CN215157691U - Manhole cover with structure for preventing weld joint from corrosion and cracking - Google Patents
Manhole cover with structure for preventing weld joint from corrosion and cracking Download PDFInfo
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- CN215157691U CN215157691U CN202022402681.8U CN202022402681U CN215157691U CN 215157691 U CN215157691 U CN 215157691U CN 202022402681 U CN202022402681 U CN 202022402681U CN 215157691 U CN215157691 U CN 215157691U
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Abstract
The utility model relates to a manhole cover technical field just discloses a welding seam corrodes fracture structure manhole cover, including the manhole cover body. This prevent weld corrosion cracking structure manhole cover, through setting up the manhole cover body, wholly adopt the whole suppression shaping of panel, the inner circle uses the welding flange who takes three degrees oblique angles to do the inside lining and is convenient for adorn the sealing washer, and the manhole cover body by whole panel beating wraps the welding flange, manhole cover body inner circle and holistic mouth limit all weld, utilize the structural design back of this design, when the transportation medium, even if weld seam department can produce the corruption, but the manhole cover body who plays the atress adopts overall structure, welding flange and weld seam department can not receive pressure (only pressurized then is for playing sealed effect, the power of fastener locking), consequently the phenomenon that the apron was pushed away to the top appears in the welding seam under the condition of corrosion cracking that prevents that the design can be fine, the security is higher, long service life's effect has been reached.
Description
Technical Field
The utility model relates to a manhole cover technical field specifically is a prevent weld corrosion cracking structure manhole cover.
Background
The manhole cover is a general term for a cover plate and its fixing accessories having sealing performance installed on the manhole. The manhole cover can be divided into a protruding type and a buried type according to whether the manhole cover is higher than the surface of the opening after being installed, wherein the protruding type is more in line with the requirement of ship navigation.
At present, manhole covers on the market are welded by adopting cover plates formed by pressing outer ring flanges and metal plates, welding seams are exposed outside, the welding seams of inner rings contact goods, and after the manhole covers are used for a long time, the welding seams are corroded, so that the structural strength is influenced, safety accidents occur, the service life is reduced, and the manhole covers are not suitable for use, so that the manhole covers with the structure for preventing the welding seams from being corroded and cracked are provided to solve the problems.
SUMMERY OF THE UTILITY MODEL
Technical problem to be solved
The utility model provides a not enough to prior art, the utility model provides a prevent that weld joint corrodes fracture structure manhole cover possesses advantages such as long service life, has solved manhole cover on the market and has adopted outer lane flange and plate pressing forming's apron to weld, and the welding seam exposes outside, and inner circle welding seam contact goods, the long time back of using, the phenomenon of corroding can appear in the welding seam play to lead to structural strength to cause the influence, take place the incident, reduce life's problem.
(II) technical scheme
In order to realize the purpose of the service life, the utility model provides a following technical scheme: the utility model provides a prevent that weld joint corrodes structure manhole cover that ftractures, includes the manhole cover body, the inboard welding of manhole cover body has welding flange, the seal ring groove has been seted up to welding flange's bottom, the equal fixed mounting in left and right sides of manhole cover body has the journal stirrup that quantity is two, and the equal fixed mounting in the back of the body one side of the back of the body of left and right sides journal stirrup has supplementary piece of hanging.
Preferably, the middle part of the top of the manhole cover body is an arc surface, and the height of the middle part of the manhole cover body is greater than the height of the left side and the right side of the manhole cover body.
Preferably, the welding flange is annular, and the outer diameter of the welding flange is equal to the inner diameter of the manhole cover body.
Preferably, the seal ring groove is annular in shape, and the width of the top of the seal ring groove is slightly larger than that of the bottom of the seal ring groove.
Preferably, the cross section of the support lug is in a right trapezoid shape, and the width of the top of the support lug is larger than that of the bottom of the support lug.
Preferably, the front side of the auxiliary hanging block is provided with a hanging hole extending to the rear side of the auxiliary hanging block, and the diameter of the hanging hole is one third of the height of the auxiliary hanging block.
(III) advantageous effects
Compared with the prior art, the utility model provides a prevent weld corrosion cracking structure manhole cover possesses following beneficial effect:
the manhole cover with the structure for preventing the weld joint from being corroded and cracked is characterized in that a manhole cover body is arranged, the whole manhole cover body is integrally formed by pressing a plate, an inner ring is lined with a welding flange with a three-degree oblique angle to facilitate installation of a sealing ring, the welding flange is wrapped by the integral sheet metal manhole cover body, the inner ring of the manhole cover body and the integral opening edge are welded, after the structural design of the manhole cover is utilized, even if the welding joint is corroded during medium transportation, the stressed manhole cover body adopts an integral structure, the welding flange and the welding joint cannot bear pressure (the only pressure is used for playing a sealing role, and the fastening piece locks), so that the phenomenon that the cover plate is jacked and splashed under the condition that the welding joint is corroded and cracked can be well prevented by design, the safety is higher, the working time can be increased, meanwhile, the manhole cover can be hoisted by utilizing an auxiliary hoisting block, and the installation and transportation are more convenient, the effect of long service life has been reached.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
In the figure: the manhole cover comprises a manhole cover body 1, a welding flange 2, a sealing ring groove 3, a support lug 4 and an auxiliary hanging block 5.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1, a manhole cover with a structure for preventing corrosion cracking of a welded seam comprises a manhole cover body 1, wherein the middle part of the top of the manhole cover body 1 is a cambered surface, the height of the middle part of the manhole cover body 1 is greater than the height of the left side and the right side of the manhole cover body, a welding flange 2 is welded on the inner side of the manhole cover body 1, the welding flange 2 is annular, the outer diameter of the welding flange 2 is equal to the inner diameter of the manhole cover body 1, a sealing ring groove 3 is formed in the bottom of the welding flange 2, the sealing ring groove 3 is annular, the width of the top of the sealing ring groove 3 is slightly greater than the width of the bottom of the sealing ring groove 3, two support lugs 4 are fixedly arranged on the left side and the right side of the manhole cover body 1, the cross section of each support lug 4 is in a right trapezoid shape, the width of the top of each support lug 4 is greater than the width of the bottom of the support lug, auxiliary hanging blocks 5 are fixedly arranged on the opposite sides of the support lugs 4 on the left side and the right side, the front side of the auxiliary hanging block 5 is provided with a hanging hole extending to the rear side thereof, and the diameter of the hanging hole is one third of the height of the auxiliary hanging block 5.
In conclusion, the manhole cover with the structure for preventing the corrosion and the cracking of the welding seam is characterized in that the manhole cover body 1 is arranged, the whole manhole cover is integrally pressed and molded by adopting a plate, the inner ring is lined with the welding flange 2 with a three-degree oblique angle so as to be convenient for installing a sealing ring, the welding flange 2 is wrapped by the integral sheet metal manhole cover body 1, and the inner ring of the manhole cover body 1 and the integral opening edge are welded together, after the structural design of the manhole cover is utilized, even if the welding seam is corroded during medium transportation, the stressed manhole cover body 1 adopts an integral structure, the welding flange 2 and the welding seam are not stressed (the only stress is the force for sealing and locking a fastener), so that the phenomenon that the cover plate is jacked to fly under the condition that the welding seam is corroded and cracked can be well prevented by design, the manhole cover is higher in safety, the working time can be increased, and meanwhile, the manhole cover can be hoisted by utilizing the auxiliary hoisting block 5, the manhole cover has the advantages that the installation and the transportation are convenient, the effect of long service life is achieved, the problems that the cover plate formed by pressing an outer ring flange and a metal plate is adopted for welding the manhole cover on the market, the welding line is exposed outside, the welding line of the inner ring is in contact with goods, and after the manhole cover is used for a long time, the welding line is corroded, so that the structural strength is influenced, safety accidents occur, and the service life is shortened are solved.
It is to be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. The utility model provides a prevent weld corrosion cracking structure manhole cover, includes manhole cover body (1), its characterized in that: the manhole cover is characterized in that a welding flange (2) is welded on the inner side of the manhole cover body (1), a sealing ring groove (3) is formed in the bottom of the welding flange (2), two support lugs (4) are fixedly mounted on the left side and the right side of the manhole cover body (1), and an auxiliary hanging block (5) is fixedly mounted on one side, opposite to each other, of each support lug (4) on the left side and the right side.
2. The structural manhole cover of claim 1, wherein: the middle part of the top of the manhole cover body (1) is an arc surface, and the height of the middle part of the manhole cover body (1) is larger than the height of the left side and the right side of the manhole cover body.
3. The structural manhole cover of claim 1, wherein: the welding flange (2) is annular, and the outer diameter of the welding flange (2) is equal to the inner diameter of the manhole cover body (1).
4. The structural manhole cover of claim 1, wherein: the shape of the seal ring groove (3) is annular, and the width of the top of the seal ring groove (3) is slightly larger than that of the bottom of the seal ring groove.
5. The structural manhole cover of claim 1, wherein: the cross section of the support lug (4) is in a right-angle trapezoid shape, and the width of the top of the support lug (4) is larger than that of the bottom of the support lug.
6. The structural manhole cover of claim 1, wherein: the front side of the auxiliary hanging block (5) is provided with a hanging hole extending to the rear side of the auxiliary hanging block, and the diameter of the hanging hole is one third of the height of the auxiliary hanging block (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022402681.8U CN215157691U (en) | 2020-10-26 | 2020-10-26 | Manhole cover with structure for preventing weld joint from corrosion and cracking |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022402681.8U CN215157691U (en) | 2020-10-26 | 2020-10-26 | Manhole cover with structure for preventing weld joint from corrosion and cracking |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215157691U true CN215157691U (en) | 2021-12-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022402681.8U Active CN215157691U (en) | 2020-10-26 | 2020-10-26 | Manhole cover with structure for preventing weld joint from corrosion and cracking |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215157691U (en) |
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2020
- 2020-10-26 CN CN202022402681.8U patent/CN215157691U/en active Active
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