CN102030271B - Lifting device with fixed pulley set dismantling and landing automatically and self-dismantling method - Google Patents
Lifting device with fixed pulley set dismantling and landing automatically and self-dismantling method Download PDFInfo
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- CN102030271B CN102030271B CN2010106181464A CN201010618146A CN102030271B CN 102030271 B CN102030271 B CN 102030271B CN 2010106181464 A CN2010106181464 A CN 2010106181464A CN 201010618146 A CN201010618146 A CN 201010618146A CN 102030271 B CN102030271 B CN 102030271B
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Abstract
The invention discloses a lifting device with a fixed pulley set dismantling and landing automatically and a self-dismantling method. The lifting device is used for hoisting a fixed pulley by setting an additional hoisting point and using an auxiliary hoisting device when the fixed pulley is dismantled. The lifting device has a simple structure and is convenient to use.
Description
Technical field
The present invention relates to a kind of hoisting device, be the exploitation of its additional function, be applicable to that the fixed pulley group that hoists is positioned at the large-tonnage trolley type twin beam overhead bridge crane of dolly welding box girder bottom; The invention still further relates to the method for dismounting of this hoisting device fixed pulley group simultaneously.
Background technology
In large-tonnage trolley type twin beam overhead bridge crane, mostly trolley frame is two butt beams and a girder or the many framed structures that crossbeam is formed, and the shop is with steel plate above.Mostly the dolly girder is welding box-shaped or i-shaped roof beam, and the bearing that assembles the fixed pulley group that hoists is directly welded in the lower surface of dolly girder lower flange.Because the present position is away from trolley platform, and relatively lean on down, the hoist maintenance and the maintenance abnormality of fixed pulley group of dolly is difficult, all the more so when replacing hoists fixed pulley especially.Crane in bridge type generally is the highest weight-lifting equipment in present position in the factory building, is setting up platform under the OTC's trolley or the lifting of whole dolly is overhauled down and the hoist measure of fixed pulley of maintaining car is very waste of manpower, material resources and financial resources.
Summary of the invention
Therefore; The present invention is in order to overcome the defective of fixed pulley group maintenance inconvenience in the present hoisting device; From being beneficial to the actual demand of producing and being convenient to assemble; So that conveniently maintenance and maintenance provide a kind of fixed pulley group simple in structure, easy to use to dismantle the hoisting device that lands certainly, and the method for dismounting of this hoisting device fixed pulley group is provided as purpose.
Fixed pulley group according to one aspect of the invention adopts following technical scheme from the hoisting device of dismounting landing:
This invention fixed pulley group is from the hoisting device of dismounting landing; Comprise dolly, lay winding wire ropes and be installed on the fixed pulley group that hoists on this dolly; And lay winding wire ropes and overhang the suspension hook group of the said fixed pulley group below of hoisting; The said fixed pulley group that hoists is installed on the said dolly through separable joint spare, and the center is provided with one group of first suspension centre symmetrically on two stay bearing plates of this fixed pulley group that hoists, vertically accordingly; On dolly, be provided with to coupling second suspension centre, vertically the pairing of cooresponding first suspension centre and second suspension centre is used;
This hoisting device also comprises can correspondingly be hung on first suspension centre that pairing uses and the auxiliary jack up unit between second suspension centre.
Above-mentioned hoisting device, the said fixed pulley group that hoists can be the connection structure that both connect together with being provided with of said suspension hook group coupling.
Above-mentioned hoisting device, said connection structure is for be arranged on the pin-and-hole on said hoist fixed pulley group and the suspension hook group respectively accordingly.
Above-mentioned hoisting device also is furnished with the intermediate plate that has pin-and-hole in the cooresponding upper and lower side of said pin-and-hole.
Above-mentioned hoisting device, the connection structure that is positioned on the said fixed pulley group that hoists also extends to form downwards by the stay bearing plate lower edge is middle.
Above-mentioned hoisting device, said second suspension centre is arranged on the bottom wing listrium of dolly girder.
Above-mentioned hoisting device, the number of said first hanger are 4.
Above-mentioned hoisting device, said auxiliary jack up unit is a chain block.
Above-mentioned hoisting device, said first suspension centre and second suspension centre are shackle structure.
Above-mentioned hoisting device, said separable joint spare is a bearing pin.
The method for dismounting of the fixed pulley group that hoists on a kind of weight-lifting equipment according to a further aspect of the present invention; Be equipped with suspension centre and be furnished with the auxiliary jack up unit that can be connected between corresponding suspension centre on hoist the fixed pulley group and the dolly of coupling; And hoisting is provided with connecting portion to coupling between fixed pulley and suspension hook group, and this method may further comprise the steps:
A promote the suspension hook group make its with the said fixed pulley group that hoists near until arriving the position of being scheduled to of captiveing joint;
The B captive joint suspension hook group and the fixed pulley group that hoists;
C will assist jack up unit to be connected between the suspension centre on cooresponding hoist fixed pulley group and the dolly;
D tightens up said auxiliary jack up unit, reduces the said suspension hook group that hoists to the pulling force of dolly, removes separable joint spare then, and hoist fixed pulley group and dolly are broken away from;
E loosens the steel rope of said auxiliary jack up unit and hoisting device, transfers hoist fixed pulley group and suspension hook group together and puts in place;
F is after predetermined fixed pulley group maintenance or changing; Tightening up said auxiliary jack up unit and the steel rope fixed pulley group that will hoist rises and is raised to rigging position; Completion hoists and removes said auxiliary jack up unit after the installation of fixed pulley group, and removes captiveing joint between hoist fixed pulley group and the suspension hook group.
Fixed pulley group according to technical scheme of the present invention reaches the mode that connects hoist fixed pulley group and dolly from method for dismounting employing separable joint spare from the hoisting device of dismounting landing, and is for convenience detach; Simultaneously; Preset suspension centre on hoist fixed pulley group and dolly, and correspondingly be provided with auxiliary jack up unit, transferring after the fixing and dismounting of state when the fixed pulley assembling and dismantling that are used to hoist are unloaded; After the fixed pulley group is transferred to ground or maintenance platform in case hoist; Just easily it has been realized replacing or maintenance operation, than existing hoisting device, manpower and materials have all been saved in the maintenance of its fixed pulley group that hoists and replacing greatly.
Description of drawings
Fig. 1 is a kind of structural front view of dismantling the hoisting device of landing according to a kind of fixed pulley group of technical scheme of the present invention certainly, only contains the connecting bridge of dolly and rises the fixed pulley group certainly, all the other omissions.
Fig. 2 is the left TV structure scheme drawing corresponding to Fig. 1.
Fig. 3 unloads state master TV structure scheme drawing according to the fixed pulley assembling and dismantling of the hoisting device of technical scheme of the present invention.
Fig. 4 is the left TV structure scheme drawing corresponding to Fig. 3.
Fig. 5 is the structural representation of intermediate plate.
Among the figure: 1, dolly girder, 2, the fixed pulley group that hoists, 3, intermediate plate, 4, the suspension hook group, 5, chain block, 6, steel rope; 101, second suspension centre, 102, connect bearing, 103, pin-and-hole, 104, the bearing bearing pin, 201, stay bearing plate, 202, first suspension centre, 203, fixed pin holes, 204, fixed pin holes, 205, fixed pin shaft, 301, fixed pin holes, 401, fixed pin holes.
The specific embodiment
With reference to the hoisting device of the fixed pulley group shown in the Figure of description 1-4 from the dismounting landing; Its basic scheme is that it comprises dolly, lay winding wire ropes and is installed on the fixed pulley group 2 that hoists on this dolly; And lay winding wire ropes and overhang the suspension hook group 4 of the said fixed pulley group below of hoisting; The said fixed pulley group that hoists is installed on the said dolly through separable joint spare, and the center is provided with one group of first suspension centre 202 symmetrically on two stay bearing plates 201 of this fixed pulley group that hoists, vertically accordingly; On dolly, be provided with to coupling second suspension centre 101, vertically the pairing of cooresponding first suspension centre and second suspension centre is used;
This hoisting device also comprises can correspondingly be hung on first suspension centre that pairing uses and the auxiliary jack up unit between second suspension centre.
Adopting vertical cooresponding suspension centre, mainly is the pulling force that can reduce to have assisted apparatus for converting like this.
Based on above-mentioned base case, those skilled in the art can select or group and following technological means:
The said fixed pulley group that hoists can be the connection structure that both connect together with being provided with of said suspension hook group coupling; What mainly consider is the influence that the suspension hook group is unloaded and landed the fixed pulley assembling and dismantling that hoist; Relate in particular to steel rope 6 and be one with steel rope; Exist each other related, for this reason, preferably when the dismounting of the fixed pulley group that hoists and landing and the suspension hook group be solidly installed.This captive joint is mainly considered the influence of steel rope and suspension hook group self gravitation, and is therefore less demanding, can fix just passable by in the vertical direction.
Preferably, said connection structure makes things convenient for fast Demolition for being arranged on the pin-and-hole on said hoist fixed pulley group and the suspension hook group respectively accordingly, improves and removes efficient.
Further, consider that possibly there is conflict in the suspension hook group on the fixed pulley group structure with hoisting, therefore, with reference to Figure of description 3 and 4, this programme also is furnished with the intermediate plate 3 that has pin-and-hole in the cooresponding upper and lower side of said pin-and-hole, eliminates and conflicts, convenient connection; Preferably, the connection structure that is positioned on the said fixed pulley group that hoists also extends to form downwards by the stay bearing plate lower edge is middle.Connection structure cooperates corresponding connection mode just can accomplish failure-free and connects.
Preferably, said second hanger is arranged on the bottom wing listrium of dolly girder 1, the hoist structure of fixed pulley group of compact conformation, especially coupling.
Be force balance, the number of said first suspension centre is 4, and the suspension centre number is too much unsuitable, otherwise producing balanced forces is difficult to control.
Preferably adopt jack up unit simple in structure about the service hoisting device, preferable selection is that said auxiliary jack up unit is chain block 5, and is very easy to use.
Preferably, said first suspension centre and second suspension centre are shackle structure, and be simple in structure, but at high speed connects.
About said separable joint spare, habitual separable joint spare all can use, and such as bolt, bearing pin etc., preferable selection is to use bearing pin, convenient and fast connection.
This specific embodiment also provides the method for dismounting of the fixed pulley group that hoists on a kind of weight-lifting equipment; Be equipped with suspension centre and be furnished with the auxiliary jack up unit that can be connected between corresponding suspension centre on hoist the fixed pulley group and the dolly of coupling; And hoisting is provided with connecting portion to coupling between fixed pulley and suspension hook group, and this method may further comprise the steps:
A promote the suspension hook group make its with the said fixed pulley group that hoists near until arriving the predetermined position of captiveing joint, predetermined connection location depends primarily on the structure of both connecting portions, is easy to solution based on this design; Certainly, maybe be difficult in the process of lifting with control, therefore; The later stage of adjusting to the position, the mode that can carry out limit gulde edge adjustment, to a certain extent; This mode has also determined preferably to use bearing pin to connect, and is convenient to quick location;
B then just can captive joint suspension hook group with hoisted the fixed pulley group;
C just can accomplish putting in place of auxiliary jack up unit with assisting jack up unit to be connected between the suspension centre on cooresponding hoist fixed pulley group and the dolly this moment;
D tightens up said auxiliary jack up unit, reduces the said suspension hook group that hoists to the pulling force of dolly, makes the fixed pulley group that hoists that the pulling force of dolly is reduced to zero as much as possible, and is for convenience detach; Remove separable joint spare then, make hoist fixed pulley group and dolly disengaging;
E loosens the steel rope 6 of said auxiliary jack up unit and hoisting device, transfers hoist fixed pulley group and suspension hook group together and puts in place, to carry out follow-up maintenance or to change;
F is after predetermined fixed pulley group maintenance or changing; Tightening up said auxiliary jack up unit and the steel rope fixed pulley group that will hoist rises and is raised to rigging position; Completion hoists and removes said auxiliary jack up unit after the installation of fixed pulley group, and removes captiveing joint between hoist fixed pulley group and the suspension hook group.
Claims (10)
1. a fixed pulley group is from the hoisting device of dismantling landing; Comprise dolly, lay winding wire ropes and be installed on the fixed pulley group (2) that hoists on this dolly; And lay winding wire ropes and overhang the suspension hook group (4) of the said fixed pulley group below of hoisting; It is characterized in that: the said fixed pulley group that hoists is installed on the said dolly through separable joint spare, and the center is provided with one group of first suspension centre (202) symmetrically on two stay bearing plates (201) of this fixed pulley group that hoists, vertically accordingly; On dolly, be provided with to coupling second suspension centre (101), vertically the pairing of cooresponding first suspension centre and second suspension centre is used;
This hoisting device also comprises can correspondingly be hung on first suspension centre that pairing uses and the auxiliary jack up unit between second suspension centre.
2. hoisting device according to claim 1 is characterized in that: the said fixed pulley group that hoists can be the connection structure that both connect together with being provided with of said suspension hook group coupling.
3. hoisting device according to claim 2 is characterized in that: said connection structure is for be arranged on the pin-and-hole on said hoist fixed pulley group and the suspension hook group respectively accordingly.
4. hoisting device according to claim 3 is characterized in that: also be furnished with the intermediate plate (3) that has pin-and-hole with the cooresponding upper and lower side of said pin-and-hole; The connection structure that is positioned on the said fixed pulley group that hoists also extends to form downwards by the stay bearing plate lower edge is middle.
5. hoisting device according to claim 1 is characterized in that: said second suspension centre is arranged on the bottom wing listrium of dolly girder (1).
6. according to claim 1 or 5 described hoisting device, it is characterized in that: the number of said first suspension centre is 4.
7. hoisting device according to claim 1 is characterized in that: said auxiliary jack up unit is chain block (5).
8. according to claim 1 or 7 described hoisting device, it is characterized in that: said first suspension centre and second suspension centre are shackle structure.
9. hoisting device according to claim 1 is characterized in that: said separable joint spare is a bearing pin.
10. the method for dismounting of the fixed pulley group that hoists on the hoisting device; It is characterized in that: be equipped with suspension centre and be furnished with the auxiliary jack up unit that can be connected between corresponding suspension centre on hoist the fixed pulley group and the dolly of coupling; And be provided with connecting portion to coupling between the fixed pulley group that hoists and suspension hook group, this method may further comprise the steps:
A promote the suspension hook group make its with the said fixed pulley group that hoists near until arriving the position of being scheduled to of captiveing joint;
The B captive joint suspension hook group and the fixed pulley group that hoists;
C will assist jack up unit to be connected between the suspension centre on cooresponding hoist fixed pulley group and the dolly;
D tightens up said auxiliary jack up unit, reduces the pulling force of said suspension hook group to dolly, removes separable joint spare then, makes hoist fixed pulley group and dolly disengaging;
E loosens the steel rope (6) of said auxiliary jack up unit and hoisting device, transfers hoist fixed pulley group and suspension hook group together and puts in place;
F is after predetermined fixed pulley group maintenance or changing; Tightening up said auxiliary jack up unit and the steel rope fixed pulley group that will hoist rises and is raised to rigging position; Completion hoists and removes said auxiliary jack up unit after the installation of fixed pulley group, and removes captiveing joint between hoist fixed pulley group and the suspension hook group.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010106181464A CN102030271B (en) | 2010-12-31 | 2010-12-31 | Lifting device with fixed pulley set dismantling and landing automatically and self-dismantling method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010106181464A CN102030271B (en) | 2010-12-31 | 2010-12-31 | Lifting device with fixed pulley set dismantling and landing automatically and self-dismantling method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102030271A CN102030271A (en) | 2011-04-27 |
| CN102030271B true CN102030271B (en) | 2012-08-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010106181464A Active CN102030271B (en) | 2010-12-31 | 2010-12-31 | Lifting device with fixed pulley set dismantling and landing automatically and self-dismantling method |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114835046A (en) * | 2022-05-25 | 2022-08-02 | 山东莱钢永锋钢铁有限公司 | Rapid die changing and detecting and maintaining method for fixed pulley block of bridge crane |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001002379A (en) * | 1999-06-28 | 2001-01-09 | Tadano Eng:Kk | Hoist |
| CN201458558U (en) * | 2009-07-27 | 2010-05-12 | 中国第二冶金建设有限责任公司 | Slide rail hoisting trolley |
| CN201553571U (en) * | 2009-12-05 | 2010-08-18 | 山东天齐置业集团股份有限公司 | Lifting motor replacing device for tower crane |
| CN101920908A (en) * | 2010-08-27 | 2010-12-22 | 山起重型机械股份公司 | Crane hoisting mechanism |
| CN201713219U (en) * | 2010-05-27 | 2011-01-19 | 卫华集团有限公司 | Crane and trolley and fixed pulley device thereof |
-
2010
- 2010-12-31 CN CN2010106181464A patent/CN102030271B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001002379A (en) * | 1999-06-28 | 2001-01-09 | Tadano Eng:Kk | Hoist |
| CN201458558U (en) * | 2009-07-27 | 2010-05-12 | 中国第二冶金建设有限责任公司 | Slide rail hoisting trolley |
| CN201553571U (en) * | 2009-12-05 | 2010-08-18 | 山东天齐置业集团股份有限公司 | Lifting motor replacing device for tower crane |
| CN201713219U (en) * | 2010-05-27 | 2011-01-19 | 卫华集团有限公司 | Crane and trolley and fixed pulley device thereof |
| CN101920908A (en) * | 2010-08-27 | 2010-12-22 | 山起重型机械股份公司 | Crane hoisting mechanism |
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| Publication number | Publication date |
|---|---|
| CN102030271A (en) | 2011-04-27 |
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