Quick mounting platform for overhauling runner of water turbine

Abstract

A fast assembly platform for overhauling a turbine runner comprises a plurality of groups of assembly platforms which are arranged to be a stepped sector annular platform, the stepped sector annular platform comprises a stepped frame, a working table top is installed on the top of each step of the stepped frame, trundles are arranged at the four corners of the bottom of the stepped frame, and a connecting mechanism is installed on the side face of the stepped frame. The plurality of groups of assembling platforms are used for connecting the plurality of groups of assembling platforms, and a safety fence is arranged on the periphery of the plurality of groups of assembling platforms; the ladder frame comprises a plurality of sets of stand columns, one set comprises four stand columns, the stand columns are sleeved with a plurality of universal connecting joints, and transverse rods and side rods are fixedly connected through the universal connecting joints. The ladder sector annular platform is convenient for personnel to go up and down and place tools; the stepped sector annular platform is connected and assembled through the universal connecting joints, rapid assembly and disassembly are convenient, and stability and safety are high. The trundles are arranged, so that the platform is convenient to move; and due to the arrangement of the connecting mechanisms, the splicing platforms can be quickly assembled and expanded conveniently so as to meet the requirements of different working spaces and environments.

Description

Technical Field

[0001] The utility model relates to the technical field of water turbine maintenance, in particular to a quick-installation platform for maintenance of a water turbine runner. Background Art

[0002] During the maintenance of a hydropower station, the inspection and treatment of the runner is a routine and important item of the unit maintenance. The usual method of runner maintenance is to build a tailwater platform in the runner room, and then build a temporary scaffolding above the tailwater platform, and the operators work on the scaffolding. The efficiency of temporary scaffolding construction is very low. A large number of steel pipes need to be transported from other places to the runner room hole, and then they need to be erected one by one using fasteners. A large number of bamboo springboards need to be laid on the top, which is time-consuming and labor-intensive. This temporary scaffolding cannot be moved. When building it, the entire runner room needs to be filled up, which is also a big test for the carrying capacity of the tailwater platform. The bottom and top of the water side of the runner blades are the key inspection areas, but due to the high height of the blades, a single-layer platform cannot meet the needs of a comprehensive inspection, and the difficulty and workload of building a multi-layer platform are greatly increased. After the runner is overhauled, the platform must be removed, and disassembly and transportation are also a major difficulty.

[0003] In response to the deficiencies in the prior art, this patent designs a quick-install platform for turbine runner maintenance, which improves the efficiency of platform construction while increasing safety and reuse rate and making it easier to move. Summary of the invention

[0004] The technical problem to be solved by the utility model is to provide a quick-install platform for repairing a turbine runner, which solves the problem that the prior art uses a temporary scaffolding as a repair platform, which has low construction efficiency, is time-consuming and labor-intensive, and has poor safety, poor adaptability, and cannot be moved or reused.

[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is: a quick-assembly platform for turbine runner maintenance, including several groups of assembly platforms, each group of assembly platforms is arranged as a step fan annular platform, the step fan annular platform includes a step frame, a work surface is installed on the top of each step of the step frame, casters are arranged at the four corners of the bottom of the step frame, and a connecting mechanism is installed on the side of the ladder frame for connecting each group of assembly platforms, and a safety fence is arranged around the periphery of the several groups of assembly platforms.

[0006] In a preferred embodiment, the ladder frame includes several groups of columns, one group includes four columns, and several universal joints are mounted on the columns, and cross bars and side bars are connected and fixed by the universal joints. Several layers of cross bars and side bars are installed and fixed on one group of columns.

[0007] In a preferred solution, the universal joint is arranged in a four-petal petal shape, a main hole is arranged in the center, a column is mounted in the main hole, and connecting holes are arranged on the petals, through which the cross bar and the side bar are connected and fixed.

[0008] In the preferred solution, the cross bar includes a main bar, connecting plates are installed at both ends of the main bar, mounting holes are set on the connecting plates, the connecting plates at both ends are arranged in groups, a group of connecting plates clamps the petals of the universal joint, and the columns and the cross bar are connected and fixed together by pins through the mounting holes and the connecting holes.

[0009] In a preferred solution, the structure of the side bar is the same as that of the cross bar, and the installation method of the side bar to the column is also the same as that of the cross bar.

[0010] In the preferred solution, a work surface is installed on the top of each step of the ladder frame, and notches are provided at the four corners of the work surface. The notches are clamped on a group of four columns, and the bottom surface rests on the universal joint installed on the columns. A number of clamping plates are also fixed on the side of the ladder frame, and the work surface is clamped between the clamping plates to be further fixed.

[0011] In a preferred solution, casters are installed at the bottom of the four columns at the four corners of the bottom of the ladder frame. The casters are universal wheels and are provided with brake devices.

[0012] In the preferred solution, a connecting mechanism is installed on the column on the side of the step frame. The connecting mechanism is a cross universal buckle, which includes a group of fasteners. The sub-fasteners include a lower fastener and an upper fastener. The small end of the lower fastener is connected to the living bolt, and the large end is connected to the upper fastener provided with a notch and a thrust surface. The group of fasteners are connected by riveting and can rotate at any angle.

[0013] In a preferred embodiment, a group of fasteners of the cross universal buckle of the connecting mechanism is mounted on a column on the side of the ladder frame of one group of assembly platforms, and the other is mounted on a column on the side of the ladder frame of another group of assembly platforms adjacent to the group of assembly platforms. Several cross universal buckles are installed between the groups of assembly platforms to connect the groups of assembly platforms in series to form an overall quick-assembly platform.

[0014] In a preferred solution, a safety fence is installed on the side of the working platform outside the several groups of assembly platforms. The safety fence includes several vertical poles, and handrails are provided on the top of the vertical poles. The vertical poles are inserted and fixed in the columns of the ladder frame.

[0015] In the preferred solution, the quick-assembly platform is formed by connecting several identical assembly platforms, which are connected to each other by a cross universal buckle of a connecting mechanism. The angle of the step fan annular platform is 30 to 40 degrees, and the assembly platforms can be increased or decreased according to maintenance needs to expand or shrink to the required size.

[0016] The utility model provides a quick-installation platform for repairing a turbine runner, which has the following beneficial effects:

[0017] 1. The utility model solves the problems of the prior art that temporary scaffolding is used as a maintenance platform, which has low construction efficiency, is time-consuming and labor-intensive, and has poor safety, poor adaptability, and cannot be moved and reused. It has the characteristics of simple construction and convenient disassembly and transportation, which greatly saves manpower and material resources;

[0018] 2. The utility model realizes the rapid construction and dismantling of the quick-installation platform through modular design, greatly shortening the pre-maintenance preparation time;

[0019] 3. The design of several layers of work surfaces in this utility model can meet the needs of maintenance of different areas of the runner;

[0020] 4. The setting of several universal joints of the utility model realizes the rapid installation and construction of the ladder frame, and is convenient for adjusting the angle to be suitable for the installation of ladder frames at various angles, with good interchangeability and strong applicability;

[0021] 5. The setting of the cross universal buckle of the connection mechanism of the utility model realizes the rapid connection and disassembly between the assembly platform groups, thereby further improving the efficiency of the construction and disassembly of the quick assembly platform;

[0022] 6. The setting of the casters of the utility model realizes the movement of the assembly platform and the quick-assembly platform, facilitates the movement during the construction and maintenance work, and improves the work efficiency. At the same time, the setting of the foot brake fixes the platform and improves the safety of the platform;

[0023] 7. The setting of the stepped fan annular structure of the utility model is convenient for the maintenance of each area of ​​the turbine runner, and is conducive to the subsequent expansion and reduction of the assembly platform according to the maintenance scope and space requirements to meet the maintenance requirements;

[0024] 8. The setting of the safety fence of the utility model protects the working safety of the operators and improves the safety and reliability of the quick installation platform. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The utility model is further described below in conjunction with the accompanying drawings and implementation examples:

[0026] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0027] Figure 2 This is a schematic diagram of the structure of a single assembly platform of the utility model;

[0028] Figure 3 It is a structural schematic diagram of the universal joint of the utility model;

[0029] Figure 4 It is a structural schematic diagram of the crossbar of the utility model;

[0030] Figure 5 It is a structural schematic diagram of the connection mechanism of the utility model;

[0031] In the figure: a ladder frame 1, a work surface 2, casters 3, a connecting mechanism 4, a safety fence 5, a column 11, a universal joint 12, a cross bar 13, a side bar 14, a clamping plate 15, a vertical bar 51, a handrail 52, a main bar 131, and a connecting plate 132. DETAILED DESCRIPTION

[0032] The technical solution of the utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0033] Embodiment 1:

[0034] like Figures 1 to 5 As shown, a quick-assembly platform for repairing a turbine runner comprises a plurality of assembly platforms, each assembly platform being arranged as a step fan annular platform, the step fan annular platform comprising a step frame 1, a work surface 2 being installed on the top of each step of the step frame 1, casters 3 being installed on the four corners of the bottom of the step frame 1, a connecting mechanism 4 being installed on the side of the step frame 1 for connecting each assembly platform group, and a safety fence 5 being arranged around the periphery of the plurality of assembly platforms.

[0035] In this embodiment, the ladder frame 1 includes several groups of columns 11, one group includes four columns 11, and several universal joints 12 are mounted on the columns 11. Cross bars 13 and side bars 14 are connected and fixed through the universal joints 12. Several layers of cross bars 13 and side bars 14 are installed and fixed on one group of columns 11.

[0036] Furthermore, the universal joint 12 is configured as a four-petal petal shape, with a main hole in the center, the column 11 is mounted in the main hole, and connecting holes are provided on the petals, through which the fixed cross bar 13 and the side bar 14 are connected.

[0037] Furthermore, the cross bar 13 includes a main rod 131, and connecting plates 132 are installed at both ends of the main rod 131. The connecting plates 132 are provided with mounting holes. The connecting plates 132 at both ends are arranged in groups. A group of connecting plates 132 clamps the petals of the universal joint 12, and the column 11 and the cross bar 13 are connected and fixed together by pins through the mounting holes and the connecting holes.

[0038] Furthermore, the structure of the side bar 14 is the same as that of the cross bar 13 , and the installation method of the side bar 14 with the column 11 is also the same as that of the cross bar 13 .

[0039] Furthermore, a work surface 2 is installed at the top of each step of the ladder frame 1, and notches are set at the four corners of the work surface 2. The notches are clamped on a group of four columns 11, and the bottom surface rests on the universal joint 12 installed on the column 11. A number of clamping plates 15 are also fixed on the side of the ladder frame 1, and the work surface 2 is clamped between the clamping plates 15 to be further fixed.

[0040] Furthermore, casters 3 are installed at the bottom of the four columns 11 at the four corners of the bottom of the ladder frame 1. The casters 3 are universal wheels and are provided with brake devices.

[0041] Furthermore, a connecting mechanism 4 is installed on the column 11 on the side of the step frame 1. The connecting mechanism 4 is a cross universal buckle, including a group of fasteners, and the sub-fasteners include a lower fastener and an upper fastener. The small end of the lower fastener is connected to the living bolt, and the large end is connected to the upper fastener provided with a notch and a thrust surface. The group of fasteners are connected by riveting and can be rotated at any angle.

[0042] Furthermore, a group of fasteners of the cross universal buckle of the connecting mechanism 4 is mounted on a column 11 on the side of the ladder frame 1 of one group of assembling platforms, and the other is mounted on a column 11 on the side of the ladder frame 1 of another group of assembling platforms adjacent to the group of assembling platforms. Several cross universal buckles are installed between the groups of assembling platforms to connect the groups of assembling platforms in series to form an overall quick-assembly platform.

[0043] Furthermore, a safety fence 5 is installed on the side of the working platform outside the several groups of assembly platforms. The safety fence 5 includes several vertical poles 51. The top of the vertical poles 51 is provided with handrails 52. The vertical poles 51 are inserted and fixed in the columns 11 of the ladder frame 1.

[0044] Furthermore, the quick-install platform is formed by connecting several identical assembly platforms, which are connected to each other by 4 cross universal buckles of the connecting mechanism. The angle of the step fan annular platform is 30~40 degrees. The assembly platform can be increased or decreased according to maintenance needs to expand or reduce to the required size.

[0045] In specific use, when repairing the turbine runner, a tailwater platform is first built on the tailwater cone, and then a runner repair platform is built above the tailwater platform. The runner repair platform is composed of several groups of assembly platforms. First, the parts of each group of assembly platforms are transported to the tailwater platform, and several groups of assembly platforms are built respectively, and casters 3 are installed, and a work surface 2 is laid. After each group of assembly platforms is built, a connecting mechanism 4 is used to connect them into a whole with a cross universal buckle, and a safety fence 5 is inserted into the three sides of the platform. The operating personnel check the runner on the working platform, and the personnel below cooperate with the mobile platform to complete the inspection of the entire runner.

[0046] Embodiment 2:

[0047] In another preferred embodiment, based on the above embodiment 1, Figure 2 As shown, when the maintenance scope and maintenance workload are small and the operating space is narrow, the 4 cross universal buckles of the connecting mechanism can be disassembled to reduce the number of assembly platforms to meet the requirements of turbine runner maintenance.

[0048] Embodiment 3:

[0049] In another preferred embodiment, based on the above-mentioned embodiment 1, when the maintenance scope is large and the maintenance workload is large, the assembly platform can continue to be assembled and connected to the originally built platform through the connecting mechanism 4 cross universal buckles to meet the requirements of turbine runner maintenance.

[0050] Embodiment 4:

[0051] In another preferred embodiment, based on any of the above embodiments, when the load-bearing requirement is high, casters 3 are installed under the columns 11 to increase the load-bearing capacity of the quick-installation platform while increasing its stability, thereby further enhancing the safety and reliability of the quick-installation platform.

[0052] In the preferred scheme, the ladder frame 1 includes several groups of columns 11, one group includes four columns 11, and several universal joints 12 are mounted on the columns 11. Cross bars 13 and side bars 14 are connected and fixed through the universal joints 12. Several layers of cross bars 13 and side bars 14 are installed and fixed on one group of columns 11; the above arrangement enables the structure of the ladder frame 1 to be realized while ensuring the stability of the structure of the ladder frame 1, and is also conducive to the subsequent rapid installation, construction, disassembly and transportation of the ladder frame 1, thereby improving the construction and disassembly efficiency of the quick-installation platform.

[0053] In the preferred embodiment, the universal joint 12 is configured as a four-petal petal shape, with a main hole in the center, the column 11 is mounted in the main hole, and connecting holes are provided on the petals, through which the cross bar 13 and the side bar 14 are connected and fixed; the above configuration realizes the connection between the column 11 and the cross bar 13 and the side bar 14, while being conducive to the rapid installation, construction, disassembly and transportation of the ladder frame 1, and is convenient for adjusting the angle and direction, thereby realizing multi-angle and multi-directional connection.

[0054] In the preferred solution, the cross bar 13 includes a main rod 131, and connecting plates 132 are installed at both ends of the main rod 131. The connecting plates 132 are provided with mounting holes. The connecting plates 132 at both ends are arranged in groups. One group of connecting plates 132 clamps the petals of the universal joint 12, and the columns 11 and the cross bar 13 are connected and fixed together by pins through the mounting holes and the connecting holes. The above arrangement enables the connection between the columns 11 and the cross bar 13 to be realized, and is convenient and quick to install and disassemble.

[0055] In the preferred solution, the structure of the side rod 14 is the same as that of the cross rod 13, and the installation method with the column 11 is also the same as that of the cross rod 13; the above arrangement enables the connection between the column 11 and the side rod 14 to be realized, and is convenient for installation and disassembly.

[0056] In the preferred solution, a work surface 2 is installed on the top of each step of the step frame 1, and the four corners of the work surface 2 are provided with notches, which are clamped on a group of four columns 11, and the bottom surface is placed on the universal joint 12 installed on the column 11. A plurality of clamping plates 15 are also fixed on the side of the step frame 1, and the work surface 2 is clamped between the clamping plates 15 to be further fixed; the above arrangement enables the step frame 1 and the work surface 2 to be installed as one, and fixed firmly, ensuring the safety of the operators, and conveniently placing the maintenance tools; the design of several layers of work surfaces meets the needs of maintenance of different areas of the turbine runner;

[0057] In the preferred solution, casters 3 are installed at the bottom of the four columns 11 at the four corners of the bottom of the ladder frame 1. The casters 3 are universal wheels and are equipped with a brake device. The above arrangement enables the movement and fixation of the step fan annular platform, which is convenient for movement during maintenance and is conducive to rapid installation, construction, disassembly and transportation.

[0058] In the preferred scheme, a connecting mechanism 4 is installed on the column 11 on the side of the ladder frame 1. The connecting mechanism 4 is a cross universal buckle, including a group of fasteners, and the sub-fasteners include a lower fastener and an upper fastener. The small end of the lower fastener is connected to the living bolt, and the large end is connected to the upper fastener provided with a notch and a thrust surface. The group of fasteners are connected by riveting and can be rotated at any angle. The above arrangement enables the quick assembly and disassembly of the quick assembly platform to be realized, while improving the efficiency of building and disassembling the quick assembly platform.

[0059] In the preferred solution, a group of fasteners of the cross universal buckle of the connecting mechanism 4 is mounted on a column 11 on the side of the ladder frame 1 of one group of assembling platforms, and the other is mounted on a column 11 on the side of the ladder frame 1 of another group of assembling platforms adjacent to the group of assembling platforms. Several cross universal buckles are installed between the groups of assembling platforms to connect the groups of assembling platforms in series to form an integral quick-assembly platform. The above arrangement enables the connection and disassembly between the quick-assembly platform groups, and at the same time facilitates construction and disassembly, thereby improving work efficiency.

[0060] In the preferred solution, a safety fence 5 is installed on the side of the working platform outside the several groups of assembly platforms. The safety fence 5 includes several vertical poles 51. The top of the vertical poles 51 is provided with handrails 52. The vertical poles 51 are inserted and fixed in the columns 11 of the ladder frame 1. The above arrangement protects the safety of the operators, thereby further improving the safety and reliability of the platform.

[0061] In the preferred solution, the quick-install platform is formed by connecting a number of identical assembly platforms, which are connected to each other by 4 cross universal buckles of the connecting mechanism. The angle of the step fan annular platform is 30 to 40 degrees. The assembly platform can be increased or decreased according to maintenance needs to expand or shrink to the required size; the above settings are conducive to the expansion and reduction of the assembly platform to meet the needs of different workspaces and environments, thereby further enhancing the wide application range of the quick-install platform.

[0062] In summary, the utility model provides a quick-assembly platform for overhauling a water turbine runner. The prior art uses temporary scaffolding as the overhaul platform, which has low construction efficiency, is time-consuming and labor-intensive, and has poor safety, poor adaptability, and cannot be moved or reused. The utility model has the characteristics of simple construction, convenient disassembly and transportation, and greatly saves manpower and material resources; through modular design, the quick-assembly platform can be quickly constructed and dismantled, greatly shortening the pre-maintenance preparation time; through the arrangement of several layers of work surfaces, the needs of overhauling different areas of the runner can be met; through the arrangement of several universal joints, the ladder frame can be quickly installed and constructed, and the angle can be easily adjusted to be suitable for the installation of ladder frames at various angles, with good interchangeability and strong applicability; through the arrangement of the cross universal buckle of the connecting mechanism, the assembly platform groups can be quickly connected and disassembled, thereby further The efficiency of erecting and disassembling the quick-assembly platform is further improved; the movement of the assembly platform and the quick-assembly platform is realized through the setting of casters, which is convenient for movement during the construction and maintenance work and improves work efficiency. At the same time, the setting of the foot brake fixes the platform and improves the safety of the platform; the setting of the stepped fan ring structure facilitates the maintenance of various areas of the turbine runner, and is conducive to the subsequent expansion and reduction of the assembly platform according to the maintenance scope and space requirements to meet the maintenance requirements; the setting of the safety fence protects the operating safety of the operators and improves the safety and reliability of the quick-assembly platform; the utility model has exquisite design, simple structure, good practicality, strong bearing capacity, wide application range, high practical application value, and has been widely promoted in the field of turbine runner maintenance, and can also be widely used in other technical fields that require the use of scaffolding.

Claims

1. A quick-install platform for the inspection and maintenance of a turbine runner. Features: The invention comprises a plurality of assembly platforms, each assembly platform is configured as a step fan annular platform, the step fan annular platform comprises a step frame (1), a work surface (2) is installed on the top of each step of the step frame (1), casters (3) are installed at the four corners of the bottom of the step frame (1), a connecting mechanism (4) is installed on the side of the step frame (1) for connecting each assembly platform, and a safety fence (5) is arranged around the periphery of the plurality of assembly platforms.

2. A quick-installation platform for repairing a turbine runner according to claim 1, Features: The ladder frame (1) comprises a plurality of groups of columns (11), wherein one group comprises four columns (11), a plurality of universal joints (12) are mounted on the columns (11), and cross bars (13) and side bars (14) are connected and fixed via the universal joints (12), and a plurality of layers of cross bars (13) and side bars (14) are mounted and fixed on one group of columns (11).

3. A quick-installation platform for repairing a turbine runner according to claim 2, Features: The universal joint (12) is configured as a four-petal petal shape, with a main hole provided at the center, a column (11) being sleeved in the main hole, and connecting holes being provided on the petals, through which the fixed crossbar (13) and the sidebar (14) are connected.

4. A quick-installation platform for repairing a turbine runner according to claim 3, Features: The crossbar (13) comprises a main rod (131), and connecting plates (132) are installed at both ends of the main rod (131). The connecting plates (132) are provided with mounting holes. The connecting plates (132) at both ends are arranged in groups. A group of connecting plates (132) clamps the petals of the universal joint (12). The upright column (11) and the crossbar (13) are connected and fixed together by means of a latch through the mounting holes and the connecting holes.

5. A quick-installation platform for repairing a turbine runner according to claim 4, Features: The structure of the side bar (14) is the same as that of the cross bar (13), and the installation method of the side bar (14) with the column (11) is also the same as that of the cross bar (13).

6. A quick-installation platform for repairing a turbine runner according to claim 2, Features: A work surface (2) is installed at the top of each step of the step frame (1). The work surface (2) is provided with notches at four corners. The notches are clamped on a group of four columns (11). The bottom surface rests on a universal joint (12) installed on the columns (11). A plurality of clamping plates (15) are also fixed on the side of the step frame (1). The work surface (2) is clamped between the clamping plates (15) to be further fixed.

7. A quick-installation platform for repairing a turbine runner according to claim 2, Features: The four columns (11) at the four corners of the bottom of the ladder frame (1) are provided with casters (3) at the bottom, and the casters (3) are universal wheels and are provided with brake devices.

8. A quick-installation platform for repairing a turbine runner according to claim 2, Features: A connecting mechanism (4) is installed on the column (11) on the side of the step frame (1). The connecting mechanism (4) is a cross universal buckle, including a group of fasteners, the sub-fasteners include a lower fastener and an upper fastener, the small end of the lower fastener is connected to a movable bolt, and the large end is connected to an upper fastener provided with a notch and a thrust surface. The group of fasteners are connected by rolling rivets and can rotate at any angle.

9. A quick-installation platform for repairing a turbine runner according to claim 8, Features: The connecting mechanism (4) comprises a group of fasteners of a cross universal buckle, one of which is mounted on a column (11) on the side of a step frame (1) of one group of assembling platforms, and the other is mounted on a column (11) on the side of a step frame (1) of another group of assembling platforms adjacent to the group of assembling platforms. A plurality of cross universal buckles are installed between the groups of assembling platforms to connect the groups of assembling platforms in series to form an integral quick-assembly platform.

10. A quick-installation platform for repairing a turbine runner according to claim 2, Features: A safety fence (5) is installed on the side of the working platform outside the plurality of assembly platforms. The safety fence (5) comprises a plurality of uprights (51). The tops of the uprights (51) are provided with handrails (52). The uprights (51) are inserted and fixed in uprights (11) of the ladder frame (1).

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