Underwater lifting platform stopping device

Abstract

The invention relates to the technical field of underwater lifting platforms, in particular to an underwater lifting platform stopping device. The stopping device comprises four sliding rails arranged at intervals and a lifting platform body, sliding shoes are arranged at the four corners of the lifting platform body, and the sliding shoes are used for being in sliding fit with the sliding rails; a winch is arranged on the inner side of the sliding rail and provided with a steel rope, a pulley is correspondingly arranged at the sliding shoe, the winch is matched with the pulley through the steel rope, a mounting face is formed on one side of the sliding rail, a matching strip is arranged on the mounting face, and a matching component is rotationally arranged at the bottom of the sliding shoe and used for being at least partially matched with the matching strip in an abutting mode when the underwater lifting platform stops. A driving mechanism is arranged on the side, away from the matching strip, of the sliding shoe and used for driving the matching component to rotate. According to the underwater lifting platform disclosed by the invention, the stable stopping of the underwater lifting platform in water is better realized in a manner that the matching component part at the sliding shoe is propped against the matching strip at the sliding rail, and the construction operation is convenient.

Description

Technical Field

[0001] The present invention relates to the technical field of underwater lifting platforms, in particular to a stopping device for underwater lifting platforms. Background Art

[0002] The underwater lifting platform is a special equipment widely used in rivers, lakes and oceans. It can achieve flexible lifting and lowering at different depths underwater. Since the operating environment of the underwater lifting platform is affected by external factors such as water flow, wind and waves, the underwater platform is relatively unstable when stopped in the water, posing a great safety hazard.

[0003] In the prior art, underwater lifting platforms generally use winch brakes for braking and suspension. Long-term braking will cause excessive wear of the brakes and cause significant loss to the winch wire rope. In addition, since the wire rope has a certain elasticity, the underwater lifting platform is prone to shaking up and down during underwater operations, causing difficulties in operation. Summary of the invention

[0004] The invention provides an underwater lifting platform stopping device, which can overcome certain defects of the prior art.

[0005] According to the underwater lifting platform stopping device of the present invention, it includes four slide rails arranged at intervals, and a lifting platform body, wherein slide shoes are arranged at the four corners of the lifting platform body, and the slide shoes are used to slide with the slide rails; a winch is arranged on the inner side of the slide rail, and the winch has a steel rope, and a pulley is arranged correspondingly at the slide shoe, and the winch and the pulley are matched through the steel rope; a mounting surface is formed on one side of the slide rail, and a matching strip is arranged on the mounting surface, and a matching component is rotatably arranged at the bottom of the slide shoe, and the matching component is used to abut and match with the matching strip at least in part when the underwater lifting platform stops; a driving mechanism is arranged on the side of the slide shoe away from the matching strip, and the driving mechanism is used to drive the matching component to rotate.

[0006] Preferably, the mating component includes a strip-shaped component body and a mounting portion formed at one end of the component body, a first rotating hole is formed through the mounting portion, a mounting seat is provided at the bottom of the sliding shoe, and two mating plates are formed at intervals on the side of the mounting seat away from the sliding shoe, the two mating plates are abutted against the mounting portion, and a second rotating hole is formed through the two mating plates, and the driving mechanism includes a rotating shaft rotatably arranged at the second rotating hole, a first keyway is formed at the rotating shaft, a first flat key is provided at the first keyway, and a second keyway is formed corresponding to the first rotating hole, and the second keyway is used for slidingly engaging with the first flat key.

[0007] Preferably, a mating portion is formed at one end of the component body away from the mounting portion, and at least one abutment groove is formed at the mating strip. When the underwater lifting platform stops, the mating portion rotates to the abutment groove and abuts against the abutment groove. The thickness of the mating portion gradually decreases along the direction away from the mounting portion. A first mating surface is formed at the end of the mating portion, and a second mating surface is formed correspondingly at the abutment groove. The second mating surface is used to abut against the first mating surface. The first mating surface and the second mating surface are arc surfaces with the same radius. The abutment groove also includes a third mating surface formed on one side of the first mating surface. The third mating surface is used to conformally fit with the mating portion.

[0008] Preferably, a shaft sleeve is provided at the second rotating hole, and the shaft sleeve is sleeved on the outer wall of the rotating shaft.

[0009] Preferably, a shoulder is formed on the rotating shaft on one side of the first keyway, and the shoulder is used to abut and cooperate with the mating plate and the mounting portion. A distance ring is provided on the side of the mounting portion away from the shoulder, and the distance ring is sleeved on the outer wall of the sleeve; a first clamping groove is formed at one end of the rotating shaft located on the side of the distance ring away from the sleeve, and a first clamping ring is provided at the first clamping groove, and the first clamping ring is used to abut and cooperate with the mating plate.

[0010] Preferably, the driving mechanism also includes a transmission rod arranged at the end of the rotating shaft away from the clamping ring, and a third rotating hole is formed through one side of the transmission rod, and the third rotating hole is used to cooperate with the rotating shaft; a third keyway is formed on the side of the rotating shaft shoulder away from the clamping ring, and a second flat key is provided at the third keyway, and a fourth keyway is formed corresponding to the third rotating hole, and the fourth keyway is used to abut and cooperate with the second flat key.

[0011] Preferably, a limit plate is provided at one end of the rotating shaft near the third keyway, the limit plate is used to abut against the transmission rod, and at least one threaded fastener is provided at the limit plate, the threaded fastener is used to pass through the limit plate and engage with the rotating shaft thread.

[0012] Preferably, the driving mechanism also includes an electric push cylinder arranged on the side of the sliding shoe away from the mating strip, the electric push cylinder and the sliding shoe are rotatably matched, the electric push cylinder has a telescopic rod which can be telescoped along its axial direction, a first plug-in portion is formed at the end of the telescopic rod, and a first plug-in groove is correspondingly formed at the transmission rod, and the first plug-in groove is used to abut and cooperate with both sides of the first plug-in portion; a fourth rotating hole is formed at the first plug-in portion, and a fifth rotating hole is correspondingly formed at the first plug-in groove, and a first ear shaft is provided at the fifth rotating hole, and the first ear shaft is used to rotatably cooperate with the fourth rotating hole and the fifth rotating hole.

[0013] Preferably, a first limit end is formed on one side of the first ear shaft, and the first limit end is used to abut against one side of the transmission rod. A second groove is formed on the side of the first ear shaft away from the first limit end. A second clamping ring is detachably provided at the second groove, and the second clamping ring is used to cooperate with the side of the transmission rod away from the first limit end.

[0014] Preferably, a fixed bracket is provided on the side of the sliding shoe away from the matching strip, and the fixed bracket includes a fixed plate for fixedly matching with the sliding shoe, and a bracket body is vertically provided at the fixed plate, and the bracket body extends in a direction away from the matching strip; a lifting ear is formed on the side of the bracket body close to the electric push cylinder, and a second plug-in portion is formed on the end of the electric push cylinder away from the telescopic rod, and a second plug-in groove is formed correspondingly at the lifting ear, and the second plug-in groove is used to abut and match with both sides of the second plug-in portion; a sixth rotating hole is formed at the second plug-in portion, and a seventh rotating hole is formed correspondingly at the second plug-in groove, and a second ear shaft is provided at the seventh rotating hole, and the second ear shaft is used to rotate and match with the sixth rotating hole and the seventh rotating hole.

[0015] Preferably, a second limit end is formed on one side of the second ear shaft, and the second limit end is used to abut against one side of the lifting ear. A third slot is formed on the side of the second ear shaft away from the second limit end. A third clamping ring is detachably provided at the third slot, and the third clamping ring is used to cooperate with the side of the lifting ear away from the second limit end. Beneficial Effects

[0016] The installation of the matching components, driving mechanism and matching plate in the present application preferably utilizes the space between the slide rail and the slide shoe for arrangement, which not only saves installation space but also improves performance and safety during use.

[0017] Compared with the method of braking and stopping by using a winch brake, the stopping method in the present application can make the winch not be subjected to force when it stops on the underwater platform by abutting the matching component part at the sliding shoe against the matching strip provided at the sliding rail, thereby better extending the service life and maintenance cycle of the winch. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the installation of the underwater lifting platform stop device; Figure 2 This is a working diagram of the underwater lifting platform stopping device; Figure 3 for Figure 2 A partial enlarged schematic diagram in the middle; Figure 4 for Figure 3 Middle BB cutaway diagram; Figure 5 It is a schematic diagram of the main view of the matching component; Figure 6 This is a schematic diagram of the axonometric installation of the drive mechanism. DETAILED DESCRIPTION

[0019] In order to further understand the content of the present invention, the present invention is described in detail in conjunction with the embodiments. It should be understood that the embodiments are only for explaining the present invention and are not intended to limit it. Example 1

[0020] See Figure 1-6This embodiment provides a stopping device for an underwater lifting platform. Figure 1-2 The device includes four slide rails 101 arranged at intervals, and a lifting platform body 102. Slide shoes 1021 are provided at the four corners of the lifting platform body 102, and the slide shoes 1021 are used to slide with the slide rails 101; a winch 103 is provided on the inner side of the slide rail 101, and the winch 103 has a steel rope. A pulley 104 is correspondingly provided at the slide shoe 1021, and the winch 103 and the pulley 104 are matched through the steel rope.

[0021] When the above structure is in use, the slide rail 101 is connected to the steel structure of the water platform by welding or fasteners, and is extended and laid underwater. The setting of the slide rail 101 and the slide shoe 1021 can limit the range of movement of the four corners of the lifting platform, so that the lifting platform can be more stable when descending.

[0022] Furthermore, a winch 103 is arranged at the slide rail 101 above the water surface. The winch 103 retracts and releases the steel rope in cooperation with the movable pulley 104 arranged at the slide shoe 1021, so as to realize the movement of the underwater lifting platform in different water layers in the water, thereby facilitating the transportation of equipment or construction personnel to different water depths for operation. By using the water platform, the construction personnel can better and more smoothly rise and fall in the water, and can load more tools at the same time.

[0023] Among them, a mounting surface 1011 is formed on one side of the slide rail 101, and a matching strip 105 is provided on the mounting surface 1011. A matching component 210 is rotatably provided at the bottom of the slide shoe 1021. The matching component 210 is used to abut against the matching strip 105 at least in part when the underwater lifting platform stops; a driving mechanism is provided on the side of the slide shoe 1021 away from the matching strip 105, and the driving mechanism is used to drive the matching component 210 to rotate.

[0024] According to the solution provided in this embodiment, when the underwater lifting platform moves to a certain water depth and needs to stop operating, the brake of the winch 103 starts braking. When the underwater lifting platform hovers in the water, the driving mechanism starts to drive the matching component 210 to rotate, so that a part of the matching component 210 abuts against the matching strip 105, so that the sliding shoe 1021 is supported at the slide rail 101. Since the underwater platform has four sliding shoes 1021, the underwater platform and the slide rail 101 have four supporting points, which can better provide support to ensure the stability of the underwater platform.

[0025] When the mating component 210 abuts against the mating strip 105, the brake at the winch 103 gradually reduces the braking force to facilitate the mating component 210 to abut against the mating strip 105 smoothly. After the mating component 210 and the mating strip 105 are mated, the winch 103 gradually reduces the braking force to 0, that is, the underwater platform can stop in the water without the winch 103 being subjected to force, thereby facilitating the operation.

[0026] Compared with the method of braking and stopping by the brake of the winch 103, the stopping method in the present application can make the winch 103 and the steel rope not be subjected to force when the underwater platform stops by abutting against the matching strip 105 provided on the slide rail 101 through the matching component 210 part at the sliding shoe 1021, thereby avoiding the wear of the winch 103 and the steel rope and the shaking of the underwater platform, thereby better extending the service life and maintenance cycle of the winch 103.

[0027] Furthermore, if braking is performed by the winch 103, there is a certain gap between the slide rail 101 and the slide shoe 1021. Due to the impact of the water flow in the water, the underwater platform shakes, and there will be collisions between the slide shoe 1021 and the slide rail 101. After multiple collisions, fatigue deformation or even fatigue failure is likely to occur at the slide rail 101 or the slide shoe 1021, which poses a huge safety hazard to the construction. In the present application, a matching component 210 is provided at the bottom of the slide shoe 1021, which can rotate and abut against the matching strip 105 at the side wall of the slide rail 101. When the lifting platform needs to stop, it abuts against the four slide rails 101 to limit the four degrees of freedom of the underwater platform on the horizontal plane. Since the density of the underwater platform is greater than that of water, the abutment and cooperation between the matching component 210 and the matching strip 105 can be more stable, so that the underwater platform can resist the impact of the water flow and maintain a stable state when it stops, so that the underwater platform can transport goods or carry construction personnel more stably, which is convenient for construction personnel to work at various water depths.

[0028] It can be understood that the matching component 210 is arranged at the bottom of the sliding shoe 1021. If the matching component 210 is arranged on the side wall of the sliding shoe 1021 close to the matching strip 105, the matching component 210 is easy to be mismatched with the matching strip 105 during the lifting process of the lifting platform, thereby causing the sliding shoe 1021 to twist. At this time, the matching between the sliding shoe 1021 and the slide rail 101 is stuck. The matching component 210 is arranged at the bottom of the sliding shoe 1021. Since there is no component on the side wall of the sliding shoe 1021 close to the matching strip 105, the matching component 210 cannot contact the matching strip 105 during the lifting process of the lifting platform. Therefore, the above-mentioned situation causing the sliding shoe 1021 and the slide rail 101 to be stuck will not occur.

[0029] Furthermore, by arranging the driving mechanism on the side of the sliding shoe 1021 away from the matching strip 105 , the driving mechanism can be kept away from the bottom of the sliding shoe 1021 or the part close to the matching strip 105 that is easily squeezed, thereby better protecting the driving mechanism.

[0030] In summary, the installation of the mating component 210, the driving mechanism and the mating plate 371 in the present application preferably utilizes the space between the slide rail 101 and the slide shoe 1021 for arrangement, which not only saves installation space but also improves performance and safety during use.

[0031] See Figure 1-5 The mating component 210 includes a strip-shaped component body 511 and a mounting portion 512 formed at one end of the component body 511, a first rotating hole 5121 is formed through the mounting portion 512, a mounting seat 220 is provided at the bottom of the sliding shoe 1021, the mounting seat 220 is fixedly matched with the sliding shoe 1021 by bolts, and two mating plates 371 are formed at intervals on the side of the mounting seat 220 away from the sliding shoe 1021, the two mating plates 371 are abutted against the mounting portion 512, and a second rotating hole 422 is formed through the two mating plates 371, and the driving mechanism includes a rotating shaft 430 rotatably arranged at the second rotating hole 422, a first keyway 431 is formed at the rotating shaft 430, a first flat key is provided at the first keyway 431, and a second keyway is formed correspondingly at the first rotating hole 5121, and the second keyway is used to slide with the first flat key.

[0032] Specifically, the rotating shaft 430 cooperates with the mating component 210 through the first flat key, and the mating component 210 is driven to rotate by the rotation of the rotating shaft 430. The flat key has a simple structure, which helps to reduce the probability of failure in an underwater environment. It is easy to manufacture and install, and the installation and disassembly of the flat key is relatively simple, which is convenient for maintenance and replacement in an underwater environment. At the same time, compared with transmission through gears or splines, the flat key transmission has less wear, which is conducive to rust-proofing the flat key and the rotating shaft 430 to prevent the rotating shaft 430 and the driving component from rusting.

[0033] See Figure 3 and 5 A mating portion 513 is formed at one end of the component body 511 away from the mounting portion 512, and at least one abutting groove 3051 is formed at the mating strip 105. When the underwater lifting platform stops, the mating portion 513 rotates to the abutting groove 3051 and abuts against the abutting groove 3051. The thickness of the mating portion 513 gradually decreases along the direction away from the mounting portion 512. A first mating surface 5131 is formed at the end of the mating portion 513, and a second mating surface 3052 is correspondingly formed at the abutting groove 3051. The second mating surface 3052 is used to abut against the first mating surface 5131. The first mating surface 5131 and the second mating surface 3052 are arc surfaces with the same radius. The abutting groove 3051 also includes a third mating surface 3053 formed on one side of the first mating surface 5131, and the third mating surface 3053 is used to conformally fit with the mating portion 513.

[0034] Specifically, the first mating surface 5131 and the second mating surface 3052 are set as arc surfaces to facilitate the positioning of the mating component 210 when it cooperates with the abutment groove 3051, and also to facilitate the retracting of the mating component 210 when the lifting platform needs to move. The third mating surface 3053 can be conformally matched with the mating portion 513, so that the mating component 210 can extend into the abutment groove 3051 and fit tightly with the abutment groove 3051, thereby preventing the mating component 210 from being deformed or broken when subjected to the pressure of the lifting platform.

[0035] Furthermore, a plurality of matching grooves may be provided and spaced apart along the length direction of the matching strip 105, so that the lifting platform can stop operating at different water depths.

[0036] The matching strip 105 is connected to the side wall of the slide rail 101 by bolts, so the matching strip 105 can be multi-sectioned, which is convenient for manufacturing and installation. Therefore, the construction party can arrange the matching strip 105 at different depths as needed, thereby better realizing the rational use of resources.

[0037] See Figure 3-5 The rotating shaft 430 is located on one side of the first keyway 431 to form a shoulder 432, and the shoulder 432 is used to abut and cooperate with the matching plate 371 and the mounting portion 512. A distance ring 433 is provided on the side of the mounting portion 512 away from the shoulder 432, and the distance ring 433 is sleeved on the outer wall of the sleeve 440; a first clamping groove is formed at one end of the rotating shaft 430 located on the side of the distance ring 433 away from the sleeve 440, and a first clamping ring 434 is provided at the first clamping groove, and the first clamping ring 434 is used to abut and cooperate with the matching plate 371.

[0038] Among them, the shoulder 432 can facilitate the positioning of the rotating shaft 430 during installation, the shoulder 432 and the distance ring 433 can reduce the friction between the mating component 210 and the mating plate 371, thereby reducing the rotation resistance of the mating component 210, and the first clamping ring 434 can limit the axial freedom of the rotating shaft 430.

[0039] It is understandable that the matching plate 371 and the mounting seat 220 are detachably connected, so the installation of the rotating shaft 430 can be achieved more conveniently.

[0040] Furthermore, the driving mechanism also includes a transmission rod 350 arranged at the end of the rotating shaft 430 away from the clamping ring, and a third rotating hole 451 is formed through one side of the transmission rod 350, and the third rotating hole 451 is used to cooperate with the rotating shaft 430; the rotating shaft 430 is located on the side of the shoulder 432 away from the clamping ring to form a third key groove 435, and a second flat key is provided at the third key groove 435, and a fourth key groove is formed corresponding to the third rotating hole 451, and the fourth key groove is used to abut and cooperate with the second flat key.

[0041] Specifically, the second flat key realizes the transmission between the transmission rod 350 and the driving shaft. By providing the transmission rod 350, when the transmission rod 350 rotates, the rotation of the driving component can be preferably realized.

[0042] It is understandable that, compared with the bracket rotating by pushing the mating component 210, by providing the transmission rod 350, the thrust can be reduced to a better extent, thereby facilitating lowering the driving force requirements of the driving mechanism and better reducing the use cost.

[0043] See Figure 3-4 A limit plate 436 is provided at one end of the rotating shaft 430 near the third key slot 435 , and the limit plate 436 is used to abut against the transmission rod 350 . At least one threaded fastener 437 is provided at the limit plate 436 , and the threaded fastener 437 is used to pass through the limit plate 436 and threadably cooperate with the rotating shaft 430 .

[0044] Specifically, the limiting piece 436 can limit the axial movement of the transmission rod 350 along the third rotating hole 451 , thereby better achieving the installation of the transmission rod 350 .

[0045] See Figure 1-4 The driving mechanism also includes an electric push cylinder 360 arranged on the side of the sliding shoe 1021 away from the matching strip 105. The electric push cylinder 360 is rotatably matched with the sliding shoe 1021. The electric push cylinder 360 has a telescopic rod 361 that can be telescoped along its axial direction. A first plug-in portion 4611 is formed at the end of the telescopic rod 361, and a first plug-in groove 452 is correspondingly formed at the transmission rod 350. The first plug-in groove 452 is used to abut and cooperate with both sides of the first plug-in portion 4611; a fourth rotating hole 4612 is formed at the first plug-in portion 4611, and a fifth rotating hole 453 is correspondingly formed at the first plug-in groove 452. A first ear shaft 480 is provided at the fifth rotating hole 453, and the first ear shaft 480 is used to rotate and cooperate with the fourth rotating hole 4612 and the fifth rotating hole 453.

[0046] Specifically, the electric push cylinder 360 realizes the rotation of the rotating rod by driving the telescopic rod 361 to extend and retract, thereby realizing the rotation of the driving component. When the telescopic rod 361 extends out of the electric push cylinder 360, the mating component 210 rotates toward the mating strip 105, thereby better realizing the abutment and cooperation between the mating component 210 and the abutment groove 3051. When the telescopic rod 361 retracts into the electric push cylinder 360, the mating component 210 rotates away from the mating strip 105, thereby realizing the separation of the mating component 210 and the abutment groove 3051.

[0047] It is understandable that if the electric push cylinder 360 is set at the bottom of the sliding shoe 1021, firstly, it will directly lead to a larger axial dimension of the driving mechanism, which is not conducive to the arrangement of the slide rail 101; secondly, it will cause the electric push cylinder 360 to require a larger driving force to drive the matching component 210 to rotate. The electric push cylinder 360 with a smaller driving force is difficult to meet the requirements. If it is replaced with a hydraulic cylinder, it needs to be connected to the pipeline when used underwater. When oil leakage occurs when it is under a large load, it will cause pollution to the water body. Therefore, the use of the cylinder causes inconvenience for construction and maintenance.

[0048] Therefore, by adopting the above-mentioned arrangement of the electric push cylinder 360, not only the space of the slide rail 101 is utilized to a greater extent, but also construction and maintenance can be facilitated. Since the electric push cylinder 360 is purely electrically driven, when used underwater, only the structural sealing and the watertightness of the cable need to be considered. The movement of the telescopic rod 361 can be controlled by electrical signals, and the operation is relatively convenient.

[0049] It is understandable that a sliding bearing is provided at the telescopic rod 361 of the electric push cylinder 360. The sliding bearing is made of polyformaldehyde. When used underwater, the use of sliding bearings made of polyformaldehyde can better avoid the situation where traditional copper lubricated bearings need to be lubricated and may cause water pollution.

[0050] See Figure 3-4 A first limiting end 481 is formed on one side of the first ear shaft 480, and the first limiting end 481 is used to abut against one side of the transmission rod 350. A second clamping groove is formed on the side of the first ear shaft 480 away from the first limiting end 481. A second clamping ring 482 is detachably provided at the second clamping groove, and the second clamping ring 482 is used to cooperate with the side of the transmission rod 350 away from the first limiting end 481.

[0051] Specifically, the first ear shaft 480 is used to achieve the rotational cooperation between the transmission rod 350 and the telescopic rod 361 , and the second clamping ring 482 can better limit the axial movement of the transmission rod 350 and the telescopic rod 361 along the fourth rotation hole 4612 .

[0052] See Figure 1-4A fixed bracket 370 is provided on the side of the sliding shoe 1021 away from the matching strip 105, and the fixed bracket 370 includes a fixed plate 421 for fixedly matching with the sliding shoe 1021, and a bracket body 372 is vertically provided at the fixing plate 421, and the bracket body 372 extends in a direction away from the matching strip 105; a lifting ear 373 is formed on the side of the bracket body 372 close to the electric push cylinder 360, and a second plug-in portion 4613 is formed at the end of the electric push cylinder 360 away from the telescopic rod 361, and a second plug-in groove 4731 is correspondingly formed at the lifting ear 373, and the second plug-in groove 4731 is used to abut and match with both sides of the second plug-in portion 4613; a sixth rotating hole 4614 is formed at the second plug-in portion 4613, and a seventh rotating hole 4732 is correspondingly formed at the second plug-in groove 4731, and a second ear shaft 490 is provided at the seventh rotating hole 4732, and the second ear shaft 490 is used to rotate and match with the sixth rotating hole 4614 and the seventh rotating hole 4732.

[0053] Specifically, the fixed bracket 370 can realize the rotation of the electric push cylinder 360. Since the transmission rod 350 needs to rotate during use, the electric push cylinder 360 also needs to rotate. The rotation range of the electric push cylinder 360 is relatively small. By setting a bracket body 372 extending away from the matching strip 105, it is possible to better avoid the electric push cylinder 360 from contacting the side wall of the slide rail 101 during use, thereby reducing the risk of damage to the electric push cylinder 360.

[0054] See Figure 3-4 A second limiting end 491 is formed on one side of the second ear shaft 490, and the second limiting end 491 is used to abut against one side of the lifting ear 373. A third clamping groove is formed on the side of the second ear shaft 490 away from the second limiting end 491. A third clamping ring 492 is detachably provided at the third clamping groove, and the third clamping ring 492 is used to cooperate with the side of the lifting ear 373 away from the second limiting end 491.

[0055] Specifically, the first ear shaft 480 is used to achieve the rotational cooperation between the lifting ear 373 and the electric push cylinder 360 , and the second clamping ring 482 can better limit the axial movement of the lifting ear 373 and the electric push cylinder 360 along the sixth rotating hole 4614 . Example 2

[0056] See Figure 4 This embodiment provides an underwater lifting platform stopping device, which is different from the underwater lifting platform stopping device in Example 1 in that a shaft sleeve 440 is provided at the second rotating hole 422, and the shaft sleeve 440 is sleeved on the outer wall of the rotating shaft 430.

[0057] By providing the sleeve 440 at the rotating pair, direct contact between the rotating shaft 430 and the mounting seat 220 can be avoided, thereby reducing the friction coefficient, increasing the smoothness of movement, and extending the service life of the rotating shaft 430. In addition, by providing the sleeve 440, the probability of corrosion can be effectively reduced and the structure of the rotating pair can be protected.

[0058] Furthermore, by providing the shaft sleeve 440, a buffering effect can be played during the rotation process, reducing the impact and vibration on the equipment, and the shaft sleeve 440 can evenly distribute the load, improve the bearing capacity of the rotating pair, and preferably improve the overall strength and stability of the structure. Example 3

[0059] This embodiment provides a method for stopping an underwater lifting platform, which is implemented using the underwater lifting platform stopping device in Embodiment 1 or 2. The stopping method comprises the following steps: Step S1: The winch 103 is braked to make the lifting platform hover in the water; Step S2: the telescopic rod 361 of the electric push cylinder 360 extends, driving the transmission rod 350 to rotate, so that the matching component 210 rotates toward the matching bar 105, and at the same time the winch 103 starts to reduce the braking force; Step S3: When the mating member 210 is fully mated with the abutting groove 3051 at the mating strip 105, the braking force of the winch 103 is gradually reduced to 0.

[0060] Furthermore, when the lifting platform needs to be lifted again, the following steps are performed: Step S1: The winch 103 applies force to the lifting pulley 104 to lift the lifting platform upward, and the electric push cylinder 360 retracts the telescopic rod 361 at the same time; Step S2: When the matching component 210 is separated from the abutting groove 3051 , the winch 103 is braked for 10-15 seconds, and the electric push cylinder 360 continues to retract the telescopic rod 361 to retract the matching component 210 under the sliding shoe 1021 .

[0061] Through the above method, the underwater lifting platform can be better able to stop operation and restart lifting in the water, which is more convenient for construction workers to board, transport equipment and perform underwater operations.

[0062] It is easy to understand that those skilled in the art can combine, split, reorganize, etc. the embodiments of the present application to obtain other embodiments based on one or several embodiments provided in the present application, and these embodiments do not exceed the protection scope of the present application.

[0063] The present invention and its implementation methods are described schematically above, and the description is not restrictive. The embodiments shown in the embodiments are only part of the implementation methods of the present invention, and the actual structure is not limited thereto. Therefore, if a person skilled in the art is inspired by the embodiments and designs a structure and an implementation method similar to the technical solution without creativity without departing from the purpose of the invention, they should all fall within the protection scope of the present invention.

Claims

1. An underwater lifting platform stopping device, comprising four slide rails (101) arranged at intervals, and a lifting platform body (102), wherein four corners of the lifting platform body (102) are provided with slide shoes (1021), and the slide shoes (1021) are used to slide with the slide rails (101); a winch (103) is provided on the inner side of the slide rail (101), and the winch (103) has a steel rope, and a pulley (104) is correspondingly provided at the slide shoe (1021), and the winch (103) and the pulley (104) are matched through the steel rope, characterized in that: A mounting surface (1011) is formed on one side of the slide rail (101), a matching strip (105) is provided on the mounting surface (1011), a matching component (210) is rotatably provided on the bottom of the slide shoe (1021), and the matching component (210) is used for at least a portion of the matching component (210) to abut against and match with the matching strip (105) when the underwater lifting platform stops; a driving mechanism is provided on a side of the slide shoe (1021) away from the matching strip (105), and the driving mechanism is used for driving the matching component (210) to rotate.

2. The underwater lifting platform stopping device according to claim 1, characterized in that: The mating component (210) comprises a strip-shaped component body (511), and a mounting portion (512) formed at one end of the component body (511); a first rotation hole (5121) is formed through the mounting portion (512); a mounting seat (220) is provided at the bottom of the sliding shoe (1021); two mating plates (371) are formed at intervals on a side of the mounting seat (220) away from the sliding shoe (1021); the two mating plates (371) are abutted against and mated with the mounting portion (512); a second rotation hole (422) is formed through the two mating plates (371); the driving mechanism comprises a rotating shaft (430) rotatably arranged at the second rotation hole (422); a first keyway (431) is formed at the rotating shaft (430); a first flat key is provided at the first keyway (431); a second keyway is formed correspondingly at the first rotation hole (5121); the second keyway is used for slidingly mating with the first flat key.

3. The underwater lifting platform stopping device according to claim 2, characterized in that: A matching portion (513) is formed at one end of the component body (511) away from the mounting portion (512), and at least one abutting groove (3051) is formed at the matching strip (105). When the underwater lifting platform stops, the matching portion (513) rotates to the abutting groove (3051) to abut against the abutting groove (3051), and the thickness of the matching portion (513) gradually decreases in a direction away from the mounting portion (512). A first matching surface (5131) is formed at the end of the matching portion (513). A second mating surface (3052) is formed corresponding to the abutment groove (3051), and the second mating surface (3052) is used for abutting and mating with the first mating surface (5131). The first mating surface (5131) and the second mating surface (3052) are arc surfaces with the same radius. The abutment groove (3051) also includes a third mating surface (3053) formed on one side of the first mating surface (5131), and the third mating surface (3053) is used for conformal mating with the mating portion (513).

4. The underwater lifting platform stopping device according to claim 2, characterized in that: A shaft shoulder (432) is formed on one side of the rotating shaft (430) located at the first keyway (431), and the shaft shoulder (432) is used to abut against the matching plate (371) and the mounting portion (512). A distance ring (433) is provided on the side of the mounting portion (512) away from the shaft shoulder (432), and the distance ring (433) is sleeved on the outer wall of the shaft sleeve (440); a first clamping groove is formed on one end of the rotating shaft (430) located on the side of the distance ring (433) away from the shaft sleeve (440), and a first clamping ring (434) is provided at the first clamping groove, and the first clamping ring (434) is used to abut against the matching plate (371); a shaft sleeve (440) is provided at the second rotating hole (422), and the shaft sleeve (440) is sleeved on the outer wall of the rotating shaft (430).

5. The underwater lifting platform stopping device according to claim 4, characterized in that: The driving mechanism further comprises a transmission rod (350) arranged at one end of the rotating shaft (430) away from the clamping ring, a third rotating hole (451) passing through one side of the transmission rod (350), the third rotating hole (451) being used to cooperate with the rotating shaft (430); a third keyway (435) is formed on the side of the rotating shaft (430) away from the clamping ring at the shaft shoulder (432), a second flat key is arranged at the third keyway (435), a fourth keyway is formed correspondingly at the third rotating hole (451), the fourth keyway being used to abut against and cooperate with the second flat key.

6. The underwater lifting platform stopping device according to claim 5, characterized in that: A limiting plate (436) is provided at one end of the rotating shaft (430) close to the third keyway (435), the limiting plate (436) being used to abut against the transmission rod (350), and at least one threaded fastener (437) is provided at the limiting plate (436), the threaded fastener (437) being used to pass through the limiting plate (436) and threadably engage with the rotating shaft (430).

7. The underwater lifting platform stopping device according to claim 5, characterized in that: The driving mechanism also includes an electric push cylinder (360) arranged on a side of the sliding shoe (1021) away from the matching strip (105), the electric push cylinder (360) and the sliding shoe (1021) are rotatably matched, the electric push cylinder (360) has a telescopic rod (361) that is telescopic along its axial direction, a first plug-in portion (4611) is formed at the end of the telescopic rod (361), a first plug-in groove (452) is correspondingly formed at the transmission rod (350), and the first plug-in groove (452) is used to abut against and match with both sides of the first plug-in portion (4611); a fourth rotating hole (4612) is formed at the first plug-in portion (4611), and a fifth rotating hole (453) is correspondingly formed at the first plug-in groove (452), and a first ear shaft (480) is provided at the fifth rotating hole (453), and the first ear shaft (480) is used to rotatably match with the fourth rotating hole (4612) and the fifth rotating hole (453).

8. The underwater lifting platform stopping device according to claim 7, characterized in that: A first limiting end (481) is formed on one side of the first ear shaft (480), and the first limiting end (481) is used to abut against one side of the transmission rod (350). A second clamping groove is formed on the side of the first ear shaft (480) away from the first limiting end (481), and a second clamping ring (482) is detachably provided at the second clamping groove, and the second clamping ring (482) is used to cooperate with the side of the transmission rod (350) away from the first limiting end (481).

9. The underwater lifting platform stopping device according to claim 7, characterized in that: A fixed bracket (370) is provided on the side of the sliding shoe (1021) away from the matching strip (105), and the fixed bracket (370) includes a fixed plate (421) for fixedly matching with the sliding shoe (1021). A bracket body (372) is vertically provided at the fixing plate (421), and the bracket body (372) extends in a direction away from the matching strip (105); a lifting ear (373) is formed on the side of the bracket body (372) close to the electric push cylinder (360), and a second plug-in portion (463) is formed on the end of the electric push cylinder (360) away from the telescopic rod (361). 13), a second plugging groove (4731) is formed correspondingly at the lifting ear (373), and the second plugging groove (4731) is used to abut against the two sides of the second plugging portion (4613); a sixth rotation hole (4614) is formed at the second plugging portion (4613), and a seventh rotation hole (4732) is formed correspondingly at the second plugging groove (4731), and a second ear shaft (490) is provided at the seventh rotation hole (4732), and the second ear shaft (490) is used to rotationally cooperate with the sixth rotation hole (4614) and the seventh rotation hole (4732).

10. The underwater lifting platform stopping device according to claim 9, characterized in that: A second limiting end (491) is formed on one side of the second ear shaft (490), and the second limiting end (491) is used to abut against one side of the lifting ear (373). A third clamping groove is formed on the side of the second ear shaft (490) away from the second limiting end (491), and a third clamping ring (492) is detachably provided at the third clamping groove, and the third clamping ring (492) is used to cooperate with the side of the lifting ear (373) away from the second limiting end (491).

Images