A lifting device for lifting a ship heating coil unit and a method of using the same

Abstract

The present invention discloses a hoisting device for hoisting a heating coil unit of a ship. The hoisting device comprises a group of parallel transverse hoisting rods, a plurality of longitudinal sliding rods arranged perpendicular to the transverse hoisting rods are arranged between the two transverse hoisting rods, and a plurality of heating coil clamps are hung on each longitudinal sliding rod; the transverse hoisting rod comprises a transverse steel groove, and a group of locking mechanisms are respectively arranged at both ends of the transverse steel groove; the longitudinal sliding rod comprises a group of telescopic large and small diameter sleeves, and a sealing plate slider is respectively arranged at both ends of the longitudinal sliding rod, and the sealing plate slider is clamped in the transverse steel groove. When in use, the length of the longitudinal sliding rod can be adjusted, which is suitable for hoisting heating coil units of different lengths; the spacing of the longitudinal sliding rods can be adjusted, which is suitable for irregular spacing between heating coils. The present invention has a simple structure, is easy to install and disassemble, is suitable for heating coils of different specifications, and has a wide range of uses.

Description

Technical Field

[0001] The present invention mainly relates to the technical field of shipbuilding industry, and in particular to a hoisting device for hoisting a ship heating coil unit and a use method thereof, and more particularly to a universal hoisting device. Background Art

[0002] At present, a large number of heating coils made of carbon steel or special materials (stainless steel or duplex stainless steel plates) are used in the oil tanks of bulk carriers, container ships, oil tankers, chemical tankers and other ships under construction in shipyards. Under the requirements of the modern shipbuilding model based on the principle of moving the outfitting process forward, the heating coils installed on the ship are usually assembled into heating coil units in the workshop. Since the shipyard is not equipped with a dedicated heating coil unit hoist and the wall of the heating coil is relatively thin, it is very easy to deform the coil when hoisting with a non-dedicated hoist, and even damage the heating coil, which will increase the construction cost of the shipyard and extend the cycle.

[0003] 1. The hoisting process of conventional heating coils is as follows:

[0004] (1) Assemble the heating coil into a piping unit;

[0005] (2) Making or using non-universal lifting equipment for lifting heating coil units;

[0006] (3) Make lifting fixtures of the same material as the heating coils to be hoisted, especially stainless steel and duplex stainless steel fixtures;

[0007] (4) Clamp the fixture onto the heating coil unit and use the lifting device to lift the unit to the corresponding position.

[0008] 2. The conventional lifting process has the following disadvantages:

[0009] (1) Since the wall of the heating coil is relatively thin, the heating coil may be easily distorted when the heating coil unit is hoisted by a special hoist;

[0010] (2) When hoisting the heating coil unit, the distribution of the coil fixture is unreasonable and uneven, causing the heating coil to be locally stressed and causing the coil to twist and deform;

[0011] (3) The coil clamp is not universal and cannot be used between ordinary carbon steel and special materials;

[0012] (4) Heating coils made of special materials such as stainless steel and duplex stainless iron cannot be corrected by pyrotechnics after deformation and distortion. The only option is to replace the coils, which increases the construction cost of the shipyard. Summary of the invention

[0013] In view of the above problems, the present invention provides a hoisting device for hoisting a heating coil unit of a ship and a method for using the hoisting device, which can be suitable for heating coils of different specifications and shapes and reduce deformation or damage problems of the heating coil unit during hoisting.

[0014] The objective of the present invention can be achieved through the following technical scheme: a lifting device for lifting a heating coil unit of a ship, characterized in that the lifting device comprises a group of parallel transverse lifting rods, a plurality of longitudinal sliding rods arranged perpendicular to the transverse lifting rods are arranged between the two transverse lifting rods, and a plurality of heating coil clamps are suspended on each longitudinal sliding rod; the transverse lifting rod comprises a transverse steel groove, and a group of locking mechanisms are respectively provided at both ends of the transverse steel groove to control the tightness of the groove of the transverse steel groove; the longitudinal sliding rod comprises a group of retractable large and small diameter sleeves, and a sealing plate slider is respectively provided at both ends of the longitudinal sliding rod, and the sealing plate slider is clamped in the transverse steel groove.

[0015] Preferably, the heating coil chuck includes a clip and a buckle connected to the clip, the clip is slidably connected to the longitudinal slide rod through the buckle, a rubber gasket is attached to the inner wall of the clip, and a connecting bolt and a connecting nut are provided at the end of the clip.

[0016] Furthermore, the large and small diameter casings are made of carbon steel pipes, the diameter difference between the large and small diameter casings is 6-12mm, the large diameter casing is provided with an inwardly contracted folded edge at the connecting end with the small diameter casing, and the small diameter casing is provided with an outwardly expanded folded edge at the connecting end with the large diameter casing, and the sealing plate slider is made of carbon steel plate.

[0017] A method for using a lifting device for lifting a heating coil unit on a ship, characterized in that the using steps are as follows: a. adjusting the spacing of the clips according to the diameter of the heating coil, and evenly clamping the clips on the heating coil; b. determining the number of longitudinal slide bars according to the number of coils in the heating coil unit, each longitudinal slide bar is connected to a heating coil; c. adjusting the spacing between the longitudinal slide bars according to the spacing between the heating coils, the spacing between the longitudinal slide bars is the same as the spacing between the heating coils, adjusting the sealing plate slider into place, and installing the stop nut and the stop bolt; d. determining the length of the longitudinal slide bar, i.e. the large-diameter casing and the small-diameter casing, according to the length of the heating coil unit; e. lifting the adjusted lifting device above the heating coil, and fixing the clips to the large-diameter and small-diameter casings of the longitudinal slide bar by buckles; f. lifting the heating coil unit.

[0018] Compared with the prior art, the technical solution of the present invention not only improves the overall technical solution, but also includes many improvements in details. Specifically, it has the following beneficial effects:

[0019] 1. The improved scheme of the present invention has strong versatility. When in use, the length of the longitudinal slide bar can be adjusted, which is suitable for the hoisting of heating coil units of different lengths; the spacing of the longitudinal slide bar can be adjusted, which is suitable for the irregular spacing between heating coils; the rubber gasket is installed on the clamp, which is suitable for the hoisting of heating coil units of different materials; the width of the clamp can be adjusted, which is suitable for the hoisting of heating coil units of different pipe diameters.

[0020] 2. The structure of the present invention can effectively protect the heating coil unit. When the hoist is used for hoisting, the heating coil is evenly stressed and will not be deformed or damaged due to excessive local stress. Rubber is attached to the inside of the chuck to avoid direct contact between metals, which can effectively protect the surface of the heating coil.

[0021] 3. The sling of the present invention is convenient for storage. The sling can be disassembled and stored when not in use, without taking up much storage space.

[0022] 4. The present invention has a simple structure, is easy to install and disassemble, is applicable to heating coils of different specifications, has a wide range of uses, and is easy to promote and utilize. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a stereogram of the present invention.

[0024] Figure 2 It is a structural schematic diagram of an embodiment of the present invention.

[0025] Figure 3 It is a schematic structural diagram of the transverse suspension rod of the present invention.

[0026] Figure 4 It is a schematic structural diagram of the heating coil joint of the present invention.

[0027] The following are marked in the figure:

[0028] 1 transverse channel steel, 2 stop nut, 3 stop bolt, 4 lifting ear, 5 large diameter casing, 6 small diameter casing, 7 sealing plate slider, 8 clip, 9 buckle, 10 connecting bolt, 11 connecting nut, 12 rubber gasket. DETAILED DESCRIPTION

[0029] The specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings so that those skilled in the art can more clearly understand how to practice the present invention. Although the present invention is described in conjunction with its preferred specific embodiments, these embodiments are only illustrative, rather than limiting the scope of the present invention.

[0030] like Figure 1As shown, a lifting device for lifting a heating coil unit of a ship is different from the prior art in that the lifting device comprises a group of parallel transverse lifting rods, a plurality of longitudinal sliding rods perpendicular to the transverse lifting rods are arranged between two transverse lifting rods, and a plurality of heating coil clamps are suspended on each longitudinal sliding rod; the transverse lifting rod comprises a transverse steel groove, and a group of locking mechanisms are respectively provided at both ends of the transverse steel groove to control the tightness of the groove of the transverse steel groove; the longitudinal sliding rod comprises a group of retractable large and small diameter sleeves, and a sealing plate slider is respectively provided at both ends of the longitudinal sliding rod, and the sealing plate slider is clamped in the transverse steel groove.

[0031] Specifically, the transverse hanger is composed of channel steel, and stop bolts with stop nuts are provided at both ends of the channel steel, which are used to limit the longitudinal sliding rod and fix it in the sliding groove of the transverse hanger through a sealing plate slider; a number of lifting ears are equidistantly provided on the upper surface of the transverse hanger for passing steel wire ropes or slings.

[0032] In one embodiment, the sling comprises two transverse slings, a plurality of telescopic longitudinal slide bars and a plurality of heating coil clamps, wherein the number of longitudinal slide bars is 2-20, and the number of heating coil clamps is 2-6 for each longitudinal slide bar.

[0033] Furthermore, the heating coil clamp includes a clamp and a buckle connected to the clamp, the clamp is slidably connected to the longitudinal slide rod through the buckle, and a rubber gasket is attached to the inner wall of the clamp to avoid direct contact between metals and damage to the heating coil, and is suitable for heating coils of different materials. The end of the clamp is provided with a connecting bolt and a connecting nut, and the connecting bolt and the connecting nut can be adjusted to be suitable for heating coils of different pipe diameters. . The clamp and the buckle are made of stainless steel, and the clamp is composed of two symmetrical sub-clamps assembled in an eight-shaped shape. The connection at the upper end of the clamp is connected by a buckle, and the connection at the lower end of the clamp is provided with a connecting hole, and a connecting bolt is provided in the connecting hole.

[0034] Among them, the large and small diameter casings are made of carbon steel pipes, and the diameter difference between the large and small diameter casings is 6-12mm to achieve adjustment in the longitudinal length direction. The large diameter casing is provided with an inward-closed folding edge at the connection end with the small diameter casing, and the small diameter casing is provided with an outward-expanding folding edge at the connection end with the large diameter casing. The sealing plate sliders are respectively located at both ends of the large diameter casing and the small diameter casing, and are fixed in the sliding groove of the horizontal hanger to ensure that the large diameter casing and the small diameter casing slide along the horizontal channel steel. The sealing plate slider is made of carbon steel plate.

[0035] The transverse steel channel is a T-shaped slot. The locking mechanism is a stop bolt and a stop nut that matches the stop bolt. The transverse steel channel is provided with upper and lower screw holes. The stop bolt runs through the transverse steel channel and is perpendicular to the transverse steel channel. The edges of the transverse suspension rod, lifting lug, sealing plate slider and chuck are all chamfered. The transverse channel steel and lifting lug are sprayed with paint.

[0036] In a specific embodiment, the universal hanger includes two transverse hangers, a plurality of longitudinal slide bars and a heating coil clamp. The transverse hanger includes a transverse channel steel, a stop nut, a stop bolt and a lifting lug, which is used to fix the longitudinal slide bar and bear the weight of the longitudinal slide bar and the heating coil unit. The longitudinal slide bar includes a large diameter sleeve, a small diameter sleeve and a sealing plate slider, which is used to adjust the length and width of the hanger according to the length and width of the heating coil unit. The clamp includes a clip, a buckle, a connecting bolt, a connecting nut and a rubber gasket, which is used to connect the heating coil unit and the longitudinal slide bar.

[0037] Preferably, Figure 1 As shown, the longitudinal slide bar includes a large diameter sleeve 5, a small diameter sleeve 6 and a sealing plate slider 7. The large diameter sleeve 5 is an ordinary carbon steel pipe with a specification of DN40. The small diameter sleeve 6 is an ordinary carbon steel pipe with a specification of DN32. The interface end of the large diameter sleeve 5 and the small diameter sleeve 6 is closed, and the interface end of the small diameter sleeve 6 and the large diameter sleeve 5 is expanded to prevent the two sleeves from detaching. The sealing plate slider 7 is made of carbon steel plate with a thickness of 12mm, welded to the sleeve as a whole and arranged in the transverse channel steel 1. The longitudinal slide bar can adjust the longitudinal length according to the length of the heating coil unit, and adjust the transverse spacing according to the spacing between the heating coils.

[0038] Preferably, Figure 3 As shown, the transverse hanger includes two transverse channel steels 1, a stop nut 2, a stop bolt 3 and a lifting lug 4. The transverse channel steel 1 of the transverse hanger is made of a carbon steel plate with a specification of 12 mm, and holes are punched at both ends of the transverse channel steel according to the specifications of the stop bolts. The stop nut 2 is made of an ordinary carbon steel hexagonal nut with a specification of M30 and a blackened surface. The stop bolt 3 is an ordinary carbon steel hexagonal bolt with a specification of M30 and a blackened surface. The specification of the lifting lug 4 is 2 tons / piece and is made of a 20 mm ordinary carbon steel plate. After the closing plate sliders 7 at both ends of the longitudinal slide bar are moved into place, the stop nut 2 and the stop bolt 3 are installed on the transverse channel steel 1 to fix the longitudinal slide bar.

[0039] Preferably, Figure 1 and Figure 4As shown, the chuck includes a clip 8, a buckle 9, a connecting bolt 10, a connecting nut 11 and a rubber gasket 12. The clip 8 is made of stainless steel to increase its toughness, and has a thickness of 16 mm. The buckle 9 is an outdoor heavy-duty flat-mouth buckle 79 mm, with a thickness of 1.8 mm and is made of stainless steel. The connecting bolt 10 is a hexagonal bolt with a specification of M20 and is made of stainless steel. The connecting nut 11 is a hexagonal nut with a specification of M20 and is made of stainless steel. The rubber gasket 12 is 8 mm thick and is connected to the clip 8 with special glue. According to the diameter of the heating coil, adjust the connecting bolts 10 and the connecting nuts 11 at the bottom of the two clips 8, and fix the chuck on the heating coil. After the sling is hoisted into place, fix the upper chuck of the clip 8 to the longitudinal slide bar through the buckle 9.

[0040] Preferably, all the edges of the transverse channel steel 1, the lifting lug 4, the sealing plate slider 7 and the clamp 8 are chamfered, wherein the chamfer of the transverse channel steel 1, the lifting lug 4 and the sealing plate slider 7 is R3mm, and the clamp 8 is chamfered until it is smooth.

[0041] Preferably, all transverse channel steels 1 and lifting ears 4 made of carbon steel are sprayed with paint, and the paint film thickness is 80 mm.

[0042] In a specific embodiment of the method of use, the steps of use are as follows: a. adjust the spacing of the clips according to the diameter of the heating coil, and evenly clamp the clips on the heating coil; b. determine the number of longitudinal slide bars according to the number of coils in the heating coil unit; c. adjust the spacing between the longitudinal slide bars according to the spacing between the heating coils, adjust the sealing plate slider into place, and install the stop nut and the stop bolt; d. determine the length of the longitudinal slide bar, i.e. the large diameter sleeve and the small diameter sleeve, according to the length of the heating coil unit; e. hoist the adjusted hanger above the heating coil, and fix the clip to the large and small diameter sleeves of the longitudinal slide bar by buckles; f. hoist the heating coil unit.

[0043] Furthermore, in step b, the longitudinal slide bar includes a group of retractable large and small diameter sleeves, and a sealing plate slider is respectively provided at both ends of the longitudinal slide bar, and the sealing plate slider is clamped in the transverse steel groove; the large and small diameter sleeves are made of carbon steel pipes, and the diameter difference between the large and small diameter sleeves is 6-12mm. The large diameter sleeve is provided with an inward-closed folded edge at the connecting end with the small diameter sleeve, and the small diameter sleeve is provided with an outward-expanded folded edge at the connecting end with the large diameter sleeve, and the sealing plate slider is made of carbon steel plate.

[0044] In step a, the heating coil chuck includes a clip and a buckle connected to the clip, the clip is slidably connected to the longitudinal slide rod through the buckle, a rubber gasket is attached to the inner wall of the clip, and a connecting bolt and a connecting nut are provided at the end of the clip; the clip and the buckle are made of stainless steel, the clip is composed of two symmetrical sub-clips assembled in an eight-shaped shape, the connection at the upper end of the clip is connected by the buckle, and the connection at the lower end of the clip is provided with a connecting hole, and a connecting bolt is provided in the connecting hole.

[0045] It should be noted that the fully described invention may also have a variety of variations and modifications, and is not limited to the specific embodiments of the above embodiments. The above embodiments are merely illustrative of the invention, not limiting thereof. In short, the scope of protection of the invention should include those variations or substitutions and modifications that are obvious to a person of ordinary skill in the art, and shall be subject to the appended claims.

Claims

1. A lifting device for lifting a heating coil unit on a ship, characterized in that: The hanger includes a group of parallel transverse hangers, between which are arranged a number of longitudinal slide bars which are perpendicular to the transverse hangers, and on each longitudinal slide bar a number of heating coil clamps are hung; the transverse hanger includes a transverse steel groove, at both ends of which are provided a group of locking mechanisms for controlling the tightness of the grooves of the transverse steel grooves; the longitudinal slide bar includes a group of retractable large and small diameter casings, at both ends of the longitudinal slide bar are provided a sealing plate slider, which is clamped in the transverse steel groove; the large and small diameter casings are made of carbon steel pipes, the diameter difference between the large and small diameter casings is 6-12mm, the large diameter casing is provided with an inwardly closed folded edge at the connecting end with the small diameter casing, and the small diameter casing is provided with a sealing plate slider at the connecting end. The connecting end with the large diameter casing is provided with an outward-flashed folded edge, and the sealing plate slider is made of carbon steel plate; the longitudinal slide bar is adjusted in longitudinal length according to the length of the heating coil unit, and in transverse spacing according to the spacing between the heating coils. After the sealing plate sliders at both ends of the longitudinal slide bar are moved into place, the stop nuts and stop bolts are installed on the transverse channel steel to fix the longitudinal slide bar; the heating coil clamp includes a clip and a buckle connected to the clip, and the clip forms a slidable connection with the longitudinal slide bar through the buckle, and a rubber gasket is attached to the inner wall of the clip, and a connecting bolt and a connecting nut are provided at the end of the clip, which can be adapted to heating coils of different diameters by adjusting the connecting bolts and the connecting nuts.

2. A lifting device for lifting a ship heating coil unit according to claim 1, characterized in that: The clip and the buckle are made of stainless steel. The clip is composed of two symmetrical sub-clip pieces assembled in an eight-shaped shape. The connection at the upper end of the clip is connected by a buckle. The connection at the lower end of the clip is provided with a connection hole, and a connection bolt is provided in the connection hole.

3. A lifting device for lifting a ship heating coil unit according to claim 1, characterized in that: A lifting lug is provided on the top of the transverse hanger rod, the transverse steel groove is a T-shaped groove, the locking mechanism is a stop bolt and a stop nut cooperating with the stop bolt, the transverse steel groove is provided with upper and lower screw holes, the stop bolt passes through the transverse steel groove and is perpendicular to the transverse steel groove.

4. A method for using a lifting device for lifting a ship heating coil unit according to claim 1, characterized in that: The steps of use are as follows: a. Adjust the spacing of the clips according to the diameter of the heating coil, and clamp the clips evenly on the heating coil; b. Determine the number of longitudinal slide bars according to the number of coils in the heating coil unit, and each longitudinal slide bar is connected to a heating coil; c. Adjust the spacing between the longitudinal slide bars according to the spacing between the heating coils. The range of the spacing between the longitudinal slide bars is the same as the spacing between the heating coils. Adjust the sealing plate slider into place and install the stop nut and stop bolt; d. Determine the length of the longitudinal slide bar, i.e. the large-diameter casing and the small-diameter casing, according to the length of the heating coil unit; e. Lift the adjusted hanger above the heating coil, and fix the clip to the large-diameter and small-diameter casing of the longitudinal slide bar with buckles; f. Lift the heating coil unit.

5. A method for using a lifting device for lifting a ship heating coil unit according to claim 4, characterized in that: In step b, the longitudinal slide bar includes a group of retractable large and small diameter sleeves, and a sealing plate slider is respectively provided at both ends of the longitudinal slide bar, and the sealing plate slider is clamped in the transverse steel groove; the large and small diameter sleeves are made of carbon steel pipes, and the diameter difference between the large and small diameter sleeves is 6-12mm. The large diameter sleeve is provided with an inward-closed folded edge at the connecting end with the small diameter sleeve, and the small diameter sleeve is provided with an outward-expanded folded edge at the connecting end with the large diameter sleeve, and the sealing plate slider is made of carbon steel plate.

6. A method for using a lifting device for lifting a ship heating coil unit according to claim 4, characterized in that: In step a, the heating coil chuck includes a clip and a buckle connected to the clip, the clip is slidably connected to the longitudinal slide rod through the buckle, a rubber gasket is attached to the inner wall of the clip, and a connecting bolt and a connecting nut are provided at the end of the clip; the clip and the buckle are made of stainless steel, the clip is composed of two symmetrical sub-clips assembled in an eight-shaped shape, the connection at the upper end of the clip is connected by the buckle, and the connection at the lower end of the clip is provided with a connecting hole, and a connecting bolt is provided in the connecting hole.

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