JPH0231664Y2 - - Google Patents

Description

[Detailed Description of the Invention] (a) Field of Industrial Application This invention relates to a guide device for guiding, for example, a hose in a bottom-expanding earth drill, a cable in a climbing crane, etc. via guide rollers.

(b) Prior Art First, an example of a bottom-expanding earth drill will be explained with reference to FIGS. 6 and 7.

A winch 3 is installed on a revolving body 2 mounted on a traveling body 1, and a boom 4 and a front frame 5 are attached to the front part of the revolving body 2. A sheave 6 is attached to the upper end of the boom 4, and a Kelly bar drive device 7 equipped with a hydraulic motor is installed at the upper end of the front frame 5. winch 3
The wire rope 8 that has been wound around and let out is hung on the sheave 6 and connected to a swivel joint 9. The swivel joint 9 is connected to the Kelly bar 10, and the lower part of the Kelly bar 10 is connected to the wide bottom bucket 1 through the stabilizer 11.
It is connected to 2. The middle part of the Kelly bar 10 is connected to the Kelly bar driving device 7 so as to be vertically movable, and the rotational force of the Kelly bar driving device 7 is transmitted to the wide-bottomed bucket 12.

A center joint 13 that sends pressure oil from a stationary hydraulic source to a rotating actuator and a hose reel 14 that winds up a hose 15 are installed at the bottom of the Kellyva drive device 7. A hose guide device 16 is installed to prevent the hose 15 from spreading outward due to force and to guide the hose 15 in and out. The expanded bottom bucket 12 has an expanded wing 1 that is opened and closed by a hydraulic cylinder 18 to excavate the side surface of the excavation hole.
7, and as means for supplying pressure oil to the hydraulic cylinder 18, a center joint 13, a hose reel 14, a hose 15, and a hose guide device 16 are provided.
is provided.

By operating the Kelly bar drive device 7, the Kelly bar 10 and the expanded bottom bucket 12 are rotated,
The wide-bottom bucket cart 12 is pulled up and lowered by winding and letting out the wire rope 8 by the winch 3. For excavation, loosen the wire rope 8 while rotating the bottomed bucket 12,
This is done by applying the weight of the expanded bottom bucket 12 or the like. After excavating to the specified depth, expand the bottom bucket 12
Expand the expansion wings 17 to excavate the expanded bottom part.

Next, as a conventional technique, the applicant has previously filed Utility Application No. 163855 (1983)
This section describes the guide device for hoses, cables, etc.

Support frames 19A and 19B are attached to the Kelly bar 10, and both support frames are coupled to each other by bolts 20. Support frame bodies 19A, 19B
An axle 21 and a spring receiving collar 22 are mounted on the side of
axles 22 are mounted in parallel on the same horizontal plane, and guide rollers 23 having guide groove edge flange portions 23a, 23b with different diameters are mounted on each axle 21, 22, respectively. The large diameter edge flange 23a of one guide roller 23 faces the small diameter edge flange 23b of the other guide roller 23. Each axle 21, 2
A stopper 24 that prevents the guide roller 23 from coming off is fixed to the end face of the roller 2 by a bolt 25, and a compression spring 26 is installed between the spring receiving collar 22a and the guide roller 23 facing it. . A pair of opposing guide rollers 23, 23
A hose 15 is passed between the guide grooves.

Normally, one guide roller 23 is pushed by a compression spring 26 and faces the other guide roller 23, and the edge flange 2 of each guide roller 23, 23
3a and 23b form a guide portion for the hose 15. When removing the hose 15, the guide roller 23 is manually slid inward against the compression spring 26 as shown by the chain line. Thereby, hose 15
can be easily removed.

(c) Problems to be solved by the invention The above-mentioned guide device for hoses, cables, etc. has the following problems.

After excavating with the expanded bottom bucket 12, winch 3
is driven to raise the wire rope 8, the Kelly bar 10, and the wide-bottomed bucket 12 to the ground, and discharge the excavated earth and sand. At that time, hose 15 is also attached to hose reel 1.
At the same time, the hose guide device 16 attached to the Kelly bar 10 is also wound up and approaches the hose reel 14. However, if the hose reel 14 is arranged as shown in FIG.
Depending on the position of the winding row of the hose 15 on the hose reel 14, the hose reel 14 and the guide roller 23
As shown in FIG. If the hose 15 comes into contact with the tip of the edge flange 28b and is damaged or detached from the guide rollers 23, 23, the hose 15 may come into contact with the space formed by the axles 21, 22, the support frames 19A, 19B, and the guide roller 23. Sometimes I get tired.

As a countermeasure against this, it is sufficient to make the compression spring 26 strong so that it does not bend when pressed by the hose 15 to some extent. Since it is caused by an uncertain sideways movement of 15, its magnitude cannot be quantitatively grasped. In addition, if the compression spring 26 is made strong, the guide roller 23 must be pushed and moved with a strong force when attaching and detaching the hose 15, so that the ease of attachment and detachment is lost.

This invention was made in view of these problems, and it is a hose, cable, etc. that can be securely held by a guide roller without losing the ease of attaching and detaching the hose, cable, etc. The purpose of this invention is to provide a guidance device for the following.

(d) Means for solving the problem This invention is aimed at achieving the above-mentioned object, and the diameters of the edge ribs of the guide grooves of a pair of guide rollers disposed opposite to each other are made to be different from each other. ,
The guide rollers are mounted on parallel axles so that the large-diameter edge flange of one guide roller faces the small-diameter edge flange of the other guide roller, and one guide roller is slidable in the axial direction. In a guide device such as a hose or cable where the other guide roller is fixed in the axial direction, a locking fitting fixed in the axial direction is rotatably attached to the axle on the side of the guide roller fixed in the axial direction. A locking part is provided on the side opposite to the mounting part of the metal fitting, so that when the locking metal fitting is rotated, the locking part is hooked onto the axle on the opposing guide roller side and stops the sliding of the opposing guide roller in the axial direction. do.

(e) Function When guiding hoses, cables, etc., the locking part of the locking fitting is hooked on the axle, and the locking part restricts the axial movement of the guide roller on the sliding side. When attaching or detaching a hose, cable, etc., the locking metal fitting is rotated to release the locking portion from the axle, and the sliding guide roller is moved in the axial direction.

(f) Embodiment An embodiment of this invention will be explained with reference to FIGS. 1 to 4.

Support frames 19A and 19B (19B not shown) are attached to the Kerry bar 10 in the same manner as previously described, and both support frames are connected to each other by bolts (not shown). Axles 27 and 28 are attached to the side surfaces of the support frames 19A and 19B in parallel on the same horizontal plane, and the outer ends of each axle 27 and 28 have diameters of the edge flanges 23a and 23b of the guide grooves. Different guide rollers 23 are respectively attached. The large-diameter edge flange 23a of one guide roller 23 faces the small-diameter edge flange 23b of the other guide roller 23. A stopper 24 that prevents the guide roller 23 from coming off is fixed to the end face of each axle 27, 28 by a bolt 25.

Support frame 19A of axle 27, guide roller 2
A locking metal fitting 29 consisting of a cylindrical portion 29a and a locking plate 29b is rotatably attached to the portion between 3 and 3. That is, the hollow hole of the cylindrical portion 29a and the hole provided in the locking plate 29b are fitted into the axle 27. At the opposite end of the locking plate 29b,
Notch 29 as a locking part to hook onto axle 28
c is provided. Cylindrical portion 29a and locking plate 29
It may be constructed integrally with b, or they may be separate parts.

When attaching and detaching the hose 15, the locking plate 29b is rotated clockwise about the axle 27 as shown in FIG. 4, and the notch 29c is removed from the axle 28. Then, when the guide roller 23 on the axle 28 is pushed inward, the guide roller 23 moves freely in the axial direction since there is nothing to restrain it.
In this state, connect the hose 15 to the fixed side (axle 27
side) into the guide groove of the guide roller 23, or remove it from the guide groove. Axle 2 moved by being pushed
Return the guide roller 23 on the 8 side to its original position, and remove the locking plate 29b.
is rotated counterclockwise about the axle 27, and its notch 29c is hooked on the axle 28.
As a result, the guide roller 23 on the axle 28 side cannot move in the axial direction and is fixed. As shown in FIG. 1, even if a pressing force is applied to the guide roller 23 due to the bending of the hose 15 in the direction of the hose reel 14, the opposing guide rollers 23, 2
3 does not move in the axial direction, so the hose 15 does not come out.

FIG. 5 shows another embodiment of this invention in which the axle 27 is provided with a stepped portion and the locking plate 29b and the guide roller 23 are prevented from moving inward through the stepped portion. That is, the guide roller 2
3 and the holes in the locking plate 29b are fitted into the small diameter portion of the axle 27.

The operation of this embodiment is similar to the previous embodiment.

(g) Effects of the device According to the device explained above, the following effects can be obtained.

(1) The locking fittings can reliably stop the guide roller from moving in the axial direction, thereby preventing hoses, cables, etc. from coming off.

(2) The ease of attaching and detaching hoses and cables is not lost at all.

(3) Since the locking metal fitting is attached to the axle of the fixed side guide roller, it will not fall off even when the locking is released, and the locking metal fitting will not be lost.

(4) When guiding hoses, cables, etc., the guide rollers do not move in the axial direction, so hoses, cables, etc.
Cables and the like do not come into contact with the tips of the edge flanges of the guide rollers, thus preventing them from being damaged.

[Brief explanation of the drawing]

Figures 1 to 4 show an embodiment of this invention, in which Figure 1 is a cross-sectional side view, Figure 2 is a cross-sectional view of Figure 1, and Figure 3 is a cross-sectional view of Figure 2. , FIG. 4 is a diagram showing a state in which the guide roller on the sliding side has been moved from the state shown in FIG. 2, FIG. 5 is a sectional view corresponding to FIG. 2 showing another embodiment of this invention, and FIG.
The figure is a side view showing an earth drill for expanding the bottom, Figure 7 is an enlarged side view showing the bottom expanding bucket and stabilizer in Figure 6, Figure 8 is a side view showing a conventional hose guide device, Figure 9 is the figure 8 FIG. 10 is a cross-sectional view taken from FIG. 8.

Claims (1)

[Scope of utility model registration request] The diameters of the edge flange portions of the guide grooves of a pair of guide rollers arranged to face each other are made to be different from each other, such that the large diameter edge flange portion of one guide roller faces the small diameter edge flange portion of the other guide roller. The guide rollers are attached to parallel axles as shown in the figure, one guide roller can slide in the axial direction, and the other guide roller is fixed in the axial direction in a guide device such as a hose or cable that is fixed in the axial direction. A locking metal fitting fixed in the axial direction is rotatably attached to the axle on the guide roller side, and by rotating the locking metal fitting on the side opposite to the installation side, the locking metal fitting is attached to the axle on the opposing guide roller side. A guiding device for hoses, cables, etc., characterized in that a locking portion is provided for stopping the sliding of an opposing guide roller in the axial direction.