EP3712101A1 - Chain winding device - Google Patents
Chain winding device Download PDFInfo
- Publication number
- EP3712101A1 EP3712101A1 EP18877740.3A EP18877740A EP3712101A1 EP 3712101 A1 EP3712101 A1 EP 3712101A1 EP 18877740 A EP18877740 A EP 18877740A EP 3712101 A1 EP3712101 A1 EP 3712101A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- chain
- drive means
- control unit
- electric
- suspension tool
- 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.)
- Pending
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D3/00—Portable or mobile lifting or hauling appliances
- B66D3/18—Power-operated hoists
- B66D3/20—Power-operated hoists with driving motor, e.g. electric motor, and drum or barrel contained in a common housing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D1/00—Rope, cable, or chain winding mechanisms; Capstans
- B66D1/28—Other constructional details
- B66D1/40—Control devices
- B66D1/42—Control devices non-automatic
- B66D1/46—Control devices non-automatic electric
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D1/00—Rope, cable, or chain winding mechanisms; Capstans
- B66D1/28—Other constructional details
- B66D1/40—Control devices
- B66D1/48—Control devices automatic
- B66D1/485—Control devices automatic electrical
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D3/00—Portable or mobile lifting or hauling appliances
- B66D3/12—Chain or like hand-operated tackles with or without power transmission gearing between operating member and lifting rope, chain or cable
- B66D3/16—Chain or like hand-operated tackles with or without power transmission gearing between operating member and lifting rope, chain or cable operated by an endless chain passing over a pulley or a sprocket
Definitions
- the present invention relates to a chain winding device.
- an electric chain block can lift a weight multiplied by the number of loops in a suspension manner.
- first and second electric chain blocks are used, and one chain is wound from both sides through a lower suspension tool including a hook and two or more running sheaves and an upper suspension tool including one or more running sheaves, and thus, a suspended load is lifted and lowered by the power of the two electric chain blocks.
- Patent Document 1 JP 2017-132561 A
- Patent Document 1 Since a large-sized electric chain block disclosed in Patent Document 1 includes a chain longer than usual and a plurality of sheaves for structural reason, the ease of replacement of the chain is very poor.
- An object of the present invention is to easily perform a chain replacement operation on a chain winding device.
- a chain winding device that winds a chain with first drive means and second drive means through a lower suspension tool and an upper suspension tool
- the device including a control unit that controls the first drive means and the second drive means, in which in a normal operation of moving a position of the lower suspension tool in an upward and downward direction, the control unit rotates the first drive means and the second drive means in different directions, and in a chain replacement operation of replacing the chain, the control unit rotates the first drive means and the second drive means in the same direction.
- An electric chain block 100 includes an electric motor 1; a speed reduction unit 2; an electromagnetic brake 3; an upper suspension tool 4; a pushbutton switch 5; a chain bucket 6; a sprocket 7; a load block 8; a chain 9; and a control unit 10.
- the upper suspension tool 4 for installing the electric chain block 100 in a suspension manner is attached to the electric chain block 100.
- the electric motor 1 is attached to the electric chain block 100.
- the speed reduction unit 2 for reducing the rotation generated by the electric motor 1 is connected to electric motor 1, and the rotation reduced by the speed reduction unit 2 is transmitted to the sprocket 7.
- the electromagnetic brake 3 for stopping the rotation generated by the electric motor 1 is attached to the electric motor 1.
- the chain 9 meshes with the sprocket 7.
- the load block 8 is attached to one end of the chain 9, and a stopper 11 is attached to the other end thereof.
- the chain bucket 6 is suspended on the electric chain block 100, and the stopper 11 on a lowering side of the chain 9 is accommodated in the chain bucket 6.
- the control unit 10 which controls the operation of the electric motor 1 and the electromagnetic brake 3 is attached to the electric chain block 100.
- the control unit 10 recognizes an input of the operation, and the electric motor 1 is energized and the electromagnetic brake 3 is also energized at the same time, so that the electromagnetic brake 3 is released and the electric motor 1 starts rotating.
- the rotational power of the electric motor 1 is reduced to a predetermined rotating speed by the speed reduction unit 2, the rotation is transmitted to the chain 9 by the sprocket 7 coupled to a final speed reduction stage, and the load block 8 is lifted and lowered via the chain 9. In this way, a suspended load is lifted and lowered.
- a large-sized electric chain block 200 uses the two electric chain blocks 100 illustrated in Fig. 1 as drive means.
- the chain 9 is wound with a first electric chain block (first drive means) 100A and a second electric chain block (second drive means) 100B from both sides through a lower suspension tool 23 including a hook 22 and two or more running sheaves 26 and an upper suspension tool 24 including one or more running sheaves 26. Therefore, a suspended load with a weight corresponding to the number of loops of the chain 9 is lifted and lowered.
- the first electric chain block 100A and the second electric chain block 100B operate to lift and lower the lower suspension tool 23 including the hook 22 and the two or more running sheaves 26. In this way, a suspended load is lifted and lowered.
- the first electric chain block 100A and the second electric chain block 100B rotate in different directions as seen from front.
- the lower suspension tool 23 including the hook 22 and the two or more running sheaves 26 move in an upward direction or a downward direction (the position of the hook 22 is lowered or raised). In this way, it is possible to lift and lower a suspended load.
- the control unit 10 determines that the chain replacement operation mode is activated.
- the control unit 10 determines that the chain replacement operation mode is activated, as illustrated on the left side of Fig. 5 , the first electric chain block 100A and the second electric chain block 100B rotate in the same direction as seen from front.
- the chain 9 is wound to flow from the first electric chain block 100A to the second electric chain block 100B through the lower suspension tool 23 and the upper suspension tool 24.
- the new chain 27 is wound together with the chain 9 via the C link 12.
- the foregoing operation facilitates the chain replacement operation of the large-sized electric chain block 200.
- the chain 9 and the new chain 27 are coupled to each other with the C link 12, and the first electric chain block 100A and the second electric chain block 100B are operated one by one by means such as electric power supply shutoff.
- the chain replacement operation is performed while slacks of the chain 9 and the new chain 27, the slacks occurring in the running sheaves 26, are eliminated with the human hands.
- the control unit 10 determines that the chain replacement operation mode is activated.
- the first electric chain block (first drive means) 100A and the second electric chain block (second drive means) 100B rotate in the same direction as seen from front. Therefore, in a state where the position of the hook 22 is not changed, the chain 9 is wound to flow from the first electric chain block 100A to the second electric chain block 100B.
- the chain replacement operation is facilitated; and thereby, it is possible to improve the operation efficiency.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Load-Engaging Elements For Cranes (AREA)
- Chain Conveyers (AREA)
Abstract
Description
- The present invention relates to a chain winding device.
- When the number of running sheaves and the number of loops of a chain are increased, whereas the lift speed becomes the reciprocal of the number of loops, an electric chain block can lift a weight multiplied by the number of loops in a suspension manner.
- Incidentally, as disclosed in
Patent Document 1, first and second electric chain blocks are used, and one chain is wound from both sides through a lower suspension tool including a hook and two or more running sheaves and an upper suspension tool including one or more running sheaves, and thus, a suspended load is lifted and lowered by the power of the two electric chain blocks. - Patent Document 1:
JP 2017-132561 A - As the chain which is used in the electric chain block is used, the abrasion, elongation, or the like in a bent portion of the chain occurs. For this reason, maintenance such as regular oil lubrication is performed, and when the chain reaches a usage limit, it is necessary to replace the chain with a new chain.
- Since a large-sized electric chain block disclosed in
Patent Document 1 includes a chain longer than usual and a plurality of sheaves for structural reason, the ease of replacement of the chain is very poor. - An object of the present invention is to easily perform a chain replacement operation on a chain winding device.
- According to one aspect of the present invention, there is provided a chain winding device that winds a chain with first drive means and second drive means through a lower suspension tool and an upper suspension tool, the device including a control unit that controls the first drive means and the second drive means, in which in a normal operation of moving a position of the lower suspension tool in an upward and downward direction, the control unit rotates the first drive means and the second drive means in different directions, and in a chain replacement operation of replacing the chain, the control unit rotates the first drive means and the second drive means in the same direction.
- According to one aspect of the present invention, it is possible to easily perform the chain replacement operation on the chain winding device.
-
-
Fig. 1 is an example of a perspective view illustrating the configuration of an electric chain block. -
Fig. 2 is an example of a front view illustrating the configuration of the electric chain block. -
Fig. 3 is a front view illustrating the configuration of a large-sized electric chain block. -
Fig. 4 is a view describing a normal operation mode of the large-sized electric chain block. -
Fig. 5 is a view describing a chain replacement operation mode of the large-sized electric chain block. - Hereinbelow, an example will be described with reference to the drawings.
- The entire configuration of an electric chain block will be described with reference to
Figs. 1 and2 . - Firstly, the entire configuration will be described.
- An
electric chain block 100 includes anelectric motor 1; aspeed reduction unit 2; anelectromagnetic brake 3; anupper suspension tool 4; apushbutton switch 5; achain bucket 6; asprocket 7; aload block 8; achain 9; and acontrol unit 10. Theupper suspension tool 4 for installing theelectric chain block 100 in a suspension manner is attached to theelectric chain block 100. - The
electric motor 1 is attached to theelectric chain block 100. Thespeed reduction unit 2 for reducing the rotation generated by theelectric motor 1 is connected toelectric motor 1, and the rotation reduced by thespeed reduction unit 2 is transmitted to thesprocket 7. Theelectromagnetic brake 3 for stopping the rotation generated by theelectric motor 1 is attached to theelectric motor 1. Thechain 9 meshes with thesprocket 7. Theload block 8 is attached to one end of thechain 9, and astopper 11 is attached to the other end thereof. Thechain bucket 6 is suspended on theelectric chain block 100, and thestopper 11 on a lowering side of thechain 9 is accommodated in thechain bucket 6. - The
control unit 10 which controls the operation of theelectric motor 1 and theelectromagnetic brake 3 is attached to theelectric chain block 100. - Subsequently, the operation of the
electric chain block 100 will be described. - When an operation button of the
pushbutton switch 5 is pushed in, thecontrol unit 10 recognizes an input of the operation, and theelectric motor 1 is energized and theelectromagnetic brake 3 is also energized at the same time, so that theelectromagnetic brake 3 is released and theelectric motor 1 starts rotating. - The rotational power of the
electric motor 1 is reduced to a predetermined rotating speed by thespeed reduction unit 2, the rotation is transmitted to thechain 9 by thesprocket 7 coupled to a final speed reduction stage, and theload block 8 is lifted and lowered via thechain 9. In this way, a suspended load is lifted and lowered. - When the
chain 9 opposite to theload block 8 is lifted, thechain 9 is accommodated in thechain bucket 6 attached to theelectric chain block 100, and when thechain 9 is lowered, thechain 9 is discharged. - Subsequently, the entire configuration of a large-sized electric chain block which is a chain winding device will be described with reference to
Fig. 3 . - A large-sized
electric chain block 200 uses the twoelectric chain blocks 100 illustrated inFig. 1 as drive means. Thechain 9 is wound with a first electric chain block (first drive means) 100A and a second electric chain block (second drive means) 100B from both sides through alower suspension tool 23 including ahook 22 and two or more runningsheaves 26 and anupper suspension tool 24 including one or more runningsheaves 26. Therefore, a suspended load with a weight corresponding to the number of loops of thechain 9 is lifted and lowered. - When the operation button of the
pushbutton switch 5 is pushed in, the firstelectric chain block 100A and the secondelectric chain block 100B operate to lift and lower thelower suspension tool 23 including thehook 22 and the two or more runningsheaves 26. In this way, a suspended load is lifted and lowered. - The operation of the chain winding device in a normal mode will be described with reference to
Fig. 4 . - As illustrated in
Fig. 4 , in the normal mode, the firstelectric chain block 100A and the secondelectric chain block 100B rotate in different directions as seen from front. For this reason, thelower suspension tool 23 including thehook 22 and the two or more runningsheaves 26 move in an upward direction or a downward direction (the position of thehook 22 is lowered or raised). In this way, it is possible to lift and lower a suspended load. - Subsequently, the operation of the chain winding device in a chain replacement operation mode will be described with reference to
Fig. 5 . - In regard to the chain replacement operation mode, when the
control unit 10 receives an input from outside, for example, a button input or a special operation which is a combination of a plurality of button inputs from thepushbutton switch 5, thecontrol unit 10 determines that the chain replacement operation mode is activated. - When the
control unit 10 determines that the chain replacement operation mode is activated, as illustrated on the left side ofFig. 5 , the firstelectric chain block 100A and the secondelectric chain block 100B rotate in the same direction as seen from front. - Then, after the
chain bucket 6 which is suspended on the firstelectric chain block 100A and the secondelectric chain block 100B is removed, and thestopper 11 which is attached to a final trailing end of thechain 9 on a firstelectric chain block 100A side is removed, a tip of anew chain 27 is coupled to the final trailing end of thechain 9 using aC link 12. - For example, when a downward button of the
pushbutton switch 5 is operated from this state, thechain 9 is wound to flow from the firstelectric chain block 100A to the secondelectric chain block 100B through thelower suspension tool 23 and theupper suspension tool 24. Thenew chain 27 is wound together with thechain 9 via theC link 12. - Then, as illustrated on the right side of
Fig. 5 , when theC link 12 is discharged from a secondelectric chain block 100B side, the button operation of thepushbutton switch 5 is stopped. Therefore, thechain 9 of the large-sizedelectric chain block 200 is replaced with thenew chain 27. - In the example, the foregoing operation facilitates the chain replacement operation of the large-sized
electric chain block 200. - In the related art, when the chain of the large-sized electric chain block is replaced, as illustrated on the right side of
Fig. 5 , firstly, thechain bucket 6 of the firstelectric chain block 100A and the secondelectric chain block 100B is removed. - Subsequently, after the
stopper 11 provided at the final trailing end of thechain 9 is removed, thechain 9 and thenew chain 27 are coupled to each other with theC link 12, and the firstelectric chain block 100A and the secondelectric chain block 100B are operated one by one by means such as electric power supply shutoff. In this case, the chain replacement operation is performed while slacks of thechain 9 and thenew chain 27, the slacks occurring in the runningsheaves 26, are eliminated with the human hands. - As described above, since the chain replacement operation of the large-sized
electric chain block 200 in the related art is performed while the slacks of thechain 9 and thenew chain 27 are eliminated with the human hands, the ease of replacement of the chain is very poor. - According to the example, when the
control unit 10 receives an input from outside, for example, a button input of thepushbutton switch 5, thecontrol unit 10 determines that the chain replacement operation mode is activated. When thecontrol unit 10 determines that the chain replacement operation mode is activated, the first electric chain block (first drive means) 100A and the second electric chain block (second drive means) 100B rotate in the same direction as seen from front. Therefore, in a state where the position of thehook 22 is not changed, thechain 9 is wound to flow from the firstelectric chain block 100A to the secondelectric chain block 100B. - As described above, according to the example, the chain replacement operation is facilitated; and thereby, it is possible to improve the operation efficiency.
-
- 100
- Electric chain block
- 200
- Large-sized electric chain block
- 1
- Electric motor
- 2
- Speed reduction unit
- 3
- Electromagnetic brake
- 4
- Upper suspension tool
- 5
- Pushbutton switch
- 6
- Chain bucket
- 7
- Sprocket
- 8
- Load block
- 9
- Chain
- 10
- Control unit
- 11
- Stopper
- 12
- C link
- 22
- Hook
- 23
- Lower suspension tool
- 24
- Upper suspension tool
- 26
- Running sheave
- 27
- New chain
Claims (6)
- A chain winding device that winds a chain (9) with first drive means and second drive means through a lower suspension tool (23) and an upper suspension tool (24), the device comprising:a control unit (10) that controls the first drive means and the second drive means,wherein in a normal operation of moving a position of the lower suspension tool (23) in an upward and downward direction, the control unit (10) rotates the first drive means and the second drive means in different directions, andin a chain replacement operation of replacing the chain (9), the control unit (10) rotates the first drive means and the second drive means in the same direction.
- The chain winding device according to claim 1,
wherein the lower suspension tool (23) includes two or more running sheaves (26),
the upper suspension tool (24) includes one or more running sheaves (26), and
the chain (9) moves via the running sheaves (26). - The chain winding device according to claim 1,
wherein in the chain replacement operation, the control unit (10) rotates the first drive means and the second drive means in the same direction without changing the position of the lower suspension tool (23). - The chain winding device according to claim 1,
wherein the control unit (10) determines whether the normal operation or the chain replacement operation is performed, and
when the control unit (10) determines that the chain replacement operation is performed, the control unit (10) rotates the first drive means and the second drive means in the same direction. - The chain winding device according to claim 4, further comprising:an input device for inputting predetermined information,wherein the control unit (10) determines that the chain replacement operation is performed, in response to the information input from the input device.
- The chain winding device according to claim 5,
wherein the input device is formed of a pushbutton switch (5), and
the control unit (10) determines that the chain replacement operation is performed, in response to button input information from the pushbutton switch (5).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2017220530A JP6845120B2 (en) | 2017-11-16 | 2017-11-16 | Chain take-up device |
PCT/JP2018/028628 WO2019097770A1 (en) | 2017-11-16 | 2018-07-31 | Chain winding device |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3712101A1 true EP3712101A1 (en) | 2020-09-23 |
EP3712101A4 EP3712101A4 (en) | 2021-08-18 |
Family
ID=66538964
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP18877740.3A Pending EP3712101A4 (en) | 2017-11-16 | 2018-07-31 | Chain winding device |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP3712101A4 (en) |
JP (1) | JP6845120B2 (en) |
CN (1) | CN111278762B (en) |
WO (1) | WO2019097770A1 (en) |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5310686Y2 (en) * | 1973-08-07 | 1978-03-22 | ||
JPS5851879B2 (en) * | 1980-02-26 | 1983-11-18 | 株式会社 キト− | Dual drive electric chain block with chain flow adjustment device |
JPS56148084U (en) * | 1980-04-03 | 1981-11-07 | ||
JPS58172195A (en) * | 1982-04-05 | 1983-10-08 | 株式会社日立製作所 | Multispeed hoist |
US4491301A (en) * | 1983-03-11 | 1985-01-01 | Etudes Constructions Appareils Levage | Tackles |
JPH0759473B2 (en) * | 1989-02-21 | 1995-06-28 | 象印チェンブロック株式会社 | Electric chain block |
JP2562071B2 (en) * | 1990-03-20 | 1996-12-11 | 川鉄マシナリー株式会社 | How to replace the crane wire rope |
JPH05238672A (en) * | 1992-02-26 | 1993-09-17 | Shikoku Tekko Kk | Balance type steel inverting machine |
JP2887457B2 (en) * | 1995-09-27 | 1999-04-26 | 株式会社キトー | Double drive electric chain block |
DE102005043061B3 (en) * | 2005-09-06 | 2007-05-03 | Terex-Demag Gmbh & Co. Kg | Combination double bottom block |
CN2903001Y (en) * | 2005-11-25 | 2007-05-23 | 江苏锡安达防爆股份有限公司 | Biwinding drum type super high explosion proof electric block hoist |
KR20150032406A (en) * | 2013-09-17 | 2015-03-26 | 대우조선해양 주식회사 | A winch system |
JP6533166B2 (en) | 2016-01-25 | 2019-06-19 | 株式会社キトー | Chain block |
CN106957017A (en) * | 2017-05-12 | 2017-07-18 | 山东电力建设第工程公司 | A kind of flat arm tower crane lifting of ultra-large type becomes multiplying power wiring system |
-
2017
- 2017-11-16 JP JP2017220530A patent/JP6845120B2/en active Active
-
2018
- 2018-07-31 EP EP18877740.3A patent/EP3712101A4/en active Pending
- 2018-07-31 WO PCT/JP2018/028628 patent/WO2019097770A1/en unknown
- 2018-07-31 CN CN201880066628.8A patent/CN111278762B/en active Active
Also Published As
Publication number | Publication date |
---|---|
JP2019089641A (en) | 2019-06-13 |
EP3712101A4 (en) | 2021-08-18 |
WO2019097770A1 (en) | 2019-05-23 |
CN111278762A (en) | 2020-06-12 |
CN111278762B (en) | 2021-07-27 |
JP6845120B2 (en) | 2021-03-17 |
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