CN215565258U

CN215565258U - Connecting device for manhole door

Info

Publication number: CN215565258U
Application number: CN202121944669.8U
Authority: CN
Inventors: 曹敏; 薛永阳; 谭书莹; 耿琦
Original assignee: Huaneng Shandong Shidaobay Nuclear Power Co Ltd
Current assignee: Huaneng Shandong Shidaobay Nuclear Power Co Ltd
Priority date: 2021-08-18
Filing date: 2021-08-18
Publication date: 2022-01-18
Anticipated expiration: 2031-08-18

Abstract

The utility model relates to the technical field of manhole door dismounting and overhauling, in particular to a manhole door connecting device. The connecting device of manhole door includes: the first end of the first connecting rod is suitable for being hinged on the boiler; the first end of the second connecting rod is hinged with the second end of the first connecting rod; and the first end of the soft connecting piece is connected with the second end of the second connecting rod, and the second end of the soft connecting piece is suitable for being connected with the manhole door. According to the manhole door, the first end of the flexible connecting piece is connected with the second end of the second connecting rod, the second end of the flexible connecting piece is suitable for being connected with the manhole door, the deformation of the first connecting rod and the second connecting rod can be compensated through the flexible connecting piece, the manhole door can be lifted to a normal height when being installed again, the sealing performance of the manhole door is further ensured, the manhole door is more convenient to assemble and disassemble, and the manhole door is convenient to overhaul.

Description

Connecting device for manhole door

Technical Field

The utility model relates to the technical field of manhole door dismounting and overhauling, in particular to a manhole door connecting device.

Background

In the high-temperature gas cooled reactor project, an auxiliary electric boiler system provides auxiliary steam for unit cold start and a steam turbine shaft seal, and simultaneously provides heating steam for a whole plant heating system when the unit is not in operation.

In order to facilitate the inspection and maintenance of the inside of the container when the auxiliary electric boiler is stopped, an inspection manhole door needs to be arranged on the surface of the container, and the manhole door of the auxiliary electric boiler is of a self-sealing structure and is connected to the inner wall of the boiler by a connecting rod device. Because inside is in high temperature high pressure environment and the manhole door is heavier when supplementary electric boiler moves, the connecting rod has taken place to warp, the whole height ratio of manhole door is normal back to adorn about 8cm, it is unable to carry the manhole door to normal height to lean on the manpower during back to adorn simply, utilize tools such as crow bar not have reliable fulcrum again, cause the difficulty of adorning back at every turn, it is consuming time longer, the repeated action of manhole door leads to the skew of gasket even damaged easily when repacking simultaneously, lead to the manhole door to have the leakage risk, influence the sealed reliability of manhole, consequently, the urgent need for a connecting device of portable self sealss manhole door now.

SUMMERY OF THE UTILITY MODEL

The utility model mainly aims to provide a manhole door connecting device to solve the problem that in the prior art, a manhole door is difficult to install again due to serious deformation of a connecting rod device.

To achieve the above object, the present invention provides a manhole door connecting device, comprising: the first end of the first connecting rod is suitable for being hinged on the boiler; the first end of the second connecting rod is hinged with the second end of the first connecting rod; and the first end of the soft connecting piece is connected with the second end of the second connecting rod, and the second end of the soft connecting piece is suitable for being connected with the manhole door.

Optionally, the flexible connector is a chain.

Optionally, the second connecting rod includes an L-shaped rod, the L-shaped rod includes a first rod segment and a second rod segment arranged at an included angle, one end of the first rod segment away from the second rod segment is hinged to the second end of the first connecting rod, and one end of the second rod segment away from the first rod segment is connected to the first end of the flexible connector.

Optionally, the first pole segment is arranged in a vertical direction and the second pole segment is arranged in a horizontal direction.

Optionally, a support plate is connected between the first pole segment and the second pole segment.

Optionally, the connecting device further includes a first bolt and a first nut, the first bolt is fixed to the first end of the chain, the second end of the second connecting rod is provided with a first through hole, and the first bolt penetrates through the first through hole and is connected with the first nut.

Optionally, the connecting device further comprises a second bolt and a second nut, the second bolt is fixed to the second end of the chain, a second through hole is formed in the manhole door, and the second bolt penetrates through the second through hole and is connected with the second nut.

Optionally, the first end of the first connecting rod has a third through hole, the boiler is provided with a fixing support, the fixing support has a fixing hole, the connecting device further includes a third bolt and a third nut, and the third nut penetrates through the third through hole and the fixing hole and is connected with the third nut.

Optionally, the fixing bracket includes an upper fixing plate and a lower fixing plate which are vertically disposed, the first end of the first connecting rod is located between the upper fixing plate and the lower fixing plate, and fixing holes are respectively formed in the upper fixing plate and the lower fixing plate.

Optionally, the connecting device further comprises a fourth nut, the second end of the second connecting rod is provided with an external thread, the second end of the first connecting rod is provided with a fourth through hole, and the second end of the second connecting rod passes through the fourth through hole to be connected with the fourth nut.

The technical scheme of the utility model has the following advantages: the first end of flexible connectors is connected with the second end of second connecting rod and the second end is suitable for and is connected with the manhole door, can compensate the deflection of first connecting rod and second connecting rod through flexible connectors, and when the manhole door repacked, can carry the manhole door to normal height, and then ensure the leakproofness of manhole door, also make the manhole door dismouting more convenient, convenient maintenance.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

FIG. 1 shows a schematic top view of a manhole door coupling device according to an embodiment of the utility model;

fig. 2 shows a schematic front view of the second link, chain bolt and first nut cooperation of the connection device of fig. 1.

Description of reference numerals:

10. a first link; 20. a second link; 21. an L-shaped rod; 22. a support plate; 31. a chain; 32. a first bolt; 33. a second bolt; 51. a first nut; 53. a third nut; 54. a fourth nut; 60. fixing a bracket; 70. a manhole door; 71. and sealing the bolt.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

As shown in fig. 1 and 2, the connecting device of the manhole door of the present embodiment includes: the boiler comprises a first connecting rod 10, a second connecting rod 20 and a flexible connecting piece, wherein the first end of the first connecting rod 10 is suitable for being hinged on a boiler; the first end of the second connecting rod 20 is hinged with the second end of the first connecting rod 10; the first end of the flexible connector is connected to the second end of the second link 20 and the second end is adapted to be connected to the manhole door 70.

Use the connecting device of the manhole door of this embodiment, the first end of flexible connectors and the second end of second connecting rod 20 are connected and the second end is suitable for being connected with manhole door 70, can compensate the deflection of first connecting rod 10 and second connecting rod 20 through flexible connectors, and when the manhole door repacked, can carry the manhole door to normal height, and then ensure the leakproofness of manhole door, also make the manhole door dismouting more convenient, the convenient maintenance.

In this embodiment, the flexible connecting element is a chain 31, and the structural strength of the chain 31 is high, so as to prevent the flexible connecting element from breaking.

In this embodiment, the second link 20 includes an L-shaped rod 21, and the L-shaped rod 21 includes a first rod section and a second rod section arranged at an included angle, wherein an end of the first rod section away from the second rod section is hinged to the second end of the first link 10, and an end of the second rod section away from the first rod section is connected to the first end of the flexible connector. The L-shaped rod 21 has a simple structure and low cost. Preferably, the first pole segment is disposed in a vertical direction and the second pole segment is disposed in a horizontal direction, so as to facilitate connection with the manhole door 70 and the first connecting rod 10. Of course, the second link may also have an inverted U-shape.

In this embodiment, a support plate 22 is connected between the first rod segment and the second rod segment, and the support plate 22 enables the structural strength of the second connecting rod to be high, thereby preventing the second connecting rod from deforming. Preferably, the support plate 22 is welded at both ends to the first and second segments to ensure the strength of the connection.

In this embodiment, the connecting device further includes a first bolt 32 and a first nut 51, the first bolt 32 is fixed on the first end of the chain 31, the second end of the second link 20 is provided with a first through hole, the first bolt 32 passes through the first through hole to be connected with the first nut 51, and the second link 20 and the chain 31 are fastened together through the first bolt 32 and the first nut 51, so that the fixing is firmer and more reliable.

In this embodiment, the connecting device further includes a second bolt 33 and a second nut, the second bolt 33 is fixed on the second end of the chain 31, a second through hole is provided on the manhole door 70, and the second bolt 33 passes through the second through hole and is connected with the second nut. The chain 31 and the manhole door 70 are fixed together by the second bolt 33 and the second nut, and the fixing is simple and convenient. The manhole door 70 is provided with a sealing bolt 71.

In the present embodiment, the chain 31, the first bolt 32, and the second bolt 33 are fixed together to form a chain bolt.

In this embodiment, the first end of the first connecting rod 10 has a third through hole, the boiler is provided with a fixing bracket 60, the fixing bracket 60 has a fixing hole, the connecting device further includes a third bolt and a third nut 53, and the third nut 53 passes through the third through hole and the fixing hole to be connected with the third nut 53. The first link 10 is connected to the fixing bracket 60 by a third bolt and a third nut 53 so that the first link 10 can be rotated about the axis of the third bolt, and thus the manhole door can be opened or closed. Preferably, the fixing bracket 60 is fixed to the inner wall of the boiler.

In this embodiment, the fixing bracket 60 includes an upper fixing plate and a lower fixing plate which are vertically disposed, the first end of the first connecting rod 10 is located between the upper fixing plate and the lower fixing plate, and fixing holes are respectively formed on the upper fixing plate and the lower fixing plate. The first connecting rod 10 is supported by the upper fixing plate and the lower fixing plate, and the structure is more stable.

In this embodiment, the connecting device further includes a fourth nut 54, the second end of the second connecting rod 20 has an external thread, the second end of the first connecting rod 10 has a fourth through hole, and the second end of the second connecting rod 20 passes through the fourth through hole to be connected with the fourth nut 54. The second connecting rod 20 is connected with the first connecting rod 10 through a nut, and a bolt is not needed, so that parts are saved.

From the above description, it can be seen that the above-described embodiments of the present invention achieve the following technical effects:

1. connecting device of manhole door includes first connecting rod 10, second connecting rod 20 and chain bolt etc, second connecting rod 20 includes L shape pole 21 and backup pad 22, backup pad 22 welds on L shape pole 21, the one end of first connecting rod 10 passes through the bolt and is connected with the nut with fixed bolster 60 on the inner wall of boiler, the other end of first connecting rod 10 passes through the nut with the one end of L shape pole 21 and is connected, the other end of L shape pole 21 is equipped with first through-hole, use the nut fastening after passing first through-hole with chain bolt's first bolt 32, chain bolt's the other end passes through the nut with the manhole door and is connected, can effectively compensate the deflection of L shape pole through adjusting the chain bolt, carry the manhole door normal height in order to satisfy its leakproofness through the manpower, the dismouting to the manhole door during convenient maintenance.

2. When the manhole door is opened or closed, the first link 10 drives the second link 20 to move, thereby opening or closing the manhole door.

3. The connecting device of manhole door adopts chain bolted connection L shape pole and manhole door, even take place to warp at L shape pole and lead to the whole height ratio of manhole door to return the height of dress low, can compensate the deflection of L shape pole through the chain, can just can carry the manhole door to normal height by the manpower, guarantees the leakproofness of manhole door.

4. The connecting device of the manhole door is simple in structure, easy to operate, stable and reliable, simple and convenient to disassemble and assemble, capable of guaranteeing that the self-sealing manhole door is simple and convenient, improving the sealing performance of the manhole door, preventing the internal medium from leaking, effectively solving the problems of difficulty in disassembling and assembling the manhole door, long time consumption, poor sealing and the like, and has high practical significance and popularization and application value in the technical field of disassembling and assembling the self-sealing manhole door.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the utility model.

Claims

1. A manhole door connecting device, comprising:

a first connecting rod (10), the first end of which is suitable for being hinged on the boiler;

a second connecting rod (20), the first end of which is hinged with the second end of the first connecting rod (10);

a flexible connection having a first end connected to the second end of the second link (20) and a second end adapted to be connected to a manhole door (70).

2. A connection device according to claim 1, characterized in that the flexible connection is a chain (31).

3. The connecting device according to claim 1 or 2, characterized in that the second connecting rod (20) comprises an L-shaped rod (21), the L-shaped rod (21) comprising a first rod section and a second rod section arranged at an included angle, the end of the first rod section remote from the second rod section is hinged with the second end of the first connecting rod (10), and the end of the second rod section remote from the first rod section is connected with the first end of the flexible connecting member.

4. A connection device according to claim 3, wherein the first pole segment is arranged in a vertical direction and the second pole segment is arranged in a horizontal direction.

5. A connecting device according to claim 3, characterised in that a support plate (22) is connected between the first pole segment and the second pole segment.

6. The connecting device according to claim 2, further comprising a first bolt (32) and a first nut (51), wherein the first bolt (32) is fixed to a first end of the chain (31), and a second end of the second link (20) is provided with a first through hole, through which the first bolt (32) is connected with the first nut (51).

7. The connecting device according to claim 2, further comprising a second bolt (33) and a second nut, wherein the second bolt (33) is fixed to the second end of the chain (31), and a second through hole is provided on the manhole door (70), and the second bolt (33) is connected with the second nut through the second through hole.

8. The connecting device according to claim 1, wherein the first end of the first connecting rod (10) has a third through hole, a fixing bracket (60) is provided on the boiler, the fixing bracket (60) has a fixing hole, the connecting device further comprises a third bolt and a third nut (53), and the third nut (53) is connected with the third nut (53) through the third through hole and the fixing hole.

9. The connecting device according to claim 8, wherein the fixing bracket (60) comprises an upper fixing plate and a lower fixing plate which are arranged up and down, the first end of the first connecting rod (10) is located between the upper fixing plate and the lower fixing plate, and the fixing holes are respectively arranged on the upper fixing plate and the lower fixing plate.

10. The connecting device according to claim 1, characterized in that it further comprises a fourth nut (54), the second end of the second connecting rod (20) being externally threaded, the second end of the first connecting rod (10) having a fourth through hole through which the second end of the second connecting rod (20) is connected with the fourth nut (54).