CN220722218U - Manhole ventilation protection device - Google Patents
Manhole ventilation protection device Download PDFInfo
- Publication number
- CN220722218U CN220722218U CN202321848357.6U CN202321848357U CN220722218U CN 220722218 U CN220722218 U CN 220722218U CN 202321848357 U CN202321848357 U CN 202321848357U CN 220722218 U CN220722218 U CN 220722218U
- Authority
- CN
- China
- Prior art keywords
- manhole
- protection device
- rod
- cross bar
- rod body
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000009423 ventilation Methods 0.000 title claims abstract description 26
- 230000001681 protective effect Effects 0.000 claims abstract description 22
- 230000002093 peripheral effect Effects 0.000 claims description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002574 poison Substances 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Landscapes
- Underground Structures, Protecting, Testing And Restoring Foundations (AREA)
Abstract
The utility model relates to the technical field of protection accessories of large container manholes, in particular to a manhole ventilation protection device, which comprises: the fixing frame and the protective net are respectively clamped inside and outside the manhole; the lead screw is including connecting the first body of rod between protection network and mount and being located the outside second body of rod of protection network, is equipped with the locking device who is used for preventing personnel's mistake income on the second body of rod. The utility model discloses a lead screw is connected the mount that is located the manhole inside respectively and outside protection network to set up the locking device who is used for preventing personnel's mistake income on the second body of rod that is located the protection network outside of lead screw. Thereby solving the problem that manholes with different thicknesses naturally ventilate and need special personnel to watch.
Description
Technical Field
The utility model relates to the technical field of protection accessories of large container manholes, in particular to a manhole ventilation protection device.
Background
In a thermal power plant, a plurality of large-scale devices are provided with small channels for personnel to enter to carry out maintenance operation, the channel openings are provided with round or square small openings, the inlet and outlet are commonly called manhole doors, and the manhole doors are arranged on boilers, high-pressure heaters, condensers and the like. Because the equipment is relatively isolated from the outside, the entrance is narrow, natural ventilation is poor, and people are easy to poison and suffocate after entering the equipment. In order to avoid the occurrence of the above phenomenon, the conventional operation is to open a manhole for ventilation, and for safety, a special person is required to watch, preventing personnel from entering or foreign matters from entering the inside of the equipment. This increases the labor costs and the operational risks to some extent.
Disclosure of Invention
In order to solve at least one technical problem, the utility model provides a manhole ventilation protection device, which is connected with a fixing frame and an external protection net respectively positioned in a manhole through a screw rod, and a locking device for preventing personnel from entering by mistake is arranged on a second rod body positioned outside the protection net of the screw rod. Thereby solving the problem that the manhole is naturally ventilated and needs to be attended by a special person.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a manhole ventilation protection device comprising: the fixing frame and the protective net are respectively clamped inside and outside the manhole; the screw rod comprises a first rod body connected between the protective net and the fixed frame and a second rod body positioned outside the protective net, and a locking device for preventing personnel from entering by mistake is arranged on the second rod body.
Preferably, the locking device is a mechanical lock, the second rod body is provided with a plurality of lock holes along the length direction, and the mechanical lock is locked with the second rod body through the lock holes.
Preferably, the mechanical lock is provided with a key or code.
Preferably, the fixing frame comprises a cross rod assembly with adjustable length and vertical rods positioned on two sides of the cross rod assembly for supporting.
Preferably, the cross bar assembly comprises at least one first cross bar and a second cross bar sleeved outside the first cross bar, and the first cross bar and the second cross bar are both provided with adjusting holes and are fixed through bolts.
Preferably, a first mounting hole matched with the first rod body is formed in the middle of the first cross rod, and the first rod body is fixed with the first cross rod through a nut.
Preferably, the protection net comprises a wire mesh and a frame positioned on the periphery of the wire mesh.
Preferably, clamping pieces are arranged on two sides of the center of the silk screen, and a second mounting hole matched with the screw rod is formed in the center of each clamping piece.
Preferably, the wire mesh is a stainless steel wire mesh.
Compared with the prior art, the utility model has the following beneficial effects:
the utility model provides a manhole ventilation protection device, which is characterized in that a fixing frame and an external protection net which are respectively positioned in a manhole are connected through a screw rod, and a locking device for preventing personnel from entering by mistake is arranged on a second rod body positioned outside the protection net of the screw rod. Thereby realizing the safe natural ventilation of manholes with different thicknesses under the unattended condition.
In addition, through setting up the horizontal pole subassembly of adjustable length for the mount can be used for the manhole of multiple specification to be fixed.
Drawings
FIG. 1 is a schematic view of a manhole ventilation protection device;
FIG. 2 is an enlarged view of FIG. 1 at A;
FIG. 3 is a front view of a manhole ventilation guard;
in the figure: 1. a fixing frame; 11. a first cross bar; 12. a second cross bar; 13. a vertical rod; 14. an adjustment aperture; 2. a protective net; 21. a silk screen; 22. a frame; 3. a screw rod; 31. a first rod body; 32. a second rod body; 321. a lock hole; 4. a mechanical lock; 5. and (5) clamping the sheet.
Detailed Description
In order that those skilled in the art will better understand the technical solutions of the present utility model, the following description will clearly and completely describe the technical solutions of the embodiments of the present utility model with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are only some embodiments of the present utility model, not all embodiments of the present utility model.
Referring to fig. 1-3, a manhole ventilation protection device includes: the fixing frame 1, the protective net 2 and the screw rod 3 for connecting the fixing frame 1 and the protective net 2 are respectively clamped inside and outside the manhole; the screw rod 3 comprises a first rod body 31 connected between the protective net 2 and the fixing frame 1 and a second rod body 32 positioned outside the protective net 2, and a locking device for preventing personnel from entering by mistake is arranged on the second rod body 32.
The utility model provides a manhole ventilation protection device, which is characterized in that a fixing frame 1 and an external protection net 2 which are respectively positioned in a manhole are connected through a screw rod 3, and a locking device for preventing personnel from entering by mistake is arranged on a second rod body 32 of the screw rod 3 positioned outside the protection net 2. Thereby realizing the safe natural ventilation of manholes with different thicknesses under the unattended condition.
It can be understood that by adjusting the relative distance between the fixing frame 1 and the protective net 2 on the screw rod 3, manholes with different thicknesses can be adapted.
As shown in fig. 2, in order to improve the safety of the device and avoid personnel from entering by mistake, the locking device may be a mechanical lock 4, and the second rod 32 is provided with a plurality of locking holes 321 along the length direction, and the mechanical lock 4 is locked with the second rod 32 through the locking holes 321.
It will be appreciated that the mechanical lock 4 is provided with several keys or a set of codes for the access of different staff members.
As shown in fig. 1, the fixing frame 1 includes a cross bar assembly with adjustable length and vertical bars 13 located at both sides of the cross bar assembly for supporting.
It should be noted that the adjustable cross bar assembly may include at least one first cross bar 11 and a second cross bar 12 sleeved outside the first cross bar 11, where the first cross bar 11 and the second cross bar 12 are both provided with an adjusting hole 14 and are fixed by bolts.
In this embodiment, square steel with different specifications and capable of being mutually sleeved is adopted. The middle part of the first cross bar 11 is provided with a first mounting hole (not shown in the figure) adapted to the first rod 31, and the first rod 31 is fixed to the first cross bar 11 by a nut (the threaded part of the screw 3 is not shown in the figure). Obviously, the fixing manner between the first rod 31 and the first cross bar 11 may be a pin type fixing, which is not limited in this application.
Obviously, the vertical rod 13 may also be provided with an adjustable length in order to be able to better adapt to the height of the manhole.
As shown in fig. 1 and 3, the protection net 2 includes a wire net 21 and a frame 22 located at the peripheral side of the wire net 21.
Among them, the wire mesh 21 in the present embodiment adopts a stainless steel wire mesh 21 in view of durability and firmness, and conventional manholes are mostly circular or rectangular according to different shapes of manholes, and a constructor can change the shape of the protection net 2 to adapt to the shape of the manholes. Obviously, the rectangular protective net 2 has better adaptability and is relatively convenient to manufacture.
In order to facilitate the fixation of the center of the screw rod 3 and the center of the protective screen 2, two sides of the center of the screen 21 are provided with clamping pieces 5, and the center of each clamping piece 5 is provided with a second mounting hole (not shown in the figure) which is matched with the screw rod 3.
It will be appreciated that the clip 5 may be fixed to the protection net 2 by welding or by fastening with a split bolt.
The installation process of the device comprises the following steps:
first, according to the specification of manhole, adjust the length of the first horizontal pole of mount and second horizontal pole in order to adapt to the width of manhole to with its fixed placement in the manhole is inside, again with lead screw and first horizontal pole fixed.
Secondly, fixing the protective net outside the manhole through a screw rod, and adjusting the distance between the protective net and the fixed frame to enable the distance between the inner side of the protective net and the fixed frame to be equal to the thickness of the manhole.
Finally, screwing the nut until the protective net and the fixed frame are relatively tensioned and fixed; and then the mechanical lock is locked in a lock hole close to the protective net, so that the device is installed.
The utility model provides a manhole ventilation protection device, which is characterized in that a fixing frame and an external protection net which are respectively positioned in a manhole are connected through a screw rod, and a locking device for preventing personnel from entering by mistake is arranged on a second rod body positioned outside the protection net of the screw rod. Thereby realizing the safe natural ventilation of manholes with different thicknesses under the unattended condition.
In addition, through setting up the horizontal pole subassembly of adjustable length for the mount can be used for the manhole of multiple specification to be fixed.
While the foregoing is directed to embodiments of the present utility model, it will be appreciated by those skilled in the art that various modifications and changes can be made without departing from the principles of the present utility model, and such modifications and changes should be considered as being within the scope of the present application.
Claims (9)
1. A manhole ventilation protection device, comprising: the device comprises a fixing frame (1), a protective net (2) and a screw rod (3) for connecting the fixing frame (1) and the protective net (2), wherein the fixing frame (1) and the protective net (2) are respectively clamped inside and outside a manhole; the screw rod (3) comprises a first rod body (31) connected between the protective net (2) and the fixing frame (1) and a second rod body (32) positioned outside the protective net (2), and a locking device for preventing personnel from entering by mistake is arranged on the second rod body (32).
2. The manhole ventilation protection device according to claim 1, wherein the locking device is a mechanical lock (4), the second rod body (32) is provided with a plurality of lock holes (321) along the length direction, and the mechanical lock (4) is locked with the second rod body (32) through the lock holes (321).
3. A manhole ventilation protection device according to claim 2, characterized in that the mechanical lock (4) is provided with a key or code.
4. A manhole ventilation protection device according to claim 1, characterized in that the fixing frame (1) comprises a cross bar assembly with adjustable length and vertical bars (13) for supporting at both sides of the cross bar assembly.
5. The manhole ventilation protection device according to claim 4, wherein the cross bar assembly comprises at least one first cross bar (11) and a second cross bar (12) sleeved outside the first cross bar (11), and the first cross bar (11) and the second cross bar (12) are provided with adjusting holes (14) and are fixed through bolts.
6. The manhole ventilation protection device according to claim 5, wherein a first mounting hole adapted to the first rod body (31) is provided in the middle of the first cross rod (11), and the first rod body (31) is fixed to the first cross rod (11) through a nut.
7. A manhole ventilation protection device according to claim 1, characterized in that the protection net (2) comprises a wire mesh (21) and a frame (22) located at the peripheral side of the wire mesh (21).
8. The manhole ventilation protection device according to claim 7, wherein clamping pieces (5) are arranged on two sides of the center of the silk screen (21), and a second mounting hole matched with the screw rod (3) is formed in the center of each clamping piece (5).
9. A manhole ventilation protection device according to claim 8, characterized in that the wire mesh (21) is a stainless wire mesh (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321848357.6U CN220722218U (en) | 2023-07-13 | 2023-07-13 | Manhole ventilation protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321848357.6U CN220722218U (en) | 2023-07-13 | 2023-07-13 | Manhole ventilation protection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220722218U true CN220722218U (en) | 2024-04-05 |
Family
ID=90486225
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321848357.6U Active CN220722218U (en) | 2023-07-13 | 2023-07-13 | Manhole ventilation protection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220722218U (en) |
-
2023
- 2023-07-13 CN CN202321848357.6U patent/CN220722218U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN220722218U (en) | Manhole ventilation protection device | |
| CN211694036U (en) | Support device suitable for forestry field monitoring equipment is fixed | |
| CN219421286U (en) | Outdoor cabinet | |
| CN209876459U (en) | Wall-mounted security protection supervisory equipment convenient to installation | |
| CN206516916U (en) | A kind of electric power cabinet being easily installed | |
| CN214092269U (en) | Special variable frequency control cabinet of water pump | |
| CN214428995U (en) | Outdoor distribution box installing support | |
| CN212034530U (en) | Electrical cabinet convenient to disassemble | |
| CN210517357U (en) | Electric control device suitable for it is outdoor | |
| CN208024091U (en) | A kind of environment-friendly type municipal administration safety device | |
| CN207378477U (en) | A kind of safe grating | |
| CN210858197U (en) | Electric iron tower capable of preventing bird damage | |
| CN220228538U (en) | Monitoring equipment and intelligent security monitoring system | |
| CN219451700U (en) | Assembled guardrail | |
| CN217056963U (en) | Fixing device | |
| CN220042753U (en) | Electrical cabinet top cover with adjustable protection level and convenient maintenance | |
| CN218178547U (en) | A receiving equipment protector for signal processing | |
| CN220190184U (en) | Easy-to-disassemble low-voltage power safety protection disc cabinet | |
| CN211820098U (en) | Fan net cover fastening device | |
| CN216076241U (en) | External protector of scaffold | |
| CN207530483U (en) | A kind of cable distribution box being easily installed in upright bar | |
| CN219062872U (en) | Mounting structure and building site supervisory equipment | |
| CN215911819U (en) | Protection type high-low voltage prepackage type transformer substation | |
| CN217537789U (en) | Simple operation platform for net rack construction | |
| CN219349917U (en) | High-frequency light-weight electronic transformer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |