JPS5920438Y2 - Hinge swing prevention structure for underground structure lids - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a structure for preventing swinging of a hinge provided on a lid for an underground structure.

The underground structure covers mentioned here are large iron covers, mounting covers, manhole iron covers, and underground facility equipment that serve to open and close underground objects for water supply and sewage, etc., and openings that communicate between underground structural facilities and the above ground. , iron covers and mounting covers that play a protective role for wiring, etc. and an opening/closing role, as well as fire hydrant covers that serve as opening/closing doors to connect buried conduits under roads and their attached equipment to the ground;
Collectively refers to water control valve covers, gate valve covers, air valve covers, gas pipe covers, water meter covers, etc.

Conventionally, there are various types of hinge structures for lids for underground structures, and as shown in FIG. It is pivotally supported in a pivot path 54 provided on a parallel guide plate rib 53 on the back surface of the main body 51, and when opening the lid, the lid main body 52 can be freely reversed (in the vertical direction) or pivoted using the hinge hardware 52 as a rotation fulcrum. The structure is as follows.

However, such a lid hinge hardware 52 is simply connected to the pivot path 54.
In the mounting structure in which the hinge is pivoted internally, the hinge hardware 52 is not fixed externally in normal times, but its pivot 55
The hinge hardware 5 rotates within the pivot path 54 around the
2 swings.

When the lid main body 51 is pushed upward due to the turbulent uplift pressure from below due to the rapid rise of wastewater due to rapid water flow in the pipe during torrential rain or melting snow, the hinge metal fitting 52 also swings and floats up. The lid may become open and the lid may fly up.

In order to prevent this, the conventional hinge hardware 52 is also provided with a protrusion 58 as shown in the figure to prevent the lid from opening by engaging with the engagement protrusion 57 of the receiving frame 56. There are things that are.

However, even if the protrusion 58 is provided, the hinge metal fitting 52 causes a complicated rocking motion due to the turbulent pumped water from the lower part of the manhole as described above, so the protrusion 58 of the hinge metal fitting 52 becomes a part of the engagement part of the frame 56. There still remained the drawback that the lid body 51 would come out of engagement with the protrusion 57 and the lid would open.

The present invention was devised to solve the above problem, and its purpose is to completely prevent the hinge metal from swinging due to turbulent pumping water, etc., and at the same time, to provide an appropriate position opposite to the hinge metal. It is an object of the present invention to provide a structure for preventing swinging of a hinged metal part, which can completely prevent the lid body from jumping out of the receiving frame and opening the lid because of the locking device.

In the present invention, parallel guide plate ribs 3 for supporting hinge hardware are attached at required parallel intervals to the lower surface of one peripheral edge of the lid main body 2 supported by the receiving frame 1, and each support rib 3 has an inclined guide path 4a and a horizontal pivot path. 4
An L-shaped cutout groove 4 with an opening at the lower end is bored, and the head 5a of the hinge metal fitting 5 is inserted into the horizontal pivot path 4b of the cutout groove of the same shape.
A pivot pin 5' formed integrally with the metal hinge 5 is removably pivoted via the inclined guide path 4a, and furthermore, at least a part of the pivot pin 5' is attached to the bottom surface of the lid main body 2, and approximately to the top and side surfaces of the head 5a of the hinge metal part 5. An anti-swing device 6 is provided to bring the device into contact with the anti-swing device 6.
This invention relates to a structure for preventing hinge swinging of a lid for an underground structure, which is characterized in that pivoting swinging and horizontal swinging of the hinge hardware 5 is prevented by the following.

Hereinafter, a detailed explanation will be given based on the embodiments shown in the accompanying drawings.

First, Fig. 1 shows the main parts of the hinge hardware attachment part of the manhole cover. In the figure, 1 is the receiving frame, 2 is the lid body, 3 is the parallel guide plate rib for supporting the hinge hardware, and 4 is the hinge hardware support. The L-shaped notch grooves 4a and 4b are the inclined guide path and horizontal pivot path with the same type notch groove 4.

Further, reference numeral 5 denotes a metal hinge which is pivotally supported within the horizontal pivot path 4b, and has a pivot pin 5' formed integrally with its head 5a.

Furthermore, 6 is a rocking prevention device for the hinge hardware 5, which constitutes the gist of the present invention.

Regarding other components, reference numeral 7 indicates a lid receiving portion forming a steeply inclined contact surface of the receiving frame 1, and reference numeral 8 indicates a lid receiving portion 2 for smoothing the operation of attaching and detaching the pivot pin 5' along the inclined guide path 4a. 9 is a stillborn part into which the hinge metal fitting 5 provided inside the receiving frame 1 is loosely fitted, 10 is a stopper formed at the lower end of the hinge metal piece 5, and 11 is a protrusion provided on the hinge metal piece 5. Reference numerals 1 and 12 are retaining protrusions formed on the stillborn part 9 of the receiving frame 1 and protruding from the receiving frame 1, and the protrusion 11 of the hinge hardware 5 and the receiving frame side protrusion 12 engage to prevent the hinge hardware 5 from rising excessively. play a role.

Next, FIG. 2 and FIG. 3 show the swing prevention device 6 according to the present invention, and in the figure, 20 is an upper surface stopper for suppressing the pivoting swing of the hinge hardware 5, and one end extends toward the top of the hinge. A locking portion 21 that presses into contact with the upper surface of the head 5a of the hardware 5 during rocking.
4 are formed.

22 is the hinge gold! It is a side stopper for controlling the horizontal swinging of the IJ5, and has a protrusion 22' at one end that locks the side surface of the head 5a of the hinge 975 during swinging.

The above-mentioned top surface stopper 20 and side surface stopper 22 each have openings 20 a and 22 at required positions for insertion of fastening bolts.
A is opened, and the fastening bolts 23 are inserted through the openings 20a and 22a as shown in FIG. The two upper surface stoppers 22 are integrally attached to the lid body 2 by inserting them through the openings 24 and screwing the nuts 25 onto the fastening bolts 23 so as to sandwich the ribs 3.

The mounting position is such that the lower end surface of the locking part 21 of the upper surface stopper 20 and the upper end surface of the head part 5a of the hinge metal part 5 normally have a minute interval as shown in FIG. Side stopper 2 as shown? The protruding portion 22' is formed to have a minute distance from one side surface of the head 5a of the hinge hardware 5.

Describing the procedure and operation of attaching the rocking prevention device 6 of the hinge metal fitting 5 having the above structure to the lid body 2, first, the pivot pin 5' formed integrally with the hinge metal fitting 5 on its head 5a will be described. It is fitted into the first profiled cutout groove 4 via the inclined guide path 4a, and is brought to the other end of the horizontal pivot path 4b.

The terminal end of the horizontal pivot path 4b has an arcuate upper end surface as shown in FIG. It can be pivoted at any position.

Next, after aligning the openings 20 a and 22 a of the top surface stopper 20 and the side surface stopper 22 and inserting the fastening bolt 23 in the arrangement shown in FIGS. 2 and 3, Furthermore, the fastening bolt 23 is passed through the opening 24 of the parallel guide plate rib 3 on the back surface of the lid main body 2, and is screwed into the nut 25 on the opposite side of the parallel guide plate rib 3 as shown in FIG. The top stopper 20 and the side stopper 22 are integrally fixed to the lid body 2.

Therefore, the locking portion 21 of the top surface stopper 20 can press the top surface of the head 5a of the hinge hardware 5 and the side surface of the head 5a into substantially contact with each other during rocking, so that
It is possible to completely prevent the hinge hardware 5 from swinging.

As described above, the structure for preventing hinge swinging of a lid for an underground structure installed on a road or the like according to the present invention can have the following effects.

1. It completely prevents the hinge hardware from swinging due to the internal turbulent uplift pressure of manholes, etc., so the hinge hardware and the receiving frame will not become unlatched and the lid body will not open or suddenly fly out. There is no.

2. Since the hinge metal part can be kept in the notched groove at all times, the lid body can be easily and reliably turned over and rotated when the lid is opened.

[Brief explanation of drawings]

Fig. 1 is a side sectional view showing the main parts of the hinge fitting attachment part of the manhole cover, Fig. 2 is a front view of the anti-swing device 6, Fig. 3 is a plan view of the same, and Fig. 4 shows the hinge fitting 5 and the swinging part. FIG. 5 is a plan view showing a state in which the motion preventing device 6 is attached, and a side sectional view showing an attachment portion of a conventional hinge metal fitting. 1... Receiving frame, 2... Lid body, 3...
...Parallel guide plate rib for hinge hardware support, 4...
L-shaped notch groove, 4a... Inclined guideway, 4b...
...Horizontal pivot, 5...Hinge hardware, 5a...
...Head, 5'... Pivotal pin, 6...
- Anti-swing device.

Claims (1)

[Scope of utility model registration request] Parallel guide plate ribs 3 for supporting two hinge hardware are attached at a required parallel interval to the lower surface of one peripheral edge of the lid main body 2 supported by the receiving frame 1, and an inclined guide path 4a and a water slide are attached to each parallel guide plate rib 3 for support. An L-shaped cutout groove 4 consisting of a pivot path 4b' and an opening at the lower end is bored, and a hinge metal fitting 5 is inserted into the pivot path 4b of the same-shaped notch groove 4.
A pivot pin 5' formed integrally with the head 5a of the hinge member 5 is removably pivoted via the inclined guide path 4a, and at least a portion of the pivot pin 5' is attached to the upper surface of the head 5a of the hinge metal 5. A lid for an underground structure characterized in that a rocking prevention device 6 is provided in a substantially contacting state with the side surface of the lid, and the rocking prevention device 6 prevents the pivoting rocking and horizontal rocking of the hinge hardware 5. Structure to prevent hinge swinging.