JP2001131967A - Guide gib - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent loosening of a bolt or nut for installing a guide gib. SOLUTION: Brackets 8, 9 are respectively provided at an upper and a lower parts of a guide gib 3, and a locking rod 7 is detachably provided on both brackets 8, 9 to be applied to nuts 6 for installing the guide gib 3.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an engagement with a guide pipe for guiding a working device of a foundation work machine using a leader such as a pile driver along a guide pipe provided on the leader. The present invention relates to a guide give attached to a working device as a member.

[0002]

2. Description of the Related Art A working device such as a hammer and an auger has a guide gib mounted on a guide gib mounting frame fixedly welded to a back surface. The guide gib may be mounted by screwing a nut to a bolt provided on the guide gib mounting frame or by tapping the bolt on the guide gib mounting frame. Since loosening and removal of these bolts or nuts may lead to the drop of the guide gib, conventionally, use of double nuts, application of anti-loosening agents, use of U nuts, welding after tightening bolts or nuts, etc. Prevention measures were used.

[0003]

However, the use of a double nut, the application of a loosening preventive, and the use of a V-nut require the inspection work because there is a risk of loosening due to long-term use. In addition, when welding is performed, the guide gib is worn out and the welding must be removed at the time of replacement, which is troublesome.

Accordingly, an object of the present invention is to provide a guide gib which does not come off even if a bolt or a nut is loosened.

[0005]

SUMMARY OF THE INVENTION In order to achieve the above-mentioned object, the present invention provides a guide gib attached to a working device with bolts or nuts, in which brackets are provided at upper and lower portions of the guide gib, respectively.
The present invention is characterized in that a loosening prevention rod which comes into contact with a head or a nut of the bolt is detachably provided.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in more detail based on an embodiment shown in the drawings. FIGS. 1 to 7 show a first embodiment of the present invention, in which a guide gib 3 for guiding an auger rotation driving device 2 as a working device along a guide pipe 1 of a leader comprises an auger rotation driving device 2.
Four bolts 5 provided on the guide gib mounting frame 4 fixed to the back by welding are inserted into the mounting holes, and are attached to the guide gib mounting frame 4 by nuts 6 screwed to the bolts 5.

The guide gib 3 is provided with a loosening rod 7 having a rectangular cross section and abutting on a side surface of each nut 6 so as to be detachable. The anti-loosening rods 7 are provided on brackets 8 and 9 which are welded and fixed to the upper end surface and the lower end surface of the guide gib 3, respectively. The bracket 8 on the upper end surface is formed with a square hole 8a slightly larger than the cross section of the locking rod 7, and a notch 8b having a width smaller than the square hole 8a and opening from one side to the square hole 8a. . Also, the bracket 9 on the lower end face
A square hole slightly larger than the cross section of the locking rod 7 is formed.

The locking rod 7 has a retaining head 7a larger than the square hole 8a, and a thin shaft portion 7b which can be inserted into the cutout 8b is formed below the head 7a. When the thin shaft portion 7b is inserted into the notch portion 8b, the lower end of the slack stopper bar 7 is positioned above the bracket 9 on the lower end surface, and the narrow shaft portion 7b is formed by cutting the narrow width portion 7b into the notch portion 8b. The lower end is formed at a position where the lower end is inserted into the square hole of the bracket 9 on the lower end surface when the slack stopper bar 7 is lowered.

After the guide gib 3 is attached to the guide gib mounting frame 4 with the nut 6, the slack stopper bar 7 is inserted into the notch 8 b and lowered, and the lower end is inserted into the square hole of the bracket 9. Brackets 8, 9
Attached to. At the lower end of the locking rod 7 protruding downward from the bracket 9, a retaining pin 10 such as a split pin is provided. In addition, when removing the loosening prevention rod 7, the retaining 1
0 may be removed, the slack stopper bar 7 may be pulled up, and the thin shaft portion 7b may be removed from the notch portion 8b.

Therefore, the nut 6 is fixed by the locking rod 7.
Is restricted, so that the nut 6 can be prevented from loosening. In addition, when the guide give 3 is replaced, the loosening prevention rod 7 is easily provided.
Can be removed. Further, even if a plurality of guide gibs are adjacent to each other, the attachment / detachment of the slack stopper bar 7 is easy. Note that the locking rod 7 may be brought into contact with the front surface of the nut 6.

FIGS. 8 and 9 show a second embodiment of the present invention. The same elements as those in the first embodiment are designated by the same reference numerals. The guide give mounting frame 4 for mounting the guide give 3 is tapped, and the guide give 3 is fixed to the guide give mounting frame 4 by four bolts 5.
Attached to. The anti-loosening rod 7 is provided in contact with the front surface of the head of each bolt 5. Thereby, the same effects as those of the first embodiment, such as prevention of the bolt 5 from being loosened, can be obtained. In addition, the loosening prevention bar 7
You may make it contact the side surface of each bolt 5. Further, the cross section of the locking rod 7 is not limited to a square shape but may be a round shape or the like.

[0012]

As described above, according to the present invention, the brackets are provided on the upper and lower portions of the guide gib, and the locking stoppers which come into contact with the heads or nuts of the bolts for mounting the guide gib can be detachably mounted on both brackets. Since the rotation of the bolts or nuts is restricted, the loosening of the bolts or nuts can be prevented. is there.

[Brief description of the drawings]

FIG. 1 is an enlarged front view showing a guide give of a first embodiment.

FIG. 2 is also a front view

FIG. 3 is a perspective view of a locking rod.

FIG. 4 is a plan view showing a mounting order of the locking rod.

FIG. 5 is a plan view showing a mounting state of a locking bar.

FIG. 6 is a front view showing a mounting order of the locking rod.

FIG. 7 is a front view showing an attached state of the locking rod.

FIG. 8 is an enlarged front view showing a guide give of the second embodiment.

FIG. 9 is a plan view showing an attached state of the anti-loosening rod.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Guide pipe, 2 ... Working device, 3 ... Guide give, 5
... bolts, 6 ... nuts, 7 ... locking rods, 8, 9 ... brackets

Claims (1)

[Claims] 1. A guide gib attached to a working device with bolts or nuts, wherein brackets are provided at upper and lower portions of the guide gib, and a locking stopper that comes into contact with the head or nut of the bolt is detachably attached to both brackets. A guide give, which is provided in the guide give.