Automatic steel wire rope tensioning mechanism, suspension arm and marine fender retracting and releasing device

Abstract

The invention belongs to the technical field of marine equipment, and relates to an automatic steel wire rope tensioning mechanism, a suspension arm and a marine fender retracting and releasing device.The automatic steel wire rope tensioning mechanism comprises a fixed pulley block and a movable pulley block, and the fixed pulley block comprises a plurality of fixed pulleys arranged side by side and a fixed pulley supporting frame; the movable pulley block is located below the fixed pulley block and comprises a plurality of movable pulleys, a movable pulley supporting frame, a balance weight and a plurality of limiting wheels, the movable pulleys are installed on the upper portion of the movable pulley supporting frame side by side, the balance weight is installed on the lower portion of the movable pulley supporting frame, and the limiting wheels are installed on the side wall of the movable pulley supporting frame. The automatic steel wire rope tensioning mechanism adopts a pulley block form, automatically tensions the steel wire rope under the action of gravity, and is convenient to use; a movable pulley block adopts a self-aligning bearing, so that a movable pulley is automatically adjusted to the direction of a steel wire rope, the torsional moment is eliminated, a counterweight is prevented from being blocked in a slideway, and an automatic tensioning mechanism is mounted in a suspension arm of the marine fender retracting and releasing device, so that potential safety hazards are eliminated.

Description

Technical Field

[0001] The invention belongs to the technical field of fender hangers and relates to an automatic wire rope tensioning mechanism, a hanging arm and a ship fender retracting and releasing device. Background Art

[0002] The main function of the marine fender retracting and deploying device is to support and fix the fender, ensure that the fender can be stably installed on the edge of the dock or ship, slow down the friction between the ship and the dock or between the ship during the docking or mooring process, and reduce or eliminate the damage to the ship and the dock.

[0003] Chinese patent CN220114784U discloses a marine fender retracting and releasing device, comprising: two oil cylinders, a fender hanging mechanism; the fender hanging mechanism comprises: a support beam, two booms, and a wire rope retracting and releasing mechanism; the two booms are respectively a first boom and a second boom, the two booms are symmetrically fixed on both sides of the support beam, and the two booms have the same structure; the wire rope retracting and releasing mechanism comprises: a hydraulic pump, an oil tank, a winch installed in the support beam, and a pulley guide assembly installed in the two booms, the hydraulic pump is connected to the oil tank and the motor of the winch, the winch is wound with two wire ropes, the first wire rope is transmitted through the pulley guide assembly in the first boom, the second wire rope is transmitted through the pulley guide assembly in the second boom, the ends of the two wire ropes are drawn out from the two booms and connected to the two sides of the fender respectively, although the wire rope retracting and releasing mechanism of the utility model is installed inside the device, saving space, but the working efficiency is low, and after use, the wire rope is affected by sea surface factors (such as sea breeze) and has low stability.

[0004] Therefore, a marine fender retracting and lowering device with high stability and high efficiency is needed. Summary of the invention

[0005] The purpose of the present invention is to overcome the shortcomings of the prior art and provide an automatic wire rope tensioning mechanism, a boom and a ship fender retracting and releasing device. The automatic wire rope tensioning mechanism adopts a pulley block and is installed inside the boom. It is safe to use, and the movable pulley block adopts a self-aligning bearing, which can automatically adjust the movable pulley to the direction of the wire rope, eliminate the torsional moment, and avoid the counterweight from being stuck in the slideway.

[0006] The technical solution adopted by the present invention to solve the technical problem is:

[0007] A first aspect of the present invention provides a steel wire rope automatic tensioning mechanism for a ship fender folding and lowering device, wherein the steel wire rope automatic tensioning mechanism is installed inside a boom of the ship fender folding and lowering device, and comprises:

[0008] A fixed pulley block, the fixed pulley block comprising a plurality of fixed pulleys arranged side by side and a fixed pulley support frame;

[0009] A movable pulley block, the movable pulley block is located below the movable pulley block, and includes a plurality of movable pulleys, a movable pulley support frame, a counterweight and a plurality of limit wheels, wherein a plurality of movable pulleys are installed side by side on the upper part of the movable pulley support frame, a counterweight is installed on the lower part, and a plurality of limit wheels are installed on the side wall of the movable pulley support frame, wherein the limit wheels move in a limit track, and the limit track is installed in the boom;

[0010] The wire rope is wound in the order of fixed pulley, movable pulley, fixed pulley, movable pulley... and finally fixed pulley, and the wire rope is automatically tightened through the movable pulley group.

[0011] Furthermore, the plurality of movable pulleys are mounted on the movable pulley support frame via self-aligning bearings.

[0012] Furthermore, there are three fixed pulleys, namely the first fixed pulley, the second fixed pulley, and the third fixed pulley, and there are two movable pulleys, namely the first movable pulley and the second movable pulley. The wire rope passes around the first fixed pulley, the first movable pulley, the second fixed pulley, the second movable pulley, and the third fixed pulley in sequence.

[0013] Furthermore, the limiting wheel includes a transverse limiting wheel and / or a longitudinal limiting wheel.

[0014] Furthermore, there are four limiting rails, each of which is L-shaped, and the four limiting rails are symmetrically installed in the boom.

[0015] Furthermore, a limiting plate is installed at the lower part of the limiting track.

[0016] A second aspect of the present invention provides a boom including the automatic wire rope tensioning mechanism, wherein the boom is composed of two parallel and spaced-apart wall panels, and the automatic wire rope tensioning mechanism is installed between the two wall panels.

[0017] Furthermore, a plurality of transmission fixed pulleys are installed between the two wall plates of the boom.

[0018] A third aspect of the present invention provides a marine fender folding and lowering device comprising the boom.

[0019] The advantages and positive effects of the present invention are:

[0020] 1. The automatic wire rope tensioning mechanism of the present invention adopts a pulley block form, which can automatically tension the wire rope by gravity and is easy to use; the movable pulley block adopts a self-aligning bearing, so that the movable pulley automatically adjusts to the direction of the wire rope, eliminates the torsional moment, and avoids the counterweight from being stuck in the slideway.

[0021] 2. The automatic wire rope tensioning mechanism is installed in the boom of the present invention, which eliminates potential safety hazards, is not easily corroded by the external environment, increases service life, and has high stability.

[0022] 3. The ship fender retracting and releasing device of the present invention adopts an automatic wire rope tensioning mechanism, which is installed on the boom of the inner wall, and is safe to use, easy to maintain, and has high working efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of the automatic wire rope tensioning mechanism of the present invention from a first perspective;

[0024] Figure 2 It is a structural schematic diagram of the automatic wire rope tensioning mechanism of the present invention from a second viewing angle;

[0025] Figure 3 It is a schematic structural diagram of the boom of the present invention from a first viewing angle;

[0026] Figure 4 It is a schematic structural diagram of the boom of the present invention from a second viewing angle;

[0027] Figure 5 It is a schematic structural diagram of the boom of the present invention from a third viewing angle;

[0028] Figure 6 It is a schematic structural diagram of the boom of the present invention from a fourth viewing angle;

[0029] Figure 7 It is a schematic structural diagram of the marine fender retracting and deploying device from a first perspective of the present invention;

[0030] Figure 8 It is a schematic structural diagram of the marine fender retracting and lowering device according to the present invention from a second viewing angle;

[0031] Fig. 9 It is a schematic structural diagram of the marine fender retracting and deploying device from a third perspective of the present invention;

[0032] The reference numerals are as follows:

[0033] 1-fixed pulley block, 11-first fixed pulley, 12-second fixed pulley, 13-third fixed pulley, 14-fixed pulley support frame, 2-movable pulley block, 21-lateral limiting wheel, 22-longitudinal limiting wheel, 23-self-aligning bearing, 24-second movable pulley, 25-first movable pulley, 26-counterweight, 27-movable pulley support frame, 28-limiting track, 3-wall panel, 31-transmission fixed pulley one, 32-limiting plate, 33-transmission fixed pulley two, 34-transmission fixed pulley three, 35-hydraulic cylinder, 4-winch, 41-wire rope, 5-guide fixed pulley, 6-support beam, 7-fender base, 8-support seat, 9-fender, 10-controller. DETAILED DESCRIPTION

[0034] The present invention is further described in detail below through specific examples. The following examples are only illustrative and not restrictive, and the protection scope of the present invention cannot be limited thereto.

[0035] like Figure 1-Figure 2 The shown embodiment is an automatic wire rope tensioning mechanism for a ship fender folding and releasing device, which is installed inside the boom of the ship fender folding and releasing device and is used to realize automatic tensioning of a wire rope 41 , and comprises a fixed pulley block 1 and a movable pulley block 2 .

[0036] The fixed pulley assembly 1 comprises a first fixed pulley 11 , a second fixed pulley 12 , a third fixed pulley 13 and a fixed pulley support frame 14 which are arranged side by side.

[0037] The movable pulley block 2 is located below the fixed pulley block 1, and includes a first movable pulley 25, a second movable pulley 24, a movable pulley support frame 27, a counterweight 26 and a limiting wheel. The first movable pulley 25 and the second movable pulley 24 are installed side by side on the upper part of the movable pulley support frame 27 through two self-aligning bearings 23, and the counterweight 26 is installed on the lower part of the movable pulley support frame 27. 16 limiting wheels are installed on the side wall of the movable pulley support frame 27, including 8 transverse limiting wheels 21 and 8 longitudinal limiting wheels 22.

[0038] like Figure 4 and Figure 6 As shown, the transverse limiting wheel 21 and the longitudinal limiting wheel 22 can both move up and down in the limiting track 28. There are four limiting tracks 28, each of which is L-shaped. The four limiting tracks 28 are symmetrically installed in the boom. A limiting plate 32 is installed at the bottom of the four limiting tracks 28. The limiting plate 32 is fixed between the two wall plates 3 of the boom. The limiting plate 32 can prevent the counterweight 26 from sliding out of the limiting track 28.

[0039] The wire rope 41 is wound in the order of the first fixed pulley 11, the first movable pulley 25, the second fixed pulley 12, the second movable pulley 24 and the third fixed pulley 13. After the wire rope 41 is retracted and released, the self-aligning bearing 23 can automatically adjust the movable pulley block 2 to the direction of the wire rope 41, eliminate the torsional moment, and avoid the counterweight 26 from being stuck in the slideway, thereby realizing automatic tightening of the wire rope 41 through the movable pulley block 2.

[0040] like Figure 3-Figure 6 The boom shown includes an automatic wire rope tensioning mechanism, which is composed of two parallel and spaced wall panels 3 , and the automatic wire rope tensioning mechanism is installed between the two wall panels 3 .

[0041] Three transmission fixed pulleys are installed between the two wall plates 3 of the boom, namely, transmission fixed pulley 1 31, transmission fixed pulley 2 33 and transmission fixed pulley 3 34. The steel wire rope 41 is wound in the order of transmission fixed pulley 1 31, steel wire rope automatic tensioning mechanism, transmission fixed pulley 2 33 and transmission fixed pulley 3 34.

[0042] like Figure 7~Figure 9A marine fender retracting and releasing device shown in the figure comprises two support seats 8, two booms including automatic wire rope tensioning mechanisms, a support beam 6, a winch 4, a wire rope 41, two hydraulic cylinders 35 and a controller 10. The two booms including automatic wire rope tensioning mechanisms are symmetrically fixed on both sides of the support beam 6, the winch 4 is installed in the middle of the support beam 6, and the winch 4 is wound with two wire ropes 41. The two wire ropes 41 are respectively introduced into the two booms through three guide fixed pulleys 5, and are connected to the fender 9 after passing through the transmission fixed pulley and the automatic wire rope tensioning mechanism. The fender base 7 supports the fender 9, the support seat 8 is fixed on the support beam 6, and is connected to the boom through a rotating shaft, and the controller 10 controls the working state of the winch 4 and the two hydraulic cylinders 35.

[0043] The above description is only a preferred embodiment of the present invention. It should be pointed out that a person skilled in the art can make several modifications and improvements without departing from the inventive concept, which all belong to the protection scope of the present invention.

Claims

1. A steel wire rope automatic tensioning mechanism for a marine fender retracting and releasing device, characterized in that: The automatic wire rope tensioning mechanism is installed inside the boom of the marine fender retracting and releasing device, and comprises: A fixed pulley block (1), the fixed pulley block (1) comprising a plurality of fixed pulleys arranged side by side and a fixed pulley support frame (14); A movable pulley block (2), the movable pulley block (2) being located below the fixed pulley block (1), comprising a plurality of movable pulleys, a movable pulley support frame (27), a counterweight (26) and a plurality of limiting wheels, the plurality of movable pulleys being mounted side by side on the upper portion of the movable pulley support frame (27), the counterweight (26) being mounted on the lower portion, and a plurality of limiting wheels being mounted on the side wall of the movable pulley support frame (27), the limiting wheels moving in a limiting track (28), and the limiting track (28) being mounted in the boom; The steel wire rope (41) is wound in the order of a fixed pulley, a movable pulley, a fixed pulley, a movable pulley, ... and finally a fixed pulley, and the steel wire rope (41) is automatically tightened by the movable pulley block (2).

2. The automatic wire rope tensioning mechanism for a marine fender retracting and lowering device according to claim 1, characterized in that: The plurality of movable pulleys are mounted on the movable pulley support frame (27) via self-aligning bearings (23).

3. The automatic wire rope tensioning mechanism for a marine fender retracting and lowering device according to claim 1, characterized in that: There are three fixed pulleys, namely a first fixed pulley (11), a second fixed pulley (12), and a third fixed pulley (13); there are two movable pulleys, namely a first movable pulley (25) and a second movable pulley (24); and the wire rope (41) passes around the first fixed pulley (11), the first movable pulley (25), the second fixed pulley (12), the second movable pulley (24), and the third fixed pulley (13) in sequence.

4. The automatic wire rope tensioning mechanism for a marine fender retracting and lowering device according to claim 1, characterized in that: The limiting wheels include a transverse limiting wheel (21) and / or a longitudinal limiting wheel (22).

5. The automatic wire rope tensioning mechanism for a marine fender retracting and lowering device according to claim 1, characterized in that: There are four limiting rails (28), each limiting rail (28) is L-shaped, and the four limiting rails (28) are symmetrically installed in the suspension arm.

6. The automatic wire rope tensioning mechanism for a marine fender retracting and lowering device according to claim 5, characterized in that: A limiting plate (32) is installed at the lower part of the limiting rail (28).

7. A boom comprising the automatic wire rope tensioning mechanism according to any one of claims 1 to 6, characterized in that: The boom is composed of two parallel and spaced wall panels (3), and the steel wire rope (41) automatic tensioning mechanism is installed between the two wall panels (3).

8. The boom according to claim 7, characterized in that: A plurality of transmission fixed pulleys are installed between the two wall plates (3) of the boom.

9. A marine fender retracting and lowering device comprising the boom according to claim 7.

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