KR101768976B1 - Hydraulic Cylinder-Operated Floating The Watercraft Lift Apparatus For Vertically Raising Or Lowering The Watercraft With The Frames Being Laid In The Floats - Google Patents

Abstract

The present invention relates generally to a vertical lift hydraulic cylinder-operated vessel lifting or immersion boat lift system comprising a lifting assembly, two pairs of hydraulic cylinder assemblies and a pair of buoyancy tanks, and more specifically, A lifting assembly between a pair of buoyancy tanks, a pair of hydraulic cylinder assemblies fixedly mounted on the buoyancy tank and vertically vertically movable to guide the vessel above and below the water surface, and a pair of longitudinally parallel extending hydraulic cylinders Buoyancy tank.

Description

Technical Field [0001] The present invention relates to a vertical lift-down hydraulic cylinder-operated boat lifting or flooding boat lift apparatus in which a frame is embedded in a buoyancy tank,

The present invention relates to an improvement of a Korean patent application No. 10-2015-0027746 filed on Feb. 28, 2015 by the present inventor (entitled " vertical lift hydraulic cylinder-operated ship lifting or immersion boat lift apparatus ") Invention.

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a boat lift apparatus for lifting a motor boat, a rubber boat, a fishing boat, a yacht or the like, which is vertically raised and lowered without a turning radius of a buoyancy tank,

Generally, when the hull is anchored, the water hits the outer surface of the hull due to the swelling of the water due to waves and the like, so that the outer surface of the hull can be physically damaged.

In addition, more than 600 species of marine creatures, including shellfish, mussels, and oysters, are attached to the submerged part of the hull when the vessel is operated for a long period of time or when the hull has been immersed in water, especially in seawater for many years. When such marine life attaches to the hull, serious problems arise, such as a decrease in the speed of operation of the ship due to friction with the sea surface, resulting in a doubling of the fuel cost. In order to prevent the attachment of marine organisms, antifouling paints are coated on flooded parts of ships. Most of antifouling paints are used by IMO (International Maritime Organization) because of environmental pollution such as toxicity to marine life. Is regulated. Although antifouling paints with low toxicity have been developed, their useful lives are limited and various problems associated with antifouling painting work arise.

Accordingly, it is usually necessary to physically remove marine life attached to the flooded surface of the hull at a period of 2 to 6 months, and to incur considerable expense.

In order to solve or alleviate the above problems, it is necessary to prevent the attachment of marine life by putting the vessel on the water surface when the marine vessel is not docked for a long time, and to dismantle the marine life already attached. Thus, various lift devices have been developed for lifting the ship in the air above the water surface. However, most of the lift devices are installed on the platform or installed in the water, which is ineffective due to corrosion problems, fluctuations in the height of the water due to the tide interval, and so on.

In order to solve such a problem, U.S. Patent No. 6,823,809 describes a ship lifting apparatus and method floating on a water surface. However, in this patent, when the vessel is lifted completely above the water surface, the lower portion of the lifting assembly is corroded to the water surface to deteriorate durability, and the connecting portion of the float and the lifting assembly, which receives loads of the ship and the lifting assembly, And is also less durable due to abrasive friction, and also because the roller bearing the load of the ship and the lifting device during the lifting of the buoyancy tank from above the water surface is completely separated from the buoyancy tank, Because it is operated only by the lift arm crossbeams, the buoyancy tank is in an unstable state where it shakes so much that it does not come up smoothly and smoothly on the surface of the water.

In addition, since the ship's lifting device of the above patent is always in a submerged state of the hydraulic cylinder, the hydraulic cylinder hose and the lifting assembly regardless of whether the ship is lifted or floated on the water surface, the apparatus as well as the hydraulic fluid Which causes environmental pollution problems.

In order to solve such a problem, the present inventor discloses that when lifting the vessel completely above the water surface, any part of the lifting assembly including the hydraulic cylinder and the hydraulic cylinder hose except the buoyancy tank is immersed in the water Operated boat lifting or immersion boat lift apparatus capable of causing the load transmission portion of the buoyancy tank to not be worn and allowing the buoyancy tank to rise and fall stably and smoothly up and down the water surface.

However, the boat lift apparatus of Japanese Patent No. 10-1453741 has a large turning radius when the buoyancy tank is lifted up or down the water surface to float or float the ship, so that it occupies a lot of space where the boat lift apparatus is installed, There was a need to increase the usability. In order to dramatically increase the space usability, the present inventor has found that in the patent application No. 10-2015-0027746 (vertical lift hydraulic cylinder-operated boat lifting or floatation boat lift apparatus), the buoyancy tank does not rotate, A hydraulic cylinder-operated boat lifting or immersion boat lift device capable of ascending and descending to and from the boat.

However, in the above-mentioned patent application of the present inventor, the ship can be loaded and unloaded without a turning radius of the buoyancy tank, but it has become necessary to further increase space utilization.

The present inventors have found that in a so-called "elevator type" boat lifting or flooding boat lift apparatus in which a ship is vertically raised and lowered without rotation of the buoyancy tank, the frame of the lift assembly is embedded in the buoyancy tank to greatly reduce the width between the two buoyancy tanks And thus the space utilization can be greatly increased. Thus, the present invention has been accomplished.

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a hydraulic cylinder-operated boat lifting or immersion boat lift apparatus in which the buoyancy tank is not rotated and the width between two buoyancy tanks is greatly reduced in order to dramatically increase space utilization.

Still another object of the present invention is to provide a vertical lift lifting and lowering hydraulic cylinder having a guide roller means for stably guiding a ship when entering or advancing a boat lift apparatus and roller means for smoothly lifting and lowering the hydraulic cylinder And to provide an operation boat lifting or immersion boat lift device.

A vertical lifting hydraulic cylinder-operated vessel lifting or immersion boat lift apparatus in which a frame is embedded in a buoyancy tank according to the present invention comprises a lifting assembly, two pairs of hydraulic cylinder assemblies, and a pair of buoyancy tanks. More specifically, the vertical lift hydraulic cylinder-operated vessel lifting or immersion boat lift apparatus of the present invention includes a lifting assembly between a pair of buoyancy tanks for supporting or receiving the vessel, Two pairs of hydraulic cylinder assemblies which are buried and vertically vertically operated to guide the ship up and down the water surface, and a pair of buoyancy tanks extending in parallel in the longitudinal direction.

Yet another embodiment of the present invention provides a lifting assembly comprising a lifting assembly between a pair of buoyancy tanks for loading a vessel; A hydraulic cylinder assembly capable of guiding the buoyancy tank above and below the water surface; And a pair of buoyancy tanks extending in parallel to each other in the longitudinal direction, characterized in that the hydraulic cylinder assembly comprises a hydraulic cylinder, a bracket slidable inside the cylindrical column, And a roller installed on the slope of the bracket for guiding the sliding movement of the bracket, wherein the frame is embedded in the buoyancy tank, the vertical lift-down hydraulic cylinder-operated boat lifting or immersion boat lift apparatus .

Another embodiment of the present invention is characterized in that the hydraulic cylinder is inserted into a hole formed at a distal end of the U-shaped frame by a connecting portion and is connected by a pin through a pinhole of a connecting pinhole, a pinhole of a frame, There is provided a boat lifting device for lifting or lowering a vertical lift-down hydraulic cylinder-operated vessel, in which a frame is embedded in a buoyancy tank.

According to another embodiment of the present invention, a pinhole for inserting a groove and a pin for inserting a front end of a frame is formed in a lower portion of the bracket, and rollers for guiding sliding movement of the bracket are installed on an outer slope of the bracket Wherein the frame is embedded in the buoyancy tank, wherein the frame is embedded in the buoyancy tank.

In another embodiment of the present invention, the buoyancy tank has a wide bottom surface, a narrow top surface, and a bent portion formed on the inside thereof. The buoyancy tank has a buoyancy portion and a tip portion that vertically rise and fall in a U- Characterized in that a cutting groove is formed in the central portion of the tank and the cylindrical column is provided in the cutting groove of the buoyancy tank. The vertical lifting hydraulic cylinder-operated vessel lifting or immersing boat Thereby providing a lift apparatus.

According to another aspect of the present invention, bolt holes are formed in the center of the cylindrical column to provide a locking device and a limit switch, and hydraulic cylinders are penetrated through the center hole and both sides of the lid Characterized in that bolt holes for fixing a bolt are formed on an upper portion of the buoyancy tank and a limit switch for stopping the rise of the frame is provided on the first locking bracket so that the frame is embedded in the buoyancy tank And to provide a vertical lift-down hydraulic cylinder-operated boat lifting or immersion boat lift device.

According to another aspect of the present invention, there is provided a method of manufacturing a gear mechanism, comprising: a first bracket having a slit formed at the center of a first gear bracket and including a toothed gear, a toothed bar serving as a safety pin, a rotary shaft of the toothed gear, and a motor connected to drive the rotary shaft; A second bracket having a hole into which the serration bar is inserted; And a pinion gear type locking device having a limit switch provided on the support table for stopping the rise of the frame, characterized in that the frame is a vertical up-down hydraulic cylinder-operated vessel embedded in a buoyancy tank, And a boat lift device.

In another embodiment of the present invention, the guide roller is provided in the hole in the lower portion of the buoyancy tank so that the guide roller is located above the water surface, and two rollers each having a small upper surface and a larger lower surface, A spring for moving the roller shaft along the width of the vessel, a housing having the groove for receiving the spring and the roller shaft and for inserting the square face of the roller shaft into the housing, There is provided a vertical lift-down hydraulic cylinder-operated boat lifting or immersion boat lift apparatus in which a frame is embedded in a buoyancy tank, characterized in that the frame is constituted by a fixing member for fixing the housing to the buoyancy tank by bolts .

Another embodiment of the present invention is characterized in that an actuator, a hydraulic cylinder or an air cylinder is used in place of the hydraulic cylinder, wherein the frame is a vertical up-down hydraulic cylinder-operated vessel flooded or immersed in a buoyancy tank And a boat lift device.

An improved vertical lift-up hydraulic cylinder-operated vessel lifting or immersion boat lift system is characterized in that any part of the lifting assembly, including the hydraulic cylinder and the hydraulic cylinder hose, except for the buoyancy tank, The load transmitting portion of the buoyancy tank is not damaged and the durability is good. In addition, since the ship can be vertically elevated and lowered by an elevator system without rotating the buoyancy tank, the space utilization of the place where the boat lift apparatus is installed is very good high.

1 is a view showing a state in which a ship is mounted on a vertical lifting hydraulic cylinder-operated boat lifting or immersion boat lift apparatus according to the present invention.
2 is a partially enlarged view of a locking means and a guide roller of a vertical ascent / descent boat lifting apparatus according to the present invention, and is a perspective view showing a state when the ship is completely floated over the water surface.
3 is a partially enlarged view of the locking means of the vertical ascending / descending boat lift apparatus according to the present invention, and is a perspective view showing a state when the ship is submerged.
4 is an exploded perspective view of a hydraulic cylinder assembly, a locking device, and a guide roller of the vertical lifting boat lift apparatus according to the present invention.
FIG. 5 is a front view of a vertical lift hydraulic cylinder-operated vessel lifting or immersion boat lift system according to the present invention, in which the vessel is fully raised above the water surface and the buoyancy tank is fully submerged;
FIG. 6 is a front view of a vertical lifting hydraulic cylinder-operated boat lifting or immersion boat lift apparatus according to the present invention, which is a state in which the buoyancy tank is fully lifted up to the water surface for immersing the ship.

Hereinafter, a vertical lifting hydraulic cylinder-operated boat lifting or immersion boat lift apparatus according to the present invention will be described in detail with reference to the drawings.

1 is a view showing a state in which a ship is mounted on a vertical lifting hydraulic cylinder-operated boat lifting or immersion boat lift apparatus in which a frame 11 is embedded in a buoyancy tank 30 according to the present invention. The types of vessels that can be used in the vertical lift-down hydraulic cylinder-operated boat lifting or immersion boat lift apparatus of the present invention include motor boats, utility boats, prefabricated rubber boats, fishing boats, cruise yachts, and dinghy yachts. Further, in the present invention, a hydraulic cylinder, an actuator or an air cylinder may be used instead of the hydraulic cylinder 21. [

FIG. 2 is a perspective view of the boat lifting apparatus showing a state in which the ship is fully raised on the water surface and the buoyancy tank 30 is sufficiently immersed in water, and the connection state of the frame 11 and the hydraulic cylinder assembly 20, ) Of the first embodiment. The vertical lifting hydraulic cylinder-operated vessel lifting or immersion boat lift apparatus of the present invention mainly comprises a lifting assembly 10 between a pair of buoyancy tanks 30 for supporting or receiving a vessel, A hydraulic cylinder assembly 20 capable of guiding the water surface 10 above and below the water surface 34 and a pair of buoyancy tanks 30 extending in parallel in the longitudinal direction.

The lifting assembly 10 includes a pair of U-shaped frames 11 with their distal ends 16 extending horizontally, a pair of vertical beams (not shown) for connecting between the U- The beam 15 having a pair of horizontal beams 15a and 15a and the hinge pin 14 of a plurality of supports 13 welded on the pair of vertical beams 15a, (Not shown). In the present invention, the number of the support plates 12 is four, but more can be used if necessary. The U-shaped frame 11 can be used as a reference for positioning when the ship enters the lift apparatus of the present invention.

4, the hydraulic cylinder assembly 20 includes a hydraulic cylinder 21, a bracket 24 that slides in the cylindrical support bar 31, and a bracket 24 that is installed on the slope of the bracket 24, And a roller 25 for guiding the sliding motion of the roller 24. Four rollers 25 are provided on one side of the bracket 24. The hydraulic cylinder 21 is inserted into a hole 17 formed in a front end portion 16 at both ends of the U-shaped frame 11 by a connecting portion 22 and is inserted into a pin 26c through pinholes 23a, 23b and 23c Lt; / RTI > Further, in the present invention, an actuator, a hydraulic cylinder, or an air cylinder may be used instead of the hydraulic cylinder. A groove 27 is formed in the lower portion of the bracket 24 so that the front end portion 16 of the frame 11 is inserted.

The front end portion 16 of the frame 11 is inserted into the lower groove 27 of the bracket 24 provided with the roller 25 and the hole 17 formed in the front end portion 16 of the frame 11 The pinhole 23a of the connecting portion 22 and the pinhole 23b of the front end portion 16 of the frame 11 and the pinhole 23c of the bracket 24 after the connecting portion 22 of the hydraulic cylinder 21 is inserted The hydraulic cylinder 21, the frame 11 and the bracket 24 are connected by inserting the pin 26c.

The buoyancy tank (30) has a wide lower surface and a narrow upper surface when viewed from the front, and a bent portion is formed inside the buoyancy tank (30). The buoyancy tank 30 may be made of a light metal such as aluminum or plastic such as fiber reinforced plastic (FRP), and may be integrally formed or a plurality of the buoyancy tanks 30 may be used in combination. As shown in Figs. 2 to 4, the buoyancy tank 30 is internally provided with the buoyancy tank 30 and the buoyancy tank 30 so that the inclined portion and the front end portion 16 of the U- And a cutting groove 35 is formed so that the toothed bar 44 of the locking device 40 reciprocates. Further, a cylindrical post 31 is installed in the cutting groove 35 of the buoyancy tank 30. The cylindrical column 31 is positioned at the center of the buoyancy tank 30 so as to balance the load of the boat lift in a stable manner. Bolt holes for installing the locking device 40 and the limit switch 46 are formed at the center of the support bar 31. The lid 33 penetrates the hydraulic cylinder 21 through a hole in the center thereof and covers the upper portion of the support column 31. Bolt holes for fixing bolts are formed on both sides of the buoyancy tank 30 on both sides of the lid 33. A limit switch 46 for stopping the rise of the frame 11 is provided on the first locking bracket 41, Is provided on the support platform 31. [

The boat lift apparatus according to the present invention is provided with a pinion gear type locking device 40 in order to prepare for safety due to failure of the hydraulic cylinder 21 or to maintain a lifted state of the ship for a long period of time. The pinion gear type locking device 40 has a slit formed at the center of the first locking bracket 41 and includes a toothed gear 43, a toothed bar 44 serving as a safety pin, a driving shaft of the toothed gear 43 A first locking bracket 41 having a motor 45 connected thereto; A second bracket 41a having a hole into which the serration bar 44 is inserted; And a limit switch 46 for stopping the rise of the frame 11.

The limit switch 46 is adjusted to fit the height at which the ship is fully raised above the water surface when the lift assembly 10 on which the vessel is mounted is lifted by the hydraulic cylinder 21. A power source (not shown) is supplied to operate the motor 45 and the toothed bar 44 is pulled out when the front end portion 16 of the frame 11 of the lift assembly 10 rises and the limit switch 46 is touched It comes out. If the oil pressure is released due to the failure of the hydraulic cylinder 21, the leading end portion 16 of the frame 11 is caught by the toothed bar 44, and the motor is not operated in this state, and the toothed bar is not operated. That is, when the tip end portion 16 of the frame 11 is hooked on the toothed bar 44, the motor is not operated. In order to descend the lift assembly 10 in order to submerge the ship on the water surface, the hydraulic cylinder 21 The limit switch 46 is designed to be pulled up so that the toothed bar 44 enters.

In addition, a plurality of buoyancy tanks (30) are provided under the buoyancy tank (30) so as to prevent abrasion due to direct contact between the ship and the buoyancy tank (30) when the ship enters or advance into the lift apparatus of the present invention, The guide roller 50 is installed. However, the guide roller 50 should always be installed on the water surface even when the ship is mounted or not mounted.

The guide roller 50 is installed in a hole 57 in a lower portion of the buoyancy tank 30 and has two rollers 54 each having a smaller upper surface and a larger lower surface and the upper roller being smaller than the lower roller, A roller shaft 53 having a square shape so as not to rotate on the other side, a spring 52 to be moved in accordance with the width of the ship, a spring 52 and a roller shaft 53 And a fixing member 56 for fixing the housing 51 to the buoyancy tank 30 by means of bolts. The housing 51 is formed with a groove for receiving a square shaft .

Referring to Figs. 2-6, the operation of submerging the vessel raised above the water surface 34 and the operation of fully lifting the vessel immersed in water above the water surface 34 will be described.

In FIG. 2, the mounted ship is fully raised above the water surface 34 and the buoyancy tank 30 is fully immersed. In order to immerse the ship on the water surface, if the hydraulic cylinder 21 is slightly pulled up and the limit switch 46 is operated to operate the motor 45, the toothed bar 44 of the pinion gear returns to the original position, Release. The hydraulic cylinder 21 is operated to push the distal end portion 16 of the frame 11 connected to the connecting portion 22 of the cylinder assembly 21 and the bracket 24 coupled with the distal end portion 16, The slider 24 is lowered through the slit 32 in the cylindrical support bar 31 and along the inclined portion and the front end portion 16 of the frame 11 through the cutting groove 35 of the buoyancy tank 30, The hydraulic cylinder 21 is operated until the vessel in which it has been completely floated on the water surface 34 by itself. The vessel then smoothly exits the lift device of the present invention through the guide roller 5.

Fig. 3 shows a state in which the mounted ship is completely floated on the water surface 34. Fig. In order to lift the vessel completely to the surface of the water (lift), the vessel is guided into the immersed lift assembly 10 and positioned, and the hydraulic cylinder 21 is operated so that the lift assembly 10 slowly ascends above the surface 34 do. At this time, when the front end portion 16 of the frame 11 touches the limit switch 46, the toothed bar 44 serving as a safety pin is pulled out by the operation of the motor 45 to support the lower end of the front end portion 16 of the frame 11 To support the ship. Therefore, any part of the boat lift apparatus according to the present invention other than the buoyancy tank 30 is not immersed in water.

In addition, the boat lift apparatus of the present invention may be provided with an alarm device and an infrared sensor for indicating completion of entry of the ship.

The most significant feature of the present invention is that the lift assembly 10 on which the ship is mounted is raised and lowered in a state where the buoyancy tank 30 remains unrotated and the adjacent facilities are not obstructed in the place where the boat lift apparatus is installed The buoyancy tank 30 can be anchored in the buoyancy tank 30 and the buoyancy tank 30 can be anchored to the buoyancy tank 30, A guide roller 50 for reducing wear caused by the contact between the ship and the lift device and guiding smooth entry and exit when the ship enters or advances the lift device of the present invention, Is provided in the buoyancy tank (30).

It will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

10: lifting assembly 11: U-shaped frame
12: foot plate 13: bottom support
14: Hinge pin 15a: Vertical beam
15b: a horizontal beam 16:
20: Hydraulic cylinder assembly
21: Hydraulic cylinder 22: Connection
23a, 23b, 23c: Pinhole 24: Bracket
25: roller 26c: pin
30: Buoyancy tank
31: support stand 32: slit
33: cover 34: sleeping
35: Cutting groove
40: locking device
41: first locking bracket 41a: second locking bracket
42: rotary shaft 43: toothed gear
44: Toothed bar 45: Motor
46: Limit switch
50: guide roller
51: housing 52: spring
53: roller shaft 54: roller
55: roller pin 56: fixing member
57: hole

Claims (8)

A lifting assembly (10) between a pair of buoyancy tanks (30) for loading the vessel; A hydraulic cylinder assembly (20) capable of guiding the buoyancy tank (30) above and below the water surface (34); And a pair of buoyancy tanks (30) extending in parallel in the longitudinal direction, wherein the buoyancy tanks (30)
The hydraulic cylinder assembly 20 is inserted into the hole 17 formed in the front end portion 16 at both ends of the U-shaped frame 11 by the connecting portion 22 and the connecting portion pinhole 23a, the pinhole 23b of the frame, A hydraulic cylinder 21 connected by a pin 26c through a pinhole 23c of the hydraulic cylinder 21; And a roller (25) provided on a slope of the bracket (24) for guiding the sliding motion of the bracket (24), characterized in that the bracket (24) (11) is embedded in the buoyancy tank (30). A vertical lifting / lowering hydraulic cylinder-operated vessel lifting or immersion system.
delete The method according to claim 1,
A groove 27 for inserting the front end portion 16 of the frame 11 and a pinhole 23c for inserting the pin 26c are formed in the lower portion of the bracket 24, Characterized in that the slope is provided with rollers (25) for guiding the sliding motion of the bracket (24). The vertical lift-down hydraulic cylinder-operated vessel lifting or immersion bogie lifting device, wherein the frame is embedded in a buoyancy tank.
The method according to claim 1,
The buoyancy tank 30 has a wide lower surface and a narrow upper surface and a bent portion formed inside the buoyancy tank 30. The inclined portion and the tip portion 16 of the U-shaped frame 11 are vertically raised and lowered, Characterized in that the cutting groove (35) is formed in the central portion of the buoyancy tank (30) so that the cylindrical support bar (31) is reciprocated in the buoyancy tank (30) A vertical lift-down hydraulic cylinder-operated vessel floatation or immersion boat lift system in which the frame is embedded in a buoyancy tank.
5. The method of claim 4,
Bolt holes for installing the locking device 40 and the limit switch 46 are formed at the center of the cylindrical column 31 and the hydraulic cylinder 21 is penetrated through the central hole, Bolt holes for fixing bolts are formed on the upper portion of the buoyancy tank 30 on both sides of the lid 33 covering the upper portion of the frame 31. On the first locking bracket 41, Wherein the frame is mounted in the buoyancy tank, characterized in that the limit switch (46) is provided on the support table (31).
The method according to claim 1,
A slit is formed in the center of the first locking bracket 41 and a toothed gear 43, a toothed bar 44 serving as a safety pin, a rotary shaft 42 of the toothed gear 43, A first locking bracket (41) having a motor (45) connected to drive the motor (45); A second bracket 41a having a hole into which the serration bar 44 is inserted; And a limit switch (46) provided on the support table (31) for stopping the elevation of the frame (11), characterized in that the frame comprises a pinion gear type locking device Lifting hydraulic cylinders - Boat lift devices for floating or submersible vessels.
The buoyancy tank (30) as set forth in claim 4, wherein the guide roller (50) is provided on the lower hole (57) of the buoyancy tank (30) so that the guide roller A roller shaft 53 having a hole formed therein for inserting the roller pin 55 into one side thereof and not rotating on the other side thereof, a spring 52 adapted to move in a flexible manner along the width of the ship, A housing 51 which receives the spring 52 and the roller shaft 53 and is formed with a groove for inserting a square face of the roller shaft 53, a housing 51 for fixing the housing 51 to the buoyancy tank 30 by bolts Wherein the frame is embodied in a buoyancy tank, characterized in that the frame is comprised of a fixed member (56). delete

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