Large-diameter seat ring with pad flange surface mobile working platform and method

Abstract

A mobile working platform and method for a large-caliber seat ring with a pad flange surface comprises a vehicle body, a driving wheel is mounted on the vehicle body, a working hole is arranged in the middle of the vehicle body, a plurality of brackets are rotatably connected to the bottom surface of the vehicle body, a plurality of limiting wheels are mounted on the brackets, a lifting mechanism is mounted on the vehicle body, and a plurality of electromagnets are mounted on the moving end of the lifting mechanism. The present invention is used to solve the problems that the existing seat ring flange surface processing process is cumbersome and consumes a lot of manpower and material resources, and the processing accuracy and maintenance cycle are difficult to guarantee.

Description

Technical Field

[0001] The invention relates to a mobile working platform and method for a flange surface of a large-caliber seat ring with a cushion block at its opening. Background Art

[0002] The stator frame and seat ring are important parts of the hydro-turbine generator set. After the unit has been running for a long time, the seat ring flange surface will be deformed. If the seat ring flange surface exceeds the standard, the level of a series of components such as the support cover level and thrust bearing level will exceed the standard, which will seriously affect the safe and stable operation of the unit. Therefore, it is necessary to process the seat ring.

[0003] Since the seat ring diameter far exceeds the processable size of ordinary machine tools, it brings many difficulties to the maintenance and inspection operations. The use of traditional processing methods (such as manual processing, special machine tools, etc.) requires the construction of large-area supports, regional processing and inspection, and frequent movement of processing equipment. The process is cumbersome and consumes a lot of manpower and material resources. The processing accuracy and maintenance cycle are difficult to guarantee, which directly affects the installation quality and normal operation of the unit. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a mobile working platform and method for a large-diameter seat ring flange surface with a gasket, so as to solve the problem that the existing seat ring flange surface processing process is cumbersome and consumes a lot of manpower and material resources, and the processing accuracy and maintenance cycle are difficult to guarantee.

[0005] In order to solve the above problems, the technical solution of the present invention is:

[0006] A mobile working platform with a large-diameter seat ring with a flange surface having a gasket includes a vehicle body, a driving wheel is installed on the vehicle body, a working hole is provided in the middle of the vehicle body, a plurality of brackets are rotatably connected to the bottom surface of the vehicle body, a plurality of limiting wheels are installed on the brackets, a lifting mechanism is installed on the vehicle body, and a plurality of electromagnets are installed on the moving end of the lifting mechanism.

[0007] The lifting mechanism includes a plurality of guide rods and a plurality of driving devices mounted on the vehicle body, the guide rods are equipped with guide sleeves, the lifting plate is fixedly connected to each guide sleeve, a lifting hole corresponding to the working hole is opened in the middle of the lifting plate, magnetic holes are opened on both sides of the working hole, an electromagnet is arranged in the magnetic hole, and the electromagnet is fixedly connected to the lifting plate;

[0008] The driving device includes an electric cylinder installed on the vehicle body and an inclined block fixedly connected to the lifting plate, a first guide rail is installed on the inclined surface of the inclined block, a second guide rail is installed on the vehicle body below the first guide rail, a push-pull block is provided between the first guide rail and the second guide rail, the upper and lower end surfaces of the push-pull block are respectively fixedly connected to the sliders assembled on the first guide rail and the second guide rail, and the electric cylinder piston rod is connected to the push-pull block.

[0009] The working hole and the lifting hole are connected through an accordion protective cover.

[0010] A guide strip is fixedly connected to the bottom surface of the vehicle body.

[0011] Brush strips or flexible scraping strips are installed on the vehicle body at both sides of the working hole.

[0012] A method of moving the working platform on the flange surface with a large-diameter seat ring and a gasket. After the mobile working platform is hoisted onto the flange surface, the driving wheel first drives the mobile working platform to the designated position, allowing the flange surface to be constructed into the working hole, and then the electric cylinder drives the lifting plate downward until the electromagnet falls on the flange surface. Finally, the electromagnet is energized to magnetically fix the mobile working platform, and the staff uses the mobile working platform to construct the flange surface in the working hole.

[0013] The beneficial effects of the present invention are as follows: the driving wheel drives the mobile working platform to move on the flange surface, and the limiting wheel pair guides it to move, ensuring that the mobile working platform moves safely and stably on the flange surface, and then the lifting mechanism drives multiple electromagnets to fall on the flange surface and stably adsorb and fix them to the flange surface, so that the mobile working platform can be firmly fixed on the flange surface, providing a safe, reliable and stable mobile working platform for maintenance and inspection equipment, greatly reducing the consumption of manpower and material resources, while ensuring the processing accuracy, making it difficult to guarantee the maintenance and inspection cycle. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The present invention will be further described below in conjunction with the accompanying drawings:

[0015] Figure 1 is a schematic diagram of the three-dimensional structure of the present invention,

[0016] Figure 2 is a schematic diagram of the three-dimensional structure of the present invention,

[0017] Figure 3 is a schematic diagram of the three-dimensional structure of the present invention,

[0018] Figure 4 This is a schematic diagram of the three-dimensional structure of the present invention, in which the lifting plate is hidden.

[0019] Figure 5 It is a schematic diagram of the structure of the present invention when equipped with a milling machine.

[0020] In the figure: vehicle body 100, driving operation hole 101, brush bar 102, lifting mechanism 200, lifting plate 201, guide sleeve 202, guide rod 203, first guide rail 204, second guide rail 205, push-pull block 206, electric cylinder 207, inclined block 208, flange surface 300, cushion block 301, moving wheel 400, guide bar 500, limiting wheel 600, bracket 601, accordion protective cover 700, electromagnet 800, milling machine 900. DETAILED DESCRIPTION

[0021] like Figures 1 to 5 As shown, a mobile working platform with a flange surface of a large-diameter seat ring with a pad block comprises a vehicle body 100, a driving wheel 400 is installed on the vehicle body 100, a working hole 101 is provided in the middle of the vehicle body 100, a plurality of brackets 601 are rotatably connected to the bottom surface of the vehicle body 100 through a rotating shaft, a plurality of limiting wheels 600 are installed on the brackets 601, a lifting mechanism 200 is installed on the vehicle body 100, a plurality of electromagnets 800 are installed on the moving end of the lifting mechanism 200, and the limiting wheel 600 can rotate so as to make it fully contact with the side wall of the seat ring to form an inner guide.

[0022] When the present invention is in use, after the mobile working platform is hoisted onto the flange surface of the seat ring, the limiting wheel 600 is allowed to abut against the side wall of the seat ring, and the mobile working platform is guided by the limiting wheel 600. The driving wheel 400 first drives the mobile working platform to move to the specified position, allowing the flange surface to be processed to enter the working hole 101, and then the electric cylinder drives the lifting plate downward until the electromagnet 800 falls on the flange surface. Finally, the electromagnet 800 is energized to magnetically fix the mobile working platform, and then the milling machine is hoisted onto the mobile working platform and installed and fixed. The flange surface in the working hole 101 is processed by the milling machine 900. After the processing is completed, the electromagnet 800 loses power, and at the same time the lifting mechanism 200 drives upward to leave the flange surface, and the driving wheel 400 drives the mobile working platform to move to the next processing position on the flange surface.

[0023] It should also be noted that the above-mentioned implementation scheme of the mobile work platform equipped with a milling machine is an example made to make it easier for technical personnel to understand the present invention, and does not mean that the carrying function of the mobile work platform is limited to the milling machine. It can also carry drilling machines, grinders and laser detection equipment, etc.

[0024] The lifting mechanism 200 includes a plurality of guide rods 203 and a plurality of driving devices mounted on the vehicle body 100. The guide rods 203 are equipped with guide sleeves 202. The lifting plate 201 is fixedly connected to each guide sleeve 202. A lifting hole corresponding to the working hole 101 is opened in the middle of the lifting plate 201. Magnetic holes are opened on both sides of the working hole 101. Electromagnets 800 are arranged in the magnetic holes. The electromagnets 800 are fixedly connected to the lifting plate.

[0025] The driving device includes an electric cylinder 207 installed on the vehicle body 100 and an inclined block 208 fixedly connected to the lifting plate 201, a first guide rail 204 is installed on the inclined surface of the inclined block 208, a second guide rail 205 is installed on the vehicle body 100 below the first guide rail 204, a push-pull block 206 is provided between the first guide rail 204 and the second guide rail 205, the upper and lower end surfaces of the push-pull block 206 are respectively fixedly connected to the sliders assembled on the first guide rail 204 and the second guide rail 205, and the piston rod of the electric cylinder 207 is connected to the push-pull block 206.

[0026] The working process of the lifting mechanism 200 is: the electric cylinder 207 drives the push-pull block 206 to move. During the movement of the push-pull block 206, the inclined surface will be used to push the lifting plate up and down to drive the electromagnet 800 to move up and down. The advantages of this lifting mechanism 200 are: first, it can ensure that the lifting plate and the vehicle body 100 are flat, and no transmission parts are exposed on the vehicle body 100 and the lifting plate, which is convenient for carrying construction equipment. Secondly, the lifting is stable and reliable, the size is small, and it has good carrying capacity.

[0027] The working hole 101 and the lifting hole are connected by an accordion protection cover 700. The accordion protection cover 700 can prevent iron filings generated by machining the flange surface from entering the vehicle body 100.

[0028] A guide bar 500 is fixedly connected to the bottom surface of the vehicle body 100. The guide bar 500 abuts against the seat ring pad to limit and guide the mobile working platform.

[0029] Brush strips 102 or flexible scrapers are installed on the vehicle body 100 on both sides of the working hole 101. The flexible scraper strips, such as rubber strips, are used to clean up debris on the flange surface during the movement of the mobile working platform.

[0030] The above embodiments are only preferred technical solutions of the present invention and should not be regarded as limiting the present invention. The protection scope of the present invention shall be the technical solutions recorded in the claims, including equivalent replacement solutions of the technical features in the technical solutions recorded in the claims. That is, equivalent replacement improvements within this scope are also within the protection scope of the present invention.

Claims

1. A mobile working platform with a large-diameter seat ring and flange surface with a gasket, characterized by: The vehicle comprises a vehicle body (100), a driving wheel (400) is mounted on the vehicle body (100), an operation hole (101) is provided in the middle of the vehicle body (100), a plurality of brackets (601) are rotatably connected to the bottom surface of the vehicle body (100), a plurality of limiting wheels (600) are mounted on the brackets (601), a lifting mechanism (200) is mounted on the vehicle body (100), and a plurality of electromagnets (800) are mounted on the moving end of the lifting mechanism (200); the lifting mechanism (200) comprises a plurality of guide rods (203) and a plurality of driving devices mounted on the vehicle body (100), the guide rods (203) being equipped with guide sleeves (202), the lifting plate (201) being fixedly connected to each guide sleeve (202), a lifting hole corresponding to the working hole (101) being opened in the middle of the lifting plate, magnetic holes being opened on both sides of the working hole (101), an electromagnet (800) being arranged in the magnetic hole, and the electromagnet (800) being fixedly connected to the lifting plate; The driving device comprises an electric cylinder (207) mounted on a vehicle body (100) and an inclined block (208) fixedly connected to a lifting plate; a first guide rail (204) is mounted on an inclined surface of the inclined block (208); a second guide rail (205) is mounted on the vehicle body (100) below the first guide rail (204); a push-pull block (206) is provided between the first guide rail (204) and the second guide rail (205); upper and lower end surfaces of the push-pull block (206) are respectively fixedly connected to sliders mounted on the first guide rail (204) and the second guide rail (205); and a piston rod of the electric cylinder (207) is connected to the push-pull block (206).

2. The large-diameter seat ring with a pad flange surface mobile working platform according to claim 1 is characterized by: The working hole (101) and the lifting hole are connected via an accordion protective cover (700).

3. The large-diameter seat ring with pad flange surface mobile working platform according to claim 1 or 2, characterized in that: A guide strip (500) is fixedly connected to the bottom surface of the vehicle body (100).

4. The large-diameter seat ring with pad flange surface mobile working platform according to claim 1 or 2, characterized in that: Brush strips (102) or flexible scraper strips are installed on the vehicle body (100) on both sides of the working hole (101).

5. A method for moving a working platform using the large-diameter seat ring with a pad flange surface as claimed in claim 1 or 2, characterized in that: After the mobile working platform is hoisted onto the flange surface, the driving wheel (400) first drives the mobile working platform to move to a designated position, allowing the flange surface to be constructed to enter the working hole (101), and then the electric cylinder drives the lifting plate to descend to the electromagnet (800) and fall onto the flange surface. Finally, the electromagnet (800) is energized to magnetically fix the mobile working platform, and the staff uses the working platform to construct the flange surface in the working hole (101).

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