GB2301081A - Lifting Apparatus - Google Patents
Lifting Apparatus Download PDFInfo
- Publication number
- GB2301081A GB2301081A GB9510278A GB9510278A GB2301081A GB 2301081 A GB2301081 A GB 2301081A GB 9510278 A GB9510278 A GB 9510278A GB 9510278 A GB9510278 A GB 9510278A GB 2301081 A GB2301081 A GB 2301081A
- Authority
- GB
- United Kingdom
- Prior art keywords
- lifting
- load bearing
- frustoconical
- slot
- diameter
- 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.)
- Withdrawn
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C1/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles
- B66C1/10—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means
- B66C1/62—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means comprising article-engaging members of a shape complementary to that of the articles to be handled
- B66C1/66—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means comprising article-engaging members of a shape complementary to that of the articles to be handled for engaging holes, recesses, or abutments on articles specially provided for facilitating handling thereof
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Load-Engaging Elements For Cranes (AREA)
Abstract
Lifting apparatus comprises a frustoconical lifting member 1 connectable to a hoist and a load bearing member 5 having formed in its surface an open-ended slot 8. The slot has an entry portion 9 through which the hoist can pass and an inner portion is whose margin is circular and whose sides are chamfered to define a taper which complements the taper of the frustoconical surface of the lifting member 1. The diameter of the circular inner portion of the open-ended slot of the load bearing member is less than the greatest diameter of the frustoconical lifting member and more than the smallest such diameter. The lifting member can be 'T' shaped. The slot can be ribbed or corrugated or formed on an insert.
Description
LIFTING APPARATUS
This invention relates to lifting apparatus and more especially to lifting apparatus which enables a hoist to be engaged with and disengaged from a lifting frame without operator access.
According to the present invention in one aspect there is provided lifting apparatus which comprises a lifting member connectable to a hoist and a load bearing member of a lifting frame, the load bearing member including an openended slot formed with a generally circular inner portion whose diameter lies between the smallest and largest dimension of the lifting member.
According to the present invention in another aspect there is provided lifting apparatus which comprises a frustoconical lifting member connectable to a hoist and a load bearing member of a lifting frame, the load bearing member including an open-ended slot formed with a generally circular inner portion whose diameter lies between the smallest and largest diameter of the frustoconical lifting member and whose sides are chamfered to define a frustoconical surface which complements that of the lifting member.
In a further aspect, the present invention provides lifting apparatus comprising a frustoconical lifting member connectable to a hoist and a load bearing member having formed in its surface an open-ended slot having an entry portion through which that part of the hoist to which the lifting member is connected can pass and an inner portion whose margin is generally circular and whose sides are chamfered to define a taper which complements the taper of the frustoconical surface of the lifting member, the diameter of the generally circular inner portion of the open-ended slot of the load bearing member being less than the greatest diameter of the frustoconical lifting member and more than the smallest such diameter.
The invention will now be described by way of example only with reference to the accompanying diagrammatic drawings in which:
Figure 1 is a sectional view of apparatus in accordaiic With the invention; Figure 2 is a plan view from above of the apparatus illustrated in Figure 1; and
Figures 3 and 4 are respectively plan and side views in section of a steel load bearing plate of the apparatus illustrated in Figures 1 and 2.
The illustrated apparatus comprises a frustoconical lifting member 1 secured to a spindle 2 of a chain hoist 3 by means of a captivated nut 4. Before securing the lifting member to the hoist, the conventional hanging hook of the hoist is removed and replaced by the spindle, the top connection of the spindle being identical to the hoist hook fitting.
A load bearing member in the form of a plate 5 is secured by spacer columns 6 to a lifting frame (not shown) and includes an open-ended slot 7 having a convergent entry portion 8, a generally parallel side central portion 9 and an inner generally circular portion 10. As will be seen from Figure 4, the sides of the load bearing plate which define the margin of the circular portion 10 of the slot are chamfered to define a frustoconical taper 11 which complements that of the lifting member. The taper 11 may not exactly complement that of the lifting member. Indeed, advantages may accrue by having line contact between the lifting member and the load bearing plate. To this end, the surface of the lifting member or the tape 11 may be ribbed, corrugated or the like.Also the taper 11 may be formed on the inner side surface of a lining insert of the lifting plate, this insert being of the same material as or a material different to that of the lifting plate. Thus, the insert may be of brass, plastics or other suitable material.
The diameter of the circular portion 10 of the slot of the load bearing plate is greater than the smallest diameter of the frustoconical surface of the lifting member and less than the largest such diameter. Thus, as shown in
Figure 1, when the lifting member is sited within the circular section of the slot, its frustoconical surface firmly engages the frustoconical surface of the tapered sides 11 of the load bearing plate. The width of the central part 9 is simply sufficient to enable the spindle to pass therethrough and the portion 8 is flared for ease of operation.
The lifting and load bearing members may be produced from any suitable material, conventionally steel. Also, the 'oad bearing member may form part of the member to be lifted, the slot being formed in the member itself.
In use, the hoist is lowered to enable the spindle 2 to enter the slot and is then raised to locate the lifting member firmly within generally circular portion 10 of the slot formed in the load bearing plate. The complementary surfaces of the lifting member 1 and the tapered sides 11 of the slot provide a good connection between the lifting member and the load bearing plate. Once the lifting frame has been moved by the hoist to its required position, the hoist is lowered to release the lifting member from the load bearing plate 5. Thus the hoist can be engaged with and disengaged from the lifting frame without operator access.
In an unillustrated embodiment, the lifting member is generally of inverted "T" configuration, the diameter of the upper part of the member being such as to enable it to pass through the entry portion 8 of the slot 7 and the lower part of the member being of a diameter greater than that of the central portion 9 of the slot whereby its upper surface can engage the adjoining under surface of the load bearing member. In this arrangement, the upper part of the lifting member is preferably tapered for ease of assembly.
It will be appreciated that the foregoing is merely exemplary of lifting apparatus in accordance with the invention and that modifications can readily be made thereto without departing from the true scope of the invention.
Claims (8)
1. Lifting apparatus which comprises a lifting member
connectable to a hoist and a load bearing member of a
lifting frame, the load bearing member including an
open-ended slot formed with a generally circular inner
portion whose diameter lies between the smallest and
largest dimension of the lifting member.
2. Lifting apparatus which comprises a frustoconical
lifting member connectable to a hoist and a load
bearing member of a lifting frame, the load bearing
member including an open-ended slot formed with a
generally circular inner portion whose diameter lies
between the smallest and largest diameter of the
frustoconical lifting member and whose sides are
chamfered to define a frustoconical surface which
complements that of the lifting member.
3. Lifting apparatus comprising a frustoconical lifting
member connectable to a hoist and a load bearing
member having formed in its surface an open-ended slot
having an entry portion through which that part of the
hoist to which the lifting member is connected can
pass and an inner portion whose margin is generally
circular and whose sides are chamfered to define a
taper which complements the taper of the frustoconical
surface of the lifting member, the diameter of the
generally circular inner portion of the open-ended
slot of the load bearing member being less than the
greatest diameter of the frustoconical lifting member
and more than the smallest such diameter.
4. Lifting apparatus as claimed in any one of Claims 1 to
3 wherein the load bearing member comprises a plate
secured by spacer bars to the lifting frame.
5. Lifting apparatus as claimed in Claim 3 or Claim 4
wherein the entry portion of the slot converges
towards the inner portion of the slot.
6. Lifting apparatus as claimed in any one of Claims 3 to
5 wherein the tapered side of the inner portion of the
slot is ribbed or corrugated.
7. Lifting apparatus as claimed in any one of Claims 3 to
6 wherein the taper is formed on an inner side surface
of a lining insert of the lifting plate.
8. Lifting apparatus substantially as herein described
and as described with reference to Figures 1 to 3 of
the accompanying diagrammatic drawings.
8. Lifting apparatus as claimed in any one of Claims 1 to
3 and 5 to 7 wherein the lifting member is generally
of inverted "T" configuration.
9. Lifting apparatus substantially as herein described
and as described with reference to Figures 1 to 3 of
the accompanying diagrammatic drawings.
Amendments to the claims have been filed as follows 1. Lifting apparatus which comprises a frustoconical
lifting member connectable to a hoist and a load
bearing member of a lifting frame, the load bearing
member including an open-ended slot formed with a
generally circular inner portion whose diameter lies
between the smallest and largest diameter of the
frustoconical lifting member and whose sides are
chamfered to define a frustoconical surface which
complements that of the lifting member.
2. Lifting apparatus comprising a frustoconical lifting
member connectable to a hoist and a load bearing
member having formed in its surface an open-ended slot
having an entry portion through which that part of the
hoist to which the lifting member is connected can
pass and an inner portion whose margin is generally
circular and whose sides are chamfered to define a
taper which complements the taper of the frustoconical
surface of the lifting member, the diameter of the
generally circular inner portion of the open-ended
slot of the load bearing member being less than the
greatest diameter of the frustoconical lifting member
and more than the smallest such diameter.
3. Lifting apparatus as claimed in Claim 1 or Claim 2
wherein the load bearing member comprises a plate
secured by spacer bars to the lifting frame.
4. Lifting apparatus as claimed in Claim 2 or Claim 3
wherein the entry portion of the slot converges
towards the inner portion of the slot.
5. Lifting apparatus as claimed in Claim 4 or Claim 5
wherein the tapered side of the inner portion of the
slot is ribbed or corrugated.
6. Lifting apparatus as claimed in Claim 4 or Claim 5
wherein the taper is formed on an inner side surface
of a lining insert of the lifting plate.
7. Lifting apparatus as claimed in Claim 1 or Claim 2 5
wherein the lifting member is generally of inverted
"T" configuration.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB9510278A GB2301081A (en) | 1995-05-22 | 1995-05-22 | Lifting Apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB9510278A GB2301081A (en) | 1995-05-22 | 1995-05-22 | Lifting Apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB9510278D0 GB9510278D0 (en) | 1995-07-19 |
| GB2301081A true GB2301081A (en) | 1996-11-27 |
Family
ID=10774808
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB9510278A Withdrawn GB2301081A (en) | 1995-05-22 | 1995-05-22 | Lifting Apparatus |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB2301081A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1999026875A1 (en) * | 1997-11-25 | 1999-06-03 | John Alexander Aston | Hoist ring assembly |
| EP1038822A1 (en) * | 1999-03-24 | 2000-09-27 | Bernard Pigois | Automatic reversible coupling device for a chain and the like which connects an underwater object to the surface |
| FR2894238A1 (en) * | 2005-12-06 | 2007-06-08 | Renault Sas | Lifting ring for internal combustion engine of vehicle, has lower part with fins comprising outer walls forming specific angle with respect to axis along which ring is extended such that ring cooperates, by wedging, with lateral walls |
| CN103626020A (en) * | 2013-12-11 | 2014-03-12 | 广东迪生电力钢构器材有限公司 | Connecting device capable of realizing rapid and safe lifting of hoisting equipment and lifting appliance |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB714518A (en) * | 1951-12-12 | 1954-09-01 | Ace Machinery Ltd | Improvements in or relating to winches |
| GB718248A (en) * | 1952-12-01 | 1954-11-10 | Markus Markussen | Improvements in or relating to cargo platforms |
| GB1145609A (en) * | 1967-01-27 | 1969-03-19 | Israel Ports Authority | Lifting arrangement of pallets, containers and the like |
| US4304432A (en) * | 1980-03-10 | 1981-12-08 | Cavaz, Hanlon & Silva | Plate-lifting device |
| WO1988010401A1 (en) * | 1987-06-22 | 1988-12-29 | Cronspisen Kakelugnsmakeri Ab | A stove as well as a method and a device for manufacturing and mounting fire-places |
| US5033784A (en) * | 1989-05-15 | 1991-07-23 | Master Unit Die Products, Inc. | Mold balancing lifting bar |
| GB2244042A (en) * | 1988-12-14 | 1991-11-20 | Tts Transport Pty Ltd | A grapple |
-
1995
- 1995-05-22 GB GB9510278A patent/GB2301081A/en not_active Withdrawn
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB714518A (en) * | 1951-12-12 | 1954-09-01 | Ace Machinery Ltd | Improvements in or relating to winches |
| GB718248A (en) * | 1952-12-01 | 1954-11-10 | Markus Markussen | Improvements in or relating to cargo platforms |
| GB1145609A (en) * | 1967-01-27 | 1969-03-19 | Israel Ports Authority | Lifting arrangement of pallets, containers and the like |
| US4304432A (en) * | 1980-03-10 | 1981-12-08 | Cavaz, Hanlon & Silva | Plate-lifting device |
| WO1988010401A1 (en) * | 1987-06-22 | 1988-12-29 | Cronspisen Kakelugnsmakeri Ab | A stove as well as a method and a device for manufacturing and mounting fire-places |
| GB2244042A (en) * | 1988-12-14 | 1991-11-20 | Tts Transport Pty Ltd | A grapple |
| US5033784A (en) * | 1989-05-15 | 1991-07-23 | Master Unit Die Products, Inc. | Mold balancing lifting bar |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1999026875A1 (en) * | 1997-11-25 | 1999-06-03 | John Alexander Aston | Hoist ring assembly |
| GB2346865A (en) * | 1997-11-25 | 2000-08-23 | John Alexander Aston | Hoist ring assembly |
| GB2346865B (en) * | 1997-11-25 | 2001-11-21 | John Alexander Aston | Hoist ring assembly |
| US6349985B1 (en) * | 1997-11-25 | 2002-02-26 | John Alexander Aston | Hoist ring assembly |
| EP1038822A1 (en) * | 1999-03-24 | 2000-09-27 | Bernard Pigois | Automatic reversible coupling device for a chain and the like which connects an underwater object to the surface |
| FR2791336A1 (en) * | 1999-03-24 | 2000-09-29 | Bernard Pigois | DEVICE FOR AUTOMATIC REVERSIBLE HANGING OF A CHAIN OR THE LIKE THAT CONNECTS TO THE SURFACE AN UNDERWATER OBJECT |
| FR2894238A1 (en) * | 2005-12-06 | 2007-06-08 | Renault Sas | Lifting ring for internal combustion engine of vehicle, has lower part with fins comprising outer walls forming specific angle with respect to axis along which ring is extended such that ring cooperates, by wedging, with lateral walls |
| CN103626020A (en) * | 2013-12-11 | 2014-03-12 | 广东迪生电力钢构器材有限公司 | Connecting device capable of realizing rapid and safe lifting of hoisting equipment and lifting appliance |
Also Published As
| Publication number | Publication date |
|---|---|
| GB9510278D0 (en) | 1995-07-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CA2019125A1 (en) | Apparatus for manipulating a pallet | |
| US4079983A (en) | Weight lifting eye and socket | |
| AU2465288A (en) | Bush | |
| ATE327859T1 (en) | CLAMPING DEVICE, ESPECIALLY FOR WORKPIECES TO BE MACHINED ON MULTI-SIDES | |
| CA2068055A1 (en) | Lifting and handling device for drums | |
| GB2301081A (en) | Lifting Apparatus | |
| US4978090A (en) | Remote-handled pipe support | |
| EP1016498A3 (en) | Coupling device having two coupling parts and a clamping device | |
| DE202013105006U1 (en) | Elevator with tubular motor and split motor mount | |
| US6749237B1 (en) | Unitary body swiveling hoist ring and method of manufacture | |
| US4572692A (en) | Positive drive positioning collar | |
| EP0205343A3 (en) | Drum lifting apparatus | |
| US4836009A (en) | Upper tool support for a stamping machine or the like | |
| US4912961A (en) | Structure for securing a die to a bolster plate | |
| IE35493B1 (en) | Improved anchorage sleeve | |
| JPS6134023B2 (en) | ||
| US3759471A (en) | Quick-release support member attachment means | |
| US2071499A (en) | Locking device for crane hooks | |
| EP0145017A2 (en) | Improvements relating to coupling devices | |
| KR200367434Y1 (en) | Lifting clamp for grating | |
| CN221565545U (en) | Lifting jig | |
| CN112777478A (en) | Aeroengine upset frock and hoist thereof | |
| JPH05262495A (en) | Guide device for wire rope | |
| US20040101350A1 (en) | Mounting and dismounting device e.g. for a sleeve or bearing with a locking means comprising two conical elements | |
| SE9003664L (en) | DEVICE AT MACHINERY |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| WAP | Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1) |