CN102086649B - Multi-layer protection well cover with built-in lock - Google Patents
Multi-layer protection well cover with built-in lock Download PDFInfo
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- CN102086649B CN102086649B CN 201010580756 CN201010580756A CN102086649B CN 102086649 B CN102086649 B CN 102086649B CN 201010580756 CN201010580756 CN 201010580756 CN 201010580756 A CN201010580756 A CN 201010580756A CN 102086649 B CN102086649 B CN 102086649B
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Abstract
The invention discloses a multi-layer protection well cover with a built-in lock, which can realize multi-layer protection and solves the problems of single protection, frequency stealing, even stealing of articles at the lower edge of the well cover, great property loss and potential safety hazard caused on the country and people existing in the conventional well cover. The multi-layer protection well cover comprises a base system, a lock plate system, a lock system and a key system, wherein the lock plate system and the lock system are positioned on the base; and the key system is used for opening the multi-layer protection well cover. When the well cover is used, an outer lock hole is opened, a lock hole cover is exposed, a lock port enclosing plate is rotated by using a plate opening key, an inner lock hole is exposed, an inner lock hole key is matched with the inner lock hole, and the inner lock hole key is moved, so that a lock hole disc is driven to move, a connecting rod locking post is continually driven to move, and the well cover is locked or unlocked.
Description
Technical field:
The present invention relates to a kind of well lid, relate in particular to a kind of Multilayer protection built-in lockset well lid that can realize the multilayer protection.
Background technology:
Traditional well lid protection is single, well lid often occurs stolen, and even the following stolen phenomenon of article of well lid, caused very large property loss and potential safety hazard to the country and people.
Summary of the invention:
The purpose of invention:
For a kind of safety is provided, multi-stage protection is not easy stolen manhole lid device.
In order to reach as above purpose, the present invention takes following technical scheme:
Whole device comprises base systems, jam plate system, lock system, key system;
Base systems comprises manhole cover plate, well lid pedestal, manhole cover plate can be embedded in above the well lid pedestal, manhole cover plate and the chimeric rear surface of well lid pedestal are smooth, there is exterior lockhole at manhole cover plate external surface center, and both sides are carried Gai Kongyu and opened plate and carry and cover the hole, and there is cycle hole in a chimeric week of well lid pedestal top inner ring and manhole cover plate, the manhole cover plate inner surface has interior girth sheets around exterior lockhole, inner ring hole on interior girth sheets, the bossed outer girth sheets appurtenance in manhole cover plate inner surface outer ring has cycle hole on outer girth sheets appurtenance;
The jam plate system comprises fore shaft closure plate, fixed head, the rectangular shape of fore shaft closure plate, right angle one end has the contact of fore shaft closure plate, an other end has lockhole cap, on one section axle of contact one end of fore shaft closure plate, fore shaft closure plate gland circle is arranged, having has in one section shaft lock mouth sealing plate stem section of lockhole cap one end perpendicular to the plate of fore shaft closure plate spring eye is arranged above fore shaft closure plate plane; Fixed head is the plate that is slightly less than the angle shape at right angle, and the angle corner point has fixed disk gland circle, and an end has the plate that the fixed head spring eye is arranged perpendicular to the fixed head plane; Fixed disk gland circle and fore shaft closure plate gland circle be by two cover clamp glands, the middle part have double-screw bolt from pressing close to the manhole cover plate inner surface successively with nut, lower cover, fixed disk gland circle, fore shaft closure plate gland circle, upper press cover, nut links up, and is fixed on well lid; Back-moving spring couples together fore shaft closure plate spring eye and fixed head spring eye, and lockhole cap is above spring normally is positioned at the internal lock hole in flexible situation;
The lock system comprises fixed disk, the lockhole dish; The lockhole that is positioned at the center is arranged on the lockhole dish, be positioned at the limited post of avris, in discord lockhole be positioned at the same side by the fixing connecting rod lock of lockhole dish steady pin, the connecting rod lock is comprised of one-level connecting rod, secondary connecting rod, three grades of link lock posts, one-level connecting rod and secondary connecting rod connecting portion have the symmetrical inclined-plane on the one-level connecting rod, have three cascade pole pairs to claim the inclined-plane on three grades of link lock posts; Fixed disk comprises the fixed disk hole on dish; A plurality of fixed angles perpendicular to card; On one of them fixed angles, also with the fixed angles card, fixed angles is fixed on interior girth sheets by the angle hold-down nut, and the fixed angles card seals plate stem section with fore shaft and blocks; The lockhole dish has lockhole column that lockhole dish and fixed disk are connected and fixed by the lockhole column fixing hole between fixed disk and manhole cover plate inner surface; The connecting rod lock reaches when the longest successively by inner ring hole, cycle hole; Limited post stretches out lockhole dish plane and is arranged in a fixed disk hole.
Key system comprises out the plate key, the exterior lockhole key, the internal lock hole key, open plate key keyboard non-end in the middle of a part outstanding, vertically can insert out plate and carry and cover the hole; The exterior lockhole key can agree with exterior lockhole and it be opened, and the internal lock hole key can agree with and it is opened with interior lockhole.
The further technical scheme of the present invention is: cycle hole part is outwardly shut for plastics, and the connecting rod lock reaches and stretches into cycle hole when the longest, can not stretch well lid pedestal outside.
The further technical scheme of the present invention is: there are built-in two layers of manhole cover plate at the position on the lower side of well lid base interior.
The further technical scheme of the present invention is: the inner semi-cylindrical for vertically being blocked of described interior lockhole.
When using, open exterior lockhole, spill lockhole cap, with opening the plate key, the fore shaft closure plate is rotated, spill interior lockhole, internal lock hole key and interior lockhole agree with, and make it motion, thereby drive the motion of lockhole dish, continue the motion of drivening rod lock, with Manhole cover lock or release.
The invention has the beneficial effects as follows:
Owing to having adopted the multi-stage protection device, safer, make the well lid protection more perfect, thing stolen phenomenon in down-hole can not occur.
Description of drawings:
In order to further illustrate the present invention, further describe below in conjunction with accompanying drawing:
Accompanying drawing is the structural representation of invention:
Fig. 1 is well lid inner surface device distribution map:
Fig. 2 is the device distribution enlarged drawing of girth sheets 2 inside in the well lid inner surface;
Fig. 3 is the structural representation of jam plate system;
Fig. 4 is one-level bar linkage structure schematic diagram;
Fig. 4-A is that front view 4-B is side cutaway view;
Fig. 5 is secondary bar linkage structure schematic diagram;
Fig. 6 is three grades of link lock rod structure schematic diagrames;
Fig. 7 is the fixed disk structural representation;
Fig. 8 is the structural representation that on the lockhole dish, the connecting rod lock distributes,
Fig. 9 is the structural representation of the non-connecting rod lock of lockhole dish distribution face
Figure 10 is the structural representation of fore shaft closure plate;
Figure 11 is the fixed plate structure schematic diagram;
Figure 12 is manhole cover system apparatus structure schematic diagram;
Figure 13 covers the bar structural representation for carrying;
Figure 14 is out the structural representation of plate key 33;
Figure 15 is the structural representation of internal lock hole key;
Figure 16 is the structural representation of exterior lockhole key;
Wherein: 1 carries and covers the hole; 2 interior girth sheets; 3 lockhole dishes; 4 limited posts; 5 inner ring holes; 6 lockhole columns; 7 fore shaft closure plate; 8 open plate carries and covers the hole; 9 back-moving springs; 10 connecting rod locks; 11 jiaos of hold-down nuts; 12 outer girth sheets appurtenances; 13 cycle holes; 14 interior lockholes; 15 lockhole caps; 16 fore shaft closure plate spring eyes; 17 fixed head spring eyes; 18 fixed heads; 19 fore shaft closure plate fixed legs; 20 glands; Symmetrical inclined-plane on 21 one-level connecting rods; 22 one-level connecting rod connecting holes; 23 one-level connecting rods; 24 secondary connecting rods; 25 3 grades of link lock posts; 26 3 cascade pole pairs claim the inclined-plane; 27 fixed disks; 28 fixed disk holes; 29 lockhole column fixing holes; 30 fixed angles cards; 31 fixed angles; 32 carry and cover bar; 33 open the plate key; 34 exterior lockhole keys; 35 fixed disk gland circles; 36 internal lock hole keys; 37 fore shafts sealings plate stem sections; 38 fore shaft closure plate gland circles; 39 lockhole dish steady pins; 40 exterior lockholes; 41. manhole cover plate; 42 well lid pedestals; 43 built-in two layers of manhole cover plate.
The specific embodiment:
Below in conjunction with accompanying drawing, one embodiment of the present of invention are described, the present embodiment is not construed as limiting the invention:
In conjunction with whole accompanying drawing: comprise base systems, jam plate system, lock system, key system; Base systems comprises manhole cover plate 41, well lid pedestal 42, manhole cover plate 41 can be embedded in well lid pedestal 42 tops, manhole cover plate 41 and the chimeric rear surface of well lid pedestal 42 are smooth, there is exterior lockhole 40 at manhole cover plate 41 external surface centers, both sides are carried and are covered hole 1 and open plate and carry and cover hole 8, what well lid pedestal 42 top inner rings and manhole cover plate 41 were chimeric a week has cycle hole 13, manhole cover plate 41 inner surfaces have interior girth sheets 2 around exterior lockhole 40, inner ring hole 5 on interior girth sheets 2, the manhole cover plate 41 bossed outer girth sheets appurtenances 12 in inner surface outer ring have cycle hole 13 on outer girth sheets appurtenance 12;
The jam plate system comprises fore shaft closure plate 7, fixed head 18, the rectangular shape of fore shaft closure plate 7, right angle one end has the contact of fore shaft closure plate 7, an other end has lockhole cap 15, on one section axle of contact one end of fore shaft closure plate 7, fore shaft closure plate gland circle 38 is arranged, having has in one section shaft lock mouth sealing plate stem section 37 of lockhole cap 15 1 ends perpendicular to the plate of fore shaft closure plate spring eye 16 is arranged above fore shaft closure plate 7 planes; Fixed head 18 is the plate of the angle shape that is slightly less than the right angle, and the angle corner point has fixed disk gland circle 35, one ends that the plate that fixed head spring eye 17 is arranged perpendicular to fixed head 18 planes is arranged; Fixed disk gland circle 35 with fore shaft closure plate gland circle 38 by two cover clamp glands, the middle part have double-screw bolt from pressing close to manhole cover plate 41 inner surfaces successively with nut, lower cover, fixed disk gland circle 35, fore shaft closure plate gland circle 38, upper press cover, nut links up, and is fixed on well lid; Back-moving spring 9 couples together fore shaft closure plate spring eye 16 and fixed head spring eye 17, and lockhole cap 15 is above spring normally is positioned at internal lock hole 14 in flexible situation;
The lock system comprises fixed disk 27, lockhole dish 3; The lockhole 14 that is positioned at the center is arranged on lockhole dish 3, be positioned at the limited post 4 of avris, in discord lockhole 14 be positioned at the same side by the fixing connecting rod lock 10 of lockhole dish steady pin 39, connecting rod lock 10 is comprised of one-level connecting rod 23, secondary connecting rod 24, three grades of link lock posts 25, one-level connecting rod 23 and secondary connecting rod 24 connecting portions have on 21, three grades, symmetrical inclined-plane link lock post 25 on the one-level connecting rod has three cascade pole pairs to claim inclined-plane 26; Fixed disk 27 comprises the fixed disk hole 28 on dish; A plurality of fixed angles 31 perpendicular to card; On one of them fixed angles 31, also with fixed angles card 30, fixed angles 31 is fixed on interior girth sheets 2 by angle hold-down nut 11, and fixed angles card 30 seals plate stem section 37 with fore shaft and blocks; Lockhole dish 3 has lockhole column 6 that lockhole dish 3 and fixed disk 27 are connected and fixed by lockhole column fixing hole 29 between fixed disk 27 and manhole cover plate 41 inner surfaces; Connecting rod lock 10 reaches when the longest successively by inner ring hole 5, cycle hole 13; Limited post 4 stretches out lockhole dish 3 planes and is arranged in a fixed disk hole 28.
Key system comprises out plate key 33, exterior lockhole key 34, internal lock hole key 36, open plate key 33 keyboard non-ends in the middle of a part outstanding, vertically can insert out plate and carry and cover hole 8; Exterior lockhole key 34 can agree with and it is opened with exterior lockhole 40, and internal lock hole key 36 can agree with and it is opened with interior lockhole 14.
The further technical scheme of the present invention is: cycle hole 13 part is outwardly shut for plastics, and connecting rod lock 10 reaches and stretches into cycle hole 13 when the longest, can not stretch well lid pedestal 42 outsides.
The further technical scheme of the present invention is: there are built-in two layers of manhole cover plate 43 at the position on the lower side of well lid pedestal 42 inside.
The further technical scheme of the present invention is: the inner semi-cylindrical for vertically being blocked of described interior lockhole 14.
Fig. 1 is well lid inner surface device distribution map: in conjunction with Fig. 3
Wherein: open plate and carry and cover hole 8 and can have out plate key 33 to insert, fore shaft closure plate 7 is rotated, because spring 9 distortion, so lockhole cap 15 can depart from interior lockhole 14 tops, thereby internal lock hole key 36 inserts and interior lockhole 14 can be rotated, interior lockhole 14 rotates and drives 3 rotations of lockhole dish, and lockhole dish 3 rotates drivening rod locks 10 and moves, thereby can open or close well lid.
Because cycle hole 13 outsides are shut by plastics, connecting rod lock 10 reaches and stretches into cycle hole 13 when the longest, can not stretch well lid pedestal 42 outsides, the hole can not blocked when operation so external environment condition is in the milk etc.
Fig. 2 is the device distribution enlarged drawing of girth sheets 2 inside in the well lid inner surface
Wherein: limited post 4 can be subject to the restriction in fixed disk hole 28 along with the rotation of lockhole dish 3, thereby makes the motion of connecting rod lock 10 be restricted, and can not rotate to make connecting rod lock 10 action is not in place always and even try to shirk responsibility; Lockhole dish steady pin 39 is fixed on connecting rod lock 10 on lockhole dish 3.
Fig. 3 is the structural representation of jam plate system; In conjunction with Figure 10
Fore shaft closure plate 7 is positioned at the top, fixed head 18 is positioned at the below, lockhole cap 15 is being positioned in the normal flexible situation of spring 9 above internal lock hole 14, in action, fixed head 18 is motionless, fore shaft closure plate 7 motion under the contact of opening 33 pairs of fore shaft closure plate 7 of plate key promotes, and tensile deformation occurs in spring 9, lockhole cap 15 is in the situation that the spring stretching departs from above interior lockhole 14, and interior lockhole 14 can expose.
Fig. 4 is one-level bar linkage structure schematic diagram
Fig. 4-A is that front view 4-B is side cutaway view
One-level connecting rod 23 and secondary connecting rod 24, and three grades of common connecting rod locks 10 that form of link lock post 25.
One-level connecting rod 23 and secondary connecting rod 24 connecting portions have the symmetrical inclined-plane 21 on the one-level connecting rod, and its structure can prevent that connecting rod lock 10 undirectional motion amplitudes are excessive as shown in the figure.
Fig. 5 is secondary bar linkage structure schematic diagram
The secondary linkage connects one-level connecting rod 23 and three grades of link lock posts 25 in connecting rod lock 10.
Fig. 6 is three grades of link lock rod structure schematic diagrames
Have three cascade pole pairs to claim inclined-plane 26 on three grades of link lock posts 25, purpose is to prevent that connecting rod lock 10 undirectional motion amplitudes are excessive.
Fig. 7 is the fixed disk structural representation; In conjunction with Fig. 1, Fig. 8
Wherein fixed disk 27 comprises the fixed disk hole 28 on dish; A plurality of fixed angles 31 perpendicular to card; On one of them fixed angles 31 also with fixed angles card 30.
28 effects of fixed disk hole are:
A reduces the quality of fixed disk 27
B and limited post 4 actings in conjunction realize spacing
Fig. 8 is the structural representation that on the lockhole dish, the connecting rod lock distributes,
On lockhole dish 3, connecting rod lock 10 is evenly distributed, and the lockhole 14 that is positioned at the center is arranged on lockhole dish 3.
Fig. 9 is the structural representation of the non-connecting rod lock of lockhole dish distribution face
Lockhole dish steady pin 39 is fixed on connecting rod lock 10 on lockhole dish 3.
Figure 10 is the structural representation of fore shaft closure plate
The rectangular shape of fore shaft closure plate 7, right angle one end has the contact of fore shaft closure plate 7, an other end has lockhole cap 15, on one section axle of contact one end of fore shaft closure plate 7, fore shaft closure plate gland circle 38 is arranged, having has in one section shaft lock mouth sealing plate stem section 37 of lockhole cap 15 1 ends perpendicular to the plate of fore shaft closure plate spring eye 16 is arranged above fore shaft closure plate 7 planes.Be used for hanging spring, fore shaft closure plate gland circle 38 is used for and the gland circle of fixed head overlaps fixingly, and the contact of fore shaft closure plate 7 is used for and opens plate key 33 and contact and realize braking.
Figure 11 is the fixed plate structure schematic diagram; In conjunction with Fig. 3
Fixed disk gland circle 35 is used for and fore shaft closure plate gland circle 38 overlaps, and carries out gland and fixes, and fixed head spring eye 17 is used for and fore shaft closure plate spring eye 16 combines fixing spring.
Figure 12 is manhole cover system apparatus structure schematic diagram; In conjunction with Fig. 1
Wherein, well lid pedestal 42 inner lower have built-in two layers of manhole cover plate 43, manhole cover plate 41 can be embedded in well lid pedestal 42 tops, manhole cover plate 41 and the chimeric rear surface of well lid pedestal 42 are smooth, there is exterior lockhole 40 at manhole cover plate 41 external surface centers, both sides are carried and are covered hole 1 and carry and cover hole 8 with opening plate, carry covering hole 1 and opening plate and carry that to cover hole 8 symmetrical centered by exterior lockhole 40, and what well lid pedestal 42 top inner rings and manhole cover plate 41 were chimeric a week has cycle hole 13.
Two layers of manhole cover plate 43 are multi-stage protections, have prevented that the people from up advancing below, does destruction.
Figure 13 covers the bar structural representation for carrying
Carry and cover bar 32, it can be in the situation that pattern manhole cover lock be opened to insert to carry cover hole 1 and open plate and carry and cover hole 8 rotations well lid is mentioned.
Figure 14 is for opening plate key 33, can insert out plate and carry and cover hole 8, rotates lockhole cap 15 is opened, and carries out the locking and unlocking device of well lid, and the non-handle end of its keyboard middle part is outstanding, can position operation accurately.
Figure 15 is the structural representation of internal lock hole key
Internal lock hole key 36 can agree with interior lockhole 14, makes it motion.
Figure 16 is the structural representation of exterior lockhole key
When using, open exterior lockhole 40, spill lockhole cap 15, with opening plate key 33, fore shaft closure plate 7 is rotated, spill interior lockhole 14, internal lock hole key 36 and interior lockhole 14 agree with, and make it motion, thereby drive 3 motions of lockhole dish, continue 10 motions of drivening rod lock, with Manhole cover lock or release.
The inner semi-cylindrical for vertically being blocked of described interior lockhole 14, the devices such as pliers are difficult to open it, and the internal lock hole key 36 that need to agree with just can open it.
Owing to having adopted the multi-stage protection device, safer, make the well lid protection more perfect, thing stolen phenomenon in down-hole can not occur.
Claims (4)
1. Multilayer protection built-in lockset well lid is characterized in that: comprise base systems, jam plate system, lock system, key system;
base systems comprises manhole cover plate (41), well lid pedestal (42), manhole cover plate (41) can be embedded in above well lid pedestal (42), manhole cover plate (41) and the chimeric rear surface of well lid pedestal (42) are smooth, there is exterior lockhole (40) at manhole cover plate (41) external surface center, both sides are carried and are covered hole (1) and open plate and carry and cover hole (8), well lid pedestal (42) top inner ring and manhole cover plate (41) are chimeric cycle hole (13) week, manhole cover plate (41) inner surface has interior girth sheets (2) around exterior lockhole (40), inner ring hole (5) is arranged on interior girth sheets (2), the bossed outer girth sheets appurtenance in manhole cover plate (41) inner surface outer ring (12), cycle hole (13) is arranged on outer girth sheets appurtenance (12),
The jam plate system comprises fore shaft closure plate (7), fixed head (18), fore shaft closure plate (7) is shape at right angles, right angle one end has the contact of fore shaft closure plate (7), an other end has lockhole cap (15), on one section axle of contact one end of fore shaft closure plate (7), fore shaft closure plate gland circle (38) is arranged, having has in one section shaft lock mouth sealing plate stem section (37) of lockhole cap (15) one ends perpendicular to the plate of fore shaft closure plate spring eye (16) is arranged above fore shaft closure plate (7) plane; Fixed head (18) is the plate less than the angle shape at right angle, and the angle corner point has fixed disk gland circle (35), and an end has the plate that fixed head spring eye (17) are arranged perpendicular to fixed head (18) plane; Fixed disk gland circle (35) and fore shaft closure plate gland circle (38) are by two cover clamp glands, the middle part have double-screw bolt from pressing close to manhole cover plate (41) inner surface successively with nut, lower cover, fixed disk gland circle (35), fore shaft closure plate gland circle (38), upper press cover, nut links up, and is fixed on well lid; Back-moving spring (9) couples together fore shaft closure plate spring eye (16) and fixed head spring eye (17), and lockhole cap (15) normally is positioned at top, internal lock hole (14) in flexible situation at spring;
The lock system comprises fixed disk (27), lockhole dish (3); the lockhole (14) that is positioned at the center is arranged on lockhole dish (3), be positioned at the limited post (4) of avris, in discord lockhole (14) be positioned at the same side by the fixing connecting rod lock (10) of lockhole dish steady pin (39), connecting rod lock (10) is by one-level connecting rod (23), secondary connecting rod (24), three grades of link lock posts (25) form, one-level connecting rod (23) and secondary connecting rod (24) connecting portion have the symmetrical inclined-plane (21) on the one-level connecting rod, there are three cascade pole pairs to claim inclined-plane (26) on three grades of link lock posts (25), fixed disk (27) comprises the fixed disk hole (28) on dish, a plurality of fixed angles (31) perpendicular to card, on one of them fixed angles (31), also with fixed angles card (30), fixed angles (31) is fixed on interior girth sheets (2) by angle hold-down nut (11), and fixed angles card (30) seals plate stem section (37) with fore shaft and blocks, lockhole dish (3) is positioned between fixed disk (27) and manhole cover plate (41) inner surface, has lockhole column (6) that lockhole dish (3) and fixed disk (27) are connected and fixed by lockhole column fixing hole (29), connecting rod lock (10) reaches when the longest successively by inner ring hole (5), cycle hole (13), limited post (4) stretches out lockhole dish (3) plane and is arranged in a fixed disk hole (28),
Key system comprises out plate key (33), exterior lockhole key (34), internal lock hole key (36), open plate key (33) keyboard non-end in the middle of a part outstanding, vertically can insert out plate and carry and cover hole (8); Exterior lockhole key (34) shape can be agreed with exterior lockhole (40), and internal lock hole key (36) shape can be agreed with interior lockhole (14).
2. Multilayer protection built-in lockset well lid as claimed in claim 1; be further characterized in that: cycle hole (13) part is outwardly shut for plastics; connecting rod lock (10) reaches and stretches into cycle hole (13) when the longest, can not stretch well lid pedestal (42) outside.
3. Multilayer protection built-in lockset well lid as claimed in claim 1 is further characterized in that: there are built-in two layers of manhole cover plate (43) at well lid pedestal (42) inner position on the lower side.
4. Multilayer protection built-in lockset well lid as claimed in claim 1, be further characterized in that: the inner semi-cylindrical for vertically being blocked of described interior lockhole (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010580756 CN102086649B (en) | 2010-12-07 | 2010-12-07 | Multi-layer protection well cover with built-in lock |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010580756 CN102086649B (en) | 2010-12-07 | 2010-12-07 | Multi-layer protection well cover with built-in lock |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102086649A CN102086649A (en) | 2011-06-08 |
| CN102086649B true CN102086649B (en) | 2013-05-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010580756 Expired - Fee Related CN102086649B (en) | 2010-12-07 | 2010-12-07 | Multi-layer protection well cover with built-in lock |
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| Country | Link |
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| CN (1) | CN102086649B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103410171A (en) * | 2013-07-18 | 2013-11-27 | 吴江市黎里建兴铸件厂 | Anti-theft inspection well cover |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2663524Y (en) * | 2003-12-10 | 2004-12-15 | 郭志强 | Anti-theft well cover |
| CN1958971A (en) * | 2005-11-06 | 2007-05-09 | 牟应伦 | Handy and safe theftproof well covers |
| EP1769125B1 (en) * | 2004-07-14 | 2007-12-26 | Hydrotec Technologies Gmbh & Co. Kg | Device for locking a cover of a manhole top, and manhole top |
| CN101457532A (en) * | 2007-12-16 | 2009-06-17 | 牟应伦 | Anti-stealing manhole cover with fixation and anti-theft function |
| CN201962699U (en) * | 2010-12-07 | 2011-09-07 | 徐能德 | Multilayer protection built-in lockset well lid |
-
2010
- 2010-12-07 CN CN 201010580756 patent/CN102086649B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2663524Y (en) * | 2003-12-10 | 2004-12-15 | 郭志强 | Anti-theft well cover |
| EP1769125B1 (en) * | 2004-07-14 | 2007-12-26 | Hydrotec Technologies Gmbh & Co. Kg | Device for locking a cover of a manhole top, and manhole top |
| CN1958971A (en) * | 2005-11-06 | 2007-05-09 | 牟应伦 | Handy and safe theftproof well covers |
| CN101457532A (en) * | 2007-12-16 | 2009-06-17 | 牟应伦 | Anti-stealing manhole cover with fixation and anti-theft function |
| CN201962699U (en) * | 2010-12-07 | 2011-09-07 | 徐能德 | Multilayer protection built-in lockset well lid |
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| Publication number | Publication date |
|---|---|
| CN102086649A (en) | 2011-06-08 |
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