CN100422573C

CN100422573C - Locking device and method for catch basin and manhole covers

Info

Publication number: CN100422573C
Application number: CNB038194570A
Authority: CN
Inventors: 大卫·M·斯塔德勒
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-08-12
Filing date: 2003-08-12
Publication date: 2008-10-01
Anticipated expiration: 2023-08-12
Also published as: JP4824094B2; CN1692231A; JP2005535804A; WO2004015212A3; AU2003264055A8; EP1534965A2; CA2495662C; EP1534965A4; JP2009150217A; WO2004015212A2; EP1534965B1; CA2495662A1; ZA200502135B; AU2003264055A1; AP2005003254A0; JP4321775B2; AP1971A

Abstract

A locking device and method for securing a cover as for a catch basin or manhole in position including two elongate members pivotally connected together end to end so as to be able to articulate. The members are held aligned while being inserted through a cover opening suspended in said opening on a flange on the upper member, the lower member then released to be angled by a spring force to wedge against sidewall and an edge of the cover opening. A bolt extending through the top threaded into a trunnion extending across an intermediate space of the lower member draws the lower member up to create a powerful wedging action to prevent cover removal. The bolt head is recessed into the flange and configured with a special shape engageable only with a special tool to be tamper resistant. A protective plastic cap covers the bolt head and has protrusions sheared off when the cap is removed to provide a tamper indication. A miniature radio transmitter can be installed beneath the cap to transmit an alarm signal when the cap is removed. The locking device is used with a modified manhole cover by installing an adaptor sleeve defining a rectangular opening through which the locking device is inserted, and by connecting an extension arm to the lower member bottom end by use of a shear pin and pivot bolt allowing release of the locking device and cover in the event of an explosion.

Description

The method and apparatus of locking manhole and following puddle lid

Technical field

The present invention relates to a kind of locking device and method, more particularly, relate to a kind of like this equipment and method, it is applied to be installed on the road so that near for example following puddle (catch basin) of facilities such as water, gas, communication, electric power and the lid of manhole.

Background technique

These lids are used to stop the supporting surface that minces simultaneously also as pedestrian on the road surface and vehicle.If lose these lids, the following puddle and the manhole that expose will jeopardize pedestrian and vehicle.Having things stolen of these lids is serious day by day, fixes them thereby press for certain device.Existing puddle down and manhole cover do not have locking device, so a kind of simple modifications to existing lid is preferably arranged.This equipment must be enough firm in to stand various traffic and weather conditions and can resist the thief.Because enormous amount, so must install simply to reduce labor cost.This equipment can not cause obstacle on road, especially for the shovel snowplow, the pedestrian can not stumble.

Summary of the invention

An object of the present invention is to provide a kind of locking device and method, it can be as to a kind of simple modifications of the lid in existing manhole and following puddle and installation apace.

Another object of the present invention provides a kind of equipment, and it is enough firm, can be through being mechanically damaged the traffic with heavy load, and can reliably lid be fixed in its position and but not cause road barrier.

In order to reach purpose of the present invention, the invention provides a kind of locking device, it can insert an opening of the sidewall of contiguous cover frame on the lid.Described equipment comprises upper-part and lower member, thereby they are connected to each other end-to-end and allow hinged described lower member so that described equipment to be installed, and described parts initially are made as and align end-to-end and insert described cover gab.Described parts keep end-to-end homogeneous are had the detent mechanism of (interfit) using pawl to brake spare of stinging mutually, thereby and described parts are fixed on its position by one or more springs and move described parts to together power and keep with the described using pawl to brake spare of stinging mutually and cooperate to apply one.

Bolt that has a bolt head that prevents to be touched passes a hole on the described upper-part and is received in the crosshead parts left-handedly, described crosshead parts install on the lower member in rotatable mode, extend through the space that sidewall limited that is comprised by described lower member.Described bolt can be depressed the diapire that props up described upper-part offsetting spring force, thereby allows the described using pawl to brake spare of stinging mutually to break away from.Described then spring make described lower member on described crosshead with respect to the upper-part pivoted, and the angle that forms towards the sidewall of contiguous described opening cooperates with described sidewall until the bottom of described lower member.Bottom edge along the described lower member that cooperates with described sidewall preferably has tooth.

Cutout profiles on the upper end of lower member moves the edge with the lid opening that cooperates this equipment of insertion simultaneously.

Utilize a special socket tool to drive described bolt then on its hand of spiral and be connected with described crosshead with the described lower member of pull-up, described upper-part has a flange that covers described lid so that a reaction surface to be provided.This has just formed very big lower member between described sidewall and edge of opening wedging action prevents that this side of lid is lifted.By four locking devices are installed, two on each limit of lid, lid just by wedging securely on its position in case removed.Bolt head is contained in the depression on the upper-part top, and has and need the driving of special tool(s) profile in case remove locking device with common instrument.

The cap of the plastics of bolt head loam cake in described depression in case bolt be etched and enter the mouth by the dirt obstruction of mincing.Special cap can also provide the indication of being touched when it is removed.

A special version of described equipment is used for manhole cover, and one of them conforming sleeves is loaded into one and pierces the circular hole in the manhole cover and use the bolt that is contained in the tapped hole that is formed at the manhole cover downside to lid.Described upper-part is contained in the center rectangular aperture on the conforming sleeves, and described upper-part has round flange, and described round flange covers the top surface of the contiguous rectangular aperture of conforming sleeves smoothly.

Article one, adjutage is fixed to the bottom of described lower member so that the toothed base of adjutage can reach the sidewall edge of the manhole opening that inserts away from locking device.Described adjutage utilizes pivot bolt to be connected with shear pin, makes lid can be released also free explosion in case structural failure when blasting.Thereby conforming sleeves has the perforated wall that stretches out to have the edge that can engage with the cutout profiles of lower member downwards, thereby forms the similar wedge-lock of puddle version locking device down.

Can also in described cap, insert a special wireless signal equipment, thereby when finding to have the people to touch locking device, provide remote alarm to central station, but also can be used to locate the following puddle that has been removed or has touched lid by the relaying amplifying system.

Description of drawings

Fig. 1 is the explosive view of locking device of the present invention.

Fig. 2 is the front view of locking device of the present invention.

Fig. 3 is the rear view of the locking device among Fig. 1 and 2.

Fig. 4 is that the locking device among Fig. 1-3 is inserted into down the side view in the lid of puddle.

Fig. 5 is the side view that the locking device that inserts among Fig. 4 is in the hinged state of parts up and down.

Fig. 6 shows the anti-plan view of touching the upper-part of bolt shape.

Fig. 7 is the upper-part side view that dotted line is represented, show anti-touch bolt on head tegmentum a cap that covers described upper member recess.

Fig. 8 is the perspective view of plastics flange cap shown in Figure 7.

Fig. 9 is according to the plan view that has the following puddle lid of four locking devices.

Figure 10 is the skeleton diagram that the cap of wireless transmission monitor unit is installed.

Figure 11 is the side view of the locking device of manhole cover shown in being revised as of installing is fit to, and contiguous manhole cover frame sidewall profile has only shown a part.

Figure 12 is the front view of the lower member of manhole cover locking device shown in Figure 11, contains mounted wall extension.

Figure 13 is the planimetric map that the manhole cover of locking device has been installed.

Figure 14 is the partial view of manhole cover and conforming sleeves, shows to connect hangers and bolt.

Embodiment

In the following detailed description, for clarity sake will use some particular term and a specific embodiment will be described.But should understand this is not construed as limiting the invention.

With reference to accompanying drawing, locking device 10 of the present invention is designed at first insert the opening 12 that covers the following puddle lid 14 on the opening that sidewall 16 limited.

Locking device 10 comprises the upper and

lower parts

18,20 of the appropriateness elongation of general rectangular, and they preferably are made of high tensile steel and to allow hinged mode to link together end-to-end.Before the installation, upper and

lower parts

18,20 are placed to the end-to-end aligned position shown in Fig. 2 and 4.Upper-part 18 tops have a flange 22, and it covers the cap structure of adjacent openings 12, pass opening 12 and are hung in locking device under the lid 14 to tangle.The edge of flange 22 is smeared circle and is level and smooth profile.

Upper-part 18 is roughly rectangle, and its size makes between its wall that can be contained in lower member 20 24.Upper-part 18 has a rectangle dag 26 in a side of radiused bottom 28, and it is nested in the rectangular depression 30 on the filar cross 32 that extends after the lower member 20 between the wall 24.Dag 26 and depression 30 form the using pawl to brake spare of detent mechanism, thereby by preventing that lower member 20 is around crosshead 40 rotations, can the mode of getting loose keeping upper and

lower parts

18,20 at they initial aligned positions.Described detent mechanism also comprises one or more springs 34, and each all is connected to upper and

lower parts

18,20 at two ends.

For this reason, slotted ears 36 is formed at the bottom of a side of upper-part 18, and slotted ears 38 is formed at the opposite side of lower member 20 in the wall 24.Spring 34 extends to slotted ears 38 around crosshead 40 downwards, and the upper and

lower parts

18,20 of the cooperation that is tending towards keeping dag 26 and depression 30 are applied end-to-end pulling force.

Because spring 34 is around crosshead 40, thus relatively rotating of upper and

lower parts

18,20 also impelled, but 30 nested cooperations stop in case upper and

lower parts

18,20 rotate around crosshead 40 with depression by dag 26.

Upper-part 18 has depression on the top, is made of the cylindrical hole 42 that extends to diapire 44.The less through hole 46 of the diameter of an alignment passes diapire 44 and slidably holds bolt 48.Bolt 48 has anti-50 (see figure 6) of shape and the left-handed threaded body 52 touched, with extend through crosshead 40 penetrate cross-drilled hole 54 screw-thread fit.Rotatable in the aligned hole 56 of crosshead 40 on wall 24.Bolt 48 is loaded onto at the very start in order to avoid cooperate with diapire 44.

Inserting locking device 10 after the opening 12, bolt head 50 is depressed and props up diapire 44 and leave upper-part 18 against spring 34 lower member 20 is depressed.

This just will cave in and 30 move down breaking away from dag 26, so spring makes lower member 20 rotate around crosshead 40, as shown in Figure 5, engage with following puddle sidewall 16 up to toothed bottom 58.

Simultaneously, the cutout profiles 60 on each wall 24 top all forms the angle (seeing Figure 4 and 5) towards the feather edge 62 of the opening 12 of lid 14.

Come swivel bolt 48 by the special socket tool (not shown) of the unequal plane (see figure 7) of the angle on the use energy fitted bolt head 50 then.The size of drainage openings 70 allows described instrument fitted bolt head 50 but institute's not enough active tool in the gap of staying enters in case touched by the people.

The propelling of bolt 48 make the now articulated lower member 20 of its left hand thread engagement lifting with securely with its wedging between sidewall 16 and feather edge 62.When two ground, four locking devices, 10 one side install, just can prevent that lid 14 is removed.

Plastic cap 66 (seeing Fig. 7,8) is used for being contained on the bolt head 50 in case mince and enters gap around bolt head 50.

Cap 66 has projection 68 at 69 places, position that limited by groove 67, snaps in the drainage openings 70 of 42 bottoms, hole that are located at upper-part 18.Hole 42 be formed with shallow slot 65 to help aligned projection 68 and shallow counterbore 61 to hold cap flange 63.When removing cap 66,, projection 68 touched thereby will damaged showing with the hole, cave 72 on the fork class instrument cooperation cap.

Figure 10 has shown a micro transmitting set-battery unit 78 that is installed under the cap 66, and it can be through relaying amplifying system emission remote signal.In case remove cap 66, wireless signal will interrupt, thereby triggers long-range alarm.This signal also can change the following puddle that the location does not have lid into.

Locking device 10 can be adapted as and be used for manhole cover 80, as shown in figure 11, its mesopore 82 creeps into the following of manhole cover 80 so that hold by hangers 85 and bolt 87 and be contained in conforming sleeves 84 in the hole 82, and bolt 87 screws in the hole 89 (Figure 14) that cars go out below the lids 80.A rectangular aperture 86 is formed on the conforming sleeves 84, penetrates sleeve 84 fully.Edge 88 is formed on the downside of sleeve 84, is positioned to cooperate as previously mentioned with cutout profiles 60.The lower end of conforming sleeves 84 is cut off an angle, as shown in figure 11, so that provide the gap normally hinged to lower member 20.

Lower member 20 is fixed with adjutage 90, has pivot bolt 91 and shear pin 92, and has the toothed end that can engage with manhole 94.If blast, shear pin 92 is cut off, and adjutage 90 freely swings and the free explosion of lid 80 permissions around the axle of pivot bolt 91.

Second bolt 96 be installed in manhole cover 80 below, near the opposite side of manhole cover flange 100.Alternatively, second sleeve and locking assembly can be installed and replace separating 180 ° bolt 96.

Claims

1. locking device is used for the lid in the zone that ground, cover part limits by sidewall, and all frames are around the opening that extend in described zone and described lid has contiguous one side, and described equipment comprises:

Upper-part, top have flange and tangle on described lid with the described upper-part that will stretch into described opening;

Extend into described flange and terminate in the depression of diapire;

And extend into described diapire and pass the hole of described upper-part lower end;

Bolt slidably is contained in the described hole and the bottom of stretching out described upper-part, and described bolt has the bolt head that is contained in the described depression;

Lower member has the wall that limits a space, this space of packing into, the lower end of described upper-part, and described bolt screws in the tapped hole of crosshead, and described crosshead is supported in the described lower member in rotatable mode and extends through described space;

At least one spring, an end connects described upper-part, and the other end connects described lower member, and described at least one spring is installed to such an extent that impel described two parts to further on end-to-end direction, and impels two parts to relatively rotate with mutually hinged around described crosshead; Detent mechanism comprises the first using pawl to brake spare on the bottom of described upper-part and the second using pawl to brake spare that cooperates with the described first using pawl to brake spare on the described lower member, and described two parts offset end-to-end and relatively rotate with the described crosshead of lap guard; Described bolt can push away described upper-part with described lower member against the spring force of described at least one spring so that described using pawl to brake spare breaks away from, thereby allows described two parts hinged by rotating around described crosshead.

2. locking device as claimed in claim 1, wherein said lower member is formed with at least one cutout profiles on the top, it gets loose and described lower member is rotated edge with the described opening that cooperates described lid when being rotated by described at least one spring at described using pawl to brake spare.

3. locking device as claimed in claim 2, the bottom of wherein said lower member is formed with tooth, engages described sidewall when described upper and lower parts are hinged, to form wedging action between described lower member, described sidewall and described edge of opening.

4. locking device as claimed in claim 3, the reaction that advance past the bolt head that with the diapire of described depression engage of wherein said bolt in the tapped hole of described crosshead makes described lower member lifting increasing wedging action, thereby increases between the tooth of lower end of described lower member and the described sidewall and the pressure between described cutout profiles and the described edge of opening.

5. locking device as claimed in claim 1, wherein said bolt head has irregular contour, only can cooperate in case touched by the people with particular tool after described bolt is tightened.

6. locking device as claimed in claim 5 is enclosed in the described depression after wherein said bolt head is tightened substantially.

7. locking device as claimed in claim 6 also comprises on the bolt of a molded plastic cap in described depression.

8. locking device as claimed in claim 7, wherein said cap in case install just have at least one projection to be contained in the cave in the described depression, and described at least one projection can be out of shape to show once when described cap is removed and be touched by the people.

9. locking device as claimed in claim 1, the described wall of wherein said lower member is the wall of a pair of spaced apart parallel, limit the described space that holds described upper-part, described wall connects in the bottom of described lower member, and described crosshead is contained in the aligned hole of described wall.

10. locking device as claimed in claim 9, the hole alignment on another wall of Kong Douyu that forms on each wall of wherein said lower member, described crosshead slidably is contained in the described hole.

11. locking device as claimed in claim 10, wherein said crosshead is positioned at the neutral position of the length of described lower member.

12. locking device as claimed in claim 1, wherein at least one spring is two springs, wherein each of two springs all is connected respectively to an end of described upper and lower parts, described spring one end is connected to a side of parts, the other end is connected to the opposite side of another parts, thereby forms the rotating force that is stopped by described detent mechanism.

13. locking device as claimed in claim 12, wherein said spring is all partly twining described crosshead when described upper-part extends to described lower member.

14. locking device as claimed in claim 1, one of wherein said two using pawl to brake spare are that one of described two parts are gone up outstanding flat piece, one is the depression on another parts, and when described two parts were in end-to-end aligned position, described flat piece covered described depression.

15. locking device as claimed in claim 7 also comprises the transmitting set that is positioned under the described cap and launches a signal when described cap is removed.

16. being manhole cover and comprising, locking device as claimed in claim 1, wherein said lid be installed in conforming sleeves in the described manhole cover that is formed with opening.

17. locking device as claimed in claim 16 also comprises adjutage, is installed to the lower end of described lower member, can engage with manhole.

18. locking device as claimed in claim 17, wherein said adjutage is connected to described lower member by shear pin, and the power of the scheduled intensity of described shear pin meeting is cut off to unclamp described locking device when blasting.

19. the method that the lid that will be covered with partly the space that is limited by sidewall is fixed in its position, described cap recess are in frame and have the opening that penetrates of contiguous described sidewall, its step comprises:

Pivotally connected end-to-end upper and lower parts are to together, so that can hinged described upper and lower parts;

By described lower member is pivotally connectedly formed an angle with respect to described upper-part around described, a kind ofly make described two parts be tending towards hinged power thereby form;

When described two parts are inserted described lid opening, they are alignd end-to-end and hold their alignment against described trying hard to keep;

Hang described two parts that connecting on the opening of described lid;

Unclamp described two parts to allow them hinged; And

The bottom of described lower member engaged with described sidewall and simultaneously with the edge join of the upper surface and the described lid opening of described lower member, thus with the lower member wedge betwixt so that described lid is fixed in its position.

20. method as claimed in claim 19, also be included in described sidewall and lid opening edge join after, to the described lower member of described upper-part lifting, increasing described wedging action power, thereby described lid and described frame are closed tightly.

21. comprising at least one stretched spring is connected to, method as claimed in claim 20, the step of the described power of wherein said formation be tending towards making described two parts on the described upper and lower parts around the hinged position of described pivotally connected generation.

22. method as claimed in claim 20, wherein said pivotally connected described upper and lower parts comprise to together step rotating crosshead are installed to described lower member, and described crosshead and the hole of the diapire that extends through described upper-part and the bolt that penetrates the screw thread cross-drilled hole on the described crosshead carried out screw-thread fit, the bolt head of described bolt can lean against on the described diapire.

23. method as claimed in claim 22 wherein be included in the described bolt of rotation in the screw thread cross-drilled hole of described crosshead to the step of the described lower member of described upper-part lifting, and described bolt head props up described diapire.

24. method as claimed in claim 19, the step of wherein said suspension two parts are included in and form the lip-deep flange that leans against contiguous described lid opening on the described upper-part.

25. method as claimed in claim 22, also be included in described only can with bolt head that special tool(s) cooperates on form matching surface, and advance described bolt in case touched by the people with described special tool(s).

26. method as claimed in claim 25 also comprises described bolt head is absorbed in being formed on the described upper-part forming in the lip-deep flange that leans against contiguous described lid opening.

27. method as claimed in claim 26 also is included on the described bolt head to install and indicates whether the plastic cap touched.

28. method as claimed in claim 27 also is included on the described lower member and forms the profile that can firmly block with described lid opening edge.

29. method as claimed in claim 19, wherein keep the step of described two parts alignment to be included in formation using pawl to brake spare on the described upper and lower parts, and when described upper and lower parts are inserted described lid opening, allow using pawl to brake spare cooperate, and the cooperation of unclamping them is subsequently carried out hinged to allow described upper and lower parts.

30. method as claimed in claim 19, wherein said method is applied to manhole cover by a conforming sleeves at first is installed on the lower surface of described lid, described manhole cover has the rectangular aperture that holds according to a described locking device among the claim 1-18.

31. method as claimed in claim 30 also comprises the bottom that can be installed to described lower member by shear pin with the adjutage that the sidewall of described manhole engages, described shear pin can unclamp described locking device when blasting.

32. method as claimed in claim 19 also comprises a plurality of opposite sides that arrive described lid according to each described locking device among the claim 1-18 is installed.

33. method as claimed in claim 31 comprises that also construction bolt arrives the following contiguous manhole cover flange place of described manhole cover, in case lift the both sides of described manhole cover simultaneously.

34. a system that locks enclosure body comprises

The lid of described enclosure body;

According to described locking device among the claim 1-18, be contained in the lid opening; With

Sleeve barrel tool can engage with the described bolt head of the bolt of described locking device, is used for swivel bolt.