JP2931282B1 - U-shaped groove lid attachment / detachment device - Google Patents

Abstract

A U-shaped groove that can be easily suspended regardless of a state of being placed, is stable in a suspended state, can be easily positioned at an installation position, and can be operated easily, safely, and quickly. It is intended to provide a lid attaching / detaching device. A lower surface support portion and an upper surface support portion on which a lower surface and an upper surface of a rectangular U-shaped groove lid are respectively supported.
Are formed with at least two rod-shaped members B spaced from each other in the lateral direction of the lid 2, and the lower surface supporting portion 10 and the upper surface supporting portion 20 are separated at one end by a distance slightly larger than the thickness of the lid 2. A connecting portion 30 to be opened and connected is formed, and the lower surface supporting portion 10 extends slightly shorter than the longitudinal length of the lid 2 in front of the connecting portion 30 and substantially half the extension length of the lower surface supporting portion 10. The upper surface support portion 20 extends to the length of
The U-shaped groove lid attaching / detaching device is characterized in that a central hanging portion 41 is formed on the upper surface supporting portion 20 so that the lid 2 is substantially horizontal when the is placed at a predetermined position.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a U-shaped groove lid attaching / detaching apparatus used for installing or removing a heavy lid of a large U-shaped groove made of buried concrete.

[0002]

2. Description of the Related Art FIG. 6 shows a conventional technique of this kind. According to this, the lid 2 of the large U-shaped groove 1 buried on the side of the road is manually attached or detached by a hanging device 3 of a sandwich type. Specifically, the size of the concrete U-shaped groove 1 is 400 mm long, 500 mm wide, and 100 mm thick U-shaped groove.
The cross section is 4000 mm in length, and a step 4 is provided on the open cross section side. The step 4 is also made of concrete and has a thickness of 100 mm, a width of 300 mm, and a length of 6 mm.
A lid 2 of 00 mm is placed.

[0003] The lid 2 has been manually operated even though it weighs about 65 kg. However, it was difficult, and it was difficult for even two people to pinch their hands or hurt their backs.

[0004] Therefore, there is a case where a suspending device 3 is used in which chains connected to the rear end of a ball such as the main ball of a yatco are collectively suspended. When it is suspended vertically as shown in the figure, the force for pinching the lid 2 acts strongly by the suspension force and cannot be easily removed. In this suspended state, the lid 2 is placed on the step 4 of the buried U-shaped groove 1 so close that the short side of the lid 2 comes in contact with the already installed lid 2, and is then fallen down to leave a gap between the lid 2 and the previous lid 2. It is installed so that it cannot be done. Between the lid 2 and the step 4, a resin string 5 for holding the rattle of the lid 2 and for preventing inflow of earth and sand is placed.

[0005]

However, in the above-described hanging device 3, it is good to hang a standing object, but it is difficult to hang a sleeping object, and the hanging posture is also rotated. Not stable or tilted. In addition, when the lid 2 is hung over the step 4 and lowered, the lid 2 is fallen down at a point separated from the front lid 2 by at least the thickness of the lid 2 and moved so as to be in contact with the front lid 2. Because
If the string 5 moves and it cannot fulfill its intended purpose,
It took a lot of effort and time to prevent this.

[0006] Therefore, according to the present invention, regardless of the state of being placed, hanging is easy, the hanging state is stable,
It is an object of the present invention to provide a U-shaped groove cover attaching / detaching device capable of easily adjusting a position to an installation position and enabling easy, safe and quick work.

[0007]

In order to achieve this object, an invention according to claim 1 is characterized in that a lower surface supporting portion and an upper surface supporting portion on which a lower surface and an upper surface of a rectangular U-shaped groove lid are respectively supported are respectively formed. The lid is formed by at least two rod-shaped members spaced apart in the lateral direction of the lid, and the lower surface support portion and the upper surface support portion are parallel to each other at one end thereof with a space slightly larger than the thickness of the lid. Butt that connects and abuts the lid
Forming a coupling portion that have a grip portion apart from the parts and the projecting-out support part, in front of the connecting portion, the lower surface support causes Zaisa longitudinal extension of the lower surface support portion slightly shorter than the length of said lid The upper surface support is extended to approximately half the extension length of the portion, and a central suspension portion is provided on the upper surface support so that the lid is substantially horizontal when the lid is placed at a predetermined position. A U-shaped groove lid attaching / detaching device characterized by being formed.

[0008]

[0009]

Further, the invention of claim 2, in claim 1, and a U-shaped groove lid attachment apparatus is characterized in that the formation of the rear suspension unit on the rear portion near the upper surface support portion.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described with reference to the drawings showing embodiments.

FIGS. 1 to 5 show an embodiment of the present invention.

FIGS. 1 to 3 show a perspective view, a front view, and a plan view of an example of a U-shaped groove lid attaching / detaching apparatus made by bending a solid or hollow rod-like member and welding it. .

That is, the lower surface support portion 10 and the upper surface support portion 20 on which the lower surface and the upper surface of the rectangular U-shaped groove lid 2 are respectively supported are at least two spaced apart in the short direction of the lid 2. It is formed of a rod-shaped member B. This space is maintained by the two crosspiece members 11 and 21, and rigidity is secured as a whole. The distal end portion 12 of the rod-shaped member B of the lower surface support portion 10 is formed so as to become thinner in the vertical direction toward the distal end, and in this example, is inclined downward. In addition, near the tip 12, a slip prevention means 1 is provided.
3 are formed. The anti-slip means 13 is for preventing the lid 2 from slipping off, and may have irregularities as in this example, or may have rubber baked.

The lower supporting portion 10 and the upper supporting portion 20 are provided at one end thereof, in this case, at the rear thereof, at a slightly larger interval than the thickness of the lid 2 in parallel with each other . They are connected by a connecting portion 30 to form a space.

The connecting portion 30 has a butting portion 31 with which the lid 2 abuts, and a holding portion 32 which is separated from the abutting portion 31 so that the entire device can be safely gripped without being caught by the lid 2. have. The lower surface support 10 extends forward of the butting portion 31 of the connecting portion 30 to a length slightly shorter than the length of the lid 2 in the longitudinal direction. Further, the upper surface support portion 20 has an appearance like a gabled roof in order to secure the overall rigidity, and extends forward of the lower surface support portion 10 ahead of the butting portion 31 of the connecting portion 30. About half of the length.

The center hanging portion 41 which is hung on the hanging hook 40 shown by a two-dot chain line in FIG. 1 varies depending on the structure of the apparatus. However, when the lid 2 is placed in a predetermined position, that is, in the lid storage space, the lid 2 is substantially horizontal. It is attached to the upper surface support portion 20 by welding or the like so that the front is slightly raised. The rear suspension portion 42 is attached to the rear of the upper surface support portion 20 by welding or the like.

From a manufacturing standpoint, it can be made by bending two large rod-shaped members B and attaching them by welding or the like. One bar-shaped member is extended horizontally, and FIG.
On the right side, that is, at the rear end, it is bent upward and forward toward the center, is extended forward at the center position, is slightly opened downward in the middle, and is extended toward the lower bar-shaped member, , And is extended until it hits a bar-shaped member B which is a grip portion 32 which is horizontally and upwardly extended in parallel with the upper and lower bar-shaped members B.

In this manner, another bar-shaped member B is also formed so as to be vertically symmetrical with respect to the horizontal center line in FIG. 3, and the bar members 11 of the lower support portion 10 and the cross members of the upper support portion 20 are aligned with the center line. It is made by welding 21 etc.

Next, the method of use will be described.

The U-shaped groove 1 is already buried, and the lid 2 is placed near or lying upright.

The hanging hook 40 is hung on the center hanging portion 41 of the apparatus, and the lid 2 that is lying down is hung by operating a crane or the like (not shown). The lid 2 is placed on a piece of square material or the like directed in the longitudinal direction thereof, which is placed two spaced apart from each other. The lower surface support portion 10 of this device is inserted between the square materials and pushed until it hits the abutment portion 31. Lifting horizontally and holding part 32
Of the U-shaped groove 1 and close to the front lid 2 as shown in FIG. At this time, the lid 2 is put down on the surface of the front lid 2 from the side so as not to touch the string 5 on the step 4, and the lid 2 is securely placed on the string 5.

Next, when the installed lid 2 is to be detached, the hanging hook 40 is moved to the center hanging portion 41 in the same manner as in FIG.
The lid 2 may be pushed into the lid 2 and pushed up until it hits the lid 2. However, when soil or the like is clogged between the U-shaped groove 1 and the lid 2, a considerable force is required. In some cases, the lower surface support portion 10 is bent. Therefore, as shown in FIG. 5, when the hanging hook 40 is hung on the rear hanging portion 42 and lifted, the lid 2 is lifted from one rear side, so that only a small force is required. In addition, when the lid 2 is stacked flat, the lower end of the lid 2 can be easily attached and pulled out, so that the lid 2 can be easily removed when the lid 2 is removed from the apparatus.

By means of the slip preventing means 13, the lid 2 can be stably carried and installed without moving, and the tip 12 is made thinner as it goes forward. It can be easily inserted into the cradle, and can be pulled out quietly even when it is put down on the ground or on the ground.

When the cover 2 is placed upright, the apparatus is set upright so that the front side of the apparatus is turned down, and the lower support 10 and the upper support 20 support the cover 2 on the cover 2. As shown. The apparatus shown in FIG. 1 can be suspended from the state where the apparatus is put on by setting the state of FIG.

[0026]

As described above, claim 1 and the contract
The invention according to claim 2 is a U-shape that can be easily suspended, stably suspended, can easily be positioned at the installation position, and can be easily, safely, and quickly performed, regardless of the state of being placed. A groove cover attaching / detaching device can be provided. Further details
In other words, it can be safely operated by grasping with both hands and separated from the hand and lid
Position, and if the lid slides and moves,
It is safe because the body is behind.

[0027]

[0028]

According to the second aspect of the present invention, an old lid that is tightly closed can be removed with a small force.

[Brief description of the drawings]

FIG. 1 is an overall perspective view of a U-shaped groove cover attaching / detaching device according to the present invention.

FIG. 2 is a front view of the U-shaped groove cover attaching / detaching device shown in FIG.

FIG. 3 is a plan view of the U-shaped groove cover attaching / detaching device shown in FIG. 1;

FIG. 4 is a perspective view showing a construction state using the U-shaped groove cover attaching / detaching device shown in FIG. 1;

FIG. 5 is a perspective view showing another construction state using the U-shaped groove cover attaching / detaching device shown in FIG. 1;

FIG. 6 is a perspective view showing a construction state using a conventional hanging hook.

Claims (2)

(57) [Claims] 1. A lower surface support portion and an upper surface support portion on which the lower surface and the upper surface of a rectangular U-shaped groove cover are respectively supported are formed by at least two rod-shaped members spaced apart in the lateral direction of the cover. The lower surface support portion and the upper surface support portion are connected in parallel at one end thereof at a distance slightly larger than the thickness of the lid, and an abutting portion abutting on the lid,
Forming a coupling portion that have a grip portion which is spaced apart from the abutment portion,
The lower surface support portion extends slightly shorter than the longitudinal length of the lid ahead of the connecting portion, and the upper surface support portion extends to approximately half the extension length of the lower surface support portion. A U-shaped groove lid attaching / detaching device, wherein a central hanging portion is formed on the upper surface supporting portion so that the lid is substantially horizontal when the lid is placed at a predetermined position. 2. The device according to claim 1, wherein a rear suspension portion is formed near a rear portion of the upper surface support portion.
Figure groove lid attaching and detaching device.