CN203795470U - Rotating and fastening type anti-falling grid - Google Patents
Rotating and fastening type anti-falling grid Download PDFInfo
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- CN203795470U CN203795470U CN201420181813.0U CN201420181813U CN203795470U CN 203795470 U CN203795470 U CN 203795470U CN 201420181813 U CN201420181813 U CN 201420181813U CN 203795470 U CN203795470 U CN 203795470U
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- groove
- screen
- grid
- fastening type
- arc shaped
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Abstract
The utility model discloses a rotating and fastening type anti-falling grid. The grid comprises a gird plate, and a plurality of limiting supports arranged on the inner side surface of a wellbore, wherein grooves corresponding to the positions of the limiting supports are formed in the peripheral edge of the grid plate; the width of the grooves is larger than the width of the limiting supports; a clamping groove used for being clamped with the grid plate is formed in each limiting support; during the use, the grid plate is arranged among the clamping grooves of the limiting supports in an inserting manner through the grooves; the grid plate is arranged on the clamping grooves of the limiting supports in a rotating and fastening manner. According to the utility model, the rotating and fastening type anti-falling grid is applied to the wellbore for effectively performing secondary protection and anti-falling on a wellhead, can meet the requirement that anti-falling devices are required to be arranged in an inspecting well specified in the Outdoor Water-drainage Design Specification, and moreover, the grid is simple in structure, reliable, and easy to operate, and can be mounted and fastened as well as being dismounted and started only through the rotating of the gird plate.
Description
Technical field
The utility model relates to the technical field of urban operating mechanism design, relates in particular to the anti-fall grid of a kind of rotation fastening type.
Background technology
In recent years, because a variety of causes such as breakage, theft, rainwater top punching cause in urban operating mechanism that manhole cover is lost, cause a lot of personnel to fall the accident of dying.Therefore, very urgent to checking that well head adds secondary protection device." Code for design of outdoor sewerage engineering " GB50014-2006 (2014 editions) regulation of People's Republic of China's house and town and country construction portion issuing and implementation on February 10th, 2014: manhole should arrange falling proof device.
Anti-drop device, mainly with nylon wire establishment, hangs on hooked stainless steel bolt at present, can bear the weight of 200Kg left and right.Because the retractility of nylon material is larger, in well, may cause nettle get loose from hook because of reverse tension when water burst, cause protection inefficacy.
" Code for design of outdoor sewerage engineering " requires the falling proof device should be solid and reliable, has certain weight capacity (>=100kg), and possess larger discharge capacity, avoids rainwater between storm period to be flushed away in the time that shaft bottom gushes out.
Therefore, the applicant is devoted to develop a kind of anti-fall grid of rotation fastening type that pit shaft carried out to secondary fall arrest.
Utility model content
Because the above-mentioned defect of prior art, the utility model provides a kind of anti-fall grid of rotation fastening type that pit shaft carried out to secondary fall arrest.
For achieving the above object, the utility model provides a kind of rotation fastening type anti-fall grid, comprise a screen and some for being arranged on the spacing bearing on pit shaft medial surface, the surrounding edge of described screen is corresponding offers groove on the position of spacing bearing described in each, the width of described groove is greater than the width of described spacing bearing, is provided with the draw-in groove for engaging with described screen on described spacing bearing; When use, described screen is plugged in by described groove between the described draw-in groove of some described spacing bearings, on the fastening draw-in groove that is arranged on some described spacing bearings of described screen rotation.
Preferably, described screen comprises annular impeller and grizzly bar, described annular impeller is by multiple arc shaped blades ringwise around forming, and described groove is arranged on the junction of adjacent described arc shaped blade, and what described grizzly bar was crisscross is arranged on the interior ring of described annular impeller.
Preferably, described in each, the diameter of arc shaped blade external periphery outline is clockwise or counterclockwise and is increased gradually to the other end by one end.
Preferably, described draw-in groove comprises upper groove surface, lower groove face, notch and groove bottom, described upper groove surface and described lower groove face are arranged on horizontal plane, described upper groove surface is arranged on the top of described lower groove face, described notch and described groove bottom are arranged between described upper groove surface and described lower groove face, described groove bottom is arranged on the side near described pit shaft medial surface, and described notch is arranged on the side away from described pit shaft medial surface.
Preferably, on the surface in opposite directions of described lower groove face and described arc shaped blade, be formed with respectively the unidirectional locking type sawtooth occlusal surface of coupling, the occlusal interlock direction of rotation of described unidirectional locking type sawtooth is contrary with the diameter augment direction of described arc shaped blade external periphery outline, notch vertical width is greater than the thickness of described arc shaped blade, in notch between the upper exhaust of reserved screen, when dismantling can by carry the screen unidirectional locking type sawtooth occlusal surface that staggers easily and be rotated dismounting.
Preferably, described lower groove face extends to form lower flange down, and described upper groove surface extends to form upper overturning upward, on described lower flange and described upper overturning, offers respectively installing hole.
Preferably, the upper surface of the larger side of the diameter of described arc shaped blade external periphery outline raises up and forms radially flange.
Preferably, described groove and described spacing bearing are respectively four, 90 °, the interval setting of adjacent described groove, and adjacent described spacing bearing 90 °, interval setting, described groove is than the wide 10-30mm of described spacing bearing.
Preferably, described grizzly bar comprises four radially vertical grate, a hoop vertical grate and four inclination grizzly bars, described in four, radially vertical grate is on the orthogonal interior ring that is arranged in described annular impeller of groined type, four described inclination grizzly bars corresponding being erected on four bights of groined type and the interior ring of described annular impeller that described in four, radially vertical grate forms respectively, described inclination grizzly bar is horizontal by the vertical dip angle of 15 °-45 °, described vertical dip angle is pointed to locking direction, described in described hoop vertical grate is erected at radially on vertical grate and described inclination grizzly bar.
Preferably, the glass-reinforced plastic material that described screen is composited by macromolecule epoxy resin and glass fiber is made.
The beneficial effect of the anti-fall grid of rotation fastening type of the present utility model is as follows:
1, the anti-fall grid of rotation fastening type of the present utility model are applied on pit shaft and can effectively carry out secondary protection to well head, have met " Code for design of outdoor sewerage engineering " GB50014-2006 (2014 editions) regulation of People's Republic of China's house and town and country construction portion issuing and implementation on February 10th, 2014: manhole should arrange falling proof device.
2, the anti-fall grid of rotation fastening type of the present utility model are simple in structure, reliable, and simple to operate, only need be rotated fastening and dismounting unlatching can be installed screen.
3, in pit shaft, water burst pushes up away after the cover plate of manhole of road surface, and water flows from bottom to top in well, further promotes inclination grizzly bar of the present utility model and rotates trend by locking direction, impels screen to be more to screw state can not get loose.
4, in the time that rainwater from up to down flows or is subject to downward external loads (as people steps on), except the frictional resistance that the draw-in groove of spacing bearing produces, the unidirectional locking type sawtooth occlusal surface of arc impeller bottom has restricted screen and can not be rotated counterclockwise, and screen can not get loose from described spacing bearing.
5, when urban operating mechanism overhauls, maintainer only need upwards mention screen level toward the rotation of locking rightabout, can unload lower grid plate from bearing, and without other special tool(s)s, it is comparatively convenient to dismantle.
6, the anti-fall grid of rotation fastening type of the present utility model, on the basis of playing security protection, have ensured larger conveyance capacity.
7, the anti-fall grid of rotation fastening type of the present utility model utilize arc shaped blade to make to install and screw all have certain adjustable range, build error by laying bricks or stones condition is provided for adaptation well head.
8, the anti-fall grid of rotation fastening type of the present utility model select glass fiber reinforced plastic as making material, further improve the intensity of product, make its weight that can bear 200kg and indeformable.
Below with reference to accompanying drawing, the technique effect of design of the present utility model, concrete structure and generation is described further, to understand fully the purpose of this utility model, feature and effect.
Brief description of the drawings
Fig. 1 is the Facad structure schematic diagram of the anti-fall grid of rotation fastening type of specific embodiment.
Fig. 2 is the reverse side structural representation of the anti-fall grid of rotation fastening type of specific embodiment.
Fig. 3 be specific embodiment the anti-fall grid of rotation fastening type install and use floor map.
Fig. 4 is the A-A schematic cross-section of Fig. 3.
Fig. 5 is the occlusal interlock schematic diagram of unidirectional locking type sawtooth of specific embodiment.
Fig. 6 is the spacing bearing plane structure schematic diagram of specific embodiment.
Fig. 7 is the B-B schematic cross-section of Fig. 6.
Fig. 8 is the C-C schematic cross-section of Fig. 7.
Fig. 9 is the D-D schematic cross-section of Fig. 1.
Main drawing reference numeral explanation:
Screen 100, groove 110, annular impeller 120, arc shaped blade 121, radially flange 122, grizzly bar 130, radially vertical grate 131, hoop vertical grate 132, inclination grizzly bar 133, vertical dip angle β, spacing bearing 200, draw-in groove 210, upper groove surface 211, lower groove face 212, notch 213, groove bottom 214, lower flange 215, upper overturning 216, pit shaft 300, the first unidirectional locking type sawtooth occlusal surface 400, the second unidirectional locking type sawtooth occlusal surfaces 500.
Detailed description of the invention
As shown in the figure, this specific embodiment proposes the anti-fall grid of a kind of rotation fastening type, comprises screen 100 and four spacing bearings 200 as shown in Figure 6 to 8 as depicted in figs. 1 and 2.As depicted in figs. 1 and 2, on the position of corresponding each the spacing bearing 200 in the surrounding edge of the screen 100 of the present embodiment, offer groove 110, the width of groove 110 is greater than the width of spacing bearing 200.As shown in Figure 7, on the spacing bearing 200 of the present embodiment, be provided with the draw-in groove 210 for engaging with screen 100.When use, as shown in Figure 3 and Figure 4, four spacing bearing 200 correspondences are arranged on pit shaft 300 medial surfaces, the orientation arranging is corresponding with the groove 110 on screen 100, the screen 100 of the present embodiment is plugged in by four grooves 110 between the draw-in groove 210 of four spacing bearings 200, and screen 100 rotates as shown in Figure 3 on the fastening draw-in groove 210 that is arranged on corresponding spacing bearing 200.
Concrete, as depicted in figs. 1 and 2, the screen 100 of the present embodiment comprises annular impeller 120 and grizzly bar 130, annular impeller 120 is annular around forming by four arc shaped blades 121, groove 110 is arranged on the junction of adjacent arc shaped blade 121, and what grizzly bar 130 was crisscross is arranged on the interior ring of annular impeller 120.The diameter of each arc shaped blade 121 external periphery outline is counterclockwise and is increased gradually to the other end by one end, and raises up and form radially flange 122 at the upper surface of the larger side of diameter of arc shaped blade 121 external periphery outlines.Four grooves 110 arrange along 90 °, interval on same circumference in the surrounding of annular impeller 120 in the present embodiment, corresponding adjacent spacing bearing 200 also 90 °, interval arranges, and groove 110 is set to, than the wide 10-30mm of spacing bearing 200, be convenient to dismounting.
Exemplary, as shown in Figure 6 to 8, the draw-in groove 210 of the present embodiment comprises upper groove surface 211, lower groove face 212, notch 213 and groove bottom 214, upper groove surface 211 and lower groove face 212 are arranged on horizontal plane, upper groove surface 211 is arranged on the top of lower groove face 212, notch 213 and groove bottom 214 are arranged between upper groove surface 211 and lower groove face 212, groove bottom 214 is arranged on the side near pit shaft 300 medial surfaces, notch 213 is arranged on the side away from pit shaft 300 medial surfaces, and upper groove surface 211, lower groove face 212, notch 213 and groove bottom 214 are combined to form U-shaped draw-in groove.In addition, the present embodiment is also formed with the first unidirectional locking type sawtooth occlusal surface 400 at every groove face 212 once on the surface of arc shaped blade 121, on facing down the surface of groove face 212, each arc shaped blade 121 is formed with the second unidirectional locking type sawtooth occlusal surface 500, the interlock that matches of the first unidirectional locking type sawtooth occlusal surface 400 and the second unidirectional locking type sawtooth occlusal surface 500, the interlock direction of rotation of the first unidirectional locking type sawtooth occlusal surface 400 and the second unidirectional locking type sawtooth occlusal surface 500 is contrary with the diameter augment direction of arc shaped blade 121 external periphery outlines, be that the screen 100 of the present embodiment is during along the rotation of clockwise locking direction, further interlock the first unidirectional locking type sawtooth occlusal surface 400 of the second unidirectional locking type sawtooth occlusal surface 500, notch 213 vertical width are greater than the thickness of arc shaped blade 121, between the upper exhaust of reserved screen 100, realize when dismounting can by carry the screen 100 first unidirectional locking type sawtooth occlusal surface 400 that staggers easily and be rotated counterclockwise dismounting.Concrete, the present embodiment extends to form lower flange 215 down at lower groove face 212, extends to form upper overturning 216 upward at upper groove surface 211, on lower flange 215 and upper overturning 216, offers respectively installing hole.
Exemplary, as depicted in figs. 1 and 2, the grizzly bar 130 of the present embodiment comprises four radially vertical grate 131, hoop vertical grate 132 and four inclination grizzly bars 133, four radially vertical grate 131 be on the orthogonal interior ring that is arranged in annular impeller 120 of groined type, four inclination grizzly bars 133 are corresponding being erected on four bights of four groined types that radially vertical grate 131 forms and the interior ring of annular impeller 120 respectively.As shown in Figure 9, inclination grizzly bar 133 is horizontal by the vertical dip angle β of 15 °-45 °, preferably adopt 30 ° of vertical dip angle β, vertical dip angle β points to clockwise locking direction, and hoop vertical grate 132 is erected at radially in vertical grate 131 and inclination grizzly bar 133.Exemplary, the glass-reinforced plastic material that the screen 130 of the present embodiment is composited by macromolecule epoxy resin and glass fiber is made.
Certainly, in other specific embodiments, concrete shape, quantity and/or the material of screen and spacing bearing can carry out accommodation according to actual needs, and the locking direction of the anti-fall grid of rotation fastening type also can accommodation make into counterclockwise, to repeat no more herein simultaneously.
Fig. 3 be specific embodiment the anti-fall grid of rotation fastening type install and use floor map.As shown in Figure 3, the anti-fall grid of rotation fastening type of the present embodiment are arranged in pit shaft 300 and use, according to the parameter of pit shaft 300 and specific design requirement, the anti-fall grid of rotation fastening type of prefabricated appearance and size coupling, as this specific embodiment is made as screen 100 shape of 4 arc shaped blades 121 of annular plane winding and interlaced arrangement grizzly bar 130 in advance, arc shaped blade 121 thickness adopt 20mm, grizzly bar 130 thickness adopt 10mm, the width of groove 110 is than the wide 20mm of spacing bearing 200, every section of arc shaped blade 121 maximum radius at outline edge and the difference of least radius are 30mm, wherein the groove bottom 214 of draw-in groove 210 is fitted on arc shaped blade 121 outlines, also be provided with at radius maximum the radially flange 122 that 30mm is high simultaneously.Exemplary, the mounting method of the anti-fall grid of the present embodiment rotation fastening type on pit shaft is as follows:
1, adopt stainless steel expansion bolt that 4 spacing bearings 200 are firmly installed on to about 20cm place under pit shaft 300 well heads, and 90 ° each other, adjacent spacing bearing 200 center is set, and be substantially positioned at same level.
2, each groove 110 of screen 100 is aimed to each spacing bearing 200 and drop into, clockwise direction rotation screen 100 blades, make it snap in the draw-in groove 210 of each spacing bearing 200 and firmly screw solid.
Wherein, the anti-fall grid of the present embodiment rotation fastening type include but not limited to following work characteristics:
The screen 100 of the glass steel material that 1,20mm is thick has good intensity, can bear the weight of 200kg and indeformable.
2, grizzly bar 130 interlaced arrangement, spacing can be according to design modifying, and originally spacing is all not more than 100mm in the present embodiment, and realizing ring place in screen is grid hollow out, on the basis of playing security protection, has ensured larger conveyance capacity.
3, have the difference of 30mm due to the radius at the outline edge of every arc shaped blade 121, making to install and screw all has certain adjustable range, builds error by laying bricks or stones condition is provided for adapting to well head.
4, screen 100 is in the interior clockwise rotation of draw-in groove 210 of spacing bearing 200, and the gap between the outline edge of arc impeller 120 and the groove bottom 214 of draw-in groove 210 is from large to small until push against formation tightening state.
5, in well, water burst pushes up away after the cover plate of manhole of road surface, in well, water flows from bottom to top, can further promote four inclination grizzly bars 133 trend that turns clockwise because four inclination grizzly bars 133 are provided with respectively vertical dip angle β as shown in Figure 9, impel screen 100 to be more to screw state can not get loose.
6, in the time that rainwater from up to down flows or is subject to downward external loads (as people steps on), except the frictional resistance that the draw-in groove 210 of spacing bearing 200 produces, the second unidirectional locking type sawtooth occlusal surface 500 interlocks on the first unidirectional locking type sawtooth occlusal surface 400 of arc shaped blade 121 soffits and lower groove face 212 have restricted screen 100 and can not be rotated counterclockwise, and screen 100 can not got loose from spacing bearing 200.
7, when urban operating mechanism overhauls, maintainer only need upwards mention screen 100 and level is rotated counterclockwise, and can unload lower grid plate 100 from spacing bearing 200, and without other special tool(s)s, it is comparatively convenient to dismantle.
More than describe preferred embodiment of the present utility model in detail.Should be appreciated that those of ordinary skill in the art just can make many modifications and variations according to design of the present utility model without creative work.Therefore, all technician in the art comply with design of the present utility model on the basis of existing technology by the available technical scheme of logical analysis, reasoning, or a limited experiment, all should be in by the determined protection domain of claims.
Claims (10)
1. the anti-fall grid of rotation fastening type, it is characterized in that: comprise a screen and some for being arranged on the spacing bearing on pit shaft medial surface, the surrounding edge of described screen is corresponding offers groove on the position of spacing bearing described in each, the width of described groove is greater than the width of described spacing bearing, is provided with the draw-in groove for engaging with described screen on described spacing bearing; When use, described screen is plugged in by described groove between the described draw-in groove of some described spacing bearings, on the fastening draw-in groove that is arranged on some described spacing bearings of described screen rotation.
2. the anti-fall grid of rotation fastening type as claimed in claim 1, it is characterized in that: described screen comprises annular impeller and grizzly bar, described annular impeller by multiple arc shaped blades ringwise around forming, described groove is arranged on the junction of adjacent described arc shaped blade, and what described grizzly bar was crisscross is arranged on the interior ring of described annular impeller.
3. the anti-fall grid of rotation fastening type as claimed in claim 2, is characterized in that: described in each, the diameter of arc shaped blade external periphery outline is clockwise or counterclockwise and is increased gradually to the other end by one end.
4. the anti-fall grid of the rotation fastening type as described in claim 1 or 3, it is characterized in that: described draw-in groove comprises upper groove surface, lower groove face, notch and groove bottom, described upper groove surface and described lower groove face are arranged on horizontal plane, described upper groove surface is arranged on the top of described lower groove face, described notch and described groove bottom are arranged between described upper groove surface and described lower groove face, described groove bottom is arranged on the side near described pit shaft medial surface, and described notch is arranged on the side away from described pit shaft medial surface.
5. the anti-fall grid of rotation fastening type as claimed in claim 4, it is characterized in that: the unidirectional locking type sawtooth occlusal surface that is formed with respectively coupling on the surface in opposite directions of described lower groove face and arc shaped blade, the occlusal interlock direction of rotation of described unidirectional locking type sawtooth is contrary with the diameter augment direction of described arc shaped blade external periphery outline, notch vertical width is greater than the thickness of described arc shaped blade, in notch between the upper exhaust of reserved screen, when dismantling can by carry the screen unidirectional locking type sawtooth occlusal surface that staggers easily and be rotated dismounting.
6. the anti-fall grid of rotation fastening type as claimed in claim 4, is characterized in that: described lower groove face extends to form lower flange down, and described upper groove surface extends to form upper overturning upward, on described lower flange and described upper overturning, offer respectively installing hole.
7. the anti-fall grid of rotation fastening type as claimed in claim 3, is characterized in that: the upper surface of the larger side of diameter of described arc shaped blade external periphery outline raises up and forms radially flange.
8. the anti-fall grid of rotation fastening type as claimed in claim 1, it is characterized in that: described groove and described spacing bearing are respectively four, 90 °, the interval setting of adjacent described groove, adjacent described spacing bearing 90 °, interval setting, described groove is than the wide 10-30mm of described spacing bearing.
9. the anti-fall grid of rotation fastening type as claimed in claim 2, it is characterized in that: described grizzly bar comprises four radially vertical grate, a hoop vertical grate and four inclination grizzly bars, described in four, radially vertical grate is on the orthogonal interior ring that is arranged in described annular impeller of groined type, four described inclination grizzly bars corresponding being erected on four bights of groined type and the interior ring of described annular impeller that described in four, radially vertical grate forms respectively, described inclination grizzly bar is horizontal by the vertical dip angle of 15 °-45 °, described vertical dip angle is pointed to locking direction, described in described hoop vertical grate is erected at radially on vertical grate and described inclination grizzly bar.
10. the anti-fall grid of rotation fastening type as claimed in claim 1, is characterized in that: the glass-reinforced plastic material that described screen is composited by macromolecule epoxy resin and glass fiber is made.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420181813.0U CN203795470U (en) | 2014-04-15 | 2014-04-15 | Rotating and fastening type anti-falling grid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420181813.0U CN203795470U (en) | 2014-04-15 | 2014-04-15 | Rotating and fastening type anti-falling grid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203795470U true CN203795470U (en) | 2014-08-27 |
Family
ID=51377699
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420181813.0U Expired - Fee Related CN203795470U (en) | 2014-04-15 | 2014-04-15 | Rotating and fastening type anti-falling grid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203795470U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104480970A (en) * | 2014-12-10 | 2015-04-01 | 马根昌 | Antitheft manhole cover |
| CN110468881A (en) * | 2019-09-06 | 2019-11-19 | 安徽省飞龙新型材料有限公司 | A kind of fall arrest well lid of municipal works |
-
2014
- 2014-04-15 CN CN201420181813.0U patent/CN203795470U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104480970A (en) * | 2014-12-10 | 2015-04-01 | 马根昌 | Antitheft manhole cover |
| CN104480970B (en) * | 2014-12-10 | 2016-06-08 | 国网山东省电力公司宁津县供电公司 | Anti-stealing manhole cover |
| CN110468881A (en) * | 2019-09-06 | 2019-11-19 | 安徽省飞龙新型材料有限公司 | A kind of fall arrest well lid of municipal works |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP03 | Change of name, title or address |
Address after: 230041 Anhui province Hefei City Yingshang Road West, Yi Jing Road South colorful 16 storey office building, 17 floor, 18 floor Patentee after: HEFEI MUNICIPAL DESIGN AND RESEARCH INSTITUTE Co.,Ltd. Address before: 230041 Anqing Road, Anhui, China, No. 85, No. Patentee before: HEFEI MUNICIPAL DESIGN INSTITUTE Co.,Ltd. |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140827 |
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| CF01 | Termination of patent right due to non-payment of annual fee |