JPS5849251Y2 - End fittings of supporter for panel construction method - Google Patents

Description

[Detailed explanation of the invention] In the open well excavation method known as the panel construction method, in order to maintain the distance between the guide rails on both sides that guide the panel at a predetermined width, a supporter that is connected to the guide rails via a pin shaft is used. - is used.

FIG. 1 shows a pair of opposing guide rails 1.2, one supporter 3, and safety cables 4, 5.

The guide rails 1 and 2 are pushed down alternately as the excavation progresses, but in order to ensure accurate pushing down in a predetermined direction, the alternate pushing down is done at the maximum angle of inclination that occurs in the supporter 3. Value is limited.

In order to limit this, conventionally, stoppers for limiting the inclination angle are provided at each end of the supporter, but because the amount of digging is large and the resistance is small, the guide rails 1 and 2 are pushed in suddenly. , the inclination angle may not be restricted as expected by the stopper.

In such a case, not only the guide rail will sink in an unsatisfactory direction, but also the supporter 3 may be bent or the safety cable may be severed.

The present invention improves the structure of the end fitting of the supporter, as described below with reference to FIGS. 2 to 5, in order to avoid the above-mentioned disadvantages that occur with conventional supporters for panel construction.

In FIGS. 2 to 5, 10 is a guide rail, 11
is the end fitting of the supporter.

The end fitting 11 has an abutting portion 12 for the guide rail 10.
Container body parts 15, 1, which have bottoms 13 and 14 and are open on the outside, are formed at vertically symmetrical positions sandwiching the supporters (vertically symmetrical positions with respect to the center line of the supporter).

Rubber pieces 17 and 18 are inserted into these vessel bodies 15 and 16, and act as a kind of spring.

The shape of the rubber pieces 17, 18 is shown in FIG.

As shown in this figure, the rubber piece 17.18 has a front surface 19 that abuts against the guide rail 10, a back surface 20 that is seated on the bottom 13.14 of the vessel body 15.16, and an upper and lower surface 2.
1, 22 and surfaces 23.24 at both ends, and when fitted into the vessel body 15.16, the front portion is exposed to the outside of the vessel body 15.16 by a small amount.

The amount of exposure is made as small as possible as long as the supporter is tilted within a predetermined range with the effect described below.

Figure 3 shows the rubber piece 17 when the supporter is in the horizontal position.
．． 18, and FIG. 4 shows the state of the rubber pieces 17° and 18 when the supporter is tilted by the predetermined maximum angle.

The rubber pieces 17, 18 are constantly frictionally engaged with the guide rail 10, and in the state shown in FIG.
is strongly pressed against the guide rail 10.

In the process by which the lower rubber piece 18 reaches the state shown in FIG. 5, the pressing force between the rubber piece 18 and the guide rail 10 increases as the state shown in FIG. 5 is approached.

The state change from the state shown in FIG. 3 to the state shown in FIG. 5 occurs in the left end fitting when the horizontal supporter is rotated clockwise.

When the left end fitting part is in the state shown in FIG. 5, the upper rubber piece 17 in the right end fitting part becomes a particularly strongly pressed rubber piece.

When the supporter is rotated counterclockwise, the rubber piece 1
The state change in 7.18 is the opposite of the above case.

The frictional force acting between the rubber pieces 17 and 18 and the guide rail 10 and the moment of reaction exerted by the force acting on a pair of rubber pieces in a state similar to the rubber pieces 18 in FIG. 5 are caused to settle. A strong braking force is applied to the guide rail, especially at the end of the settling process, thereby preventing the safety cable from breaking or the support from bending.

The end fitting according to the present invention described above is
．． One of the rubber pieces 17.18 that fits inside the rubber piece 16 is in a confined state that generates a particularly large internal stress, the large coefficient of friction of the rubber piece 17.18, and the rubber piece 17.18 against the supporter. The above-mentioned effects are brought about in cooperation with the positional relationship, and this greatly contributes to the smooth alternate settling of the left and right guide rails in the panel construction method.

[Brief explanation of drawings]

Fig. 1 is a drawing for explaining the problems with the panel construction method supporter, Fig. 2 is a front view showing the end fitting according to the present invention,
3 is a sectional view of the main part of the device shown in FIG. 2, FIG. 4 is a perspective view showing the shape of the rubber piece used in the device shown in FIGS. 2 and 3, and FIG. Figure and “3rd
FIG. 3 is a sectional view showing the end fitting shown in the figure in a state where the supporter is tilted. 1.2...Guide rail, 3...Supporter-14°5...Safety cable, 10...
Guide rail, 11...End fitting of supporter, 12...Abutting portion, 13.14...Bottom of vessel body, 15.16... ...Vessel body, 17.18
...Rubber piece, 19...Front side of rubber piece,
20... Back side of rubber piece, 21, 22...
- Upper and lower surfaces of the rubber piece, 23.24... Surfaces at both ends of the rubber piece.

Claims (1)

[Scope of utility model registration request] A pair of body parts 15 are located above and below the center line of the supporter.
．． 16 are provided symmetrically, and rubber pieces 17, 18 having front surfaces 19 that abut against the guide rails 10 are fitted into the container body 15.16, and the container body 15.
16. An end fitting for a supporter for panel construction, characterized in that rubber pieces 17 and 18 are exposed outside.