JPS6147274B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a strut head telescopic punching machine. More specifically, this invention relates to a punching machine in which the head of a support (leader) can be expanded and contracted (raised and lowered), thereby allowing an auger machine and a slide leader to be freely engaged and disengaged.

With conventional punching machines, it is difficult to move around the worksite or pass through overhead obstacles such as overhead wires and elevated structures.
Each time, the boom had to be disassembled and folded, and the support had to be disassembled and laid down. Therefore, the work was inefficient. In such cases, after arriving at the next site, the boom was not assembled, the leader was laid down on its side, and the leader was not assembled and erected, and then work began. Regarding the engagement and disengagement device between the auger machine and the slide leader when the auger machine is raised and lowered during this work, there is a prior art in Japanese Patent Laid-Open No. 55-42962, which describes it, but it is insufficient. That is, this engagement/disengagement device of JP-A-55-42962 has the first
In the case of Fig. 2 (Monken), Fig. 2 (Vibro), and Fig. 3 (pulley block with chuck), the purpose may be fully achieved, but in the case of Fig. 4, that is, in the case of an auger machine, It is flawed, inadequate, and even dangerous. This is because the auger machine is rotated during work, and the drill bit is dug deep into the ground. Therefore, due to the rotational force of the auger machine and the reaction force with the drilling drill,
In this Japanese Patent Application Laid-Open No. 55-42962, there is a risk that the auger machine will come off from the short guide member 5. In other words, the auger machine comes off from the short guide member 5 due to the excessive weight of the leader slide tool 17. Conventional punching machines have these drawbacks.

The invention aims to eliminate the above-mentioned drawbacks.

Next, embodiments of the present invention will be described based on the drawings. FIG. 1 is a side view of the punching machine in this invention;
2A, 2B, and 2C are side views of the main parts, and FIG. 3 is an enlarged detailed view of the main parts. Note that A in FIG. 2 shows the state at the time of contraction, and B and C show the state at the time of expansion.

1 is the after-leader [1a is the upper part of the after-leader, 1b is the lower part of the after-leader. ], and a leader self-supporting cylinder 10 is attached to the front part of the driver's cab 9 provided on the caterpillar 8. [This cylinder 10 allows the after-leader 1 to stand on its own and support it when it is lying on its side. ] and is supported by the front rigger cylinder 20. The upper part of the after-leader 1a and the lower part of the after-leader 1b are designed so that they can be folded at the crease during long-distance transportation (can be laid down horizontally).
The flange portion of the bent portion is fastened with bolts, and is assembled in a removable manner. [The after-leader 1' and top sheave portion 4' in FIG. 1 are shown in the state during long-distance transportation. ] Note that guide rails 12 and 12' (Figs. 1 and 3) are provided on one side of the after-leader upper part 1a and the after-reeder lower part 1b, respectively, to control the rise and fall of the auger machine 6 during expansion and contraction. It makes it seem possible. The reason why the auger machine 6 is made to run on the guide rail in this way is to prevent rotation when the auger machine 6 is in operation.

This is because the guide rails 13, 13' (FIG. 3) attached to one side of the slide leader 3 have the same effect as described above.

In this way, the auger machine 6 and the slide leader 3 are smoothly integrated (engaged) and are moved up and down during expansion and contraction. The structure of this integration (engagement) and the structure of separation will be described later.

Reference numeral 2 denotes an inner leader, which is provided inside the after-leader 1 and can be expanded and contracted (elevated and lowered) by a multi-stage hydraulic cylinder 11.

This inner leader 2 is provided with a slide leader 3 on its outer peripheral surface, and the slide leader 3 is able to move up and down on the outer peripheral surface of the inner leader 2. This slide reader 3 part 1
On the side, there is a guide rail 1 in the axial direction as shown above.
3, 13' are provided. (FIG. 3) An auger machine 6 is movable up and down the guide rails 13, 13' as described later.

Reference numeral 4 denotes a top sheave portion provided at the head of the inner leader 2, and is provided with a pulley and the like, although not shown. A wire rope 5 is connected to an auger machine 6 via this pulley.

Therefore, the auger machine 6 is raised and lowered via the pulley and the wire rope 5 in response to a command from the driver's cab 9.

Next, FIG. 3 will be explained.

FIG. 3 is an enlarged detailed view showing the state of engagement between the auger machine 6 and the slide leader 3 when the inner leader 2 is extended. Although not shown, detachment is easily performed by the reverse operation.

First, in FIG. 3, this drawing shows the state of engagement between the auger machine 6 and the slide leader 3, taken longitudinally in FIG. 1 and viewed from the left side (the auger machine side).

7 is a reaction force stopper attached to the auger machine 6, and when the reaction force stopper receiver 19 attached to the slide leader 3 is extended (raised), the guides 21, 21' [attached to the slide leader 3 There is. ] on the left and right springs 18,
18' and are pushed apart and fitted together. When retracting (lowering), the reaction force stopper 7 changes from the fitted state to the reaction force stopper receiver 19.
] The above-mentioned guides 21, 21' can be pushed open left and right to retract (lower). In this way, the auger machine 6 is separated from the slide leader 3.

Reference numeral 15 denotes a protruding portion with a triangular tip section attached to the auger machine 6, and a guide roller 17 of a guide 17 provided on the slide leader 3.
a, 17'a can be pushed left and right to raise it.
At this time, the lower guide ends 17c, 17'c (shaped in a hook shape) are configured to catch the flange 16. When retracted (descent), the guide lower end portions 17c, 17'c are disengaged, and the flange 16 is separated.
It goes without saying that the above operation is performed at the fulcrums 17b and 17'b.

Note that in the above, the flange 16 is attached to the slide leader 3.

Reference numerals 18 and 18' are springs, as described above, which act to return the guides 21 and 21', which have been pushed apart from side to side, back to their original positions. As shown in the figure, these springs 18, 18' are connected to the guide 2.
1, 21' and the flange 16.

12, 12', 13, 13' are guide rails as described above, and when the auger machine 6 rises (extends), the guide rails 13, 13, which are attached to the slide leader 3 are connected to the guide rails 12, 12'.
Transfer smoothly to 13' [Station 1
4, 14']. Therefore, even when retracting (lowering), it is possible to smoothly shift to the opposite direction.

Next, let's talk about the operation.

Now, when moving to the site for work, if movement is difficult due to the presence of overhead wires, elevated structures, or other obstacles, after-sales leader 1
The leader telescopic cylinder 11 built into the inner leader 2 is activated (in the retracting direction), and the inner leader 2 is first retracted (lowered). Therefore, the slide leader 3 is also lowered. [FIG. 2A] At this time, the auger machine 6 and the slide leader 3 are lowered to the head of the after leader 1 while being engaged with each other. In this way, this punching machine can easily pass through obstacles such as overhead wires and elevated tracks.

In addition, when transporting long distances, and therefore changing the work site to a distant location, the upper part of the after-sales leader 1
a from the after leader 1b, and remove the top sheave part 4, the inner leader 2,
Lay it down sideways with slide reader 3 [1st
This is shown in Figure 1'. ], it can also be transported. In this case, the auger machine 6 is detached from the slide leader 3 via the wire rope 5 and the guide rails 12, 12' and lowered to the after leader lower part 1b. In this way, the auger machine 6 is positioned in front of the after-leader lower part 1b. [In Fig. 1, 6' is an auger machine during transportation. ] After long-distance transportation and after arriving at the work site, the upper part of the after-leader 1a, which is laid down on its side, becomes freestanding together with the top sheave section 4, inner leader 2, and slide leader 3 [by the leader self-supporting cylinder 10]. ] Complete the assembly and begin work. Therefore, the auger machine 6 is the inner leader 2.
rises with the extension (rise) of [guide rail 1
2 and 12'], and then are eventually engaged by the above-described structure of the slide leader 3 (by the reaction force stopper 7, etc.), and can continue to rise together. In this way, the auger machine 6 has guide rails 12, 12', 13, 1
The slide leader 3 can be engaged with the slide leader 3 to perform work while being prevented from rotating through the slide leader 3'. Even if the auger machine 6 rises and falls while rotating during work, since it is equipped with the engagement/disengagement device according to the present invention, the auger machine 6 smoothly moves to the slide leader 3 and is brought together with the slide leader 3, and the auger machine 6 slides. There is no deviation from the leader 3, so there is no danger like in the prior art.

As described above, the punching machine according to the present invention can overcome the drawbacks of conventional punching machines and can be easily moved when moving to the site. Therefore, it is efficient in operation.

[Brief explanation of the drawing]

FIG. 1 is a side view, FIG. 2 A, B, and C are side views of the main parts, and FIG. 3 is an enlarged detailed view of the main parts. 1 is the after leader, 1a is the upper part of the after leader, 1b is the lower part of the after leader, 2 is the inner leader, 3 is the slide leader, 4 is the top sheave part, 5 is the wire rope, 6 and 6' are the auger machine, 6a is the cutter, 7 is a reaction force stopper, 8 is a caterpillar, 9 is a driver's cab, 10 is a leader independent cylinder, 11 is a leader telescopic cylinder, 12, 12' are guide rails, 13, 1
3' is a guide rail, 14, 14' is a station, 15 is a protrusion, 16 is a flange, 17 is a guide, 17a, 17'a are guide rollers, 17b,
17'b is a fulcrum, 17c, 17'c are guide lower ends, 18, 18' are springs, 19 is a reaction force stopper receiver, 20 is a front rigger cylinder, 21,
21' is a guide.

Claims (1)

[Claims] 1. An inner leader having a top sheave part is provided inside the after leader provided with a guide rail, and the inner leader is made to be expandable and contractible, and a slide leader having a guide rail is provided on the outer peripheral surface of the inner leader, and the top sheave part In a prop head expansion and contraction punching machine equipped with an auger machine that is connected with a wire rope through a wire rope and that can move up and down, the auger machine has a reaction force stopper and a tip cross section in the center part facing the slide leader. A triangular protrusion is attached to the lower part of the reaction force stopper, the slide leader is provided with a reaction force stopper receiver facing the auger machine and adapted to receive the reaction force stopper, and the stopper receiver is attached to the stopper receiver. A guide is provided to be able to move laterally to the left and right of the reaction force stopper receiver, and the guide and a flange provided on the slide leader are connected by a spring, and the slide leader has the tip section 3. Guides for guiding the angular protrusion are provided on the left and right, each guide is provided with a fulcrum and a guide roller is provided at the upper part, and the hook-shaped guide is arranged at the lower part to hook the flange when ascending and to be disengaged when descending. A strut head telescopic punching machine characterized by being equipped with an engagement/disengagement device provided with a lower end.