CN217195138U

CN217195138U - Dismounting device of oval manhole cover of high pressure feed water heater

Info

Publication number: CN217195138U
Application number: CN202221090355.0U
Authority: CN
Inventors: 王嘉诚; 田瑶
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-05-07
Filing date: 2022-05-07
Publication date: 2022-08-16
Anticipated expiration: 2032-05-07

Abstract

The utility model provides a dismounting device of oval manhole cover of high pressure feed water heater belongs to high pressure feed water heater dismouting technical field. It has solved the inconvenient problem of current dismounting device and manhole cover dismouting. The dismounting device for the oval manhole cover of the high-pressure heater comprises a lever and a manhole cover connecting assembly arranged at the end part of the lever, wherein the manhole cover connecting assembly comprises a hinged shaft and a hinged piece with a U-shaped groove; the articulated elements have a mounting panel, have seted up a plurality of through-hole on the mounting panel, and the lateral wall of oval manhole cover has a plurality of screw thread post, screw thread post and through-hole one-to-one, and corresponding through-hole is passed to the one end of screw thread post, and this end spiro union of screw thread post has lock nut. This structure has solved the inconvenient problem of dismounting device and manhole cover dismouting.

Description

Dismounting device of oval manhole cover of high pressure feed water heater

Technical Field

The utility model belongs to the technical field of high pressure feed water heater dismouting, refer in particular to a dismounting device of oval manhole cover of high pressure feed water heater.

Background

The high pressure heater is a U-shaped heat transmitter and a double flow path, and the water chamber adopts a built-in self-sealing structure. The high-pressure heater is high in operation pressure and temperature, and is affected by sudden changes of pressure and temperature caused by sudden load changes of a unit, faults of a feed water pump, bypass switching and the like during operation, so that the equipment is damaged. Along with the increase of the service life of the high-pressure heater, the leakage frequency and frequency of the high-pressure heater in the running process of the unit also increase year by year. The original high-pressure heater manhole door dismounting tool is heavy and complex, wastes manpower during use, is extremely inconvenient to operate, has potential safety hazards, does not have special lifting equipment at the manhole position of the high-pressure heater, needs to be overhauled and erected at every time, and wastes resources repeatedly.

In order to improve the convenience of the disassembly and assembly of the manhole door, the chinese patent network discloses a disassembling tool of the elliptical manhole cover of the high pressure heater [ grant No.: CN208575778U, including the manhole cover mounting, fixed link and lift by crane strutting arrangement, the manhole cover mounting includes two vertical connecting plates that are parallel to each other that set up from top to bottom, fixed link is including connecting plug-in components and upset connecting rod, it is the cuboid to connect plug-in components, the guide ring cup joints on the upset connecting rod, connect plug-in components and arrange in between two vertical connecting plates, it is articulated between plug-in components and two vertical connecting plates, the articulated bolt passes the vertical connecting plate in lower part in proper order, connect plug-in components and the vertical connecting plate in upper portion, the end of fixed link is equipped with rotatory handle, the middle part at oval manhole cover is installed to the manhole cover mounting adoption welded mode. An operator pushes the manhole cover into the water inlet chamber through the turnover connecting rod, the turnover connecting rod rotates 90 degrees in the vertical plane, and the turnover connecting rod is pulled outwards to pull the manhole cover out of the water inlet chamber along the horizontal direction.

The manhole cover fixing part is installed in the middle of the oval manhole cover in a welding mode, and the dismounting tool is only used for dismounting the manhole cover, so that the dismounting tool and the manhole cover are firmly fixed and are not easy to separate after the manhole cover is dismounted or mounted, and particularly, when part of parts of the dismounting tool are damaged and need to be replaced, the dismounting tool is inconvenient to maintain.

SUMMERY OF THE UTILITY MODEL

The utility model aims at having the above-mentioned problem to current technique, provided a dismounting device of the oval manhole cover of high pressure feed water heater, the utility model aims to solve the technical problem that: how to solve the inconvenient problem of dismounting device and manhole cover dismouting.

The purpose of the utility model can be realized by the following technical proposal:

the dismounting device for the oval manhole cover of the high-pressure heater comprises a lever and a manhole cover connecting assembly arranged at the end part of the lever, and is characterized in that the manhole cover connecting assembly comprises a hinge shaft and a hinge piece with a U-shaped groove, one end of the lever is positioned in the U-shaped groove of the hinge piece, and the hinge piece is hinged at one end of the lever through the hinge shaft; the articulated elements have a mounting panel, a plurality of through-hole has been seted up on the mounting panel, the lateral wall of oval manhole cover has a plurality of screw thread post, screw thread post and through-hole one-to-one, corresponding through-hole is passed to the one end of screw thread post to this end spiro union of screw thread post has lock nut.

Disassembling the oval manhole cover: the mounting plate is fixed on the elliptical manhole cover through a plurality of bolts, the bolt holes are arranged on the mounting plate, and the bolt holes are arranged on the mounting plate; and lift off the back with oval manhole cover, unscrew the lock nut on the screw post in proper order, after all lock nuts all were lifted off, can lift oval manhole cover off from the mounting panel, this dismounting device and oval manhole cover adopt to dismantle connected mode, have solved the inconvenient problem of traditional dismounting device with the dismouting of manhole cover, have improved the convenience to the dismounting device maintenance.

In the dismounting device for the oval manhole cover of the high-pressure heater, all the through holes and all the threaded columns are distributed annularly. Through the setting of this structure, through-hole and screw thread post distribute evenly, further improve the stability and the firmness of mounting panel and oval manhole cover installation.

In foretell dismounting device of oval manhole cover of high pressure feed water heater, the mounting panel is circular, the articulated elements still includes the fixed plate of two symmetry settings, the one end of two fixed plates all with a side fixed connection of mounting panel, two fixed plates all are located the inboard of through-hole, the articulated shaft passes fixed plate, lever and fixed plate setting in proper order. Through the setting of this structure, two fixed plates pass through the articulated shaft and are connected with the tip of lever is articulated, and all set up the fixed plate in the inboard back of through-hole for behind the screw thread post inserted the through-hole, again at the in-process of screwing up lock nut, fixed plate, articulated shaft and lever can not cause the interference to lock nut's installation, very big convenience that has made things convenient for dismounting device and oval manhole cover dismouting.

In the dismounting device for the oval manhole cover of the high-pressure heater, the mounting plate is provided with the positioning hole, the fixing plate is arranged in the positioning hole in a penetrating mode, one end face of the fixing plate is flush with one side face of the mounting plate and the end of the fixing plate is welded with the mounting plate, the outer side wall of the fixing plate is provided with a circle of limiting flange, the limiting flange abuts against the other side face of the mounting plate and the limiting flange is welded with the mounting plate. Through the setting of this structure, the fixed plate is fixed firm on the mounting panel, and difficult fracture guarantees that manhole cover coupling assembling and lever hinge have very good stability.

In the dismounting device for the oval manhole cover of the high-pressure heater, the outer side wall of the oval manhole cover is provided with the positioning groove, one end of the threaded column is inserted into the positioning groove, and the threaded column is welded with the oval manhole cover. Through the setting of this structure, the screw thread post is fixed firm on oval manhole cover, and is difficult for the fracture, and then guarantees that oval manhole cover and mounting panel have better connection stability.

Compared with the prior art, the utility model discloses a dismounting device of oval manhole cover of high pressure feed water heater has following advantage: the mounting plate is fixed on the elliptical manhole cover through a plurality of bolts, the bolt holes are arranged on the mounting plate, and the bolt holes are arranged on the mounting plate; and lift off the back with oval manhole cover, unscrew the lock nut on the screw post in proper order, after all lock nuts all were lifted off, can lift oval manhole cover off from the mounting panel, this dismounting device and oval manhole cover adopt to dismantle connected mode, have solved the inconvenient problem of traditional dismounting device with the dismouting of manhole cover, have improved the convenience to the dismounting device maintenance.

Drawings

Fig. 1 is a schematic perspective view of the present invention.

Fig. 2 is a schematic view of the partial cross-sectional structure of the present invention.

In the figure, 1, a lever; 2. hinging a shaft; 3. an articulation member; 30. mounting a plate; 30a, positioning holes; 31. a fixing plate; 31a, a limiting flange; 4. a U-shaped groove; 5. a through hole; 6. an elliptical manhole cover; 60. a threaded post; 61. positioning a groove; 7. and locking the nut.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

As shown in fig. 1 and 2, the dismounting device for the oval manhole cover of the high-pressure heater comprises a lever 1 and a manhole cover connecting assembly arranged at the end part of the lever 1, wherein the manhole cover connecting assembly comprises a hinge shaft 2 and a hinge part 3 with a U-shaped groove 4, one end of the lever 1 is positioned in the U-shaped groove 4 of the hinge part 3, and the hinge part 3 is hinged at one end of the lever 1 through the hinge shaft 2; articulated elements 3 has mounting panel 30, a plurality of through-hole 5 has been seted up on mounting panel 30, oval manhole cover 6's lateral wall has a plurality of screw post 60,

screw post

60 and 5 one-to-one of through-hole, corresponding through-hole 5 is passed to the one end of screw post 60, and this end spiro union of screw post 60 has lock nut 7, in this embodiment, mounting panel 30 is circularly, articulated elements 3 still includes the fixed plate 31 of two symmetry settings, the one end of two fixed plates 31 all with mounting panel 30's a side fixed connection, articulated shaft 2 passes fixed plate 31 in proper order, lever 1 and fixed plate 31 set up. The threaded columns 60 on the elliptical manhole cover 6 are aligned with the through holes on the mounting plate 30, the mounting plate 30 is moved to enable the threaded columns 60 to be inserted into the through holes 5, the end part of each threaded column 60 is in threaded connection with a locking nut 7, the mounting plate 30 is clamped and positioned by the locking nut 7 and the elliptical manhole cover 6, multipoint positioning is adopted between the mounting plate 30 and the elliptical manhole cover 6, and therefore the mounting plate 30 and the elliptical manhole cover 6 are stably and firmly connected in the process of disassembling the elliptical manhole cover 6; after the oval manhole cover 6 is detached, the locking nuts 7 on the threaded columns 60 are sequentially unscrewed, and after all the locking nuts 7 are detached, the oval manhole cover 6 can be detached from the mounting plate 30.

As shown in fig. 1 and 2, in the present embodiment, all the through holes 5 and all the threaded columns 60 are annularly distributed, and the two fixing plates 31 are located inside the through holes 5. Two fixed plates 31 are hinged with the end part of the lever 1 through the hinge shaft 2, and the fixed plates 31 are all arranged at the inner side of the through hole 5, so that after the threaded column 60 is inserted into the through hole 5, the locking nut 7 is screwed up, the fixed plates 31, the hinge shaft 2 and the lever 1 cannot interfere with the installation of the locking nut 7, and the disassembly and assembly of the disassembly device and the elliptical manhole cover are greatly facilitated.

As shown in fig. 1 and 2, a positioning hole 30a is formed in the mounting plate 30, the fixing plate 31 is inserted into the positioning hole 30a, one end surface of the fixing plate 31 is flush with one side surface of the mounting plate 30 and the end of the fixing plate 31 is welded to the mounting plate 30, the outer side wall of the fixing plate 31 is provided with a circle of limiting flange 31a, the limiting flange 31a abuts against the other side surface of the mounting plate 30 and the limiting flange 31a is welded to the mounting plate 30, the fixing plate 31 is firmly fixed on the mounting plate 30 and is not easy to break, and the manhole cover connecting assembly is guaranteed to have very good stability when being hinged to the lever 1. The outer side wall of the elliptical manhole cover 6 is provided with a positioning groove 61, one end of the threaded column 60 is inserted into the positioning groove 61, the threaded column 60 is welded with the elliptical manhole cover 6, the threaded column 60 is firmly fixed on the elliptical manhole cover 6 and is not easy to break, and therefore the elliptical manhole cover 6 and the mounting plate 30 are guaranteed to have good connection stability.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Claims

1. The dismounting device for the oval manhole cover of the high-pressure heater comprises a lever (1) and a manhole cover connecting assembly arranged at the end part of the lever (1), and is characterized in that the manhole cover connecting assembly comprises a hinged shaft (2) and a hinged piece (3) with a U-shaped groove (4), one end of the lever (1) is positioned in the U-shaped groove (4) of the hinged piece (3), and the hinged piece (3) is hinged at one end of the lever (1) through the hinged shaft (2); articulated elements (3) have mounting panel (30), a plurality of through-hole (5) have been seted up on mounting panel (30), the lateral wall of oval manhole cover (6) has a plurality of screw thread post (60), screw thread post (60) and through-hole (5) one-to-one, corresponding through-hole (5) are passed to the one end of screw thread post (60) to this end spiro union of screw thread post (60) has lock nut (7).

2. The device for removing oval manhole covers of high-pressure heaters in accordance with claim 1, wherein all the through holes (5) and all the threaded columns (60) are annularly distributed.

3. The dismounting device of the oval manhole cover of the high-pressure heater in claim 2, wherein the mounting plate (30) is circular, the hinge member (3) further comprises two symmetrically arranged fixing plates (31), one end of each fixing plate (31) is fixedly connected with one side surface of the mounting plate (30), the two fixing plates (31) are arranged at the inner side of the through hole (5), and the hinge shaft (2) is sequentially arranged through the fixing plates (31), the lever (1) and the fixing plates (31).

4. The dismounting device of the oval manhole cover of the high-pressure heater according to claim 3, wherein the mounting plate (30) is provided with a positioning hole (30a), the fixing plate (31) is inserted into the positioning hole (30a), one end surface of the fixing plate (31) is flush with one side surface of the mounting plate (30) and the end of the fixing plate (31) is welded with the mounting plate (30), the outer side wall of the fixing plate (31) is provided with a circle of limiting flange (31a), the limiting flange (31a) abuts against the other side surface of the mounting plate (30) and the limiting flange (31a) is welded with the mounting plate (30).

5. The disassembling device for the oval manhole cover of the high-pressure heater according to claim 1, wherein a positioning groove (61) is formed on the outer side wall of the oval manhole cover (6), one end of the threaded column (60) is inserted into the positioning groove (61) and the threaded column (60) is welded with the oval manhole cover (6).