JPS5847095Y2 - Connecting device for excavated trench earth retaining panels - Google Patents

Description

[Detailed description of the invention] Recently, as an earth guard for excavated trenches, guide rails are built at a predetermined interval on both sides of the excavated trench, and the vertical guide grooves provided in the guide rails are shaped. Many construction methods are used to achieve the purpose of earth retaining by inserting panels.

In addition, the panels used in such construction methods are usually formed in two parts, an upper panel and a lower panel, and when removing the panel after construction is completed, it is necessary to maintain the upper and lower panels in a connected state, and It is customary to pull these up and remove them all at once.

The present invention relates to a connecting device for upper panels for excavation ditch earth guarding used in the above-mentioned construction method. It is characterized by taking measures such as safety.

Hereinafter, the configuration of the present invention will be explained in detail with reference to the drawings.

In the figure, 1 is the upper panel, 2 is the lower panel,
Both are intended to achieve the purpose of retaining the earth by being inserted into a guide rail (not shown).

Reference numerals 1a and 2a are guide wheels mounted on both sides of the upper panel 1 and the lower panel 2 in a required number to ensure smooth insertion into the guide rail.

3.3 are recesses formed near the lower ends of both sides of the upper panel 1, and connecting fitting protrusion holes 4 are bored in the lower surfaces of the recesses so as to pass through the lower end surface of the upper panel 1.

Reference numeral 5 denotes a vertical rod-shaped connecting fitting which is inserted into the protruding hole 4 so as to be able to rise and fall and rotate freely, and an operating lever 5a is horizontally attached to the upper end of the connecting fitting. A collar-like body 5b for preventing the drawer from falling is provided below.

Reference numeral 5C denotes a locking piece that is connected to the lower end of the connecting fitting 5 via the large diameter portion 5b, and the locking piece 5C has a front and back width that is approximately the same as the diameter of the small diameter portion 5d, and a locking piece 5C that is connected to the lower end of the connecting fitting 5 through the large diameter portion 5b. The width of the surface is larger than the diameter (see FIGS. 6 and 7).

Reference numeral 6 denotes a stopper piece that stands upright on the side of the above-mentioned recesses 3, 3, and has locking slots 6a and 6b at its upper and lower ends for locking the operating lever 5a. It is provided.

That is, when the operating lever 5a of the connecting fitting 5 is hooked into the locking slot 6a located on the upper side, the connecting fitting 5 is kept in the raised state and the entire part is placed inside the upper panel 1. When the lever 5a is pulled into the locking slot 6b located on the lower side, the upper and lower panels 1 and 2 are pulled in via the connecting fitting 5 based on the action described later.
is stabilized in a connected state.

7 is a hole 4 for protruding a connecting fitting in the above-mentioned upper panel 1.
A locking hole is drilled near the upper surface side edge of the lower panel 2 so as to match the shape of the locking hole, and a locking hole is formed near the lower end of the lower panel 2 so as to match the planar shape of the locking piece 5C of the above-mentioned connecting fitting 5. A locking control hole portion 7a having a hole surface is formed.

That is, as shown in FIG. 4, when the connecting fitting 5 is lowered with the operating lever 5a of the connecting fitting 5 facing forward, the locking piece 5C of the connecting fitting 5 is Although it passes through the locking control hole 7a (see FIG. 6), by rotating the connecting fitting 5 by 90 degrees as shown in FIG. When the locking piece 5C is hooked on the locking groove 6b, the locking piece 5C is hooked on the lower surface of the locking control hole 7a (see FIG. 7), making it impossible to remove the connecting fitting 5, and It is configured such that the panel 1 and the lower panel 2 are connected.

In the end, the connection between the upper panel 1 and the lower panel 2 is achieved by using the locking control hole 7a, which has hole surfaces with different dimensions in the right angle direction, and by rotating the control hole 7a by 90 degrees. This is done by means of a locking piece 5C which is cut out so as to be kept in the locked state.

Although the present invention has the above-described configuration, the method of using the panel provided with the device of the present invention will be explained below.

When storing and transporting the panel, the connecting fitting 5 is kept in a raised state, and its operating lever 5a is latched into the upper locking groove 6a of the stopper piece 6. Therefore, the entire connecting fitting 5 is kept retracted into the upper panel 1 (see FIG. 2).

When using the panel, the connecting fittings 5 are kept in the retracted state as described above, and the panel is used for shoring work in the same manner as conventional panels.

Next, when removing the panel after the construction is completed, remove the operating lever 5a from the upper side locking groove 6a of the stopper piece 6, grasp the lever 5a, and tighten the connecting fitting 5 to the 9th position.
If the connecting fitting 5 is rotated by 0° and then lowered,
The connecting fitting 5 enters the locking hole 7 provided in the lower panel 2, and the locking piece 5C passes through the locking control hole 7a in the locking hole 7. (See Figure 4).

In this state, if the operating lever 5a is held and the connecting fitting 5 is rotated 90 degrees, the locking piece 5C is locked to the lower surface of the locking control hole 7a as shown in FIG. As a result, the connecting fitting 5 is prevented from being pulled out, and the upper panel 1 and the lower panel 2 are connected.

Furthermore, in this state, the operating lever 5a of the connecting fitting 5
As shown in FIG. 5, if the lower end of the stopper piece 6 is hooked into the lower end locking groove 6b, the connecting fitting 5 will be stabilized in the locked state.

After connecting both panels 1 and 2, if the upper panel 1 is pulled up using a crane or the like as in the conventional method, the lower panel 2 will also be pulled up together, making it impossible to remove both panels 1 and 2 at the same time. That's why.

Further, when the connection between both the panels 1 and 2 is to be released, the above-mentioned operation is reversed.

The present invention is structured so that the entire connecting fitting 5 is pulled into the upper panel 1 when the operating lever 5a is hooked to the upper side locking groove 6a of the stopper piece 6. When storing, transporting, and inserting the panel into the guide rail, by holding the connecting fitting 5 in a retracted state, the presence of the connecting fitting 5 not only does not get in the way, but also makes it possible to To eliminate problems such as loss of connecting metal fittings that occur when forcing the use of connecting metal fittings.

Furthermore, the present invention is configured such that when the operating lever 5a is hooked to the lower side locking groove 6b of the stopper piece 6, the connecting fitting 5 is locked to the lower panel 2. , both the upper and lower panels 1 and 2 due to unexpected rotation of the connecting fitting 5.
This not only prevents the danger of causing a serious accident due to disconnection of the panel, but also allows the user to determine whether the upper and lower panels 1 and 2 are locked or unlocked based on the direction of the operating lever 5a. It is very convenient because you can check it at a glance.

Furthermore, since the operating lever 5a has the mission of fixing the connecting fitting 5 in a fixed position as described above, and also operating the lifting/lowering and rotating operation of the connecting fitting 5, the upper and lower panels 1° The connection and disconnection work described in 2 can be performed without using any tools, which greatly contributes to the ease and speed of the work.

Further, in the present invention, recesses 3, 3 are formed near the lower ends of both sides of the upper panel 1, and connecting fittings 5 are provided in the recesses 3, 3.
Since the connecting fitting 5 does not protrude outward (in the side direction) of the panel and is exposed, it is easy to confirm the position and work as described above. It is now permissible to perform functions such as sex,
In addition, since the connecting fittings 5 are provided close to both sides of the panel, it is possible to operate the connecting fittings without the need for the work tool to enter the inside of the excavation groove. It also has the following effects.

[Brief explanation of the drawing]

The figures show one embodiment of the present invention, in which Figure 1 is a perspective view of upper and lower panels equipped with the device of the present invention, Figure 2 is a partially cutaway front view showing the main parts of the present invention, FIG. 3 is a side view of the stopper piece, FIG. 4 is a longitudinal sectional view showing the device of the present invention in a state immediately before connection, FIG. 5 is a longitudinal sectional view showing the same connected state, and FIG. 7 is a cross-sectional view taken along the line Y--Y in FIG. 5. FIG. 1... Upper panel, 2... Lower panel, la, 2a... Guide wheel, 3...
... Recess, 4 ... Hole for connecting fitting protrusion, 5 ...
...Connection fitting, 5a...Operation lever, 5b
・・・・・・Flame-shaped body for preventing falling, 5C・・・・・・
Locking piece, 5d...Small diameter portion, 6...Stopper piece, 6a...Upper side locking groove, 6
b...Lower side locking groove, 702900. Locking hole, 7a... Locking control hole portion.

Claims (1)

[Scope of utility model registration request] Recesses 3, 3 are formed near the lower ends of both sides of the upper panel 1,
A stopper piece having holes 4 for protruding connecting fittings formed in the lower surfaces of the recesses 3 and 3 so as to pass through the upper panel 1, and locking grooves 6a and 6b provided near both upper and lower ends. 6 are erected laterally within the recesses 3, 3, and a locking hole 7 for the above-mentioned protrusion (coinciding with L4) is provided at a predetermined location on the upper end surface of the lower panel 2.
A connecting metal fitting 5 having a shape that can be locked with the locking control hole 7a provided in the locking hole 7 by drilling it and rotating it by 90 degrees is attached to the protruding hole 7. It is inserted into the hole 4 so as to be able to move up and down and rotate freely, and a lever 5a for horizontal operation is attached to the upper end of the connecting metal fitting 5, and a flange-like body 5b for preventing falling is provided slightly below the lever 5a to prevent the operation. lever 5a
When the lever 5a is hooked into the upper side locking groove 6a of the stopper piece 6, the entire connecting fitting 5 is drawn into the upper panel 1, and the lever 5a is hooked into the lower side locking groove 6b. A connecting device for an upper panel for an excavated trench earth stop, characterized in that the connecting fitting 5 is configured to be in a locked state with respect to the lower panel 2 when the lower panel 2 is opened.