CN109573816B - Roller box overturning method for roller type straightener capable of preventing pendant - Google Patents
Roller box overturning method for roller type straightener capable of preventing pendant Download PDFInfo
- Publication number
- CN109573816B CN109573816B CN201710894255.0A CN201710894255A CN109573816B CN 109573816 B CN109573816 B CN 109573816B CN 201710894255 A CN201710894255 A CN 201710894255A CN 109573816 B CN109573816 B CN 109573816B
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- Prior art keywords
- roller box
- box
- roll
- roller
- overturning
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Classifications
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- 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
- B66C1/12—Slings comprising chains, wires, ropes, or bands; Nets
- B66C1/16—Slings with load-engaging platforms or frameworks
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C13/00—Other constructional features or details
- B66C13/04—Auxiliary devices for controlling movements of suspended loads, or preventing cable slack
- B66C13/08—Auxiliary devices for controlling movements of suspended loads, or preventing cable slack for depositing loads in desired attitudes or positions
Abstract
The invention discloses a roller box overturning method of a roller straightening machine for preventing a pendant from overturning, which is characterized in that a rotating shaft of a roller box overturning device is designed into a semi-constraint rotating mechanism which can move in the vertical direction, so that when the roller box overturns for 90 degrees and the gravity center changes, the hanging rope is ensured to be tensioned and stressed through the displacement of the overturning shaft in the vertical direction, the hanging rope is always kept to be in constraint force on the overturning roller box, and the pendant problem caused by the fact that the hanging rope loses the constraint force on the roller box in the position area is avoided. The invention eliminates the safety risk brought by the problem of the pendant in the roll box turning process, and simultaneously reduces the additional requirement on the lifting load capacity of a crane caused by the problem of the pendant in the roll box turning operation.
Description
Technical Field
The invention relates to an overturning process of a roller type straightening machine, in particular to a roller box overturning method of the roller type straightening machine, which prevents a pendant.
Background
The upper roll box of the roll straightening machine generally needs to be turned over for maintenance, the weight of the upper roll box of the roll straightening machine in a hot rolling mill is generally 10-30 tons according to the roll diameter, and a special turning device needs to be used for turning over for 180 degrees in the turning process. The existing roller box turning device mainly has the following two types:
one is to overturn by being driven by a motor or a manual wheel through being equipped with a reduction box, and the device is generally convenient to use, but has the defects of high cost and large occupied area. The device belongs to the class of devices as the 'roller box turnover device on multi-roller straightener' provided by patent application numbers ZL201410408366.2 and ZL201420468031.5, and all use the locking shaft turnover roller box of hand-operated speed reducer controlled by hand wheel through threaded connection, and the equipment structure is relatively complex.
The other type of simple turnover device is a simple turnover device which is not driven by turnover and needs to be turned over in a matched mode through a crane. The turning device suitable for the roller box belongs to the device, and comprises a turning device with a rotating device and a locking device, wherein the roller box turning device has the advantages that in the using process, a hanging phenomenon can occur when a crane turns the roller box, and certain potential safety hazards are caused. The schematic is as follows:
as shown in fig. 1, the roller box 1 is fixed on the turning device 2, and then the turning device 2 is connected to a crane hook through a lifting rope 3 to pull the roller box 1, so as to turn the roller box 1 180 degrees from the initial position (position a in the figure) to the final position (position D in the figure). However, in the process of turning over the roller box 1, as shown in fig. 2, when the roller box 1 is at the 90-degree vertical position (position C in the figure), the crane continues to pull the roller box 1 rightwards by the lifting rope 3 to turn over, when the 90-degree position is exceeded, the lifting rope 3 loses the binding force on the roller box 1 due to the change of the gravity center direction of the roller box 1, and the roller box 1 freely falls to the right side until the lifting rope 3 is tightened at the position D to restore the binding on the roller box 1. The handling ability of the many condition cranes of mill is close to the weight of roller box, can not design great margin, and there is certain potential safety hazard in this type of pendant.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide the roller box overturning method of the roller straightening machine for preventing the pendant, so that the safety risk caused by the pendant problem in the roller box overturning process is eliminated, and meanwhile, the additional requirement on the lifting load capacity of a crane caused by the pendant problem in the roller box overturning operation is reduced.
In order to achieve the purpose, the invention adopts the following technical scheme:
the roll box overturning method of the roll straightening machine comprises an overturning device, a lifting rope and a crane, wherein the overturning device comprises a roll box initial position fixing frame, a rotating mechanism, a roll box overturning position fixing frame and a base frame for fixing the roll box overturning position fixing frame, the rotating mechanism is further provided with a rotating shaft, and the rotating mechanism is also arranged on the base frame through the rotating shaft, and the roll box overturning method further comprises the following steps:
s1, forming a notch in a vertical direction on a base frame along a rotating shaft;
s2, sealing an opening at the upper end of the notch;
s3, placing the roller box on a roller box initial position fixing frame, wherein the lower end of the roller box is connected with a rotating shaft, the upper end of the roller box is connected with a lifting rope, and the lifting rope is connected with a crane;
s4, moving a crane to turn over the roller box, and when the roller box is turned over to a direction vertical to 90 degrees, lifting a lifting hook on the crane to drive a rotating shaft to rise to the upper end of the notch;
s5, the crane continues to move, and under the action of gravity, the rotating shaft connected to the lower end of the roller box moves downwards along the notch, so that the lifting rope is in a tensioned stress state;
s6, when the lifting rope, the roller box and the rotating shaft form a straight line state, the crane slowly moves back or transfers the lifting hook until the roller box is turned over for 180 degrees, and the roller box is placed on the fixed frame at the turning position of the roller box.
In step S2, a steel plate is used for sealing, and the steel plate is fixed to the base frame by bolts.
The width of the notch is matched with the rotating shaft.
In the technical scheme, the roller box overturning method for the roller straightening machine capable of preventing the pendant from overturning can avoid the phenomenon that the roller box pendant loses constraining force in the overturning process of the traditional roller box overturning device, the hoisting capacity of a crane is close to the weight of the roller box under many conditions in a factory, and a great margin cannot be designed, so that the pendant has certain potential safety hazard. The safety risk is effectively eliminated through the roller box turning device, the problem of hanging is solved through the roller box turning device, and the additional requirement on the lifting load capacity of a crane in the roller box turning operation is reduced.
Drawings
FIG. 1 is a schematic diagram of the prior art;
FIG. 2 is a schematic diagram of the appearance of a pendant;
FIG. 3 is a schematic structural view of the turning device of the present invention;
FIG. 4 is an enlarged schematic view of portion a of FIG. 3;
FIG. 5 is a schematic view of the roll cassette of the present invention flipped to a 90 degree orientation;
fig. 6 is a schematic view of the roll cassette rollover avoidance pendant of the present invention.
Detailed Description
The technical scheme of the invention is further explained by combining the drawings and the embodiment.
Referring to fig. 3 to 6, the roll box turning method of a roll leveler for preventing a pendant according to the present invention comprises a turning device, a lifting rope 4, and a crane 5, wherein the turning device mainly comprises a roll box initial position fixing frame 6 for placing a roll box 7, a rotating mechanism 8, a connecting structure for turning the roll box 7, a roll box turning position fixing frame 9 for placing the roll box 7 turned by 180 degrees, and a base frame 10 for fixing the roll box turning position fixing frame 9, the rotating mechanism 8 is further connected to a rotating shaft 11, and the rotating mechanism 8 is further connected to the base frame 10 through the rotating shaft 11, further comprising the steps of:
s1, firstly, forming a notch 12 in a vertical direction on a base frame 10 along a rotating shaft 11;
s2, sealing an opening at the upper end of the notch 12 by using a steel plate 13, and fixing the steel plate 13 for sealing on the base frame 10 by using a bolt 14, so that a rotary shaft 11 of the turnover device is improved from an original fixed type to a semi-constrained type mechanism which is movable in the vertical direction;
s3, fixedly placing the roller box 7 on a roller box initial position fixing frame 6, connecting the lower end of the roller box 7 with a rotating shaft 11, connecting the upper end of the roller box 7 with a lifting rope 4, and connecting the lifting rope 4 with a lifting hook on a crane 5;
s4, moving the crane 5 to the right to start a roll box 7 turning process, and when the roll box 7 is turned to a direction perpendicular to the base frame 10 by 90 degrees, lifting a lifting hook on the crane 5 to drive the roll box 7 to rise, so that the roll box 7 drives the rotating shaft 11 to rise to the upper end of the notch 12;
s5, the crane 5 continues to slowly move rightwards, and under the action of gravity, the rotating shaft 11 connected to the lower end of the roller box 7 vertically moves downwards along the notch 12 to ensure that the lifting rope 4 is in a tight stress state, so that the roller box 7 does not have a pendant phenomenon;
s6, when the lifting rope 4, the roller box 7 and the rotating shaft 11 form a straight line state, the crane 5 slowly moves leftwards and then or transfers the lifting hook until the roller box is turned over for 180 degrees, and the roller box is placed on the roller box turning position fixing frame 9.
Preferably, the width of the notch 12 is adapted to the diameter of the rotating shaft 11, and is not suitable for being too loose or too tight.
In conclusion, the rotating shaft of the roller box turnover device is designed into the semi-constraint rotating mechanism which can move in the vertical direction, so that when the roller box is turned over by 90 degrees and the gravity center changes, the hanging rope is ensured to be tensioned and stressed through the displacement in the vertical direction of the turnover shaft, the hanging rope is enabled to keep constraint force on the turnover roller box all the time, and the problem of hanging pendants caused by the fact that the hanging rope loses constraint force on the roller box in the position area is avoided.
It should be understood by those skilled in the art that the above embodiments are only for illustrating the present invention and are not to be used as a limitation of the present invention, and that changes and modifications to the above described embodiments are within the scope of the claims of the present invention as long as they are within the spirit and scope of the present invention.
Claims (3)
1. The roll box overturning method of the roll straightening machine for preventing the pendant comprises an overturning device, a lifting rope and a crane, wherein the overturning device comprises a roll box initial position fixing frame, a rotating mechanism, a roll box overturning position fixing frame and a base frame for fixing the roll box overturning position fixing frame, the rotating mechanism is further provided with a rotating shaft, and the rotating mechanism is also arranged on the base frame through the rotating shaft, and the overturning method is characterized by further comprising the following steps:
s1, forming a notch in a vertical direction on a base frame along a rotating shaft;
s2, sealing an opening at the upper end of the notch;
s3, placing the roller box on a roller box initial position fixing frame, wherein the lower end of the roller box is connected with a rotating shaft, the upper end of the roller box is connected with a lifting rope, and the lifting rope is connected with a crane;
s4, moving a crane to turn over the roller box, and when the roller box is turned over to a direction vertical to 90 degrees, lifting a lifting hook on the crane to drive a rotating shaft to rise to the upper end of the notch;
s5, the crane continues to move, and under the action of gravity, the rotating shaft connected to the lower end of the roller box moves downwards along the notch, so that the lifting rope is in a tensioned stress state;
s6, when the lifting rope, the roller box and the rotating shaft form a straight line state, the crane slowly moves back or transfers the lifting hook until the roller box is turned over for 180 degrees, and the roller box is placed on the fixed frame at the turning position of the roller box.
2. The method for preventing the roll box of the roll leveler from turning over of the pendant as recited in claim 1, wherein in the step S2, the seal is formed by a steel plate which is fixed to the base frame by bolts.
3. The method for preventing the roll box of the roll leveler from turning over of the pendant as recited in claim 1, wherein the width of said notch is adapted to the rotating shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710894255.0A CN109573816B (en) | 2017-09-28 | 2017-09-28 | Roller box overturning method for roller type straightener capable of preventing pendant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710894255.0A CN109573816B (en) | 2017-09-28 | 2017-09-28 | Roller box overturning method for roller type straightener capable of preventing pendant |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109573816A CN109573816A (en) | 2019-04-05 |
| CN109573816B true CN109573816B (en) | 2020-03-27 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710894255.0A Active CN109573816B (en) | 2017-09-28 | 2017-09-28 | Roller box overturning method for roller type straightener capable of preventing pendant |
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| Country | Link |
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| CN (1) | CN109573816B (en) |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3295227B2 (en) * | 1994-05-17 | 2002-06-24 | 株式会社コーハン | Work reversing device |
| CN202591917U (en) * | 2012-03-27 | 2012-12-12 | 上海梅山钢铁股份有限公司 | Roller changing car of withdrawal and straightening unit |
| CN104889199B (en) * | 2014-08-19 | 2017-04-19 | 襄阳振本传动设备有限公司 | Upper roller box overturning device of multi-roller straightener |
| CN204486511U (en) * | 2014-12-30 | 2015-07-22 | 隆英(金坛)特钢科技有限公司 | Be applicable to the turning device of roller box |
| CN105905783A (en) * | 2016-05-31 | 2016-08-31 | 成都市沃发特科技有限公司 | Anti-falling lifting appliance |
| CN206298327U (en) * | 2016-12-28 | 2017-07-04 | 马鞍山市天马冶金材料有限公司 | A kind of switching mechanism of demoulding ESR ingot |
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2017
- 2017-09-28 CN CN201710894255.0A patent/CN109573816B/en active Active
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| Publication number | Publication date |
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| CN109573816A (en) | 2019-04-05 |
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