阅读说明：本技术 立式水轮机导叶检修快速搭拆平台及其搭设方法 (Vertical water turbine guide vane overhauling rapid assembling and disassembling platform and assembling method thereof ) 是由 董钟明 谢小俊 郑璇 周玉国 赵爽 于 2021-01-14 设计创作，主要内容包括：一种立式水轮机导叶检修快速搭拆平台及其搭设方法,包括活动钩板,活动钩板与固定钩板滑动连接,活动钩板和固定钩板之间通过限位件限位；固定钩板与悬伸杆连接,悬伸杆与踏板支撑连接,踏板支撑上设有踏板,踏板边缘设有围栏。本发明使用时安装于固定导叶进水侧,每两个固定导叶之间为一个检修平台安装单元,使用时可根据现场实际需要来选择安装于哪些固定导叶之间,整个装置采用模块化设计,可使平台拆装更为快速便捷,节省人力物力。(A vertical water turbine guide vane overhaul quick assembling and disassembling platform and an assembling method thereof comprise a movable hook plate, wherein the movable hook plate is connected with a fixed hook plate in a sliding manner, and the movable hook plate and the fixed hook plate are limited by a limiting part; the fixed hook plate is connected with the overhanging rod, the overhanging rod is connected with the pedal support, the pedal support is provided with a pedal, and the edge of the pedal is provided with a fence. When the maintenance platform is used, the maintenance platform is arranged on the water inlet side of the fixed guide vanes, an maintenance platform installation unit is arranged between every two fixed guide vanes, and the maintenance platform can be selectively installed between the fixed guide vanes according to the actual requirements on site.)

1. The utility model provides a vertical turbine stator overhauls takes fast and tears platform open which characterized in that: the hook comprises a movable hook plate (4), wherein the movable hook plate (4) is connected with a fixed hook plate (3) in a sliding manner, and the movable hook plate (4) and the fixed hook plate (3) are limited by a limiting part; the fixed hook plate (3) is connected with the overhanging rod (5), the overhanging rod (5) is connected with the pedal support (6), the pedal (7) is arranged on the pedal support (6), and the edge of the pedal (7) is provided with a fence (8).

2. The vertical turbine guide vane overhaul quick assembling and disassembling platform as claimed in claim 1, wherein: the fixed hook plate (3) one end is equipped with the external screw thread pole, has cup jointed movable hook plate (4) on the external screw thread pole, the locating part be nut (10), nut (10) and external screw thread pole screw-thread fit, nut (10) are used for adjusting and the position of restriction movable hook plate (4).

3. The vertical turbine guide vane overhaul quick assembling and disassembling platform as claimed in claim 2, wherein: the external thread rod is provided with a bolt hole, the external thread rod is connected with the concave groove plate through a cylindrical pin (11), and the concave groove plate is connected with the overhanging rod (5) through the cylindrical pin (11).

4. The vertical turbine guide vane overhaul quick assembling and disassembling platform as claimed in claim 1, wherein: the pedal support (6) comprises two first rods (61) which are arranged in parallel, two second rods (62) are hinged between the two first rods (61), limiting blocks (12) are arranged at the end parts of the second rods (62), and the limiting blocks (12) are used for being attached to the side surfaces of the first rods (61).

5. The vertical turbine guide vane overhaul quick assembling and disassembling platform as claimed in claim 4, wherein: the first rod (61) is connected with the overhanging rod (5) through a locker (13).

6. The vertical turbine guide vane overhaul quick assembling and disassembling platform as claimed in claim 5, wherein: the locker (13) comprises a half-moon-shaped bracket (13.1) and an annular clamp (13.2), the half-moon-shaped bracket (13.1) is connected with a butterfly bolt (13.3), and the butterfly bolt (13.3) is connected with a first rod (61); a driven pressing plate (13.4) is arranged on the half-moon-shaped bracket (13.1), a pressing groove (13.5) is arranged on the annular hoop (13.2), the annular hoop (13.2) is sleeved on the suspension rod (5), and the pressing groove (13.5) is used for pressing the driven pressing plate (13.4); the annular clamp (13.2) is provided with a positioning bolt hole, the positioning bolt hole is used for mounting a screw, and the screw is used for locking the position of the annular clamp (13.2); a strip-shaped hole (17) is formed in the first rod (61), and a butterfly bolt (13.3) is arranged in the strip-shaped hole (17) in a penetrating mode.

7. The vertical turbine guide vane overhaul quick assembling and disassembling platform as claimed in claim 5 or 6, wherein: the first rod (61) is provided with a fence seat (14), and the fence seat (14) is used for being connected with a fence (8).

8. The vertical turbine guide vane overhaul quick assembling and disassembling platform as claimed in claim 7, wherein: the fence seat (14) is provided with an inserting barrel, the fence (8) comprises a vertical rod (15) and a horizontal rod, the vertical rod (15) and the horizontal rod are connected through a lock sleeve (16), and the bottom of the vertical rod (15) is used for being inserted into the inserting barrel in a socket mode.

9. The vertical turbine guide vane overhaul quick assembling and disassembling platform as claimed in claim 8, wherein: the vertical rod (15) is of a telescopic rod structure, the vertical rod (15) comprises an upper section and a lower section, and the upper section of the vertical rod (15) is fixed through a lock sleeve (16).

10. The method for building the vertical turbine guide vane overhaul quick lap-disassembly platform as claimed in any one of claims 1 to 9, which is characterized by comprising the following steps:

s1: in the space between the fixed guide vanes, the hole of the movable hook plate (4) is sleeved on the external thread rod of the fixed hook plate (3), and the nut (10) is screwed into the external thread rod of the fixed hook plate (3) to form a locking device;

s2: in the space between the fixed guide vanes, pin holes on the concave groove plate of the suspension rod (5) are aligned with pin holes on the screw of the fixed hook plate (3), and a cylindrical pin (11) is inserted;

s3: moving a structure consisting of the locking device and the suspension rod (5), so that two grooves of the locking device are clamped on the fixed guide vane, and rotating the nut (10) by using the deflector rod so that the locking device is clamped on the fixed guide vane;

s4: installing locking devices and suspension rods (5) on other fixed guide vanes according to the steps from S1 to S3;

s5: in the space between the fixed guide vanes, the pedal support (6) is unfolded from a folded state, and the limiting block (12) is rotated by 90 degrees to limit the relative positions of the first rod (61) and the second rod (62) and prevent the pedal support (6) from being folded accidentally;

s6: carrying the pedal support (6) on the two installed suspension rods (5), properly adjusting the relative positions of the four half-moon-shaped brackets (13.1) on the pedal support (6) and the suspension rods (6) in the installation process, so that the half-moon-shaped brackets (13.1) are just clamped on the suspension rods (6), and the direction of the driven pressure plate (13.4) faces to one side of the corresponding annular clamp (13.2);

s7: carrying and placing the pedal (7) on the installed pedal support (6);

s8: after the pedal (7) is installed, an installer stands on the pedal, slides and sleeves the annular clamp (13.2) on the suspension rod (5), enables the pressing groove (13.5) on the annular clamp (13.2) to press the driven pressing plate (13.4), and screws on the annular clamp (13.2) are screwed by a spanner to lock the annular clamp (13.2);

s9: installing a side rail (8), inserting a rail vertical rod (15) into an insertion cylinder on a rail seat (14), properly adjusting a lock sleeve (16) to be loose, and extending the upper section of the vertical rod (15) from the inner part of the lower section to ensure that the height of the vertical rod meets the use requirement;

s10: installing other pedal supports (6), pedals (7) and fences (8) according to the steps of S5-S10;

s11: the end part fence (9) is installed in the same way as the side fence (8).

Technical Field

The invention belongs to the field of equipment for overhauling guide vanes of vertical water turbines, and particularly relates to a quick assembling and disassembling platform for overhauling guide vanes of a vertical water turbine and an assembling method thereof.

Background

At present, when a hydroelectric generating set carries out maintenance work such as movable guide vane end elevation clearance measurement and runner inspection, because of the huge size of a giant water turbine, the position of a seat ring in a volute is highly suspended near the edge, in order to ensure the work safety and prevent falling, a steel pipe scaffold is generally erected on the periphery of a fixed guide vane to serve as a maintenance platform, or a hemp rope or a steel wire rope is used for binding the periphery of the fixed guide vane to form a protection ring, and a maintenance worker works in the movable guide vane and the maintenance platform or the protection ring region. This conventional approach has significant disadvantages:

1. a large amount of manpower is consumed to set up a temporary maintenance platform or bind a protection ring;

2. the scaffold is disassembled and assembled only by professional personnel, the disassembling and assembling period is long, and the number of pipe fittings and fasteners is large;

3. the danger itself is high when setting up the scaffold or setting up the guard ring.

Disclosure of Invention

In view of the technical problems in the background art, the vertical water turbine guide vane overhauling quick assembling and disassembling platform and the assembling method thereof provided by the invention are arranged on the water inlet side of the fixed guide vanes during use, the overhauling platform installation unit is arranged between every two fixed guide vanes, the installation can be selected to be arranged between the fixed guide vanes according to the actual needs on site during use, and the whole device adopts a modular design, so that the platform can be disassembled and assembled more quickly and conveniently, and manpower and material resources are saved.

In order to solve the technical problems, the invention adopts the following technical scheme to realize:

a vertical water turbine guide vane overhaul quick assembling and disassembling platform and an assembling method thereof comprise a movable hook plate, wherein the movable hook plate is connected with a fixed hook plate in a sliding manner, and the movable hook plate and the fixed hook plate are limited by a limiting part; the fixed hook plate is connected with the overhanging rod, the overhanging rod is connected with the pedal support, the pedal support is provided with a pedal, and the edge of the pedal is provided with a fence.

In the preferred scheme, fixed hook plate one end be equipped with the external screw thread pole, the movable hook plate has been cup jointed on the external screw thread pole, locating part be the nut, nut and external screw thread pole screw-thread fit, the nut is used for adjusting and the position of restriction movable hook plate.

In the preferred scheme, the external thread rod is provided with a bolt hole, the external thread rod is connected with the concave groove plate through a cylindrical pin, and the concave groove plate is connected with the overhanging rod through a cylindrical pin.

In the preferred scheme, the pedal support comprises two first rods arranged in parallel, two second rods are hinged between the first rods, limiting blocks are arranged at the two ends of the first rods, and the limiting blocks are used for being attached to one side face of the first rod.

In a preferred scheme, the first rod is connected with the overhanging rod through a locker.

In a preferred scheme, the locker comprises a half-moon-shaped bracket and an annular clamp, the half-moon-shaped bracket is connected with a butterfly bolt, and the butterfly bolt is connected with a rod; the half-moon-shaped bracket is provided with a passive pressing plate, the annular hoop is provided with a pressing groove, the annular hoop is sleeved on the suspension rod, and the pressing groove is used for pressing the passive pressing plate; the annular hoop is provided with a positioning bolt hole, the positioning bolt hole is used for installing a screw, and the screw is used for locking the position of the annular hoop; a strip-shaped hole is formed in the first rod, and a butterfly bolt penetrates through the strip-shaped hole.

In a preferable scheme, a fence seat is arranged on the first rod and is used for being connected with a fence.

In the preferred scheme, the rail seat is provided with an inserting barrel, the rail comprises a vertical rod and a horizontal rod, the vertical rod and the horizontal rod are connected through a lock sleeve, and the bottom of the vertical rod is used for being inserted into the inserting barrel in a socket mode.

In an optimized scheme, the vertical rod is of a telescopic rod structure and comprises an upper section and a lower section, and the upper section of the vertical rod is fixed through a lock sleeve.

This patent can reach following beneficial effect:

1. the modular design is adopted, so that the platform can be assembled and disassembled more quickly and conveniently, and manpower and material resources are saved;

2. the pedal support and the railing structure are telescopic or foldable, so that the size of the pedal support and the railing structure during carrying and storage is reduced.

3. The locker has adopted semilune bracket, annular clamp and butterfly bolt structure, and the annular clamp is used for cup jointing for a long time on overhanging rod, and semilune bracket and annular clamp adopt detachable structure, its purpose: the footboard of being convenient for supports dismantles because half moon shape bracket is connected with the footboard support, when loosening and removing annular clamp, can support the footboard and take off, dismantles simple to operate.

4. Fixed hook plate and overhanging rod adopt detachable design, and do not adopt fixed connection design, its aim at: the length sum of the fixed hook plate and the overhanging rod is about meter, the weight is heavy, and the operator is not easy to operate during installation and is easy to have a falling accident.

5. After the locking device formed by combining the movable hook plate and the fixed hook plate is adopted, the nuts are screwed to enable the locking device to clamp the fixed guide vanes, so that the supporting moment required by the overhanging platform is provided, and the platform is prevented from overturning.

6. A second rod supported by the pedal is provided with a limiting block. After the pedal support is unfolded from the folded state, the limiting block is rotated, and the pedal support can be prevented from being folded accidentally.

7. A bar-shaped hole or a telescopic structure is arranged at two ends of a rod supported by the pedal, so that the pedal type adjustable guide vane can adapt to fixed guide vane types and units of the same type with small difference of installation angles.

Drawings

The invention is further illustrated by the following examples in conjunction with the accompanying drawings:

FIG. 1 is a three-dimensional block diagram of the present invention;

FIG. 2 is an enlarged view of FIG. 1 at A;

FIG. 3 is a view showing the construction of the pedal support and suspension rod connection according to the present invention;

FIG. 4 is a schematic view of the fixed hook plate, the movable hook plate, the suspension rod and the pedal support connection structure of the present invention;

FIG. 5 is a view showing the construction of the pedal support and locker attachment according to the present invention;

FIG. 6 is a diagram illustrating the effect of the locking device of the present invention;

FIG. 7 is a view showing the folding effect of the step support according to the present invention;

FIG. 8 is a view of the connection of the seat, post and sleeve of the present invention;

FIG. 9 is a view showing the effect of the installation of the present invention (with a portion of the stay vanes cut away);

fig. 10 is a view of a conventional stay vane mounting position.

In the figure: the device comprises a fixed guide vane 1, a fixed guide vane overhauling platform 2, a fixed hook plate 3, a movable hook plate 4, a suspension rod 5, a pedal support 6, a first rod 61, a second rod 62, a pedal 7, a fence 8, an end fence 9, a nut 10, a cylindrical pin 11, a limiting block 12, a locker 13, a half-moon-shaped bracket 13.1, an annular clamp 13.2, a butterfly bolt 13.3, a passive pressing plate 13.4, a pressing groove 13.5, a fence seat 14, a vertical rod 15 and a lock sleeve 16.

Detailed Description

The preferable scheme is as shown in fig. 1 to 10, the quick assembling and disassembling platform for the vertical water turbine guide vane overhaul and the assembling method thereof comprise a movable hook plate 4, wherein the movable hook plate 4 is in sliding connection with a fixed hook plate 3, and the movable hook plate 4 and the fixed hook plate 3 are limited by a limiting piece; the fixed hook plate 3 is connected with the overhanging rod 5, the overhanging rod 5 is connected with the pedal support 6, the pedal support 6 is provided with a pedal 7, and the edge of the pedal 7 is provided with a fence 8.

The movable hook plate 4 and the fixed hook plate 3 are both provided with arc-shaped grooves according to the structure of the fixed guide vane 1, and the arc-shaped grooves are used for clamping two end parts of the fixed guide vane 1.

Furthermore, an external thread rod is arranged at one end of the fixed hook plate 3, the movable hook plate 4 is sleeved on the external thread rod, the limiting part is a nut 10, the nut 10 is in threaded fit with the external thread rod, and the nut 10 is used for adjusting and limiting the position of the movable hook plate 4.

Furthermore, a bolt hole is formed in the external thread rod, the external thread rod is connected with the concave groove plate through a cylindrical pin 11, and the concave groove plate is connected with the overhanging rod 5 through the cylindrical pin 11.

Further, the pedal support 6 comprises two first rods 61 arranged in parallel, two second rods 62 are hinged between the two first rods 61, the end portions of the second rods 62 are provided with limiting blocks 12, and the limiting blocks 12 are used for being attached to the side surfaces of the first rods 61. The two first rods 61 and the two second rods 62 form a closed four-bar linkage, in order to avoid the rotation of the second rods 62, the limiting blocks 12 of the square body are designed, the first rods 61 and the second rods 62 are of square tube structures, and after the limiting blocks 12 are attached to the side faces of the first rods 61, the first rods 61 and the second rods 62 are not prone to rotating.

Further, the first rod 61 is connected to the suspension rod 5 through the locker 13.

The locker 13 comprises a half-moon-shaped bracket 13.1 and an annular clamp 13.2, the half-moon-shaped bracket 13.1 is connected with a butterfly bolt 13.3, and the butterfly bolt 13.3 is connected with a first rod 61; a driven pressing plate 13.4 is arranged on the half-moon-shaped bracket 13.1, a pressing groove 13.5 is arranged on the annular hoop 13.2, the annular hoop 13.2 is sleeved on the suspension rod 5, and the pressing groove 13.5 is used for pressing the driven pressing plate 13.4; the annular clamp 13.2 is provided with a positioning bolt hole, the positioning bolt hole is used for mounting a screw, and the screw is used for locking the position of the annular clamp 13.2; the first rod 61 is provided with a strip-shaped hole 17, and the butterfly bolt 13.3 is arranged at the strip-shaped hole 17 in a penetrating mode. Half moon shape bracket 13.1 is connected with footboard support 6, when loosening and removing annular clamp 13.2, can take off footboard support 6, dismantles simple to operate.

Further, the first rod 61 is provided with a fence seat 14, and the fence seat 14 is used for connecting with the fence 8.

Furthermore, an inserting cylinder is arranged on the fence seat 14, the fence 8 comprises a vertical rod 15 and a horizontal rod, the vertical rod 15 and the horizontal rod are connected through a lock sleeve 16, and the bottom of the vertical rod 15 is used for being inserted into the inserting cylinder in a socket mode. The lock sleeve 16 is of the same construction as the scaffolding connector.

Preferably, the insertion tube of the rail seat 14 can be designed with a transversely movable screw for fixing the vertical rod 15.

Further, the vertical rod 15 is a telescopic rod structure, the vertical rod 15 comprises an upper section and a lower section, and the upper section of the vertical rod 15 is fixed through a lock sleeve 16.

The working principle of the whole device is as follows:

fig. 10 is a view of the installation position of a fixed guide vane, fig. 9 is an installation example of a vertical turbine guide vane maintenance quick lap-disassembly platform and a lap-assembly method thereof on the fixed guide vane, for a better display effect, part of the fixed guide vanes 1 are not completely drawn, and the fixed guide vane maintenance platform 2 only displays the installation effect of two installation units.

As shown in fig. 4, the movable hook plate 4 and the fixed hook plate 3 are locked on the fixed guide vane by the nut 10 to form the locking device. The suspension rod 5 is connected with the guide vane locking device through a cylindrical pin 11, and the suspension rod 5 cannot rotate downwards by means of the structure of the suspension rod, so that the pedal support 6 is supported. During installation, the overhanging rod 5 and the locking device are aligned with the hole and the cylindrical pin 11 is inserted, then the overhanging rod 5 is placed to the horizontal direction, and the locking device provides moment to prevent the overturning of the cantilever structure.

As shown in fig. 6, 7 and 8, when the suspension rod 5 is completely installed, the pedal support 6 and the pedal 7 can be installed. The pedal support 6 is of a foldable structure and is provided with a stopper 12 to prevent accidental folding when opened. The pedal support 6 is provided with a long round hole and a telescopic joint to adapt to slight difference of the installation angle and distance of the suspension rod 5. The pedal support 6 and the suspension rod 5 are locked by a locker 13.

As shown in fig. 7 and 8, the vertical rods 15 of the side rails 8 and the end rails 9 are inserted into the rail seats 14 on the pedal support 6, and the vertical rods 15 are divided into an upper section and a lower section, and the upper section can be inserted into the lower section when not in use, and can be pulled out from the lower section and locked by the lock sleeve 16 when in use. Wherein the end rail 9 is mounted only at the end of the last mounting unit.

The erection method of the vertical water turbine guide vane overhaul quick assembling and disassembling platform comprises the following steps:

s1: in the space between the fixed guide vanes, the hole of the movable hook plate 4 is sleeved on the external thread rod of the fixed hook plate 3, and the nut 10 is screwed into the external thread rod of the fixed hook plate 3 to form a locking device; note that the recess in the movable hook plate 4 should be opposite the side of the fixed hook plate 3 and that the nut need not be fully tightened at this time.

S2: in the space between the fixed guide vanes, pin holes on the concave groove plate of the overhanging rod 5 are aligned with pin holes on the screw of the fixed hook plate 3, and the cylindrical pin 11 is inserted. Note that the overhanging bar 5 has its concave channel plate concave side facing upwards.

S3: the structure formed by the locking device and the overhanging rod 5 is moved to clamp the two grooves of the locking device on the fixed guide vane, and the deflector rod is used for rotating the nut 10 to clamp the locking device on the fixed guide vane. Note that the lower portion of the locking device is still in contact with the lower plane supporting the stay vanes and is not mounted in the air.

S4: and (5) installing the locking devices and the cantilever rods on other fixed guide vanes according to the steps from S1 to S3.

S5: in the space between the fixed guide vanes, the pedal support 6 is unfolded from a folded state, and the limiting block 12 is rotated by 90 degrees to limit the relative positions of the first rod 61 and the second rod 62, so that the pedal support 6 is prevented from being folded accidentally.

S6: the pedal support 6 is conveyed and placed on the two installed suspension rods 5, the relative positions of the four half-moon-shaped brackets 13.1 on the pedal support 6 and the suspension rods 6 are properly adjusted in the installation process, so that the half-moon-shaped brackets 13.1 are just clamped on the suspension rods 6, and the driven pressing plate 13.4 faces to one side of the corresponding annular clamp 13.2.

S7: the pallets 7 are carried and placed on the already mounted pallet supports 6.

S8: after the pedal 7 is installed, an installer stands on the pedal, slides the annular clamp 13.2 sleeved on the suspension rod 5, presses the driven pressing plate 13.4 by the pressing groove 13.5 on the annular clamp 13.2, and screws on the annular clamp 13.2 are screwed by a wrench to lock the annular clamp 13.2.

S9: installing the side rail 8, inserting the rail vertical rod 15 into the inserting cylinder on the rail seat 14, properly adjusting and loosening the lock sleeve 16, and extending the upper section of the vertical rod 15 from the inner part of the lower section to ensure that the height of the vertical rod reaches the use requirement.

S10: other step supports 6, steps 7 and fences 8 are installed according to steps S5-S10. During installation, the fixed guide vanes are installed in sequence from low to high from the bottom of the volute, so that the platform installed at the back can be installed by utilizing the platform installed at the front, and the convenience and the safety of installation of the platform at the back are improved.

S11: end rails 9 are mounted in the same manner as the side rails 8.

The above-described embodiments are merely preferred embodiments of the present invention, and should not be construed as limiting the present invention, and the scope of the present invention is defined by the claims, and equivalents including technical features described in the claims. I.e., equivalent alterations and modifications within the scope hereof, are also intended to be within the scope of the invention.