CN110759269A - Pulley block replacing method - Google Patents
Pulley block replacing method Download PDFInfo
- Publication number
- CN110759269A CN110759269A CN201911071501.8A CN201911071501A CN110759269A CN 110759269 A CN110759269 A CN 110759269A CN 201911071501 A CN201911071501 A CN 201911071501A CN 110759269 A CN110759269 A CN 110759269A
- Authority
- CN
- China
- Prior art keywords
- pulley
- guide
- guide sleeve
- shaft
- sleeve
- 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
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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
- B66D3/04—Pulley blocks or like devices in which force is applied to a rope, cable, or chain which passes over one or more pulleys, e.g. to obtain mechanical advantage
- B66D3/06—Pulley blocks or like devices in which force is applied to a rope, cable, or chain which passes over one or more pulleys, e.g. to obtain mechanical advantage with more than one pulley
- B66D3/08—Arrangements of sheaves
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P19/00—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D2700/00—Capstans, winches or hoists
- B66D2700/02—Hoists or accessories for hoists
- B66D2700/026—Pulleys, sheaves, pulley blocks or their mounting
- B66D2700/028—Pulley blocks with multiple sheaves
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
- Pulleys (AREA)
Abstract
The invention discloses a pulley block replacing method, which comprises the following steps: assembling each group of new pulleys on a pulley fixing support sleeve respectively, and integrally hoisting the assembled new pulleys; connecting the guide sleeves to two ends of the pulley shaft; cleaning the surface of the guide sleeve; the pulley shaft is hoisted at the mounting hole for assembly, and the guide sleeve and the pulley fixed support sleeve are connected; the sliding hammer is impacted, so that the new pulley is separated from the pulley fixing support sleeve and is sleeved on the pulley shaft; and taking down the guide sleeves at the two ends of the pulley shaft. Therefore, the pulleys are fixed relatively, the pulley block is ensured not to be dislocated in the hoisting alignment process, the alignment problem is avoided, the alignment time is greatly saved, and the installation efficiency is improved. Meanwhile, when the traveling hammer impacts, the pulley block, the bearing spacing ring and the pulley spacing ring can move to the pulley shaft along the pulley fixing support sleeve and the guide sleeve under the action of external force, so that the pulley shaft is prevented from colliding with the bearing spacing ring and the pulley spacing ring to cause damage to the pulley shaft, and the traveling hammer is safe and efficient.
Description
Technical Field
The invention relates to the technical field of hoisting, in particular to a pulley block replacement mode.
Background
Among the prior art, when changing the operation to crane running block, the pulley hoist and mount counterpoint in pairs in-process deflection, dislocation scheduling problem appear easily, lead to counterpoint unusual difficulty, and the bearing spacer ring between the pulley bearing and the pulley distance ring between the pulley drop easily under the dead weight condition moreover, and then hinder the process of penetrating of pulley shaft. In addition, the bearing spacer ring or the pulley spacer ring may be deformed by the impact of the pulley shaft, and if the bearing spacer ring or the pulley spacer ring is deformed, the bearing spacer ring or the pulley spacer ring needs to be disassembled again for replacement and then reassembled. Therefore, the replacement efficiency in the prior art is extremely low.
In summary, how to improve the replacement efficiency of the movable pulley block is a problem to be solved urgently by those skilled in the art.
Disclosure of Invention
In view of the above, an object of the present invention is to provide a method for replacing a pulley block, which can achieve quick replacement of the pulley block and prevent a pulley shaft from damaging a bearing spacer ring and a pulley spacer ring when the pulley shaft penetrates a pulley.
In order to achieve the above purpose, the invention provides the following technical scheme:
a pulley block replacing method comprises the following steps:
assembling each group of new pulleys on a pulley fixing support sleeve respectively, and integrally hoisting the assembled new pulleys;
connecting the guide sleeves to two ends of the pulley shaft;
cleaning the surface of the guide sleeve;
the pulley shaft is hoisted at the mounting hole for assembly, and the guide sleeve and the pulley fixed support sleeve are connected;
impacting by a traveling hammer to enable the new pulley to be separated from the pulley fixing support sleeve and to be sleeved on the pulley shaft;
and taking down the guide sleeves at two ends of the pulley shaft.
Preferably, the connection of the guide sleeve to the two ends of the pulley shaft comprises the threaded connection of the guide sleeve and the shaft end of the pulley shaft by a cap.
Preferably, the connecting the guide sleeve and the pulley fixing support sleeve includes:
the guide sleeve is connected with the pulley fixed support sleeve in an inserting mode.
Preferably, the cleaning of the surface of the guide sleeve includes that foreign matters are not adsorbed on the surface of the guide sleeve.
Preferably, the guide sleeve comprises a guide conical part and a circumferential part connected with the guide conical part, and an internal thread used for being in threaded fit with the shaft end nut of the pulley shaft is arranged on the inner side surface of the circumferential part;
the outer diameter of the circumferential portion is the same as that of the pulley shaft, and the outer diameter of one end, close to the circumferential portion, of the guide conical portion is larger than that of one end, far away from the circumferential portion, of the guide conical portion.
Preferably, the taper of the guide conical part is 1: 10.
Preferably, the pulley fixing and supporting sleeve comprises a connecting part sleeved in the pulley, and at least one side of the connecting part is of a hollow structure so as to be conveniently inserted into the guide sleeve.
Preferably, both ends of the connecting part are provided with guide corners so as to sleeve the pulley on the connecting part.
The invention provides a pulley block replacing method, which comprises the following steps:
assembling each group of new pulleys on a pulley fixing support sleeve respectively, and integrally hoisting the assembled new pulleys;
connecting the guide sleeves to two ends of the pulley shaft;
cleaning the surface of the guide sleeve;
the pulley shaft is hoisted at the mounting hole for assembly, and the guide sleeve and the pulley fixed support sleeve are connected;
the sliding hammer is impacted, so that the new pulley is separated from the pulley fixing support sleeve and is sleeved on the pulley shaft;
and taking down the guide sleeves at the two ends of the pulley shaft.
Because each group of pulley blocks of the new pulleys are arranged on the pulley fixed support sleeve, the positions of the new pulleys in the pulley blocks are relatively fixed, the pulley blocks are ensured not to be staggered in the hoisting alignment process, the alignment problem in independent hoisting in the prior art is avoided, the alignment time is greatly saved, and the installation efficiency is improved.
When carrying out the strike of trip hammer, bearing spacer ring between assembly pulley, pulley bearing and pulley distance ring between the pulley remove to the epaxial mounted position of pulley along pulley fixed stay cover, uide bushing under the external acting force, and bearing spacer ring and pulley distance ring can't hinder the process of penetrating of pulley shaft, have also avoided pulley shaft and bearing spacer ring, pulley distance ring to take place the collision and cause and damage it, and the replacement method is safe high-efficient more.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a schematic flow chart of an embodiment of a pulley block replacement method according to the present invention;
fig. 2 is a schematic structural diagram of the assembled guide sleeve and pulley shaft in the pulley block replacing method provided by the invention;
FIG. 3 is a schematic view of the bearing spacer ring and the pulley spacer ring during movement of the guide sleeve;
fig. 4 is a schematic cross-sectional view of an embodiment of a pulley fixing support sleeve provided by the present invention.
In fig. 1-4:
1 is a guide sleeve, 11 is a circumferential part, 12 is a guide conical part, 2 is a pulley fixing support sleeve, 3 is a bearing spacing ring, 4 is a pulley spacing ring, and 5 is a pulley shaft.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The core of the invention is to provide a pulley block replacing method, which can realize the quick replacement of the pulley block and avoid the damage to the bearing spacing ring and the pulley spacing ring when a pulley shaft penetrates into the pulley.
Referring to fig. 1 to 4, fig. 1 is a schematic flow chart illustrating a pulley block replacing method according to an embodiment of the present invention; fig. 2 is a schematic structural view of the guide sleeve and the pulley shaft after assembly according to the present invention; FIG. 3 is a schematic view of the bearing spacer ring and the pulley spacer ring during movement of the guide sleeve; fig. 4 is a schematic cross-sectional view of an embodiment of a pulley fixing support sleeve provided by the present invention.
Referring to fig. 1, the method for replacing a pulley block provided in this embodiment includes:
step S1, assembling each group of new pulleys on the pulley fixed support sleeve 2 respectively, and integrally hoisting the assembled new pulleys;
step S2, connecting the guide sleeve 1 to both ends of the pulley shaft 5;
step S3, cleaning the surface of the guide sleeve 1;
step S4, hoisting the pulley shaft 5 at the mounting hole for assembly, and connecting the guide sleeve 1 with the pulley fixed support sleeve 2;
step S5, performing impact of a traveling hammer to enable a new pulley to be separated from the pulley fixed support sleeve 2 and to be sleeved on the pulley shaft 5;
in step S6, the guide bush 1 at both ends of the pulley shaft 5 is removed.
It should be noted that in step S1, when the new pulley is assembled on the pulley fixing and supporting sleeve 2, in order to facilitate integral hoisting, the new pulley is uniformly distributed in the length direction of the pulley fixing and supporting sleeve 2, for example, when the number of the pulleys in a group of pulley blocks is two, the two pulleys may be respectively connected to two ends of the pulley fixing and supporting sleeve 2.
It should be noted that, in the steps S2 and S6, the guide sleeve 1 and the pulley shaft 5 are detachably connected, and the specific connection mode between the two may be a bolt connection, a snap fit, or any other connection mode meeting the requirement.
Preferably, considering that both ends of the pulley shaft 5 are provided with shaft end cap threads, referring to fig. 1, the guide sleeve 1 is bolted to both ends of the pulley shaft 5.
It should be noted that, in step S3, preferably, the cleaning of the surface of the guide sleeve 1 may include that the surface of the guide sleeve 1 should not be adsorbed with foreign matters, so that the foreign matters on the surface of the guide sleeve 1 do not interfere with the movement of the pulley, the bearing spacer ring 3 and the pulley spacer ring 4 on the surface of the guide sleeve 1.
In the description, the foreign matter refers to an object such as oil dirt that affects the movement of the pulley, the bearing spacer ring 3, and the pulley distance ring 4 on the guide sleeve 1.
It should be noted that in step S4, the connection guide sleeve 1 and the pulley fixed support sleeve 2 can make the pulley sleeved on the pulley fixed support sleeve 2 move toward the pulley shaft 5 by the external force.
The guide sleeve 1 and the pulley fixed support sleeve 2 are detachably connected and can be in bolt connection, clamping connection and the like, and preferably, the guide sleeve 1 and the pulley fixed support sleeve 2 can be arranged to be inserted and connected so as to reduce the number of connecting pieces and simplify a connecting structure.
It should be noted that in step S5, the traveling hammer strikes the pulley to provide the pulley with the power necessary for the pulley to move in the direction approaching the pulley shaft 5.
In this embodiment, because each group of pulley blocks of new pulleys are all installed on the pulley fixed support sleeve 2, the positions between the new pulleys in the pulley blocks are relatively fixed, so that the dislocation of the pulley blocks in the hoisting alignment process is avoided, the alignment problem in independent hoisting in the prior art is avoided, the alignment time is greatly saved, and the installation efficiency is improved.
When carrying out the strike of trip hammer, the assembly pulley, bearing spacer ring 3 between the pulley bearing and pulley distance ring 4 between the pulley are under the external acting force, along pulley fixed stay cover 2, the mounted position on pulley shaft 5 is removed to uide bushing 1, bearing spacer ring 3 and pulley distance ring 4 can't hinder the process of penetrating of pulley shaft 5, also avoided pulley shaft 5 and bearing spacer ring 3, pulley distance ring 4 to bump and cause and damage it, the replacement method is safe high-efficient more.
On the basis of the above-described embodiment, the structure of the guide sleeve 1 is defined, and the guide sleeve 1 may include a guide conical portion 12 and a circumferential portion 11 connected to the guide conical portion 12, and an inner side surface of the circumferential portion 11 is provided with an internal thread for the end of the pulley shaft 5 to be screw-fitted with a cap; the outer diameter of the circumferential portion 11 is the same as that of the pulley shaft 5, and the outer diameter of the end of the guide conical portion 12 near the circumferential portion 11 is larger than that of the end of the guide conical portion 12 away from the circumferential portion 11.
Referring to fig. 3, if the bearing spacer ring 3 and the pulley distance ring 4 fall due to their own weight during the assembly process, the bearing spacer ring 3 and the pulley distance ring 4 contact the upper surface of the guide cone 12, and the thrust force acting on the bearing spacer ring 3 and the pulley distance ring 4 in the axial direction of the pulley shaft 5 can be decomposed into a force upward along the surface of the guide cone 12 and a force perpendicular to the surface of the guide cone 12, so that the bearing spacer ring 3 and the pulley distance ring 4 move upward along the tapered surface of the guide sleeve 1, enter the circumferential portion 11 having the same diameter as the pulley shaft 5, and finally be pushed onto the pulley shaft 5.
Preferably, the taper of the guide conical part 12 can be set to 1:10, so that the guide conical part has a good guide effect and is convenient to manufacture.
Preferably, the guide sleeve 1 may be a full hollow structure in order to reduce the mass of the guide sleeve 1.
On the basis of the above embodiment, the structure of the bearing fixing and supporting sleeve 2 is limited, the bearing fixing and supporting sleeve 2 may include a connecting portion for being sleeved in the pulley, and at least one side of the connecting portion is a hollow structure so as to be used for being inserted into the guide sleeve 1.
Preferably, the connecting portion may be provided as a full hollow structure to reduce the mass of the bearing support sleeve 2.
Preferably, a chamfer may be provided at both ends of the connecting portion to facilitate the pulley being sleeved on the connecting portion.
In a specific embodiment, the outer diameter of the connecting part of the bearing fixing support sleeve 2 is 219.5mm, the thickness of the pipe wall is 16mm, the conduction angles at the two ends of the connecting part are 20mm × 30 °, and the lengths are 310mm and 610mm, so that the bearing fixing support sleeve is respectively suitable for pulley blocks with different numbers of pulleys.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The pulley block replacing method provided by the invention is described in detail above. The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.
Claims (8)
1. A pulley block replacing method is characterized by comprising the following steps:
assembling each group of new pulleys on a pulley fixed support sleeve (2) respectively, and integrally hoisting the assembled new pulleys;
connecting the guide sleeve (1) to two ends of the pulley shaft (5);
cleaning the surface of the guide sleeve (1);
the pulley shaft (5) is hoisted at the mounting hole for assembly, and the guide sleeve (1) is connected with the pulley fixed support sleeve (2);
the sliding hammer impacts to enable the new pulley to be separated from the pulley fixing support sleeve (2) and sleeved on the pulley shaft (5);
and taking down the guide sleeves (1) at the two ends of the pulley shaft (5).
2. The method for changing a pulley block according to claim 1, wherein said connecting the guide sleeve (1) to both ends of the pulley shaft (5) comprises a cap screw-coupling of the guide sleeve (1) to the end of the pulley shaft (5).
3. The pulley block replacement method according to claim 1, wherein connecting the guide sleeve (1) with the pulley fixed support sleeve (2) comprises:
the guide sleeve (1) is connected with the pulley fixed support sleeve (2) in an inserting mode.
4. The pulley block replacement method according to claim 1, wherein the cleaning of the surface of the guide sleeve (1) comprises that the surface of the guide sleeve (1) must not be adsorbed with foreign matter.
5. The pulley block changing method according to any one of claims 1 to 4, wherein the guide sleeve (1) comprises a guide cone portion (12) and a circumferential portion (11) connected to the guide cone portion (12), and an inner side surface of the circumferential portion (11) is provided with an internal thread for being screw-fitted to a shaft end cap of the pulley shaft (5);
the outer diameter of the circumferential portion (11) is the same as that of the pulley shaft (5), and the outer diameter of one end, close to the circumferential portion (11), of the guide conical portion (12) is larger than that of one end, far away from the circumferential portion (11), of the guide conical portion (12).
6. The pulley block changing method according to claim 5, characterized in that the taper of the guiding cone (12) is 1: 10.
7. The method for replacing a pulley block according to any one of claims 1 to 4, characterized in that the pulley fixed support sleeve (2) comprises a connecting part for being sleeved in a pulley, and at least one side of the connecting part is of a hollow structure so as to be used for being plugged with the guide sleeve (1).
8. The method of replacing a pulley block according to claim 7, wherein both ends of the connecting portion are provided with chamfered corners so as to fit the pulley on the connecting portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911071501.8A CN110759269A (en) | 2019-11-05 | 2019-11-05 | Pulley block replacing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911071501.8A CN110759269A (en) | 2019-11-05 | 2019-11-05 | Pulley block replacing method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110759269A true CN110759269A (en) | 2020-02-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911071501.8A Pending CN110759269A (en) | 2019-11-05 | 2019-11-05 | Pulley block replacing method |
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| CN (1) | CN110759269A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201046560Y (en) * | 2007-04-16 | 2008-04-16 | 宝山钢铁股份有限公司 | Mounting director for driving pulley spindle |
| CN202162777U (en) * | 2011-06-28 | 2012-03-14 | 攀钢集团有限公司 | Guide piece and pulley spindle mounting component |
| CN203863595U (en) * | 2014-04-21 | 2014-10-08 | 鞍钢股份有限公司 | Auxiliary threading tool for replacing pulley on lower portion of casting crane |
| CN204572746U (en) * | 2015-03-30 | 2015-08-19 | 南京梅山冶金发展有限公司 | A kind of sheave block axle |
| CN105252483A (en) * | 2015-11-24 | 2016-01-20 | 润邦卡哥特科工业有限公司 | Tooling replacement device for steel wire rope poppethead and operation method of tooling replacement device |
| CN106586871A (en) * | 2017-01-11 | 2017-04-26 | 唐山首钢京唐西山焦化有限责任公司 | Method for replacing movable pulley block of coke dry quenching elevator |
| CN110065871A (en) * | 2018-01-24 | 2019-07-30 | 株式会社日立制作所 | The replacing options of pulley gear and pulley main body |
-
2019
- 2019-11-05 CN CN201911071501.8A patent/CN110759269A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201046560Y (en) * | 2007-04-16 | 2008-04-16 | 宝山钢铁股份有限公司 | Mounting director for driving pulley spindle |
| CN202162777U (en) * | 2011-06-28 | 2012-03-14 | 攀钢集团有限公司 | Guide piece and pulley spindle mounting component |
| CN203863595U (en) * | 2014-04-21 | 2014-10-08 | 鞍钢股份有限公司 | Auxiliary threading tool for replacing pulley on lower portion of casting crane |
| CN204572746U (en) * | 2015-03-30 | 2015-08-19 | 南京梅山冶金发展有限公司 | A kind of sheave block axle |
| CN105252483A (en) * | 2015-11-24 | 2016-01-20 | 润邦卡哥特科工业有限公司 | Tooling replacement device for steel wire rope poppethead and operation method of tooling replacement device |
| CN106586871A (en) * | 2017-01-11 | 2017-04-26 | 唐山首钢京唐西山焦化有限责任公司 | Method for replacing movable pulley block of coke dry quenching elevator |
| CN110065871A (en) * | 2018-01-24 | 2019-07-30 | 株式会社日立制作所 | The replacing options of pulley gear and pulley main body |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200207 |
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