A climbing tool for the coupling flange of a hydroelectric generator in a hydropower plant

Abstract

This utility model discloses a climbing tool for a hydroelectric generator coupling flange in a hydropower plant, including a ladder. Support plates are installed on both sides of the top of the ladder, with their centerlines forming an angle. The centerlines of the two support plates correspond to the center of the hydroelectric generator coupling flange, respectively. Each support plate includes a top plate and a side plate fixed to the lower side of one end of the top plate. The top plate supports the top surface of the hydroelectric generator coupling flange, and the side plate supports the circumferential surface of the hydroelectric generator coupling flange. By installing support plates on both sides of the top of the ladder, and supporting the hydroelectric generator coupling flange with these support plates, the ladder is supported, improving its stability.

Description

Technical Field

[0001] This utility model relates to the technical field of auxiliary tools for the maintenance of hydro turbine generators, and in particular to a climbing tool for the coupling flange of a hydro turbine generator in a hydropower plant. Background Technology

[0002] The coupling flange of the hydropower plant's turbine generator unit has a curved surface. When using the existing ladder, the upper end of the ladder rests against the rounded corner of the upper side of the coupling flange. This causes the ladder to sway from side to side when personnel climb up and down, resulting in poor stability and a significant safety risk. Therefore, based on the actual site conditions, on-site technicians proposed this application for a climbing tool for the coupling flange of the hydropower plant's turbine generator.

[0003] A search revealed that Chinese patent document CN215255986U, published on December 21, 2021, discloses a ladder for the main shaft flange of a hydro-generator. The ladder is telescopic, and there are two clamps, each rotatably connected to one of the two legs at the bottom of the ladder. The clamps have an internal anti-slip pad, and their width can be adjusted using screws. Its key feature is the use of clamps at the bottom to secure the ladder and prevent horizontal and vertical sliding. However, its limitation is that due to structural differences in our power plant's hydro-generator units, the bottom of the ladder cannot be secured using clamps; therefore, this structure cannot be applied to our power plant's hydro-generator units. Utility Model Content

[0004] The technical problem to be solved by this utility model is to address the problems existing in the background art and provide a climbing tool for the coupling flange of a hydropower plant turbine generator. By installing support plates on both sides of the top of the ladder, the ladder is supported on the coupling flange of the turbine generator, thereby improving stability.

[0005] To achieve the above-mentioned technical features, the purpose of this utility model is as follows: A climbing tool for a hydropower plant turbine generator coupling flange includes a ladder, with support plates installed on both sides of the top of the ladder. The centerlines of the two support plates have an included angle α, and the centerlines of the two support plates correspond to the center of the turbine generator coupling flange, respectively. The support plate includes a top plate and a side plate fixed to the lower side of one end of the top plate. The top plate is used to support the top surface of the turbine generator coupling flange, and the side plate is used to support the circumferential surface of the turbine generator coupling flange.

[0006] The side plate is provided with mounting holes, and a mounting component is fixedly connected to the side plate away from the top plate. There is an installation space between the mounting component and the mounting holes. A magnetic base is installed in the installation space, and the magnetic surface of the magnetic base is located inside the mounting holes.

[0007] The mounting component includes a first plate and a second plate. One end of the first plate is fixedly connected to the side plate, and the other end is fixedly connected to the second plate. The second plate is parallel to the side plate. A through hole is provided on the second plate. The threaded end of the screw passes through the through hole and is screwed into the first threaded hole on the magnetic base for fixation.

[0008] The top of the ladder is also equipped with a first hinge seat, and a second hinge seat is fixedly connected to the support plate. The first hinge seat and the second hinge seat are hinged together by a pin.

[0009] The weight of one end of the side plate is greater than the weight of one end of the top plate, and the top plate is in a horizontal position when the ladder is tilted.

[0010] The first hinge base includes a base plate and a hinge plate fixed to the base plate. The base plate is used to connect with the ladder. The hinge plate is provided with a first hinge hole. The hinge plate and the base plate have an included angle b. The second hinge base consists of two ear plates. The ear plates are provided with a second hinge hole. The hinge plate is inserted between the two ear plates. The pin passes through the first hinge hole and the second hinge hole.

[0011] The top two sides of the ladder are respectively fixedly installed with card seats, and the first hinge seat is detachably connected to the card seats.

[0012] The card holder has a longitudinal convex groove on the side facing the support plate. The top of the convex groove is closed. The lower end of the card holder has a second threaded hole in the convex groove. The base plate is inserted into the convex groove from the lower end of the card holder. The limiting screw is screwed into the second threaded hole to fix the first hinge seat in the card holder.

[0013] Anti-slip plates are fixedly installed on the side of the top plate and side plate that are in contact with the coupling flange of the hydro-generator.

[0014] The ladder is fixedly equipped with footboards at the bottom, and anti-slip plates are fixedly installed at the bottom of the footboards.

[0015] Compared with the prior art, the outstanding features of this utility model, which adopts the above technical solution, are:

[0016] 1. This utility model improves the stability of the ladder by installing support plates on both sides of the top of the ladder and supporting the ladder on the coupling flange of the water turbine generator through the support plates on both sides.

[0017] 2. By installing a magnetic base, this utility model further improves stability by magnetically connecting and fixing the support plate to the coupling flange of the hydro-generator.

[0018] 3. This utility model adapts to the inclination angle of the ladder by hinged connection between the support plate and the ladder, thus ensuring the fit between the top plate and the side plate and the coupling flange of the hydro-generator.

[0019] 4. The weight of one end of the side plate of this utility model is greater than the weight of one end of the top plate. The gravity adaptive structure of the support plate ensures that the top plate is in a horizontal state and the side plate is in a longitudinal state, regardless of the inclination angle of the ladder, which facilitates the installation of the ladder.

[0020] 5. The ladder of this utility model has a bracket welded to both sides of its top, and the first hinge bracket is detachably connected to the bracket. After the work is completed, the first hinge bracket and the support plate can be removed for easy storage of the ladder, and also for use in other working conditions where the support plate is not required. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0022] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0023] Figure 2 for Figure 1 Enlarged structural diagram at point A in the middle.

[0024] Figure 3 This is a schematic diagram of the structure of the mounting bracket on the ladder of this utility model.

[0025] Figure 4 This is a schematic diagram of the structure of the support plate and the ladder hinged together in this utility model.

[0026] Figure 5 This is a schematic diagram of the hinged connection between the support plate and the ladder of this utility model from another perspective.

[0027] Figure 6 This is a three-dimensional structural diagram of the first hinge seat in this utility model.

[0028] Figure 7 This is a top view of the first hinge seat in this utility model.

[0029] Figure 8 This is a three-dimensional structural diagram of the support plate in this utility model.

[0030] Figure 9 This is a three-dimensional structural diagram of the support plate from another perspective in this utility model.

[0031] Figure 10 This is a three-dimensional structural diagram of the magnetic base in this utility model.

[0032] Figure 11 This is a front view structural diagram of the present invention in use.

[0033] Figure 12This is a schematic diagram of the right-side structure of the present invention in use.

[0034] Figure 13 This is a top view of the structure of the present invention in use.

[0035] Figure label:

[0036] 100mm coupling flange for hydro-generator;

[0037] 10 ladder, 11 side frame, 12 steps, 13 card seat, 131 convex groove, 132 second threaded hole, 133 limit screw, 14 foot plate;

[0038] First hinge seat 20, base plate 21, hinge plate 22, first hinge hole 23;

[0039] Support plate 30, center line 301, top plate 31, side plate 32, second hinge seat 33, second hinge hole 34, mounting hole 35, mounting piece 36, first plate 361, second plate 362, through hole 37, screw 38.

[0040] 40mm pin;

[0041] Magnetic base 50, first threaded hole 51, rotary switch 52. Detailed Implementation

[0042] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0043] It should be noted that the use of terms such as "an embodiment," "an embodiment," "an exemplary embodiment," and "some embodiments" in the specification indicates that the described embodiment may include a specific feature, structure, or characteristic, but not every embodiment necessarily includes that specific feature, structure, or characteristic. Furthermore, when a specific feature, structure, or characteristic is described in connection with an embodiment, implementing such a feature, structure, or characteristic in conjunction with other embodiments (whether explicitly described or not) should be within the knowledge of those skilled in the art.

[0044] Example 1:

[0045] See Figure 1-13A climbing tool for a hydroelectric generator coupling flange in a hydropower plant includes a ladder 10. Support plates 30 are installed on both sides of the top of the ladder 10. The centerlines 301 of the two support plates 30 form an angle α, and the centerlines 301 of the two support plates 30 correspond to the centers of the hydroelectric generator coupling flange 100. Each support plate 30 includes a top plate 31 and a side plate 32 fixed to the lower side of one end of the top plate 31. The top plate 31 supports the top surface of the hydroelectric generator coupling flange 100, and the side plate 32 supports the circumferential surface of the hydroelectric generator coupling flange 100. By installing support plates 30 on both sides of the top of the ladder 10, and by having the two side support plates 30 support the hydroelectric generator coupling flange 10, the stability of the ladder 10 is improved.

[0046] Specifically, such as Figure 1 As shown, the existing ladder 10 includes two side frames 11 and steps 12 fixed between the two side frames 11. The ladder 10 is constructed by welding pipes and plates. When installing the support plates 30, the two support plates 30 are respectively installed on top of the two side frames 11, and the two support plates 30 are located on the same side of the two side frames 11. See [link / reference] Figure 13 The center lines 301 of the two support plates 30 have an included angle α. The center lines 301 of the two support plates 30 correspond to the center of the turbine generator coupling flange 100, so that the two support plates 30 can be adapted to the outer circumference of the turbine generator coupling flange 100, thereby stably supporting the ladder 10.

[0047] Example 2:

[0048] Based on Example 1, see Figure 4 , 5 8, 9. The side plate 32 has mounting holes 35. A mounting component 36 is fixedly connected to the side plate 32 on the side away from the top plate 31. There is an installation space between the mounting component 36 and the mounting holes 35. A magnetic base 50 is installed within this space, with the magnetic surface of the magnetic base 50 located within the mounting holes 35. By installing the magnetic base 50, the support plate 30 is further magnetically connected and fixed to the turbine generator coupling flange 100, further improving stability. For use, refer to... Figure 10 The magnetic force of the magnetic base 50 can be turned on or off by rotating the knob switch 52.

[0049] In this embodiment, see Figure 8 , 9 The mounting component 36 includes a first plate 361 and a second plate 362. One end of the first plate 361 is fixedly connected to the side plate 32, and the other end is fixedly connected to the second plate 362. The second plate 362 is parallel to the side plate 32. A through hole 37 is provided on the second plate 362. The threaded end of the screw 38 passes through the through hole 37 and is screwed and fixed to the first threaded hole 51 on the magnetic base 50.

[0050] When installing the magnetic base 50, first remove the rotary switch 52 from the magnetic base 50. Insert the end of the magnetic base 50 with the first threaded hole 51 into the mounting hole 35 until that end abuts against the second plate 362. Then, pass the threaded end of the screw 38 through the through hole 37 and screw it into the first threaded hole 51 on the magnetic base 50 to secure it. Afterward, reinstall the rotary switch 52. At this point, see... Figure 4 The magnetic surface of the magnetic base 50 is located inside the mounting hole 35 and is roughly flush with the inner side of the side plate 32.

[0051] Example 3:

[0052] Based on Example 1 or Example 2, see Figure 2 , 4 5. A first hinge seat 20 is also installed on the top of the ladder 10, and a second hinge seat 33 is fixedly connected to the support plate 30. The first hinge seat 20 and the second hinge seat 33 are hinged together by a pin 40. By hinged to the ladder 10, the support plate 30 can be adapted to the tilt angle of the ladder 10, ensuring that the top plate 31 and the side plate 32 fit with the coupling flange 100 of the hydro-generator.

[0053] Furthermore, the weight at one end of the side plate 32 is greater than the weight at one end of the top plate 31, so that when the ladder 10 is tilted, the top plate 31 is in a horizontal position. With the above structure, when setting up the climbing equipment, the workers can only support the upper end of the ladder 10 onto the turbine generator coupling flange 100 on the working surface. The gravity-adaptive structure of the support plate 30 ensures that the top plate 31 is in a horizontal position and the side plate 32 is in a longitudinal position regardless of the tilt angle of the ladder 10, which facilitates the installation of the ladder 10.

[0054] Specifically, see Figure 4 , 5 6, 7, The first hinge seat 20 includes a base plate 21 and a hinge plate 22 fixed to the base plate 21. The base plate 21 is used to connect with the ladder 10. The hinge plate 22 is provided with a first hinge hole 23. The hinge plate 22 and the base plate 21 have an included angle b. The second hinge seat 33 consists of two ear plates. The ear plates are provided with a second hinge hole 34. The hinge plate 22 is inserted between the two ear plates. The pin 40 passes through the first hinge hole 23 and the second hinge hole 34.

[0055] Example 4:

[0056] Based on Example 3, see Figure 2 , 3 The top two sides of the ladder 10 are respectively welded with a bracket 13, and the first hinge seat 20 is detachably connected to the bracket 13. After the work is completed, the first hinge seat 20 and the support plate 30 can be removed to facilitate the storage of the ladder 10, and also to facilitate the use of the ladder 10 in other working conditions where the support plate 30 is not required.

[0057] For details, see Figure 2 , 3 The card holder 13 has a longitudinal convex groove 131 on the side facing the support plate 30. The top of the card holder 13 is closed at the top of the convex groove 131. The lower end of the card holder 13 has a second threaded hole 132 located in the convex groove 131. The base plate 21 is inserted into the convex groove 131 from the lower end of the card holder 13. The limiting screw 133 is screwed and fixed to the second threaded hole 132 to limit the first hinge seat 20 in the card holder 13. When disassembling the first hinge seat 20 together with the support plate 30, the limiting screw 133 is removed. At this time, there is no limiting screw 133 blocking the convex groove 131, and the first hinge seat 20 can slide down and out.

[0058] Example 5:

[0059] Based on embodiments 1, 2, 3, or 4, anti-slip plates are fixedly installed on the sides of the top plate 31 and side plate 32 that contact the coupling flange 100 of the hydro-generator. The anti-slip plates are not shown in the figure. The anti-slip plates can be rubber or silicone plates, and can be adhesively fixed to the top plate 31 and side plate 32.

[0060] See Figure 1 A footboard 14 is fixedly installed at the bottom of the ladder 10, and an anti-slip plate is fixedly installed at the bottom of the footboard 14. Similarly, the anti-slip plate can be a rubber plate or a silicone plate, and the anti-slip plate can be glued and fixed to the bottom of the footboard 14.

[0061] The method of use or principle of this utility model:

[0062] See Figure 11 , 12 13. When setting up climbing equipment, the workers support the upper end of the climbing ladder 10 on the working surface onto the turbine generator coupling flange 100. The top plate 31 of the support plate 30 is used to support the top surface of the turbine generator coupling flange 100, and the side plate 32 is used to support the circumferential surface of the turbine generator coupling flange 100, thereby stably supporting the climbing ladder 10. The structure is simple.

[0063] While specific embodiments of the present invention have been described above, those skilled in the art should understand that the specific embodiments described are merely illustrative and not intended to limit the scope of the present invention. Any modifications and variations made by those skilled in the art in accordance with the spirit of the present invention should be covered within the scope of protection of the claims of the present invention.

Claims

1. A climbing tool for the coupling flange of a hydroelectric generator in a hydropower plant, comprising a ladder (10), characterized in that: The ladder (10) has support plates (30) installed on both sides of the top. The center lines (301) of the two support plates (30) have an included angle α. The center lines (301) of the two support plates (30) correspond to the center of the turbine generator coupling flange (100). The support plate (30) includes a top plate (31) and a side plate (32) fixed to the lower side of one end of the top plate (31). The top plate (31) is used to support the top surface of the turbine generator coupling flange (100), and the side plate (32) is used to support the circumferential surface of the turbine generator coupling flange (100).

2. The climbing tool for the coupling flange of a hydroelectric generator in a hydropower plant according to claim 1, characterized in that: The side plate (32) is provided with mounting holes (35). A mounting component (36) is fixedly connected to the side plate (32) away from the top plate (31). There is an installation space between the mounting component (36) and the mounting hole (35). A magnetic seat (50) is installed in the installation space. The magnetic surface of the magnetic seat (50) is located in the mounting hole (35).

3. The climbing tool for the coupling flange of a hydroelectric generator in a hydropower plant according to claim 2, characterized in that: The mounting component (36) includes a first plate (361) and a second plate (362). One end of the first plate (361) is fixed to the side plate (32), and the other end is fixed to the second plate (362). The second plate (362) is parallel to the side plate (32). A through hole (37) is provided on the second plate (362). The threaded end of the screw (38) passes through the through hole (37) and is screwed and fixed to the first threaded hole (51) on the magnetic base (50).

4. A climbing tool for the coupling flange of a hydroelectric generator in a hydropower plant according to any one of claims 1 to 3, characterized in that: The top of the ladder (10) is also equipped with a first hinge seat (20), and a second hinge seat (33) is fixedly connected to the support plate (30). The first hinge seat (20) and the second hinge seat (33) are hinged together by a pin (40).

5. A climbing tool for the coupling flange of a hydroelectric generator in a hydropower plant according to claim 4, characterized in that: The weight of one end of the side plate (32) is greater than the weight of one end of the top plate (31). When the ladder (10) is tilted, the top plate (31) is in a horizontal state.

6. A climbing tool for the coupling flange of a hydroelectric generator in a hydropower plant according to claim 4, characterized in that: The first hinge seat (20) includes a base plate (21) and a hinge plate (22) fixed on the base plate (21). The base plate (21) is used to connect with the ladder (10). The hinge plate (22) is provided with a first hinge hole (23). The hinge plate (22) and the base plate (21) have an included angle b. The second hinge seat (33) consists of two ear plates. The ear plates are provided with a second hinge hole (34). The hinge plate (22) is inserted between the two ear plates. The pin (40) passes through the first hinge hole (23) and the second hinge hole (34).

7. A climbing tool for the coupling flange of a hydroelectric generator in a hydropower plant according to claim 6, characterized in that: The top two sides of the ladder (10) are respectively fixedly installed with card seats (13), and the first hinge seat (20) is detachably connected to the card seats (13).

8. A climbing tool for the coupling flange of a hydroelectric generator in a hydropower plant according to claim 7, characterized in that: The card holder (13) has a longitudinal convex groove (131) on the side facing the support plate (30). The top of the card holder (13) is closed. The lower end of the card holder (13) is provided with a second threaded hole (132) in the convex groove (131). The base plate (21) is inserted into the convex groove (131) from the lower end of the card holder (13). The limiting screw (133) is screwed and fixed to the second threaded hole (132) to limit the first hinge seat (20) in the card holder (13).

9. A climbing tool for the coupling flange of a hydroelectric generator in a hydropower plant according to claim 1, characterized in that: The top plate (31) and side plate (32) are respectively fixedly installed with anti-slip plates on the side that contacts the coupling flange (100) of the hydro generator.

10. A climbing tool for the coupling flange of a hydroelectric generator in a hydropower plant according to claim 1, characterized in that: The bottom of the ladder (10) is fixedly equipped with a footboard (14), and the bottom of the footboard (14) is fixedly equipped with an anti-slip plate.

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