CN202788905U - Air duct protective cover - Google Patents
Air duct protective cover Download PDFInfo
- Publication number
- CN202788905U CN202788905U CN201220371646.7U CN201220371646U CN202788905U CN 202788905 U CN202788905 U CN 202788905U CN 201220371646 U CN201220371646 U CN 201220371646U CN 202788905 U CN202788905 U CN 202788905U
- Authority
- CN
- China
- Prior art keywords
- air duct
- cover
- protective cover
- left cover
- end shield
- 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.)
- Expired - Fee Related
Links
- 230000001681 protective effect Effects 0.000 title claims abstract description 34
- 238000004880 explosion Methods 0.000 claims description 9
- 238000009423 ventilation Methods 0.000 abstract description 9
- 238000005422 blasting Methods 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 4
- 238000010276 construction Methods 0.000 abstract description 3
- 239000003517 fume Substances 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 239000011435 rock Substances 0.000 abstract 2
- 230000000903 blocking effect Effects 0.000 abstract 1
- 238000007865 diluting Methods 0.000 abstract 1
- 238000010521 absorption reaction Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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Abstract
The utility model relates to an air duct protective cover, in particular to an air duct protective cover blocking blasting fly rocks and belongs to the filed of underground construction ventilation and safety. The air duct protective cover comprises a left cover (5), a right cover (6) and an end cover (8), wherein the left cover (5) and the right cover (6) are sleeved on an outer wall of an air duct close to an air duct air outlet (1) in a combined mode, and the end cover (8) is a net structure, does not block airflows and can protect the air duct. The air duct protective cover has the protective effect on the air duct, the damage problem of fly rocks on the air duct when a working face blasts is solved, the air outlet (pressing-in type) or an air inlet (sucking-out type) of the air duct can be arranged at a place, a distance between the place and the working face is not larger than an effective shooting range (pressing-in type) or an effective sucking range (sucking-out type), and the ventilation effect is ensured. On the other hand, air duct protective cover does not influence the airflows which is an important aspect for quickly diluting and removing blasting fume, guaranteeing safety production and improving the labor productivity.
Description
Technical field
The utility model relates to a kind of air duct protective cover, especially stops the air duct protective cover of blasting flyrock.Belonging to underground construction ventilates and security fields.
Background technology
The dead face driving of underground construction often will adopt booster to ventilate, and booster ventilates and usually is comprised of ventilation fan and air duct.That its draft type has usually is forced, pull-out type and hybrid etc.For the ventilation effect that obtains, air duct air outlet (forced) or intake (pull-out type) must be not more than effective range (forced) or the effective absorption distance (pull-out type) of air duct to the distance of work plane.But the distance of effective range (forced) or effective absorption distance (pull-out type) is all shorter, especially the distance of effective absorption distance (pull-out type) is shorter, the casting distance of slungshot is short during usually all than explosion, and this just means that air duct unavoidably can be subject to the attack of slungshot.In order to make air duct avoid the infringement of slungshot, people often are installed in air duct the place away from work plane, have reduced widely ventilation effect, can't dilute quickly and effectively blasting fume, the dust of getting rid of work plane, have serious accident potential.Therefore, must take effective air duct safeguard procedures, improve the reliability that booster ventilates.The air duct protective cover that the utility model provides, the air duct that booster is ventilated exempts from the infringement of slungshot, does not hinder distinguished and admirable unimpeded, stuffy effective simultaneously.Guarantee safe production.
Summary of the invention
The utility model provides a kind of novel air duct protective cover.Before the explosion, on the close air duct of work plane one end, it can stop slungshot, makes air duct exempt from damage with the air duct shielding cover, does not affect again distinguished and admirable flowing, and ensures booster ventilation normal operation.
Structure of the present utility model is: comprise left cover 5, right cover 6 and end shield 8; left cover 5 and 6 combinations of right cover are enclosed within air duct near the outer wall of air duct 1 air outlet; end shield 8 is fixed on left cover 5 and the right cover 6 end near air duct 1 air outlet; end shield 8 is net structure; neither hinder distinguished and admirablely, can protect air duct again.
The diagonal of the single grid maximum of the net structure of described end shield 8 is less than the minimum diameter of the slungshot of explosion.
Described left cover 5 is identical with the structure of right cover 6, and be net structure, quality that can alleviator, keep firmly knot, all there is whippletree in the edge of left cover 5 or right cover 6 end in axial direction, left cover 5 be connected cover 6 and connect cross bars by hook 3, the edge of left cover 5 or right cover 6 other end in axial direction is by transverse axis 13 chain connections.As shown in Figure 3, be whippletree A2 on the left cover 5, be whippletree B7 on the right cover.
There is clasp 11 at described end shield 8 edges, and clasp 11 is fixed on end shield 8 on left cover 5 and the right cover 6, and left cover 5 and right cover 6 can be opened around transverse axis 13 closed, are easy for installation and removal.
The cross bar 2 of described left cover 5 or the cross bar of the right cover 67 hinged bars 12 that overhang overhang bar 12 and are fixed on the horizontal hanging stick 4 on the wall 9, are firmly linked with the air duct protective cover.
During explosion, the air duct protective cover has stopped the slungshot from work plane 10, prevents its damage air duct 1; During forced ventilation, fresh distinguished and admirablely flow out from air duct 1 enters work plane 10, and dirty wind is discharged by the tunnel; During exhaust ventilation, fresh distinguished and admirablely enter from the tunnel, flushing work plane 10, dirty wind is drained by air duct 1.
Along with constantly pushing ahead of work plane 10, air duct 1 also constantly prolongs forward.Correspondingly, the position of wall 9 top rail hanging sticks 4 also will arrange forward, advances so that the air duct protective cover is followed air duct 1, plays effective protective action.
The beneficial effects of the utility model are, by the protective action of air duct protective cover to air duct, slungshot is to the infringement problem of air duct when having solved the work plane explosion, air duct air outlet (forced) or air intake vent (pull-out type) can be arranged in the place that is not more than its effective range (forced) or effective absorption distance (pull-out type) apart from work plane, guarantee ventilation effect.On the other hand, the air duct protective cover does not affect distinguished and admirable flowing, and is that dilution is got rid of blasting fume, guaranteed safe production the importance of raising labour productivity rapidly yet.The utility model is simple in structure, and is easy to use, safeguards easily.
Description of drawings
Fig. 1 is the front elevational schematic of the utility model air duct protective cover in the tunnel;
Fig. 3 is the end shield schematic diagram of the utility model air duct protective cover;
Fig. 2 is that schematic diagram is looked on the left side of the utility model air duct protective cover in the tunnel.
Each label is among the figure: 1-air duct; 2-whippletree A; 3-hook; 4-horizontal hanging stick; 5-left cover; 6-right cover; 7-whippletree B; 8-end shield; 9-wall; 10-work plane; 11-clasp; 12-overhang bar; 13-transverse axis.
The specific embodiment
Below in conjunction with embodiment and accompanying drawing air duct protective cover described in the utility model is further described, but the utility model is not limited to the following stated scope.
Embodiment 1: the structure of the air duct protective cover of present embodiment is: as shown in Figure 1; comprise left cover 5, right cover 6 and end shield 8; left cover 5 and 6 combinations of right cover are enclosed within air duct near the outer wall of air duct 1 air outlet; end shield 8 is fixed on left cover 5 and the right cover 6 end near air duct 1 air outlet; end shield 8 is net structure; neither hinder distinguished and admirablely, can protect air duct again.Shown in Fig. 2 and 3, the diagonal of the single grid maximum of the net structure of end shield 8 is less than the minimum diameter of the slungshot of explosion.Left cover 5 is identical with the structure of right cover 6, and be net structure, quality that can alleviator, keep firmly solid, there are whippletree A2 or whippletree B7 in the edge of left cover 5 or right cover 6 end in axial direction, left cover 5 be connected cover 6 and connect whippletree A2 and be fixedly connected with whippletree B7 by linking up with 3, the edge of left cover 5 or right cover 6 other end in axial direction is by transverse axis 13 chain connections.There is clasp 11 at the edge of end shield 8, and clasp 11 is fixed on end shield 8 on left cover 5 and the right cover 6, and left cover 5 and right cover 6 can be opened around transverse axis 13 closed, are easy for installation and removal.The cross bar 2 of left cover 5 or the cross bar of the right cover 67 hinged bars 12 that overhang overhang bar 12 and are fixed on the horizontal hanging stick 4 on the wall 9, are firmly linked with the air duct protective cover.
Embodiment 2: the structure of the air duct protective cover of present embodiment is: as shown in Figure 1; comprise left cover 5, right cover 6 and end shield 8; left cover 5 and 6 combinations of right cover are enclosed within air duct near the outer wall of air duct 1 air outlet; end shield 8 is fixed on left cover 5 and the right cover 6 end near air duct 1 air outlet; end shield 8 is net structure; neither hinder distinguished and admirablely, can protect air duct again.Shown in Fig. 2 and 3, the diagonal of the single grid maximum of the net structure of end shield 8 is less than the minimum diameter of the slungshot of explosion.Left cover 5 is identical with the structure of right cover 6, and be net structure, quality that can alleviator, keep firmly solid, the whippletree A2 of edge or the whippletree B7 of left cover 5 or right cover 6 end in axial direction, left cover 5 be connected cover 6 and connect whippletree A2 and be fixedly connected with whippletree B7 by linking up with 3, the edge of left cover 5 or right cover 6 other end in axial direction is by transverse axis 13 chain connections.There is clasp 11 at the edge of end shield 8, and clasp 11 is fixed on end shield 8 on left cover 5 and the right cover 6, and left cover 5 and right cover 6 can be opened around transverse axis 13 closed, are easy for installation and removal.
Embodiment 3: the structure of the air duct protective cover of present embodiment is: comprise left cover 5, right cover 6 and end shield 8; left cover 5 and 6 combinations of right cover are enclosed within air duct near the outer wall of air duct 1 air outlet; end shield 8 is fixed on left cover 5 and the right cover 6 end near air duct 1 air outlet; end shield 8 is net structure; neither hinder distinguished and admirablely, can protect air duct again.The diagonal of the single grid maximum of the net structure of end shield 8 is less than the minimum diameter of the slungshot of explosion.Left cover 5 is identical with the structure of right cover 6, and be net structure, quality that can alleviator, keep firmly solid, the whippletree A2 of edge or the whippletree B7 of left cover 5 or right cover 6 end in axial direction, left cover 5 be connected cover 6 and connect whippletree A2 and be fixedly connected with whippletree B7 by linking up with 3, the edge of left cover 5 or right cover 6 other end in axial direction is by transverse axis 13 chain connections.
Claims (7)
1. air duct protective cover, it is characterized in that: comprise left cover (5), right cover (6) and end shield (8), left cover (5) and right cover (6) combination are enclosed within air duct near the outer wall of air duct (1) air outlet, end shield (8) is fixed on left cover (5) and the right cover (6) near an end of air duct (1) air outlet, and end shield (8) is net structure.
2. air duct protective cover according to claim 1, it is characterized in that: the net structure of described end shield (8) is that the diagonal of single grid maximum is less than the minimum diameter of the slungshot of explosion.
3. air duct protective cover according to claim 1, it is characterized in that: described left cover (5) is identical with the structure of right cover (6), and is net structure; Left cover (5) or right cover (6) the in axial direction edge of an end all have whippletree, connect cross bar by hook (3), and the edge of left cover (5) or right cover (6) other end in axial direction is by transverse axis (13) chain connection.
4. each described air duct protective cover according to claim 1～3, it is characterized in that: there is clasp (11) at the edge of described end shield (8), and clasp (11) is fixed on end shield (8) on left cover (5) and the right cover (6).
5. air duct protective cover according to claim 4, it is characterized in that: there is clasp (11) at the edge of described end shield (8), and clasp (11) is fixed on end shield (8) on left cover (5) and the right cover (6).
The cross bar A(2 of described left cover (5)) or the hinged bar (12) that overhangs of the cross bar B (7) of right cover (6) 6. according to claim 1 or 3 described air duct protective covers, it is characterized in that:, overhang on the horizontal hanging stick (4) that bar (12) is fixed on wall (9).
The cross bar A(2 of described left cover (5)) or the hinged bar (12) that overhangs of the cross bar B (7) of right cover (6) 7. air duct protective cover according to claim 4 is characterized in that:, overhang on the horizontal hanging stick (4) that bar (12) is fixed on wall (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220371646.7U CN202788905U (en) | 2012-07-30 | 2012-07-30 | Air duct protective cover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220371646.7U CN202788905U (en) | 2012-07-30 | 2012-07-30 | Air duct protective cover |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202788905U true CN202788905U (en) | 2013-03-13 |
Family
ID=47816180
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201220371646.7U Expired - Fee Related CN202788905U (en) | 2012-07-30 | 2012-07-30 | Air duct protective cover |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202788905U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106121680A (en) * | 2016-08-29 | 2016-11-16 | 中国葛洲坝集团第工程有限公司 | Wet shotcreting lining cutting boom truck |
-
2012
- 2012-07-30 CN CN201220371646.7U patent/CN202788905U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106121680A (en) * | 2016-08-29 | 2016-11-16 | 中国葛洲坝集团第工程有限公司 | Wet shotcreting lining cutting boom truck |
| CN106121680B (en) * | 2016-08-29 | 2018-07-27 | 中国葛洲坝集团第一工程有限公司 | Wet shotcreting lining cutting boom truck |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130313 Termination date: 20150730 |
|
| EXPY | Termination of patent right or utility model |