A self-sealing manhole cover disassembly and assembly tool for power station container equipment

Abstract

The present invention belongs to the field of mechanical design technology, and specifically relates to a self-sealing manhole cover disassembly and assembly tool for power station container equipment. The present invention includes a manhole flange mounting seat, a lifting screw, a flip screw, a support tube, a sliding support seat, and a manhole cover mounting seat. The manhole flange mounting seat is fixed on the manhole flange of the high-pressure heater, and the lifting screw is installed in the sleeve of the manhole flange mounting seat. The lifting screw is used to adjust the vertical position of the tool and the manhole cover; the support tube is installed in the horizontal sleeve of the sliding support seat, and the flip screw is installed in the support tube. The bottom ends of the support tube and the flip screw are respectively fixed in the two holes of the manhole cover mounting seat by bolts, and the manhole cover mounting seat is fixed to the manhole cover by screws. The present invention can improve on-site work efficiency and reduce industrial safety risks in operations.

Description

Technical Field

[0001] The invention belongs to the technical field of mechanical design, and in particular relates to a self-sealing manhole cover disassembly and assembly tool for power station container equipment. Background Art

[0002] Each unit of the Phase III of Tianwan Nuclear Power Plant has 4 high-pressure heaters. The manhole cover of the equipment adopts a self-sealing type, and the sealing performance is improved to a certain extent compared with the traditional sealing structure. However, the difficulty of the manhole cover disassembly and assembly process has increased: the manhole cover is elliptical, and the disassembly and assembly process includes four steps: pushing in, vertical flipping, horizontal rotation reversing and pulling out the manhole cover. The vertical flipping and horizontal rotation of the manhole cover are all in the water chamber of the high-pressure heater. The manhole cover has a major axis of 550mm and a minor axis of 470mm, and weighs about 105Kg. In addition, the interior of the water chamber is narrow. Using traditional tools is time-consuming and labor-intensive, and the work efficiency is low. It is impossible to achieve accurate alignment of the manhole cover and the sealing surface. At the same time, there is a risk of the manhole cover hitting the sealing surface of the equipment during operation.

[0003] Based on the above situation, a special tool for disassembling and assembling a self-sealing manhole cover of a container is specially designed and manufactured. The tool is a purely mechanical structure. A mechanical cantilever structure component is installed on the outside of the manhole of a self-sealing container. The tool is connected to the manhole cover during the disassembly and assembly of the manhole cover. The relative rotation and displacement of each component realizes the horizontal movement, flipping, rotation and position adjustment functions of the manhole cover.

[0004] By using this tool, not only can the operation time be reduced and work efficiency be improved, but also the accurate alignment of the manhole cover and the equipment sealing surface can be achieved, thus preventing the manhole cover from scratching the equipment sealing surface and reducing industrial safety risks during operations. Summary of the invention

[0005] The purpose of the present invention is to address the deficiencies in the prior art and provide a self-sealing manhole cover disassembly and assembly tool for power station container equipment. By using the tool on site, on-site work efficiency can be improved and industrial safety risks in operations can be reduced.

[0006] The technical solution adopted by the present invention is:

[0007] A self-sealing manhole cover disassembly and assembly tool for power station container equipment comprises a manhole flange mounting seat, a lifting screw rod, a flip screw rod, a support pipe, a sliding support seat, and a manhole cover mounting seat. The manhole flange mounting seat is fixed on the manhole flange of a high-pressure heater, the lifting screw rod is installed in the sleeve of the manhole flange mounting seat, and the lifting screw rod is used to adjust the vertical position of the tool and the manhole cover; the support pipe is installed in the horizontal sleeve of the sliding support seat, and the flip screw rod is installed in the support pipe, and the bottom ends of the support pipe and the flip screw rod are respectively fixed in two holes of the manhole cover mounting seat by bolts, and the manhole cover mounting seat is fixed to the manhole cover by screws.

[0008] It also includes a lifting screw nut, which is connected to the lifting screw through threads, and the lifting screw nut is fixed on the manhole flange mounting seat.

[0009] It also includes a swing arm, a sleeve on one side of the swing arm cooperates with the lifting screw rod and is sleeved on the outside of the lifting screw rod, the bottom of the sliding support seat is sleeved in the sleeve on the other side of the swing arm, and the swing arm can rotate freely to adjust the horizontal position of the manhole cover.

[0010] It also includes a flip screw nut, which is installed on the top end of the support tube.

[0011] It also includes a sliding screw, a sliding screw nut, and a rotating bracket. The two ends of the sliding screw are respectively connected to the protruding mounting positions on the support tube. The sliding screw and the sliding screw nut are connected by threads. The sliding screw nut is fixed on the rotating bracket. The rotating bracket is sleeved on the outside of the support tube and cooperates with the keyway on the support tube.

[0012] A half is installed at one end of the rotating bracket, and the half cooperates with the flange of the sliding support seat to fix the position of the rotating bracket, and can rotate around the support tube.

[0013] One end of the rotating screw is fixed on the sliding support seat through a rotating screw support seat, and the other end is fixed on the rotating bracket through a rotating screw nut.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] (1) The present invention provides a self-sealing manhole cover disassembly and assembly tool for power station container equipment, which is light in weight, small in size, easy to carry, easy to assemble, and has simple operating steps;

[0016] (2) The present invention provides a self-sealing manhole cover disassembly and assembly tool for power station container equipment, which uses a mounting bracket and a manhole cover connecting seat to connect the tool to the equipment body and the equipment manhole cover, thereby improving the stability and reliability of tool operation and effectively solving the problem that the tool needs to be reliably fixed when in use;

[0017] (3) The present invention provides a self-sealing manhole cover disassembly and assembly tool for power station container equipment, which adopts a T-shaped support and a rotating swing arm combination to simplify the extraction action of the manhole cover. At the same time, the removed manhole cover can be placed on one side of the manhole, solving the storage problem after the cover is removed and effectively saving work time;

[0018] (4) The present invention provides a self-sealing manhole cover disassembly and assembly tool for power station container equipment, which uses a lifting screw to adjust the height of the manhole cover, quickly realizes the centering of the manhole cover, and avoids the problem of the cover easily knocking against the equipment sealing surface during the disassembly and assembly process;

[0019] (5) The present invention provides a self-sealing manhole cover disassembly and assembly tool for power station container equipment, which is assembled by a rotating screw and a flipping screw to effectively realize the horizontal rotation, vertical flipping, and horizontal pushing and pulling of the manhole cover inside the water chamber. The structure is efficient and reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A front view of a self-sealing manhole cover disassembly and assembly tool for power station container equipment provided by the present invention;

[0021] Figure 2 A top view of a self-sealing manhole cover disassembly and assembly tool for power station container equipment provided by the present invention;

[0022] Figure 3 A rotating view of a self-sealing manhole cover disassembly and assembly tool for power station container equipment provided by the present invention;

[0023] Figure 4 A cross-sectional view of a self-sealing manhole cover disassembly and assembly tool for power station container equipment provided by the present invention;

[0024] Figure 5 A rear view of a self-sealing manhole cover disassembly and assembly tool for power station container equipment provided by the present invention;

[0025] In the figure: 1- high-pressure heater manhole flange, 2- manhole cover, 3- manhole flange mounting seat, 4- lifting screw, 5- lifting screw nut, 6- flip screw, 7- flip screw nut, 8- support tube, 9- sliding support seat, 10- manhole cover mounting seat, 11- stud bolt, 12- nut, 13- screw A, 14- swing arm, 15- sliding screw, 16- sliding screw nut, 17- rotating bracket, 18- rotating screw, 19- Haff, 20- screw B, 21- screw C, 22- rotating screw support, 23- rotating screw nut. DETAILED DESCRIPTION

[0026] The following is a further detailed description of a self-sealing manhole cover disassembly and assembly tool for power station container equipment provided by the present invention in conjunction with the accompanying drawings and specific embodiments.

[0027] like Figure 1-5 As shown, the present invention provides a self-sealing manhole cover disassembly and assembly tool for power station container equipment, which can realize the movement, rotation, flipping and position adjustment of the manhole cover, including a manhole flange mounting seat 3, a lifting screw 4, a lifting screw nut 5, a flip screw 6, a flip screw nut 7, a support tube 8, a sliding support seat 9, and a manhole cover mounting seat 10.

[0028] The manhole flange mounting seat 3 is fixed to the manhole flange 1 of the high-pressure heater by stud bolts 11 and nuts 12, the lifting screw 4 is installed in the sleeve of the manhole flange mounting seat 3, the lifting screw nut 5 is connected to the lifting screw 4 by threads, and the lifting screw nut 5 is fixed to the manhole flange mounting seat 3 by screws C21. The lifting screw 4 is used to adjust the vertical position of the tool and the manhole cover plate 2;

[0029] One side sleeve of the swing arm 14 cooperates with the lifting screw rod 4 and is sleeved on the outside of the lifting screw rod 4. The bottom of the sliding support seat 9 is sleeved in the other side sleeve of the swing arm 14. The swing arm 14 can rotate freely to adjust the horizontal position of the manhole cover plate 2.

[0030] The support tube 8 is installed in the horizontal sleeve of the sliding support seat 9, and the flip screw 6 is installed in the support tube 8. The bottom ends of the support tube 8 and the flip screw 6 are respectively fixed in the two holes of the manhole cover mounting seat 10 by bolts, and the manhole cover mounting seat 10 is fixed on the manhole cover 2 by screws; the flip screw nut 7 is installed on the top of the support tube 8, the sliding screw 15 is connected with the sliding screw nut 16 by threads, and the sliding screw nut 16 is fixed on the rotating bracket 17. The rotating bracket 17 is sleeved on the outside of the support tube 8 and matched with the keyway on the support tube 8. The half 19 is sleeved on one end of the rotating bracket 17 and matched with the flange of the sliding support seat 9 by screws B20 to fix the position of the rotating bracket 17 so that it can rotate around the support tube 8. The two ends of the sliding screw 15 are respectively connected to the protruding mounting positions on the support tube 8.

[0031] One end of the rotating screw 18 is fixed to the sliding support seat 9 through a rotating screw support 22 , and the other end is fixed to the rotating bracket 17 through a rotating screw nut 23 .

[0032] The following is an introduction to the on-site use of the disassembly and assembly tool in conjunction with the accompanying drawings and implementation examples:

[0033] [1] Install the fixed mounting bracket, install the remaining parts of the tool, insert the tool into the manhole of the high-pressure heater, install the manhole cover bracket, and connect the tool to the manhole cover;

[0034] [2] Remove the pressing plate and screws that secure the manhole cover;

[0035] [3] Turn the sliding screw rod to push the manhole cover forward a certain distance to separate the manhole cover from the manhole;

[0036] [4] Turn the screw to rotate the manhole cover 90°;

[0037] [5] Turn the turning screw to rotate the manhole cover to a horizontal position;

[0038] [6] Adjust the lifting screw to ensure that the manhole cover is basically aligned with the center of the manhole without interference;

[0039] [7] Turn the sliding screw to move the manhole cover to the manhole port;

[0040] [8] Rotate the swing arm to move the manhole tool and the manhole cover to the opposite side of the manhole, thereby effectively fixing the manhole tool;

[0041] [9] The installation of the manhole cover is the reverse operation of the removal. After the manhole cover enters the manhole and flips to a vertical position, the lifting screw, swing arm, and sliding support seat should cooperate with each other to accurately align the manhole cover with the manhole.

[0042] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the art who, within the technical scope disclosed by the present invention, makes equivalent substitutions or changes based on the technical scheme and inventive concept of the present invention should be covered within the protection scope of the present invention.

Claims

1. A self-sealing manhole cover disassembly and assembly tool for power station container equipment, characterized in that: It includes a manhole flange mounting seat, a lifting screw rod, a flip screw rod, a support tube, a sliding support seat, and a manhole cover mounting seat. The manhole flange mounting seat is fixed on the manhole flange of the high-pressure heater, the lifting screw rod is installed in the sleeve of the manhole flange mounting seat, and the lifting screw rod is used to adjust the vertical position of the tool and the manhole cover plate; the support tube is installed in the horizontal sleeve of the sliding support seat, and the flip screw rod is installed in the support tube. The bottom ends of the support tube and the flip screw rod are respectively fixed to the two holes of the manhole cover mounting seat by bolts, and the manhole cover mounting seat is fixed to the manhole cover plate by screws; it also includes a swing arm, a sleeve on one side of the swing arm cooperates with the lifting screw rod and is sleeved on the outside of the lifting screw rod, the bottom of the sliding support seat is sleeved in the other side sleeve of the swing arm, The arm can rotate freely and is used to adjust the horizontal position of the manhole cover; it also includes a flip screw nut, which is installed on the top of the support tube; it also includes a sliding screw, a sliding screw nut, and a rotating bracket. The two ends of the sliding screw are respectively connected to the protruding mounting positions on the support tube, and the sliding screw and the sliding screw nut are connected by threads. The sliding screw nut is fixed on the rotating bracket, and the rotating bracket is sleeved on the outside of the support tube and cooperates with the keyway on the support tube; a half is installed at one end of the rotating bracket, and the half cooperates with the flange of the sliding support seat to fix the position of the rotating bracket, and can rotate around the support tube; one end of the rotating screw is fixed to the sliding support seat through a rotating screw support, and the other end is fixed to the rotating bracket through a rotating screw nut.

2. A self-sealing manhole cover disassembly and assembly tool for power station container equipment according to claim 1, characterized in that: It also includes a lifting screw nut, which is connected to the lifting screw through threads, and the lifting screw nut is fixed on the manhole flange mounting seat.

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