block 220 and the transverse slide rail 210. When the transverse slide rail 210 is swung, the locking member 230 needs to be loosened so that the transverse slide rail 210 can swing relative to the slide block 220. After the transverse slide rail 210 has finished swinging, the locking member 230 is locked to fix the relative position between the transverse slide rail 210 and the slide block 220, thus preventing unnecessary movement.

[0057] In some examples, the locking element 230 is a bolt, one end of which passes through the sliding hole 211 and is inserted into one end of the slide block 220, with a threaded engagement between the bolt and the slide block 220. Tightening the bolt locks the locking element 230, and loosening the bolt loosens the locking element 230.

[0058] In other examples, the locking element 230 is a detachable snap-fit, etc., which is not limited in this disclosure.

[0059] See also Figure 3 In this embodiment, the slide 220 includes a railcar 221 and a lifting mechanism 222.

[0060] The fixed end of the lifting mechanism 222 is connected to the railcar 221, and the lifting end of the lifting mechanism 222 is connected to the transverse slide rail 210. The side of the railcar 221 facing away from the lifting mechanism 222 is in movable contact with the longitudinal slide rail 10.

[0061] In the above implementation, the railcar 221 can move along the length of the longitudinal slide rail 10, and the lifting mechanism 222 is connected to the railcar 221 and the transverse slide rail 210 respectively, so that the transverse slide rail 210 can move together with the railcar 221.

[0062] It is worth noting that the lifting mechanism 222 moves in the Z-axis direction. In actual use, the stern shaft disassembly and assembly equipment is placed on a flat, horizontal base, with the Z-axis direction perpendicular to the horizontal plane. The lifting mechanism 222 drives the transverse slide rail 210 to rise and fall, allowing the stern shaft 100 to be aligned in the direction perpendicular to the horizontal plane, making the disassembly and assembly of the stern shaft 100 more flexible.

[0063] For example, the lifting mechanism 222 is a hydraulic cylinder, with the cylinder body serving as the fixed end and the piston rod serving as the lifting end. The extension and retraction of the hydraulic cylinder enables the lifting and lowering of the transverse slide rail 210.

[0064] For example, the railcar 221 includes a seat 223, wheels 224 and brakes 225.

[0065] The wheel 224 is rotatably connected to the seat 223, and the brake 225 is connected to the seat 223. The brake 225 is used to brake the wheel 224.

[0066] In the above implementation, the seat 223 is the main body of the railcar 221 and mainly plays the role of load-bearing support. The wheels 224 are installed at the bottom of the seat 223 and are used to generate rolling contact with the longitudinal slide rail 10. The brake 225 is used to provide braking force, thereby realizing the braking of the railcar 221.

[0067] In some examples, brake 225 is a disc brake, in which case the brake caliper and the brake disc on wheel 224 cooperate to brake wheel 224.

[0068] In other examples, the brake element 225 may be a drum brake or a simpler pin and pin combination, which is not limited in this disclosure.

[0069] Figure 4 This is a cross-sectional view of the clamping assembly 30. Figure 4 perspective and Figure 3 Consistent perspective, combined Figure 4 In this embodiment, the clamping assembly 30 includes a bearing 310, a drive mechanism 320, a first jaw 330, and a second jaw 340.

[0070] One side of the bearing seat 310 has a groove 311. The first pawl 330 and the second pawl 340 are located on both sides of the bearing seat 310. The clamping ends of the first pawl 330 and the second pawl 340 are located on both sides of the groove 311. The mating ends of the first pawl 330 and the second pawl 340 are connected to the drive mechanism 320. The portion between the two ends of the first pawl 330 and the second pawl 340 is pivotally connected to the bearing seat 310. The drive mechanism 320 is used to drive the mating ends of the first pawl 330 and the second pawl 340 to swing.

[0071] In the above implementation, the groove 311 of the bearing seat 310 is used to accommodate the stern shaft 100. The clamping end and the mating end of the first jaw 330 are opposite ends in the length direction of the first jaw 330, and the clamping end and the mating end of the second jaw 340 are opposite ends in the length direction of the second jaw 340. The mating ends of the first jaw 330 and the second jaw 340 are respectively connected to the drive mechanism 320, so that the first jaw 330 and the second jaw 340 can rotate about their own pivot axis under the drive of the drive mechanism 320. During the rotation, if the clamping ends of the first jaw 330 and the second jaw 340 move towards each other, the stern shaft 100 located in the groove 311 can be clamped and fixed; if the clamping ends of the first jaw 330 and the second jaw 340 move away from each other, the stern shaft 100 is released.

[0072] For example, the first chuck 330 and the second chuck 340 are pivotally connected to the bearing 310 via pins.

[0073] For example, the clamping ends of the first jaw 330 and the second jaw 340 are both bent toward the groove 311. This design facilitates the clamping of the stern shaft 100 within the groove 311 by the first jaw 330 and the second jaw 340.

[0074] See also Figure 4 In this embodiment, the bearing seat 310 has two receiving grooves 312, which are located on both sides of the groove 311. The first claw 330 is located in one receiving groove 312, and the second claw 340 is located in the other receiving groove 312.

[0075] In the above implementation, the two receiving slots 312 are used to receive the first claw 330 and the second claw 340 respectively, so that the internal space of the bearing seat 310 can be used to receive the first claw 330 and the second claw 340, making the structure of the clamping assembly 30 more compact, which is conducive to the miniaturization design of the clamping assembly 30.

[0076] In this embodiment, the bearing seat 310 has a through hole 313, and the two ends of the through hole 313 correspond to the mating ends of the first pawl 330 and the second pawl 340, respectively.

[0077] The drive mechanism 320 includes a screw 321, a balance block 322, a first elastic element 323, and a second elastic element 324. The screw 321 is axially movable through the first jaw 330, the through hole 313, and the second jaw 340. The first end of the screw 321 has an outer flange 325. The portion of the screw 321 near the second end is threaded with the bearing seat 310. The balance block 322 is movably sleeved on the outside of the screw 321 and is movably located within the through hole 313. The first elastic element 323 is located within the through hole 313 and is compressed between the mating ends of the balance block 322 and the first jaw 330. The second elastic element 324 is located within the through hole 313 and is compressed between the mating ends of the balance block 322 and the second jaw 340.

[0078] In the above implementation, although the screw 321 passes through the first jaw 330, the through hole 313, and the second jaw 340, there is no assembly relationship between the screw 321 and the first jaw 330, the through hole 313, and the second jaw 340. The screw 321 can move freely within the first jaw 330, the through hole 313, and the second jaw 340. The outer flange 325 at the first end of the screw 321 is located on the side of the first jaw 330 facing away from the second jaw 340. The outer peripheral wall of the screw 321 near its second end has an external thread, which is located on the side of the second jaw 340 facing away from the first jaw 330 and is inserted into the threaded portion 314 of the bearing seat 310, so that there is a threaded engagement between the screw 321 and the bearing seat 310. The balance block 322 is located inside the through hole 313 and sleeved outside the screw 321. There is no assembly relationship between the balance block 322, the screw 321, and the through hole 313. The balance block 322 can move freely within the through hole 313.

[0079] The threaded portion 314 is part of the bearing seat 310 and is located on the side of the second jaw 340 opposite to the first jaw 330.

[0080] In its natural state, the mating ends of the first claw 330 and the second claw 340 are opened by the elastic force of the first elastic member 323 and the second elastic member 324, so that the clamping ends of the first claw 330 and the second claw 340 are closed to clamp the stern shaft 100 in the groove 311.

[0081] After screwing the screw 321 in the first direction, due to the threaded engagement between the screw 321 and the bearing 310, the screw 321 will move axially relative to the bearing 310. The outer flange 325 will then move toward the threaded portion 314. The outer flange 325 and the threaded portion 314 together press the mating ends of the first pawl 330 and the second pawl 340, causing the mating ends of the first pawl 330 and the second pawl 340 to gradually close. The clamping ends of the first pawl 330 and the second pawl 340 are gradually opened to prevent the stern shaft 100 in the groove 311 from loosening.

[0082] After screwing the screw 321 in the second direction, the screw 321 moves in the opposite direction to its own axial direction relative to the bearing 310. The outer flange 325 then moves away from the threaded portion 314. The mating ends of the first jaw 330 and the second jaw 340 are again opened by the elastic force of the first elastic element 323 and the second elastic element 324, causing the clamping ends of the first jaw 330 and the second jaw 340 to close again. The first direction and the second direction of screwing the screw 321 are two opposite directions.

[0083] During the compression or relaxation of the first elastic element 323 and the second elastic element 324, since the balance block 322 is located between the first elastic element 323 and the second elastic element 324, the movable balance block 322 can move adaptively according to the elastic force of the first elastic element 323 and the second elastic element 324, so that the first elastic element 323 and the second elastic element 324 can reach a dynamic balance state, thereby keeping the force applied by the first pawl 330 and the second pawl 340 to the stern shaft 100 relatively consistent, avoiding the stern shaft 100 from tilting due to excessive force deviation.

[0084] For example, the first elastic element 323 and the second elastic element 324 are helical springs, and both the first elastic element 323 and the second elastic element 324 are sleeved on the outside of the screw 321.

[0085] See also Figure 4 In this embodiment, the drive mechanism 320 further includes a third elastic element 326 and a fourth elastic element 327.

[0086] The third elastic element 326 is compressed between the mating ends of the outer flange 325 and the first chuck 330, and the fourth elastic element 327 is compressed between the inner wall of the bearing seat 310 and the mating ends of the second chuck 340.

[0087] The third elastic element 326 and the fourth elastic element 327 serve as a buffer. After the screw 321 is screwed in the first direction, the outer flange 325 moves toward the threaded portion 314 along with the screw 321, causing the third elastic element 326 and the fourth elastic element 327 to be compressed and the elastic force is transmitted to the mating ends of the first pawl 330 and the second pawl 340, so that the mating ends of the first pawl 330 and the second pawl 340 gradually close, and the clamping ends of the first pawl 330 and the second pawl 340 are gradually opened to prevent the stern shaft 100 in the groove 311 from loosening.

[0088] Compared to the outer flange 325 and threaded portion 314 acting directly on the first jaw 330 and the second jaw 340, the third elastic element 326 and the fourth elastic element 327 serve as intermediate force transmission media, which can effectively protect the first jaw 330 and the second jaw 340.

[0089] For example, the third elastic element 326 and the fourth elastic element 327 are helical springs, and both the third elastic element 326 and the fourth elastic element 327 are sleeved on the outside of the screw 321.

[0090] For example, the stiffness of the third elastic element 326 and the fourth elastic element 327 is less than the stiffness of the first elastic element 323 and the second elastic element 324.

[0091] This design ensures that the first elastic element 323 and the second elastic element 324 primarily function to open the mating ends of the first clamping jaw 330 and the second clamping jaw 340, while the third elastic element 326 and the fourth elastic element 327 primarily function as buffers. This design prevents the first clamping jaw 330 and the second clamping jaw 340 from being difficult to release due to excessive elasticity, while also preventing the first clamping jaw 330 and the second clamping jaw 340 from being insufficiently clamped due to insufficient elasticity.

[0092] Unless otherwise defined, the technical or scientific terms used herein shall have the ordinary meaning understood by one of ordinary skill in the art to which this disclosure pertains. The terms “first,” “second,” “third,” and similar terms used in this patent application specification and claims do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Similarly, the terms “an” or “a” and similar terms do not indicate a quantity limitation, but rather indicate the presence of at least one. The terms “comprising” or “including” and similar terms mean that the elements or objects preceding “comprising” or “including” encompass the elements or objects listed following “comprising” or “including” and their equivalents, and do not exclude other elements or objects. The terms “connected” or “linked” and similar terms are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. The terms “upper,” “lower,” “left,” “right,” etc., are used only to indicate relative positional relationships; when the absolute position of the described objects changes, the relative positional relationship may also change accordingly.

[0093] The above description is merely an optional embodiment of this disclosure and is not intended to limit this disclosure. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this disclosure should be included within the protection scope of this disclosure.

Claims

1. A stern shaft disassembly and assembly device, characterized in that, It includes at least two longitudinal sliding rails (10), at least two trolley assemblies (20) and at least two clamping assemblies (30); Each of the longitudinal sliding rails (10) is arranged parallel to each other at intervals; The trolley assembly (20) includes a transverse slide rail (210) and at least two slide blocks (220). One end of each slide block (220) is connected to the transverse slide rail (210), and each slide block (220) is arranged sequentially along the length direction of the transverse slide rail (210). The number of slide blocks (220) is the same as the number of longitudinal slide rails (10). The other end of each slide block (220) is movably in contact with the corresponding longitudinal slide rail (10). The transverse slide rail (210) has a sliding hole (211). The sliding hole (211) is close to one end of the transverse slide rail (210), and the length direction of the sliding hole (211) is consistent with the length direction of the transverse slide rail (210). One end of one slide block (220) is movably inserted into the sliding hole (211). The number of clamping assemblies (30) is the same as the number of trolley assemblies (20). Each clamping assembly (30) is movably connected to the transverse slide rail (210) of the corresponding trolley assembly (20). Each clamping assembly (30) includes a bearing seat (310), a drive mechanism (320), a first jaw (330), and a second jaw (340). One side of the bearing seat (310) has a groove (311). The first jaw (330) and the second jaw (340) are located on both sides of the bearing seat (310). The clamping ends of the first jaw (330) and the second jaw (340) are respectively located on both sides of the groove (311). The mating ends of the first jaw (330) and the second jaw (340) are respectively connected to the drive mechanism (320). The portions between the two ends of the first jaw (330) and the second jaw (340) are respectively pivotally connected to the bearing seat (310). The drive mechanism (320) is used to drive the mating ends of the first jaw (330) and the second jaw (340) to swing. The bearing seat (310) has a through hole (313). 13) The two ends correspond to the mating ends of the first jaw (330) and the second jaw (340) respectively. The drive mechanism (320) includes a screw (321), a balance block (322), a first elastic element (323) and a second elastic element (324). The screw (321) can move axially through the first jaw (330), the through hole (313) and the second jaw (340). The first end of the screw (321) has an outer flange (325). The part of the screw (321) near the second end is threaded with the bearing seat (310). The balance block (322) is movably sleeved outside the screw (321), and the balance block (322) is movably located inside the through hole (313). The first elastic element (323) is located inside the through hole (313), and the first elastic element (323) is compressed between the mating ends of the balance block (322) and the first claw (330). The second elastic element (324) is located inside the through hole (313), and the second elastic element (324) is compressed between the mating ends of the balance block (322) and the second claw (340).

2. The stern shaft disassembly and assembly equipment according to claim 1, characterized in that, The trolley assembly (20) also includes a locking element (230); The locking member (230) passes through the sliding hole (211) and is inserted into one end of the slide block (220) to lock the slide block (220) in the sliding hole (211).

3. The stern shaft disassembly and assembly equipment according to claim 1, characterized in that, The slide (220) includes a railcar (221) and a lifting mechanism (222); The fixed end of the lifting mechanism (222) is connected to the railcar (221), and the lifting end of the lifting mechanism (222) is connected to the transverse slide rail (210). The side of the railcar (221) facing away from the lifting mechanism (222) is movably in contact with the longitudinal slide rail (10).

4. The stern shaft disassembly and assembly equipment according to claim 3, characterized in that, The railcar (221) includes a seat (223), wheels (224) and brakes (225); The wheel (224) is rotatably connected to the seat (223); The brake (225) is connected to the seat (223) and is used to brake the wheel (224).

5. The stern shaft disassembly and assembly equipment according to claim 1, characterized in that, The bearing seat (310) has two receiving slots (312); The two receiving slots (312) are located on both sides of the groove (311), the first claw (330) is located in one of the receiving slots (312), and the second claw (340) is located in the other receiving slot (312).

6. The stern shaft disassembly and assembly device according to claim 1, characterized in that, The drive mechanism (320) further includes a third elastic element (326) and a fourth elastic element (327). The third elastic element (326) is compressed between the mating ends of the outer flange (325) and the first claw (330); The fourth elastic element (327) is compressed between the inner wall of the bearing seat (310) and the mating end of the second claw (340).

7. The stern shaft disassembly and assembly equipment according to claim 6, characterized in that, The stiffness of the third elastic element (326) and the fourth elastic element (327) is less than the stiffness of the first elastic element (323) and the second elastic element (324).

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