WO1995024567A1 - Bracket for suspending a chain - Google Patents
Bracket for suspending a chain Download PDFInfo
- Publication number
- WO1995024567A1 WO1995024567A1 PCT/AU1995/000114 AU9500114W WO9524567A1 WO 1995024567 A1 WO1995024567 A1 WO 1995024567A1 AU 9500114 W AU9500114 W AU 9500114W WO 9524567 A1 WO9524567 A1 WO 9524567A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- bracket
- chain
- slots
- links
- body portion
- Prior art date
Links
- 230000004044 response Effects 0.000 claims description 3
- 230000008878 coupling Effects 0.000 claims description 2
- 238000010168 coupling process Methods 0.000 claims description 2
- 238000005859 coupling reaction Methods 0.000 claims description 2
- 230000001419 dependent effect Effects 0.000 claims 1
- 238000005065 mining Methods 0.000 description 6
- 239000011435 rock Substances 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 230000008901 benefit Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16G—BELTS, CABLES, OR ROPES, PREDOMINANTLY USED FOR DRIVING PURPOSES; CHAINS; FITTINGS PREDOMINANTLY USED THEREFOR
- F16G15/00—Chain couplings, Shackles; Chain joints; Chain links; Chain bushes
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F17/00—Methods or devices for use in mines or tunnels, not covered elsewhere
- E21F17/02—Suspension devices for tubes or the like, e.g. for ventilating ducts
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L3/00—Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets
Definitions
- the present invention relates to a bracket for suspending a chain, cable or the like elongate member which has a cross-sectional profile that varies along the length of the member.
- the present invention relates particularly to a bracket for suspending a chain.
- a particular application of the bracket is in underground mining or tunnelling where services for a mine, such as, but not limited to, ventilation ducts, electrical cables, water pipes, air pipes, and gas extraction ducts, are usually supported from the roof of the mine in order to minimise the possibility of damage to the services.
- services for a mine such as, but not limited to, ventilation ducts, electrical cables, water pipes, air pipes, and gas extraction ducts
- a known method of supporting services in underground mines is by means of chains which are suspended from exposed ends of rock bolts, -straps, mesh, bearing plates, or other members that are secured to the mine roof for other purposes.
- An object of the present invention is to provide a support arrangement for services, and more particularly a bracket for use as part of the support arrangement, which is an improvement over known support arrangements.
- a bracket for suspending a chain or the like member comprising a body portion and a pair of slots formed in the body portion for receiving links of the chain that are separated by one or more intermediate links.
- the chain can be securely locked to the bracket when two links that are separated by one or more intermediate links are positioned in the slots.
- the body portion and the slots be formed so that, when one link is in each slot, and a force is applied to an end of the chain, the intermediate link or links that separate the links in the slots contacts the body portion and thereby prevents the links in the slots sliding from the slots to release the chain from the bracket in response to the applied force.
- a preferred application of the bracket is in -underground mining to support a chain from the roof of an underground mine as part of a support arrangement for services, such as water pipes or conveyors for the mine.
- pairs of the brackets are supported from the roof of the mine at spaced intervals along the required path for the services and a chain is suspended from the brackets of each pair and the services are cradled by the chains.
- the bracket comprise a hook and that (b) W-straps, bearing plates, or other members which are secured to the underground mine roof in the normal course of events comprise an opening for receiving the hook so that the brackets used to suspend the chains can be supported from the roof of the mine by the W-straps, bearing plates or other existing members.
- the body portion comprises a central member which separates the slots.
- the body portion comprises two parallel outer members, one on each side of the central member, with the spaces between each outer member and the central member defining the slots.
- a chain hanger for use in supporting services in an underground mine comprising, in combination, a plurality of the brackets of the present invention as described in the preceding paragraphs, and W-straps, bearing plates, or other members adapted to be secured to a roof of an underground mine and each having one or more openings for receiving the hooks of the brackets.
- a support arrangement for services in an underground mine comprising, in combination, a plurality of the chain hangers described in the preceding paragraph, and a plurality of chains for use with the chain hangers to cradle services.
- Figure 1 is a series of front, side, and perspective views of one preferred embodiment of a bracket in accordance with the present invention
- Figure 2 is a series of front, side, and perspective views of another preferred embodiment of a bracket in accordance with the present invention.
- Figure 3 is a series of front, side, and perspective views of another preferred embodiment of a bracket in accordance with the present invention.
- Figure 4 is a part-sectional, part-side view of a rock bolt assembly secured to the roof of an underground mine with a bearing plate positioned between the nut of the rock bolt assembly and the roof of the mine and two brackets of the type shown in Figure 1 coupled to the bearing plate with each bracket suspending a chain; and
- Figure 5 is a view of the lefthand side (shown in Figure 4 in the direction of the arrow A in Figure 4) with the bearing plate removed in order to simplify the figure.
- bracket 3 shown in Figures 1, 2, and 3 have the same general configuration and the same reference numerals are used in the Figures to denote the same structural features.
- the brackets 3 are particularly suited for use in underground mining to support chains from the roof of an underground mine as part of a support arrangement for services, such as water pipes or conveyors, for the mine.
- services such as water pipes or conveyors
- brackets 3 are supported from the roof of the mine at spaced intervals along the required path for the services, by coupling the brackets 3 to W- straps, bearing plates, or other members that are secured to the mine roof in the normal course of a mining operation, and
- a chain is suspended from the brackets 3 of each pair and the services are cradled by the chains.
- each bracket 3 is formed advantageously from a plate and comprises a central prong 7 and two outer prongs 9 which extend in a parallel arrangement from an interconnecting web 11.
- each bracket 3 is longer than the outer prongs 9 and is folded over at its free end to form a hook 13 to couple the bracket 3 to a W-strap, bearing plate, or other support member.
- the hooks 13 of two brackets 3 of the type shown in Figure 1 are shown received in openings 21 in a bearing plate 23 that is secured to a mine roof 61 by means of a rock bolt assembly 63 so that the brackets 3 are supported from the roof 61.
- the bearing plate 23 is of a type described in International application PCT/AU94/00419 (WO95/03477) of the applicant, and the disclosure in the International application is incorporated herein by reference. It can readily be appreciated that the hooks 13 of the brackets 3 could be received in openings formed in any suitable members that are secured to a mine roof.
- the hook 13 may include a locking pin 71.
- each bracket 3 comprises a pair of slots 15 which are formed by the gaps between the central prong 7 and each outer prong 9.
- the dimensions of the slots 15 are selected to receive, in use, the links 17 of a chain 19.
- the width W of the central prong 7 of the brackets 3 of the type shown in Figure 1 is selected so that, in use, the links 17 that are received in the slots 15 are separated by a single link 17a (or a multiple of the links) .
- the chain 19 can be suspended from the bracket 3 by wrapping an end section of the chain 19 around the central prong 7 of the bracket 3 and inserting the links 17 in the slots 15 with the interconnecting link 17a (or links) extending across the central prong 7.
- the force F causes the interlocking link 17a (or links) to contact the outer prong 9 on the lefthand side of Figure 5 and this contact prevents the interconnecting link 17a (or links) sliding into and through the slot 15.
- the combination of the structure of the bracket 3 and the structure of the chain 19 enables the chain 19 to be securely locked to the bracket 3.
- bracket 3 avoids the necessity to feed the chain 19 through the relatively small keyhole opening which characterises the arrangement of Kwadcorp complete application 28615/92. With the bracket 3, all that is required is to loop the chain 19 around the central prong 7 and to adjust the position of the chain 19 relative to the bracket 3 until the links are received in the slots 15.
- each preferred embodiment of the bracket 3 comprises a pair of slots 15 and therefore is designed to suspend a single chain 19, it can readily be appreciated that the present invention is not restricted to such an arrangement and extends to brackets which can support a plurality of chains 19.
- a suitable form of such a bracket may comprise a plurality of pairs of slots.
- each preferred embodiment of the bracket 3 is a separate member which is formed with a hook 13 that is adapted to co-operate with openings 21 in bearing plates 23 or other members, such as W-straps, that are secured to a mine roof
- the present invention is not restricted to such an arrangement and extends to arrangements in which the bracket is formed integrally with the bearing plates or other such members.
- bracket 3 is described as being suitable to suspend chains 19, it can readily be appreciated that the present invention is not restricted to this application and the bracket of the present invention may be used to suspend any elongate member that has a cross-sectional profile that varies along the length of the member.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Hooks, Suction Cups, And Attachment By Adhesive Means (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP95911161A EP0752069A4 (en) | 1994-03-08 | 1995-03-08 | Bracket for suspending a chain |
AU18860/95A AU683360B2 (en) | 1994-03-08 | 1995-03-08 | Bracket for suspending a chain |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AUPM4294 | 1994-03-08 | ||
AUPM4294A AUPM429494A0 (en) | 1994-03-08 | 1994-03-08 | A bracket |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1995024567A1 true WO1995024567A1 (en) | 1995-09-14 |
Family
ID=3778910
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/AU1995/000114 WO1995024567A1 (en) | 1994-03-08 | 1995-03-08 | Bracket for suspending a chain |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0752069A4 (en) |
AU (1) | AUPM429494A0 (en) |
WO (1) | WO1995024567A1 (en) |
ZA (1) | ZA951919B (en) |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0008966A1 (en) * | 1978-08-08 | 1980-03-19 | STAS SOCIETE TECHNIQUE D'ACCESSOIRES SPECIALISES Société anonyme dite: | Hook for a link chain |
DE3225115A1 (en) * | 1981-01-07 | 1984-01-12 | Müller & Borggräfe KG, 5820 Gevelsberg | Roadway support for mining and tunnelling |
AU6611986A (en) * | 1985-12-03 | 1987-06-04 | Arnall's Engineering Pty. Limited | Service line roof strap |
AU2861592A (en) * | 1991-10-16 | 1993-05-21 | Buffier, Brian Lesley Joseph | Support device for services |
WO1994019580A1 (en) * | 1993-02-22 | 1994-09-01 | Fioris Pty Limited | Hanger bracket |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3191759A (en) * | 1962-04-04 | 1965-06-29 | Goodman Mfg Co | Suspension assemblies for flexible belt conveyors |
US3580626A (en) * | 1969-02-14 | 1971-05-25 | Luell Hilburn | Clamping fixture for use in a hoisting and lifting device |
DE2728763A1 (en) * | 1977-06-25 | 1979-01-18 | Erlau Ag Eisen Drahtwerk | Haulage or lifting link chain - has two or more locking recesses at angle in link plate |
GB2092257B (en) * | 1981-02-03 | 1984-12-05 | Harding John | Chain sling |
EP0710320A4 (en) * | 1993-07-26 | 1999-07-28 | Bhp Eng Pty Ltd | A bearing plate assembly |
-
1994
- 1994-03-08 AU AUPM4294A patent/AUPM429494A0/en not_active Abandoned
-
1995
- 1995-03-08 WO PCT/AU1995/000114 patent/WO1995024567A1/en not_active Application Discontinuation
- 1995-03-08 EP EP95911161A patent/EP0752069A4/en not_active Withdrawn
- 1995-03-08 ZA ZA951919A patent/ZA951919B/en unknown
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0008966A1 (en) * | 1978-08-08 | 1980-03-19 | STAS SOCIETE TECHNIQUE D'ACCESSOIRES SPECIALISES Société anonyme dite: | Hook for a link chain |
DE3225115A1 (en) * | 1981-01-07 | 1984-01-12 | Müller & Borggräfe KG, 5820 Gevelsberg | Roadway support for mining and tunnelling |
AU6611986A (en) * | 1985-12-03 | 1987-06-04 | Arnall's Engineering Pty. Limited | Service line roof strap |
AU2861592A (en) * | 1991-10-16 | 1993-05-21 | Buffier, Brian Lesley Joseph | Support device for services |
WO1994019580A1 (en) * | 1993-02-22 | 1994-09-01 | Fioris Pty Limited | Hanger bracket |
Non-Patent Citations (1)
Title |
---|
See also references of EP0752069A4 * |
Also Published As
Publication number | Publication date |
---|---|
ZA951919B (en) | 1996-06-14 |
AUPM429494A0 (en) | 1994-03-31 |
EP0752069A1 (en) | 1997-01-08 |
EP0752069A4 (en) | 1998-01-07 |
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