JPH0726409B2 - Lid standing device for underground structures - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of use) The present invention relates to a device for erecting a lid of an underground structure when opened.

(Prior Art) The lid of an underground structure is a heavy object, and is accompanied by heavy labor such as lifting and shifting for opening, or reversing or turning in the case of a hinge type. In addition, since the opening is left open by opening the lid, there is a risk that people and things will fall into it.
Under such circumstances, a technique has recently been developed in which the lid body is rotated half a turn to stand or stand.

(Technical problem) The above-described standing device has a structure in which the support member is erected on the frame body to receive the lid body in the standing state, the standing state is unstable, and another worker sets the supporting member. There is a problem that it is difficult to open and close by one person because it is necessary. This type of underground structure also has a hinged lid,
Conventional standing devices have been implemented only on removable lids.

The object of the present invention is to solve the above-mentioned problems, and at the same time, a stable standing state can be obtained, and at the same time, opening and closing work can be performed by one person. To provide a lid standing device for an underground structure, which is suitable for a closed lid.

(Technical Means) The purpose is to provide an inwardly projecting mounting portion 4 of a support frame 3 for erecting the lid body on the inner peripheral edge of the frame body 2 that supports the lid body 1 at the peripheral edge portion, Fitting part 5 of the support frame in a substantially vertical direction
And the support frame is slidably engaged with the lid so as to become integral with the lid when the lower end is inserted into the fitting part and is pulled out when the lower end is pulled out. A fitting portion 5 having a vertical hole 8 into which the shaped lower end 13 of the support frame 3 is fitted is formed in the mounting portions 4 and 4, and a lateral groove 9 for accommodating the lower end of the support frame 3 when the lid is closed is provided with a support frame tip. Formed on the upper surface of the horizontal groove 9 and further expanding the end portion of the lateral groove 9, a horizontal first inclined surface 10, a vertical second inclined surface 11 opened above the lateral groove 9, and an upper edge of the vertical hole 8. The third inclined surface 12 constitutes the guide means 14 for fitting the lower end 13 of the support frame into the vertical hole 8 by its own weight, and further, the lid body can be turned or swiveled when the support frame is pulled out. This can be achieved by the structure in which the hinge mechanism 6 for connection is provided.

(Operation) Since the shaped lower end of the support frame 3 is completely removed from the vertical hole 8, the lid 1 can be inverted and opened without being restricted by the support frame 3 (see FIG. 7). Therefore, the important function of the hinged lid is not impaired at all.

Further, when the lid 1 is set upright, a guide means 14 composed of the first to third inclined surfaces 10 to 12 is provided around the vertical hole 8 and the lower end 13 of the support frame 3 is shaped. Therefore, it is possible to fit the support frame 3 into the vertical hole 8 by its own weight.

(Embodiment) Explaining below with reference to the drawings, the embodiment has a circular manhole iron lid, and a lid 1 has a frame 2 at a peripheral portion thereof.
It is supported by the inner peripheral edge of the. At the inner peripheral edge of the frame body 2,
Mounting portions 4 of the support frame 3 for erecting the lid body 1 are provided so as to protrude in parallel in a pair in the left and right directions. The illustrated mounting portion 4 is structurally rationalized because it is integrated with the lifting handle 7 at the tip.

Each of the supporting frame mounting portions 4 and 4 has a shaped lower end of the supporting frame 3.
A fitting portion 5 having a vertical hole 8 into which 13 is fitted is formed, and a lateral groove 9 for accommodating the lower end of the support frame 3 when the lid is closed is formed on the upper surface of the tip of the support frame. 10 is a horizontal first inclined surface in which the end of the lateral groove 9 is expanded, 11 is a vertical second inclined surface opened above the lateral groove 9, and 12 is a third inclined surface opened at the upper edge of the vertical hole 8. Then, these constitute guide means 14 for fitting the lower end 13 of the support frame 3 into the vertical hole 8 by its own weight.

The support frame 3 is composed of a pair of arms 15 and 15 arranged in parallel at an interval equal to the interval between the vertical holes 8 of the pair of mounting portions 4 and 4, and a beam 16 in which they are combined and integrated at the upper end. It has a front gate. The beam 16 also serves as a handle, and an interval 17 for inserting a hand is provided between the beam 16 and the back surface of the lid 1. 18
Is an engaging member for engaging the support frame 3 with the lid body 1, and is provided on the back surface of the lid body 1 at the same intervals as the pair of arms 15 and 15, and each arm 15 is slidably engaged. It has an engagement hole 19. Therefore, the lower end 13 of the support frame 3 can be completely pulled out from the fitting portion vertical hole 8 and can be pulled up until the lower stopper 20 provided in the middle is engaged with the engaging member 18. It is also determined by the engagement of the lower stopper 20 'with the engagement member 18.

The hinge mechanism 6 for connecting the lid body 1 to the frame body 2 is provided between the support frame mounting portions 4 and 4 described above, and is located at a position slightly higher than the mounting portion 4 projecting at the inner peripheral edge of the frame pair. Receiving 21
And the approximately L attached to the fitting port 22 that passes through it vertically
It is composed of a V-shaped hinge metal fitting 23, and the hinge metal fitting 23 is loosely fitted to the metal fitting receiver 21 from below. The metal fitting mounting part provided on the
Shows the mounting shaft that is pivotally supported.

The metal fitting receiver 21 which is the frame body side portion of the hinge mechanism 6 has an inclined base portion 27 whose outer side is higher than the inner side on the upper surface and supports the peripheral edge portion of the lid body 1 in the upright state. .
Reference numeral 28 denotes a circumferential groove into which the lower end of the peripheral edge portion of the lid fits, and 29 denotes a grip.

In order to erect the lid body 1 in the standing device configured as described above, the lid opening tool is inserted into the hand keyhole on the periphery of the lid body, the lid body 1 is lifted up, and the lever is used to move the hinge portion. The lid 1 is raised around the center.

When the lid body 1 stands up on the frame side member of the hinge mechanism 6 and the support frame 3 comes in a position to come on the vertical hole 8 of the mounting portion 4, the lower end 13 of each of the inclined surfaces 10 and 11 of the guide means 14 becomes. , 12 to be fitted in the vertical hole 8 and stopped when the upper stopper 20 'hits the engaging member 18, and the hinge member 23 of the hinge mechanism 6 is pressed to the outside of the fitting port 22. And stand up.

In the upright state, the lid body 1 is supported by the left and right arms of the support frame 3, stands on the base portion 27 of the hinge mechanism 6, and the hinge mechanism 6
The movement in the front-back direction is also regulated, so it is very stable and does not wobble even when you hold your hand. Therefore, when going in and out, it is possible to grasp the periphery of the lid body 1, put both feet on the left and right handholds 7, and get down while checking the position of the step in the manhole, which also contributes to the improvement of safety.

When the support frame 3 is further pulled up from the upright state and pulled out from the fitting portion 5, the lid 1 is no longer restricted by the support frame 3, and the hinge mechanism 6 is centered while the support frame 3 is held by the fitting member 18. You can move it freely. That is, the lid 1 can be inverted or swung around the hinge. Since the lid 1 is closed from the vertical state, it is easier than the work from the inverted state.

To close the lid 1, the beam 16 of the support frame 3 which also serves as a handle is lifted, the lower end is removed from the vertical hole 8, and the lid is tilted in the closing direction to fit into the opening of the frame 2. ,
With the lid 1 having a normal size, one person can easily open it, stand it up, and close it. Since the lid 1 is closed from the vertical state, it is easier than the work from the inverted state.

(Effect) Since the present invention is configured as described above, when the lid 1 is opened and raised, the support frame 3 fits in the fitting portion 5 in the standing state, and the lid 1
Since it can be erected, it can be seen at a glance that the lid is being opened, and in the erected state, the lid mechanism 1 is prevented from moving in the front-rear direction by the hinge mechanism 6 and is very stable. The upper part of the support frame 3 also functions as a ladder when entering and exiting. In particular, since the support frame 3 in the present invention is configured to be detached from the frame body 2, the opened lid body 1 can be inverted or swiveled around the hinge mechanism 6, and the features of the hinged opening / closing lid can be utilized, which is difficult to handle. The lower end 13 is easily guided to the vertical hole 8 by the guide means 14 when the lid 3 is lowered to the supporting frame 3 when the lid is erected, so that the supporting frame 3 automatically stands up and the operability is good. Play.

[Brief description of drawings]

The drawings show an embodiment of a lid standing device for an underground structure according to the present invention. Fig. 1 is a perspective view in a closed state, Fig. 2 is a perspective view in an opened state, and Fig. 3 is a main part. A front view, FIG. 4 is a front view of the vertical hole and its surroundings, and FIG. 5 and subsequent figures are sectional views, respectively. FIG. 5 shows a closed state, FIG. 6 shows a standing state, and FIG. 7 shows an inverted state.

Claims (3)

[Claims] 1. A mounting portion 4 of a support frame 3 for erecting the lid is provided in an inward projecting manner on an inner peripheral edge of a frame body 2 which supports the lid body 1 at its peripheral portion, and the mounting portion 4 is substantially up and down. Fitting part 5 of the support frame in the direction
And the support frame is slidably engaged with the lid so as to become integral with the lid when the lower end is inserted into the fitting part and is pulled out when the lower end is pulled out. A fitting portion 5 having a vertical hole 8 into which the shaped lower end 13 of the support frame 3 is fitted is formed in the mounting portions 4 and 4, and a lateral groove 9 for accommodating the lower end of the support frame 3 when the lid is closed is provided with a support frame tip. Formed on the upper surface of the horizontal groove 9 and further expanding the end of the lateral groove 9, the first horizontal inclined surface 10, the second vertical inclined surface 11 open above the lateral groove 9, and the upper edge of the vertical hole 8 The third inclined surface 12 constitutes the guide means 14 for fitting the lower end 13 of the support frame into the vertical hole 8 by its own weight, and further the lid body can be turned or swiveled when the support frame is pulled out. A lid standing device for an underground structure provided with a hinge mechanism 6 for connection. 2. The vertical fitting portion 5 has a vertical hole 8, and means 14 for guiding the lower end 13 of the support frame 3 to the vertical hole 8 is provided at each portion reaching the vertical hole 8. The lid standing device for an underground structure according to item 1. 3. The support frame 3 is slidably engaged with an engaging member 18 provided on the back surface of the lid 1, and the movable range of the supporting frame 3 is engaged with the engaging member 18. Stoppers 20 and 2
The lid standing apparatus for an underground structure according to claim 1, which has 0 '.