JPH10331178A - Cover lift-up tool - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cover lift-up tool which can simply open a cover through leverage, and which can be small-sized, and lightweight while the handling ability thereof can be enhanced, by positioning a base along an inner edge or the like of an opening, and by locking a hook attached to the other end of a coupling member to an opening handle or the like of the cover, and by rotating a handle attached to the base. SOLUTION: A base 18 is suspended down from the front edge of a planar body, and formed therein with a pawl 26, and the lower end part of a rivet for fixing an antislip rubber base to the lower surface of the body, serves as a positioning spike. Further, a grip 36 is attached to the upper end part of the upper rod 34 of the handle 22, the lower end part of a lower rod 32 is rotatably attached to a hinge 20 by means of a pin 38, and the upper end part thereof is attached thereto with one end of a wire 42 serving as a connecting member, by means of a connector 40. Further, the base 18 is positioned at the inner edge of an opening 14 or in the vicinity thereof, and a hook 56 attached to the other end of the wire 42 is locked to an opening handle or the like provided to a cover for an opening of a manhole. A part of the cover is lifted up by rotating a handle 22.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lifting device, and more particularly to a lid lifting device for lifting a lid for closing an opening of an internal structure such as a manhole.

[0002]

2. Description of the Related Art For example, when inspecting a meter of a water meter in a manhole or other equipment inside the manhole, it is necessary to open and close an iron cover attached to an opening of the manhole. Since it weighed about 30 kg, it was difficult to open and close the iron cover. Therefore, conventionally, various jigs have been proposed as means for easily opening and closing the iron lid, and examples thereof are disclosed in JP-A-9-60017 and JP-A-8-960. .

[0003]

Since all of the conventional jigs lift the entire lid and completely remove it from the opening, when the lid is large and heavy, a great load is imposed on the operator. In addition to this, there is a problem that the jig itself becomes large and heavy. On the other hand, in recent years, a small camera for inspection has been inserted into a manhole to display an image of internal equipment on a monitor at hand, and inspection and meter reading of the equipment have been performed. In such a case, The lid only needs to be lifted up by the gap where the small camera can be inserted, and it is not necessary to completely remove the lid.

[0004] Therefore, a main object of the present invention is to provide a lid lifting device which can be reduced in size and weight, and can be easily opened as required.

[0005]

SUMMARY OF THE INVENTION The present invention relates to a lid lifting device for lifting a lid for closing an opening of an internal structure having an opening, the base being positioned at an inner edge of the opening or in the vicinity thereof, and a hinge attached to the base. A handle rotatably attached by the handle, a connecting member of a predetermined length having one end attached to a part of the longitudinal direction of the handle, and a hook attached to the other end of the connecting member and locked to the lid, It is a lid lifting tool.

[0006]

The base is positioned at or near the inner edge of the opening, and the hook attached to the other end of the connecting member is engaged with an opening / closing handle provided on the lid. Then, the handle attached to the base is rotated to lift a part of the lid by the principle of leverage.

[0007]

According to the present invention, the lid can be easily opened by the principle of leverage. Also, since only a part of the lid is lifted, the required strength is smaller than in the prior art in which the entire lid is lifted, and therefore,
The size and weight can be reduced, and the handleability can be improved.

The above objects, other objects, features and advantages of the present invention will become more apparent from the following detailed description of embodiments with reference to the drawings.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A lid lifting device 10 of this embodiment shown in FIGS. 1 and 2 is for lifting a lid 16 for closing an opening 14 of a manhole 12 as an internal structure as shown in FIGS. 3 and 4, for example. And a base 18 and a base 18 positioned at or near the inner edge of the opening 14.
A handle 22 attached by a hinge 20 to the handle.

As shown in FIGS. 5 and 6, the base 18 has a plate-like main body 24 made of a metal such as stainless steel.
And two hooks 26 are formed depending on the front edge of the main body 24. A base rubber 28 for preventing slippage is fixed to the lower surface of the main body 24 by rivets 30, and the hinge 20 is fixed to the upper surface of the main body 24 by welding or the like. The lower end of the rivet 30 to which the base rubber 28 is fixed protrudes from the lower surface of the base rubber 28, and at the time of positioning, the protruding portion functions as a spike.

As shown in FIG. 1, the handle 22 includes a lower rod 32 and an upper rod 34 connected to the lower rod 32 so as to be adjustable in length. A grip 36 is attached to an upper end of the upper rod 34. The lower end of the lower rod 32 is rotatably attached to the hinge 20 via the pin 38. A wire 4 as a connecting member is provided on the upper end of the lower rod 32 by a connecting member 40.
Two ends are attached.

As shown in FIG. 7, the connecting member 40 includes a plate-shaped main body 44 arranged so as to embrace the lower rod 32, and the main body 44 is attached to the outer peripheral surface of the lower rod 32 by a plurality of screws 46. Can be Also, the main body 4
A bolt 48 is attached to 4, and one end of the wire 42 and the connection member 40 are connected by inserting the bolt 48 into a ring-shaped portion 50 provided at one end of the wire 42. The other end of the wire 42 has a ring-shaped portion 5
2 is provided, and a hook 56 is attached to the ring-shaped portion 52 via a retaining ring 54.

As shown in FIGS. 8 and 9, the hook 56 is made of a hard material such as a metal (such as stainless steel) or a hard plastic, and has a handle 58 for opening and closing (see FIGS.
4) includes a plate-shaped main body 60 having substantially the same width as that of FIG. 4). A locking portion 62 locked to the opening / closing handle 58 is formed at a lower portion of the main body 60, and a projection 64 is formed to protrude from a part of the locking portion 62. A retaining ring 54 is provided on the upper part of the main body 60 so as to be offset from the center of the main body 60 in the width direction.
The main body 60 has a central portion to which a stopper 70 is attached by a hinge 68. A spring 72 (FIG. 9) for urging the stopper 70 toward the locking portion 62 is attached to the hinge 68, and a lower part of the stopper 70 is for retracting the stopper 70 against the urging of the spring 72. A ring 74 is attached.

Using such a lid lifting tool 10, a lid 16 is provided.
10, the claw 26 (FIG. 5) is inserted into a gap between the lid frame 76 attached to the opening 14 and the lid 16 fitted to the lid frame 16 to position the base 18 as shown in FIG. Then, the hook 56 is hooked on the opening / closing handle 58 such that the hole 66 is located farther from the base 18. The opening / closing handle 58 is provided in the housing groove 78 of the lid 16.
, It is necessary to pull it out from the accommodation groove 78. In this case, the projection 64 formed on the hook 56
In FIGS. 8 and 9, the soil clogged in the search hole 80 (FIG. 3) of the accommodation groove 78 may be removed, and the protrusion 64 may be inserted into the search hole 80 to pull out the opening / closing handle 58.

Then, by turning the handle 22 in the direction of the arrow in FIG. 10, a part of the lid 16 is lifted by the principle of leverage. At this time, since the hole 66 of the hook 56 is positioned on the side far from the base 18, the lid 16 is always lifted on the side near the base 18 as the fulcrum. Note that, in order to easily lift the lid 16, when the hook 56 is hooked on the opening / closing handle 58, the lower rod 32 and the wire 42, the hook 56, and the opening / closing handle 58 form a wire so as to form an isosceles triangle. It is desirable to set the length and the like of 42.

After the lid 16 is lifted, as shown in FIG. 11, a support member 82 is inserted between the lid 16 and the inner edge of the opening 14 or in the vicinity thereof, and the lid 16 is supported by the support member 82. As shown in FIGS. 12 to 14, the support member 82 includes a rod-shaped main body 84 having a substantially U-shaped cross section, and a base 88 having a positioning claw 86 is attached to a lower end of the main body 84. On the lower surface of the base 88, a non-slip base rubber 90 is fixed. Also,
A cover receiving portion 92 for receiving the cover 16 is attached to a part of the main body 84 in the longitudinal direction, and a magnet 96 for fixing an operation rod 94 (FIG. 15) described later is mounted on the inner surface of the main body 84. It is attached. Further, a hole 100 for inserting a pin 98 attached to the operation rod 94 is formed in a part of the main body 84 in the longitudinal direction.

As shown in FIG. 15, the operating rod 94 includes a rod-shaped main body 102 having a predetermined length. A grip 104 is attached to an upper end of the main body 102, and a sponge or the like is mounted to a lower end of the main body 102. A plate-like mounting member 108 for mounting such a cleaning tool 106 is mounted. A pin 98 that fits into a hole 100 (FIG. 13) formed in the support member 82 is attached to a part of the main body 102 in the longitudinal direction.

The operating rod 94 has a pin 98 formed in the hole 1.
The main body 102 is attached to the support member 82 by attracting the main body 102 to the magnet 96, and is usually handled in a state of being integrated with the support member 82 as shown in FIGS. 16 and 17. Therefore, when the support member 82 is positioned at a predetermined position, the operation can be performed with the operation rod 94, so that the positioning can be easily performed.

After supporting the lid 16 with the support member 82, the operation rod 94 is removed from the support member 82, and, as shown in FIG. 11, for example, a cleaning tool 106 attached to the operation rod 94 removes dirt attached to the meter 107. I do. According to this embodiment, the lid 16 can be easily opened by the principle of leverage.
Also, since only a part of the lid 16 is lifted, the required strength is smaller than in the prior art in which the entire lid 16 is lifted, and therefore, the size and weight can be reduced.

In the above-described embodiment, the lid 16 is supported by the single support member 82, but the single support member 82 cannot stably support the circular lid. Therefore, when supporting a circular lid, for example, the support member 110 shown in FIGS.
0 and a support member 112 as shown in FIG. 21 may be used. Support member 1 shown in FIGS. 18 and 19
Reference numeral 10 denotes a structure in which two support members 82 (FIGS. 12 to 14) are connected by a connection plate 116 curved along the inner edge of the opening 114, and a support member 112 shown in FIGS.
Is obtained by connecting two support members 118 with two connecting members 120.
It is connected in a shape and can be folded when carrying or storing. According to the support members 110 and 112,
Even a circular lid can be stably supported at three points.

In the above-described embodiment, the case where the hook 56 as shown in FIGS. 8 and 9 is used on the assumption that the lid 16 provided with the opening and closing handle 58 having a substantially U shape is lifted. However, when lifting the lid 124 provided with the locking pin 122 as shown in FIGS. 22 and 23, for example, the hook-shaped hook 12 as shown in FIG.
6 may be used, and FIGS. 25 and 2
Lid 1 provided with a keyhole-shaped locking hole 128 as shown in FIG.
When lifting 30, for example, a hook 134 provided with a locking portion 132 as shown in FIGS. 27 to 29 may be used.

Further, the mounting portion 108 of the operating rod 94 includes
Instead of the cleaning tool 106, a small camera for inspection, lighting equipment, operation tool, or the like may be attached. When a small camera is attached, for example, as shown in FIG. 30, the image read by the small camera 136 can be viewed on the monitor 138 at hand, so that meter reading of the meter 107 and inspection of other internal equipment are extremely difficult. It will be easier.

Further, a chain, a metal rod, or the like may be used as the connecting member in addition to the wire 42.

[Brief description of the drawings]

FIG. 1 is an illustrative view showing one embodiment of the present invention;

FIG. 2 is a perspective view showing the embodiment of FIG. 1;

FIG. 3 is an illustrative view showing a lid to which the embodiment in FIG. 1 is applied;

FIG. 4 is an illustrative view showing a manhole to which the embodiment of FIG. 1 is applied;

FIG. 5 is a front view showing a base.

FIG. 6 is a plan view showing a base.

FIG. 7 is a plan view showing a connection member.

FIG. 8 is a front view showing a hook.

FIG. 9 is a side view showing a hook.

FIG. 10 is an illustrative view showing a use state of the embodiment in FIG. 1;

FIG. 11 is an illustrative view showing a use state of the embodiment in FIG. 1;

FIG. 12 is a front view showing a support member.

FIG. 13 is a side view showing a support member.

FIG. 14 is a plan view showing a support member.

FIG. 15 is a front view showing an operation rod.

FIG. 16 is a front view showing a state where an operation rod is mounted on a support member.

17 is a sectional view taken along the line XVII-XVII in FIG.

FIG. 18 is a plan view showing another supporting member.

FIG. 19 is a side view showing the support member of FIG. 18;

FIG. 20 is a side view showing another supporting member.

FIG. 21 is a side view showing a state where the support member of FIG. 20 is folded.

FIG. 22 is a plan view showing another lid.

FIG. 23 is a sectional view taken along the line XXIII-XXIII in FIG. 22;

FIG. 24 is an illustrative view showing another hook and a use state thereof;

FIG. 25 is a plan view showing another lid.

26 is a sectional view taken along the line XXVI-XXVI in FIG. 25.

FIG. 27 is a front view showing another hook.

FIG. 28 is a side view showing another hook.

FIG. 29 is an illustrative view showing a use state of another hook;

FIG. 30 is an illustrative view showing a use state of an operation stick to which a small camera is mounted;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 ... Lid lifting tool 12 ... Manhole 14 ... Opening 16 ... Lid 18 ... Base 22 ... Handle 42 ... Wire 56 ... Hook

Claims (3)

[Claims] 1. A lid lifting device for lifting a lid closing an opening of an internal structure having an opening, wherein the base is positioned at or near an inner edge of the opening, and the base is rotatable by a hinge. Lid lifting, comprising: a mounted handle; a connecting member of a predetermined length having one end attached to a part of a longitudinal direction of the handle; and a hook attached to the other end of the connecting member and locked to the lid. Utensils. 2. The lid lifting device according to claim 1, further comprising a support member interposed between the lifted lid and an inner edge of the opening or its vicinity to support the lid. 3. The lid according to claim 1, wherein the lid is fitted in a lid frame attached to the opening, and the base includes a claw inserted between the lid and the lid frame. Lifting equipment.