JPH072713Y2 - Frames for underground structures - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention changes the mounting state of the lid main body and the receiving frame for underground structures such as manholes upon factory shipment according to the road surface conditions at each site. The present invention relates to a receiving frame for an underground structure.

[Conventional technology]

A lid main body supported by a hinge or the like so as to be pivotable or reversible is installed in a receiving frame for an underground structure such as a manhole at the time of construction.

However, at each site, the road surface condition is different, and the steps for raising and lowering in the manhole are often provided on the side specified with respect to the flow direction. Moreover, since the hand grip provided on the receiving frame is also aligned with the step in the manhole, the opening direction of the lid main body installed on the receiving frame is also restricted by the positional relationship between the hand grip and the hinge.

Therefore, in Japanese Utility Model Laid-Open No. 62-172748, for the purpose of changing the opening / closing direction of the lid body with respect to the receiving frame, a pair of two engagements having an upper opening at the inner peripheral edge of the frame body for receiving the lid body. Frames are provided at two or more locations at regular intervals, a retaining ring for receiving the hinge metal fitting of the lid body is provided with a downward engaging piece that engages with the engaging frame, and further the engaging piece is provided on the engaging frame. A moving hinge mechanism for an underground structure in which a bolt for pressing is screwed to an engaging piece is described.

[Problems to be solved by the device]

However, in the moving hinge mechanism for an underground structure described in Japanese Utility Model Laid-Open No. 62-172748, the engaging frame of the retaining ring is formed on the engaging frame formed by opening the inner peripheral edge of the frame upward. Insert the bolt into the engaging frame, screw the bolt through the engaging frame into the engaging piece, and bring the tip of the bolt into contact with the inner peripheral surface of the frame to press the engaging piece against the engaging frame to secure it. Therefore, after installation on site, there is a risk that the bolt may loosen and the retaining ring may rattle or come off due to vibration of a passing vehicle or the like, which makes it difficult to open the lid body.

Therefore, the present invention prevents the bolts fixing the auxiliary metal fittings from loosening due to vibration of a passing vehicle or the like in an underground structure receiving frame in which the mounting state of the lid main body and the receiving frame can be changed. The purpose is to provide a receiving frame for underground structures that does not interfere with the lid.

[Means for Solving the Problems]

In order to achieve the object, an underground structure receiving frame of the present invention is an underground structure receiving frame provided with a main receiving metal fitting and a handholding rod, and a plurality of auxiliary receiving metal fitting mounting surfaces provided on the inner peripheral surface of the receiving frame. , Bolt insertion holes provided on both sides of the mounting surface and penetrating the receiving frame, hole portions corresponding to the bolt insertion holes, and projecting portions abutting the opposite sides of the bolt heads are formed at the edge portions of the hole portions. The auxiliary receiving metal fitting for the hinge and the bolt having the head fixed to the protruding portion and inserted into the hole and the bolt insertion hole are screwed from the outer peripheral surface of the receiving frame to press the auxiliary receiving metal fitting on the mounting surface. It is characterized by being equipped with a nut.

[Action]

In the receiving frame for the underground structure of the present invention, the bolt insertion hole formed in the inner peripheral surface of the receiving frame is made to correspond to the hole formed in the auxiliary receiving metal fitting, and the hole and the bolt insertion hole are formed from the inner peripheral side of the receiving frame. Insert the bolt, contact the opposite side of the head of the bolt with the protruding part formed on the auxiliary receiving metal fitting, and screw the nut to the leg of the bolt protruding to the outer peripheral side of the receiving frame to attach the auxiliary receiving metal fitting to the receiving frame. Fix it.

〔Example〕

Hereinafter, the features of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a plan view showing a receiving frame of this embodiment. The receiving frame 1 includes a main receiving metal fitting 2 for a hinge which is normally used.
Are provided so as to project from the inner peripheral surface of the receiving frame 1. Also,
The lock seat 3 is provided on the inner peripheral surface of the receiving frame 1 on the opposite side of the main receiving fitting 2.
Are formed. These main receiving bracket 2 and lock seat 3
Has the same structure as the conventional receiving frame. Note that reference numeral 4 in the figure indicates a handle rod.

In this embodiment, in addition to the main receiving metal fitting 2, a mounting surface 6 for mounting the auxiliary receiving metal fitting 5 is provided on the inner peripheral edge of the receiving frame 1. In the example of FIG. 1, the mounting surface 6 is provided at a position of 90 degrees to the left and right from the main receiving metal fitting 2, but may be provided at a position of 60 degrees or 120 degrees without being restricted by this. . Further, the mounting surfaces 6 may be provided on the inner peripheral edge of the receiving frame 1 at regular intervals or irregularly.

2 to 4 are views showing details of a portion to which the auxiliary receiving metal fitting 5 is attached. FIG. 2 shows AA of FIG.
FIG. 3 is a sectional view taken along the line BB in FIG. 1, and FIG.
It is CC sectional drawing of a figure.

The mounting surface 6 provided on the inner peripheral surface of the receiving frame 1 to which the auxiliary receiving metal fitting 5 is attached has a shape substantially corresponding to the outer surface of the auxiliary receiving metal fitting 5. For example, when the outer surface of the auxiliary receiving member 5 is flat or arcuate, a part of the inner peripheral edge of the receiving frame 1 is flattened or arcuate to form the mounting surface 6.

When the lid main body (not shown) is fitted into the receiving frame 1 by taper fitting, an inclined surface expanding upward is formed on the inner peripheral surface of the receiving frame 1. Therefore, it is preferable to form the protrusions 7a and 7b having different steps on the outer surface of the auxiliary receiving member 5 in order to cancel the inclination angle and keep the auxiliary receiving member 5 horizontal.

Bolt insertion holes 9a and 9b for inserting bolts 8a and 8b for fixing the auxiliary receiving metal fitting 5 are formed on both sides of the mounting surface 6. Further, hole portions 10, 10 are formed in the auxiliary receiving metal fitting 5 at positions corresponding to the bolt insertion holes 9a, 9b.
The illustrated bolts 8a and 8b have a hexagonal head 11, and a protrusion 12 that contacts two sides of the head 11 at symmetrical positions.
The a and 12b bulge inward from the auxiliary receiving member 5 in the vicinity of the holes 10 and 10. When the protrusions 12a and 12b come into contact with the head 11, rotation of the bolts 8a and 8b inserted into the bolt insertion holes 9a and 9b is suppressed.

Since the heads 11 of the bolts 8a, 8b are supported by the protrusions 12a, 12b, the bolts 8a, 8b cannot be rotated and the bolt insertion holes 9
It is inserted in a and 9b. Therefore, when the nuts 14a and 14b are screwed into the leg portions of the bolts 8a and 8b protruding to the outside of the receiving frame 1 and tightened, the auxiliary receiving metal fitting 5 is pressed and fixed to the mounting surface 6.

And with the auxiliary receiving metal fitting 5 attached to the predetermined inner peripheral surface,
When supporting the hinge fitting that connects the lid body and the receiving frame 1,
The lid opening direction of the lid main body can be freely set.

Further, when installing, since the asphalt is laid on the outer periphery of the receiving frame 1, the rotation of the nuts 14a and 14b is also suppressed, so that the auxiliary receiving metal fitting 5 can be reliably prevented from coming off.

As shown in FIG. 1, when the hinge metal fitting is received by the auxiliary metal fitting 5, the lid body mounted on the receiving frame 1 is opened to the right. Here, when it is desired to open the lid main body to the left according to the situation at the site, the auxiliary receiving metal fitting 5'may be attached to the mounting surface 6'when shipped from the factory.

As described above, by appropriately selecting the main receiving metal fitting 2 and the auxiliary receiving metal fittings 5 and 5'according to the road surface condition, it is possible to solve the above-mentioned problems regarding the opening direction and the like. At this time, a lock seat that can be attached and detached similarly to the auxiliary receiving metal 5 may be provided at a symmetrical position of the receiving frame 1 to which the auxiliary receiving metal 5 is attached.

In addition, in the above-described embodiment, the projecting portions that come into contact with the opposite sides of the head portion of the bolt are provided at two locations, but the projecting portions may be formed at four locations or at six locations.

[Effect of device]

As described above, according to the present invention, the bolt is inserted into the hole of the auxiliary receiving metal member having the protruding portion for preventing the bolt from rotating and the bolt insertion hole penetrating the receiving frame so that the bolt protrudes to the outside of the receiving frame. The nuts are screwed onto the leg portions of the bolts and tightened, so that the auxiliary receiving metal fittings can be easily attached to the attachment surfaces provided at appropriate places on the inner peripheral edge of the receiving frame. Therefore, auxiliary receiving metal fittings can be easily attached to required locations on the inner peripheral edge of the receiving frame according to the situation of each site, and can be shipped from the factory. Also, at the installation site, asphalt is laid on the outer circumference of the receiving frame, so the nuts screwed onto the protruding bolt legs are fixed on the outer peripheral side of the receiving frame, and the head of the bolt assists on the inner peripheral side of the receiving frame. Rotation is suppressed by the protruding portion formed on the metal fitting. Therefore, by securely preventing the bolts and nuts from loosening, it is possible to prevent the auxiliary receiving metal fittings from rattling or coming off, so that the lid opening operation can be easily performed.

[Brief description of drawings]

FIG. 1 is a plan view showing a receiving frame in an embodiment of the present invention, FIG. 2 is a view taken along the line AA of FIG. 1, FIG. 3 is a sectional view taken along the line BB of FIG. 1, and FIG. 1. It is CC sectional drawing of FIG. 1: Receiving frame, 2: Main receiving bracket, 3: Lock seat, 4: Handle rod 5,5 ': Auxiliary receiving bracket, 6,6': Mounting surface, 7a, 7b: Protrusion,
8a, 8b: Bolt 9a, 9b: Bolt insertion hole, 10: Hole part, 11: Head part, 12a, 12b: Projection part 14a, 14b: Nut

Claims (1)

[Scope of utility model registration request] 1. A receiving frame for an underground structure including a main receiving metal fitting and a handle bar, wherein a plurality of auxiliary receiving metal mounting surfaces are provided on an inner peripheral surface of the receiving frame, and the receiving frame is provided on both sides of the mounting surface. Bolt insertion hole, a hole corresponding to the bolt insertion hole, and an auxiliary receiving metal fitting for a hinge having a protrusion that abuts an opposite side of the bolt head at an edge of the hole, and the hole and the bolt. An underground structure characterized in that a bolt, which is inserted into the insertion hole and whose head is fixed to the projecting portion, is provided with a nut that is screwed from the outer peripheral surface of the receiving frame and presses the auxiliary receiving metal fitting against the mounting surface. Frame for goods.