Tail water maintenance platform

Abstract

The utility model discloses a tail water maintenance platform, which relates to the technical field of water conservancy and hydropower, is integrally disc-shaped and comprises a framework and a support plate laid on the framework, the framework comprises a central frame, the central frame is of a regular octagonal structure, and each edge of the central frame is provided with a support arm along the radial direction; the far end of the supporting arm is sequentially provided with a hoisting lifting lug and a hanging lifting lug. The supporting plate comprises a center plate and eight fan-shaped plates, the center plate is laid on the center frame, and the fan-shaped plates are laid on the two adjacent supporting arms. The utility model has the advantages of simple structure and higher stability.

Description

Technical Field

[0001] This utility model relates to the field of water conservancy and hydropower technology, specifically a tailrace maintenance platform. Background Technology

[0002] During the maintenance of the turbine generators in the tailrace of a hydroelectric power station, a suspended platform needs to be erected so that workers can stand on it to carry out the maintenance work. Currently, since there is no readily available maintenance platform, temporary platforms are temporarily erected using loose parts before maintenance begins, which is both time-consuming and labor-intensive.

[0003] To address the aforementioned issues, the Chinese patent document "Tailwater Maintenance Platform" (patent number: 200420089369.6) discloses a tailwater maintenance platform. However, this tailwater maintenance platform has a complex structure and low stability. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a tailwater maintenance platform with a simple structure and higher stability.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a tailrace maintenance platform, which is generally disc-shaped, including a frame and a support plate laid on the frame. The frame includes a central frame, which has a regular octagonal structure, and each side of the central frame is provided with a support arm in the radial direction. The far end of the support arm is provided with a lifting lug and a suspension lug in sequence. The support plate includes a central plate and eight fan-shaped plates. The central plate is laid on the central frame, and the fan-shaped plates are laid on two adjacent support arms.

[0006] A further improvement is that the central frame is composed of eight I-beams connected end to end, and the upper and lower plates of the I-beams are respectively provided with connecting plates in the middle, and the vertical plates of the I-beams are provided with a first connecting hole in the middle.

[0007] A further improvement is that the support arm is made of I-beam aluminum, and the near end of the vertical plate of the support arm is provided with an angle plate, which is connected to the first connecting hole of the corresponding I-beam; the near ends of the upper plate and the lower plate of the support arm are respectively provided with a second connecting hole for connecting the corresponding connecting plate.

[0008] A further improvement is that the upper plate of the support arm is provided with several third connection holes for connecting the support plate.

[0009] A further improvement is that the center plate has a regular octagonal structure that is adapted to the center frame. The center plate has a first grid hole in the middle and a first clearance groove for avoiding the connecting plate and a fourth connecting hole for connecting the skeleton at the edge of the center plate.

[0010] A further improvement is made in that: a second grid hole is provided in the middle of the fan-shaped plate, and a fifth connecting hole for connecting the frame is provided at the edge of the fan-shaped plate; a second clearance groove for avoiding the connecting plate is provided at the near edge of the fan-shaped plate, and a third clearance groove for avoiding the hoisting lug and the suspension lug is provided at the far edge of the fan-shaped plate.

[0011] A further improvement is that the sector-shaped plate is composed of several flat plates connected together, and a wedge-shaped wooden block is provided at the far end of the sector-shaped plate.

[0012] A further improvement is that: at least one sector plate has a reserved notch at its far end, and a door panel is provided at the reserved notch; the door panel is connected to the sector plate by a hinge, and a handle is provided on the door panel.

[0013] A further improvement is that it also includes a lifting device, the hooks of which are connected to each lifting lug via ropes.

[0014] A further improvement is that it also includes a suspension device, which includes a chemical anchor, a hook, and an adjustable tensioner; the chemical anchor is connected to the upper end of the hook, and the chemical anchor is provided with a catch; the lower end of the adjustable tensioner is connected to a corresponding suspension lug, and the upper end of the adjustable tensioner is connected to the lower end of the hook.

[0015] The beneficial effects of this utility model are as follows:

[0016] This utility model has a simple structure. By combining a frame and support plate with a lifting device and a suspension device, it effectively improves the stability of the tailrace maintenance platform. Attached Figure Description

[0017] Figure 1 This is a perspective view of the tailwater maintenance platform in an embodiment of this utility model;

[0018] Figure 2 This is a top view of the tailwater maintenance platform in an embodiment of this utility model;

[0019] Figure 3 This is a perspective view of the skeleton in an embodiment of the present utility model;

[0020] Figure 4 This is a top view of the skeleton in an embodiment of the present invention;

[0021] Figure 5 This is a perspective view of the central frame in an embodiment of this utility model;

[0022] Figure 6 This is a perspective view of the support arm in an embodiment of the present utility model;

[0023] Figure 7 This is a top view of the center plate in an embodiment of the present invention;

[0024] Figure 8 This is a top view of the sector plate in an embodiment of this utility model;

[0025] Figure 9 This is a schematic diagram of the door panel connection in an embodiment of this utility model;

[0026] Figure 10 This is a schematic diagram of the lifting device in an embodiment of the present invention;

[0027] Figure 11 This is a schematic diagram of the suspension device in an embodiment of the present invention;

[0028] Figure 12 This is a deformation distribution diagram of the tailwater maintenance platform in an embodiment of this utility model;

[0029] Figure 13 This is a stress distribution diagram of the skeleton in an embodiment of this utility model;

[0030] Figure 14 This is a stress distribution diagram of the corner plate and the connecting plate in an embodiment of this utility model;

[0031] Figure 15 This is a stress distribution diagram of the lifting lugs and suspension lugs in an embodiment of this utility model;

[0032] Figure 16 This is a stress distribution diagram of the support plate in an embodiment of this utility model.

[0033] Figure label:

[0034] 1-Center frame; 11-I-beam; 12-Connecting plate; 13-First connecting hole;

[0035] 2-Support arm; 21-Angle plate; 22-Second connecting hole; 23-Third connecting hole; 24-Lifting lug; 25-Suspension lug;

[0036] 3-Center plate; 31-First grid hole; 32-First clearance groove; 33-Fourth connecting hole;

[0037] 4-Fan-shaped panel; 41-Second grille hole; 42-Fifth connecting hole; 43-Second clearance groove; 44-Third clearance groove; 45-Wedge-shaped wooden block; 46-Door panel; 47-Hinge; 48-Handle;

[0038] 5-Suspension device; 51-Adjustable tensioner; 52-Hook; 53-Chemical anchor; 54-Hook;

[0039] 6-Lifting device; 61-Rope. Detailed Implementation

[0040] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout.

[0041] In the description of this utility model, it should be noted that the directional terms such as "center", "horizontal (X)", "longitudinal (Y)", "vertical (Z)", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", and "counterclockwise" indicate the orientation and positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. They should not be construed as limiting the specific protection scope of this utility model.

[0042] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features. Thus, the use of "first" and "second" to define a feature may explicitly or implicitly include one or more of that feature. In the description of this utility model, "several" or "a number" means two or more, unless otherwise explicitly specified.

[0043] The following description, in conjunction with the accompanying drawings, further illustrates specific embodiments of the present invention, making the technical solution and beneficial effects of the present invention clearer and more explicit. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, but should not be construed as limiting the present invention.

[0044] See Figures 1-4 As shown, this utility model embodiment provides a tailrace maintenance platform, which is generally disc-shaped and includes a frame and a support plate laid on the frame. The frame includes a central frame 1, which has a regular octagonal structure, and each side of the central frame 1 is provided with a support arm 2 along the radial direction; the far end of the support arm 2 is provided with a hoisting lug 24 and a suspension lug 25 in sequence.

[0045] The support plate includes a central plate 3 and eight sector plates 4. The central plate 3 is laid on the central frame 1, and the sector plates 4 are laid on two adjacent support arms 2.

[0046] See Figure 5 As shown, the central frame 1 is composed of eight I-beams 11 connected end to end. The upper and lower plates of the I-beams 11 are respectively provided with connecting plates 12, and the vertical plates of the I-beams 11 are provided with first connecting holes 13 in the middle.

[0047] See Figure 6As shown, the support arm 2 is made of H-beam aluminum, and a corner plate 21 is provided near the vertical plate of the support arm 2. The corner plate 21 is connected to the first connecting hole 13 of the corresponding H-beam 11. The upper plate and lower plate of the support arm 2 are respectively provided with second connecting holes 22 for connecting the corresponding connecting plates 12 near their respective ends. Specifically, the upper plate of the support arm 2 is provided with several third connecting holes 23 for connecting the support plate.

[0048] See Figure 7 As shown, the center plate 3 has a regular octagonal structure that is compatible with the center frame 1. The center plate 3 has a first grid hole 31 in the middle and a first clearance groove 32 for avoiding the connecting plate 12 and a fourth connecting hole 33 for connecting the frame at the edge of the center plate 3.

[0049] See Figure 8 As shown, a second grid hole 41 is provided in the middle of the fan-shaped plate 4, and a fifth connecting hole 42 for connecting the frame is provided at the edge of the fan-shaped plate 4; a second clearance groove 43 for avoiding the connecting plate 12 is provided at the near edge of the fan-shaped plate 4, and a third clearance groove 44 for avoiding the lifting lug 24 and the suspension lug 25 is provided at the far edge of the fan-shaped plate 4. Specifically, the fan-shaped plate 4 is composed of several flat plates connected together, and a wedge-shaped wooden block 45 is provided at the far end of the fan-shaped plate 4.

[0050] See Figure 9 As shown, at least one sector plate 4 has a reserved notch at its far end, and a door panel 46 is provided at the reserved notch; the door panel 46 is connected to the sector plate 4 by a hinge 47, and a handle 48 is provided on the door panel 46.

[0051] See Figure 10 As shown, the tailrace maintenance platform also includes a lifting device 6, whose hooks are connected to each lifting lug 24 via ropes 61.

[0052] See Figure 11 As shown, the tailrace maintenance platform also includes a suspension device 5, which includes a chemical anchor 53, a hook 52, and an adjustable tensioner 51. The upper end of the chemical anchor 53 is connected to the hook 52, and the chemical anchor 53 is provided with a latch 54. The lower end of the adjustable tensioner 51 is connected to the corresponding suspension lug 25, and the upper end of the adjustable tensioner 51 is connected to the lower end of the hook 52.

[0053] See Figures 12-16 As shown, the maximum deformation of the tailrace maintenance platform structure is 9.7 mm, located in the center of the grid plate; the maximum stress of the aluminum alloy structure is 130 MPa, located at the screw holes of the aluminum alloy frame; the maximum stress of the steel structure is 78 MPa, located near the screw holes of the lifting lugs. All of the above stresses are less than the material yield strength. The structural safety factor is 1.85.

[0054] In the description of this specification, references to terms such as "an embodiment," "preferred," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this utility model. Illustrative expressions of the above terms in this specification do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0055] Based on the above description of the structure and principle, those skilled in the art should understand that this utility model is not limited to the specific embodiments described above. Improvements and substitutions made using techniques known in the art based on this utility model all fall within the protection scope of this utility model and should be defined by the claims.

Claims

1. A tailrace maintenance platform, generally disc-shaped, comprising a frame and support plates laid on the frame, characterized in that: The frame includes a central frame (1), which has a regular octagonal structure, and each side of the central frame (1) is provided with a support arm (2) in the radial direction; the far end of the support arm (2) is provided with a hoisting lug (24) and a suspension lug (25) in sequence. The support plate includes a central plate (3) and eight sector plates (4). The central plate (3) is laid on the central frame (1), and the sector plates (4) are laid on two adjacent support arms (2).

2. The tailrace maintenance platform according to claim 1, characterized in that: The central frame (1) is formed by connecting eight I-beams (11) end to end. The upper plate and the lower plate of the I-beams (11) are respectively provided with connecting plates (12), and the vertical plate of the I-beams (11) is provided with a first connecting hole (13) in the middle.

3. The tailrace maintenance platform according to claim 2, characterized in that: The support arm (2) is made of aluminum I-beams, and a corner plate (21) is provided near the vertical plate of the support arm (2), which is connected to the first connecting hole (13) of the corresponding I-beam (11); the upper plate and the lower plate of the support arm (2) are respectively provided with a second connecting hole (22) for connecting the corresponding connecting plate (12).

4. The tailrace maintenance platform according to claim 3, characterized in that: The upper plate of the support arm (2) is provided with a plurality of third connection holes (23) for connecting the support plate.

5. The tailrace maintenance platform according to claim 2, characterized in that: The center plate (3) has a regular octagonal structure that is compatible with the center frame (1). The center plate (3) has a first grid hole (31) in the middle and a first clearance groove (32) for avoiding the connecting plate (12) and a fourth connecting hole (33) for connecting the skeleton at the edge of the center plate (3).

6. The tailrace maintenance platform according to claim 2, characterized in that: The fan-shaped plate (4) has a second grid hole (41) in the middle and a fifth connecting hole (42) for connecting the frame at the edge of the fan-shaped plate (4). The fan-shaped plate (4) has a second clearance groove (43) for avoiding the connecting plate (12) at the near edge and a third clearance groove (44) for avoiding the hoisting lug (24) and the suspension lug (25) at the far edge.

7. The tailrace maintenance platform according to claim 6, characterized in that: The sector plate (4) is composed of several flat plates connected together, and a wedge-shaped wooden block (45) is provided at the far end of the sector plate (4).

8. The tailrace maintenance platform according to claim 6, characterized in that: At least one sector plate (4) has a reserved notch at its far end, and a door panel (46) is provided at the reserved notch; the door panel (46) is connected to the sector plate (4) by a hinge (47), and a handle (48) is provided on the door panel (46).

9. The tailrace maintenance platform according to claim 1, characterized in that: It also includes a lifting device (6), whose hooks are connected to each lifting lug (24) via ropes (61).

10. The tailrace maintenance platform according to claim 1, characterized in that: It also includes a suspension device (5), which includes a chemical anchor (53), a hook (52) and an adjustable tensioner (51); the chemical anchor (53) is connected to the upper end of the hook (52), and the chemical anchor (53) is provided with a hook (54); the lower end of the adjustable tensioner (51) is connected to the corresponding suspension lug (25), and the upper end of the adjustable tensioner (51) is connected to the lower end of the hook (52).

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