JPS5968434A - Locker for cover of manhole and the like - Google Patents

Abstract

PURPOSE:To easily attach a locker to the cover of a manhole by a method in which the coupling piece of the manhole cover is made slidable in the horizontal direction to a box, and the coupling piece is fixed with a padlock to the coupling bar of the bottom of the box for locking. CONSTITUTION:A coupling piece 2 is projected in the horizontal direction from the upside of a box 4, and a horizontal groove 5 to be fitted with a guide rail 8 provided in an upheaved manner on the inner face of both side walls of the box 4 is provided on both sides of leg pieces 9 formed in a forked form in a slidable manner in the horizontal direction inside the box 4. A projection 7 is also provided at the central part of the side of the coupling piece 2 in the box 4. A coupling bar 6 is projectionally provided at the central part of the bottom of the box 4, and a cover 3 to close the upside of the box 4 is also provided in a freely opening or closing manner. A locker 1 is attached to a receiving frame with bolts and nuts by matching the upside of the box 4 with the upside of the end portion of the manhole cover and pressing the cover with the coupling piece 2, and the coupling piece 2 is fixed with a padlock 10 for locking.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention mainly relates to a locking device that is attached to an existing manhole cover or the like.

Conventionally, manhole covers (manhole covers) have been simply fitted into frames and used without locking, and locking devices are especially provided for drinking water tanks and fuel storage tanks such as gasoline. General manhole covers (C locking devices or not installed) are installed on roads, etc., so they are required to have load-bearing strength and low price. Since it is mainly manufactured from cast iron, the lid is heavy, and due to foot traffic, etc.
This is because it could not be easily opened or closed by anyone other than the person in charge of the underground facility. However, in recent years, not only conventional water supply, sewage, city gas, and other facilities that play an important role in industrial activities, such as electric wiring and communication lines, have been buried underground, and the Although manholes for inspection are installed in various places, it has become necessary to attach a locking device to these lids (1), and many locking devices that can be attached to the lid and the receiving frame have been proposed and manufactured. However, as mentioned above, the lid and receiving frame are made of cast iron, and those that are attached to the back of the lid to protrude or have complicated grooves are easily damaged, and the opening and closing work must be done in between. However, in this case, the lock is a simple lock that is common to □-i, and there is a risk that it can be opened easily, and a lid with a lock requires an additional process. Therefore, there is a demand for a locking device that can be attached to conventionally manufactured unlocked manhole covers as needed, and at the same time, a locking device that can be attached to existing manhole covers is also desired. It's starting to happen.

The present invention has been made in response to the following demands.
The locking device according to the present invention uses a conventionally used padlock, and as shown in Figure 6, it is attached to a receiving frame into which a manhole cover fits, and when the locking piece is brought into close contact with the manhole cover, The locking piece is fixed and locked with a padlock, and the locking piece is released from the top of the lid by unlocking and removing the padlock, allowing the lid to be opened and closed. Sometimes it is configured to be stored in a locking device.

The following will explain the embodiments shown in the drawings.

] - The locking device 1 of the embodiment shown in Figures 1 to 4 has a box 4 in the form of a cube with an open top surface, and a locking piece 2 protrudes horizontally from the top surface of the box 4, and has locking pieces 2 on both sides of the box 4. A hoof-shaped leg piece 9 is provided with horizontal grooves 5 on both sides of the hoof-shaped leg piece 9, which fit into a kite rail 8 protruding from the inner surface of the wall, so that the leg piece 9 can be slidably mounted in the horizontal direction within the box body 4. Box 4 of locking piece 2
A protrusion 7 is provided in the center of the inner and fixed side in a shelf-like manner so that the lower surface of the protrusion 7 is flush with or slightly lower than the lower surface of the protrusion 7, and the locking rod 6 and the locking piece 2 The leg piece 9 and the protrusion 7 form a gap into which the inverted J-shaped lock lever of the padlock 1o can be inserted. In addition, attach the M3 that closes the top opening of the box 4 using a hinge or the like so that it can be opened and closed freely, and if necessary, attach the wing-shaped center in three directions from the bottom, looking at both sides and excluding the side where the locking piece 2 protrudes. A pedestal 11 having a bolt insertion hole is provided in a protruding manner.

The locking device of the embodiment shown in Fig. 5 is configured such that the locking piece 2 is rotated upward (((90° or more) or more and tightened by a rotating shaft attached between both side walls of the box. The periphery of the hole in which the locking piece 2 is inserted into the rotating shaft, that is, the boss 12, has the same function as the leg piece 9 in the above example.In this case, the protrusion 7 of the locking piece 2 pushes the locking piece 2 upward. When rotating, the padlock 10 should not come into contact with the locking rod 6.In addition, in this case, since the locking piece 2 is held horizontally when the padlock is locked, the locking rod of the padlock 10 should be close to the back side of the protrusion 7 of the locking piece 2. Therefore, it is preferable to provide a step on the locking rod 6 of the box body 2 at a distance equal to the diameter of the 100-padlock rod from the upper end, as shown in FIG.

The locking device of the present invention is constructed as described above, but the main parts such as the box are the same as a manhole cover. It is best to make it from cast iron, and when installing the manhole cover l (to install it, drill bolt holes in the receiving frame at two or more positions on the center line of the cover as shown in Figure 1) The upper surface of 4 is aligned with the upper surface of the receiving frame and the end of the lid, and the locking piece 2 holds the lid.
Attach to the receiving frame using bolts and nuts as shown in the figure.

In addition, when attaching to an existing manhole cover, it is sufficient to dig enough to embed the locking device at the attachment position on the upper surface of the receiving frame on the center line of the cover, and to fix anchor bolts etc. in the bolt attachment holes of the pedestal 11. Note that it may be attached to the receiving frame by welding or the like without using bolts or nuts.

Generally, manhole covers are made of cast iron and fit into a receiving frame, so it is only necessary to attach the locking device in at least two places so that the locking pieces 2 of the locking device hold both ends of the center line of the lid. The piece 2 is fixed as described above by inserting the locking rod of the padlock 10 into the gap on the back side of the protrusion 7 of the locking piece 2 and locking it.

In addition, the locking piece of the locking device may be rotated 900 degrees or more in the horizontal direction in addition to the rows shown in the drawings. Therefore, by making a protrusion or a recess on the boss on the periphery of the hole that fits into the rotation shaft of the locking piece, the locking piece will move when the padlock rod is inserted between the locking rod 6 and the boss. You can configure it as follows.

Further, since the protruding portion of the locking piece 2 is exposed by the thickness of the protruding portion from the manhole cover surface, it is preferable to round the periphery of the upper surface so that there are no corners as shown in the drawing.

The padlock is not specified in particular, but it is sufficient as long as it has an inverted J-shaped locking rod and the main body can be stored in the case.The padlock used for the locking device attached to a single manhole may differ depending on the purpose of use. You can choose to open and close with a key or the same key.

As mentioned above, the locking device of the present invention can be applied to various conventionally used circular or square manhole covers + and C that do not come with a locking device, and the installation can be delivered according to the customer's request. In addition to this, there is no need to specially manufacture manhole covers with locks, which were conventionally manufactured, and the number of products in stock can be reduced, and the product can be provided at low cost.

[Brief explanation of the drawing]

The drawings show embodiments of the present invention, Figure 1 is a top view, Figure 2 is a sectional view taken along line 8-A of figure 1, Figures 3 and 3 are sectional views taken along line BB of figure 1 of spear, Figure 1' 4 is a top view with only the locking piece broken and indicated by lines, excluding the lid in Figure 1; Figures 5 and 5 are longitudinal cross-sectional views showing other embodiments; It is a top view of the manhole showing the installation state of the locking device concerning the invention. 1... Locking device, 2... Locking piece, 3... Lid, 4. ...Box, 6...Latching rod, 7...Protrusion,
10... Padlock, Figure 1, Figure 8, Figure 2, Figure 3, Figure 4, Figure 5

Claims (1)

[Claims] The locking piece (2) that protrudes horizontally from the top surface of the box (4), which has an open top surface and is shaped like a cube, is horizontally (slided or rotated approximately 90 degrees with a guide rail, groove, rotating shaft, etc.). Attach the locking piece (2) to the box (4) with the
A protrusion (7) is provided in the center of the side located inside the box in a shelf-like manner, and a protrusion (7) of the locking piece (2) is provided in the center of the bottom surface of the box (4).
Attach a locking bar (6) whose height is the same as or slightly lower than the lower surface of the protrusion (7) to the padlock made of cloth plate (
The body of the padlock (2) is enclosed in a box (4) that protrudes so as to have a gap into which the inverted J-shaped lock lever of the padlock (2) can be inserted.
Attach the lid (3) that can be opened and closed to close the opening after storing it inside the case (2), and if necessary, push out the pedestal (phantom) having a bolt insertion hole in the wing-shaped center outward from the bottom of the case (2). A locking device for a manhole cover, etc.