CN101052769A - Safety manholes - Google Patents

Abstract

The invention relates to a security device that is secured to the mouth of an underground pipe (4) including an edge (2) and a hinged cover (5) having rising cylinders (6), a peripheral sealing gasket (30) being provided for. The cover (5) includes an opening provided with a screw fixed lid (8), one of the screws compresses a first electrical contact (9) sending a warning signal to a control center. Underneath the lid is provided a turning part (10) pulling in an angular fashion a closing handle (14) provided onto the edge. In the closed position, said handle (14) is located on top of the plate (18) integral with said edge (5), both having an access ramp providing automatic pre-closing. The closing position is provided through a second electrical contact (19). In the opening position, the closing handle (14) is retained by retention pawl (15) hinged to the edge (2). Release is provided through a screw (21) fixed to the cover (5) upon contact with said retention pawl (15).

Description

Safety manholes

As described in the title of present disclosure, the present invention relates to a kind of safety device, described safety device is compared than common closed-system, produces significantly favourable characteristics, and safety device is that machinery and manual safety sealing provide the initial preliminary closure stage and the stage of another complete hermetic seal.It is the secure closed at the ground line place, and comprises fixing edge and radial type lid, and articulated lid is by raising help, and what rising helped to cover opens, and a peripheral liner is arranged simultaneously.

At present, among main infrastructure such as harbour, aerodrome etc., they electric, optical fiber and other facility all are to be laid in the underground pipeline of length very, described underground pipeline is connected to the outside by some access hole, above-mentioned access hole has their corresponding closing lids, and these closing lids are provided with in a certain distance apart from one another.The lid of those access hole flushes with ground line.

Entering underground pipeline and be the lid of opening the access hole top by the trip bolt that unloads them simply accomplishes.This operation is implemented simple with general tool and is made things convenient for.

In case lid is opened, operating personnel enter in the underground pipeline with regard to oneself, so that carry out his task, no matter these tasks relate to repairing, inspection, maintenance etc., and operating personnel must come out by same a bite that he enters, because can not open internally or closing lid.Therefore, in case operating personnel have entered pipeline so that carry out his task, access hole all stays open, and this means that unauthorized people can enter the inside of pipeline.

These lids are that operating personnel must be same mouthful by the mouth that enters with him and come out from another shown shortcoming of external control easily, the problem of Chan Shenging is thereupon, owing to have only an exit route, concerning him, mean since emergency as catching fire, operating personnel may find that he is absorbed in the sea of fire.

In addition, importantly the sealing by the access hole corresponding lid should seal, so that underground pipeline and outside are isolated fully, therefore prevents that inside from leaking, entering insect etc., and thereby makes those facilities remain in perfect condition.

Therefore, the objective of the invention is to create a kind of new safety device, because the result that terrorist's activity of carrying out at the international level recently increases day by day, new safety device solves by terrorist or other external staff and invades possibility in the underground pipeline, terrorist or other external staff may nourish vicious intention and handle underground pipeline, and cause serious material damage and casualties.

In this respect, the safety device that forms the object of the invention can be from outside and inner the two open and close, if thereby operating personnel can move around in underground pipeline inside, and needn't return so that the same mouth that enters by him overhauls outside along former road, and can replace and pass nearest whichever mouth and come out, then solved the shortcoming that exists up to now.He has also exempted the contingency possible contingent of appearance and has been absorbed in the danger of pipe interior, because he can go to the pipeline outside by any other access hole.Another major advantage provided by the present invention be same operating personnel when he enters pipeline, can be from the pipe interior closing lid, thereby the personnel without permission that prevent enter.

The prior art level

In the existing various closed-systems that we are concerned about, according to they present structures, lid is sealed to outside degree and depends on its trip bolt institute applied pressure of insertion.

Common closing lid is locked any tamper-proof and alarm mechanism, and the inside that therefore enters underground pipeline is very fragile.

In present some facilities, can only from external opening they, this means that the result is when operating personnel enter the inside of underground pipeline, he must come out by keeping same a bite of opening, and can not come out by mouths different in the pipeline.

Invention description

In general, the safety device that forms goal of the invention can cover with the closed radial type of two steps: the preliminary closure step of beginning and last hermetically enclosed step fully, closed action can be carried out from pipe interior or from the pipeline outside, and its use is selectively for the personnel through mandate.

Most of feature functionality of the present invention is as follows:

-complete hermetically enclosed waterproof.

The state of-remote control sealing.Inspection eye is opened, closure or preliminary closure.

-the anti-terrorism formula is opened automatically internally.

-automatic tamper-proof opening from the outside.

-semi-automatic internally closure.

-semi-automatic closure from the outside.

Automatically open internally and can perhaps below manhole itself, carry out, therefore fulfil the anti-terrorism function from any degree of depth at operating personnel place.

Semi-automatic internally closure can be accomplished that because when closed manhole, it enters the preliminary closure position automatically by operating personnel with a hand, and operating personnel can implement complete closed with the same hand, will see as our back.

Equally, semi-automatic sealing can be implemented from the outside, because when the auto-closing manhole, it also still remains in the preliminary closure position that can be easy to seal from the outside.This sealing is with special-purpose vandal-proof execution of instrument, and above-mentioned instrument is identical with the instrument that is used for implementing to open.

Remote control control manhole in sealing opening or make position the two, and finish the sealing of system.When opening beginning, remote control sends remote signal, and remote control can utilize cable circuit or utilize the signal of signaling switch system reception from the manhole system by GPS, radio etc.

The operation of all systems all is not implement with mechanical means when having external power source.

The radial type lid comprises that a circular open, described circular open have periphery and be staggered, and falls within above-mentioned being staggered with the fastening panel seat of screw.One of them of these screws is pressed on the electric contact, and described electric contact is sent to control centre with alarm signal.In case remove this plate, just run into rotary part, the decline axle of described rotary part equipment one band short column is used to spur close handles, and described close handles is also rotated and is connected on the edge of manhole.This handle comprise can with the claw that becomes another whole parts engagement with lid, these parts have the groove on qualification activity inclined-plane separately.In the position of full rotation, obtain complete closed, when with transmit of the photodetector formation of another signal when contacting to control centre, with this fixed-site.One previous or preliminary closure position is arranged and internally with from the position of outside starting.When closed radial type covers, realized the wherein position of inoperative this partial closure of electric contact, because it is equipped with the position of rotation promotion lock pawl of expansion screw from close handles, close handles is beated, so that occupy the preliminary closure position by means of the help of spring.

Close handles is connected on the edge by supporting member, and above-mentioned supporting member adjustable-height is so that radial type lid position liner thereon can compress gradually and effectively thus, because fastening pressure can be regulated.

According to the present invention, also be provided with on the ladder that is fixed on the duct wall of down-hole, initial vertical component effect office at ladder, has a final folded part, described final folded part can be installed near the top of horizontal underground pipeline in a longitudinal direction, comprises the stop mechanism that is in folding and expanded position simultaneously.

Integral part in order to help to understand characteristics of the present invention and to constitute this manual the present invention includes some accompanying drawings, and described these accompanying drawings provide below based on exemplary rather than restrictive:

Brief description

Fig. 1 a is that the safety device that constitutes the object of the invention covers the diagrammatic elevation view that is shown in an open position under the situation at radial type, and safety device is connected on the mouth of underground pipeline, and can see the ladder that puts down at this place.

Fig. 1 b is the view that is similar to Fig. 1 a, and the radial type lid is closed simultaneously.

Fig. 2 a is the lateral view of safety device shown in Fig. 1 b.

Fig. 2 b is the lateral view of safety device shown in Fig. 1 a.

Fig. 3 is the view that constitutes the safety device magnification ratio of the object of the invention, and lid is opened simultaneously.

Fig. 4 a is the partial view of safety device shown in Figure 3, and described safety device is in the radial type lid position very close to sealing place, comprise simultaneously be attached to cover with the edge on device so that realize according to closed system of the present invention.

Fig. 4 b is the view that is similar to Fig. 4 a safety device, and described safety device is in the close position and does not comprise the edge and become whole element with it, and comprises close handles.

Fig. 5 a is the perspective illustration that closed-system is shown in an open position.

Fig. 5 b is and the similar perspective illustration of Fig. 5 a that closed-system is in locked position.

Fig. 6 be when radial type lid be shown in an open position and can be when becoming whole expansion screw and drive with above-mentioned lid the schematic diagram of the lock pawl of close handles.

The formula that the is staggered inclined-plane that Fig. 7 is a closed-system by close handles is connected to edge and claw or becomes schematic diagram on the whole fixed lower plate with the radial type lid.

Fig. 8 is attached to the lateral elevational view that does not comprise on the edge that also therefore is connected to manhole on the close handles under the above-mentioned edge situation.

Fig. 9 is that closing device is connected to the front elevation view on the edge.

Figure 10 is the plan view of closing device shown in Figure 9.

The preferred embodiment explanation

With reference to the label that is adopted in each accompanying drawing, how we generally to represent with label 1 by safety device proposed by the invention as can be seen, and formed by the edge 2 in the mouth that is arranged on vertical component 3, is used to enter horizontal underground pipeline 4.Radial type covers to be represented with label 5, and is helped by a pneumatic spring 6, as can clearlyer seeing among Fig. 3.

Entering underground pipeline 4 is undertaken by foldable ladder 7.

In Fig. 5 a and 5b, schematically illustrate the open and close position of release mechanism, we can see, lid 5 comprises guard plate 8, the peripheral screw of described guard plate 8, one of them screw in compression is on electric contact 9, and when handling above-mentioned screw and contact with electric contact 9 formation, electric contact 9 just is sent to control centre to alarm signal.Above-mentioned signal can transmit by cable circuit or by the switching system that is used for signals such as GPS, radio.

In case shed guard plate 8, the lock 10 of lid 5 just becomes free and can be approaching.This lock 10 has a pit 11, described pit 11 can only be with key-operated specially, so that make the perfect cooperation of pit 11 rotating opening instruments and pit 11 retaining mechanism be rotated by the short column 12 that is assemblied in the shell 13, the upper plate 14 usefulness oblique angle modes that limit close handles move.Fig. 5 a illustrates open position, and Fig. 5 b illustrates make position, and make position realizes by rotation 1/4th circles.

(Fig. 5 a) is clipped in lock pawl and keeps for 15 li owing to close handles 14 becomes open position, and above-mentioned lock pawl 15 helps around axle 16 swings and by spring 17.In this open position, lid 5 can rise by means of pneumatic cylinder 6.

Fig. 5 b illustrates the position of close handles 8 when on the lateral section that is positioned at lower plate 18, and above-mentioned lower plate 18 becomes integral body with the lower surface of lid 5.In this make position, pressure also is applied to advance and stops on the electric contact 19, described advancing stops the make position of electric contact 19 control lids, and when having arrived its position of rotation terminal, upper plate or close handles 14 transmit corresponding closure signal, become simultaneously and be superimposed upon fully on the lower plate 18, lid 5 remains in towards the position of the complete hermetic seal of access hole of underground pipeline.Superimposed plates 14 and 18 operation are got respective surfaces that inclined-plane 20 forms and are become convenient owing to having certain, and above-mentioned inclined-plane 20 helps the preliminary closure position, as following we can further see.Fig. 7 schematically illustrates the arrangement on these inclined-planes 20.

From the outside, can implement pre-sealing and complete hermetic seal.In order to set about covering 5 pre-sealing, bring pressure to bear on the downstream direction cover on 5 just enough, and when short column 12 is inserted in the shell 13 of upper plate 14, described upper plate 14 rotates shown in Fig. 5 a and the claw by lock pawl 15 fixedly the time, adjustable height also taking place and becomes whole screw 21 with the lower surface of above-mentioned lid 5 contacts with the widened section 22 of lid 5, make it rotate and head on spring 17 simultaneously around axle 16, because spring 17 effects, upper plate 14 is loosened and by means of spring 23 towards rotating according to the clockwise direction shown in Fig. 5 a, above-mentioned spring 23 pullings are wound on the circular cylindrical perimeter of vertical axis 25 with 24, and above-mentioned upper plate 14 is mounted to relative with vertical axis 25 diametrically.Therefore, the rise of lid 5 is superimposed upon owing to plate 14 and 18 to become in the groove part with inclined-plane 20 shapes and is stopped.

In case lid successfully is fixed on the preliminary closure position, it works to open key with special use exactly, by the above-mentioned key of opening is inserted in the pit 11 and finishes sealing, until the stack fully that reaches two plates 14 and 18, when above-mentioned stack, also moment pressure is applied on the electric contact 19, and receives closure signal in control centre.In case sealing then is placed on correct position to guard plate 8 fully.

When manhole is opened, in other words, in case when lid 5 rises and operating personnel enter access hole, then he can by become in lower surface with lid 5 pulling on the whole handle 26 (see Fig. 4 a) and towards downstream direction pulling handle implement to cover 5 preliminary closure until triggering pre-sealing.

Be in the preliminary closure state in case cover 5, operating personnel just to vertical axis 25 become whole two radially one of them of handle 27 work, apply one simultaneously and move to the weak point on the upper plate 14 and slight angle is moved, finish under above-mentioned safety condition and seal.

When operating personnel must come out by near the other import and export him, anti-terrorism opening internally is by accomplishing from any deep operations handle 27, because axle 12 long enoughs, make handle 27 head on spring 23 simultaneously and rotate towards the counter-clockwise direction shown in Fig. 5 b, until upper plate 14 or close handles become by lock pawl 15 fixing till.

Can see that in Fig. 4 a closed-system is connected to the assembly on the edge 2.All elements of Fig. 9-11 all are to illustrate with bigger ratio according to actual configuration, and are equal to those elements that schematically illustrate among Fig. 5 a and the 5b on function.

We can see with label 28 being used for of representing closing means is fixed to supporting member on the edge 2 in Fig. 9, described supporting member 28 comprises that some cast the opening 29 as the trip bolt passage, thereby can be installed in desirable height place, be arranged in edge 2 alternating expression pedestal liners 30 (see the pressure on Fig. 4 a), radial type lid 5 is located on the above-mentioned liner 30 so that regulate 14 pairs of lower plate 18 applied pressures of upper plate and be applied to.

In Fig. 9, what label 31 was represented is supporting member, helps the spring 17 of lock pawl 15 to rest on the above-mentioned supporting member 31.

Referring to Fig. 1 and 2, Fig. 1 and 2 illustrates ladder 7 again, and operating personnel must utilize described ladder 7 to obtain near the lower part of pipeline 4 and be used near outside, and ladder 7 has one to be fixed to the part on the wall of vertical pipe 3 and to have around the hinged folded part of axis.Therefore, ladder 7 will be folded into " L " shape, so that in order to put down ladder, operating personnel must apply downward pressure with pin, till when the movable part of ladder reaches the upright position, under the moment of described upright position, stop catch or similar item will be fastened to ladder on the standing part.When operating personnel wish by he enter same when mouthful leaving pipeline, in case he is on the standing part of ladder 7, he just must operate stop catch so that unclamp the movable part of ladder, ladder simultaneously one mass is set, so that can be easy to reach its horizontal level at the height place of hinge axes.Just in case pass through another mouthful near the pipeline outside in hope, operating personnel will find that ladder is in the folding position, and in order to launch ladder, operating personnel must draw ladder by hawser or freely bringing in of ladder of similar item pulling, ladder is descended, engage fastening retaining then so that ladder can use.

Claims (5)

1. safety manholes, has the lid that is hinged on the edge, described edge is fixed on the mouth of underground pipeline, assisted by rise, and a sealed engagement that is used for closing cap arranged, it is characterized in that, lid (5) comprises the interconnected opening of a band periphery, with the fastening plate of some screws (8) be located in described interconnected in, one of them screw is exerted pressure on the electric contact (9) that transmits alarm signal, in the below of plate (8) rotary part (10) is arranged, described rotary part (10) is equipped with a coaxial axle, and this axle ends at a short column (12), and described short column (12) is assembled in the shell (13) of close handles (14), above-mentioned close handles (14) is connected on the edge (2), and a rotation pulling motion is arranged, and can adopt its position that is positioned at another plate (18) top that becomes integral body with lid (5), the both has inclined-plane (20) and is used for convenient approaching, can take another position, angle to be used to unclamp, fixing by lock pawl (15) in the position, angle; Prepare another electric contact (19), described electric contact (19) is sent to the control centre of fixing this detent position with corresponding signal, have a mechanism that forces in detent position with a mechanism that in the flurried action of anti-terrorism, opens internally by the extension below the actual axis of rotation (25) of (14) from the underground pipeline to the close handles of handle (27) radially.

2. according to the described safety manholes of claim 1, it is characterized in that, from outside and for lid one sealing in advance is set internally, described pre-sealing comprises a screw (21), this screw (21) adjustable-height also is fixed on the lid (5), screw (21) contacts with lock pawl (15), lock pawl (15) remains closed handle (14) and is in rotary open position, make its decline simultaneously so that unclamp above-mentioned close handles (14), therefore, by means of back-moving spring (17), it can partly occupy make position, do not reach simultaneously the point that acts on the above-mentioned electric contact (19), lid (5) comprises a handle (26) that spurs internally.

3. according to the described safety manholes of claim 1, it is characterized in that, force the preliminary closure of close handles (14) or the mechanism of locked position to determine by a band (24), described band (24) be wound on the axle (25) the cylindrical section that broadens on be used to rotate above-mentioned handle (14), and its free end is fastened in pulling spring (23), described pulling spring (23) is fixed on the wall of edge (2).

4. according to the described safety manholes of claim 1, it is characterized in that, close handles (14) is connected on the edge (2) by supporting member (28), and above-mentioned supporting member (28) adjustable-height is so that be controlled at the fastening pressure of peripheral liner (30) loam cake (5).

5. according to the described safety manholes of claim 1, it is characterized in that, the vertical component of the underground pipeline that edge (2) is fixed thereon comprises maintenance ladder (7) and another end portion, above-mentioned maintenance comprises a standing part that leans on mutually with the wall of vertical pipe (3) with ladder (7), and the hinged top that is used to fold into horizontal pipe (4) of another end portion, the mass on being connected to movable part exists some to keep the mechanism of folding position.

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