CN216577614U

CN216577614U - Disassembling tool for inverted sealing manhole assembly

Info

Publication number: CN216577614U
Application number: CN202123237733.1U
Authority: CN
Inventors: 胡强; 张华龙; 黄明; 王炳舜; 连永亮; 孟路; 何鹏俊
Original assignee: National Nuclear Demonstration Power Plant Co ltd
Current assignee: National Nuclear Demonstration Power Plant Co ltd
Priority date: 2021-12-22
Filing date: 2021-12-22
Publication date: 2022-05-24
Anticipated expiration: 2031-12-22

Abstract

The utility model belongs to the technical field of manhole assemblies and discloses a disassembling and assembling tool for a reverse sealing manhole assembly. On the other hand, fixed subassembly is fixed with the manhole seat, and the bracket component respectively with fixed subassembly and first sleeve fixed connection, for the pull rod provides the support effect, has realized that the pull rod balances and supports the effect to the weight of manhole cover, has solved the problem that the manhole cover appears rocking easily and the unstable problem of focus in the removal process.

Description

Disassembling tool for inverted sealing manhole assembly

Technical Field

The utility model relates to the technical field of manhole assemblies, in particular to a disassembling tool for an inverted sealing manhole assembly.

Background

The inverted sealing manhole assembly is often used in high pressure heaters or boilers and is an open structure for personnel to enter and exit the equipment for installation, maintenance and safety inspection. The inverted sealing manhole assembly mainly comprises a manhole seat and a manhole cover, the manhole seat is fixed on a tank body of equipment such as a high-pressure heater or a boiler, the manhole cover is arranged on the inner side of the tank body, an installation clamping block is arranged on the end face of the manhole cover facing to the outer side of the tank body, a pre-tightening bolt can be detachably connected to the installation clamping block, a pressing plate and a pre-tightening nut are arranged at the other end of the pre-tightening bolt, the pressing plate is tightly pressed on the end face of the manhole seat facing to the outer side of the tank body through the threaded fit of the pre-tightening bolt and the pre-tightening nut, and the fixed connection of the manhole cover and the manhole seat is achieved. In addition, a sealing ring is arranged between the manhole cover and the manhole seat, and when the air pressure in the tank body reaches a certain value, the manhole cover presses the sealing ring on the end face of the manhole seat, so that the inverted sealing effect is realized.

The manhole cover is limited by the structural form of the inverted sealing manhole assembly, in the prior art, the manhole cover is usually disassembled and assembled by first providing support with the aid of equipment such as a travelling crane, a scaffold, a chain block and the like, and then the manhole cover is disassembled and assembled in a manual traction mode. In the traction process, the manhole cover is very easy to shake, rotate and have unstable gravity center, the weight of the manhole cover needs to be balanced in a manual control mode, and the hidden danger that the manhole cover collides is also existed.

Therefore, it is desirable to provide a disassembling tool for a reverse sealing manhole assembly to solve the problems of shaking, rotation and unstable center of gravity during the disassembling process of the manhole cover.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a disassembling tool for an inverted sealing manhole assembly, which can solve the problems of shaking, rotation and unstable gravity center easily occurring in the disassembling process of a manhole cover.

In order to achieve the purpose, the utility model adopts the following technical scheme:

a reverse seal manhole assembly removal tool comprising:

the bracket assembly comprises a first bracket, a second bracket, a third bracket and a first sleeve, wherein the second bracket and the third bracket are respectively fixed at two ends of the first bracket, and the first sleeve is fixed on the third bracket;

the fixing component is connected with the second support and can be fixed on a manhole seat of the inverted sealing manhole component;

the pull rod assembly comprises a second sleeve, a pull rod and a fixing piece, wherein the second sleeve is arranged in the first sleeve in a sleeved mode and is in clearance fit with the first sleeve, one of the second sleeve and the first sleeve is provided with a sliding groove, the other one of the second sleeve and the first sleeve is provided with a sliding rail, the sliding groove is in sliding fit with the sliding rail, one end of the pull rod penetrates through the second sleeve and is fixedly connected with the second sleeve through the fixing piece, and the other end of the pull rod can be detachably connected with a manhole cover of the inverted sealing manhole assembly.

Optionally, the pull rod is clearance fit with the second sleeve.

Optionally, the length of the second sleeve is greater than the length of the first sleeve.

Optionally, the fixing member comprises a first bolt and a first nut.

Optionally, a connecting plate is fixed on the manhole cover, and the other end of the pull rod is detachably connected with the connecting plate through a second bolt and a second nut.

Optionally, the other end of the pull rod is provided with a transverse cutting plane, and the transverse cutting plane can be attached to the connecting plate.

Optionally, the end face of the other end of the pull rod is an arc face.

Optionally, the fixing assembly includes a first fixing member and a second fixing member, the first fixing member is fixedly connected to the second bracket, one end of the second fixing member is detachably connected to the second bracket, and the other end of the second fixing member is detachably connected to the first fixing member, so as to clamp the manhole base between the first fixing member and the second fixing member.

Optionally, one end of the second fixing piece is detachably connected to the second support through a third bolt and a third nut, and the other end of the second fixing piece is detachably connected to the first fixing piece through a fourth bolt and a fourth nut.

Optionally, the bracket assembly further includes a fourth bracket and a third sleeve, the fourth bracket is located between the second bracket and the third bracket, one end of the fourth bracket is fixed on the first bracket, the other end of the fourth bracket is connected with the third sleeve, and the pull rod is inserted into the third sleeve and is in clearance fit with the third sleeve.

Has the advantages that:

according to the disassembling tool for the inverted seal manhole assembly, the second sleeve is in clearance fit with the first sleeve, the sliding groove and the sliding rail structure are arranged, the effect that the first sleeve limits the second sleeve in the circumferential direction is achieved, one end of the pull rod is sleeved in the second sleeve, the pull rod and the second sleeve are fixed through the fixing piece, the effect that the second sleeve limits the pull rod in the circumferential direction and the axial direction is achieved, after the other end of the pull rod and a manhole cover are fixed, the manhole cover can only move in the axial direction of the pull rod under the driving of the pull rod, and the problem that the manhole cover is prone to rotate in the moving process is solved. On the other hand, fixed subassembly is fixed with the manhole seat, and the bracket component respectively with fixed subassembly and first sleeve fixed connection, for the pull rod provides the support effect, has realized that the pull rod balances and supports the effect to the weight of manhole cover, has solved the problem that the manhole cover appears rocking easily and the unstable problem of focus in the removal process.

Drawings

FIG. 1 is a first schematic structural view of a tool for disassembling and assembling a reverse sealing manhole assembly according to the present invention;

FIG. 2 is a schematic structural view of a second tool for disassembling and assembling a reverse sealing manhole assembly according to the present invention;

FIG. 3 is a schematic view of the tool for disassembling and assembling a reverse sealed manhole assembly of the present invention and a manhole cover;

fig. 4 is a partially enlarged view of a portion a in fig. 2.

In the figure:

110. a first bracket; 120. a second bracket; 130. a third support; 140. a fourth bracket; 150. a first sleeve; 160. a third sleeve; 210. a second sleeve; 220. a pull rod; 221. transecting the plane; 222. a handle; 231. a second bolt; 232. a second nut; 310. a first fixing member; 320. a second fixing member; 331. a third bolt; 332. a third nut; 341. a fourth bolt; 342. a fourth nut; 400. a manhole cover; 410. a connecting plate; 420. and (6) installing a clamping block.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the utility model and are not limiting of the utility model. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "right", etc. are used in an orientation or positional relationship based on that shown in the drawings only for convenience of description and simplicity of operation, and do not indicate or imply that the device or element 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" and "second" are used only for descriptive purposes and are not intended to have a special meaning.

The embodiment provides a falling sealed manhole subassembly assembly and disassembly tools, can solve the manhole cover dismouting in-process and appear rocking easily, rotate and the unstable problem of focus.

Specifically, as shown in fig. 1, the disassembly and assembly tool for a reverse sealing manhole assembly includes a bracket assembly, a fixing assembly and a pull rod assembly, where the bracket assembly includes a first bracket 110, a second bracket 120, a third bracket 130 and a first sleeve 150, the second bracket 120 and the third bracket 130 are respectively fixed at two ends of the first bracket 110, and the first sleeve 150 is fixed on the third bracket 130; the fixing component is connected with the second bracket 120, and the fixing component can be fixed on a manhole seat of the inverted sealing manhole component; the pull rod assembly comprises a second sleeve 210, a pull rod 220 and a fixing piece, the second sleeve 210 is sleeved in the first sleeve 150 and is in clearance fit with the first sleeve 150, one of the second sleeve 210 and the first sleeve 150 is provided with a sliding groove, the other one of the second sleeve 210 and the first sleeve 150 is provided with a sliding rail, the sliding groove is in sliding fit with the sliding rail, one end of the pull rod 220 penetrates through the second sleeve 210 and is fixedly connected with the second sleeve 210 through the fixing piece, and the other end of the pull rod 220 can be detachably connected with a manhole cover 400 of the inverted sealing manhole assembly.

Above-mentioned fall sealed manhole subassembly assembly and disassembly tools, second sleeve 210 and first sleeve 150 clearance fit, and set up spout and slide rail structure, realize first sleeve 150 to the spacing effect of second sleeve 210 circumference, establish a pot head of pull rod 220 in second sleeve 210, and fix pull rod 220 and second sleeve 210 through the mounting, realize that second sleeve 210 is to the spacing and the spacing effect of axial of the circumference of pull rod 220, fix the other end of pull rod 220 with manhole cover 400 after, under the drive of pull rod 220, manhole cover 400 can only follow pull rod 220 axial direction and remove, the pivoted problem has been solved manhole cover 400 and has appeared easily in the removal process. On the other hand, fixed subassembly is fixed with the manhole seat, and the bracket component respectively with fixed subassembly and first sleeve 150 fixed connection, for pull rod 220 provides the support effect, has realized that pull rod 220 balances and supports the effect to manhole cover 400's weight, has solved manhole cover 400 and has appeared the problem of rocking and the unstable problem of focus easily in the removal process. On the other hand, the disassembly and assembly of the manhole cover 400 and the manhole seat can be realized through simple operation of the push-pull rod 220, and manual traction operation is omitted, so that the disassembly and assembly work of the manhole cover 400 is simpler, the operation proficiency of workers can be quickly improved, the disassembly and assembly efficiency of the manhole cover 400 is further improved, and powerful guarantee is provided for the personal safety of the workers. On the other hand, the fixing component and the bracket component are matched to provide supporting force for the pull rod 220, so that supporting equipment such as a travelling crane, a scaffold, a chain block and the like is omitted on the premise of not damaging equipment such as a reverse sealing manhole component, a high-pressure heater or a boiler and the like. Finally, the disassembling tool for the inverted sealing manhole assembly provided by the embodiment has the advantages of simple structure, low production cost and suitability for wide popularization and application, and can be manufactured in a simple production and processing mode.

Optionally, the sliding groove is disposed on the first sleeve 150, and the sliding rail is disposed on the second sleeve 210, so that after long-term use, if the sliding rail is damaged, the second sleeve 210 can be detached for replacement. Of course, in other embodiments, the sliding groove may be disposed on the second sleeve 210 and the sliding rail may be disposed on the first sleeve 150.

Alternatively, as shown in fig. 1, the length of the second sleeve 210 is greater than that of the first sleeve 150, and when the second sleeve 210 is slidably engaged with the first sleeve 150 through the sliding slot and sliding rail structure, two ends of the second sleeve 210 may respectively extend out from two ends of the first sleeve 150, so as to observe and control the sliding of the second sleeve 210. On the other hand, this structural design can increase the area of contact of spout and slide rail, improves first sleeve 150 to the spacing effect of second sleeve 210, and then improves the stability of pull rod 220 when the push-and-pull manhole seat. On the other hand, when the pull rod 220 is fixed to the second sleeve 210 by the fixing member, the position where the second sleeve 210 extends out of the first sleeve 150 can be conveniently fixed, and the fixing manner of the pull rod 220 and the second sleeve 210 is simplified.

Optionally, the pull rod 220 is in clearance fit with the second sleeve 210 to realize rotation of the pull rod 220 in the second sleeve 210, and when the manhole cover 400 is disassembled and assembled, the rotation of the manhole cover 400 can be realized by rotating the pull rod 220.

Optionally, a first connecting hole is formed in the pull rod 220, a second connecting hole is formed in the second sleeve 210, the fixing piece comprises a first bolt and a first nut, the first bolt penetrates through the first connecting hole and the second connecting hole, one end of the penetrating bolt is in threaded fit with the first nut, the pull rod 220 and the second sleeve 210 are fixed, the fixing mode of the bolt and the nut is simple, a reliable fixing effect is achieved, the fixing effect between the pull rod 220 and the second sleeve 210 is also reliable, and in the process of pushing and pulling the manhole cover 400 through the pull rod 220, the stability of the manhole cover 400 can be effectively improved.

Optionally, as shown in fig. 1, the fixing assembly includes a first fixing element 310 and a second fixing element 320, the first fixing element 310 is fixedly connected to the second bracket 120, one end of the second fixing element 320 is detachably connected to the second bracket 120, and the other end of the second fixing element 320 is detachably connected to the first fixing element 310, so as to clamp the manhole seat between the first fixing element 310 and the second fixing element 320, thereby fixing the fixing assembly and the manhole seat. Of course, in other embodiments, the first fixing member 310 and the second fixing member 320 may be detachably connected to the second bracket 120.

Preferably, in order to adapt to the manhole seat having a cylindrical structure in the prior art, with reference to fig. 1, in the technical scheme provided in this embodiment, the first fixing member 310 and the second fixing member 320 are both semi-annular structures, and the first fixing member 310 and the second fixing member 320 having the semi-annular structures are clamped outside the manhole seat having the cylindrical structure, so that the contact areas of the first fixing member 310 and the second fixing member 320 with the manhole seat respectively can be effectively increased, the reliability of fixing the fixing component on the manhole seat is improved, and further, the reliability of supporting the pull rod 220 by the fixing component through the bracket component is improved. It is understood that in other embodiments, the first fixing member 310 and the second fixing member 320 may have other structures, such as a plate-shaped structure, and the like, which are not listed here.

Optionally, with reference to fig. 1, one end of the second fixing element 320 is detachably connected to the second bracket 120 through a third bolt 331 and a third nut 332, and the other end of the second fixing element is detachably connected to the first fixing element 310 through a fourth bolt 341 and a fourth nut 342, and by screwing the third nut 332 and the fourth nut 342, the distance between the first fixing element 310 and the second fixing element 320 is adjusted, so that not only can the fastening degree of the fixing assembly for tightening the manhole base be adjusted, but also the fixing assembly can tighten manhole bases with different diameters.

Optionally, as shown in fig. 2, the bracket assembly further includes a fourth bracket 140 and a third sleeve 160, the fourth bracket 140 is located between the second bracket 120 and the third bracket 130, one end of the fourth bracket 140 is fixed on the first bracket 110, and the other end is connected to the third sleeve 160, the pull rod 220 is inserted into the third sleeve 160 and is in clearance fit with the third sleeve 160, so as to increase a supporting point provided by the bracket assembly for the pull rod 220, and improve the reliability of the bracket assembly for supporting the pull rod 220.

In the technical solution provided in this embodiment, the first bracket 110, the second bracket 120, the third bracket 130, and the fourth bracket 140 are an integrated structure, so as to improve the structural integrity of the bracket assembly. Of course, in other embodiments, the first support 110, the second support 120, the third support 130, and the fourth support 140 may also be a split structure, and may be set according to actual needs.

Optionally, with continued reference to fig. 2, a handle 222 is disposed at an end of the pull rod 220 adjacent to the second sleeve 210 to facilitate the pulling, pushing, and rotating operations of the pull rod 220.

Optionally, as shown in fig. 3, a connection plate 410 is often fixed on an end surface of the manhole cover 400 in the prior art, in the technical solution provided in this embodiment, the other end of the pull rod 220 is detachably connected to the connection plate 410 through a second bolt 231 and a second nut 232, thereby realizing connection between the pull rod 220 and the manhole seat. On the other hand, the angle between the end surface of the manhole cover 400 and the axis of the pull rod 220 can be adjusted by screwing the second nut 232, that is, the manhole cover 400 is turned over on the pull rod 220.

Preferably, with reference to fig. 3, the end surface of the other end of the pull rod 220 (i.e. the end connected to the manhole cover 400) is an arc surface structure, so as to enlarge the gap between the end surface of the manhole cover 400 and the end surface of the pull rod 220, and further enlarge the adjustment range of the included angle between the end surface of the manhole cover 400 and the axis of the pull rod 220.

Optionally, as shown in fig. 3, a transverse plane 221 is formed at the other end of the pull rod 220 (i.e., the end connected to the manhole cover 400), and the transverse plane 221 can be attached to the connection plate 410, so as to increase the contact area between the pull rod 220 and the connection plate 410 and improve the reliability of connection between the pull rod 220 and the manhole cover 400.

The following will briefly describe the use of the tool for detaching the inverted sealing manhole assembly provided in this embodiment, taking the inverted sealing manhole assembly on the high pressure heater as an example.

This fall sealed manhole subassembly includes manhole seat and manhole cover 400 usually, and manhole cover 400 roughly is oval structure, and the mounting hole that is used for installing manhole cover 400 on the manhole seat also is oval structure, and the manhole seat is fixed on high pressure feed water heater's the jar body, and manhole cover 400 sets up at jar internal side and passes through sealing washer sealing connection with the manhole seat. The manhole cover 400 is provided with a connecting plate 410 and two mounting fixture blocks 420 on the end surface facing the outer side of the tank body, the two mounting fixture blocks 420 are detachably connected with the two pre-tightening bolts respectively, a pressing plate and a pre-tightening nut are arranged at the end, not connected with the mounting fixture blocks 420, of the pre-tightening bolt, and the pressing plate can be tightly pressed on the end surface, facing the outer side of the tank body, of the manhole seat through the threaded fit of the pre-tightening bolt and the pre-tightening nut, so that the manhole cover 400 is fixedly connected with the manhole seat.

Disassembling operation of the manhole cover 400:

s1, cleaning the outside of the manhole seat;

s2, hooping the fixing component outside the manhole seat, and adjusting the third nut 332 and the fourth nut 342 to enable the first fixing piece 310 and the second fixing piece 320 to have proper tightness;

s3, penetrating the second sleeve 210 into the first sleeve 150, penetrating one end of the pull rod 220 into the second sleeve 210, and penetrating the other end of the pull rod 220 through the fixing component;

s4, detaching one group of pre-tightening bolts, pre-tightening nuts and pressure plates on the manhole cover 400, and temporarily retaining the other group;

s5, connecting the pull rod 220 with the connecting plate 410 on the manhole cover 400 through a second bolt 231 and a second nut 232;

s6, disassembling the other group of pre-tightening bolts, pre-tightening nuts and pressing plates on the manhole cover 400;

s7, pushing the pull rod 220 along the direction towards the inner side of the tank body, and pushing the manhole cover 400 into the water chamber on the inner side of the tank body;

s8, removing the first nut and the first bolt, rotating the pull rod 220 in the second sleeve 210 for 90 degrees, making the long axis of the manhole cover 400 and the long axis of the manhole cover mounting hole in a vertical state, and leaving a gap between the manhole cover 400 and the manhole seat;

and S9, screwing the second nut 232 again, slightly loosening the pull rod 220 and the manhole cover 400, overturning the manhole cover 400 to enable the end face of the manhole cover 400 to be parallel to the axis of the pull rod 220, pulling the manhole cover 400 out of the manhole seat, and completing the disassembling work of the manhole cover 400.

Installation operation of the manhole cover 400:

s1, cleaning the outside of the manhole seat;

s2, hooping the fixing assembly outside the manhole seat, and adjusting the third nut 332 and the fourth nut 342 to enable the first fixing piece 310 and the second fixing piece 320 to have proper tightness;

s4, hanging the sealing ring on the rod body of the pull rod 220;

s6, pushing the pull rod 220 along the direction towards the inner side of the tank body, and pushing the manhole cover 400 into the water chamber on the inner side of the tank body;

s7, installing the sealing ring at a proper position between the manhole cover 400 and the manhole seat;

s8, screwing the second nut 232 again, slightly loosening the pull rod 220 and the manhole cover 400, and turning over the manhole cover 400 to enable the end face of the manhole cover 400 to be perpendicular to the axis of the pull rod 220;

s9, detaching the first nut and the first bolt, rotating the pull rod 220 in the second sleeve 210 by 90 degrees, and enabling the long axis of the manhole cover 400 to be parallel to the long axis of the mounting hole of the manhole cover;

s10, pulling the pull rod 220 along the direction towards the outer side of the tank body, so that the manhole cover 400 presses the sealing ring on the manhole seat;

s11, installing a group of pre-tightening bolts, pre-tightening nuts and a pressing plate on the manhole cover 400;

s12, detaching the second nut 232 from the second bolt 231, and further detaching the drawbar 220 from the manhole cover 400;

s13, installing another group of pre-tightening bolts, pre-tightening nuts and pressing plates on the manhole cover 400;

and S14, detaching the fixing assembly from the outside of the manhole seat, cleaning the site and completing the installation work of the manhole cover 400.

It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Numerous obvious variations, adaptations and substitutions will occur to those skilled in the art without departing from the scope of the utility model. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A tool for disassembling and assembling a reverse sealing manhole assembly, comprising:

the bracket assembly comprises a first bracket (110), a second bracket (120), a third bracket (130) and a first sleeve (150), wherein the second bracket (120) and the third bracket (130) are respectively fixed at two ends of the first bracket (110), and the first sleeve (150) is fixed on the third bracket (130);

the fixing component is connected with the second support (120) and can be fixed on a manhole seat of the inverted sealing manhole component;

the pull rod assembly comprises a second sleeve (210), a pull rod (220) and a fixing piece, wherein the second sleeve (210) is sleeved in the first sleeve (150) and is in clearance fit with the first sleeve (150), one of the second sleeve (210) and the first sleeve (150) is provided with a sliding groove, the other one of the second sleeve (210) and the first sleeve (150) is provided with a sliding rail, the sliding groove is in sliding fit with the sliding rail, one end of the pull rod (220) penetrates through the second sleeve (210) and is fixedly connected with the second sleeve (210) through the fixing piece, and the other end of the pull rod (220) can be detachably connected with a manhole cover (400) of the inverted seal manhole assembly.

2. The tool of claim 1, wherein the tie rod (220) is a clearance fit with the second sleeve (210).

3. The tool of claim 1 or 2, wherein the second sleeve (210) has a length greater than the length of the first sleeve (150).

4. The tool of claim 1 or 2, wherein the fixture comprises a first bolt and a first nut.

5. The disassembling tool for the inverted sealing manhole assembly according to claim 1 or 2, wherein a connecting plate (410) is fixed on the manhole cover (400), and the other end of the pull rod (220) is detachably connected to the connecting plate (410) through a second bolt (231) and a second nut (232).

6. The tool for disassembling and assembling the inverted seal manhole assembly as claimed in claim 5, wherein the other end of the pull rod (220) is provided with a transverse plane (221), and the transverse plane (221) can be attached to the connecting plate (410).

7. The tool for disassembling and assembling a reverse sealing manhole assembly as claimed in claim 5, wherein the other end surface of the pull rod (220) is a cambered surface.

8. The tool for disassembling and assembling a flip-seal manhole assembly as claimed in claim 1 or 2, wherein the fixing assembly comprises a first fixing member (310) and a second fixing member (320), the first fixing member (310) is fixedly connected to the second bracket (120), one end of the second fixing member (320) is detachably connected to the second bracket (120), and the other end of the second fixing member is detachably connected to the first fixing member (310), so as to clamp the manhole base between the first fixing member (310) and the second fixing member (320).

9. The tool for detaching a hermetically sealed manhole assembly as claimed in claim 8, wherein one end of the second fixture (320) is detachably connected to the second bracket (120) by a third bolt (331) and a third nut (332), and the other end is detachably connected to the first fixture (310) by a fourth bolt (341) and a fourth nut (342).

10. The tool for disassembling and assembling the inverted sealing manhole assembly as claimed in claim 1 or 2, wherein the bracket assembly further comprises a fourth bracket (140) and a third sleeve (160), the fourth bracket (140) is located between the second bracket (120) and the third bracket (130), one end of the fourth bracket (140) is fixed on the first bracket (110), the other end of the fourth bracket is connected with the third sleeve (160), and the pull rod (220) is inserted into the third sleeve (160) and is in clearance fit with the third sleeve (160).