CN114408735A - Rotatable multi-purpose formula waterwheel room jack-up overhauls platform - Google Patents
Rotatable multi-purpose formula waterwheel room jack-up overhauls platform Download PDFInfo
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- CN114408735A CN114408735A CN202210016656.7A CN202210016656A CN114408735A CN 114408735 A CN114408735 A CN 114408735A CN 202210016656 A CN202210016656 A CN 202210016656A CN 114408735 A CN114408735 A CN 114408735A
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- Prior art keywords
- platform
- guide rail
- waterwheel
- supporting
- annular guide
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- 238000001514 detection method Methods 0.000 claims abstract description 8
- 230000009193 crawling Effects 0.000 claims abstract description 4
- 241000282326 Felis catus Species 0.000 claims description 11
- 230000005540 biological transmission Effects 0.000 claims description 3
- 238000012423 maintenance Methods 0.000 abstract description 15
- 230000006378 damage Effects 0.000 abstract description 9
- 208000027418 Wounds and injury Diseases 0.000 abstract description 4
- 208000014674 injury Diseases 0.000 abstract description 4
- 238000003466 welding Methods 0.000 description 9
- 238000007689 inspection Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 240000009087 Crescentia cujete Species 0.000 description 1
- 235000005983 Crescentia cujete Nutrition 0.000 description 1
- 235000009797 Lagenaria vulgaris Nutrition 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000009194 climbing Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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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
- B66C6/00—Girders, or track-supporting structures, specially adapted for cranes
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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
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C9/00—Travelling gear incorporated in or fitted to trolleys or cranes
- B66C9/14—Trolley or crane travel drives
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Jib Cranes (AREA)
Abstract
The invention relates to a rotatable multipurpose waterwheel chamber hoisting and overhauling platform, which is particularly suitable for overhauling a waterwheel chamber of a hydraulic generator and belongs to the field of hydropower station auxiliary equipment. The maintenance platform at least comprises a supporting platform, a crawling ladder and guardrails, wherein the supporting platform at least comprises a platform support, an annular guide rail, a travelling device arranged on the annular guide rail and a hoisting main beam fixedly arranged on the travelling device, the travelling device is a support frame arranged at two ends of the annular guide rail, pulleys with locking devices are arranged at the bottom of the travelling device, the hoisting main beam is symmetrically arranged at two sides of a rotating shaft of a waterwheel room, grid plates are fixedly arranged above the hoisting main beam and a support supporting beam arranged on the hoisting main beam, guardrails used for protection are arranged around a main table board, and the crawling ladder leading to a bottom detection space is arranged on the side edge of the main table board. The maintenance platform can not only provide a safer and efficient operation environment for the waterwheel chamber maintenance operation, but also ensure the lifting and carrying of waterwheel indoor equipment, and avoid personal injury or equipment damage.
Description
Technical Field
The invention relates to a rotatable multipurpose waterwheel chamber hoisting and overhauling platform, which is particularly suitable for overhauling a waterwheel chamber of a hydraulic generator and belongs to the field of hydropower station auxiliary equipment.
Background
The waterwheel chamber of the hydroelectric generating set is an important maintenance window of the generator, the generator is supported on the waterwheel chamber, the water turbine is assigned, and the contained equipment is numerous and is an important place for the unit to perform maintenance work. Most hydropower stations are not designed with a waterwheel chamber maintenance platform in the initial stage, the main hoisting operation in the waterwheel chamber is realized by the annular track matched hoist crane and is limited by the range of motion, and only the disassembly and hoisting operation of partial parts can be assisted during maintenance. At present, when the unit is overhauled, a long ladder needs to be built in a waterwheel room to be connected with an oil discharge pipe so as to remove oil stored at the bottom of a thrust oil basin, and the safety risk of falling from high altitude exists when an maintainer climbs a ladder up and down. When the large shaft coupling bolt inspection and maintenance, the cleaning of the bottom of the thrust oil basin or the inspection of the stress sensor are carried out, a temporary scaffold needs to be set up, the disassembly and the assembly are inconvenient, and the automatic elements arranged on the periphery are easy to collide, so that the equipment is damaged. And because the waterwheel indoor equipment is numerous, the space is narrow and small, the arrangement is complex, when the equipment breaks down and needs to be overhauled, personal injury or equipment damage is easily caused by a manual carrying mode, and only the annular hoisting device arranged at present is difficult to meet various hoisting tasks.
Disclosure of Invention
In order to solve the existing problems, the invention provides a rotatable multipurpose waterwheel chamber hoisting and overhauling platform which can form a supporting platform with high structural strength and strong bearing capacity by a supporting plate fixed in the waterwheel chamber, thereby providing a safer and more efficient operation environment for the waterwheel chamber overhauling, operation and maintenance work and reducing the potential safety hazard of the operation in the limited space of the waterwheel chamber; the lifting and the carrying of the equipment in the waterwheel can be ensured, and personal injury or equipment damage is avoided.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows: a rotatable multi-purpose waterwheel chamber hoisting maintenance platform at least comprises a supporting platform, a ladder stand and guardrails, wherein the supporting platform at least comprises a platform support, an annular guide rail, a traveling device arranged on the annular guide rail and a hoisting main beam fixedly arranged on the traveling device, the platform support consists of n platform support plates and guide rail support legs arranged on the platform support plates, n is more than or equal to 3, the platform support plates are uniformly arranged on the same plane along the circumferential direction of the inner wall of a waterwheel chamber machine pit, mounting holes fixedly arranged with the guide rail support legs are formed in the platform support plates, and the guide rail support legs are uniformly arranged on the corresponding platform support plates to be positioned on the same horizontal plane;
the annular guide rail is erected on the guide rail support leg of the platform support, so that the annular guide rail is in a horizontal state relative to the ground, and the circle center of the annular guide rail is superposed with the axis of the rotating shaft of the waterwheel chamber;
the traveling device is a pair of support frames symmetrically arranged at two ends of the annular guide rail, the bottom of the traveling device is provided with a pulley embedded on the annular guide rail, and a locking device is arranged at the pulley;
the lifting main beams are a pair of parallel cross beams fixed at the top of the walking device and are symmetrically arranged at two sides of a rotating shaft of the waterwheel room, the lifting main beams are fixedly provided with supporting beams, grid plates are fixedly arranged above the lifting main beams and the supporting beams, the lifting main beams, the supporting beams and the grid plates jointly form a main table surface of the supporting platform, guardrails for protection are arranged around the main table surface, and crawling ladders leading to a bottom detection space are arranged on the side edges of the main table surface.
The annular guide rail adopts a segmented structure, so that the roundness deviation is ensured to be within 0.5mm and the horizontal deviation is within 0.5mm during splicing.
The running gear is operated by the transmission chain, so that the pulley can freely run along the guide rail.
The hoisting main beam is provided with a hoist crane which moves horizontally along the hoisting main beam, and the hoist crane is matched with the platform to rotate integrally, so that the hoisting work of main equipment in the waterwheel chamber is realized.
The top of cat ladder sets up the couple that prevents the cat ladder and heels, and the top of cat ladder hangs on supporting platform, and the below is stood in the detection space of waterwheel room bottom.
A secondary platform is erected on the main table board close to the position of the rotating shaft of the waterwheel chamber, and secondary guardrails for protection are arranged around the secondary platform.
According to the technical scheme, the rotatable multipurpose type waterwheel lifting maintenance platform is characterized in that a platform support is fixed through a support plate fixed inside the waterwheel, an annular guide rail is arranged on the platform support, a traveling device is installed on the annular guide rail, a lifting main beam is fixed above the annular guide rail and can rotate along the annular guide rail, and the lifting main beam, a support supporting beam fixedly installed on the lifting main beam and a grid plate jointly form a main table surface of the support platform. Because this maintenance platform is fixed in the inside of waterwheel room, need not set up the inconvenient interim scaffold frame of dismouting, avoid colliding with the inside automation component of arranging of waterwheel room, cause equipment to damage, and be equipped with the guardrail that is used for the protection around this device main mesa, the side of main mesa is equipped with the cat ladder that accesss to bottom detection space. Therefore, the device can provide a safer and more efficient operation environment for the overhaul, operation and maintenance work of the waterwheel room, and reduces the potential safety hazard of operation in the limited space of the waterwheel room; and because this device installs the hoist girder on running gear and can rotate along ring rail, through being equipped with on the hoist girder along hoist girder horizontal motion's calabash hangs, to the work of lifting by crane of the indoor main equipment of waterwheel, so this device can guarantee the jack-up of waterwheel indoor equipment, transport, has avoided bodily injury or equipment damage.
Drawings
FIG. 1 is a front view of a rotatable multi-purpose waterwheel lift service platform;
FIG. 2 is a top view of a rotatable multi-purpose waterwheel lift service platform;
fig. 3 is a three-dimensional view of a waterwheel room service platform.
In the figure: 1. a support platform; 11. a platform support; 12. an annular guide rail; 13. a traveling device; 14. hoisting a main beam; 15. a platform support plate; 16. a guide rail leg; 17. a pulley; 2. climbing a ladder; 3. a guardrail; 4. supporting the corbel; 5. a grid plate; 6. a secondary platform; 7. and (5) secondary guardrails.
Detailed Description
The present invention will be described in detail with reference to the following drawings and specific embodiments, but the scope of the present invention is not limited to the following embodiments.
The invention provides a rotatable multi-purpose type waterwheel chamber hoisting and overhauling platform, which comprises a supporting platform 1, a ladder 2 and a guardrail 3, wherein the supporting platform 1 at least comprises a platform support 11, an annular guide rail 12, a traveling device 13 arranged on the annular guide rail 12 and a hoisting main beam 14 fixedly arranged on the traveling device 13, the platform support 11 consists of n platform support plates 15 and guide rail support legs 16 arranged on the platform support plates 15, n is more than or equal to 3, the platform support plates 15 are uniformly and symmetrically arranged on the same plane along the circumferential direction of the inner wall of a waterwheel chamber machine pit, the platform support plates 15 are provided with mounting holes fixedly provided with the guide rail support legs 16, and the guide rail support legs 16 are uniformly arranged on the corresponding platform support plates 15 so that the guide rail support legs 16 are positioned on the same horizontal plane;
in this embodiment, the number n of the platform support plates 15 is 16, the waterwheel room is divided into 16 equal parts along the inner wall of the machine pit, the platform support plates 15 with the size of 200 × 154 × 24mm are welded to the positions 200mm away from the bottom surface, and the platform support plates 15 are provided with 6 holes M20 through holes. Four sides of the platform supporting plate 15 are welded with the inner wall of the machine pit by adopting gas shielded welding, the welding line is a fillet welding line, and the height of a welding leg is 20 mm. The main body of the 16 bracket-type guide rail support legs 16 is formed by welding two steel plates with the size of 200 × 20mm at an angle of 90 degrees, and two triangular support plates with the thickness of 16mm are arranged on two sides of the guide rail support legs 16. The landing leg and the platform supporting plate 15 are connected in a bolt joint mode, the upper planes of the 16 landing legs are strictly controlled to be in the same horizontal plane by a laser level meter during installation, and the horizontal deviation is not more than 0.5 mm.
The annular guide rail 12 is erected on the guide rail support leg 16 of the platform support 11, so that the annular guide rail 12 is in a horizontal state relative to the ground, the circle center of the annular guide rail 12 is overlapped with the axis of the rotating shaft of the waterwheel chamber, the annular guide rail 12 is of a segmented structure, in the embodiment, the annular guide rail 12 is of a segmented structure and is assembled and welded on site, and the cross section dimension of the annular guide rail 12 is 50 x 80 mm. The annular guide rail 12 is divided into 8 sections, grooves are formed in the sections before welding, spot welding preassembly is carried out firstly, after splicing is completed, the distance from each section of the annular guide rail 12 to the vertical face of the flange of the water generator connecting shaft is measured by an inner micrometer, the roundness deviation is controlled to be 0.5mm, and the horizontal deviation is controlled to be within the range of 0.5 mm.
The traveling device 13 is a pair of support frames symmetrically arranged at two ends of the annular guide rail 12, pulleys 17 embedded in the annular guide rail 12 are arranged at the bottom of the traveling device 13, a locking device is arranged at the pulleys 17, when the pulleys 17 are locked by the locking device, the traveling device 13 can be in a static state relative to the annular guide rail 12, and the traveling device 13 operates the pulleys 17 through a transmission chain to freely travel along the guide rail.
Two hoisting main beams 14 are fixed on the top of the traveling device 13 in parallel, the hoisting main beams 14 are respectively positioned on two sides of a rotating shaft of the waterwheel room, hoisting main beams 14 are provided with hoist cranes which horizontally move along the hoisting main beams 14, and the hoist cranes are matched with a platform to integrally rotate so as to realize the hoisting work of main equipment in the waterwheel room. The supporting beams 4 are fixedly arranged on the hoisting main beam 14, the grid plates 5 are fixedly arranged above the hoisting main beam 14 and the supporting beams 4, the hoisting main beam 14, the supporting beams 4 and the grid plates 5 jointly form a main table surface of the supporting platform 1, the periphery of the main table surface is provided with guardrails 3 for protection, and the side edge of the main table surface is provided with a ladder 2 leading to the bottom detection space. The top of cat ladder 2 sets up the couple that prevents cat ladder 2 and heels, and cat ladder 2's top hangs on supporting platform 1, and the below is stood on the detection space of waterwheel room bottom. A secondary platform 6 is further erected on the main table top and close to the rotating shaft of the waterwheel room, and secondary guardrails 7 for protection are arranged around the secondary platform 6.
In this embodiment, the hoisting main beam 14 is made of 25 a-shaped i-beam, two ends of the i-beam are processed in a special shape, and the i-beam is respectively placed on the two traveling devices 13 and is connected with each traveling device 13 by using 4M 20 x 55 bolts. The bearing capacity of each lifting main beam 14 is not lower than 3 t. The hoist crane hung on the hoisting main beam 14 can move horizontally along the hoisting main beam 14, and can meet the hoisting work of main equipment in a waterwheel chamber by matching with the integral rotation of the supporting platform 1, thereby providing convenience for daily operation and maintenance and equipment replacement and transformation.
In this embodiment, each support corbel 4 of the support platform 1 is connected to the main girder 14 by a bolt, the grid plate 5 is fixed to the main girder 14 and the support corbel 4 by fasteners, the guardrail 3 is fixed to the main deck by an insert, and all the support corbels 4, the grid plate 5 and the guardrail 3 are detachable structures. The maintenance platform is integrally checked after being installed, the supporting platform 1 is adjusted and checked along the annular walking of the annular guide rail 12, the hoist is hoisted to be debugged and each welding line and each connecting point are checked, the supporting platform 1 is smooth and not clamped when rotating and walking, the pulley 17 is flexible to operate, the hoist is hoisted to be stably hoisted, each welding point is welded firmly, and the bolt connection position is not loosened.
Claims (6)
1. The utility model provides a rotatable multi-purpose formula waterwheel room jack-up overhauls platform, includes supporting platform, cat ladder and guardrail at least, its characterized in that: the supporting platform at least comprises a platform support, an annular guide rail, a traveling device arranged on the annular guide rail and a lifting main beam fixedly arranged on the traveling device, wherein the platform support consists of n platform supporting plates and guide rail supporting legs arranged on the platform supporting plates, n is more than or equal to 3, the platform supporting plates are uniformly arranged on the same plane along the circumferential direction of the inner wall of the machine pit of the waterwheel, mounting holes fixedly provided with the guide rail supporting legs are formed in the platform supporting plates, and the guide rail supporting legs are uniformly arranged on the corresponding platform supporting plates so as to be positioned on the same horizontal plane;
the annular guide rail is erected on the guide rail support leg of the platform support, so that the annular guide rail is in a horizontal state relative to the ground, and the circle center of the annular guide rail is superposed with the axis of the rotating shaft of the waterwheel chamber;
the traveling device is a pair of support frames symmetrically arranged at two ends of the annular guide rail, the bottom of the traveling device is provided with a pulley embedded on the annular guide rail, and a locking device is arranged at the pulley;
the lifting main beams are a pair of parallel cross beams fixed at the top of the walking device and are symmetrically arranged at two sides of a rotating shaft of the waterwheel room, the lifting main beams are fixedly provided with supporting beams, grid plates are fixedly arranged above the lifting main beams and the supporting beams, the lifting main beams, the supporting beams and the grid plates jointly form a main table surface of the supporting platform, guardrails for protection are arranged around the main table surface, and crawling ladders leading to a bottom detection space are arranged on the side edges of the main table surface.
2. The rotatable multi-purpose waterwheel lift service platform of claim 1, wherein: the annular guide rail adopts a segmented structure, so that the roundness deviation is ensured to be within 0.5mm and the horizontal deviation is within 0.5mm during splicing.
3. The rotatable multi-purpose waterwheel lift service platform of claim 1, wherein: the running gear is operated by the transmission chain, so that the pulley can freely run along the guide rail.
4. The rotatable multi-purpose waterwheel lift service platform of claim 1, wherein: the hoisting main beam is provided with a hoist crane which moves horizontally along the hoisting main beam, and the hoist crane is matched with the platform to rotate integrally, so that the hoisting work of main equipment in the waterwheel chamber is realized.
5. The rotatable multi-purpose waterwheel lift service platform of claim 1, wherein: the top of cat ladder sets up the couple that prevents the cat ladder and heels, and the top of cat ladder hangs on supporting platform, and the below is stood in the detection space of waterwheel room bottom.
6. The rotatable multi-purpose waterwheel lift service platform of claim 1, wherein: a secondary platform is erected on the main table board close to the position of the rotating shaft of the waterwheel chamber, and secondary guardrails for protection are arranged around the secondary platform.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210016656.7A CN114408735A (en) | 2022-01-07 | 2022-01-07 | Rotatable multi-purpose formula waterwheel room jack-up overhauls platform |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210016656.7A CN114408735A (en) | 2022-01-07 | 2022-01-07 | Rotatable multi-purpose formula waterwheel room jack-up overhauls platform |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114408735A true CN114408735A (en) | 2022-04-29 |
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ID=81270789
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210016656.7A Pending CN114408735A (en) | 2022-01-07 | 2022-01-07 | Rotatable multi-purpose formula waterwheel room jack-up overhauls platform |
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| Country | Link |
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| CN (1) | CN114408735A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1999048793A2 (en) * | 1998-03-26 | 1999-09-30 | Atecs Mannesmann Aktiengesellschaft | Ring lift crane |
| CN104989090A (en) * | 2015-05-15 | 2015-10-21 | 国家电网公司 | Assembled aluminium alloy scaffold maintenance platform used for hydropower station unit |
| CN206203692U (en) * | 2016-11-28 | 2017-05-31 | 国家电网公司 | For the equipment boom hoisting in waterwheel room of pumped storage power station |
| CN108584712A (en) * | 2018-08-02 | 2018-09-28 | 中冶北方（大连）工程技术有限公司 | annular electric single-beam |
| WO2020048102A1 (en) * | 2018-09-05 | 2020-03-12 | 徐工集团工程机械股份有限公司 | Hoisting equipment |
| CN214570551U (en) * | 2021-03-22 | 2021-11-02 | 恩施清江大龙潭水电开发有限公司 | Power station generator stator overhauls platform |
-
2022
- 2022-01-07 CN CN202210016656.7A patent/CN114408735A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1999048793A2 (en) * | 1998-03-26 | 1999-09-30 | Atecs Mannesmann Aktiengesellschaft | Ring lift crane |
| CN104989090A (en) * | 2015-05-15 | 2015-10-21 | 国家电网公司 | Assembled aluminium alloy scaffold maintenance platform used for hydropower station unit |
| CN206203692U (en) * | 2016-11-28 | 2017-05-31 | 国家电网公司 | For the equipment boom hoisting in waterwheel room of pumped storage power station |
| CN108584712A (en) * | 2018-08-02 | 2018-09-28 | 中冶北方（大连）工程技术有限公司 | annular electric single-beam |
| WO2020048102A1 (en) * | 2018-09-05 | 2020-03-12 | 徐工集团工程机械股份有限公司 | Hoisting equipment |
| CN214570551U (en) * | 2021-03-22 | 2021-11-02 | 恩施清江大龙潭水电开发有限公司 | Power station generator stator overhauls platform |
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