CN108425348B - Hydraulic overhaul platform for flood discharge flow channel of hydropower station and operation method - Google Patents
Hydraulic overhaul platform for flood discharge flow channel of hydropower station and operation method Download PDFInfo
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- CN108425348B CN108425348B CN201810298454.XA CN201810298454A CN108425348B CN 108425348 B CN108425348 B CN 108425348B CN 201810298454 A CN201810298454 A CN 201810298454A CN 108425348 B CN108425348 B CN 108425348B
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B8/00—Details of barrages or weirs ; Energy dissipating devices carried by lock or dry-dock gates
- E02B8/06—Spillways; Devices for dissipation of energy, e.g. for reducing eddies also for lock or dry-dock gates
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G3/00—Scaffolds essentially supported by building constructions, e.g. adjustable in height
- E04G3/28—Mobile scaffolds; Scaffolds with mobile platforms
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G3/00—Scaffolds essentially supported by building constructions, e.g. adjustable in height
- E04G3/28—Mobile scaffolds; Scaffolds with mobile platforms
- E04G2003/283—Mobile scaffolds; Scaffolds with mobile platforms mobile horizontally
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G3/00—Scaffolds essentially supported by building constructions, e.g. adjustable in height
- E04G3/28—Mobile scaffolds; Scaffolds with mobile platforms
- E04G2003/286—Mobile scaffolds; Scaffolds with mobile platforms mobile vertically
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
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- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Ladders (AREA)
Abstract
The invention discloses a hydraulic overhaul platform of a flood discharge runner of a hydropower station and an operation method, wherein base platforms are connected through a width adjusting mechanism; a mounting lug plate is fixed at one end of the base platform, a first top ladder stand is hinged to the mounting lug plate through a pin shaft, and a second top ladder stand is fixedly connected to the tail end of the top of the first top ladder stand; a main lifting device and an auxiliary lifting device for driving the first top ladder to lift are arranged between the first top ladder and the base platform; a base ladder stand is fixedly arranged on the inner side wall of the base platform; and one end of the base platform, which is positioned at the installation lug plate, is provided with a power device for pulling the whole maintenance platform to move along the flood discharge flow channel. By adopting the overhaul platform, the hydropower station flood discharge runner can be overhauled in an auxiliary mode, and the engineering quantity of scaffold erection during overhauling of the hydropower station flood discharge runner is reduced.
Description
Technical Field
The invention relates to a hydraulic overhaul platform for a flood discharge flow passage of a hydropower station and an operation method, and belongs to the field of overhaul tools for flood discharge flow passages of hydropower stations.
Background
The flood discharge flow channel of the hydropower station is an important channel for flood discharge, is an important guarantee of safe operation of a dam, and needs to be overhauled after the flood discharge flow channel is used for a period of time, and the traditional overhauling process needs to manually set up an operation mode of a scaffold overhauling platform, so that the overhauling process has the following defects:
(1) Because the length of the drainage flow channel is longer, the length of the scaffold to be erected is longer, and the whole erection process needs to be erected manually, so that the workload is larger, and the labor intensity of operators is high;
(2) Because the flood discharge channels are provided with a certain gradient, certain difficulty is brought to the erection of the scaffold, the stability of the erected scaffold cannot be well ensured, and potential safety hazards are easy to occur;
(3) Because the scaffold is adopted, the steel frame pipe of the scaffold body is easy to damage the bottom plate of the flood discharge channel, so that secondary damage is caused;
(4) The width of the flood discharge runner can change along with the height of the runner, so that a scaffold needs to be newly erected, and the adaptability is poor.
Disclosure of Invention
The hydraulic overhaul platform for the hydropower station flood discharge runner and the operation method thereof can be used for carrying out auxiliary overhaul on the hydropower station flood discharge runner, so that the engineering quantity of scaffold erection during overhaul of the hydropower station flood discharge runner is reduced, a runner bottom plate is protected, manpower and material resources are saved, the hydraulic overhaul platform can adapt to the gradient and width change of the runner, and the degree of automation is high; and the safety of the operation is effectively ensured.
In order to achieve the technical characteristics, the aim of the invention is realized in the following way: the hydraulic overhaul platform for the flood discharge runner of the hydropower station comprises base platforms which are arranged in parallel, wherein the base platforms are connected through a width adjusting mechanism; a mounting lug plate is fixed at one end of the base platform, a first top ladder stand is hinged to the mounting lug plate through a pin shaft, and a second top ladder stand is fixedly connected to the tail end of the top of the first top ladder stand; a main lifting device and an auxiliary lifting device for driving the first top ladder to lift are arranged between the first top ladder and the base platform; a base ladder stand is fixedly arranged on the inner side wall of the base platform; and one end of the base platform, which is positioned at the installation lug plate, is provided with a power device for pulling the whole maintenance platform to move along the flood discharge flow channel.
The width adjusting mechanism comprises a bottom width adjusting oil cylinder, and the base of the bottom width adjusting oil cylinder and the tail end of a piston rod are respectively arranged on two base platforms.
The base cat ladder is characterized in that a bottom cat ladder width adjusting mechanism used for adjusting the distance between the base cat ladders is arranged between the base cat ladders, the bottom cat ladder width adjusting mechanism comprises bottom connecting rods symmetrically hinged to the side walls of the base cat ladders, the middle of each bottom connecting rod is hinged through a pin shaft, and a bottom tensioning oil cylinder is arranged between each bottom connecting rod and the side wall of the base cat ladder.
The main lifting device comprises a main lifting oil cylinder, a base of the main lifting oil cylinder is fixed at the top of a first top ladder stand, a piston rod of the main lifting oil cylinder is hinged with a curved plate at the top of an inclined support leg through a first pin shaft, the inclined support leg is hinged on the side wall of a second top ladder stand through a second pin shaft, an inclined support pulley is mounted at the tail end of the bottom of the inclined support leg, the inclined support pulley and a rail form sliding fit, the rail is fixed at the top of a base extension bar, and the base extension bar is fixedly connected with the tail end of a base platform through a flange.
The auxiliary lifting device comprises an auxiliary lifting oil cylinder, a cylinder body base of the auxiliary lifting oil cylinder is hinged to a base platform, and the top end of a piston rod of the auxiliary lifting oil cylinder is hinged to the bottom of the first top crawling ladder.
The power device comprises symmetrically arranged windlass, and the windlass is fixedly arranged on the base platform; the hoisting shaft of the winch is wound with a hoisting rope, and the other end of the hoisting rope is fixed on a gate or a metal structure at the entrance of the flood discharge flow passage and is lifted up on the whole maintenance platform.
The base platform is provided with a hydraulic pump station which is connected with the main lifting device, the auxiliary lifting device and the width adjusting mechanism at the same time to provide hydraulic power.
Install the top cat ladder width adjustment mechanism that is used for adjusting first top cat ladder interval between the first top cat ladder, top cat ladder width adjustment mechanism is including the top connecting rod of symmetry hinge on first top cat ladder lateral wall, the centre of top connecting rod is articulated through the round pin axle, is provided with top tensioning hydro-cylinder between the lateral wall of top connecting rod and first top cat ladder.
The bottom of base platform installs the base supporting wheel, installs the base leading wheel on the lateral wall of base platform, the upper cat ladder leading wheel is installed to the top lateral wall of second top cat ladder.
Guard rails are arranged on the outer sides of the first top ladder, the second top ladder and the base ladder; the three groups of ladder stand structures all comprise foot pedals, and the foot pedals are connected with the angle adjusting rods of the foot pedals and adjust the angles of the foot pedals.
The operation method of the hydraulic overhaul platform for the flood discharge runner of the hydropower station according to any one of the above claims comprises the following steps:
step1: two traction steel wire ropes are put down along a flood discharge flow passage bottom plate from metal structures such as a gate and the like at the inlet of the flood discharge flow passage;
step2: lifting the hydraulic overhaul platform of the flood discharge flow passage of the hydropower station to a water outlet bottom plate at the end part of the flood discharge flow passage;
step3: one end of the two traction steel wire ropes is fixed on metal structures such as a gate and the like at the inlet of the flood discharge runner, and the other end is fixed on a hoisting shaft of the hoisting machine;
step4: the main lifting oil cylinder is adjusted to be in a non-pressure free telescopic state through a hydraulic control valve, and auxiliary lifting oil cylinders on two sides are started to enable the upper first top ladder stand and the second top ladder stand to rotate to a certain height;
step5: the main lifting oil cylinders are connected into a pressurized working state through the hydraulic control valve, the auxiliary lifting oil cylinders are adjusted to be in a non-pressurized free telescopic state, the main lifting oil cylinders on two sides are started, the inclined supporting legs are driven through the main lifting oil cylinders, the second top ladder stand is further lifted until the top of the ladder stand is close to the top wall of the flood discharge channel, and then the inclined supporting pulleys of the inclined supporting legs are relatively fixed with the bolts for the rails;
step6: then, starting a bottom width adjusting oil cylinder, a bottom tensioning oil cylinder and a top tensioning oil cylinder of the width adjusting mechanism, so that a base guide wheel and an upper ladder stand guide wheel of the pressure maintenance platform compress two side walls of the flood discharge flow channel;
step7: the maintainer climbs on the base ladder, the first top ladder and the second top ladder to overhaul the bottom and the side wall of the flood discharge channel;
step8: the winch is controlled to enable the whole maintenance platform to be lifted from the bottom of the flood discharge runner to the inlet in sequence for maintenance.
The invention has the following beneficial effects:
1. through adopting foretell maintenance platform can be used for the maintenance operation of flood discharge runner, in the use, only need place its whole maintenance platform inside the flood discharge runner, then promote maintenance platform inside the flood discharge runner through power device, at the promotion in-process, can carry out the jacking to first top cat ladder and second top cat ladder through main elevating gear and auxiliary elevating gear, and then make the height of cat ladder reach the position at roof place.
2. The width adjusting mechanism can be used for adjusting the width between the base platforms, so that the base platforms are adapted to different widths.
3. The power device can provide lifting power for the overhaul platform, so that the overhaul platform can ascend along the flood discharge flow passage.
4. Through main elevating gear, in the course of the work, can drive oblique landing leg through main lift cylinder, drive whole first top cat ladder and second top cat ladder by oblique landing leg again and go up and down, and then reach different heights.
5. Can make things convenient for maintainer to walk through first top cat ladder, second top cat ladder and base cat ladder, and then overhaul the flood discharge runner.
Drawings
The invention is further described below with reference to the drawings and examples.
Fig. 1 is a three-dimensional view of the overall structure of the present invention.
Fig. 2 is a front view of the overall structure of the present invention.
Fig. 3 is a top view of the overall structure of the present invention.
Fig. 4 is an enlarged view of part of fig. 2 a in accordance with the present invention.
Fig. 5 is a diagram showing the construction of the use process of the present invention.
In the figure: the hydraulic lifting device comprises a second top ladder 1, a main lifting cylinder 2, a first top ladder 3, an auxiliary lifting cylinder 4, a base ladder 5, a base extension bar 6, an inclined support leg 7, a base guide wheel 8, a base support wheel 9, a bottom tensioning cylinder 10, a bottom connecting rod 11, a top tensioning cylinder 12, a top connecting rod 13, a bottom width adjusting cylinder 14, a winch 15, a hydraulic pump station 16, a base platform 17, an upper ladder guide wheel 18, a track 19, an inclined support pulley 20, a pedal angle adjusting rod 21, a pedal 22, a first pin roll 23, a second pin roll 24, a guardrail 25, a mounting lug 26, a pin roll 27, a flood discharge flow passage 28, a top wall 29 and a traction steel wire rope 30.
Detailed Description
Embodiments of the present invention will be further described with reference to the accompanying drawings.
Example 1:
as shown in fig. 1-5, the hydraulic overhaul platform for the flood discharge runner of the hydropower station comprises base platforms 17 which are arranged in parallel, wherein the base platforms 17 are connected through a width adjusting mechanism; a mounting lug plate 26 is fixed at one end of the base platform 17, a first top ladder 3 is hinged on the mounting lug plate 26 through a pin shaft 27, and a second top ladder 1 is fixedly connected to the tail end of the top of the first top ladder 3; a main lifting device and an auxiliary lifting device for driving the first top ladder 3 to lift are arranged between the first top ladder 3 and the base platform 17; the inner side wall of the base platform 17 is fixedly provided with a base ladder stand 5; and a power device for pulling the whole maintenance platform to move along the flood discharge flow passage is arranged at one end of the base platform 17, which is positioned at the mounting lug plate 26. By adopting the overhaul platform, the hydropower station flood discharge runner can be overhauled in an auxiliary mode, the engineering quantity of scaffold erection during overhauling of the hydropower station flood discharge runner is reduced, a runner bottom plate is protected, manpower and material resources are saved, the hydropower station flood discharge runner can adapt to the gradient and width change of the runner, and the degree of automation is high; and the safety of the operation is effectively ensured.
Further, the width adjusting mechanism comprises a bottom width adjusting oil cylinder 14, and the base of the bottom width adjusting oil cylinder 14 and the tail end of a piston rod are respectively arranged on two base platforms 17. The distance between the base platforms 17 can be adjusted through the bottom width adjusting cylinder 14, so that the flood discharge channels 28 with different widths can be adapted.
Further, install the bottom cat ladder width adjustment mechanism that is used for adjusting the interval of base cat ladder 5 between the base cat ladder 5, bottom cat ladder width adjustment mechanism includes the bottom connecting rod 11 of symmetry hinge on the lateral wall of base cat ladder 5, the centre of bottom connecting rod 11 is articulated through the round pin axle, is provided with bottom tensioning hydro-cylinder 10 between the lateral wall of bottom connecting rod 11 and base cat ladder 5. The bottom connecting rod 11 can be tensioned or folded through the bottom tensioning cylinder 10, so that the width of the base ladder 5 is adjusted.
Further, the main lifting device comprises a main lifting oil cylinder 2, a base of the main lifting oil cylinder 2 is fixed at the top of the first top ladder stand 3, a piston rod of the main lifting oil cylinder 2 is hinged with a curved plate at the top of the inclined support leg 7 through a first pin shaft 23, the inclined support leg 7 is hinged on the side wall of the second top ladder stand 1 through a second pin shaft 24, an inclined support pulley 20 is mounted at the bottom end of the inclined support leg 7, the inclined support pulley 20 and a track 19 form sliding fit, the track 19 is fixed at the top of the base extension rod 6, and the base extension rod 6 is fixedly connected with the end of the base platform 17 through a flange. In the working process, the main lifting oil cylinder 2 drives the inclined supporting leg 7 to rotate around the second pin shaft 24, so that the inclined supporting pulley 20 at the bottom of the inclined supporting leg 7 and the track 19 form sliding fit, and finally the second top ladder 1 is lifted. The main lifting device saves installation space by adopting the lever structure, and can ensure that the second top ladder stand 1 can be completely laid flat.
Further, the auxiliary lifting device comprises an auxiliary lifting oil cylinder 4, a cylinder body base of the auxiliary lifting oil cylinder 4 is hinged to a base platform 17, and the top end of a piston rod of the auxiliary lifting oil cylinder is hinged to the bottom of the first top crawling ladder 3. The auxiliary lifting device can assist lifting.
Further, the power device comprises symmetrically arranged windlass 15, and the windlass 15 is fixedly arranged on a base platform 17; a winding rope is wound on a winding shaft of the winding engine 15, and the other end of the winding rope is fixed on a gate or a metal structure at the entrance of the flood discharge flow passage and is lifted up on the whole maintenance platform. In the working process, the winch 15 can drive the winch rope to wind, so that the whole maintenance platform is driven to lift.
Further, the base platform 17 is provided with a hydraulic pump station 16, and the hydraulic pump station 16 is connected with the main lifting device, the auxiliary lifting device and the width adjusting mechanism at the same time to provide hydraulic power. By adopting hydraulic power, the structure is convenient to realize, and the power source is easy to obtain.
Further, install the top cat ladder width adjustment mechanism that is used for adjusting first top cat ladder 3 interval between the first top cat ladder 3, top cat ladder width adjustment mechanism includes the top connecting rod 13 of symmetry hinge on first top cat ladder 3 lateral wall, the centre of top connecting rod 13 is articulated through the round pin axle, is provided with top tensioning hydro-cylinder 12 between the lateral wall of top connecting rod 13 and first top cat ladder 3. The top connecting rod 13 can be tensioned or folded through the top tensioning cylinder 12, so that the distance between the first top ladders 3 can be adjusted.
Further, a base supporting wheel 9 is installed at the bottom of the base platform 17, a base guiding wheel 8 is installed on the outer side wall of the base platform 17, and an upper ladder guiding wheel 18 is installed on the top side wall of the second top ladder 1. The base support wheels 9 can form sliding fit, so that the maintenance platform can move along the flood discharge flow passage 28.
Furthermore, guardrails 25 are arranged on the outer sides of the first top ladder 3, the second top ladder 1 and the base ladder 5; the three sets of ladder stand structures all include a foot pedal 22, the foot pedal 22 being connected to a foot pedal angle adjusting lever 21, and adjusting the angle of the foot pedal 22. The angle of the pedal 22 can be conveniently adjusted by the pedal angle adjusting lever 21.
Example 2:
the operation method of the hydraulic overhaul platform for the flood discharge runner of the hydropower station according to any one of the above claims comprises the following steps:
step1: two traction steel wire ropes 30 are put down along the bottom plate of the flood discharge channel from a metal structure such as a gate at the inlet of the flood discharge channel 28;
step2: lifting the hydraulic overhaul platform of the flood discharge flow passage of the hydropower station to a water outlet bottom plate at the end part of the flood discharge flow passage 28;
step3: one end of the two traction steel wire ropes 30 is fixed on a metal structure such as a gate at the inlet of the flood discharge runner, and the other end is fixed on a hoisting shaft of the hoisting machine 15;
step4: the main lifting oil cylinder 2 is regulated to be in a non-pressure free telescopic state through a hydraulic control valve, and the auxiliary lifting oil cylinders 4 on two sides are started to enable the upper first top ladder stand 3 and the second top ladder stand 1 to rotate to a certain height;
step5: the main lifting oil cylinder 2 is connected into a pressurized working state through a hydraulic control valve, the auxiliary lifting oil cylinder 4 is adjusted to be in a non-pressurized free telescopic state, the main lifting oil cylinders 2 on two sides are started, the inclined supporting legs 7 are driven through the main lifting oil cylinder 2, the second top crawling ladder 1 is further lifted until the top of the crawling ladder approaches to the top wall 29 of the flood discharge flow channel 28, and then the inclined supporting pulleys 20 of the inclined supporting legs 7 and the tracks 19 are relatively fixed through bolts;
step6: then, starting a bottom width adjusting oil cylinder 14, a bottom tensioning oil cylinder 10 and a top tensioning oil cylinder 12 of the width adjusting mechanism to enable a base guide wheel 8 and an upper ladder guide wheel 18 of the pressure maintenance platform to press two side walls of the flood discharge channel 28;
step7: the overhauling staff ascends the base crawling ladder 5, the first top crawling ladder 3 and the second top crawling ladder 1 to overhauls the bottom and the side wall of the flood discharge channel 28;
step8: the hoist 15 is controlled to lift the entire maintenance platform from the bottom of the flood discharge channel 28 to the entrance in sequence.
The above-described embodiments are intended to illustrate the present invention, not to limit it, and any modifications and variations made thereto are within the spirit of the invention and the scope of the appended claims.
Claims (8)
1. Hydropower station flood discharge runner hydraulic pressure overhauls platform, its characterized in that: the device comprises base platforms (17) which are arranged in parallel, wherein the base platforms (17) are connected through a width adjusting mechanism; a mounting lug plate (26) is fixed at one end of the base platform (17), a first top ladder stand (3) is hinged on the mounting lug plate (26) through a pin shaft (27), and a second top ladder stand (1) is fixedly connected to the tail end of the top of the first top ladder stand (3); a main lifting device and an auxiliary lifting device for driving the first top crawling ladder (3) to lift are arranged between the first top crawling ladder (3) and the base platform (17); a base ladder stand (5) is fixedly arranged on the inner side wall of the base platform (17); one end of the base platform (17) positioned on the mounting lug plate (26) is provided with a power device for pulling the whole maintenance platform to move along the flood discharge flow channel;
the width adjusting mechanism comprises a bottom width adjusting oil cylinder (14), and the base of the bottom width adjusting oil cylinder (14) and the tail end of a piston rod are respectively arranged on two base platforms (17);
install the bottom cat ladder width adjustment mechanism who is used for adjusting base cat ladder (5) interval between base cat ladder (5), bottom cat ladder width adjustment mechanism is including the bottom connecting rod (11) of symmetry hinge on base cat ladder (5) lateral wall, the centre of bottom connecting rod (11) is articulated through the round pin axle, is provided with bottom tensioning hydro-cylinder (10) between the lateral wall of bottom connecting rod (11) and base cat ladder (5).
2. The hydraulic service platform of a hydropower station flood discharge runner according to claim 1, wherein: the main lifting device comprises a main lifting oil cylinder (2), a base of the main lifting oil cylinder (2) is fixed at the top of a first top ladder stand (3), a piston rod of the main lifting oil cylinder (2) is hinged with a curved plate at the top of an inclined support leg (7) through a first pin shaft (23), the inclined support leg (7) is hinged on the side wall of a second top ladder stand (1) through a second pin shaft (24), an inclined support pulley (20) is mounted at the tail end of the bottom of the inclined support leg (7), the inclined support pulley (20) and a track (19) form sliding fit, the track (19) is fixed at the top of a base extension rod (6), and the base extension rod (6) is fixedly connected with the tail end of a base platform (17) through a flange.
3. The hydraulic service platform of a hydropower station flood discharge runner according to claim 2, wherein: the auxiliary lifting device comprises an auxiliary lifting oil cylinder (4), a cylinder body base of the auxiliary lifting oil cylinder (4) is hinged to a base platform (17), and the top end of a piston rod of the auxiliary lifting device is hinged to the bottom of the first top crawling ladder (3).
4. A hydropower station flood discharge runner hydraulic service platform according to claim 3, wherein: the power device comprises symmetrically arranged windlass (15), and the windlass (15) is fixedly arranged on a base platform (17); a winch rope is wound on a winch shaft of the winch (15), and the other end of the winch rope is fixed on a gate or a metal structure at the inlet of the flood discharge runner and is lifted up on the whole overhaul platform;
the base platform (17) is provided with a hydraulic pump station (16), and the hydraulic pump station (16) is connected with the main lifting device, the auxiliary lifting device and the width adjusting mechanism at the same time to provide hydraulic power.
5. The hydraulic service platform for a flood discharge runner of a hydropower station according to claim 4, wherein: install the top cat ladder width adjustment mechanism that is used for adjusting first top cat ladder (3) interval between first top cat ladder (3), top cat ladder width adjustment mechanism includes top connecting rod (13) of symmetry hinge on first top cat ladder (3) lateral wall, the centre of top connecting rod (13) is articulated through the round pin axle, is provided with top tensioning hydro-cylinder (12) between the lateral wall of top connecting rod (13) and first top cat ladder (3).
6. The hydraulic service platform for a flood discharge runner of a hydropower station according to claim 5, wherein: the bottom of base platform (17) is installed base supporting wheel (9), installs base leading wheel (8) on the lateral wall of base platform (17), go up cat ladder leading wheel (18) are installed to the top lateral wall of second top cat ladder (1).
7. The hydraulic service platform of a hydropower station flood discharge runner of claim 6, wherein: guard rails (25) are arranged on the outer sides of the first top crawling ladder (3), the second top crawling ladder (1) and the base crawling ladder (5); the three groups of ladder stand structures all comprise foot pedals (22), wherein the foot pedals (22) are connected with a foot pedal angle adjusting rod (21) and adjust the angle of the foot pedals (22).
8. A method of operating a hydraulic service platform for a flood discharge channel of a hydroelectric power station according to claim 7, comprising the steps of:
step1: two traction steel wire ropes (30) are put down along the bottom plate of the flood discharge flow passage from the gate metal structure at the inlet of the flood discharge flow passage (28);
step2: lifting the hydraulic overhaul platform of the flood discharge flow passage of the hydropower station to a bottom plate of a water outlet at the end part of the flood discharge flow passage (28);
step3: one end of the two traction steel wire ropes (30) is fixed on a gate metal structure at the inlet of the flood discharge runner, and the other end is fixed on a hoisting shaft of the hoisting machine (15);
step4: the main lifting oil cylinder (2) is regulated to be in a non-pressure free telescopic state through a hydraulic control valve, and auxiliary lifting oil cylinders (4) at two sides are started to enable the upper first top ladder (3) and the second top ladder (1) to rotate to a certain height;
step5: the main lifting oil cylinders (2) are connected into a pressurized working state through the hydraulic control valve, the auxiliary lifting oil cylinders (4) are adjusted to be in a non-pressurized free telescopic state, the main lifting oil cylinders (2) on two sides are started, the inclined support legs (7) are driven through the main lifting oil cylinders (2), the second top crawling ladder (1) is further lifted until the top of the crawling ladder approaches to the top wall (29) of the flood discharge flow channel (28), and then the inclined support pulleys (20) of the inclined support legs (7) and the tracks (19) are relatively fixed through bolts;
step6: then, a bottom width adjusting oil cylinder (14), a bottom tensioning oil cylinder (10) and a top tensioning oil cylinder (12) of the width adjusting mechanism are started, so that a base guide wheel (8) and an upper ladder guide wheel (18) of the overhaul platform compress two side walls of the flood discharge channel (28);
step7: the overhauling staff climbs on the base crawling ladder (5), the first top crawling ladder (3) and the second top crawling ladder (1) to overhaul the bottom and the side wall of the flood discharge flow channel (28);
step8: the winch (15) is controlled to enable the whole maintenance platform to be lifted and maintained from the bottom of the flood discharge runner (28) to the inlet in sequence.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810298454.XA CN108425348B (en) | 2018-04-04 | 2018-04-04 | Hydraulic overhaul platform for flood discharge flow channel of hydropower station and operation method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810298454.XA CN108425348B (en) | 2018-04-04 | 2018-04-04 | Hydraulic overhaul platform for flood discharge flow channel of hydropower station and operation method |
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| CN108425348A CN108425348A (en) | 2018-08-21 |
| CN108425348B true CN108425348B (en) | 2023-06-13 |
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| CN113585195B (en) * | 2021-08-02 | 2022-07-19 | 中国长江电力股份有限公司 | Hydropower station flood discharge runner outlet suspended inclined plane fast-assembling maintenance platform and installation method thereof |
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| GB2476305B (en) * | 2009-12-18 | 2013-07-17 | Bps Access Solutions Ltd | Scaffolding |
| CN103132464B (en) * | 2013-03-27 | 2014-12-10 | 双鸭山市吉昌机械制造有限公司 | Built-in two-way sliding maintenance platform of tower crown |
| US20160083969A1 (en) * | 2014-09-22 | 2016-03-24 | E I Du Pont De Nemours And Company | Platform system for greenhouse roof |
| CN105220911B (en) * | 2015-10-28 | 2017-06-23 | 中国长江电力股份有限公司 | A kind of power station flood discharge runner inspection platform and its erection method |
| CN208105207U (en) * | 2018-04-04 | 2018-11-16 | 中国长江电力股份有限公司 | The hydraulic inspection platform of power station flood discharge runner |
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