GB2537363A

GB2537363A - Protector

Info

Publication number: GB2537363A
Application number: GB1506166.6A
Authority: GB
Inventors: Karl Jones Ian
Original assignee: PULSE PLASTICS Ltd
Current assignee: PULSE PLASTICS Ltd
Priority date: 2015-04-12
Filing date: 2015-04-12
Publication date: 2016-10-19
Anticipated expiration: 2035-04-12
Also published as: GB201506166D0; EP3283399A1; EP3283399B1; WO2016166518A1; GB2537363B; US20180118449A1

Abstract

A coil guard 20 has one part 32 to engage a radially outward facing surface 18 of an annular coil 10 and another part 22 to engage a radially inward facing surface 16 of the annular coil 10. Ideally both parts also engage the axially facing surface of the coil. The parts can be releasably fastened together by cooperating hook and loop pads 29, 40 attached to each part by adhesive. Multiple sizes of the outer part can be provided together.

Description

PRO IECTOR

The present invention relates to a steel coil guard for protecting a steel coil from damage, for example during post-delivery on-site handling. The present invention also provides a method of protecting a steel coil using a steel coil guard according to the present invention.

Steel coils are very heavy objects that are difficult to lift, handle and transport. Overhead cranes with large hooks, large fork lifts and other heavy duty lifting equipment is used to move the coils, both during delivery from supplier to customer and also during on-site movement of the coil post-delivery. Operators of such equipment are skilled in lifting, moving and positioning of heavy loads. However, despite considerable skill and attention, it is common for the surfaces and edges of the coils to suffer damage from contact with the equipment. In particular, the steel coil-eye and coil edges may suffer damage from the chains, hooks or forks passed through the coil during movement. Further damage to the coil may occur due to the coils be scraped or bumped whilst being handled. This may happen as a result of momentary inattention on the part of the lifting equipment operator, poor sight lines between the operator and the steel coil, or accidentally bringing the coil into contact with damaging surfaces such as walls etc. in the immediately vicinity where the steel coil is being handled. Such damage includes dents, impressions and abrasions to the surfaces of the steel coil, which may render the steel wholly or partially unusable, creating expensive waste materials and an associated loss of income.

Often, lifting of the coils involves the use of chains run through the coil-eye and secured tightly with binders. Alternatively, a lifting crane hook may swing out of control or swing wider than intended by the operator when approaching the coil to be moved, thereby scraping the top wall, upper edge and side wall surfaces of the coil before being properly located secured in place within the steel coil-eye or inner diameter. This can result in physical damage to the steel as well as deterioration in the appearance and quality of the steel and potentially rendering it unusable.

One solution to this is to package the steel coil prior to transportation. This is the usual practice when transporting coils from the supplier to the customer. For example, narrow edge protectors are often applied to the top edge of the coil and are held in place by wrapping the coil in plastic. However, these edge protectors are small in size and intended only to protect the coil from damage at the coil edge. They do not cover or protect the surfaces of the steel coil that may be impacted by unintentional contact with heavy duty machinery during handling. Furthermore, as they are held in place relative to the coil by the application of plastic wrapping, they are impractical for use once the coil is on-site and the wrapping removed.

There is therefore a need for a device to protect the steel coil bore, edges and faces from damage during lifting, handling and movement, particularly on-site, post-delivery.

The present invention seeks to address the problems of the prior art.

Accordingly, a first aspect of the present invention provides a coil guard for protecting a steel coil having a belly, a bore and a face located therebetween, the coil guard comprising a first member adapted for engagement with the surface of a coil bore; and a second member adapted for engagement with the surface of a coil belly.

In use, the first member is arranged to shield at least a portion of the coil bore, often referred to as the coil-eye. The main portion of the coil bore surface to protect is the upper surface of the coil bore. This is a part of the coil that is supported by chains passed through the coil bore or a crane hook or a forklift fork when the coil is being handled, and is therefore at significant risk of damage. The first member acts to shield the coil bore upper surface from damage resulting from chains, hooks or forks scraping or carelessly engaging with the coil bore during use. In addition, the first member acts to prevent damage to the surface of the coil bore that may be caused as a result of force applied to the bore surface by chains, hooks or forks under the weight of the coil when being lifted.

In use, the second member is arranged to shield at least a portion of the surface of the coil belly. The main portion of the coil belly surface to protect is the portion of the belly located at 10 o'clock to 2 o'clock i.e, the upper quarter quadrant of the coil. This is another part of the coil that is at significant risk of damage during handling. For example, when a crane hook is swung towards the coil it may accidentally impact the coil if the hook is swinging out of control or the line of sight is obscured between the coil and the crane operator. The second member acts to absorb any impact to the protected coil belly surface, thereby minimising or preventing consequential damage to the coil.

In one embodiment, the first member comprises a coil bore guard for engagement with a coil bore and a coil face guard for engagement with a coil face. By extending over at least a portion of the coil face, the first member is protecting not only a portion of the upper surface of the coil bore, but also an adjacent portion of the surface of the coil face and the coil edge therebetween. The coil edge adjacent the coil bore is an area of the coil that can be damaged during the lifting process on insertion of chain, crane hook or fork-lift fork into the coil bore. Protection of the coil edge adjacent the coil bore by the first member will minimise or prevent impact damage to the coil edge as well as aesthetic scrape or dent damage to the surface of the coil face beneath the coil face guard.

In a further embodiment, the second member comprises a coil belly guard for engagement with the surface of a coil belly and a coil face guard for engagement with the surface of a coil face. By extending over at least a portion of the coil face surface, the second member is protecting not only a portion of the coil belly surface, but also an adjacent portion of the coil face surface and the coil edge therebetween. The coil edge adjacent the coil belly surface is an area of the coil that is at significant risk of being damaged during the movement of the coil if the coil is accidentally bumped against any machinery or masonry during the lifting process. In addition, where the coil is suspended from chain during the lifting process, the chain can damage the coil edge adjacent the coil belly due to force applied to the coil edge by the chain under the weight of the coil itself Preferably, the coil guard further comprises inter-engagement means adapted to engage both the first and second members. In this way, the first and second members can be held spatially relative to one another and the coil. This facilitates ease of application of the protector to the coil, in use In one embodiment, the inter-engagement means comprises a first portion located adjacent the first member and a second portion located adjacent the second member, the first and second portions being adapted for complementary inter-engagement with each other to secure the first member to the second member.

Preferably, the first and second portions comprise complementary inter-engagement portions adapted for reversible inter-engagement with one another to retain the first and second members in place relative to one another. The inter-engagement portions preferably comprise a Velcro® material or similar inter-engaging hooks and loops. However, it is to be appreciated that the complementary inter-engagement portions may comprise a snap-fit fastening, a belt fastening, a buckle fastening, a ratchet fastening or any other engagement means known to the skilled person and suitable for reversibly attaching the first and second portions together.

Preferably, the first and second portions of the inter-engagement means are adhered to the first and second members respectively. In this way, contacting the first and second portions together will result in securing of the first and second members together.

Alternatively, the complementary inter-engagement portions may be adapted for irreversible inter-engagement with one another. For example, a cable tie arrangement or similar irreversible engagement means may be used. When removal of the protector from the coil is required, the inter-engagement means may be simply cut or otherwise damaged to release the protector from the coil and a new inter-engagement means used on the next occasion that the protector is applied to a coil.

Alternatively, the inter-engagement means may comprise a first portion adapted for connection to either of the first or second members. The inter-engagement means may then be connected to itself so as to hold the first and second members in special relationship to both one another as well as hold the protector securely in place relative to the coil.

In one embodiment, the inter-engagement means is adapted to extend through the coil core and around the coil outer surface. In this way, the first and second members will be held securely in place relative to both the coil and to one another.

A third aspect of the present invention provides a method of protecting a steel coil from damage, the steel coil comprising a belly, a bore and a face located therebetween, the method comprising the steps of: a. Providing a coil guard according to any preceding claim; b. Locating the second member adjacent the surface of a coil belly; and c. Locating the first member adjacent the surface of a coil bore.

In one embodiment, the method further comprises the steps of d. providing inter-engagement means adapted to engage both the first and second members; and e. connecting the first and second members to one another using the inter-engagement means In a further embodiment, the inter-engagement means comprises a first portion located adjacent the first member and a second portion located adjacent the second member such that locating the first member adjacent the surface of a coil bore brings the first and second portions of the inter-engagement means into engagement with one another.

A further aspect of the present invention provides a coil guard kit comprising a coil guard according to a first aspect of the present invention, wherein the coil face guard of the second member extends from the coil belly guard for a distance X, and wherein the coil guard kit further comprises an additional second member having a coil face guard that extends from the coil belly guard for a distance X', wherein the distance X' is greater than the distance X. An embodiment of the invention will now be described, by way of example only, and with reference to the accompanying drawings, in which: Figure 1 is a perspective view of a steel coil provided with an embodiment of a coil protector in accordance with a first aspect of the present invention; Figure 2 is a cross-sectional view through the steel coil and coil guard of figure 1, Figure 3 is a cross-sectional view through a smaller steel coil provided with a second embodiment of a coil protector in accordance with a first aspect of the present invention; Figures 4A, 4A' are perspective views of the second member of the coil guard of figure 2 and the coil guard of figure 3, respectively, from a first side, Figures 4B, 4W are perspective views of the second member of the coil guard of figure 2 and the coil guard of figure 3, respectively, from a second opposing side; and Figure 5A is a perspective view of the first member of the coil guard of figures 2 and 3, from a first side; and Figure 5B is a perspective view of the first member of the coil guard of figures 2 and 3, from a second opposing side.

Throughout the figures, the same reference numbers have been used to refer to the same features.

Figure 1 shows a steel coil 10 defining a coil bore 14 having a surface 16. Steel coil 10 further comprises a face 12 and a belly 18. A first core edge 15 is defined at the junction of coil bore surface 16 and coil face 12 and a second core edge 17 is defined at the junction of the surface of coil belly 18 and coil face 12.

Coil guard 20 comprises a first member 22 and a second member 32.

First member 22 is shown in more detail in figures 2, 3 and 4C. First member 22 comprises a coil core guard 24 for location adjacent a portion of the coil core surface 14 and a coil sidewall guard 26 for location adjacent a portion of the coil sidewall 12. Coil core guard 24 and soil sidewall guard 26 are substantially perpendicular to one another and define an edge guard 25 therebetween, such that, in use, edge guard 25 is located adjacent first core edge 15.

First member 22 further comprises Velcro® type loop pads 29 adhered to the surface of sidewall guard 26.

Figures 1, 2, 4A and 4B show a large version of the second member 32 and figures 3, 4A' and 4B' show a smaller version -the selection of which version to use will depend on the diameter of the steel coil to be protected. Larger coils i.e, coils with larger diameters of for example, 8 feet, will require the larger version of the second member in order that the second member may extend sufficiently across the sidewall 12 to still overlap with first member 22. However, the larger version will be too big to be a good fit on smaller coils i.e. coils with a smaller diameter of for example, 2 feet, and so a smaller version of the second member 22 may be used instead. These two versions of second member 32 are intended for use on steel coils with a standard range of coil diameters. However, it is to be appreciated that first and second members 22, 32 may be of any suitable dimensions to allow their use with steel coils of various selected diameters.

Conventional steel coils are manufactured with standard coil bore sizes, with the coil bore diameter being 406 mm (16 inches), 508 mm (20 inches) or 610 mm (24 inches). These sizes correspond to the dimensions of the machinery etc. that handles the coils during on-site processing.

For example, the dimensions of the first member 22 that should be used will depend on the diameter of the coil bore i.e. the first member may correspond to a bore size of 406 mm, 508 mm or 610 mm, depending on the requirement of the customer and the dimensions of their coil handling/processing equipment. However, the dimension of the second member 32 selected for use is selected depending on the diameter of the coil -the second member 32 selected needs to extend sufficiently across the coil sidewall to allow overlap with the first member 22. However, it cannot be too big as it would interfere with the fitting of the second member 22 if it extended past the first core edge 15.

Second member 32 comprises a coil belly guard 34 for location adjacent a portion of the coil outer surface 16 and a coil sidewall guard 36 for location adjacent a portion of the coil sidewall 12. Coil belly guard 34 and soil sidewall guard 36 are substantially perpendicular to one another and define an edge guard 35 therebetween, such that, in use, edge guard 35 is located adjacent second core edge 17 As can be seen in figures 4B, 4B', second member 32 is further provided with Velcro® style hook pads 40 adhered to the outer surface of coil face guard 36 i.e. on the opposite surface to that contacting the coil face 12, in use.

In use, second member 32 is positioned in place relative to coil 10, as shown in figures 2 and 3 such that coil belly guard 34 contacts coil belly 18, coil edge guard 35 contacts coil edge 17 and coil face guard 36 contact coil face 12, with Velcro like pads 40 facing away from coil 10. Second member 32 should be positioned on coil 10 is the upper quadrant, sometimes referred to as the 10-to-2 o'clock position (making reference to the time on an analogue clock face), as shown in figure 1. This quadrant of the coil 10 is the part of the coil 10 that is exposed to the greatest likelihood of damage during handling of the coil post-delivery. Once second member 32 is in place, first member 22 is positioned in place relative to coil 10, as shown in figures 2 and 3, such that coil bore guard 24 is located adjacent coil bore 14, coil edge guard 25 is located adjacent coil edge 15 and coil face guard 26 is located adjacent coil face 12. Once in place, Velcro type loop pads 29 make contact with and inter-engage with corresponding Velcro type hook pads 40 of second member 32, thereby securing first member 22 to second member 32, and securing both members in place relative to coil 10.

Once secured in place, the coil may be safely moved using conventional heavy duty lifting equipment. The coil guard 20 protects the coil belly 18, coil face 12 and coil bore 14 from damage from chain, crane hook or fork-lift fork impact, or impact of the coil 10 against any surrounding surfaces during the handling process.

Once the coil 10 has been moved to the desired location and the heavy duty lifting equipment removed from the coil bore 14, the coil guard 20 may be easily removed from the coil 10 by applying force to the first member 22 to loosen the attachment between loop pads 29 of first member 22 and hook pads 40 of second member 32, thereby allowing first member 22 to be disengaged from second member 32 and removal from coil 10. Second member 32 can then be simply lifted away from coil 10, leaving the coil in an undamaged state and available for onward processing, while the coil guard 20 may be easily reused to protect another coil 10 requiring handling.

Plastic is not normally used as a material for protecting coils as it is often not strong enough to bear the weight and stresses is would be exposed to during the coil handling process. However, as can be seen from the figures, first and second members 22, 32 of coil guard 20 are provided with ribs. These ribs 60 serve to strengthen the structure of the first and second members such that they are strong enough to use to protect the coil 10 during the handling process without cracking or disintegrating under the applied stresses. This allows a relatively light weight two part plastic coil guard to be used during the handling process that is easily lifted and manipulated into place by a single operator, without strain to the operator.

Coil guard 20 may comprise any suitable plastic, including, but notlimited to high density polyethylene (HDPE) or polypropylene (PP).

In addition, the ease with which the second member 32 and, subsequently, the first member 22 may be accurately fitted to the coil 10 during use makes the process of preparing a coil 10 for handling efficient and straightforward. Further, the use of large hook and loop pads to connect the first and second members to one another to secure them in place relative to the coil allows for adjustment of the engagement between the first and second members 22, 32 to accommodate variation in the diameters of the coils 10 being handled. It will be appreciated that the first and second members 22, 32 may be engaged such that the distance between coil bore &mud 24 and coil belly guard 34 may differ depending on the level of overlap between loop pads 29 and hook pads 40 on engagement of the first and second members 22, 32.

A well-known problem experience in the prior art when using any type of plastic protector adjacent the coil face 12 is that any rubbing of the plastic against the coil face 12 during handling of the coil 10 can result in a layer of plastic rubbing off on the edges of the coil 10. This is particularly undesirable contamination of the steel of the coil 10, is detrimental to the ongoing processing of the steel and can render the coil unusable, thereby leading to expensive wastage of steel.

However, in the case of the present application, lifting of the coil 10 with a fitted coil guard 20 only serves to solidly secure the first member 22 in place relative to the second member 32 and to securely retain the coil guard 20 in place relative to the coil 10 due to the weight of the coil 10 on the coil bore guard 24 of first member 22 during lifting of the coil 10. This means that there is no rubbing between the coil face guards 26, 36 of first and second members 22, 32, respectively, and therefore no undesirable deposition of plastic residue on the coil face 12 during handling of the coil 10 when coil guard 20 is in place.

Although aspects of the invention have been described with reference to the embodiment shown in the accompanying drawings, it is to be understood that the invention is not limited to the precise embodiment shown and that various changes and modifications may be effected without further inventive skill and effort. For example, it will be appreciated that where the coil is lifted using a fork-lift fork, a coil guard need only be fitted to one side of the coil i.e. the side of the coil from which the fork approaches the coil bore. However, if a chain is fed through the coil bore for lifting or a crane hook is inserted through the coil bore then it may be desirable to fit a coil guard according to the present invention to each side of the coil in order to protect the edges, belly and faces of the coil on both sides from damage during handling.

Claims

CLAIIVIS: A coil guard for protecting a steel coil having a belly, a bore and a face located therebetween, the coil guard comprising a first member adapted for engagement with the surface of a coil bore; and a second member adapted for engagement with the surface of a coil belly.
2. A coil guard according to claim 1, wherein the first member comprises a coil bore guard for engagement with a coil bore and a coil face guard for engagement with a coil face.
3. A coil guard according to claim 1 or claim 2, wherein the second member comprises a coil belly guard for engagement with the surface of a coil belly and a coil face guard for engagement with the surface of a coil face.
4. A coil guard according to any preceding claim, wherein the coil guard further comprises inter-engagement means adapted to engage both the first and second members.
5. A coil guard according to claim 4, wherein the inter-engagement means comprises a first portion located adjacent the first member and a second portion located adjacent the second member, the first and second portions being adapted for complementary inter-engagement with each other to secure the first member to the second member.
6. A coil guard according to claim 5, wherein the complementary inter-engagement portions are adapted for reversible inter-engagement with one another.
7 A coil guard according to claim 5 or claim 6, wherein the inter-engagement means comprises inter-engaging hooks and loops.
8. A coil guard according to claim 5, wherein the first and second portions of the inter-engagement means are adhered to the first and second members respectively.
9. A method of protecting a steel coil from damage, the steel coil comprising the steps of: a. Providing a coil guard according to any preceding claim; b. Locating the second member adjacent the surface of a coil belly; and c. Locating the first member adjacent the surface of a coil bore.
10. A method according to claim 10 further comprising the steps of: d. Providing inter-engagement means adapted to engage both the first and second members; and e. Connecting the first and second members to one another using the inter-engagement means.
11. A method according to claim 10, wherein the inter-engagement means comprises a first portion located adjacent the first member and a second portion located adjacent the second member such that locating the first member adjacent the surface of a coil bore brings the first and second portions of the inter-engagement means into engagement with one another.
12. A coil guard kit comprising a coil guard according to any one of claims Ito 8, wherein the coil face guard of the second member extends from the coil belly guard for a distance X, and wherein the coil guard kit further comprises an additional second member having a coil face guard that extends from the coil belly guard for a distance X', wherein the distance X' is greater than the distance X.