JP2963878B2 - Manhole internal curing mounting device for automatic replacement of footwear - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a manhole for automatically replacing a footrest for curing the inside of the manhole when automatically replacing a footrest installed in an existing manhole. The present invention relates to an internal curing attachment device.

[0002]

2. Description of the Related Art In an existing manhole, a plurality of footrests are arranged in one or two rows in a vertical direction, and by using this, a worker moves up and down the manhole. I have.
However, when the manhole is used for a long period of time, the footwear may be corroded, and a danger may be sensed when the worker goes up and down. Therefore, an attempt has been made to automatically replace the footrest in the existing manhole (for example, see Japanese Patent Laid-Open No.
-35233, JP-A-8-158388, etc.).

According to the above-mentioned prior art, a gantry provided with a wire device is arranged on the upper surface side of a manhole, and a footrest is automatically replaced with a wire from the wire device. Work robots such as leg cutting, drilling, gluing or pouring of footrests are suspended to control and operate these robots on the ground. No special consideration has been given to curing. Conventionally, a worker directly enters the manhole and replaces the footrest with a curing base and a curing sheet on the upper wall of the invert.

[0004]

By the way, when a worker enters the manhole directly and replaces the curing base and the curing sheet on the upper wall surface of the invert before replacing the footrest, the aging is required. It is not easy to ascend and descend using a footrest with a converted manhole, and it may be dangerous due to the generation of corrosive gas in the manhole.

[0005] The present invention has been made in view of such problems of the prior art, and an object thereof is to provide a curing base for an upper wall of an invert in a manhole.
By providing the space and the curing sheet by the operation from outside the manhole, we provide a manhole internal curing attachment device for automatic replacement of footrests, which makes the work easy, easy and safe. What you want to do.

[0006]

In order to achieve the above object, the present invention provides a manhole inside curing attachment device for automatically replacing a footrest according to the present invention, comprising: a base disposed on a top surface of a manhole; A winch and a maintenance davit disposed on a base, a self-folding curing base suspended by a wire via the winch and the maintenance davit, and a curing with a seal tube on the periphery. A manhole inside curing attachment device for automatic replacement of a footrest comprising a sheet, wherein the curing base suspended and folded by the wire is folded in the manhole in the meandering manner.
Wire that binds the end of the center wire of the cured base
-Disconnect the connection between the center wire and the curing base,
The wires are connected with the connected wires
Expand the part and fold the middle part and both sides
Wing wire to display the shunting left and right wings
Opened and horizontal, the entire curing base is unfolded horizontally and installed on the upper wall of the inverter, and the curing sheet suspended by wire and folded is placed on the upper wall of the inverter. Compress the compressed air on the curing base
And the upper wall surface of the invert is covered with a curing sheet.

[0007]

1 to 4 relate to an embodiment of the present invention. FIG. 1 is a plan view of a manhole inside curing attachment device for automatic replacement of footrests, and FIG. 2 is FIG. No
A sectional view, FIG. 3 is a roll sectional view of FIG. 1, and FIG. 4 is a curing base.
FIG.

In FIG. 1, reference numeral 1 denotes a base arranged on the upper surface side of the manhole 2, reference numeral 3 denotes a guide rail mount provided on the base 1, and reference numeral 4 denotes the guide rail mount 3.
It is a maintenance davit provided in. The base 1 is provided with a hydraulic motor 5 and a winch 6 driven by the motor.

The wires 7a, 7b and 7c wound around the winch 6 are adapted to enter and exit the manhole 2 via pulleys 8 provided on the maintenance davit 4. Reference numeral 9 denotes a removable safety fence.

As shown in FIG. 4, a curing base 10 placed on an invert (to be described later) of the manhole 2 is provided before it is suspended by the wires 7a, 7b, 7c. The upper surfaces of the intermediate portions 11 and 12 are connected to the central wire 13 from the wire 7a, and the lower surfaces of the side portions 14 and 15 are connected to the wire as shown in FIGS.
The center part of the left and right wings 17, 18 folded into the side wire 16 from 7b or 7c is the wing wire.
19, respectively, are hooked, and wires 7a,
7b and 7c are connected to the winch 6 via the pulley 8,
Each of the winches 6 is independently controlled. The wing wire 19 is connected to the manhole 2.
Is derived outside.

[0011] Since the apparatus for mounting the inside of the manhole for automatic replacement of the footrest having the above-described structure is installed, first, the base is placed on the upper surface entrance hole 20 of the existing manhole 2. The base 1 is arranged in a centered state, and a hydraulic motor 5 and a winch 6 driven by the motor are mounted on the base 1 and a guide rail mount 3 provided on the base 1.
Wires 7a, 7b, 7c from the winch 6
The maintenance davit 4 passed through is mounted.

In this state, preparations for mounting the curing member in the manhole are completed. Therefore, first, the end of the center wire 13 of the curing base 10 folded in a zigzag pattern is bound to the wire 7a, and the side wires 16 and 1 are bound.
6 to 7b or 7c respectively, and wing wire
The end of 19 is set outside the manhole, then the hydraulic motor 5 is driven to lift the curing base 10 by the winch 6, and then the winch 6 is reversed to cure the curing base 1.
0 is suspended in the manhole (shown by phantom lines at the top in FIGS. 2 and 3 and shown by a in FIG. 4). In this state, the wires 7a, 7b, 7c are in tension.

Next, by slightly pulling the wires 7b and 7c and loosening the wire 7a, the connection between the central wire 13 and the curing base 10 is released (the central wire 13 and the curing base 10). A hook-shaped metal fitting is used for the connection, and when the central wire 13 is loosened, the connection by the metal fitting is released.) , 15 are horizontal, and the curing base 10 is in the state of B in FIG. 4 suspended by the wires 7b, 7c. Next, the left and right wings 17 and 18 are horizontally developed by slightly pulling and then loosening the wing wires 19 while leaving the wires 7b and 7c as they are (shown by virtual lines in the middle in FIGS. 2 and 3 and (State shown by C in FIG. 4).

The curing base 10 developed in a horizontal state is lowered in the manhole 2 by loosening the wires 7b and 7c. Then, one of the wires 7b and 7c is adjusted (for example, 7b is largely loosened), and the entire curing base 10 is inclined (shown by imaginary lines at the bottom in FIGS. 2 and 3 and shown by d in FIG. 4). State), the collision between the curing base 10 and the footrest 22 is avoided, and finally the invert 23
It is installed horizontally on the upper wall.

When the setting of the curing base 10 is completed as described above, the folded curing sheet 24 is hung by the wire 7a (a state shown by a virtual line in FIGS. 2 and 3). At this time, an air tube is connected to the peripheral seal tube 25 in advance. Cure with wire 7a
If the door 24 is placed on the curing base 10, the air
By sending compressed air to the seal tube 25 from the outside of the manhole 2 through the tube, the seal tube 25 expands around the curing sheet 24 and the curing sheet 24
Is placed on the curing base 10 and covers the upper wall of the inverter 23.

As described above, the curing base 10 and the curing sheet 24 are both folded in the folded state.
Since it is sent to the inside, it can be easily carried into the manhole 2 having a narrow entrance. The curing base 10 is spread horizontally in the manhole 2 and installed on the upper wall of the inverter 23, and the curing sheet 24 is installed on the upper wall of the inverter 23. Compressed air on the curing base 10
Since it can be unfolded by supplying it to the tube 25 and cover the upper wall of the inverter 23, the curing base
The seat 10 and the curing sheet 24 can be easily and easily installed in the manhole 2 by an operation from the outside of the manhole.

[0017]

According to the present invention, the curing members in the manhole for automatic replacement of the footrest are fed into the manhole in a folded state, so that the manhole with a narrow entrance is provided. The curing base is spread horizontally in the manhole and installed on the upper wall of the inverter, and the curing sheet is installed on the upper wall of the inverter. The curing base and the curing sheet can be expanded by supplying compressed air to the seal tube on the cured base to cover the upper wall of the invert. Manhole for automatic replacement of footrests that can be easily, easily and safely installed in the manhole by external operation
It is an internal curing attachment device.

[Brief description of the drawings]

FIG. 1 is a plan view of a manhole inside curing attachment device for automatically replacing a footrest according to an embodiment of the present invention.

FIG. 2 is a sectional view taken along the line II in FIG.

FIG. 3 is a cross-sectional view taken along a roll of FIG. 1;

FIG. 4 is an explanatory view of a developing order on a curing base.

[Explanation of symbols]

 1 Base 2 Manhole 4 Maintenance davit 6 Winch 7a, 7b, 7c Wire 10 Curing base 23 Invert 24 Curing sheet 25 Seal tube

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) E02D 29/12

Claims (1)

(57) [Claims] A base provided on an upper surface of the manhole;
A winch and a maintenance davit arranged on the base; and a curving base folded in a zigzag manner suspended by a wire through the winch and the maintenance davit.
A mounting device for internal replacement of a manhole for automatic replacement of a footrest comprising a base sheet and a curing sheet provided with a seal tube on the periphery, wherein the folded curing base is suspended by the wire. Folded inside the manhole
Wire that binds the end of the central wire of the cured base
Release the connection between the center wire and the curing base with
Part of the spelling of the ear with wires connected to each
Unfold the folded middle part and both sides horizontally.
Wing wire to display the shunting left and right wings
Opened and horizontal, the entire curing base is unfolded horizontally and installed on the upper wall of the inverter, and the curing sheet suspended by wire and folded is placed on the upper wall of the inverter. Compress the compressed air on the curing base
And a cover for covering the upper wall surface of the invert by a curing sheet.