GB2234769A - A unit compressing a gallery support member and an attachment member - Google Patents
A unit compressing a gallery support member and an attachment member Download PDFInfo
- Publication number
- GB2234769A GB2234769A GB9013604A GB9013604A GB2234769A GB 2234769 A GB2234769 A GB 2234769A GB 9013604 A GB9013604 A GB 9013604A GB 9013604 A GB9013604 A GB 9013604A GB 2234769 A GB2234769 A GB 2234769A
- Authority
- GB
- United Kingdom
- Prior art keywords
- support member
- unit
- locking
- gallery support
- formation
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 230000015572 biosynthetic process Effects 0.000 claims abstract description 19
- 238000005065 mining Methods 0.000 claims abstract description 6
- 238000003780 insertion Methods 0.000 claims description 2
- 230000037431 insertion Effects 0.000 claims description 2
- 238000000034 method Methods 0.000 claims 1
- 241000251131 Sphyrna Species 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 238000007493 shaping process Methods 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
Classifications
-
- 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
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/14—Lining predominantly with metal
- E21D11/18—Arch members ; Network made of arch members ; Ring elements; Polygon elements; Polygon elements inside arches
- E21D11/20—Special cross- sections, e.g. corrugated
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Connection Of Plates (AREA)
- Clamps And Clips (AREA)
Abstract
A unit comprising a gallery support member (1) and an attachment member (2) for mining aids. The gallery support member (1) has a trough-shaped profile cross-section consisting of two opposing flanges (3) and a profile base (4). The attachment member (1) locks positively on to the gallery support member (2). On the far side from the trough of the base (4) there is provided a shaped locking formation (5), which is free from holes and extends over at least part of the length of the gallery support member (1). The attachment member (2) has at least one locking counter-formation 6, which can be locked into the locking formation (5) on the far side from the trough. <IMAGE>
Description
of A UNIT COMPRISING A GALLERY SUPPORT MEMBER AND AN ATTACHMENT ME MB ER
This invention relates to a unit comprising a gallery support member and an attachment member for mining aids#, in which the gallery support member has a trough-shaped profile cross-section consisting of two opposing flanges and a baser whilst the attachment member locks positively on to the gallery support member.
In a unit known f rom practice to which the invention relates, the positive locking of the attachment member on to the gallery support member is effected by means of longitudinally extended holes or slits running in the longitudinal direction in the gallery support member, together with threaded hammerhead bolts which can be inserted into the holes of slits, turned through 900 and tightened into place with the aid of a connector of the nut type. The mining aids which can be assembled on to the attachment member includes, for examplep parts of a single-rail overhead suspension tracky hooks, brackets, rollers and the like.
ordinary gallery support members are known as regular profilesr and are standardised. The same applies to gallery support members adapted in the manner just described, for the acceptance of positively locked attachment members. The holes or slits are formed in such a manner that they will not impair the bending strengthr in the sense of lowering it to bel ow the threshold value specified in the standard. However. there can be no denying that material is removed in the vicinity of the holes or slits,. and that the surface moment of inertia is significantly lowered thereby. This can have adverse effects under loads which tend to destabilise the assembly, including buckling loads, and can impair the safety of the system. There is no guarantee against sudden loss of stability under extreme loading conditions.
The object of the invention is to modify and improve a unit of the type initially described so that an attachment can be positively locked into plate in a simple manner without necessarily entailing serious reduction in the surface moment of i ner ti a.
Accoridng to the present invention there is provided a unit comprising a gallery support member and an attachment member for mining aids, wherein the gallery support member has a trough-shaped prof ile cross-section consisting of two opposing flanges and a base, whilst the attachment member locks positively on to the gallery support member, with the far side of the trough of the prof ile base provided with a shaped locking f ormation which is free from holes and extends over at least part of the length of the gallery support memberr whilst the attachment member has at least one locking counter-formation, which can be locked into the locking formation on the far side from the trough.
In one preferred embodiment of the inventiont the locking formation is shaped whilst rolling the gallery support member. In this case,, it extends over the entire length of the gallery support member on to which the attachment member can be positively locked.
The invention arises f rom the realisation that k It positive locking between the gallery support member and the attachment member does not necessarily involve forming holes th er ei n. On the contraryt a positive locking formation can be produced by shaping, and shaping can be effected without significantly reducing the surface moment of inertia. This is outstandingly the case when, as in a preferred embodiment of the invention, the locking formation is shaped as a dovetail groove or a dovetail rib. The prof iling of the positive locking formation actually contributes further to the surface moment of inertia.
The positive locking counter-formation can be shaped in various ways. one embodiment still within the scope of the invention is characterised in that the locking counterformation is shaped as a hammerhead f ormation which can be swivelled af ter insertion in the groove and tightened into place with the aid of a connector of the nut type. However, it is equally possible to adapt the system so that the locking counter-formation has two clamping cheeks which can be tightened on to the dovetail rib.
In a preferred embodiment of the invention#, the gallery support member is developed from a regular profile in the sense initially described. In the embodiment in which the gallery support member can be slid some distance into the next member and connected thereto by clips allowing some overlapping, the invention teaches that the said next member is adapted as a regular prof ile and the gallery support member fitted with the positive locking formation is matched to the said regular profile.
1 The invention will now be described in greater detail, by way of example, with reference to the accompanying schematic drawings in which:Figure 1 is a cross-section through the gallery support member of a unit of the invention; Figure 2 shows the attachment member associated with the gallery support member forming the object of Figure 1; Figure 3 is a corresponding view to Figure 1 of another embodiment of the gallery support member in the unit of the invention; Figure 4 shows the attachment member associated with the object of Figure 3, in two different functional settings; Figure 5 is a corresponding cross-section to Figure 1 through the gallery support member having a positive locking formation. slid into an associated regular member; and Figure 6 is a corresponding cross-section to Figure 3 through the gallery support member having a positive locking f ormationy slid into an associated regular member.
The two basic components of theunitof theinvention, as shown in the Figuresp are firstly mine gallery support members 1 and secondly attachment members 2 for mining aids. Figures 1 and 3 show that the gallery support member 1 has a trough-shaped profile cross-section consisting of two opposing flanges 3 and a base 4. The attachment member 2 locks positively on to the gallery support member 1. Accordingly a shaped locking formation 5, is provided on the far side of the base 4 f rom the trough, which f ormation 5 is f ree f rom holes. this locking formation 5 extends over at least part of the h length of the gallery support member 1. it pr ef er ably extends over the entire length, so that it can be shaPed whilst rolling the gallery support member 1. The attachment member 2 has at least one locking counter-f ormation 69, which can be locked into the locking formation 5 on the far side from the trough. This can be ascertained by a comparative examination of Figures 1 and 2, and/or Figures 3 and 4.
In the embodiment shown in Figures 1 and 2r the locking formation 5 is adapted as a dovetail groove. The locking counter-f ormation 6 is of the haitkmerhead type# to be turned through 900 in the groove and tightened into place with the aid of a connector 7 of the nut type. In the embodiment shown in Figures 3 and 4, the locking formation 5 is adapted as a dovetail rib. Correspondingly, the locking counterformation 6 has two clamping cheeks which can be tightened on to the dovetail rib.
Figures 5 and 6 are cross-sectional views of a gallery support member 1 of the type described#, having a shaped locking formation _5 which can be slid some distance into the next gallery support member 8. It could be connected thereto by clips allowing some overlapping,, with frictional dragon the prof ile flanges. The next gallery support member 8 is shown to be a standardisedr regular profile. The gallery support member 1 carrying the shaped locking formation 5 is matched to this regular profile. It is obvious that pairs of gallery support members 1 of the invention can be overlapped so as to provide some yield.
k
Claims (8)
1. A unit comprisinga gallery support member and an attachment member for mining aids, wherein the gallery support member has a trough-shaped profile cross-section consisting of two opposing flanges and a base, whilst the attachment member locks positively on to the gallery support member, with the far side of the trough of the prof ile base provided with a shaped locking formation which is free from holes and extends over at least part of the length of the gallery support member, whilst the attachment member has at least one locking counter-formation, which can be locked into the locking f ormati on on th e f ar si de f rom th e tr ough.
2. A unit as in Claim 1, wherein the locking formation is shaped as a dovetail groove.
3. A unit as in Claim 1, wherein the locking formation is shaped as a dovetail rib.
4. A unit as in Claim 2, wherein the locking counter-formation is shaped as a hammerheady which can be swivelled through 900 after insertion in the groove and tightened into palce with the aid of a connector of the nut type.
5. A unit as in Claim 3, wherein the locking counter-formation has two clamping cheeks which can be tightened on to the dovetail rib.
6. A unit as in any of Claims 1 to 5, in the embodiment in which the gallery support member can be slid some distance into the next member and connected thereto by clips allowing some overlapping, with the said next gallery 1 A 0 4.
support member adapted as a regular profile and the member fitted with the positive locking member is matched to the said regular prof ile.
7. A unit substantially as hereinbefore described with reference to Vigures 1 and 2.
8. A unit substantially as hereinbefore described with reference to Figures 3 and 4.
Published 1991 at 7be Patent OMce. State House. 66/71 High Holborn, londonWCIR47?. Further copies may be obtained from Saks Branch. Unit 6. Nine Mile Point. Cwmfelinfach. Cross Keys. Newport, NPI 7HZ. Printed by Multiplex techniques ltd. St Mary Cray. Kent
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19893926450 DE3926450C1 (en) | 1989-08-10 | 1989-08-10 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| GB9013604D0 GB9013604D0 (en) | 1990-08-08 |
| GB2234769A true GB2234769A (en) | 1991-02-13 |
| GB2234769B GB2234769B (en) | 1993-03-10 |
Family
ID=6386873
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB9013604A Expired - Fee Related GB2234769B (en) | 1989-08-10 | 1990-06-18 | A unit comprising a gallery support member and an attachment member |
Country Status (2)
| Country | Link |
|---|---|
| DE (1) | DE3926450C1 (en) |
| GB (1) | GB2234769B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU202643U1 (en) * | 2020-10-05 | 2021-03-01 | Акционерное общество "ЕВРАЗ Объединенный Западно-Сибирский металлургический комбинат", АО "ЕВРАЗ ЗСМК" | SPECIAL PROFILE |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE813391C (en) * | 1949-03-05 | 1951-09-13 | Karl Theodor Jasper | Iron pit support in the form of polygon support |
| DE1212022B (en) * | 1958-08-16 | 1966-03-10 | Bochumer Eisen Heintzmann | Set of congruent, trough-shaped pit lining profiles, especially for ring or arched line lining |
| DE3616908A1 (en) * | 1986-05-20 | 1987-12-03 | Becker Grubenausbautechnik Gmb | Connection of support setting elements, consisting of sheet steel, for underground mining roadways |
-
1989
- 1989-08-10 DE DE19893926450 patent/DE3926450C1/de not_active Expired - Lifetime
-
1990
- 1990-06-18 GB GB9013604A patent/GB2234769B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| GB2234769B (en) | 1993-03-10 |
| DE3926450C1 (en) | 1991-04-11 |
| GB9013604D0 (en) | 1990-08-08 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PCNP | Patent ceased through non-payment of renewal fee |
Effective date: 19980618 |