CA2527786C - Overload indicator for a load supporting apparatus - Google Patents
Overload indicator for a load supporting apparatus Download PDFInfo
- Publication number
- CA2527786C CA2527786C CA 2527786 CA2527786A CA2527786C CA 2527786 C CA2527786 C CA 2527786C CA 2527786 CA2527786 CA 2527786 CA 2527786 A CA2527786 A CA 2527786A CA 2527786 C CA2527786 C CA 2527786C
- Authority
- CA
- Canada
- Prior art keywords
- longitudinal
- connection point
- slots
- post
- load
- 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 - Fee Related
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C13/00—Other constructional features or details
- B66C13/16—Applications of indicating, registering, or weighing devices
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Electric Cable Arrangement Between Relatively Moving Parts (AREA)
- Mutual Connection Of Rods And Tubes (AREA)
- Refuge Islands, Traffic Blockers, Or Guard Fence (AREA)
- Agricultural Machines (AREA)
Abstract
An overload indicator for a load supporting apparatus is arranged to bend during overloading of the apparatus, thereby visually indicating the overload to a user or observer. The indicator features a longitudinal member having a U- shaped cross section defining one central and two side portions. A series of slots extend into each side portion from a side opposite the central portion such that the member will bend concavely with respect to that side, moving opposite ends of the member closer together. The indicator is arranged to extend between connection points on a first member and a second load supporting member of the apparatus in order to bend in response to excessive loading of the second member. The bending moves the connection points of the two members closer together, thus bringing the load closer to the first member.
Claims (20)
1. An apparatus for supporting a load, said apparatus comprising:
a first member having a first connection point thereon;
a second member having a second connection point thereon, said second member being adapted to support the load and being supported on the first member; and an overload indicator comprising a longitudinal member having opposite ends spaced apart by a first distance, said overload indicator extending between the first and second connection points, thereby supporting the second member on the first member;
the connection points being points being spaced apart by a second distance;
the apparatus having a load limit;
the longitudinal member of the overload indicator being adapted to bend if the load exceeds the load limit of the apparatus such that the first distance between the opposite ends of said longitudinal member is decreased, thereby visually indicating overloading of the apparatus; and the second member being arranged to move during bending of the longitudinal member of the overload indicator such that the second distance between the first and second connection points is decreased.
a first member having a first connection point thereon;
a second member having a second connection point thereon, said second member being adapted to support the load and being supported on the first member; and an overload indicator comprising a longitudinal member having opposite ends spaced apart by a first distance, said overload indicator extending between the first and second connection points, thereby supporting the second member on the first member;
the connection points being points being spaced apart by a second distance;
the apparatus having a load limit;
the longitudinal member of the overload indicator being adapted to bend if the load exceeds the load limit of the apparatus such that the first distance between the opposite ends of said longitudinal member is decreased, thereby visually indicating overloading of the apparatus; and the second member being arranged to move during bending of the longitudinal member of the overload indicator such that the second distance between the first and second connection points is decreased.
2. The apparatus according to Claim 1 wherein the first member comprises a post extending upwardly from a lower end, the first connection point being upwardly spaced from said lower end.
3. The apparatus according to Claim 1 wherein the second member comprises a longitudinal support member supported on a post upward from the first connection point and extending to one side of said post.
4. The apparatus according to Claim 3 wherein the load is supported on the longitudinal support member at a loading point distally spaced from the post.
5. The apparatus according to Claim 4 wherein the second connection point is located between the post and the loading point.
6. The apparatus according to Claim 5 wherein the first member further comprises a first mounting element supported on the post and extending toward the second connection point, the first connection point being located on said first mounting element.
7. The apparatus according to Claim 6 wherein the second member further comprises a second mounting element supported on the longitudinal support member and extending toward the first connection point, the second connection point being located on the second mounting element such that the overload indicator is supported between said first and second mounting elements.
8. The apparatus according to Claim 1 wherein the overload indicator further comprises a plurality of slots spaced along the longitudinal member between the opposite ends thereof, said slots extending into said longitudinal member from a first side thereof.
9. The apparatus according to Claim 8 wherein the longitudinal member comprises a U-shaped cross section defining a central portion separating two spaced apart side portions, said side portions extending from the central portion toward the first side of the longitudinal member such that the plurality of slots are spaced along and extend into each of said side portions.
10. The apparatus according to Claim 9 wherein the slots in the side portions of the longitudinal member do not extend to the central section thereof.
11. An apparatus for supporting a load, said apparatus comprising:
a first member having a first connection point thereon;
a second member having a second connection point thereon, said second member being adapted to support the load and being supported on the first member; and an overload indicator comprising:
a longitudinal member having opposite ends spaced apart by a first distance; and a plurality of slots spaced along the longitudinal member between the opposite ends thereof, said slots extending into said longitudinal member from a first side thereof;
said overload indicator extending between the first and second connection points, thereby supporting the second member on the first member;
the connection points being points being spaced apart by a second distance;
the slots of the overload indicator being arranged to cause the longitudinal member of said overload indicator to bend concavely with respect to the first side thereof during overloading of the apparatus such that the first distance between the opposite ends of said longitudinal member is decreased; and the second member being arranged to move during bending of the longitudinal member of the overload indicator such that the second distance between the first and second reference points is decreased.
a first member having a first connection point thereon;
a second member having a second connection point thereon, said second member being adapted to support the load and being supported on the first member; and an overload indicator comprising:
a longitudinal member having opposite ends spaced apart by a first distance; and a plurality of slots spaced along the longitudinal member between the opposite ends thereof, said slots extending into said longitudinal member from a first side thereof;
said overload indicator extending between the first and second connection points, thereby supporting the second member on the first member;
the connection points being points being spaced apart by a second distance;
the slots of the overload indicator being arranged to cause the longitudinal member of said overload indicator to bend concavely with respect to the first side thereof during overloading of the apparatus such that the first distance between the opposite ends of said longitudinal member is decreased; and the second member being arranged to move during bending of the longitudinal member of the overload indicator such that the second distance between the first and second reference points is decreased.
12. The apparatus according to Claim 11 wherein the longitudinal member comprises a U-shaped cross section defining a central portion separating two spaced apart side portions, said side portions extending from the central portion toward the first side of the longitudinal member such that the plurality of slots are spaced along and extend into each of said side portions.
13. The apparatus according to Claim 12 wherein the slots in the side portions of the longitudinal member do not extend to the central section thereof.
14. The apparatus according to claim 11 wherein the first member comprises a post extending upwardly from a lower end, the first connection point being upwardly spaced from said lower end.
15. The apparatus according to Claim 14 wherein the second member comprises a longitudinal support member supported on the post upward from the first connection point and extending to one side of said post.
16. The apparatus according to Claim 15 wherein the load is supported on the longitudinal support member at a loading point distally space from the post.
17. The apparatus according to Claim 16 wherein the second connection point is located between the post and the loading point.
18. The apparatus according to Claim 17 wherein the first member further comprises a first mounting element supported on the post and extending toward the second connection point, the first connection point being located on said first mounting element.
19. The apparatus according to Claim 18 wherein the second member further comprises a second mounting element supported on the longitudinal support member and extending toward the first connection point, the second connection point being located on the second mounting element such that the overload indicator is supported between said first and second mounting elements.
20. A device comprising:
a longitudinal channel member having opposite ends spaced apart and a U-shaped cross section defining opposed side portions spaced apart by a central portion, a first end of the longitudinal channel configured and arranged to be coupled to a post of a load supporting apparatus and a second end of the longitudinal channel configured and arranged to be coupled to a support member of the load supporting apparatus;
a plurality of slots spaced along each side portion of the longitudinal channel member between the opposite ends thereof, said slots extending into said side portion from a first side of said longitudinal channel member, said first side being opposite the central portion;
the slots being arranged such that each slot has a respective slot on the opposite side portion that is generally equal in dimensions and is equally positioned along the longitudinal channel member; and each slot being of a length such that a distance is defined between said slot and the central portion of the longitudinal channel member, each slot further having generally straight side edges that extend from the first side of a respective side portion in generally a perpendicular fashion in relation to the central portion, each slot further having generally a narrow width in relation to a length of a respective side portion, the slots at least in part causing the longitudinal channel member to bend when a load on the support member exceeds a defined load limit.
a longitudinal channel member having opposite ends spaced apart and a U-shaped cross section defining opposed side portions spaced apart by a central portion, a first end of the longitudinal channel configured and arranged to be coupled to a post of a load supporting apparatus and a second end of the longitudinal channel configured and arranged to be coupled to a support member of the load supporting apparatus;
a plurality of slots spaced along each side portion of the longitudinal channel member between the opposite ends thereof, said slots extending into said side portion from a first side of said longitudinal channel member, said first side being opposite the central portion;
the slots being arranged such that each slot has a respective slot on the opposite side portion that is generally equal in dimensions and is equally positioned along the longitudinal channel member; and each slot being of a length such that a distance is defined between said slot and the central portion of the longitudinal channel member, each slot further having generally straight side edges that extend from the first side of a respective side portion in generally a perpendicular fashion in relation to the central portion, each slot further having generally a narrow width in relation to a length of a respective side portion, the slots at least in part causing the longitudinal channel member to bend when a load on the support member exceeds a defined load limit.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2527786 CA2527786C (en) | 2005-11-18 | 2005-11-18 | Overload indicator for a load supporting apparatus |
| AU2006326807A AU2006326807B2 (en) | 2005-11-18 | 2006-11-20 | Collapsible link for a load supporting apparatus |
| PCT/CA2006/001888 WO2007071015A1 (en) | 2005-11-18 | 2006-11-20 | Collapsible link for a load supporting apparatus |
| EP06848696A EP1948550B1 (en) | 2005-11-18 | 2006-11-20 | Collapsible link for a load supporting apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2527786 CA2527786C (en) | 2005-11-18 | 2005-11-18 | Overload indicator for a load supporting apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2527786A1 CA2527786A1 (en) | 2007-05-18 |
| CA2527786C true CA2527786C (en) | 2012-07-17 |
Family
ID=38051441
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2527786 Expired - Fee Related CA2527786C (en) | 2005-11-18 | 2005-11-18 | Overload indicator for a load supporting apparatus |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP1948550B1 (en) |
| AU (1) | AU2006326807B2 (en) |
| CA (1) | CA2527786C (en) |
| WO (1) | WO2007071015A1 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9410332B2 (en) | 2012-10-02 | 2016-08-09 | Honeywell International Inc. | Variable height attachment point system for a safety harness |
| CN113291980B (en) * | 2021-05-14 | 2022-11-18 | 上海振华重工(集团)股份有限公司 | Multisource fault alarm system suitable for automatic crane |
| DE102023001064A1 (en) * | 2023-03-17 | 2024-09-19 | SpanSet lnter AG | Device for height and/or fall protection |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3760963A (en) * | 1971-08-26 | 1973-09-25 | F Welch | Lifting attachment for a crane |
| US4131078A (en) * | 1977-04-29 | 1978-12-26 | The Manitowoc Company, Inc. | Collapsible crane backhitch and overload signal system |
| US6170802B1 (en) * | 1999-09-16 | 2001-01-09 | Lonnie Thomas Stovall | Convertible lifting device |
| US6830423B1 (en) * | 2002-12-18 | 2004-12-14 | Chadco Enterprises, Inc. | Personal mobility vehicle lift |
| US20040256607A1 (en) * | 2003-06-18 | 2004-12-23 | Michael Spitsbergen | Portable hoist system |
-
2005
- 2005-11-18 CA CA 2527786 patent/CA2527786C/en not_active Expired - Fee Related
-
2006
- 2006-11-20 EP EP06848696A patent/EP1948550B1/en not_active Not-in-force
- 2006-11-20 AU AU2006326807A patent/AU2006326807B2/en not_active Ceased
- 2006-11-20 WO PCT/CA2006/001888 patent/WO2007071015A1/en active Search and Examination
Also Published As
| Publication number | Publication date |
|---|---|
| EP1948550A1 (en) | 2008-07-30 |
| EP1948550B1 (en) | 2013-02-27 |
| CA2527786A1 (en) | 2007-05-18 |
| AU2006326807B2 (en) | 2011-05-19 |
| EP1948550A4 (en) | 2010-09-08 |
| WO2007071015A1 (en) | 2007-06-28 |
| AU2006326807A1 (en) | 2007-06-28 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKLA | Lapsed |
Effective date: 20171120 |