CA2038048A1 - Heavy-load lifting system - Google Patents
Heavy-load lifting systemInfo
- Publication number
- CA2038048A1 CA2038048A1 CA 2038048 CA2038048A CA2038048A1 CA 2038048 A1 CA2038048 A1 CA 2038048A1 CA 2038048 CA2038048 CA 2038048 CA 2038048 A CA2038048 A CA 2038048A CA 2038048 A1 CA2038048 A1 CA 2038048A1
- Authority
- CA
- Canada
- Prior art keywords
- essentially
- load
- shaped head
- mushroom
- head
- 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.)
- Abandoned
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
Abstract
ABSTRACT OF THE DISCLOSURE
To lift a heavy load, the load must be coupled to a lifting member, such as a lifting rail. In accordance with the invention, the coupling is formed by a holder projection (4) with an essentially mushroom-shaped head (10) extending upwardly from the load, for combination and association with a gripper element (5) extending downwardly from the transport member or rail, positioned to fit over the mushroom-shaped head. The gripper element includes releasable locking elements. The gripper element is essentially bell-shaped, with radial bores through which balls can pass, to fit under the enlarged,essentially mushroom-shaped head (10) and thereby lock the bell-shaped gripper element and the holder projection together; for unlocking, a sleeve, which holds the balls in position,is shifted to permit the balls to enter into a recess (9a) into a sleeve, and permit release of the gripper element from the holder projection.
Eight balls, uniformly circumferentially positioned, can lift a load of 20 tons, for example.
To lift a heavy load, the load must be coupled to a lifting member, such as a lifting rail. In accordance with the invention, the coupling is formed by a holder projection (4) with an essentially mushroom-shaped head (10) extending upwardly from the load, for combination and association with a gripper element (5) extending downwardly from the transport member or rail, positioned to fit over the mushroom-shaped head. The gripper element includes releasable locking elements. The gripper element is essentially bell-shaped, with radial bores through which balls can pass, to fit under the enlarged,essentially mushroom-shaped head (10) and thereby lock the bell-shaped gripper element and the holder projection together; for unlocking, a sleeve, which holds the balls in position,is shifted to permit the balls to enter into a recess (9a) into a sleeve, and permit release of the gripper element from the holder projection.
Eight balls, uniformly circumferentially positioned, can lift a load of 20 tons, for example.
Description
~X~
FIELD OF THE INVENTION.
The present invention relates to a system to couple together a load and a transport system~ in which the load is extremely heavy, for example in the order of tons, S so that the load can be transported, for example by a crane, or the like, for positioning or removal from a predetermined position.
BACR~ROUND.
Systems to lift heavy structures, and particularly heavy mechanical structures such as complete printing machines, usually employ a liftable transport beam, or a plurality of transport beams, which can be releasably connected to rigid structures of the printing machine or station which is to be moved. Usually, screw connections are employed, in which one or more heavy bolts are connected to the printing machine station, to be fitted into suitable reception openings in a carrier beam, and then connected by nuts or the like to the carrier beam. Assembling the carrier beam for transport to a printing station, which may have to be replaced, for example for service, replacement of cylinders, retrofitting or the like, is time-consuming and labor-intensive, requiring at least three, and usually four operators. To align, for example with a crane, a transport beam with the projecting bolts from the machine system is complicated and it frequently happens that the projecting bolts are damaged, which further increases the time and effort in moving the printing machine system.
THE INVE~TIO~.
.
It is an object to provide a releasable lifting system for extremely heavy loads, for example printing machine stations, which can be easily coupled and uncoupled, without damage, or danger of damage to the coupling arrangement used in the system.
Briefly, the printing machine system is formed with ao a holder projection which has an enlarged, essentially mushroom-shaped head, extending, for example, from selected positions on top of the side:walls of the printingmachine station.
These side walls are thick steel plates, for example several inches thick, and hence extremely heavy. A grip?er element extends, for example by a bolt connection, from the lifting or transport member, for example a transport beam, and located on the transport beam in position to fit on and over the head. A releasable locking arrangement is provided, coupled to the gripper element, which engages underneath the enlarged, essentially mushroom-shaped head, and thus releasably coupling together the holder projection and the gripper element.
The upper portion of the holder projection can be rounded or tapered, so that the gripper element, which can be in sleeve or bell shape, will self-align over the holder projection. Typically, a plurality of such coupling elements are provided; each one of them can be readily constructed to support 20 metric tons or more.
In accordance with a feature of the invention, the releasable locking means is formed by a sleeve, rotatably engaging a plurality of balls to fit under the mushroom-shaped head, when engaged, or to permit release therefrom when disengaged. This provides for direct load transfer of the holder projection or, rather, the head thereof, tn the gripper element, reaching thereover, without introducing substantial lateral forces.
DRAWINGS:
Fig. 1 is a schematic side view, partly in section, showing the lifting system and the coupling arrangement, in released position, that is, before the lifting system is engaged;
Fig. 2 is a view similar to Fig. 1, in which the coupling arrangement is engaged, so that the heavy load is ready to be lifted; and Fig. 3 is a developed highly schematic side view of a portion of the locking arrangement to show, in detail, the lock which is provided, and omitting all features not necessary for an understanding of the specific detail illlustration.
DETAILED DESCRIPTION.
Referring first to Fig. 1: A transport beam 1 is placed in position to lift a printing station, only a fraction of a top wall thereof being shown, schematically, at 3. The beam 1 ;,,~J~, 3 !~, j and the printing station 3 are coupled together by a coupling arrangement 2. Of course, a plurality of such coupling arrangements will be provided along the length of the beam 1, as well as on the printing station 3, to distribute the load, S and to maintain the balance of the printing station.
In accordance with a feature of the invention, the coupling arrangement 2 has an enlarged, essentially mushroom-shaped element 4, secured to the printing station 3, and an essentially bell-shaped gripper element 5 which reaches over the head 10 of the holder element 4. Of course, the position of the elements 4 and 5 can be reversed, although the arrangement as shown in the drawings is preferred since, then, the locking of the bell-shaped gripper element 5 will be assisted by gravity.
In accordance with a feature of the invention, the gripper element 5 is a hollow cylinder, which merges into a threaded bolt-like extension 16 (Fig. l), the other end of which is secured by a nut 16a to the beam 1, preferably with interposition of an underlay or a washer, as well known.
The bell-shaped gripper element 5 is formed with an extension bell or wall 6, of essentially sleeve-like form.
A clamping or locking sleeve 7 surrounds the wall 6 of the gripper element 5. Radial bores 8 areformed in the wall 6 of the gripper element. Locking balls9 are located in the radlal bores. To prevent the balls 9 from falling out, the radial bores 8 are slightly constricted in the region adjacent the inner surface of the wall 6, for example by forming a slightly constricted edge, so that the balls 9 cannot fall through the bores 8 into the interior of the bell-shaped gripper element upon removal of the head 4. Towards the outside, the balls 9 are secured in position by the sleeve 7 which, together with the bores 8 and the balls 9, forms a locking arrangement. Other systems can be used and, in accordance with another suitable and desirable form of the invention, spring elements can be fitted in the bores 8 in which the balls 9 are pressed into a recess 9a formed in the sleeve 7, that is, tending to move the balls9 in the bores 8 in an axially outward direction.
The mushroom-shaped holder or holding elements 4 are each formed as a screw bolt with an expanded head 10, a shaft 11, and a base 12. The expanded head 10 has a substantially larger diameter than the shaft 11. Its outer side, that is, the surface remote from the base 12, forms a frusto-conical surface 13; alternatively, the surface 13 can be rounded, or entirely conical. The surface 14 of the head 10 facing the base 12, likewise, is shaped as a conical ring surface.
The base 12 has hexagonal shape, capable of being gripped by a wrench, and merges at its lowest extremity into a threaded bolt 15, adapted to be threaded into a suitable bore at an upper portion of the load 3 to be lifted. Other connections are also suitable. In accordance with another, equally preferred feature of the invention, the surface, and particularly at the lower region 14 thereof, can be cylindrical if the bores 8 in the wall 6 have spring elements therein tending to urge the balls 9 outwardly.
The locking sleeve 7 is held in its upper position (Fig. 1) by enga8ement of a pin 17 secured to the sleeve 7 in a channel 18. The channel 18 is best seen in detail in Fig. 3, and formed by a part-channel 181, extending parallel to the axis of the cylindrical or bell-shaped portion 6;
Extending laterally from the duct or groove 181 is a part-groove 182 which, then, merges into an enlarged portion 183, having a depression parallel to the part-groove or c'aannel 181 The part or laterally extending portion 182 extends at right angle from the part-groove 181. The pin 17 extending inwardly from the locking sleeve 7 is, for example, a set screw or threaded pin. This pin 17 is secured in position, after having been screwed into the matching hole in the sleeve 7, by a suitable thread adhesive, for example by introducing "Loctite" (Reg. TM), so that unintended removal of the pin 17 is prevented. The pin 17 guides the locking sleeve 7, and holds the locking sleeve 7 in position when it is shifted on the wall 6 of the bell-shaped gripping element 5. The threaded pin 17 and its guide and locking duct or groove 18, together, form a locking arrangement similar to a bayonet lock.
The lower position of the clamping sleeve 7 is detarmined by a groove 21 formed at the outer surface of the wall 6, close to the lower edge thereof.
The end portion of the wall 6 is slightly enlarged, so that the sleeve 7 cannot be removed downwardly. A safety bore 20, formed in the locking sleeve 7 which may, for example, retain a spring-loaded ball or the like,or a pin, is operatively associated with the groove 21, to securely hold the sleeve 7 in the lower position when moved thereto.
The upper position of the clamping sleeve 7 is defined by a safety ring l9, for example a C-ring, snapped into a suitable circumferential groove on the wall 6 of the gripper elements 5. The safety ring l9 prevents escape of the threaded pin 17 from the duct or groove 18;
f.~ ,1,''J~
the safety ring 19 is located spaced downwardly from the bolt-like extension 16 of the gripper element 5.
Opera_ion:
The holder elements 4 are secured to the upper wall of the printing station or other load 3, preferably during manufacture or final assembly thereof, to project vertically upwardly therefrom, as best seen in Figs. 1 and 2. They may remain there until the printing system or printing station, is located at its final operating position, for example on a suitable concrete base. To transport the printing station to the operating location, the gripper elements 5 are secured to the transport beam 1, spaced and positioned to fit over the projecting holder elements 4.
To move the printing systems, or other heavy load 3, the transport beam 1 is so located that each one of the bell-shaped gripper elements 5 will fit over the associated holder element 4. The clamping sleeve 7 of each one of the gripper elements is in an upper position. The locking balls 9 do not extend into the interior of the gripper element 5, as seen in Fig. 1.
The transport beam 1 is then lowered, counter the direction of the arrow LF which, schematically, represents a lifting force which can be applied on the beam 1. When the transport beam 1 is completely lowered, so that the gripper elements 5 surround the holding elements 4, the coupling sleeve 7 of the coupling arrangement 2 is shifted downwardly. This shifts the locking ball 9 into the interior of the gripping elements and under the head 10 of the holder elements 4 to lock it in the interior of the gripper elements 5 -see Fig. 2. The clamping sleeve 7 is then locked in position;
~ ~3 ~
this may be achieved by a spring-loaded ball; or, pr~ferably, a separate locking ele~ent is intr~duc~d through th~ bor~ 20 to e~gage in the saf~ty groove 21. Such a locking element, which may include a visible tag to show that the clamping sleev~ 7 is s~curely lock~d, may for ~xample be a separately r~movabl~
spring pin or the like. Its only function is to hold the sl~eve 7 in position; it does not car~y any load.
The transport beam l can then be lifted by applying a lifting force in accordance with the arrow LF therato, for example by raising a crane, hoist or the like.
After moving the load 3 to the desired position, and to release the coupling syRtem 2, the safety element from the sleeve 7 is removed, permitting the sleeve 7 to be pushed upwardly. When, then, the beam l is again raised, thus raising the gripper element 5, the lower conical surface 14 on the holder element push~s the bal~ 9 into the recess 9a of the sleeve 7 through the bores 8 of the wall 6 to release the balls 8 from position heneath the expanded head 10 of the holder element 4. This, then, permits complete separation of the gripper element 5 from the holder element 4. The number of locking balls 9 in the gripper element 5 is determinad by the load to be carried, as well as the size, that is, essentially, the diameter of the coupling system 2.
In the embodiment illustrated in Fig. 1, eight balls are uniformly circumferentia-lly located within the wall 6.
The carrying capacity of such a coupling system i9 in the order of about 20 metric tons.
A suitable diameter for the cylindrlcal portion ll of the holder element 4 is: 56 mm.
A suitable diameter for the head 10 of the holder element 4 is: 73 n-~.
~ ~ .3 ~ 3 The system, in locked position for lifting, is best seen in Fig. 2. As clearly seen, the geometry of the head portion 11 prevents vertical shifting of the load, since the weight of the load results in an inclined force component, with respect to the axis of the holder element 4, due to the conical surface 14, which inclined component provides a clamping force for the sleeve.
The system has numerous advantages, namely:
(1) Damage to any threads of bolts, which are used in order to lift the heavy load 3, is reliably prevented.
This, then, substantially increases the reliability of threaded connections, and the safety as well as holding force of threaded connection.
FIELD OF THE INVENTION.
The present invention relates to a system to couple together a load and a transport system~ in which the load is extremely heavy, for example in the order of tons, S so that the load can be transported, for example by a crane, or the like, for positioning or removal from a predetermined position.
BACR~ROUND.
Systems to lift heavy structures, and particularly heavy mechanical structures such as complete printing machines, usually employ a liftable transport beam, or a plurality of transport beams, which can be releasably connected to rigid structures of the printing machine or station which is to be moved. Usually, screw connections are employed, in which one or more heavy bolts are connected to the printing machine station, to be fitted into suitable reception openings in a carrier beam, and then connected by nuts or the like to the carrier beam. Assembling the carrier beam for transport to a printing station, which may have to be replaced, for example for service, replacement of cylinders, retrofitting or the like, is time-consuming and labor-intensive, requiring at least three, and usually four operators. To align, for example with a crane, a transport beam with the projecting bolts from the machine system is complicated and it frequently happens that the projecting bolts are damaged, which further increases the time and effort in moving the printing machine system.
THE INVE~TIO~.
.
It is an object to provide a releasable lifting system for extremely heavy loads, for example printing machine stations, which can be easily coupled and uncoupled, without damage, or danger of damage to the coupling arrangement used in the system.
Briefly, the printing machine system is formed with ao a holder projection which has an enlarged, essentially mushroom-shaped head, extending, for example, from selected positions on top of the side:walls of the printingmachine station.
These side walls are thick steel plates, for example several inches thick, and hence extremely heavy. A grip?er element extends, for example by a bolt connection, from the lifting or transport member, for example a transport beam, and located on the transport beam in position to fit on and over the head. A releasable locking arrangement is provided, coupled to the gripper element, which engages underneath the enlarged, essentially mushroom-shaped head, and thus releasably coupling together the holder projection and the gripper element.
The upper portion of the holder projection can be rounded or tapered, so that the gripper element, which can be in sleeve or bell shape, will self-align over the holder projection. Typically, a plurality of such coupling elements are provided; each one of them can be readily constructed to support 20 metric tons or more.
In accordance with a feature of the invention, the releasable locking means is formed by a sleeve, rotatably engaging a plurality of balls to fit under the mushroom-shaped head, when engaged, or to permit release therefrom when disengaged. This provides for direct load transfer of the holder projection or, rather, the head thereof, tn the gripper element, reaching thereover, without introducing substantial lateral forces.
DRAWINGS:
Fig. 1 is a schematic side view, partly in section, showing the lifting system and the coupling arrangement, in released position, that is, before the lifting system is engaged;
Fig. 2 is a view similar to Fig. 1, in which the coupling arrangement is engaged, so that the heavy load is ready to be lifted; and Fig. 3 is a developed highly schematic side view of a portion of the locking arrangement to show, in detail, the lock which is provided, and omitting all features not necessary for an understanding of the specific detail illlustration.
DETAILED DESCRIPTION.
Referring first to Fig. 1: A transport beam 1 is placed in position to lift a printing station, only a fraction of a top wall thereof being shown, schematically, at 3. The beam 1 ;,,~J~, 3 !~, j and the printing station 3 are coupled together by a coupling arrangement 2. Of course, a plurality of such coupling arrangements will be provided along the length of the beam 1, as well as on the printing station 3, to distribute the load, S and to maintain the balance of the printing station.
In accordance with a feature of the invention, the coupling arrangement 2 has an enlarged, essentially mushroom-shaped element 4, secured to the printing station 3, and an essentially bell-shaped gripper element 5 which reaches over the head 10 of the holder element 4. Of course, the position of the elements 4 and 5 can be reversed, although the arrangement as shown in the drawings is preferred since, then, the locking of the bell-shaped gripper element 5 will be assisted by gravity.
In accordance with a feature of the invention, the gripper element 5 is a hollow cylinder, which merges into a threaded bolt-like extension 16 (Fig. l), the other end of which is secured by a nut 16a to the beam 1, preferably with interposition of an underlay or a washer, as well known.
The bell-shaped gripper element 5 is formed with an extension bell or wall 6, of essentially sleeve-like form.
A clamping or locking sleeve 7 surrounds the wall 6 of the gripper element 5. Radial bores 8 areformed in the wall 6 of the gripper element. Locking balls9 are located in the radlal bores. To prevent the balls 9 from falling out, the radial bores 8 are slightly constricted in the region adjacent the inner surface of the wall 6, for example by forming a slightly constricted edge, so that the balls 9 cannot fall through the bores 8 into the interior of the bell-shaped gripper element upon removal of the head 4. Towards the outside, the balls 9 are secured in position by the sleeve 7 which, together with the bores 8 and the balls 9, forms a locking arrangement. Other systems can be used and, in accordance with another suitable and desirable form of the invention, spring elements can be fitted in the bores 8 in which the balls 9 are pressed into a recess 9a formed in the sleeve 7, that is, tending to move the balls9 in the bores 8 in an axially outward direction.
The mushroom-shaped holder or holding elements 4 are each formed as a screw bolt with an expanded head 10, a shaft 11, and a base 12. The expanded head 10 has a substantially larger diameter than the shaft 11. Its outer side, that is, the surface remote from the base 12, forms a frusto-conical surface 13; alternatively, the surface 13 can be rounded, or entirely conical. The surface 14 of the head 10 facing the base 12, likewise, is shaped as a conical ring surface.
The base 12 has hexagonal shape, capable of being gripped by a wrench, and merges at its lowest extremity into a threaded bolt 15, adapted to be threaded into a suitable bore at an upper portion of the load 3 to be lifted. Other connections are also suitable. In accordance with another, equally preferred feature of the invention, the surface, and particularly at the lower region 14 thereof, can be cylindrical if the bores 8 in the wall 6 have spring elements therein tending to urge the balls 9 outwardly.
The locking sleeve 7 is held in its upper position (Fig. 1) by enga8ement of a pin 17 secured to the sleeve 7 in a channel 18. The channel 18 is best seen in detail in Fig. 3, and formed by a part-channel 181, extending parallel to the axis of the cylindrical or bell-shaped portion 6;
Extending laterally from the duct or groove 181 is a part-groove 182 which, then, merges into an enlarged portion 183, having a depression parallel to the part-groove or c'aannel 181 The part or laterally extending portion 182 extends at right angle from the part-groove 181. The pin 17 extending inwardly from the locking sleeve 7 is, for example, a set screw or threaded pin. This pin 17 is secured in position, after having been screwed into the matching hole in the sleeve 7, by a suitable thread adhesive, for example by introducing "Loctite" (Reg. TM), so that unintended removal of the pin 17 is prevented. The pin 17 guides the locking sleeve 7, and holds the locking sleeve 7 in position when it is shifted on the wall 6 of the bell-shaped gripping element 5. The threaded pin 17 and its guide and locking duct or groove 18, together, form a locking arrangement similar to a bayonet lock.
The lower position of the clamping sleeve 7 is detarmined by a groove 21 formed at the outer surface of the wall 6, close to the lower edge thereof.
The end portion of the wall 6 is slightly enlarged, so that the sleeve 7 cannot be removed downwardly. A safety bore 20, formed in the locking sleeve 7 which may, for example, retain a spring-loaded ball or the like,or a pin, is operatively associated with the groove 21, to securely hold the sleeve 7 in the lower position when moved thereto.
The upper position of the clamping sleeve 7 is defined by a safety ring l9, for example a C-ring, snapped into a suitable circumferential groove on the wall 6 of the gripper elements 5. The safety ring l9 prevents escape of the threaded pin 17 from the duct or groove 18;
f.~ ,1,''J~
the safety ring 19 is located spaced downwardly from the bolt-like extension 16 of the gripper element 5.
Opera_ion:
The holder elements 4 are secured to the upper wall of the printing station or other load 3, preferably during manufacture or final assembly thereof, to project vertically upwardly therefrom, as best seen in Figs. 1 and 2. They may remain there until the printing system or printing station, is located at its final operating position, for example on a suitable concrete base. To transport the printing station to the operating location, the gripper elements 5 are secured to the transport beam 1, spaced and positioned to fit over the projecting holder elements 4.
To move the printing systems, or other heavy load 3, the transport beam 1 is so located that each one of the bell-shaped gripper elements 5 will fit over the associated holder element 4. The clamping sleeve 7 of each one of the gripper elements is in an upper position. The locking balls 9 do not extend into the interior of the gripper element 5, as seen in Fig. 1.
The transport beam 1 is then lowered, counter the direction of the arrow LF which, schematically, represents a lifting force which can be applied on the beam 1. When the transport beam 1 is completely lowered, so that the gripper elements 5 surround the holding elements 4, the coupling sleeve 7 of the coupling arrangement 2 is shifted downwardly. This shifts the locking ball 9 into the interior of the gripping elements and under the head 10 of the holder elements 4 to lock it in the interior of the gripper elements 5 -see Fig. 2. The clamping sleeve 7 is then locked in position;
~ ~3 ~
this may be achieved by a spring-loaded ball; or, pr~ferably, a separate locking ele~ent is intr~duc~d through th~ bor~ 20 to e~gage in the saf~ty groove 21. Such a locking element, which may include a visible tag to show that the clamping sleev~ 7 is s~curely lock~d, may for ~xample be a separately r~movabl~
spring pin or the like. Its only function is to hold the sl~eve 7 in position; it does not car~y any load.
The transport beam l can then be lifted by applying a lifting force in accordance with the arrow LF therato, for example by raising a crane, hoist or the like.
After moving the load 3 to the desired position, and to release the coupling syRtem 2, the safety element from the sleeve 7 is removed, permitting the sleeve 7 to be pushed upwardly. When, then, the beam l is again raised, thus raising the gripper element 5, the lower conical surface 14 on the holder element push~s the bal~ 9 into the recess 9a of the sleeve 7 through the bores 8 of the wall 6 to release the balls 8 from position heneath the expanded head 10 of the holder element 4. This, then, permits complete separation of the gripper element 5 from the holder element 4. The number of locking balls 9 in the gripper element 5 is determinad by the load to be carried, as well as the size, that is, essentially, the diameter of the coupling system 2.
In the embodiment illustrated in Fig. 1, eight balls are uniformly circumferentia-lly located within the wall 6.
The carrying capacity of such a coupling system i9 in the order of about 20 metric tons.
A suitable diameter for the cylindrlcal portion ll of the holder element 4 is: 56 mm.
A suitable diameter for the head 10 of the holder element 4 is: 73 n-~.
~ ~ .3 ~ 3 The system, in locked position for lifting, is best seen in Fig. 2. As clearly seen, the geometry of the head portion 11 prevents vertical shifting of the load, since the weight of the load results in an inclined force component, with respect to the axis of the holder element 4, due to the conical surface 14, which inclined component provides a clamping force for the sleeve.
The system has numerous advantages, namely:
(1) Damage to any threads of bolts, which are used in order to lift the heavy load 3, is reliably prevented.
This, then, substantially increases the reliability of threaded connections, and the safety as well as holding force of threaded connection.
(2) The system can be aligned, and easily locked in position by two operators.
(3) The time required to couple the system to the load 3 is substantially reduced; thus, any shipping times for heavy loads can be reduced.
(4) The assembly of each one of the elements is essentially self-centering so that movement of the heavy and frequently difficult to handle loading beam 1 with respect to the load 3 is much faster than heretofore; the conical or rounded upper surface 13 of the holder elements 4 ensures rapid alignment of the gripper elements 5 on the beam 1.
Various changes and modifications may be made within the scope of the inventive concept.
Various changes and modifications may be made within the scope of the inventive concept.
Claims (13)
1. Coupling system for a heavy load lifting system to, releasably, couple a heavy load (3), optionally a printing machine station, to a removable transport member (21), said removable transport member being capable of being lifted (LF), comprising:
a plurality of coupling means (2) for releasably connecting said transport member (1) to the load member (3), comprising, in accordance with the invention, a holder projection (4) formed with an enlarged, essentially mushroom-shaped head (10) extending from one (3) of said members;
a gripper element (5) extending from the other (1) of said member and positioned to fit on and over said head (10);
and releasable locking means (7, 8, 9) coupled to the gripper element (5) engageable under said enlarged head (10) to lock together the gripper element (5) and the holder projection (4).
a plurality of coupling means (2) for releasably connecting said transport member (1) to the load member (3), comprising, in accordance with the invention, a holder projection (4) formed with an enlarged, essentially mushroom-shaped head (10) extending from one (3) of said members;
a gripper element (5) extending from the other (1) of said member and positioned to fit on and over said head (10);
and releasable locking means (7, 8, 9) coupled to the gripper element (5) engageable under said enlarged head (10) to lock together the gripper element (5) and the holder projection (4).
2. The system of claim 1, wherein said gripper element (5) is essentially bell shaped and includes:
a hollow, essentially cylindrical wall (6);
an axially shiftable clamping sleeve (7) surrounding said wall (6);
radial bores (8) extending through said wall (6);
and locking balls (9) movable in said radial bores and engageable under the enlarged head (10).
a hollow, essentially cylindrical wall (6);
an axially shiftable clamping sleeve (7) surrounding said wall (6);
radial bores (8) extending through said wall (6);
and locking balls (9) movable in said radial bores and engageable under the enlarged head (10).
3. The system of claim 2, wherein said clamping sleeve (7) is formed with a circumferential recess (9a) to permit escape of the balls from beneath said head (10) upon release of said system.
4. The system of claim 1, wherein said holder projection (4) comprises a base at a portion removed from said essentially mushroom-shaped head (10), said base being secured to said heavy load (3) to project therefrom, optionally a side wall of a printing machine station.
5. The system of claim 1, wherein said essentially mush-shaped head (10) is formed with an essentially frusto-conical surface at the upper, free end thereof.
6. The system of claim 1, wherein said essentially mushroom-shaped head (10) is formed with an essentially conical surface (14) at a side thereof facing the load.
7. The system of claim 2, wherein said essentially mushroom-shaped head (10) is formed with an essentially frusto-conical surface at the upper, free end thereof.
8. The system of claim 3, wherein said essentially mushroom-shaped head (10) is formed with an essentially frusto-conical surface at the upper, free end thereof.
9. The system of claim 2, wherein said essentially mushroom-shaped head (10) is formed with an essentially conical surface (10) at a side thereof facing the load.
10. The system of claim 3, wherein said essentially mushroom-shaped head (10) is formed with an essentially conical surface (10) at a side thereof facing the load.
11 . The system of claim 2, including means (14) for urging said balls radially outwardly upon release of the gripper element from the holder projection.
12. The system of claim 11, wherein said outward urging means comprises a conical surface (14) formed on said essentially mushroom-shaped head in a region beneath said head; and said clamping sleeve (7) is formed with a recess (9a) for receiving said balls when being urged radially outwardly.
13. The system of claim 1, wherein said heavy load comprises a side wall (3) of a printing machine;
and wherein said holder projection (4) with said essentially mushroom-shaped head (10) is secured to an upper portion of the side wall of the printing machine to project upwardly therefrom by a screw connection.
and wherein said holder projection (4) with said essentially mushroom-shaped head (10) is secured to an upper portion of the side wall of the printing machine to project upwardly therefrom by a screw connection.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEP4013228.5 | 1990-04-26 | ||
| DE19904013228 DE4013228C1 (en) | 1990-04-26 | 1990-04-26 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2038048A1 true CA2038048A1 (en) | 1991-10-27 |
Family
ID=6405080
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2038048 Abandoned CA2038048A1 (en) | 1990-04-26 | 1991-03-12 | Heavy-load lifting system |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP0453799A1 (en) |
| JP (1) | JPH04223991A (en) |
| CA (1) | CA2038048A1 (en) |
| DE (1) | DE4013228C1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10288211B2 (en) | 2015-08-24 | 2019-05-14 | Tkr Spezialwerkzeuge Gmbh | Transport system for motor vehicle engines |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2261650A (en) * | 1991-11-21 | 1993-05-26 | Lanesfield Engineering Seals L | Lifting pin |
| DE4237647A1 (en) * | 1992-11-07 | 1994-05-11 | Krupp Industrietech | Transfer device |
| JP2000145738A (en) * | 1998-11-09 | 2000-05-26 | Takano Co Ltd | Joining structure |
| DE10146057B4 (en) * | 2001-09-19 | 2018-11-08 | Bayerische Motoren Werke Aktiengesellschaft | Device for handling transmissions |
| DE102010019833B4 (en) * | 2010-05-08 | 2014-02-13 | Audi Ag | Device for anchoring a stop means on an object to be transported |
| RU2525191C1 (en) * | 2012-12-19 | 2014-08-10 | Открытое акционерное общество "Центральное конструкторское бюро машиностроения" | Gripping device |
| DE102013014145B4 (en) * | 2013-08-23 | 2018-05-17 | Dg Flugzeugbau Gmbh | Secured locking system |
| RU2581100C1 (en) * | 2014-10-31 | 2016-04-10 | Открытое Акционерное Общество "Акмэ-Инжиниринг" | Guide device for extraction of lateral reflectors |
| DE102016010913B4 (en) | 2016-09-08 | 2021-11-11 | Liebherr-Werk Ehingen Gmbh | System for handling lattice pieces |
| CN107539875B (en) * | 2017-10-19 | 2024-04-19 | 张家港凯航通力船用设备有限公司 | Lifting appliance for steel structural member with holes |
| GB2569551A (en) * | 2017-12-19 | 2019-06-26 | Tophat Industries Ltd | Lifting system |
| RU189775U1 (en) * | 2019-02-04 | 2019-06-04 | Федеральное государственное унитарное предприятие "Горно-химический комбинат" (ФГУП "ГХК") | CAPTURE OF THE FLOOR MACHINE FOR OVERLOADING HEAT-BREAKING ASSEMBLIES |
| DE102020201341A1 (en) | 2020-02-04 | 2021-08-05 | Zf Friedrichshafen Ag | Method for grasping and moving in a lifting direction a component having a protruding socket by means of a lifting tool and a lifting tool with a plurality of gripping elements for grasping and moving in a lifting direction a component having a projecting socket |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1535022A (en) * | 1923-11-23 | 1925-04-21 | Cloyed M Jenkins | Motor-hoisting hitch |
| FR918279A (en) * | 1945-08-07 | 1947-02-04 | Handling device with automatic action for gripping and placing one or more objects | |
| US2751229A (en) * | 1953-11-16 | 1956-06-19 | Arthur B Schultz | Releasable gripper for holding an article suspended |
| DE1284526B (en) * | 1963-08-22 | 1968-12-05 | Maschf Augsburg Nuernberg Ag | Gripper for gripping nuclear reactor fuel elements |
| FR1455161A (en) * | 1965-06-18 | 1966-10-14 | Etudes De Machines Speciales | Improvements to rotary wet-offset printing machines |
| DE1800789A1 (en) * | 1967-10-10 | 1969-10-16 | Combustion Eng | Coupling device for control rods of nuclear reactors |
| DE1922426A1 (en) * | 1969-05-02 | 1970-11-05 | Krupp Gmbh | Device for lifting and lowering a load |
| US4431223A (en) * | 1982-07-01 | 1984-02-14 | Deere & Company | Engine lift tool |
-
1990
- 1990-04-26 DE DE19904013228 patent/DE4013228C1/de not_active Expired - Lifetime
-
1991
- 1991-03-12 CA CA 2038048 patent/CA2038048A1/en not_active Abandoned
- 1991-03-27 EP EP91104868A patent/EP0453799A1/en not_active Withdrawn
- 1991-04-23 JP JP9205291A patent/JPH04223991A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10288211B2 (en) | 2015-08-24 | 2019-05-14 | Tkr Spezialwerkzeuge Gmbh | Transport system for motor vehicle engines |
Also Published As
| Publication number | Publication date |
|---|---|
| DE4013228C1 (en) | 1991-06-27 |
| EP0453799A1 (en) | 1991-10-30 |
| JPH04223991A (en) | 1992-08-13 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| FZDE | Dead |