CN101798819B - Theftproof self-locking type manhole cover and unlocking device thereof - Google Patents
Theftproof self-locking type manhole cover and unlocking device thereof Download PDFInfo
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- CN101798819B CN101798819B CN2010101438481A CN201010143848A CN101798819B CN 101798819 B CN101798819 B CN 101798819B CN 2010101438481 A CN2010101438481 A CN 2010101438481A CN 201010143848 A CN201010143848 A CN 201010143848A CN 101798819 B CN101798819 B CN 101798819B
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- spoon
- key
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- cover plate
- self
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Abstract
The invention relates to a theftproof self-locking type manhole cover. At least two self-locking devices are uniformly distributed on the edge of the lower side of an upper cover plate. The upper cover plate is provided with an unlocking hole. Each device is provided with a hinging seat and a lock head, wherein the hinging seat is arranged on the lower side of the upper cover plate; the upper part of the lock head is hinged with the hinging seat; and the upper and the lower ends of the lock head are provided with a first extension lug near the unlocking hole and a second extension lug clamped with a lug boss. An unlocking device of the manhole cover is provided with a key box, a key body, two key rods, two folding plates and at least one spring, wherein the two folding plates are arranged in the key board. The key body consists of a driving handle and a driving strip, wherein the driving handle extends out of the key box; the driving strip is arranged in the key box. The spring is arranged on the other transversal side of the driving strip. The two folding plates are fixedly connected with two longitudinal ends of the driving strip. One of the two folding plates, away from the driving strip, is provided with an oval hole. The upper ends of the two key rods extend into the key box. The upper end of each key rod is inserted into the oval hole through a first bent hook, and the lower end thereof is provided with a second bent hook opposite to the first bent hook. The invention has good theftproof effect, and the unlocking device has lower mutual unlocking rate.
Description
Technical field
The present invention relates to a kind of theftproof self-locking type manhole cover and tripper thereof.
Background technology
The engineerings such as sewer that match with urban construction involve the inspection shaft lid, because common inspection shaft lid is very easily stolen, pedestrian, vehicle are threatened, and become unsafe factor; And, after the inspection shaft lid is stolen, need reinstall the inspection shaft lid, strengthened cost.
Summary of the invention
Technical problem to be solved by this invention provides the preferable theftproof self-locking type manhole cover of a kind of anti-theft effect, efficiently solves the stolen problem of inspection shaft lid.
For solving the problems of the technologies described above; Theftproof self-locking type manhole cover provided by the invention, it comprises upper cover plate, following block, the central area of following block has through hole; The hole wall of through hole is provided with boss; The upper cover plate load is put on boss through hole is hidden, and the downside outer rim place of upper cover plate is uniformly distributed with at least two self-locking devices, has a unlock hole corresponding to each self-locking device place on the upper cover plate; Described each self-locking device comprises the hinged tapered end of hinged seat, top and hinged seat that is installed in the upper cover plate downside; The upper end of tapered end is provided with one and stretches to first of upper cover plate center and extend ear; The lower end of tapered end is provided with one and stretches to the second extension ear of upper cover plate outer rim; First extend ear weight greater than second extend ear weight, second extends ear fastens with boss, the first extension ear and a corresponding unlock hole near.
For can concise description for the purpose of the problem, below theftproof self-locking type manhole cover according to the invention be all abbreviated as this inspection shaft lid.
When this inspection shaft lid is installed, the upper cover plate load is put on boss through hole covering, two tapered ends are in the through hole, for each tapered end; Because the top and the hinged seat of tapered end are hinged, first extends the weight of the weight of ear greater than the second extension ear in addition, like this; It will be center of rotation with the articulated position of tapered end top and hinged seat that the first extension ear, second extends ear; Respectively downwards, rotate to the top, let second extend ear free-end snap in and be positioned at the downside of boss, making wins extends ear, second and extends ear around described center of rotation and keep dynamic equilibrium; At this moment, this inspection shaft lid installs and realizes self-locking.
After adopting said structure, because of the downside outer rim place of upper cover plate is uniformly distributed with at least two self-locking devices, second in each self-locking device extends ear and fastens with the interior boss of following block; Even the burglar adopts general purpose tool also can't unblank at all, like this, making does not have the burglar of correct Solution locking device to unblank; Only have and just can unblank the while with the correct Solution locking device that two first extension ears play a supporting role; So the anti-theft effect of this inspection shaft lid is preferable, efficiently solve the stolen problem of inspection shaft lid.
The quantity of said self-locking device and unlock hole is 4.
Another technical problem to be solved by this invention provides the tripper of the low theftproof self-locking type manhole cover of a kind of mutual opening rate.
For solving the problems of the technologies described above, the tripper of theftproof self-locking type manhole cover provided by the invention, it comprises a spoon box, spoon body, two spoon bars, is arranged on two two flaps and at least one spring in spoon box;
The spoon body is made up of transmission handle, the square transmission bar that is arranged in spoon box, and the width either side of transmission handle and transmission bar is affixed and stretch out a spoon box;
Spring is positioned at the width opposite side of transmission bar, the two ends of spring respectively with the width opposite side of transmission bar respective side walls Elastic Contact with the spoon box;
Two two flaps are affixed with the length direction two ends of transmission bar respectively, have the oval hole of extending along this plate body length direction on that plate body away from the transmission bar in each two flap;
The upper end of two spoon bars puts in spoon box and respectively near two oval holes, the upper end of each spoon bar is equipped with first crotch, and first crotch inserts in the corresponding oval hole, the lower end of each spoon bar be equipped with corresponding first crotch towards the second opposite crotch.
For can concise description for the purpose of the problem, below the tripper of theftproof self-locking type manhole cover according to the invention be all abbreviated as this tripper.
The releasing process of this tripper is: the below that two unlock holes in lower end of two spoon bars is reached upper cover plate; Let two second crotches be positioned at two first and extend the ear place; Hold spoon box and the pinching transmission handle of exerting oneself (it is interior that at this moment, spring shrinks, the middle part of transmission handle puts in spoon box), through the drive of transmission bar, two two flaps; Making two spoon bars drive two second crotches rotates to an angle towards the direction of extending ear near two first; Let two second crotches contact with two first extension ears again, and upwards promote two second crotches, ear is extended in drive first, the second extension ear is a center of rotation with the articulated position of tapered end top and hinged seat; Respectively to top, rotation downwards; Make second to extend of the downside disengaging of the free-end of ear, break the first extension ear, second and extend the dynamic equilibrium of ear, realize release around said center of rotation from boss.At this moment, can open this inspection shaft lid with upper cover plate from proposing the block down.
The process of extracting this tripper is: unclamp that hand that pinches the transmission handle; Spring discharges, stretch out in the spoon box at the middle part of transmission handle; Through the drive of transmission bar, two two flaps, make two spoon bars drive two second crotches and rotate to an angle towards the direction of extending ear away from two first, let two second crotches and two first extension ears be separated; And move two spoon bars towards the direction of upper cover plate upside, two spoon bars are proposed from two unlock holes.
After adopting said structure; Because of this tripper comprises a spoon body, two spoon bars, is arranged on two two flaps and at least one spring in spoon box; The upper end of each spoon bar is all hinged with one two corresponding flap through first crotch; The lower end of each spoon bar be equipped with corresponding first crotch towards the second opposite crotch, like this, this tripper system cooperates with two first extension ears through two second opposite toward each other crotches works; Two second crotches of two spoon bar lower ends pass two unlock holes and touch, set correctly two first simultaneously and extend ears and just can unblank, and make that the mutual opening rate of this tripper is lower.
The quantity of said spring is 2, and two springs are in the length direction both sides of transmission bar respectively.
Description of drawings
Fig. 1 is the stereogram that this inspection shaft lid is seen from bottom to top;
Fig. 2 is the upward view of this inspection shaft lid;
Fig. 3 is the A-A revolved sectional view of Fig. 2;
Fig. 4 is the stereogram (removing the top cover of spoon box) that this tripper is seen from top to bottom;
Fig. 5 is this inspection shaft lid and two these trippers stereogram when being used.
The specific embodiment
To combine accompanying drawing that the present invention is specifically described below:
Referring to Fig. 1-Fig. 5:
This inspection shaft lid comprises upper cover plate 1, following block 2; The central area of following block 2 has through hole 21; The hole wall of through hole 21 is provided with boss 22, and upper cover plate 1 load is put on boss 22 through hole 21 is hidden, and the downside outer rim place of upper cover plate 1 is uniformly distributed with four self-locking devices; Have an oval shape unlock hole 11 corresponding to each self-locking device place on the upper cover plate 1; Four unlock holes 11 layout that is square, the length direction of unlock hole 11 is consistent with the fore-and-aft direction of following block 2, and the left and right directions of the width of unlock hole 11 and following block 2 is consistent.
Each self-locking device comprises the hinged tapered end 14 of hinged seat, top and hinged seat that is installed in upper cover plate 1 downside, and hinged seat comprises first otic placode 12 and second otic placode 13 that is parallel to each other.The length of first otic placode 12 is greater than the length of second otic placode 13; For two self-locking devices on two self-locking devices in left side and right side; Two first otic placodes 12 each other near, for two self-locking devices of two self-locking devices of front side and rear side, two second otic placodes 13 each other near; For a corresponding self-locking device that is provided with, an oval shape unlock hole 11 on the position, first otic placode 12, second otic placode 13 and angle between the unlock hole 11 length direction center lines are 45 to spend.The upper end of tapered end 14 is provided with one and stretches to first of upper cover plate 1 center and extend ear 15; The lower end of tapered end 14 is provided with one and stretches to the second extension ear 16 of upper cover plate 1 outer rim; First extends the weight of the weight of ear 15 greater than the second extension ear 16; Second extends ear 16 fastens with boss 22, first extend ear 15 and a corresponding unlock hole 11 near.
This tripper comprises spoon box 31, spoon body, two spoon bars 34, is arranged on two two flaps 37 and two springs 39 in spoon box 31.The spoon body is made up of transmission handle 32, the square transmission bars 33 that are arranged in spoon box 31, and transmission handle 32 is affixed and stretch out spoon box 31 with the width either side of transmission bar 33.Two springs 39 are positioned at the width opposite side of transmission bar 33, and two springs 39 are in the length direction both sides of transmission bar 33 respectively, the two ends of spring 39 respectively with the width opposite side of transmission bar 33 respective side walls Elastic Contact with spoon box 31.Two two flaps 37 are affixed with the length direction two ends of transmission bar 33 respectively, have the oval hole 38 of extending along this plate body length direction on that plate body away from transmission bar 33 in each two flap 37.The upper end of two spoon bars 34 puts in spoon box 31 and respectively near two oval holes 38; The upper end of each spoon bar 34 is equipped with first crotch 35; First crotch 35 inserts in the corresponding oval hole 38, the lower end of each spoon bar 34 be equipped with corresponding first crotch 35 towards the second opposite crotch 36.
When this inspection shaft lid is installed; Upper cover plate 1 load is put on boss 22 through hole 21 coverings, four tapered ends 14 are in the through hole 21, for each tapered end, because the top and the hinged seat of tapered end 14 are hinged; First extends the weight of the weight of ear 15 greater than the second extension ear 16 in addition; Like this, it will be center of rotation with the articulated position of tapered end 14 tops and hinged seat that the first extension ear 15, second extends ear 16, distinguishes downwards, rotates to the top; Let second extend ear 16 free-end snap in and be positioned at the downside of boss 22; Making wins extends ear 15, the second extension ear 16 is around described center of rotation and keep dynamic equilibrium, and at this moment, this inspection shaft lid installs and realize self-locking.
The releasing process of two these trippers is (is that example describes with this tripper): the below that two unlock holes 11 in lower end of two spoon bars 34 is reached upper cover plate 1; Let two second crotches 36 be positioned at two first and extend ear 15 places; Hold spoon box 31 and pinching transmission handle 32 (at this moment, spring 39 shrinks, the middle part of transmission handle 32 put in spoon box 31) firmly, through the drive of transmission bar 33, two two flaps 37; Making two spoon bars 34 drive two second crotches 36 rotates to an angle towards the direction of extending ear 15 near two first; Let two second crotches 36 contact with two first extension ears 15 again, and upwards promote two second crotches 36, ear 15 is extended in drive first, the second extension ear 16 is a center of rotation with the articulated position of tapered end 14 tops and hinged seat; Respectively to top, rotation downwards; Make second to extend of the downside disengaging of the free-end of ear 16, break the first extension ear 15, second and extend the dynamic equilibrium of ear 16, realize release around said center of rotation from boss 22.At this moment, can open this inspection shaft lid with upper cover plate 1 from proposing the block 2 down.
The process of extracting two these trippers is (is that example describes with this tripper): unclamp that hand that pinches transmission handle 32; Spring 39 discharges, stretch out in spoon box 31 at the middle part of transmission handle 32; Drive through transmission bar 33, two two flaps 37; Making two spoon bars 34 drive two second crotches 36 rotates to an angle towards the direction of extending ear 15 away from two first; Let two second crotches 36 and two first extension ears 15 be separated, and move two spoon bars 34, two spoon bars 34 are proposed from two unlock holes 11 towards the direction of upper cover plate 1 upside.
Above-described only is one embodiment of the present invention.Should be pointed out that for the person of ordinary skill of the art under the prerequisite that does not break away from the principle of the invention, can also make conspicuous some conversion or alternative and remodeling, these also should be regarded as belonging to protection scope of the present invention.Such as: the bottom of each spoon bar is provided with a ring-type positioning step that plays suggesting effect; The outer ring diameter of positioning step is greater than the width of unlock hole; Like this, two unlock holes in lower end with two spoon bars reach upper cover plate below process in, when positioning step contacts with the end face of upper cover plate; Show that two second crotches just are positioned at two first and extend the ear place; Make two second crotches accurately to put in place, be convenient to two second crotches and two first stable contacts of extension ear, to realize release; In addition, the quantity of self-locking device and unlock hole also can determine as the case may be flexibly.
Claims (2)
1. the tripper of theftproof self-locking type manhole cover comprises a spoon box, it is characterized in that:
It also comprises a spoon body, two spoon bars, is arranged on two two flaps and at least one spring in spoon box;
The spoon body is made up of transmission handle, the square transmission bar that is arranged in spoon box, and the width either side of transmission handle and transmission bar is affixed and stretch out a spoon box;
Spring is positioned at the width opposite side of transmission bar, the two ends of spring respectively with the width opposite side of transmission bar respective side walls Elastic Contact with the spoon box;
Two two flaps are affixed with the length direction two ends of transmission bar respectively, have the oval hole of extending along this plate body length direction on that plate body away from the transmission bar in each two flap;
The upper end of two spoon bars puts in spoon box and respectively near two oval holes, the upper end of each spoon bar is equipped with first crotch, and first crotch inserts in the corresponding oval hole, the lower end of each spoon bar be equipped with corresponding first crotch towards the second opposite crotch.
2. the tripper of theftproof self-locking type manhole cover according to claim 1, it is characterized in that: the quantity of said spring is 2, and two springs are in the length direction both sides of transmission bar respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101438481A CN101798819B (en) | 2010-04-08 | 2010-04-08 | Theftproof self-locking type manhole cover and unlocking device thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101438481A CN101798819B (en) | 2010-04-08 | 2010-04-08 | Theftproof self-locking type manhole cover and unlocking device thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101798819A CN101798819A (en) | 2010-08-11 |
| CN101798819B true CN101798819B (en) | 2012-01-11 |
Family
ID=42594650
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010101438481A Expired - Fee Related CN101798819B (en) | 2010-04-08 | 2010-04-08 | Theftproof self-locking type manhole cover and unlocking device thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101798819B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2751121Y (en) * | 2004-12-17 | 2006-01-11 | 崔所林 | Anti-theft lock and key for well cover |
| JP2009114684A (en) * | 2007-11-05 | 2009-05-28 | Miwa Lock Co Ltd | Lock for manhole cover |
| CN201627212U (en) * | 2010-04-08 | 2010-11-10 | 李锘澄 | Antitheft self-locked inspection well cover and unlocking device thereof |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0737728B2 (en) * | 1991-02-14 | 1995-04-26 | 長島鋳物株式会社 | Locking device for underground structures |
| JPH11193541A (en) * | 1997-12-29 | 1999-07-21 | Takiron Co Ltd | Lock device of protection cover |
-
2010
- 2010-04-08 CN CN2010101438481A patent/CN101798819B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2751121Y (en) * | 2004-12-17 | 2006-01-11 | 崔所林 | Anti-theft lock and key for well cover |
| JP2009114684A (en) * | 2007-11-05 | 2009-05-28 | Miwa Lock Co Ltd | Lock for manhole cover |
| CN201627212U (en) * | 2010-04-08 | 2010-11-10 | 李锘澄 | Antitheft self-locked inspection well cover and unlocking device thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101798819A (en) | 2010-08-11 |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120111 Termination date: 20120408 |