CA1225681A - Chain components - Google Patents
Chain componentsInfo
- Publication number
- CA1225681A CA1225681A CA000426078A CA426078A CA1225681A CA 1225681 A CA1225681 A CA 1225681A CA 000426078 A CA000426078 A CA 000426078A CA 426078 A CA426078 A CA 426078A CA 1225681 A CA1225681 A CA 1225681A
- Authority
- CA
- Canada
- Prior art keywords
- link
- crown
- portions
- shackles
- chain
- 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.)
- Expired
Links
Landscapes
- Load-Engaging Elements For Cranes (AREA)
Abstract
ABSTRACT
"Improvements in or Relating to Chain Components".
A chain sling assembly (Fig.13) includes a main link 2 provided with two separable connector links 14 each carrying two shackles 50 and shortening clutches 66. Each connector link 14 has a first portion 16 profiled to co-act with the main link 2 and a second portion 18 profiled to co-act with the shackles 50, hubs 42 of the first portion 16 extending externally of hubs 44 of the second portion 18 and being connected with a pin 20.
The shortening clutches permit adjustment of the free length of a fall portion of chain 83 by engaging a link 81 in a jaw portion 76.
"Improvements in or Relating to Chain Components".
A chain sling assembly (Fig.13) includes a main link 2 provided with two separable connector links 14 each carrying two shackles 50 and shortening clutches 66. Each connector link 14 has a first portion 16 profiled to co-act with the main link 2 and a second portion 18 profiled to co-act with the shackles 50, hubs 42 of the first portion 16 extending externally of hubs 44 of the second portion 18 and being connected with a pin 20.
The shortening clutches permit adjustment of the free length of a fall portion of chain 83 by engaging a link 81 in a jaw portion 76.
Description
DESCRIPTION
This invention relates to chain components and, more particularly, to a chain sling assem~ly.
Such chain sling assem~lies include a main link to which is attached a plurality of secondary 5. links and shackles carrying lengths of chain furnished with hook or similar components appropriate to a load to he slung.
Hitherto, it has heen the practice to position the secondary links on the main links 10. during the forming process prior to welding up either the main or the secondary link.
According to the present invention there is provided a chain sling assemhly having a main link and, as secondary links, separahle connector 15. links, each connector link carrying two shackles providing connections for lengths of sling chain.
The invention will now he descri~ed, hy way of example, with reference to the accompanying, partly diagrammatic, drawings of the components of 20. a chain sling assem~ly in which:-Figure 1 is a portion of an elongate mainlink symmetric hoth a~out major and minor axes, the cross-sections at those axes ~eing indicated;
Figure 2 is a front elevation of a separa~le 25. connector link;
12~5f~
Figure 3 is a side elevation of the separahle connector link Figure 4 is a front elevation of a shackle;
Figure 5 is a sectional elevation of the 5. shackle taken on the line V-V of Figure 4;
Figure 6 is a front elevation of a shortening clutch;
Figure 7 is a sectional elevation of the shortening clutch taken on the line VII-VII of 10. Figure 6;
Figure 8 is a sectional plan view of the shortening clutch taken on the line corresponding to the line VIII-VIII in Figure 7;
Figure 9 is a front elevation of an 15. alternative form of shortening clutch;
Figure 10 is a sectional elevation of the alternative form of shortening clutch taken on the line X-X of Figure 9;
Figures 11 and 12 are sectional plan views 20. respectively taken on the lines corresponding to the lines XI-XI and XII - XII in Figure 10 and Figure 13 is an elevation of the components connected together to form a chain sling assemhly, one of connector link and associated 25. components heing omitted for the sake of clarity.
1~25~81 As shown in Figure 1, the elongate main link 2 has crown portions 4 (part only of one of which is shown) of generally semi-circular form connected hy parallel extending side portions 6 5. (part only of one of which is shown). The crown portions 4 are formed with inner and outer, circumferentially extending, flanges 8 and 10 connected hy a weh 12 extending parallel to a diametrical plane lying centrally of the crown 10. portions 4 as descrihed in our co-pending application ~o.PCT/GB 82/00287.
As shown in Figures 2 and 3, each connector link 14 includes two half-link,portions 16, 18 connected together hy means of a pin 20. Each 15. half-link portion 16, 18 includes a crown portion 22, 24 respectively formed with an inner and an outer circumferentially extending flange 26, 28 and 30, 32 connected hy a weh 34, 36 extending parallel to a diametrical p~ane lying centrally of 20. the crown portions 22, 24 and parallel side limhs 38, 40 extending from the crown. The side limhs 38, 40 have a thickness equal to that of the wehs 34, 36 of the crown portions 22, 24 and progressively increase in width in the diametrical 25. plane lying centrally of the crown portions toward huhs 42, 44 which are hored to receive the connecting pin 20. The huhs 42, 44 are of stepped form, the huhs 42 on the half-link portion 16 heing cut away over an inner portion to 30. accommodate the huhs 44 on the other half-link portion 18 which are cut away over an outer portion, therehy permitting the hores to he aligned to receive the connecting pins 20. A
retaining clip 46 is positioned on-the pin 20 35~ intermediate the inner faces of the huhs 44 to retain the pin in position.
lZ25~i81 The half-link portion 16 is profiled to seat on the main link 2 with the inner surface of the half-link portion making a close fit with the main link, whilst the other half-link portion 18 5. is profiled to receive crown portions of two shackles 50, one of which is shown in Figures 4 and 5.
Each shackle 50 is formed with a pair of lO. side limhs 52 extending from the crown portions 48 to jaw huhs 54 each formed with a hore 56 for a shackle pin (not shown) and a hore 58 for a retaining pin (not shown). The crown portion 48 is formed with inner and outer circumferentially 15. extending, flanges 60, 62 connected hy a weh 64 extending parallel to a diametrical plane lying centrally of the crown portion.
The shortening clutch 66 shown in Figures 6,7 and 8 includes a hody portion 68 formed with 20. an end gudgeon 70 arranged to fit hetween the jaw huhs 54 of the shackle 50 with the shackle pin passing through the hores 56 in the jaw huhs and a hore 72 in the end gudgeon. A longitudinal surface groove 74 extends from adjacent the end 25. gudgeon 70 toward a lohed jaw portion 76, lohes 78, 80 of the lohed jaw portion heing spaced apart from a gap 82 forming a continuation of the surface groove. The surface groove 74 and the gap 82 are profiled to accommodate a link 81 of a 30. fall portion of chain 83 (Figure 13) and inner and outer faces 84, 86 of the lohed jaw portion 76 are profiled to accommodate immediately interlinked links of the fall portion of chain.
A hody portion~88 is also formed with a clevis 12~5tj81 connection 90 for an end link 91 of the chain, hetween raised shoulders 92, 94 on the rear face of the hody portion. The free end of the fall length of chain 83 may carry a hook or similar 5. load securing attachment (not shown).
Figures 9-12 show an alternative form of shortening clutch 96 having an end gudgeon 100 arranged to fit hetween the jaw huhs 54 of the shackle 50 with the shackle pin passing through 10. the hores 56 in the jaw huhs and a hore 102 in the end gudgeon. A longitudinal surface groove 104 extends from adjacent the end gudgeon 100 towards a lohed jaw portion 106, lohes 108, 110 of the lohed jaw portion heing 15. spaced apart from a gap 112 forming a continuation of the surface groove. The surface groove 104 and the gap 112 are profiled to accommodate a link of a fall portion of chain (not shown) and inner and outer faces 114, 116 20. are profiled to accommodate immediately interlinked links of the fall portion of the chain. The hody portion 118 is formed with a continuation and enlargement of the surface groove 104 adjacent the end gudgeon 100 to 25. provide a clevis connection 120 for an end link of the chain.
As shown in Figure 13, to assemhle the chain sling assemhly, the components suitahle for the required loading are selected, and connected up together, two connector links 14 (one of which is 5. shown~ heing positioned on the main link 2 and the shortening clutches 66 or 96 positioned on the connecting links hy means of shackles 50.
There is thus provided a compact assem~ly having a relatively low weight which is huilt up as 10. required from standardised components. Once assemhled, the respective pins are secured in position to prevent unauthorised replacement of the components.
The effective lengths of the fall lengths 83 15. of chain is decreased hy engaging a link 81 of the respective chain in the jaw portion of the shortening clutch 66 or 96 to form a loop and therehy shorten the effective length of chain hetween the shortening clutch and the free end of 20. the chain.
This invention relates to chain components and, more particularly, to a chain sling assem~ly.
Such chain sling assem~lies include a main link to which is attached a plurality of secondary 5. links and shackles carrying lengths of chain furnished with hook or similar components appropriate to a load to he slung.
Hitherto, it has heen the practice to position the secondary links on the main links 10. during the forming process prior to welding up either the main or the secondary link.
According to the present invention there is provided a chain sling assemhly having a main link and, as secondary links, separahle connector 15. links, each connector link carrying two shackles providing connections for lengths of sling chain.
The invention will now he descri~ed, hy way of example, with reference to the accompanying, partly diagrammatic, drawings of the components of 20. a chain sling assem~ly in which:-Figure 1 is a portion of an elongate mainlink symmetric hoth a~out major and minor axes, the cross-sections at those axes ~eing indicated;
Figure 2 is a front elevation of a separa~le 25. connector link;
12~5f~
Figure 3 is a side elevation of the separahle connector link Figure 4 is a front elevation of a shackle;
Figure 5 is a sectional elevation of the 5. shackle taken on the line V-V of Figure 4;
Figure 6 is a front elevation of a shortening clutch;
Figure 7 is a sectional elevation of the shortening clutch taken on the line VII-VII of 10. Figure 6;
Figure 8 is a sectional plan view of the shortening clutch taken on the line corresponding to the line VIII-VIII in Figure 7;
Figure 9 is a front elevation of an 15. alternative form of shortening clutch;
Figure 10 is a sectional elevation of the alternative form of shortening clutch taken on the line X-X of Figure 9;
Figures 11 and 12 are sectional plan views 20. respectively taken on the lines corresponding to the lines XI-XI and XII - XII in Figure 10 and Figure 13 is an elevation of the components connected together to form a chain sling assemhly, one of connector link and associated 25. components heing omitted for the sake of clarity.
1~25~81 As shown in Figure 1, the elongate main link 2 has crown portions 4 (part only of one of which is shown) of generally semi-circular form connected hy parallel extending side portions 6 5. (part only of one of which is shown). The crown portions 4 are formed with inner and outer, circumferentially extending, flanges 8 and 10 connected hy a weh 12 extending parallel to a diametrical plane lying centrally of the crown 10. portions 4 as descrihed in our co-pending application ~o.PCT/GB 82/00287.
As shown in Figures 2 and 3, each connector link 14 includes two half-link,portions 16, 18 connected together hy means of a pin 20. Each 15. half-link portion 16, 18 includes a crown portion 22, 24 respectively formed with an inner and an outer circumferentially extending flange 26, 28 and 30, 32 connected hy a weh 34, 36 extending parallel to a diametrical p~ane lying centrally of 20. the crown portions 22, 24 and parallel side limhs 38, 40 extending from the crown. The side limhs 38, 40 have a thickness equal to that of the wehs 34, 36 of the crown portions 22, 24 and progressively increase in width in the diametrical 25. plane lying centrally of the crown portions toward huhs 42, 44 which are hored to receive the connecting pin 20. The huhs 42, 44 are of stepped form, the huhs 42 on the half-link portion 16 heing cut away over an inner portion to 30. accommodate the huhs 44 on the other half-link portion 18 which are cut away over an outer portion, therehy permitting the hores to he aligned to receive the connecting pins 20. A
retaining clip 46 is positioned on-the pin 20 35~ intermediate the inner faces of the huhs 44 to retain the pin in position.
lZ25~i81 The half-link portion 16 is profiled to seat on the main link 2 with the inner surface of the half-link portion making a close fit with the main link, whilst the other half-link portion 18 5. is profiled to receive crown portions of two shackles 50, one of which is shown in Figures 4 and 5.
Each shackle 50 is formed with a pair of lO. side limhs 52 extending from the crown portions 48 to jaw huhs 54 each formed with a hore 56 for a shackle pin (not shown) and a hore 58 for a retaining pin (not shown). The crown portion 48 is formed with inner and outer circumferentially 15. extending, flanges 60, 62 connected hy a weh 64 extending parallel to a diametrical plane lying centrally of the crown portion.
The shortening clutch 66 shown in Figures 6,7 and 8 includes a hody portion 68 formed with 20. an end gudgeon 70 arranged to fit hetween the jaw huhs 54 of the shackle 50 with the shackle pin passing through the hores 56 in the jaw huhs and a hore 72 in the end gudgeon. A longitudinal surface groove 74 extends from adjacent the end 25. gudgeon 70 toward a lohed jaw portion 76, lohes 78, 80 of the lohed jaw portion heing spaced apart from a gap 82 forming a continuation of the surface groove. The surface groove 74 and the gap 82 are profiled to accommodate a link 81 of a 30. fall portion of chain 83 (Figure 13) and inner and outer faces 84, 86 of the lohed jaw portion 76 are profiled to accommodate immediately interlinked links of the fall portion of chain.
A hody portion~88 is also formed with a clevis 12~5tj81 connection 90 for an end link 91 of the chain, hetween raised shoulders 92, 94 on the rear face of the hody portion. The free end of the fall length of chain 83 may carry a hook or similar 5. load securing attachment (not shown).
Figures 9-12 show an alternative form of shortening clutch 96 having an end gudgeon 100 arranged to fit hetween the jaw huhs 54 of the shackle 50 with the shackle pin passing through 10. the hores 56 in the jaw huhs and a hore 102 in the end gudgeon. A longitudinal surface groove 104 extends from adjacent the end gudgeon 100 towards a lohed jaw portion 106, lohes 108, 110 of the lohed jaw portion heing 15. spaced apart from a gap 112 forming a continuation of the surface groove. The surface groove 104 and the gap 112 are profiled to accommodate a link of a fall portion of chain (not shown) and inner and outer faces 114, 116 20. are profiled to accommodate immediately interlinked links of the fall portion of the chain. The hody portion 118 is formed with a continuation and enlargement of the surface groove 104 adjacent the end gudgeon 100 to 25. provide a clevis connection 120 for an end link of the chain.
As shown in Figure 13, to assemhle the chain sling assemhly, the components suitahle for the required loading are selected, and connected up together, two connector links 14 (one of which is 5. shown~ heing positioned on the main link 2 and the shortening clutches 66 or 96 positioned on the connecting links hy means of shackles 50.
There is thus provided a compact assem~ly having a relatively low weight which is huilt up as 10. required from standardised components. Once assemhled, the respective pins are secured in position to prevent unauthorised replacement of the components.
The effective lengths of the fall lengths 83 15. of chain is decreased hy engaging a link 81 of the respective chain in the jaw portion of the shortening clutch 66 or 96 to form a loop and therehy shorten the effective length of chain hetween the shortening clutch and the free end of 20. the chain.
Claims (3)
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. A chain sling assembly comprising a main link having connector links positioned thereon, each connector link having a pair of shackles positioned thereon, said main link being of unitary construction and having a pair of main link crown portions of generally semi-circular form with parallel extending side limbs connecting said main link crown portions, said connector links being formed with first and second portions each including a crown portion formed with an inner and an outer circumferentially extending flange connected by a web extending parallel to a diametrical plane lying centrally of the crown portion, short parallel side limbs extending from said crown portion, said short parallel side limbs of the second portion being formed with end parts stepped inwardly and the short parallel side limbs of the first portion being formed with end parts stepped outwardly to embrace the end parts of the second portion, the said end parts of each portion being formed with a bore and a connecting pin extending through said bores, said pair of shackles each formed with a pair of parallel extending side limbs connected by a shackle crown portion formed with an inner and outer circumferentially extending flange connected by a web extending parallel to a diametrical plane lying centrally of the crown portion and having, at their free ends thereof, jaw hubs bored to receive a shackle pin, the crown portion of the first portion of the connector link being profiled to co-act with crown portions of the main link and the crown portion of the second portion of the connector link being profiled to co-act with crown portions of the pair of shackles, the end portions of the side limbs of the first portion of the connector link being spaced apart by a distance corresponding to the thickness of the crown portions of the main link in a direction perpendicular to the diametrical plane lying centrally of the said crown portion, and, the end portions of the side limbs of the second portion of the connector link being spaced apart by a distance corresponding to the thickness of the crown portions of the shackles in a direction perpendicular to the diametrical plane lying centrally of the said crown portion.
2. A chain sling assembly as claimed in Claim 1, wherein at least one of the pair of shackles is connected to a shortening clutch assembly having a body portion formed with a bored end gudgeon fitting between the jaw hubs of the respective shackle with the shackle pin passing through the bores in the jaw hubs and in the end gudgeon; said shortening clutch assembly being formed with a pinned connection for an end link of a chain length and with a seating for an intermediate link of the chain length.
3. A chain sling as claimed in Claim 2, wherein the pinned connection for the end link of a chain length is located closely adjacent to the seating for the intermediate link of the chain length.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000426078A CA1225681A (en) | 1983-04-18 | 1983-04-18 | Chain components |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000426078A CA1225681A (en) | 1983-04-18 | 1983-04-18 | Chain components |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1225681A true CA1225681A (en) | 1987-08-18 |
Family
ID=4125037
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000426078A Expired CA1225681A (en) | 1983-04-18 | 1983-04-18 | Chain components |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1225681A (en) |
-
1983
- 1983-04-18 CA CA000426078A patent/CA1225681A/en not_active Expired
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CA1295818C (en) | Wire rope equalizer socket | |
| US4556246A (en) | Chain components | |
| US4845814A (en) | Wedge socket | |
| US20090072561A1 (en) | Spreader Assembly | |
| US4145874A (en) | Shackle for chains, especially for sling chains | |
| EP0868386B1 (en) | A chain coupling assembly | |
| US7269937B2 (en) | Chain shortening device | |
| CA1225681A (en) | Chain components | |
| EP0810179B1 (en) | Flat sling coupling constructions | |
| CN100408465C (en) | Hook | |
| US3962755A (en) | Link component for trawling gear | |
| US20080245049A1 (en) | Coupling element for a shackle | |
| US3681808A (en) | Crowfoot-type drag rope socket assembly | |
| AU771157B2 (en) | Hoist arrangement for a dragline rigging | |
| US6604769B2 (en) | Towing plate | |
| US3831993A (en) | Spreader beam fitting | |
| US3583751A (en) | Grab link | |
| US5078654A (en) | Chain pin lubricator system | |
| WO2007068472A1 (en) | Connector | |
| US3582156A (en) | Connector for track-laying chains | |
| CA1052541A (en) | Connector link | |
| US4137704A (en) | Coupling shackle | |
| US2904907A (en) | Dragline bucket | |
| US3611710A (en) | Grab link | |
| GB2108626A (en) | Improvements in chain components |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |