CA1235075A - Hydraulic crane aerial platform attachment - Google Patents
Hydraulic crane aerial platform attachmentInfo
- Publication number
- CA1235075A CA1235075A CA000476925A CA476925A CA1235075A CA 1235075 A CA1235075 A CA 1235075A CA 000476925 A CA000476925 A CA 000476925A CA 476925 A CA476925 A CA 476925A CA 1235075 A CA1235075 A CA 1235075A
- Authority
- CA
- Canada
- Prior art keywords
- basket
- boom
- platform
- crane
- movement
- 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
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F11/00—Lifting devices specially adapted for particular uses not otherwise provided for
- B66F11/04—Lifting devices specially adapted for particular uses not otherwise provided for for movable platforms or cabins, e.g. on vehicles, permitting workmen to place themselves in any desired position for carrying out required operations
- B66F11/044—Working platforms suspended from booms
- B66F11/046—Working platforms suspended from booms of the telescoping type
Landscapes
- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mechanical Engineering (AREA)
- Forklifts And Lifting Vehicles (AREA)
- Jib Cranes (AREA)
Abstract
ABSTRACT OF THE DISCLOSURE
An aerial platform is pivotally attached to the boom tip of a hydraulic crane. The pivotal suspension permits the platform to remain level as the crane boom is elevated, while the pinned connection to the cross-shafts allow the attachment to be readily removed and re-installed. The platform includes a basket and is positioned adjacent to the boom tip so that tools or other light materials may be exchanged between the ground and the basket by means of the whip line on the crane. A dash pot, preferably in the form of an automotive shock absorber, attached between the bracket and the platform controls the rate of movement and hence prevents any sudden rotational movement of the platform relative to the boom tip as the boom is elevated into a desired working position. A hand operated brake is provided to prevent rotation of the platform relative to the boom tip while the platform occupied and in a working position. A device for storing the platform while attached to the boom tip so that the crane remain operable for certain uses and may also be transported in a normal manner is also provided.
An aerial platform is pivotally attached to the boom tip of a hydraulic crane. The pivotal suspension permits the platform to remain level as the crane boom is elevated, while the pinned connection to the cross-shafts allow the attachment to be readily removed and re-installed. The platform includes a basket and is positioned adjacent to the boom tip so that tools or other light materials may be exchanged between the ground and the basket by means of the whip line on the crane. A dash pot, preferably in the form of an automotive shock absorber, attached between the bracket and the platform controls the rate of movement and hence prevents any sudden rotational movement of the platform relative to the boom tip as the boom is elevated into a desired working position. A hand operated brake is provided to prevent rotation of the platform relative to the boom tip while the platform occupied and in a working position. A device for storing the platform while attached to the boom tip so that the crane remain operable for certain uses and may also be transported in a normal manner is also provided.
Description
I
This invention relates generally to aerial platforms and, more particularly, to such platforms which may be attached to and used with hydraulic cranes.
The present invention provides an aerial platform which is pivotal suspended from a bracket pinned to the cross-shafts projecting beyond a side plate on the boom tip of a hydraulic crane. The pivotal suspension permits the platform to remain level as the crane boom is elevated, while the pinned connection to the cross-shafts allow the attachment to be readily removed and reinstalled. The platform includes a basket and is positioned adjacent to the boom tip so that tools or other light materials Jay be exchanged between the ground and the basket by means of the whip line on the crane. A dash pot, preferably in the form of an automotive shock absorber, attached between the bracket and the platform controls the rate of movement and hence prevents any sudden rotational movement of the platform relative to the boom tip as the boom is elevated into a desired working position. A hand operated brake is provided to prevent rotation of the platform relative to the boom tip while the platform is occupied and in a working position. A
means for storing the platform while attached to the boom tip so that the crane remains operable for certain uses and may also be transported in a normal manner is also provide.
Other attributes and advantages of the present invention will become more readily apparent from a perusal of the following description and the accompanying drawings wherein:
Figure 1 is a side elevation Al view of a hydraulic crane with the present invention attached thereto;
Figure 2 is a detailed view of the attachment shown in Figure l;
Figure 3 is a view taken on line 3~3 of Figure 2 with portions broken away and eliminated; and Figure 4 is an expanded view of a preferred I' embodiment for the brake mechanism utilized in the present invention.
Referring to Figure 1, there is shown a hydraulic crane, indicated generally at 10, having a multi-section, extendible boom 12 pivotal mounted on the crane's upper 14. The upper is rotatable about a vertical axis on the lower 16. As illustrated in Figure 1, the entire crane 10 is supported for stability on outrigger jacks 18, which tray be retracted to permit the wheels 20 on the lower 16 to engage the ground for transport in a conventional manner. Hydraulic cylinder means 22 is connected between the boom 12 and the upper 14. With both the boom and the cylinder means 22 fully retracted, the boom 12 is oriented as indicated by solid lines and when both the boom and the cylinder means are fully extended, the boom 12 is configured as indicated by dotted lines in Figure 1.
An aerial platform 23 is pivotal suspended from a boom tip 24 secured on the free end of the outer section of the boom 12. An auxiliary hoist 26 mounted on the upper 14 has a wire rope 28, commonly referred to as a whip line, wound thereon and trained over a sheave 30, as shown in Figure 2, rotatable carried on a cross-shaft between the side plates, one of which is shown at 32, of the boom tip 24 and an auxiliary sheave 34 on a shaft cantilevered from the tip 24 by means of arm 36. A hook 38 is attached to the free end of the wire rope 28. Since both the platform 23 and the auxiliary sheave 34 are suspended from the boom tip 24, the hook 38 will, as it approaches the boom tip as a result of the auxiliary hoist reeling in the wire rope 28, be in close proximity to the platform 23 to enable a worker oil the platform to remove or attach material from or to the hook.
Referring now to Figures 2 and 3, a pair of cross-shafts 40 and 42 project beyond the wide plates 32.
A bracket 44 has a pair of tubes 46 and 48 secured thereon which tubes engage the ends of the cross-shafts 40 and 42 respectively. The tubes are cross-bored in alignment with bores provided in end fittings on the cross-shafts, one of which is shown at 50. A pair of pins, one of which is shown at 52 inserter through the tube 48 and the fitting 50, releasable secure the bracket 44 to the boom tip 24.
The aerial platform 23 includes a basket 54, preferably constructed ox an electrically non-conducting material, such as f fiberglass, secured to a suspension link 56. The link 56 is pivotal connected to the bracket 44 by means of a pivot pin 58 attached to the link 56 and rotatable retained within a bushing 60 provided in the bracket 44.
A dash pot, which may be an automotive shock absorber 62, is pivotal attached at 64 to the bracket 44 and at 66 to an arm 68 secured to the link 56. Rotation of the link 56 clockwise, is viewed in Figure 2, will cause extension of the shock absorber 62, and rotation in the opposite direction will cause retraction. The shock absorber 62 will control the rate of such rotation, and hence will preclude any sudden rotational movement to the basket 54 while the boom is being elevated or lowered.
Thus, the basket 54 will retain virtually vertical when moved to and from a working position. Movement of the occupant and the shifting of his or her center of gravity resulting therefrom will not cause an unsettling and unexpected sudden rotation of the basket.
A brake, indicated generally at 70, is provided to lock the link 56 relative to the bracket 44. When so locked by engagement of the brake 70, an occupant of the basket is provided with a stable platform from which work may be performed on elevated structures or lines. The brake 70 includes a rotor sector 72 secured to the bracket 44. Calipers 74 carried by a actuating member 76 secured to the lynx I are capable of engaging the rotor sector 72 to lock the link 56 to the bracket 44. An actuating lever 78 rotatable mounted on the member 76 has a central position, wherein the caliber 74 are out of engagement with sector 72 permitting pivoting of the link 56 relative to the bracket 44, and movement in either director from I
its central position causes the caliber 74 to engage to sector 72 thereby locking the link 56 to the bracket 44.
Movement of the actuating levers 78 is controlled by a one way control device 80, such as that made by Quadrastat Controls Corp. The control 80 has an input mean 82 and output means 84. A hand lever 86 is affixed to the input means 82 and the link 88 is pivotal connected between the output means 84 and the actuating lever 78. The control permits rotation of the output means 84 when a force is applied to the lever 86, but precludes such movement when forces are applied to the output means 84.
Consequently, the brake 70 can be released or engaged only through manipulation of the lever 86, and unintentional release or engagement as a result of vibration or other forces applied to the output means 84 will be precluded.
the position of the hand lever 86 when the brake 70 is released is shown by solid lines in Figure 2 and movement of this lever to either of the dotted line positions will cause the break to engage. Thus, should an occupant need to quickly apply the brake 70 he or she would not have to consider which direction to rotate the hand lever; the brake 70 will be engaged with movement in either direction.
In order to store the basket I along side the boom 12, a loop 90 is attached to the side of the basket 54 adjacent to the boom and along the basket's bottom edge. A stabber member 92 is formed on a bracket I
attached to the boom 12. The stabber member 92 engages the loop 90 when the basket is held parallel to the bottom of the boom and the boom is then fully retracted. An inclined surface 96 on the stabber member 92 cams the basket 54 upward to facilitate full engagement of the loop 90 by the stabber member 92 should the basket 54 not be perfectly parallel to the bottom of the boom 12. In order to move and hold the basket in the proper position for engagement of the stabber member 92 with the loop 90, a rope I may be attached to a second loop 98 secured to the basket 54 and passed through a third loop 100 attached to ~35i~
bracket 94. Tension force applied to the rope 95 permits rotation of the basket 54 to its proper position for engagement of the stabber 92 with the loop 90 from a remote position. When the boom is then fully retracted, the stabber 92 will engage the loop 90.
While a preferred embodiment of the present invention has been described and illustrated, it is to be understood that changes and modifications may be made therein without departing from the spirit of the invention is defined by the scope Or the appended claims.
What is claimed is:
This invention relates generally to aerial platforms and, more particularly, to such platforms which may be attached to and used with hydraulic cranes.
The present invention provides an aerial platform which is pivotal suspended from a bracket pinned to the cross-shafts projecting beyond a side plate on the boom tip of a hydraulic crane. The pivotal suspension permits the platform to remain level as the crane boom is elevated, while the pinned connection to the cross-shafts allow the attachment to be readily removed and reinstalled. The platform includes a basket and is positioned adjacent to the boom tip so that tools or other light materials Jay be exchanged between the ground and the basket by means of the whip line on the crane. A dash pot, preferably in the form of an automotive shock absorber, attached between the bracket and the platform controls the rate of movement and hence prevents any sudden rotational movement of the platform relative to the boom tip as the boom is elevated into a desired working position. A hand operated brake is provided to prevent rotation of the platform relative to the boom tip while the platform is occupied and in a working position. A
means for storing the platform while attached to the boom tip so that the crane remains operable for certain uses and may also be transported in a normal manner is also provide.
Other attributes and advantages of the present invention will become more readily apparent from a perusal of the following description and the accompanying drawings wherein:
Figure 1 is a side elevation Al view of a hydraulic crane with the present invention attached thereto;
Figure 2 is a detailed view of the attachment shown in Figure l;
Figure 3 is a view taken on line 3~3 of Figure 2 with portions broken away and eliminated; and Figure 4 is an expanded view of a preferred I' embodiment for the brake mechanism utilized in the present invention.
Referring to Figure 1, there is shown a hydraulic crane, indicated generally at 10, having a multi-section, extendible boom 12 pivotal mounted on the crane's upper 14. The upper is rotatable about a vertical axis on the lower 16. As illustrated in Figure 1, the entire crane 10 is supported for stability on outrigger jacks 18, which tray be retracted to permit the wheels 20 on the lower 16 to engage the ground for transport in a conventional manner. Hydraulic cylinder means 22 is connected between the boom 12 and the upper 14. With both the boom and the cylinder means 22 fully retracted, the boom 12 is oriented as indicated by solid lines and when both the boom and the cylinder means are fully extended, the boom 12 is configured as indicated by dotted lines in Figure 1.
An aerial platform 23 is pivotal suspended from a boom tip 24 secured on the free end of the outer section of the boom 12. An auxiliary hoist 26 mounted on the upper 14 has a wire rope 28, commonly referred to as a whip line, wound thereon and trained over a sheave 30, as shown in Figure 2, rotatable carried on a cross-shaft between the side plates, one of which is shown at 32, of the boom tip 24 and an auxiliary sheave 34 on a shaft cantilevered from the tip 24 by means of arm 36. A hook 38 is attached to the free end of the wire rope 28. Since both the platform 23 and the auxiliary sheave 34 are suspended from the boom tip 24, the hook 38 will, as it approaches the boom tip as a result of the auxiliary hoist reeling in the wire rope 28, be in close proximity to the platform 23 to enable a worker oil the platform to remove or attach material from or to the hook.
Referring now to Figures 2 and 3, a pair of cross-shafts 40 and 42 project beyond the wide plates 32.
A bracket 44 has a pair of tubes 46 and 48 secured thereon which tubes engage the ends of the cross-shafts 40 and 42 respectively. The tubes are cross-bored in alignment with bores provided in end fittings on the cross-shafts, one of which is shown at 50. A pair of pins, one of which is shown at 52 inserter through the tube 48 and the fitting 50, releasable secure the bracket 44 to the boom tip 24.
The aerial platform 23 includes a basket 54, preferably constructed ox an electrically non-conducting material, such as f fiberglass, secured to a suspension link 56. The link 56 is pivotal connected to the bracket 44 by means of a pivot pin 58 attached to the link 56 and rotatable retained within a bushing 60 provided in the bracket 44.
A dash pot, which may be an automotive shock absorber 62, is pivotal attached at 64 to the bracket 44 and at 66 to an arm 68 secured to the link 56. Rotation of the link 56 clockwise, is viewed in Figure 2, will cause extension of the shock absorber 62, and rotation in the opposite direction will cause retraction. The shock absorber 62 will control the rate of such rotation, and hence will preclude any sudden rotational movement to the basket 54 while the boom is being elevated or lowered.
Thus, the basket 54 will retain virtually vertical when moved to and from a working position. Movement of the occupant and the shifting of his or her center of gravity resulting therefrom will not cause an unsettling and unexpected sudden rotation of the basket.
A brake, indicated generally at 70, is provided to lock the link 56 relative to the bracket 44. When so locked by engagement of the brake 70, an occupant of the basket is provided with a stable platform from which work may be performed on elevated structures or lines. The brake 70 includes a rotor sector 72 secured to the bracket 44. Calipers 74 carried by a actuating member 76 secured to the lynx I are capable of engaging the rotor sector 72 to lock the link 56 to the bracket 44. An actuating lever 78 rotatable mounted on the member 76 has a central position, wherein the caliber 74 are out of engagement with sector 72 permitting pivoting of the link 56 relative to the bracket 44, and movement in either director from I
its central position causes the caliber 74 to engage to sector 72 thereby locking the link 56 to the bracket 44.
Movement of the actuating levers 78 is controlled by a one way control device 80, such as that made by Quadrastat Controls Corp. The control 80 has an input mean 82 and output means 84. A hand lever 86 is affixed to the input means 82 and the link 88 is pivotal connected between the output means 84 and the actuating lever 78. The control permits rotation of the output means 84 when a force is applied to the lever 86, but precludes such movement when forces are applied to the output means 84.
Consequently, the brake 70 can be released or engaged only through manipulation of the lever 86, and unintentional release or engagement as a result of vibration or other forces applied to the output means 84 will be precluded.
the position of the hand lever 86 when the brake 70 is released is shown by solid lines in Figure 2 and movement of this lever to either of the dotted line positions will cause the break to engage. Thus, should an occupant need to quickly apply the brake 70 he or she would not have to consider which direction to rotate the hand lever; the brake 70 will be engaged with movement in either direction.
In order to store the basket I along side the boom 12, a loop 90 is attached to the side of the basket 54 adjacent to the boom and along the basket's bottom edge. A stabber member 92 is formed on a bracket I
attached to the boom 12. The stabber member 92 engages the loop 90 when the basket is held parallel to the bottom of the boom and the boom is then fully retracted. An inclined surface 96 on the stabber member 92 cams the basket 54 upward to facilitate full engagement of the loop 90 by the stabber member 92 should the basket 54 not be perfectly parallel to the bottom of the boom 12. In order to move and hold the basket in the proper position for engagement of the stabber member 92 with the loop 90, a rope I may be attached to a second loop 98 secured to the basket 54 and passed through a third loop 100 attached to ~35i~
bracket 94. Tension force applied to the rope 95 permits rotation of the basket 54 to its proper position for engagement of the stabber 92 with the loop 90 from a remote position. When the boom is then fully retracted, the stabber 92 will engage the loop 90.
While a preferred embodiment of the present invention has been described and illustrated, it is to be understood that changes and modifications may be made therein without departing from the spirit of the invention is defined by the scope Or the appended claims.
What is claimed is:
Claims (4)
PROPERTY OR PRIVILEGE IS CLAIMED ARE IDENTIFIED AS FOLLOWS:
1. A latchable aerial platform attachment for a crane having two relatively extendible and retractable inner and outer boom sections, comprising:
a basket pivotally mounted to said outer boom section to suspend therefrom and swingable between a suspended operating position and an inactive position adjacent said boom, means for swinging said basket to said inactive position while said boom sections are relatively extended, first latch means carried by said inner boom section for interengagement with cooperating second latch means on said basket to secure said basket in said inactive position for storage and crane transport, said first and second latch means having elements connectable and detachable solely by axial movement of said basket when in said inactive position prior to final retracting telescoping movement of said inner and outer boom sections, whereby, upon swinging of said basket to said inactive position, further telescoping movement of said boom sections will secure said basket to said crane for storage and transport, while axial separating movement of said boom sections while said basket is in said inactive position will permit said basket to swing to said operating position.
a basket pivotally mounted to said outer boom section to suspend therefrom and swingable between a suspended operating position and an inactive position adjacent said boom, means for swinging said basket to said inactive position while said boom sections are relatively extended, first latch means carried by said inner boom section for interengagement with cooperating second latch means on said basket to secure said basket in said inactive position for storage and crane transport, said first and second latch means having elements connectable and detachable solely by axial movement of said basket when in said inactive position prior to final retracting telescoping movement of said inner and outer boom sections, whereby, upon swinging of said basket to said inactive position, further telescoping movement of said boom sections will secure said basket to said crane for storage and transport, while axial separating movement of said boom sections while said basket is in said inactive position will permit said basket to swing to said operating position.
2. The latchable aerial platform attachment of claim 1, wherein said basket swinging means includes a flexible line attached thereto adjacent the bottom thereof, and means guiding said line proximate said inner boom section latch means.
3. The latchable aerial platform attachment of claim 2, wherein said line guiding means includes a loop adjacent said inner boom means through which said line is trained.
4, The matchable aerial platform attachment of claim 1, 2 or 3, wherein said first and second latch means comprise a fixed rigid projecting member and an open loop, whereby when axially interengaged, swinging movement of said basket is precluded.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US59701084A | 1984-04-05 | 1984-04-05 | |
US597,010 | 1984-04-05 |
Publications (1)
Publication Number | Publication Date |
---|---|
CA1235075A true CA1235075A (en) | 1988-04-12 |
Family
ID=24389680
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA000476925A Expired CA1235075A (en) | 1984-04-05 | 1985-03-19 | Hydraulic crane aerial platform attachment |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP0159543B1 (en) |
JP (1) | JPS60223788A (en) |
AU (1) | AU571663B2 (en) |
CA (1) | CA1235075A (en) |
DE (1) | DE3571425D1 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2644204A1 (en) * | 1989-03-09 | 1990-09-14 | Camiva | TELESCOPIC LADDER WITH AUTOMATIC TILTING OF ITS WORK BASKET IN TRANSPORT AND WORK POSITIONS |
US10194595B2 (en) | 2013-05-30 | 2019-02-05 | Cnh Industrial America Llc | Bale effect linkage and methods of use |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3605941A (en) * | 1969-01-09 | 1971-09-20 | Gen Cable Corp | Aerial lift with rotatable and enclosable basket |
DE2106429A1 (en) * | 1971-02-11 | 1972-08-17 | Carl Metz Gmbh, 7500 Karlsruhe | Device for guiding and / or fixing a pendulum suspended work and / or rescue cage |
DE2107821A1 (en) * | 1971-02-18 | 1972-08-31 | Carl Metz Gmbh, 7500 Karlsruhe | Device for guiding and / or fixing a pendulum suspended work and / or rescue cage |
DE2129856A1 (en) * | 1971-06-16 | 1973-01-04 | Metz Gmbh Carl | EXTENDABLE WORK BASKET AND / OR RESCUE BASKET |
US3710893A (en) * | 1971-06-21 | 1973-01-16 | Bliss & Laughlin Ind | Portable extendible crane with work basket |
BE792745A (en) * | 1971-12-15 | 1973-03-30 | Freen Ltd | TRANSPARENCY PROJECTION SCREEN |
JPS5834883B2 (en) * | 1973-08-22 | 1983-07-29 | 三菱電線工業株式会社 | The best way to get started |
JPS5420801U (en) * | 1977-07-07 | 1979-02-09 | ||
JPS5427761U (en) * | 1977-07-26 | 1979-02-23 | ||
GB1572440A (en) * | 1978-04-06 | 1980-07-30 | Hongisto Oy | Working platform for cranes |
US4334594A (en) * | 1978-12-13 | 1982-06-15 | Mccabe Powers Body Company | Aerial device |
US4427121A (en) * | 1982-05-03 | 1984-01-24 | Clements Shannon K | Hydraulic valve control for aerial book devices |
-
1985
- 1985-03-13 AU AU39809/85A patent/AU571663B2/en not_active Ceased
- 1985-03-19 CA CA000476925A patent/CA1235075A/en not_active Expired
- 1985-03-21 DE DE8585103291T patent/DE3571425D1/en not_active Expired
- 1985-03-21 EP EP19850103291 patent/EP0159543B1/en not_active Expired
- 1985-04-02 JP JP6861585A patent/JPS60223788A/en active Pending
Also Published As
Publication number | Publication date |
---|---|
AU3980985A (en) | 1985-10-10 |
DE3571425D1 (en) | 1989-08-17 |
JPS60223788A (en) | 1985-11-08 |
EP0159543B1 (en) | 1989-07-12 |
EP0159543A3 (en) | 1986-06-25 |
AU571663B2 (en) | 1988-04-21 |
EP0159543A2 (en) | 1985-10-30 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US5586667A (en) | Mobile crane with main and auxiliary counterweight assemblies | |
EP0254510B1 (en) | Extension jib for a boom | |
US3278045A (en) | Counterweight support mechanism | |
US3076560A (en) | Retractible mast and boom stop | |
US4318488A (en) | Method of extending a jib of a telescopic crane | |
JPH1087278A (en) | Mobile crane | |
US4653655A (en) | Crane boom having variable angle offset capability | |
US4653654A (en) | Hydraulic crane aerial platform attachment | |
CA2115418A1 (en) | Mini boom bumper | |
US6065620A (en) | Movable sheave assembly for a crane | |
CA1235075A (en) | Hydraulic crane aerial platform attachment | |
CA1231066A (en) | Two person aerial platform | |
US4412622A (en) | Telescoping strut crane | |
US3134488A (en) | Crane | |
JPH06219688A (en) | Backstop assembly of luffing jib | |
JP6495156B2 (en) | Gravity operated crane stopper | |
US5135118A (en) | Jib hold rod securing device for cranes | |
JP3229743B2 (en) | Jib tip structure | |
US3092260A (en) | Back-hitch gaintry | |
US3282440A (en) | Rigging slinger embodying an extendable and retractable lazy tong boom | |
JP2547044B2 (en) | Jib loading and unloading method and device in crane | |
JP2002371592A (en) | Sling wire connection device of construction equipment | |
CN115043335A (en) | Cable connection support used when cable for hoisting load is stretched in crane | |
JPH0120398Y2 (en) | ||
JPS6136548Y2 (en) |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
MKEX | Expiry |