JPS6329983Y2 - - 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. 4 and 5.

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, a conventional hose guide device 16 will be explained with reference to FIGS. 6 to 8.

One guide roller 20 is attached to the support frame 19, and the guide roller 2 is attached to the swingable frame 21.
The other guide roller 22 facing 0 is attached. The diameters of the edge flanges of the guide grooves of both guide rollers 20 and 22 are the same. The swingable frame 21 is supported by a support pin 23 so as to be able to swing relative to a support bracket integral with the support frame 19, and is fixed to the support frame 19 by a fixing pin 24. Opposing guide roller 2
A hose 15 is passed between the guide grooves 0 and 21.

This guide device removes the fixing pin 24,
The hose 15 is moved by swinging the swingable frame 21 outward about the support pin 23 as shown by the chain line.
Attach/detach. Therefore, it takes time to insert and remove the pin 24, and the overall structure becomes complicated and heavy.

(c) Problems to be solved by the invention This invention is intended to eliminate the drawbacks of the conventional guide device mentioned above, and is capable of handling hoses, cables, etc. by sliding one of the opposing guide rollers in the axial direction. It is an object of the present invention to provide a guide device that can be easily attached and detached.

(d) Means for solving the problem The guide device for hoses, cables, etc. of this invention has the following features:
The diameters of the edge flanges of the guide grooves of the guide rollers are different from each other, and the guide rollers are arranged on parallel axles so that the large diameter edge flanges of one guide roller face the small diameter edge flanges of the other guide roller. The present invention is characterized in that one guide roller is attached to each of the guide rollers, and one guide roller is slidable in the axial direction, and a means is provided for holding the guide roller in a position facing the other guide roller.

(e) Function Hoses, cables, etc. are attached and detached by sliding one guide roller in the axial direction.

(f) Embodiment An embodiment of this invention will be explained with reference to FIGS. 1 to 3.

Support frames 24A and 24B are attached to the Kelly bar 10, and both support frames are coupled to each other by bolts 25. Support frame bodies 24A, 24B
The axle 26 and the spring receiving collar 27 are on the side surface of the
axles 27 are mounted parallel to each other on the same horizontal plane, and guide rollers 28 having guide groove edge flange portions 28a, 28b with different diameters are mounted on each axle 26, 27, respectively. The large-diameter edge flange 28a of one guide roller 28 faces the small-diameter edge flange 28b of the other guide roller 28. Each axle 26,2
A stopper 29 that prevents the guide roller 28 from coming off is fixed to the end face of the guide roller 7 by a bolt 30, and a compression spring 31 is attached between the spring receiving collar 27a and the guide roller 28. The hose 15 is passed between the guide grooves of the pair of opposing guide rollers 28, 28.

Normally, one guide roller 28 is pushed by a compression spring 31 and faces the other guide roller 28, so that the hose 15 does not come off. When removing the hose 15, move the guide roller 28 by hand to the compression spring 31.
, and slide it inward as shown by the chain line. Thereby, the hose 15 can be easily removed. S shown in FIG. 3 represents the distance between the hose 15 and the small diameter edge flange portion 28b when the hose 15 is in contact with the guide groove of the guide roller 28 that is not allowed to slide. There is no problem if S is S>O, but S≦
Even in the case of O, since the hose 15, cable, etc. are elastic bodies, they can be attached to and detached from the guide roller.

In addition, as an example, an explanation has been given of an example in which the Kelly bar drive device 7 for rotating the bucket is provided at the top of the front frame, but if a hydraulic motor for driving the bucket is provided on the top of a normal earth drill bucket In this case, one hose reel 14 and one hose 15 may be provided, and in this case, one set of guide devices may be installed.

(g) Effects of the invention According to this invention, by sliding one of the opposing guide rollers, hoses, cables, etc. can be easily attached and detached, the structure of the guide device is simplified, and the device can be operated easily. It can be made lighter.

[Brief explanation of drawings]

Figures 1 to 3 show an embodiment of this invention; Figure 1 is a sectional view of Figure 2;
The figure is a cross-sectional view of Fig. 1, Fig. 3 is an explanatory plan view of the guide roller, Fig. 4 is a side view showing the ground drill for bottom expansion, and Fig. 5 is an enlarged view of the bottom expansion bucket and stabilizer in Fig. 4. Side view, No. 6
7 shows a conventional hose guide device, FIG. 6 is a cross-sectional view of FIG. 7, FIG. 7 is a cross-sectional view of FIG. 6, and FIG. 8 is a conventional hose guide device. It is an explanatory plan view showing a guide roller. 24A, 24B...Support frame, 26...Axle, 27...Axle, 27a...Spring receiving collar, 28...Guide roller, 28a...Large diameter edge collar, 28b...Small diameter edge collar part, 29...stopper, 30...bolt, 31...compression spring.

Claims (1)

[Scope of utility model registration request] In a guide device for passing a hose, cable, etc. between the guide grooves of a pair of guide rollers arranged opposite to each other, the diameters of the edge ribs of the guide grooves of the guide rollers are made different from each other, and the large diameter end of one guide roller is The guide rollers are each mounted on parallel axles so that the edge collar faces the small-diameter edge collar of the other guide roller, and one guide roller is slidable in the axial direction, and the guide roller 1. A guide device comprising means for holding the guide roller in a position facing the other guide roller.