JPS6129798Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a safety cover for a slide sheave device installed in a pile driver or the like.

FIG. 1 shows both sides of the entire pile driver having a slide device, including a pile driver main body 1, a leader pedestal 2, a leader 3 attached to the tip of the leader pedestal 2, and a leader 3 attached to the tip of the leader pedestal 2. A top sheave 4 provided at the upper end, a gantry 5 attached to the main body 1, a fixed sheave 6 attached to the tip of the gantry 5, a suspended lobe 7 installed on the leader pedestal 2, and a winding section 9 a slide sheave device 8 for guiding between the top sheave 4 and the top sheave 4, a leader column 10, and the rope 7.
It consists of a suspension device 11 (which is a drive device for an auger or a hammer, but the drive device for an auger 12 for drilling a hard hole is shown) attached to the tip of the auger.

Normally, as shown in Fig. 1, a rope 7 is hung directly on the top sheave 4 via a slide sheave device 8, but if the ground is sloping, pile driving is required as shown in Fig. 2. Since the machine body 1 itself is tilted, the sheave 8a of the slide sheave device 8 that guides the rope 7 can slide through the shaft 8d between both sides 8b and 8c. As a result, the rope 7 becomes twisted. In order to prevent this irregular winding, the rope 7 is hung on the top sheave 4 through a fixed sheave 6 attached to the tip of the gantry 5, as shown in FIG.

Generally, this type of slide sheave device 8 includes:
It is covered with a cover 13 to prevent danger.
The cover 13 has a fourth cover corresponding to a change in the rope angle.
As shown in the figure and FIG. 5, the bolts 14 were removed, the mounting position of the cover 13 was changed, and the bolts 14 were tightened and fixed again.

In the conventional device described above, all of the plurality of tightening bolts 14 are removed one by one, and the cover 13 is removed.
The work took time because the bolts 14 were inserted and tightened after shifting the position of the bolts. In addition, since the cover 13 is formed of a thin plate, loose rope 7 may be removed from the cover 1 during winding of the rope 7 or the like.
It had the disadvantage that it would come into contact with the end surface of No. 3 and be damaged.

The present invention has been made in view of the above-mentioned circumstances, and an object of the present invention is to provide a danger prevention cover for a slide sheave device that allows the safety cover to be easily attached and changed.

In order to achieve this objective, the present invention has a support shaft attached to both side walls that support the shaft of the slide sheave, a cover body that can rotate around the support shaft, and the other end of the cover body is It is characterized in that it is mounted so that its position can be changed between a mounting position and an inverted position via a stop means.

Hereinafter, one embodiment of the present invention will be explained in more detail with reference to FIGS. 6 to 9. Reference numeral 15 denotes a slide sheave device, in which a sheave 15a is slidably mounted on a shaft 15d, and the shaft 15d has an appropriate sliding width and is attached to both side walls 15b and 15c fixed to the upper surface of the leader pedestal 2. installed on. 16 is a reinforcing material welded to the side walls 15b and 15c, the upper part of which is bent. The reinforcing material 16 also serves as a fixed cover, covering a part of the upper part and side surfaces of the sheave 15a. Holes 17a, 17b, and 17c are holes that pass through both side walls 15b and 15c, respectively, and are bored near the outer periphery of the upper part of the slide sheave 15a.
A hole 17b is drilled at the front attachment position centering on a, and a hole 17c is bored at the rear inverted position. Reference numeral 18 denotes a cover body, which is attached to the hole 17a via a support shaft 19 so as to be rotatable back and forth, and the other end of the cover body 18 has holes at the positions of the holes 17b and 17c. A corresponding round hollow tube 20 is fixed. Position the round hollow tube 20 at the center of the hole 17b and insert the pin 21,
By tightening the tip with the nut 22, the cover body 18 can be attached to the attachment position shown in FIG. As shown in FIG. 7, the locking means formed by the pin 21, holes 17b, 17c, and nut 22 is in an inverted position symmetrical to the mounting position even when the cover body 18 is inverted about the support shaft 19. To,
The removed pin 21 can be inserted and attached. Further, the support shaft 19 may be made of the same component as the pin 21. Furthermore, although the nut 22 is used to prevent the pin 21 from coming off, a split pin or the like may also be used.

As shown in FIG. 6, on normal flat land, the rope 7 is
through the top sheave 4 vertically.
At this time, cover body 18 of the danger prevention cover
to the right in the figure and insert the pin 21 into the hole 17b.
and a round hollow tube 20, and lock the tip with a nut 22. In addition, if the ground is sloped and the pile driver body 1 itself is installed at a slope, remove the pin 21 on the right side in Fig. 6 and turn the cover body 18 around the support shaft 19. As shown in FIG. 7, a pin 21 is inserted into the hole 17c on the left side in the figure.
to lock the cover body 18. Then, the rope 7 is passed through the fixed sheave 6 and then hung on the top sheave 4.

By doing so, the upper part of the sheave 15a can be easily closed whether the rope 7 is hung vertically or at an angle. In addition, since the other end of the cover body 18 is formed into a curved shape, the rope 7 loosened during winding work etc.
Even if it comes into contact with the end of the cover body 18, it is unlikely to be damaged.

As described above, according to the present invention, the safety cover of the slide sheave device is configured to be reversible, so that changing its attachment can be made extremely easily.

[Brief explanation of the drawing]

Figure 1 is an overall side view of the pile driver, Figure 2 is a front view of the pile driver deployed on a slope, Figure 3 is a side view showing how the suspension rope is hung on a slope, and Figures 4 and 5. The figure is a side view showing a conventional device, Figures 6 and 7.
The figures are side views showing one embodiment of the present invention, FIG. 8 is a view taken along arrow A in FIG. 6, and FIG. 9 is a view taken along arrow B in FIG. 6. 2...Reader cradle, 4...Top sheave, 9...
... Winding section, 15 ... Slide sheave device, 15a
...Sheep, 15b, 15c...Side wall, 15d...
...Shaft, 17a, 17b, 17c... Hole, 18...
Cover body, 19... Support shaft, 20... Round hollow tube, 21... Pin, 22... Nut.

Claims (1)

[Scope of Claim for Utility Model Registration] 1. A safety cover for a slide sheave device that is installed on a leader pedestal and guides a suspension rope between a winding section and a top sheave at the upper end of the leader, which covers the top sheave of the slide sheave. A support shaft is attached to both side walls near the outer periphery of the upper part, a cover body is provided that can rotate around the support shaft, and the other end of the cover body is moved between the mounting position and the inverted position via a locking means. A danger prevention cover for a slide sheave device, which is installed so that its position can be changed. 2. The locking means is inserted into a round hollow tube, a hole penetrated through both side walls corresponding to the inverted position of the round hollow tube, and aligned with the hole and the position of the round hollow tube. A danger prevention cover for a slide sheave device according to claim 1, characterized in that the cover is comprised of a pin that is prevented from coming off.