Manhole cover davit mounting structure

Abstract

The utility model discloses a manhole cover davit mounting structure which comprises a pressure vessel body and a manhole cover, the manhole cover is fixed at the top of the pressure vessel body through bolts, two sides of the outer wall of the top of the manhole cover are fixedly connected with two lifting lugs, a bayonet lock is clamped between the two lifting lugs, the outer wall of the bayonet lock is fixedly connected with a hanging ring, and the hanging ring is fixedly connected with the pressure vessel body. The top end of the lifting ring is sleeved with a fastening nut in a threaded mode, the lifting ring is sleeved with reinforcing rib plates, a first lifting column is fixedly connected between the two reinforcing rib plates, one side of the first lifting column is fixedly connected with a second lifting column, a sealing gasket is arranged between the pressure vessel body and the manhole cover, and the top of the manhole cover is fixedly connected with a center connecting pipe. The first davit is of a C-shaped structure. According to the utility model, the two lifting lugs supported by the lifting points are uniformly arranged on the two sides of the manhole cover, and then the lifting columns are fixedly connected with the flat cover through the reinforcing rib plates, so that a stable lifting support structure is formed.

Description

Technical Field

[0001] This utility model relates to the field of manhole cover installation technology, and in particular to a manhole cover hanging column installation structure. Background Technology

[0002] To facilitate personnel entering the pressure vessel for installation, maintenance, and cleaning, manholes are typically provided on the shell. These manhole covers are used to open and close the manholes, allowing personnel to enter and exit.

[0003] Currently, some pressure vessel manhole covers have central connecting pipes, which prevents the manhole cover lifting support point from being located in the center, thus affecting the installation of the lifting support and consequently the stability of the hoisting. Utility Model Content

[0004] The purpose of this utility model is to solve the problem that some existing pressure vessels have manhole covers with central connecting pipes, which prevents the support point of the manhole cover lifting column from being located in the center, thus affecting the installation of the lifting column and the stability of the hoisting. Therefore, a manhole cover lifting column installation structure is proposed.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A manhole cover lifting column installation structure includes a pressure vessel body and a manhole cover. The manhole cover is fixed to the top of the pressure vessel body by bolts. Two lifting lugs are fixedly connected to both sides of the outer wall of the top of the manhole cover. A locking pin is engaged between the two lifting lugs. A lifting ring is fixedly connected to the outer wall of the locking pin. A fastening nut is threaded onto the top of the lifting ring. A reinforcing rib plate is sleeved on the lifting ring. A first lifting column is fixedly connected between the two reinforcing rib plates. A second lifting column is fixedly connected to one side of the first lifting column.

[0007] Furthermore, a sealing gasket is provided between the pressure vessel body and the manhole cover.

[0008] Furthermore, a central connecting pipe is fixedly connected to the top of the manhole cover.

[0009] Furthermore, the first hanging column has a C-shaped structure.

[0010] Furthermore, the second hanging column has an arc-shaped structure.

[0011] Furthermore, two support plates are fixedly connected to one side of the pressure vessel body, and the bottom end of the second lifting column passes through the support plates.

[0012] The beneficial effects of this utility model are as follows:

[0013] 1. Two lifting lugs are evenly arranged on both sides of the manhole cover for support. Then, the lifting column is fixedly connected to the flat cover through reinforcing ribs to form a stable lifting support structure.

[0014] 2. The height of the hanging column and the position of the hanging point are adjustable to adapt to different heat exchanger models and usage scenarios.

[0015] 3. By designing an avoidance scheme at the central pipe location, ensure that the lifting column maintains a safe distance from the pipe and does not interfere with pipe operation and hoisting activities. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of a manhole cover hanging column installation structure proposed in this utility model;

[0017] Figure 2 This is a side view of a manhole cover hanging column installation structure proposed in this utility model;

[0018] Figure 3 This is a top view schematic diagram of a manhole cover hanging column installation structure proposed in this utility model.

[0019] In the diagram: 1. Pressure vessel body; 2. Manhole cover; 3. Sealing gasket; 4. Center connecting pipe; 5. Lifting lug; 6. Locking pin; 7. Lifting ring; 8. Reinforcing rib plate; 9. Fastening nut; 10. First lifting column; 11. Second lifting column; 12. Support plate. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0021] Reference Figures 1-3 A manhole cover lifting column installation structure includes a pressure vessel body 1 and a manhole cover 2. The manhole cover 2 is fixed to the top of the pressure vessel body 1 by bolts. Two lifting lugs 5 are welded to both sides of the outer wall of the top of the manhole cover 2. A locking pin 6 is engaged between the two lifting lugs 5. A lifting ring 7 is welded to the outer wall of the locking pin 6. A fastening nut 9 is threaded on the top of the lifting ring 7. A reinforcing rib plate 8 is fitted on the lifting ring 7. A first lifting column 10 is welded between the two reinforcing rib plates 8. The first lifting column 10 is fixedly connected to the manhole cover 2 through the reinforcing rib plate 8 and the lifting ring 7 to form a stable lifting support structure. A second lifting column 11 is welded to one side of the first lifting column 10. The first lifting column 10, the second lifting column 11 and the manhole cover 2 are connected to the reinforcing rib plate 8 made of high-strength material to improve tensile and bending resistance.

[0022] A sealing gasket 3 is provided between the pressure vessel body 1 and the manhole cover 2 to seal the pressure vessel body 1 and the manhole cover 2. A central connecting pipe 4 is welded to the top of the manhole cover 2. The first lifting column 10 has a C-shaped structure and the second lifting column 11 has an arc-shaped structure. Two support plates 12 are welded to one side of the pressure vessel body 1, and the bottom end of the second lifting column 11 passes through the support plate 12.

[0023] The working principle of this embodiment is as follows: When in use, the lifting lugs 5 of the lifting point support are symmetrically arranged on both sides of the manhole cover 2, and the lifting center of gravity is calculated according to the size of the manhole cover 2. The position of the lifting point is adjusted. Then, the first lifting column 10 and the manhole cover 2 are connected by the reinforcing rib plate 8 to ensure that the force at the connection is uniform. Then, the pressure vessel body 1 and the manhole cover 2 are sealed by the sealing gasket 3.

[0024] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A manhole cover mounting structure, comprising a pressure vessel body (1) and a manhole cover (2), wherein the manhole cover (2) is fixed to the top of the pressure vessel body (1) by bolts, characterized in that, Two lifting lugs (5) are fixedly connected to both sides of the top outer wall of the manhole cover (2). A locking pin (6) is engaged between the two lifting lugs (5). A lifting ring (7) is fixedly connected to the outer wall of the locking pin (6). A fastening nut (9) is threaded on the top of the lifting ring (7). A reinforcing rib plate (8) is sleeved on the lifting ring (7). A first lifting column (10) is fixedly connected between the two reinforcing rib plates (8). A second lifting column (11) is fixedly connected to one side of the first lifting column (10).

2. The manhole cover hanging column installation structure according to claim 1, characterized in that, A sealing gasket (3) is provided between the pressure vessel body (1) and the manhole cover (2).

3. The manhole cover hanging column installation structure according to claim 1, characterized in that, The top of the manhole cover (2) is fixedly connected to a central connecting pipe (4).

4. The manhole cover hanging column installation structure according to claim 1, characterized in that, The first hanging column (10) has a C-shaped structure.

5. The manhole cover hanging column installation structure according to claim 1, characterized in that, The second hanging column (11) has an arc-shaped structure.

6. The manhole cover hanging column installation structure according to claim 1, characterized in that, Two support plates (12) are fixedly connected to one side of the pressure vessel body (1), and the bottom end of the second hanging column (11) passes through the support plate (12).

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