CN112723236A - Tool and method for replacing rotary support of bucket wheel machine - Google Patents
Tool and method for replacing rotary support of bucket wheel machine Download PDFInfo
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- CN112723236A CN112723236A CN202110109607.3A CN202110109607A CN112723236A CN 112723236 A CN112723236 A CN 112723236A CN 202110109607 A CN202110109607 A CN 202110109607A CN 112723236 A CN112723236 A CN 112723236A
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- jacking
- wheel machine
- bucket wheel
- seat frame
- support
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- 238000000034 method Methods 0.000 title claims abstract description 24
- 238000003466 welding Methods 0.000 claims description 4
- 229910000831 Steel Inorganic materials 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 230000007547 defect Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000013590 bulk material Substances 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F7/00—Lifting frames, e.g. for lifting vehicles; Platform lifts
- B66F7/10—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms supported directly by jacks
- B66F7/12—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms supported directly by jacks by mechanical jacks
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F7/00—Lifting frames, e.g. for lifting vehicles; Platform lifts
- B66F7/28—Constructional details, e.g. end stops, pivoting supporting members, sliding runners adjustable to load dimensions
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Warehouses Or Storage Devices (AREA)
Abstract
The invention relates to the technical field of bucket-wheel stacker-reclaimers in bulk cargo handling systems, in particular to a tool and a method for replacing a rotary support of a bucket wheel machine. The lifting device is fixed on the upper part of a door seat frame, and lifts the rotary platform; the bottom of the screw rod is provided with a support fixed on the upper part of the door seat frame, the screw rod penetrates through the rotary platform, and the screw rod is connected with an upper adjusting nut and a lower adjusting nut in a threaded mode by taking the rotary platform as a boundary. The invention does not need to dismantle the equipment so as to achieve the aim of replacing the slewing bearing, thereby saving the replacement time and cost and being safe and reliable.
Description
Technical Field
The invention relates to the technical field of bucket-wheel stacker-reclaimers in bulk cargo handling systems, in particular to a tool and a method for replacing a rotary support of a bucket wheel machine.
Background
The bucket-wheel stacker reclaimer is a large-scale loading and unloading device with high efficiency and continuous operation, and is suitable for bulk material storage yards in ports, large and medium-sized thermal power plants, metallurgical enterprises and other industries to stack and reclaim materials.
The slewing device is an important component of the bucket-wheel stacker reclaimer, mainly comprises a motor, a speed reducer, a coupler, a slewing bearing and the like, wherein the slewing bearing is the most important part for supporting the whole bucket-wheel machine and the bucket-wheel machine to be reinstalled and plays a crucial role, so the slewing bearing needs to be checked regularly and needs to be replaced once the slewing bearing is worn.
At present, the conventional method for replacing the rotary bearing of the bucket wheel machine is to replace all components (mainly comprising a bucket wheel device, a cantilever beam, a cantilever pull rod, a counterweight arm, a counterweight pull rod, a pitching steel structure, a counterweight and the like) on the upper part of a rotary steel structure after being completely removed, and the conventional replacement method has the defects of long replacement period, high cost and low safety factor.
Disclosure of Invention
In view of the defects of the prior art, the invention provides a tool and a method for replacing a rotary support of a bucket wheel machine, which do not need to dismantle equipment so as to achieve the purpose of replacing a rotary bearing, save the replacement time and cost, and are safe and reliable.
In order to achieve the purpose, the technical scheme provided by the invention is that the tool for replacing the rotary support of the bucket wheel machine is used, the rotary support is a rotary bearing and comprises a jacking device and a screw rod, the bottom of the jacking device is fixed on the upper part of a door seat frame, and the jacking device jacks a rotary platform; the bottom of the screw rod is provided with a support fixed on the upper part of the door seat frame, the screw rod penetrates through the rotary platform, and the screw rod is connected with an upper adjusting nut and a lower adjusting nut in a threaded mode by taking the rotary platform as a boundary.
Further, the tool for replacing the bucket wheel machine rotary support further comprises a guide device, the guide device comprises an upper guide part and a lower guide part in sliding connection with the upper guide part, the top end of the upper guide part is fixed to the bottom of the rotary platform, and the bottom of the lower guide part is fixed to the upper portion of the door seat frame.
Furthermore, the upper guide part is a guide sleeve, and the lower guide part is a guide column matched with the guide sleeve.
Preferably, the jacking device is a mechanical jack.
Furthermore, four jacking devices are arranged and are respectively fixed at four corners of the door seat frame.
Furthermore, four screw rods are arranged and are respectively fixed at four corners of the door seat frame, and the screw rods are arranged close to the jacking device.
On the other hand, the invention provides a method for replacing a rotating support of a bucket wheel machine, which comprises the following specific steps:
step 1: rotating the cantilever beam of the bucket wheel machine to a proper position, and supporting the cantilever beam of the rotating bucket wheel machine;
step 2: sequentially removing the fixing bolts of the outer ring of the slewing bearing and loosening the fixing bolts of the inner ring of the slewing bearing;
and step 3: placing a screw rod with a support at the upper part of a door seat frame, firmly welding, and detaching an inner ring fixing bolt;
and 4, step 4: four mechanical jacks are arranged at four corners of a door seat frame to jack and separate the rotary platform and the rotary bearing; the four mechanical jacks are jacking to be consistent in height in the jacking process, the mechanical jacks at the four corners are jacking in turn in sequence during jacking, the jacking height of each time is controlled within 2mm, and the jacking is stopped when the jacking is 200 mm; the lifting jack is used for adjusting two nuts in threaded connection with the lead screw on the support according to the lifting amount at any time;
step 6: and (4) pulling out the slewing bearing to form a slewing bearing slideway, and pulling out the slewing bearing in parallel.
Further, step 3 further comprises welding four guiding devices at four corners of the rotary platform and the door seat frame.
Further, rotating the cantilever beam of the bucket wheel machine to a proper position in the step 1 specifically means rotating the cantilever beam by 90 ° to be perpendicular to the track direction.
Furthermore, in the step 4, the four mechanical jacks sequentially jack 2mm in turn, specifically, the jack at one corner position of the door seat frame, the screw rod at the corner position is adjusted, the lower adjusting nut on the screw rod is adjusted to be tightly attached to the lower plane of the rotary platform without clearance, then the upper adjusting nut is adjusted, and then the jacks at other corner positions are sequentially and clockwise jacked.
The invention has the beneficial effects that: the device does not need to be dismantled to achieve the purpose of replacing the slewing bearing, so that the replacement time and cost are saved, and the device is safe and reliable.
Drawings
FIG. 1 is a schematic structural view of the inventive tool;
FIG. 2 is a schematic view of the positions of the tools on the upper plane of the door frame;
FIG. 3 is a schematic structural view of a bucket wheel machine;
FIG. 4 is a partial enlarged view of portion A of FIG. 3;
in the figure: 1. door seat frame, 2, rotary platform, 3, lead screw, 4, support, 5, upper portion adjusting nut, 6, lower portion adjusting nut, 7, guider, 7.1, upper portion guide, 7.2, lower portion guide, 8, mechanical jack, 9, cantilever beam, 10, cantilever pull rod, 11, counter weight pull rod, 12, slewing bearing, 13, slewing bearing roll-off direction, 14, slewing bearing slide.
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.
As shown in fig. 1, the tool for replacing the rotary support of the bucket wheel machine comprises a jacking device and a screw rod 3, wherein the bottom of the jacking device is fixed on the upper part of a door seat frame 1, and the jacking device jacks a rotary platform 2; the bottom of the screw rod 3 is provided with a support 4, the support 4 is fixed on the upper part of the door seat frame 1, the screw rod 3 penetrates through the rotary platform 2, and the screw rod 3 is connected with an upper adjusting nut 5 and a lower adjusting nut 6 in a threaded mode by taking the rotary platform 2 as a boundary.
The tool for changing the rotary support of the bucket wheel machine further comprises a guide device 7, wherein the guide device 7 comprises an upper guide part 7.1 and a lower guide part 7.2 in sliding connection with the upper guide part, the top end of the upper guide part 7.1 is fixed at the bottom of the rotary platform 2, and the bottom of the lower guide part 7.2 is fixed at the upper part of the door seat frame 1.
The upper guide 7.1 is a guide sleeve, and the lower guide 7.2 is a guide post matched with the guide sleeve.
The jacking device is a mechanical jack 8.
Four jacking devices are arranged and are respectively fixed at four corners of the door seat frame 1.
The four screw rods 3 are respectively fixed at four corners of the door seat frame 1, and the screw rods 3 are arranged close to the jacking device.
As shown in fig. 2, the method for replacing the rotating support of the bucket wheel machine comprises the following specific steps:
step 1: firstly, the bucket wheel machine is driven to a designated position, the cantilever beam 9 rotates 90 degrees to the direction perpendicular to the track direction to the right side of the cantilever beam 9, the cantilever beam 9 is placed on a rolling material pile in advance to be compacted, whether the cantilever pull rod 10 and the balance weight pull rod 11 are loosened or not is detected, the two pull rods are ensured not to be loosened, and then the support for the cantilever beam 9 of the rotary bucket wheel machine is completed.
Step 2: and (3) sequentially detaching the fixing bolts between the outer ring of the slewing bearing and the door seat frame 1 at the lower part, and loosening the inner ring of the slewing bearing and the fixing bolts of the slewing platform again (the detached bolts are used for cleaning dirt on the bolts in advance and spraying loosening agents). It should be noted that the outer ring fixing bolt is removed, and the inner ring fixing bolt is loosened and is not removed.
And step 3: the tool is placed on the door seat frame 1 and is firmly welded, and the inner ring fixing bolt is detached. Specifically, four guiding devices are welded at four corners of the rotary platform 2 and the door seat frame 1, and play a role in guiding and positioning in the subsequent jacking and falling processes. In addition, four lead screws 3 and a support 4 are fixed at four corners of the rotary platform 2 and the door seat frame 1, so that the anti-inclination protection effect is achieved.
And 4, step 4: four mechanical jacks 8 are adopted to jack and separate the rotary platform 2 and the rotary bearing 12 at four corners of the door seat frame 1. The specific process is that the mechanical jack is arranged between the door seat frame and the rotary platform, the rotary platform 2 is jacked, and the rotary bearing 12 is separated from the rotary platform 2.
And the four mechanical jacks 8 jack up the rotary platform 2 in four directions. And uniformly commanding in the jacking process to ensure that the jacking heights of the four mechanical jacks 8 are consistent. One mechanical jack 8 jacks clockwise or anticlockwise alternately during jacking, each jacking is 2mm, the height of different mechanical jacks 8 is controlled within 2mm, and the jacking stops when the jacks are 200 mm.
When the mechanical jacks 8 are lifted, two adjusting nuts (an upper adjusting nut 5 and a lower adjusting nut 6) on the screw rod 3 on the mounting support beside each mechanical jack 8 are adjusted at any time according to the lifting amount, and the protective effects of lacing and supporting are achieved.
It should be noted that jacking in turn can avoid having a jack to push out the current problem in the jacking simultaneously, produces and rocks for the jacking is steady safety more.
Specifically, as shown in fig. 2, the jack at the position a is lifted by 2mm, the lead screw at the position a is adjusted, the lower adjusting nut on the lead screw is adjusted to be tightly attached to the plane of the steel plate without a gap, and then the upper adjusting nut is adjusted. And then sequentially lifted B, C, D.
And 5: and (3) making a rotary bearing slideway 14 at the position where the rotary bearing needs to be pulled out, pulling out the rotary bearing in parallel, wherein the slideway is made of a seamless steel pipe with the diameter of 108mm, pulling out the rotary bearing outwards by using a chain block, and finally, lifting out the rotary bearing ring by using a crane.
It should be noted that, between step 3 and step 4, i.e., before the mechanical jacks 8 are jacked, a mark is made, and the lifting height is measured at any time during the jacking process, so that the lifting height of each mechanical jack 8 is consistent; the lifting condition is checked at any time during lifting to adjust the lifting height of the mechanical jack 8.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. Bucket wheel machine gyration is supported and is changed and use frock, its characterized in that: the lifting device is fixed on the upper part of a door seat frame, and lifts the rotary platform; the bottom of the screw rod is provided with a support fixed on the upper part of the door seat frame, the screw rod penetrates through the rotary platform, and the screw rod is connected with an upper adjusting nut and a lower adjusting nut in a threaded mode by taking the rotary platform as a boundary.
2. The tool for replacing the rotary support of the bucket wheel machine according to claim 1, wherein: the tool for replacing the bucket wheel machine rotary support further comprises a guide device, the guide device comprises an upper guide piece and a lower guide piece in sliding connection with the upper guide piece, the top end of the upper guide piece is fixed to the bottom of the rotary platform, and the bottom of the lower guide piece is fixed to the upper portion of the door seat frame.
3. The tool for replacing the rotary support of the bucket wheel machine according to claim 2, wherein: the upper guide part is a guide sleeve, and the lower guide part is a guide column matched with the guide sleeve.
4. The tool for replacing the rotary support of the bucket wheel machine according to any one of claims 1 to 3, wherein: the jacking device is a mechanical jack.
5. The tool for replacing the rotary support of the bucket wheel machine according to any one of claims 1 to 3, wherein: the four jacking devices are respectively fixed at four corners of the door seat frame.
6. The tool for replacing the rotary support of the bucket wheel machine according to any one of claims 1 to 3, wherein: the four screw rods are respectively fixed at four corners of the door seat frame and are arranged close to the jacking device.
7. The bucket wheel machine rotation support replacing method is characterized by comprising the following specific steps:
step 1: rotating the cantilever beam of the bucket wheel machine to a proper position, and supporting the cantilever beam of the rotating bucket wheel machine;
step 2: sequentially removing the fixing bolts of the outer ring of the slewing bearing and loosening the fixing bolts of the inner ring of the slewing bearing;
and step 3: placing a screw rod with a support at the upper part of a door seat frame, firmly welding, and detaching an inner ring fixing bolt;
and 4, step 4: four mechanical jacks are arranged at four corners of a door seat frame to jack and separate the rotary platform and the rotary bearing; the four mechanical jacks are jacking to be consistent in height in the jacking process, the mechanical jacks at the four corners are jacking in turn in sequence during jacking, the jacking height of each time is controlled within 2mm, and the jacking is stopped when the jacking is 200 mm; the lifting jack is used for adjusting two nuts in threaded connection with the lead screw on the support according to the lifting amount at any time;
step 6: and detaching and pulling out the slewing bearing.
8. The bucket wheel machine slewing support replacing method according to claim 7, wherein: and step 3, welding four guide devices at four corners of the rotary platform and the door seat frame.
9. The bucket wheel machine slewing support replacing method according to claim 7, wherein: and 4, sequentially jacking the mechanical jacks at the four corners in the step 4, namely jacking the jacks at one corner position of the door seat frame by 2mm in turn, adjusting the screw rod at the corner position, adjusting the lower adjusting nut on the screw rod to enable the screw rod to be tightly attached to the lower plane of the rotary platform without clearance, then adjusting the upper adjusting nut, and sequentially jacking the jacks at other corner positions clockwise.
10. The bucket wheel machine slewing support replacing method according to claim 7, wherein: and 6, specifically, pulling out the slewing bearing to form a slewing bearing slideway, and pulling out the slewing bearing in parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110109607.3A CN112723236A (en) | 2021-01-27 | 2021-01-27 | Tool and method for replacing rotary support of bucket wheel machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110109607.3A CN112723236A (en) | 2021-01-27 | 2021-01-27 | Tool and method for replacing rotary support of bucket wheel machine |
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| Publication Number | Publication Date |
|---|---|
| CN112723236A true CN112723236A (en) | 2021-04-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110109607.3A Pending CN112723236A (en) | 2021-01-27 | 2021-01-27 | Tool and method for replacing rotary support of bucket wheel machine |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204711957U (en) * | 2015-06-19 | 2015-10-21 | 洛阳京凯华信能源科技有限公司 | The large-scale extracting tool to wheel, impeller |
| CN105000503A (en) * | 2015-07-13 | 2015-10-28 | 北京首钢建设集团有限公司 | Construction method for sliding and replacing whole body of jacking and revolving bearing of revolved body of stacker-reclaimer |
| CN107097062A (en) * | 2017-06-05 | 2017-08-29 | 莱芜钢铁集团有限公司 | A kind of stacker-reclaimer revolution intersects the replacing options of bearing |
| CN209226490U (en) * | 2018-11-29 | 2019-08-09 | 上海同罡建筑工程有限公司 | A kind of continuous jack-up system of building |
| CN214570444U (en) * | 2021-01-27 | 2021-11-02 | 大连天重散装机械设备有限公司 | Tool for replacing rotating support of bucket wheel machine |
-
2021
- 2021-01-27 CN CN202110109607.3A patent/CN112723236A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204711957U (en) * | 2015-06-19 | 2015-10-21 | 洛阳京凯华信能源科技有限公司 | The large-scale extracting tool to wheel, impeller |
| CN105000503A (en) * | 2015-07-13 | 2015-10-28 | 北京首钢建设集团有限公司 | Construction method for sliding and replacing whole body of jacking and revolving bearing of revolved body of stacker-reclaimer |
| CN107097062A (en) * | 2017-06-05 | 2017-08-29 | 莱芜钢铁集团有限公司 | A kind of stacker-reclaimer revolution intersects the replacing options of bearing |
| CN209226490U (en) * | 2018-11-29 | 2019-08-09 | 上海同罡建筑工程有限公司 | A kind of continuous jack-up system of building |
| CN214570444U (en) * | 2021-01-27 | 2021-11-02 | 大连天重散装机械设备有限公司 | Tool for replacing rotating support of bucket wheel machine |
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