JPH10169348A - Excavation work device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To set work implement easily, to improve the efficiency of excavation works and to apply a sufficient thrust to the work implement. SOLUTION: In an upper machine 3, an auger device 3b, having a penetrating- through structure capable of being penetrated by a work implement such as an auger screw 11, a casing 10, etc., is loaded on a self-propelled device 3a capable of propelling itself along a leader 1. There is provided a lower machine 4, on which an auger device 4b having a penetrating-through structure capable of being penetrated by the work implement or a work implement holder is installed on a self-propelled device 4a capable of propelling itself under the upper machine 3.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an excavating operation device which includes an auger device which can be moved up and down along a leader, and which performs an excavation operation by connecting a working tool such as a casing and an auger screw to the auger device.

[0002]

2. Description of the Related Art In a conventional excavating work apparatus,
Since a work tool such as an auger screw or a casing is connected to a lower part of one auger device which can be moved up and down along a leader to perform excavation work, for example, by using a casing and an auger screw inserted therein. When excavation work is performed while these are sequentially added, it is difficult to set the working tool to the auger device at the time of addition, and therefore, the addition work takes time, and the excavation work efficiency is reduced. Further, in this case, since only the thrust of one auger device acts on the casing and the auger screw, a sufficient excavating force cannot be obtained. Further, in such excavation work, after the preceding casing and the auger screw have penetrated to a predetermined depth, the preceding casing and the auger screw are left in the ground until the addition of the next casing and the auger screw is completed. However, the remaining casing was tightened by the earth pressure resistance of the surrounding ground, and it was extremely difficult to penetrate the casing after the refilling.

[0003] The problem to be solved by the present invention is that the setting of the work implement can be easily performed, the excavation work efficiency can be improved, and a sufficient thrust can be applied to the work implement. An object of the present invention is to prevent the preceding work tool remaining in the ground when the work tool is replenished from being tightened by earth pressure, and to easily perform rotational press-fit of the work tool after the replenishment.

[0004]

According to a first aspect of the present invention, there is provided a self-propelled device that is capable of self-propelling along a leader.
a, an upper machine 3 equipped with an auger device 3b having a through-hole structure through which a working tool such as an auger screw 11 and a casing 10 can penetrate, and a self-propelled device 4a capable of self-propelling below the upper machine 3, An auger device 4b having a through-hole structure through which a work tool can penetrate, or a lower machine 4 equipped with a work tool holding device 24. In this excavation work apparatus, it is assumed that the auger devices 3b and 4b connect the work tools and apply a rotational force thereto. Further, the work tool holding device 21 merely connects and holds the work tool such as the casing 10 and does not give a rotational force thereto.

A second aspect of the present invention relates to the excavating work apparatus according to the first aspect, wherein the self-propelled devices 3a, 4a of the upper and lower machines 3, 4 are provided.
Are driven by engagement with a rack 9 provided along the reader 1.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In FIGS. 1 and 2 showing an excavating work apparatus according to the present invention, reference numeral 1 denotes a leader which is held in a vertical position by a crawler crane K1 or the like, and 2 denotes a pair arranged along the reader 1. Guide rail. Reference numeral 3 denotes an upper machine that moves up and down along the reader 1. The upper machine 3 includes a self-propelled device 3a supported and guided by a guide rail 2, and an auger device 3b mounted on the self-propelled device 3a. Reference numeral 4 denotes a lower machine that moves up and down along the reader 1. The self-propelled device 4a is disposed below the upper machine 3 and supported and guided by the guide rail 2, and is mounted on the self-propelled device 4a. And an auger device 4b.

The self-propelled devices 3a, 4a of the upper and lower machines 3, 4
Have the same structure. As shown in FIG. 3, each of the self-propelled devices 3a and 4a is mounted on a driving sprocket 6 and a driven sprocket 7 driven by a motor (not shown), and on both sprockets 6 and 7. And an endless chain 8 mounted on the guide rails 2, 2 of the reader 1.
When driven by being hung on a rack 9 arranged side by side between them, the rack 9 moves up and down along the guide rail 2. Thus, each of the self-propelled devices 3a and 4a moves downward by rotating the driving sprocket 6 clockwise with respect to FIG. 3, and moves upward by rotating the driving sprocket 6 counterclockwise. According to the self-propelled devices 3a and 4a having such a configuration, the self-propelled devices can be made compact and small, and sufficient thrust can be exerted and stable vertical movement along the guide rails 2 can be achieved. Can be performed. The self-propelled devices 3a and 4a are not limited to the rack and chain drive system described above, but may employ a rack and pinion system or the like.

As shown in FIG. 2, the auger device 3b of the upper machine 3 has a hollow portion 12 through which working tools such as an auger screw 11 and a casing 10 can penetrate vertically, and a motor ( A cylindrical rotary shaft 13 driven by a motor (not shown) is supported. This rotating shaft 13
At the upper end of the rotary shaft 13 is provided a connected portion 16 detachably connected to the connecting flange 15 of the auger screw connecting tool 14 as shown in FIG. A chuck portion 17 having a well-known structure for detachably holding a surface is provided. The auger device 4b of the lower machine 4 has the same structure as the auger device 3b of the upper machine 3 except that the connected portion 16 is not provided at the upper end of the rotating shaft 13.

As shown in FIGS. 1 and 2, the auger screw connecting member 14 is connected to a connecting flange 15 connected via a swivel 19 to a lower part of a suspension ring 18 supported by a wire by a crawler crane K2. And an engagement portion 20 for engaging the upper end of the auger screw 11. Thus, in order to connect the auger screw 11 to the upper machine 3, the auger screw connector 14 is lowered and the auger screw 11 penetrating through the hollow portion 12 of the auger device 3b as shown by the phantom line in FIG. Engagement part 2 at upper end protrusion
After the engagement of the auger screw 1 with the auger screw 1 by further lowering the auger screw connector 14 and engaging the connecting flange 15 with the connected portion 16 of the auger device 3b.
1 can be operatively connected to the auger device 3b of the upper machine 3. Although illustration and detailed explanation are omitted, on the auger device 3b side, the connecting flange 15 of the auger screw connector 14 is engaged with the connected portion 16 of the rotating shaft 13 and the upper end of the auger screw 11 is engaged. A lock mechanism including a detachable lock cylinder for locking the connecting flange 15 to the rotating shaft 13 in a state of being engaged with the joint 20 is provided. By releasing the lock mechanism, the above-described engagement is performed. The auger screw 11 can be removed and the auger screw 11 can be separated from the auger device 3b.

Next, an example of a method of using the excavating work apparatus having the above-described configuration will be described with reference to FIGS. In this use example, the casing 1 is used as a working tool.
It is assumed that the excavation work is performed by using the auger screw 11 and the auger screw 11 inserted therein.

When excavating the ground, first, the auger screw 11 and the casing 10 are attached to the upper machine 3 and the lower machine 4. In this attachment, as shown by the solid line in FIG. 1, the upper machine 3 and the lower machine 4 are first moved to the lower part of the reader 1, and from this state, the casing 10 and the auger screw 11 inserted therein are removed. The machine is suspended by the crawler crane K2, passed through the hollow portions 12 and 12 of the upper and lower machines 3 and 4 from above, and put on the ground. In this low position both machines 3, 4
Since the casing 10 and the auger screw 11 can be inserted into the housing 3 and the working tools can be held by the two machines 3 and 4, the above-described hanging operation is facilitated.

Then, the upper and lower machines 3, 4 are connected to the reader 1
The upper end of the auger screw 11 is connected to the auger device 3b of the upper machine 3, and the upper end of the casing 10 is connected to the auger device 4b of the lower machine 4, as shown in FIG. These connecting operations are performed by the auger screw connecting tool 14 and the chuck 17 as already described with reference to FIG. At this time, the upper end of the casing 10 projects a required length from the upper end of the auger device 4b of the lower machine 4 so that the upper end of the casing 10 can be connected to the lower end of the subsequent casing 10.

From the state shown in FIG. 5, the upper and lower machines 3, 4 are moved down along the reader 1 by the self-propelled devices 3a, 4a at the same speed, and the auger screw 11 is moved.
The ground is excavated while rotating with the auger device 3b and the casing 10 with the auger device 4b. When the casing 10 has penetrated to a predetermined depth as shown in the figure, the driving of both self-propelled devices 3a and 4a is stopped, and the driving of the auger device 3b of the upper machine 3 is stopped. Auger screw 11
And leave it in the ground, and the auger device 4 of the lower machine 4
b is driven as it is to continue the rotation of the casing 10 that has penetrated into the ground. Separation of the leading auger screw 11 from the upper machine 3 is performed by the crawler crane K2.
This is performed by lifting the auger screw connector 14 from the upper end of the auger device 3b and the preceding auger screw 11 by lifting the auger screw connector 14 or the like.

After the leading auger screw 11 is separated from the upper machine 3 as described above, the auger screw coupling 14 is removed, and the upper machine 3 is moved up to a position appropriately separated from the lower machine 4, and the subsequent machine is moved thereat. The casing 10 and the auger screw 11 are inserted from above into the auger device 3b of the upper machine 3 in the manner shown in FIG. 1, and the upper machine 3 is moved to the upper part of the reader 1 so that the subsequent machine as shown in FIG. The upper end of the auger screw 11 is connected to the auger device 3b of the upper machine 3 by the auger screw connector 14, and the upper end of the subsequent casing 10 is connected to the same auger device 3b. Then, the upper machine 3 is moved down, and the subsequent auger screw 11 and the casing 10 are moved as shown in FIG.
1 and the casing 10 are connected by a known method.

After the connection of the preceding auger screw 11 and the casing 10 has been completed as described above, the upper machine 3 is moved downward, and the casing 10 and the auger screw 11 are rotated by the auger device 3b. Drill to the depth. In this case, the lower machine 4 may simply stop the drive of the self-propelled device 4a and the auger device 4b and guide the downward movement of the casing 10 while keeping the lower device 4 below the reader 1, or the lower position thereof. The casing 10 is gripped by the chuck portion 17 of the auger device 4b with the auger device 3b of the upper machine 3.
The casing 10 may be rotated together with the
Alternatively, as shown in FIG. 5, after the lower machine 4 is once moved up to the vicinity of the upper machine 3, and while maintaining a certain distance therefrom, while driving the self-propelled device 4a and the auger device 4b, the upper machine 4 is moved upward. You may make it move down with the machine 3.

According to the above-described method of use, the casing 1
When the refilling of the auger screw 11 and the auger screw 11 is performed, the subsequent casing 10 and the auger screw 11 are set in the auger device 3b of the upper machine 3 and the preceding casing left in the ground until the refilling is completed. Since the rotation of the casing 10 by the auger device 4b of the lower machine 4 can be continued, the casing 10 left in the ground can be prevented from being tightened due to earth pressure resistance, and the casing can be easily press-fitted after refilling. Further, since the casing 10 can be rotationally press-fitted by both the upper machine 3 and the lower machine 4, the press-fitting operation of the casing 10 is facilitated.

The auger device 3 of the upper and lower machines 3 and 4
b, 4b each have a hollow structure having a hollow portion 12, so that the casing 10 and the auger screw 1
1 can be suspended and inserted into both auger devices 3b and 4b by a crane or the like, and the casing 1
The setting of the auger screw 11 and the auger screw 11 can be easily performed at a low position, and in particular, the addition work time can be reduced. The auger screw connector 14 of the upper machine 3 can connect not only the auger screw 11 but also a keriba or the like.

As described above, in the embodiment shown in FIGS. 1 to 3 and FIG.
Although the auger devices 3b and 4b are mounted on a and 4a, as shown in FIG. 4, the lower machine 4 has a self-propelled device 4a and a hollow portion 12 to form a hollow structure. Work tool holding device 21 having chuck portion 17 at the bottom
It may be composed of That is, the lower machine 4 shown in FIG. 4 does not have an auger device like the upper machine 3, has a hollow structure through which working tools such as the casing 10 and the auger screw 11 can penetrate, and chucks the working tool such as the casing 10. It can be held by the part 17.
In this case, the work tool holding device 21 serves as a guide for guiding work tools such as the casing 10 and the auger screw 11 inserted into the hollow portion 12, and the work tool holding device 21 is a self-propelled device 4a. As a result, the excavator can move up and down, so that straightness of excavation by the work tool can be secured, and good excavation work can be performed.

[0019]

According to the first aspect of the present invention, there is provided an excavating work apparatus comprising: an upper machine having a self-propelled device capable of self-propelling along a leader and having an auger device having a through-hole structure capable of penetrating a working tool; Since it consists of an auger device with a through-hole structure or a work tool holding device that allows work tools to penetrate into a possible self-propelled device, the work tools of the casing and auger screw can be moved at a lower position to the upper auger device and the lower machine. Can be inserted into and supported by the auger device or the work tool holding device, so that the setting of the work tool can be easily performed, and in particular, the refilling work time can be reduced. In addition, during the excavation work, the auger device or the work tool holding device of the lower machine can function as a guide for the work tool, and the lower machine can be freely moved along the leader similarly to the upper machine. In addition, the straightness of excavation by the working tool can be ensured, and good excavation work can be performed. Further, a sufficient thrust can be applied to the work implement by the self-propelled devices of the upper and lower machines.

Further, by providing an auger device for each of the upper and lower machines, for example, when excavation work is performed while adding a casing and an auger screw to each other, the subsequent casing and auger screw are set in the auger device and the addition is performed. Until the end,
The preceding casing left in the ground can continue to be rotated by the auger device of the lower machine, so that the casing left in the ground can be prevented from being tightened by earth pressure resistance, and the rotation of the casing after refilling The press-fitting can be easily performed, and the working tool such as the casing can be rotationally press-fitted by both the upper and lower auger devices.

According to the second aspect, the self-propelled device of each of the upper and lower machines is driven by engagement with a rack provided along the reader. Not only thrust, but also
The rack drive method enables stable vertical movement along the guide rails of the reader, and enables good excavation work.

[Brief description of the drawings]

FIG. 1 is a side view showing an excavating work device according to the present invention.

FIG. 2 is an enlarged side view showing a main part of the excavating operation device according to the first embodiment.

FIG. 3 is an enlarged side view of each of the upper and lower machines.

FIG. 4 is a side view showing an example of an excavation work device in which a work tool holding device is mounted on a self-propelled device of a lower machine.

FIG. 5 is a process chart showing an example of use of the excavating work device of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Leader 2 Guide rail 3 Upper machine 3a Self-propelled device 3b Auger device 4 Lower machine 4a Self-propelled device 4b Auger device 9 Rack 10 Casing (work implement) 11 Auger screw (work implement) 12 Hollow part 14 Auger screw connector 21 Work Fixture holding device

Claims (2)

[Claims] 1. A self-propelled device capable of self-propelled along a reader,
An upper machine equipped with an auger device of a through-hole structure through which a working tool such as an auger screw or a casing can penetrate, and a through-hole structure through which the working tool can penetrate into a self-propelled device capable of self-running below the upper machine And a lower machine equipped with the auger device or the work tool holding device. 2. The excavating work device according to claim 1, wherein the self-propelled devices of the upper and lower machines are driven by engagement with a rack provided along the leader.