EP3216742A1 - Kran mit automatischem verstellbarem spannmechanismus - Google Patents

Kran mit automatischem verstellbarem spannmechanismus Download PDF

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Publication number
EP3216742A1
EP3216742A1 EP17159998.8A EP17159998A EP3216742A1 EP 3216742 A1 EP3216742 A1 EP 3216742A1 EP 17159998 A EP17159998 A EP 17159998A EP 3216742 A1 EP3216742 A1 EP 3216742A1
Authority
EP
European Patent Office
Prior art keywords
shaft
crane
shoe
locking
female
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.)
Granted
Application number
EP17159998.8A
Other languages
English (en)
French (fr)
Other versions
EP3216742B1 (de
Inventor
Ronen Gomani
Timor Shefi
Itamar Goete
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from US15/065,949 external-priority patent/US9617125B2/en
Application filed by Individual filed Critical Individual
Publication of EP3216742A1 publication Critical patent/EP3216742A1/de
Application granted granted Critical
Publication of EP3216742B1 publication Critical patent/EP3216742B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • B66C23/18—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 specially adapted for use in particular purposes
    • B66C23/20—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 specially adapted for use in particular purposes with supporting couples provided by walls of buildings or like structures
    • B66C23/201—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 specially adapted for use in particular purposes with supporting couples provided by walls of buildings or like structures with supporting couples provided from above, e.g. by ceilings of buildings

Definitions

  • the present invention refers to a portable and collapsible crane that can be secured tightly to the ceiling and floor of the work site using a spring and a pressure arm such that the greater the load on the crane's hoisting arm, the tighter the crane is fixed to the ceiling and floor.
  • work room It is often necessary to use a crane to lift and move loads in buildings, production floors, rooms, and other such spaces. It is customary to fix such cranes to the work room floor and ceiling by drilling holes in the floor and ceiling and securing the crane with bolts or screws.
  • drilling holes in the work room ceiling and floor obviously poses an aesthetic problem and sometimes even a safety risk.
  • it is unsafe to use cranes that are fixed to the ceiling and floor by means of a spring since when heavy loads are hoisted, the tightening force of the spring may be insufficient to secure the crane to the work room ceiling and floor.
  • the present invention offers a good and effective solution to the abovementioned problems.
  • the main objective of the present invention is to provide a portable and collapsible hoisting crane that includes an automatic adjustable tightening mechanism that fixes and secures the crane to the work room floor and ceiling by means of a spring and a pressure arm.
  • the said mechanism is designed so that the heavier the load on the crane, the tighter the crane is fixed to the floor and ceiling of the work room, Thus, the crane is fixed and secured to the ceiling and floor with a force that corresponds to the weight of the load on the crane at any given time.
  • the hoisting crane (1) is depicted in general in Drawings Nos. 1 and 2, and it comprises a male shaft (2), a female shaft (3), a locking shaft (4), a tightening spring (5), a hoisting arm (6), a pressure arm (7), a top shoe (81), a bottom shoe (82), a top bearing (91), and a bottom bearing (92).
  • the components of the crane (1) can and should be made of rigid, strong, and light materials.
  • the male shaft (2) is, in general, a long rod with several holes (21) in its upper end.
  • the bottom (22) of the male shaft (2) is attached to the bottom bearing (92), and the bottom bearing (92) is attached to the bottom shoe (82) in a way that enables the male shaft (2) to rotate around its axis while the bottom shoe (82) remains fixed and does not rotate.
  • Drawing No. 3 depicts the male shaft (2), which is attached to the bottom bearing (92), which in turn is attached to the bottom shoe (82).
  • the female shaft (3) is, in general, a long, hollow rod with a top opening (32) and a bottom opening (31) through which the male shaft (2) may be inserted into the female shaft (3).
  • the female shaft (3) has an internal stopper in its upper part, which may be an internal protrusion (33), an external support means, which may be an external protrusion (34), and a locking hole (35) in its bottom part.
  • Drawing No. 4 depicts the female shaft (3) with the abovementioned components.
  • the locking shaft (4) is a relatively short rod.
  • the top end (41) of the locking shaft (4) is attached to the top bearing (91), which in turn is attached to the top shoe (81) in such a way that enables the locking shaft (4) to rotate around its axis while the top shoe (81) remains fixed and does not rotate.
  • the bottom end (42) of the locking shaft (4) is attached to a spring (5), as depicted in Drawing No. 5.
  • the hoisting arm (6) is a long rod and the pressure arm (7) is a relatively short rod, as depicted in the drawings.
  • the locking shaft (4) is inserted into the female shaft (3) through the top opening (32) until the spring (5) is stopped by the internal protrusion stopper (33).
  • the upper end (23) of the male shaft (2) is inserted into the female shaft (3) through the bottom opening (31) until the top shoe (81) is tightly secured against the ceiling and the bottom shoe (82) is tightly secured against the floor.
  • the locking shaft (4) is inserted into the upper part of the female shaft (3).
  • the invention may, however, also be implemented such that the locking shaft (4) is inserted over the female shaft (4) in such a way that the spring (5) is stopped by some external stopper such as an external stopping protrusion.
  • the bearings (91) (92) may be positioned in different locations on both the locking shaft (4) and the male shaft (2), in a way that permits horizontal rotation of the hoisting arm (6) without rotating the shoes (81) (82).
  • the hoisting crane (1) is relatively light weight, collapsible and portable, and can be easily transported in the trunk of a standard vehicle without taking up much space. It can be assemble easily and quickly in the work room wherever it is needed, without drilling holes in the work room floor or ceiling, and it can be secured and tightened easily, with a tightening force that changes according to the load on the hoisting crane (1) itself.
  • the second version of the Hoisting Crane (10) is described in Figs 8 - 12 and it comprises a male shaft (2), a female shaft (3), a locking shaft (4), a tightening spring (5), a hoisting arm (6), a top shoe (81), a bottom shoe (82), a top bearing (91), and a bottom bearing (92).
  • the second version of the Hoisting Crane is also includes a diagonal supportive rod (20) and it does not includes a pressure arm.
  • the top end (201) of the rod 20 is attached to the hoisting arm (6) and its bottom end (202) is attached to the bottom bearing (92) and alternatively it can be attached to the bottom end of the male shaft (2).
  • the rod (20) observed part of the vertical pressure of the hoisting arm (6) any by that provide more stability to the Hoisting Crane (10) in general.
  • the rear part (61) of the hoisting arm (6) is attached by means of an axial joint (30) to the locking shaft (4).
  • the locking shaft (4) is assembled over the female shaft (3) until the spring (5) is stopped by the top end (31) of the female shaft (3).
  • the locking shaft (4) is also described in FIG. 11 , and it may include a vertical rod (44) on which the spring (5) is assembled, and a stopper (43) which is designed to stop the spring (5) which is tighten upward.
  • the spring (5) is not active when the Hoisting Crane (10) is in used, and its main function is when the user fixes and tightens the hoisting crane. The user pushes the female shaft (3) upwardly and the male shaft (2) downwardly until the spring is pressed between the stopper (43) and the top end of the female shaft (3) and the pressed spring (5) locks the Hoisting Crane (10) to the floor and the ceiling.
  • the "bearing" (91) (92) components of both versions of the hoisting cranes can be replaced by any other means that serve in same function, such as a spherical joint based on principle of s mortar and pestle or any other kind.

Landscapes

  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Civil Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Jib Cranes (AREA)
EP17159998.8A 2016-03-10 2017-03-09 Kran mit automatischem verstellbarem spannmechanismus Active EP3216742B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US15/065,949 US9617125B2 (en) 2015-02-24 2016-03-10 Crane with automatic adjustable tightening mechanism

Publications (2)

Publication Number Publication Date
EP3216742A1 true EP3216742A1 (de) 2017-09-13
EP3216742B1 EP3216742B1 (de) 2020-12-09

Family

ID=58265857

Family Applications (1)

Application Number Title Priority Date Filing Date
EP17159998.8A Active EP3216742B1 (de) 2016-03-10 2017-03-09 Kran mit automatischem verstellbarem spannmechanismus

Country Status (1)

Country Link
EP (1) EP3216742B1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112479053A (zh) * 2020-11-30 2021-03-12 向余胜 一种建筑外墙安装的吊装设备
CN115196502A (zh) * 2022-03-08 2022-10-18 江苏鼎力重工集团有限公司 高稳定高精度新能源电池包吊运输送系统

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2985430A (en) * 1959-08-07 1961-05-23 Greenwood Gorman Winch
DE1121294B (de) * 1960-02-05 1962-01-04 Karl Gespers Fensterkran
JPS51139564U (de) * 1975-04-30 1976-11-10
DE3707005A1 (de) * 1987-03-05 1988-09-15 Weiner Rudolf Ortsfester krankenlift

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2985430A (en) * 1959-08-07 1961-05-23 Greenwood Gorman Winch
DE1121294B (de) * 1960-02-05 1962-01-04 Karl Gespers Fensterkran
JPS51139564U (de) * 1975-04-30 1976-11-10
DE3707005A1 (de) * 1987-03-05 1988-09-15 Weiner Rudolf Ortsfester krankenlift

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112479053A (zh) * 2020-11-30 2021-03-12 向余胜 一种建筑外墙安装的吊装设备
CN112479053B (zh) * 2020-11-30 2022-08-09 向余胜 一种建筑外墙安装的吊装设备
CN115196502A (zh) * 2022-03-08 2022-10-18 江苏鼎力重工集团有限公司 高稳定高精度新能源电池包吊运输送系统

Also Published As

Publication number Publication date
EP3216742B1 (de) 2020-12-09

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