JP3118427B2 - Underground connection room opening locking device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a locking device for an opening of an underground cable connection room made of concrete, the upper surface of which is opened, and the opening is closed by arranging a plurality of lids in parallel.

[0002]

2. Description of the Related Art A concrete cable underground connection room is an intermediate portion for sending wiring from a manhole to a building.
The opening is closed with a plurality of iron lids and a locking device.

[0003]

These iron lids are constructed so as not to be easily opened and closed in order to prevent theft and destruction. Therefore, since the momentum iron lid is heavy and cannot be easily carried and is always locked, it takes time to move the iron lid and open and close the lock during wiring work.

[0004] It is an object of the present invention to provide a locking device for an opening in a cable underground connection chamber in which the iron lid of the opening in the cable underground connection chamber can be easily opened and closed and moved.

[0005]

According to the present invention, there is provided a locking device for an underground connection room opening, wherein a concrete cable underground has an upper surface opened, and a rectangular iron lid is arranged side by side in the opening and closed. A connection frame, and a receiving frame supporting an end of the lid at an opening peripheral edge of the underground connection chamber; and a floating wheel sliding on a receiving frame flat plate of the receiving frame are attached to both ends in parallel. 1
A plurality of lids are sequentially attached to the peripheral edge of the opening from the lid, and the lid is closed to the opening while being engaged with each other, and a lower portion of the first lid that locks the first lid. A first engaging member which is engaged with a key hole of the engaging member mounted on a plunger of a jack installed on a floor surface of the cable underground connection chamber; When the plunger of the jack is lowered, the arm that locks the locking piece of the first lid engages with the locking piece, and when the plunger is raised, the arm of the arm is locked. A lifting / lowering device that releases a lock and arranges a guide rod interlocking with the elevation of the plunger on both sides of the plunger, and guides the elevation of the lid with the guide rod ;
A lid hanger attached to the upper surface of the end of the second and subsequent lids, suspended in a laterally inclined manner, and sliding the floating wheel of each of the lids toward the elevating device; and the elevating device. Place the lids raised by
The first plunger is lifted, so that the first
To cancel the previous Symbol engaging piece for locking the arm of the lid
Features .

[0006]

According to the locking device for opening the underground connection chamber of the present invention, when the elevating device is operated, the engagement by the engagement piece of the arm is automatically released as the plunger of the jack is raised, and the opening is performed. Lock. Further, when the plunger of the jack is lowered, the arm automatically locks the engagement piece and locks the lid.

When the first lid is hooked and removed by continuously unlocking and locking the arm of the plunger of the lifting device and the keyhole of the locking piece of the first lid, the opening is opened. The part can be locked and unlocked.

In the second and subsequent lids, the lids are freely tilted with a lid hanging device, the floating wheels are grounded on a receiving frame flat plate, and the floating wheels are slid using the principle of leverage. Alternatively, it can be moved to the receiving frame flat portion.

[0010]

FIG. 1 shows an example in which five iron lids according to one embodiment of the present invention are continuously arranged. 1 is a schematic perspective view of a main part of the present invention, FIG. 2 is a cross-sectional explanatory view, FIG. 3 is a partially cutaway plan explanatory view, FIG. 4 is a vertical cross-sectional explanatory view, and FIG. 6 is an explanatory view of an arm of the lifting device,
FIG. 7 is an explanatory diagram of the lid hanging device, and FIG. 8 is an explanatory diagram showing the elevating state.

In these figures, an underground connection chamber 1 according to the present invention is a concrete structure having an upper surface opened and a rectangular iron lid 2 arranged side by side in the opening and closed. A cable lead-in hole 4 is provided.

At the periphery of the opening of the underground connection chamber 1, a receiving frame 5 on which the end 2a of the lid 2 is placed is attached to the periphery of the opening. The receiving frame 5 includes a receiving frame flat plate 5 a on which the end 2 a of the lid 2 can be placed, and a receiving frame edge 5 b that holds the end 2 a of the lid 2.

The lid 2 is formed in a bottom shape on both sides of the bottom surface.
It has ends 2a at both ends. Under the end 2a, a receiving frame 5 is provided.
Floating wheels 6, 6, 6, 6 that slide on the receiving frame flat plate 5 a are attached to both ends in parallel, and a plurality of second to fifth lids 22, 23, 24, 25 are sequentially arranged from the first lid 21. Each of the lids 2 is mounted on the portion 5 and has a projection 2 b formed on the side surface and a hole 2.
The opening is closed while being fitted to each other at c.

The lower side of both ends of the lid 2 is approximately 2
The floating wheels 6,6,6,6 are attached with an interval of ~ 3mm. Since the floating wheels 6, 6, 6, 6 are slightly floating from the bottom surface, the floating wheels 6, 6, 6, 6, 6 do not slide on the receiving frame flat plate 5a and the support frame 15, but when the wheels are inclined, the floating wheels 6, 6, 6, 6, 6 do not slide.
Slides on the receiving frame flat plate 5a and the supporting frame 15.

On the upper surface at both ends of the lid 2, mounting holes 2d for mounting the mounting rods 14b of the lid hanging member 14 are provided.
Are drilled.

Below the first lid 21 of the lid 2,
A locking piece 9 having a keyhole 8 for locking an arm 7 described later is formed. The lock is opened or closed by the arm 7 being locked to or unlocked from the locking piece 9 by the elevation of the elevating device 12.

The elevating device 12 is provided on the wall surface 3 of the underground connection room 1.
A plunger 10 having arms 7 mounted thereon, guide rods 13 disposed on both sides thereof, and a support frame 1 which is pressed by the plungers 10.
5 is comprised. The supporting frame 15 is a receiving frame plate 5 of the receiving frame portion 5.
It is the same plane as a.

An arm 7 is rotatably mounted on the upper part of the plunger 10 . The arm 7 forms a fork with a pin interposed therebetween, and a hook 7a is formed on one of the two forks. The fork pin rotates in conjunction with the plunger 10 of the jack by raising and lowering the plunger 10. When the plunger 10 descends, the hook 7a on one side of the fork of the arm 7 engages with the keyhole 8 of the locking piece 9 to lock. Also, plunger 1
When 0 goes up and down, the action pin 11 rises, the arm 7 rotates, and the locking of the key hole 8 of the locking piece 9 is automatically released.

When the plunger 10 is lowered, the arm 7 for locking the locking piece 9 of the first lid 21 engages with the locking piece 9, and when the plunger 10 is raised, the locking piece 9 of the arm 7 is moved.
Is released and guide rods 13 interlocking with the elevation of the plunger 10 are arranged on both sides, and the lid 2 is guided from both sides.
Up and down. The elevating device 12 is, for example, a box A having a built-in connection socket for supplying and discharging hydraulic oil of a hydraulic jack adjacent to an underground connection chamber (in this example, inner size 3000 mm × 900 mm) 1.
To be attached. A plug of a manual or electric hydraulic pump is connected to the socket B in the box A, and the lifting device 12 installed in the underground connection room 1 is operated by a jack operated by a hydraulic pump or the like to move up and down.

The first lid 21 of the basement 1 is
Arm 2 attached to the plunger 10 of FIG.
The cover 2 is completely locked because it is locked and hooked by the key hole 8 of the locking piece 9 of the first embodiment.

The lid suspender 14 has handles 1 at both ends of the support rod.
4a, and has a structure in which the mounting rods 14b, 14b of the lid 2 are disposed, and is mounted in the mounting hole 2d of the lid 2,
The cover 2 is suspended with its lateral direction inclined, and the floating wheels 6, 6, 6, 6 of the cover 2 are brought into contact with the receiving frame 5a and slid to move in the direction of the lifting device, or Can be returned to the position.

Each of the lids 2 raised by the lifting device 12 is moved to the outside of the opening by a moving vehicle 16, for example, a truck.

Next, the locking device for the opening of the underground connection chamber of the present invention.
How to use the device will be described. The upper surface is opened, and when opening and closing the concrete cable underground connection chamber 1 in which the opening is closed by arranging a plurality of iron lids 2 in parallel, the lid along the periphery of the opening of the underground connection chamber 1. A receiving frame portion 5 supporting the end portion 2a of the second mounting portion 2 is mounted, and an elevating device 12 in which the lids 2 fitted in parallel to the receiving frame portion 5 are disposed on the concrete wall surface 3 is operated, and first, a jack is provided. The plunger 10 is lifted to release the locking piece 9 for locking the arm 7 of the first lid 21. The guide rod 13 linked to the elevation of the plunger 10 is moved up and down to guide the plunger 10 and push up the lid 2 to move the lid 2 to a moving vehicle.
For example, it is placed on a cart and moved to the outside of the opening. Next, the lid hanging member 14 is attached to the second and subsequent lid bodies 22 to 25 and tilted, and the floating wheel 6 is slid on the receiving frame flat plate 5 a of the receiving frame portion 5 and moved toward the lifting device 12. The guide rod 13 of the elevating device 12 is raised to push the lid 2 upward, and the lid 2 is placed on a movable vehicle and moved to the outside of the opening to open the lid.

After the wiring work, the second and subsequent lids 22
25 are sequentially lowered from the moving vehicle 16 and placed on the support frame of the elevating device, the plunger 10 is lowered and placed on the receiving frame flat plate 5a of the receiving frame portion 5, the lid hanging device 14 is attached, and the opposite side is inclined. Then, the floating wheel 6 on the opposite side is slid to be sequentially loaded in the back of the opening, and finally the first lid 21 is lowered to the support frame 15, and the plunger 10 is lowered to remove the first lid 21. The hook 7 a of the arm 7 is locked to the locking piece 9 to lock the lid 2.

As described above, when the lifting device 12 is operated, the plunger 10 of the jack is raised, and
1 rises, the arm 7 fixed against the tensile force of the spring is moved by the rise of the hook action pin 11 and moves in the unlocking direction. Next, the upper part of the plunger 10 rises while the channel-like support frame 15 supporting the first lid is supported by the guide rod 13. The lifting device 12
The pump is stopped at a height that matches the height of the rail of a predetermined bogie prepared in advance . That is, when the lid 2 is raised to a required height, the lid 2 is moved on the carriage as shown in the figure.

The second and subsequent lids 22 to 25 are successively
And the lid and the lid 2 have a projection and a concave
The lids 2 do not come into engagement with each other.

When the door is closed, the hook 7a of the arm 7 automatically enters the keyhole 8 of the locking piece 9 by sequentially performing the steps opposite to the opening.

[0028]

According to the locking device for opening the underground connection chamber of the present invention, when the lifting device is operated, the arm is automatically released and unlocked as the plunger of the jack rises. Further, when the plunger of the jack is lowered, the arm automatically locks the engagement piece and locks the lid.

By unlocking and unlocking the first lid by continuously and integrally unlocking and locking the arm of the plunger of the elevating device and the key hole of the locking piece of the first lid, The opening can be locked.

The lid (including the second and subsequent lids)
Using the lid hanger, the lever can be tilted freely using the principle of leverage, and the floating wheel can be moved right and left on the floating receiving frame plate so as to be in contact with it. Likewise

[Brief description of the drawings]

FIG. 1 is a schematic perspective view of a main part of the present invention.

FIG. 2 is a cross-sectional explanatory view

FIG. 3 is an explanatory plan view partially cut away.

FIG. 4 is a longitudinal sectional view

FIG. 5 is a top view of the lifting device.

FIG. 6 is an explanatory view of an arm of a lifting device.

FIGS. 7A and 7B are explanatory diagrams of a lid hanging device and a cart, wherein FIG. 7A is a side view of a used state of the lid hanging device, and FIG. 7B is an explanatory diagram of a floating wheel of the lid hanging device.

FIG. 8 is an explanatory view showing a lifting state.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Underground connection room 2 ... Lid 2a ... Lid end 2b ... Protrusion 2c ... Hole 2d ... Mounting hole 5 ... Reception frame part 5a ... Reception frame flat plate 5b ... Reception Frame edge 6 Floating wheel 7 Arm 8 Keyhole 9 Locking piece 10 Plunger 11 Working pin 12 Lifting device 13 Guide rod 14 ... Mounting rods for lid suspenders 14a, 14b ... 15 ... Support frame 16 ... Dolly 21 ... First lid 22 ... Second lid 23 ... Third Lid 24: Fourth lid 25: Fifth lid

Continued on the front page (72) Inventor Teruyuki Kurihara 20-7 Nihonbashi Hakozakicho, Chuo-ku, Tokyo Inside Nakayama Shoten Co., Ltd. (72) Inventor Kenji Midorikawa 3-18-10 Moto-Asakusa, Taito-ku, Tokyo Airec Within Ken Co., Ltd. (72) Inventor Kenichi Honda 3-19-2 Nishi-Shinjuku, Shinjuku-ku, Tokyo Nippon Telegraph and Telephone Corporation (56) References JP-A-9-151473 (JP, A) JP-A-8 -326080 (JP, A) JP-A-9-329236 (JP, A) JP-A-8-53852 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) E02D 29/12- 29/14

Claims (1)

(57) [Claims] 1. A concrete cable underground connection chamber having an upper surface opened and a rectangular iron lid closed side-by-side to close the opening, wherein said underground connection chamber has an opening peripheral edge. A receiving frame supporting the end of the lid, and a floating wheel sliding on the receiving frame flat plate of the receiving frame are attached to both ends in parallel, and a plurality of lids are sequentially mounted on the periphery of the opening from the first lid. A lid closing the opening while being engaged with each other, a locking piece formed at a lower portion of the first lid for locking the first lid, and a floor of the cable underground connection chamber An arm that engages with a keyhole of the locking piece placed on a plunger of a jack installed on the surface and locks the first lid; and the first plunger of the jack descends when the plunger of the jack descends. The arm that locks the locking piece of the lid engages with the locking piece, and when the plunger rises, the arm is locked. A guide rod is provided on both sides of the plunger to release the plunger, and the guide rod guides the lifting of the lid with the guide rod . A lid hanging device attached to an upper surface of an end portion, suspended in a laterally inclined manner, and sliding a floating wheel of each of the lids to move in a direction of a lifting / lowering device; and each of the lids raised by the lifting / lowering device. Ri Do and a transport vehicle for moving to the outside by placing the plunger rises
Before SL engagement locking the arms of the first lid by
A locking device for opening an underground connection chamber, wherein the locking piece is released .