CN205954704U - Safe decompression well lid - Google Patents

Abstract

The utility model relates to a well lid specifically is safe decompression well lid. The problem of present well lid lacks safe pressure release structure is solved. This safe decompression well lid comprises walling crib and manhole cover, and it is articulated with the walling crib that manhole cover passes through the hinge, walling crib and manhole cover's contact surface is for following the last circular conical surface of convergent extremely down, the manhole cover back be equipped with with the pressure release latch mechanism of hinge on same manhole cover diameter, the pressure release latch mechanism including set up in the walling crib, with manhole cover's contact surface down along the latch hook chamber that radial evagination formed, and tapered end, the tapered end comprises upper end and manhole cover back articulated balancing weight and the latch hook that is fixed in the balancing weight side, when manhole cover covered in the walling crib, the latch hook lay in latch hook intracavity and latch hook and latch hook chamber top surface and keeps the clearance, manhole cover opens the last position that lies in the tapered end top has unlocking hole. This well lid is when the state is opened to the pressure release, and manhole cover does not leave the well room, and pedestrian and vehicle can normally be walked above that and travel, can not produce unsafe factor.

Description

Safety relief well lid

Technical field

This utility model is related to well lid, specially safety relief well lid.

Background technology

With the process of High-speed Urbanization, urban construction has carried out a large amount of pipeline provided underground, and well lid has become as Main foundation facility on urban road.Because dilatation speed ratio in city is very fast, urban pavement hardens on a large scale, this several years generation Boundary's climate warming, heavy rain frequency is existing, and municipal drainage facility relatively lags behind, and causes the water logging of many large- and-medium size cities to see that the situation in sea is sent out Raw, in this case, or existing well lid stuck it is impossible to realize the pressure release of flowing line, or huge in flowing line Backed down completely under big pressure effect or drifted about from well, produced many unsafe factors.

Content of the invention

This utility model solves the problems, such as that existing well lid lacks safety relief structure, provides a kind of safety relief well lid.

This utility model adopts the following technical scheme that realization：Safety relief well lid, is made up of walling crib and manhole cover plate, well It is hinged with walling crib that cover plate passes through hinge；The contact surface of walling crib and manhole cover plate is taper seat tapered from top to bottom；In well lid backboard Face be provided with hinge in same manhole cover plate pressure release latch mechanism diametrically, pressure release latch mechanism includes being arranged in walling crib and well lid The latch hook chamber that under the contact surface of plate, radially spirogyrate becomes（The direction pointing to the walling crib center of circle is interior）, and tapered end, tapered end is by upper end The balancing weight hinged with well lid back and the latch hook composition being fixed on balancing weight side, when manhole cover plate is placed in walling crib, latch hook Positioned at latch hook intracavity and latch hook keeps gap with latch hook chamber top surface；Position above tapered end is located on manhole cover plate and has open keyhole. During work, because the contact surface of walling crib and manhole cover plate is taper seat tapered from top to bottom, when in flowing line, pressure is excessive, Manhole cover plate jack-up can be played pressure release and act on manhole cover plate jack-up until latch hook contact with latch hook chamber top surface, again will not be by Manhole cover plate backs down completely, realizes safety relief, and the gap between latch hook and latch hook chamber top surface is manhole cover plate by the stroke of jack-up； When vehicles or pedestrians are through manhole cover plate, manhole cover plate can be pressed down reset, under pressure also can be again by jack-up, so instead Multiple；Balancing weight in tapered end remains plummet under gravity, thus ensureing that latch hook is always positioned at latch hook intracavity；Need people During work open manhole cover plate, with special opening rod from open keyhole insertion, promote tapered end to rotate along its jointed shaft, make latch hook depart from latch hook Chamber, realizes artificial unlatching.

Described hinge includes being arranged at hinged with the rectangle stretched radially interior under the contact surface of manhole cover plate in walling crib Frame, and the hinged handle that upper end is hinged with well lid back, the lower end of hinged handle is provided with dop, and hinged handle is provided with one end energy of dop After insertion hinged casing, rotated ninety degrees, dop snaps in hinged inframe, and the postmedian of hinged handle is provided with and the cooperation of hinged casing root Stop bit tooth.Jack-up can be translated using this hinge manhole cover plate, to increase pressure relief capability, be easily achieved manhole cover plate simultaneously and depart from Walling crib；During by jack-up, hinged handle rises along hinged casing until the stop bit tooth on hinged handle blocks hinged casing root, that is, After on manhole cover plate lid, the distance of stop bit tooth to hinged casing root is by the stroke of jack-up.When needing for manhole cover plate to depart from walling crib, by It is hinged in hinged handle and well lid back, manhole cover plate can be opened along this jointed shaft, hinged handle is made by mobile manhole cover plate Reach, the stop bit tooth on hinged handle gets out of the way hinged casing root, then manhole cover plate is rotated 90 degree, you can by hinged handle from hinged casing Interior dial-out, realizes manhole cover plate and departs from walling crib.

Faying face between the manhole cover plate of well lid described in the utility model and walling crib employs ramp structure, makes manhole cover plate Fitting between walling crib is tightr, and all directions stress is more uniform, can press tighter and tighter by manhole cover plate using driving, improve well Cover plate and the linking steady character of walling crib, reduce the impact noise producing during well lid uses.This well lid eliminates for damping Rubber strip, reduces well lid maintenance cost, extends service life.This well lid, by the automatic jack-up of hydraulic pressure, has decompression function, During pressure release opening, manhole cover plate does not leave well room, and pedestrian and vehicle normally can be walked thereon and be travelled, and will not produce Raw unsafe factor.After discharge pressure declines, manhole cover plate can automatically reply in situ, when manhole cover plate is opened if necessary, must Just must can open the safety it is ensured that in well lid use by special instrument.

Brief description

Fig. 1 is the top view of well lid described in the utility model；

Fig. 2 is the A-A sectional view of Fig. 1；

Fig. 3 is the B-B sectional view of Fig. 1；

Fig. 4 is manhole cover plate structure schematic diagram；

Fig. 5 is the C of Fig. 4 to partial view；

Fig. 6 is the rearview of Fig. 5；

Fig. 7 is the D of Fig. 4 to partial view；

Fig. 8 is the rearview of Fig. 7.

In figure：1- walling crib, 2- manhole cover plate, 3- latch hook chamber, 4- balancing weight, 5- latch hook, 6- open keyhole, 7- is hinged Frame, the hinged handle of 8-, 9- dop, 10- stop bit tooth, 11- hinged seat, 12- bolt.

Specific embodiment

Safety relief well lid, is made up of walling crib 1 and manhole cover plate 2, and it is hinged with walling crib 1 that manhole cover plate 2 passes through hinge；Walling crib 1 He The contact surface of manhole cover plate 2 is taper seat tapered from top to bottom；It is provided with hinge in same well lid board diameter at manhole cover plate 2 back side On pressure release latch mechanism, pressure release latch mechanism include being arranged in walling crib 1 with the contact surface of manhole cover plate radially spirogyrate become Latch hook chamber 3, and tapered end, tapered end is by the upper end balancing weight 4 hinged with manhole cover plate 2 back side and the latch hook 5 being fixed on balancing weight side Constitute, when manhole cover plate 2 is placed in walling crib, latch hook 5 is located in latch hook chamber 3 and latch hook keeps gap with latch hook chamber top surface；Manhole cover plate 2 The upper position being located above tapered end has open keyhole 6.Described hinge include being arranged in walling crib 1 and manhole cover plate contact surface Under the radially interior rectangle hinged casing 7 stretched, and the hinged handle 8 that upper end is hinged with well lid back, the lower end of hinged handle 8 is provided with Dop 9, hinged casing can be inserted in one end that hinged handle 8 is provided with dop 9, dop 9 is stuck in hinged inframe, hinged handle after rotated ninety degrees 8 postmedian is provided with the stop bit tooth 10 with the cooperation of hinged casing 7 root.When being embodied as, well lid back is provided with hinged seat 11, Jointed shaft chamber had on hinged seat 11, the upper end both sides of balancing weight 4 are provided with jointed shaft, the upper end both sides of hinged handle 8 also are provided with hinged Axle, the jointed shaft of balancing weight 4 and hinged handle 8 pushes the jointed shaft intracavity on respective hinged seat 11, and hinged seat 11 is provided with and is located at The bolt 12 of its hinged axocoel porch, jointed shaft is screwed on after pushing hinged axocoel bolt 12, completes balancing weight 4 and hinged handle 8 Hinged with respective hinged seat；Balancing weight 4 and hinged handle 8 are more reasonable with the above-mentioned articulated structure design of well lid back, use More reliable.

Claims (3)

1. a kind of safety relief well lid, by walling crib（1）And manhole cover plate（2）Constitute, manhole cover plate（2）By hinge and walling crib（1）Hinge Connect；It is characterized in that walling crib（1）And manhole cover plate（2）Contact surface be taper seat tapered from top to bottom；In manhole cover plate（2）The back side Be provided with hinge in same manhole cover plate pressure release latch mechanism diametrically, pressure release latch mechanism includes being arranged on walling crib（1）Go up and well lid The latch hook chamber that under the contact surface of plate, radially spirogyrate becomes（3）, and tapered end, tapered end is by upper end and manhole cover plate（2）The back side is hinged Balancing weight（4）With the latch hook being fixed on balancing weight side（5）Constitute, manhole cover plate（2）When being placed in walling crib, latch hook（5）It is located at lock Hook chamber（3）Interior and latch hook keeps gap with latch hook chamber top surface；Manhole cover plate（2）The upper position being located above tapered end has open keyhole （6）.

2. safety relief well lid according to claim 1 is it is characterised in that described hinge includes being arranged at walling crib（1） The radially interior rectangle hinged casing stretched under the upper and contact surface of manhole cover plate（7）, and hinged hinged with well lid back in upper end Handle（8）, hinged handle（8）Lower end be provided with dop（9）, hinged handle（8）It is provided with dop（9）One end can insert hinged casing, rotation Dop after 90 degree（9）It is stuck in hinged inframe, hinged handle（8）Postmedian be provided with and hinged casing（7）The stop bit tooth of root cooperation （10）.

3. safety relief well lid according to claim 2 is it is characterised in that well lid back is provided with hinged seat（11）, hinge Joint chair（11）On have jointed shaft chamber, balancing weight（4）Upper end both sides be provided with jointed shaft, hinged handle（8）Upper end both sides also be provided with Jointed shaft, balancing weight（4）With hinged handle（8）Jointed shaft push respective hinged seat（11）On jointed shaft intracavity, hinged seat （11）It is provided with the bolt positioned at its hinged axocoel porch（12）.