JP3828644B2 - Method of excavating by connecting multi-axis rotating shaft group - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a method for excavating by connecting a multi-axis rotating shaft group.
[0002]
[Prior art]
Conventionally, the deep excavation hole 10 is formed in the ground by the following method. That is, as shown in FIG. 13, the upper end of each rotary shaft 1 of a multi-axis rotary shaft group 3 in which a plurality of rotary shafts 1 are rotatably connected and supported by a connecting member 2 is provided on a heavy machine 4 so as to be movable up and down. Each of the rotating shafts 5 is connected to each output shaft 6 by fitting a projection 7 having a square horizontal section and a square hole 8 having a square horizontal section. 1 is rotated to excavate the ground 9, and after the first stage excavation by the multi-axis rotary shaft group 3, the multi-axis rotary shaft group 3 remains in the first stage excavation hole 10. The multi-axis rotating shaft group 3 is separated from the rotating device 5, and another multi-axis rotating shaft group 3 is lifted by a hanging tool 29 provided on the crane 14 at the connecting member 2, and another multi-axis lifted by the crane 14. The lower end portion of each rotating shaft 1 of the rotating shaft group 3 is left in the excavation hole 10 respectively. The upper end of each rotary shaft 1 of the multi-axis rotary shaft group 3 is opposed to each other, and the upper and lower ends of each set of rotary shafts 1 are horizontally aligned with the upper end of the lower rotary shaft 1 and the lower end of the upper rotary shaft 1. Each of the upper rotary shafts 1 is rotated and aligned so that the projection 7 having a square cross section and the square hole 8 having a horizontal cross section square coincide with each other in the circumferential direction. The groups 3 of the rotating shafts 1 that are vertically moved downward are connected to each other by fitting the protrusions 7 having a square horizontal section and the square holes 8 having a horizontal section square, and then connecting each of the suspension devices. The member is removed from the upper end of each rotary shaft 1 of the upper multi-axis rotary shaft group 3, and then the upper multi-axis rotary shaft group 3 is connected to each output shaft of the rotating device 5 provided on the heavy machine 4 so as to be movable up and down. The upper end of each rotary shaft 1 is fitted with a projection 7 having a horizontal cross section and a square hole 8 having a horizontal cross section. And then rotating each rotary shaft 1 of the multi-axis rotary shaft group 3 connected up and down to excavate the ground 9 and perform the second stage excavation downward following the first stage excavation. It is.
[0003]
However, in the above-described conventional example, another multi-axis rotating shaft group suspended by a crane 14 on the upper end portion of each rotating shaft 1 of the multi-axis rotating shaft group 3 left in the excavation hole 10 after performing the first stage excavation. 3, the connecting member 2 is connected to the crane 14 as shown in FIGS. 13 and 14 when the lower end portion of each rotary shaft 1 is connected by fitting the projection 7 having a horizontal section square and the square hole 8 having a horizontal section square. Since it is suspended by the provided suspending tool 29, each bearing part 18 provided in the connecting member 2 hits against the collar part 19 provided on each rotating shaft 1 (that is, the own weight of each rotating shaft 1 is respectively the collar part 19). Therefore, it is difficult to rotate the rotating shaft 1 independently, and the rotating shaft 1 is rotated to form a horizontal cross section with respect to the lower rotating shaft 1. And the horizontal section square And difficult task of matching the square hole 8 in the circumferential direction, time consuming, it takes a long time in forming the borehole 10 and consequently connects the multi-axis rotational axis group 3 up and down.
[0004]
[Problems to be solved by the invention]
The present invention was invented in view of the problems of the above-described conventional example, and in forming the excavation hole by connecting the multi-axis rotating shaft group up and down, each rotating shaft of the upper and lower multi-axis rotating shaft group is formed. Drilling by connecting multi-axis rotating shaft groups that can easily connect each other in the vertical direction and reduce the construction time for forming the drilling hole by connecting the multi-axis rotating shaft groups up and down It is an object of the present invention to provide a method for doing this.
[0005]
[Means for Solving the Problems]
In order to solve the above-mentioned problems, the method of excavating the multi-axis rotating shaft group according to the present invention is to rotate each of the multi-axis rotating shaft group 3 in which a plurality of rotating shafts 1 are rotatably connected and supported by a connecting member 2. The upper end portion of the shaft 1 is connected to each output shaft 6 of the rotating device 5 provided in the heavy machine 4 so as to be movable up and down by fitting a protrusion 7 having a horizontal cross section and a square hole 8 having a horizontal cross section. In this state, the rotary shafts 1 of the multi-axis rotary shaft group 3 are rotated to excavate the ground 9, and after the first stage excavation by the multi-axis rotary shaft group 3, the multi-axis rotary shaft group 3 is excavated. A suspension device in which the multi-axis rotation shaft group 3 is separated from the rotation device 5 while remaining in the hole 10, and a plurality of connection members 13 are independently suspended from the base material 11 via the suspension member 12. connecting each connection member 13 of the 15 rotatably by the connecting member 2 a rotary shaft 1 of a plurality of respectively Through the suspension device 15 by lifting the substrate 11 by the crane 14 as well as connected to the upper end portion of the rotary shaft 1 of the multi-axis rotational axis group 3 which support and lift the multi-axis rotational axis group 3, hanging on this crane 14 The lower end portion of each rotating shaft 1 of the multi-axis rotating shaft group 3 is opposed to the upper end portion of each rotating shaft 1 of the multi-axis rotating shaft group 3 remaining in the excavation hole 10 and is opposed vertically. Each pair of rotating shafts 1 has a protrusion 7 in which the upper end portion of the lower rotating shaft 1 and the lower end portion of the upper rotating shaft 1 have a horizontal cross section and a square hole 8 having a horizontal cross section in the circumferential direction. The upper rotary shafts 1 are independently rotated and aligned so as to coincide with each other, and after the positioning, the upper multi-axis rotary shaft group 3 is slightly lowered and the respective rotary shafts 1 facing each other vertically are horizontally aligned. Connection is made by fitting a projection 7 having a square cross section with a square hole 8 having a horizontal cross section. Thereafter, each connecting member 13 of the suspension device 15 is removed from the upper end portion of each rotating shaft 1 of the upper multi-axis rotating shaft group 3, and then each output shaft 6 of the rotating device 5 provided in the heavy machine 4 so as to be movable up and down. The upper ends of the rotary shafts 1 of the upper multi-axis rotary shaft group 3 are connected to each other by fitting the projections 7 having a horizontal cross section square shape and the square holes 8 having a horizontal cross section square shape, and then connected vertically. The rotary shaft 1 of the multi-axis rotary shaft group 3 is rotated to excavate the ground 9 and the second stage excavation is performed downward following the first stage excavation. By adopting such a method, when connecting the upper and lower rotary shafts 1 of the upper and lower multi-axis rotary shaft groups 3 to each other, the multi-axis rotary shaft group suspended by the crane 15 by the suspension device 15 is used. 3, each rotating shaft 1 is suspended independently by each connecting member 13, so that each rotating shaft 1 is not subjected to its own weight on the connecting member 2. 1 is independently rotated with a light force, and the rotating shafts 1 that are vertically opposed to each other are made to have a projection 7 having a horizontal cross section and a square hole 8 having a horizontal cross section in the circumferential direction. It can be connected.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
The present invention will be described below based on embodiments shown in the accompanying drawings.
The multi-axis rotating shaft group 3 is configured by rotatably connecting and supporting a plurality of rotating shafts 1 by a connecting member 2. That is, as shown in FIG. 1, the connecting member 2 is configured by joining together half-divided bodies 17 having a plurality of semicircular portions 16 and connecting them with bolts, and by a pair of opposing semicircular portions 16. A cylindrical bearing portion 18 is configured, and the connecting member 2 includes a plurality of the cylindrical bearing portions 18. A plurality of vertically extending portions of the rotary shaft 1 are provided with a pair of flange portions 19 that are opposed to each other with a small gap therebetween. The plurality of rotating shafts 1 are rotatably connected by connecting members 2 at a plurality of locations in the vertical direction. In this case, the bearing portion 18 can be freely rotated between the pair of flange portions 19 of the rotating shaft 1. So that the bearing portion 18 is not displaced in the vertical direction by the pair of upper and lower flange portions 19.
[0008]
Here, each rotary shaft 1 of the multi-axis rotary shaft group 3 is provided with a projection 7 having a horizontal cross-sectional square shape at one end of the upper and lower ends, and a square hole 8 having a horizontal cross-sectional square shape at the other end. (In the embodiment shown in the accompanying drawings, a protrusion 7 having a horizontal cross section square is provided at the lower end portion of the rotary shaft 1 and a square hole 8 having a horizontal cross section square is provided at the upper end portion). A configuration in which the vertically connected rotary shaft 1 can be rotated integrally by connecting the protrusions 7 having a horizontal cross section squared into the square holes 8 having a horizontal cross section square when connecting the ones up and down. It has become. A pin insertion hole 20 is provided in a direction orthogonal to the rotation shaft 1 at the end where the square hole 8 is provided, and the pin insertion hole 20 communicates with the square hole 8. In addition, a pin insertion groove 21 is provided in the protrusion 7 portion, and the pin 22 inserted from the pin insertion hole 20 with the protrusion 7 and the square hole 8 fitted is inserted into the pin insertion groove 21. The fitting between the projection 7 and the square hole 8 is prevented from coming off in the vertical direction.
[0009]
As described above, the multi-axis rotating shaft group 3 in which a plurality of rotating shafts 1 are rotatably connected by the connecting member 2 is attached to a rotating device 5 that is movable up and down provided in a heavy machine 4 such as a crawler crane, and the ground 9 is attached. It is excavated. In this case, an excavation bit 25 is attached to the lower end portion of each rotary shaft 1 of the multi-axis rotary shaft group 3 that is first attached to the rotating device 5. When attaching the excavation bit 25, a horizontal hole having a square cross section or a projection having a horizontal cross section is provided at the upper end of the excavation bit 25, and the horizontal cross section provided at the lower end of the rotary shaft 1. It fits with the part 7 or the square hole 8 having a horizontal cross section and is connected so as not to be pulled up and down using a pin, or the excavation bit 25 is fixed to the lower end of the rotating shaft 1 by direct welding or the like. It is something to do.
[0010]
Further, the rotating shaft 1 is attached to the rotating device 5 of the heavy machine 4 such as a crawler crane as follows. That is, the rotating device 5 is attached so as to be movable up and down along the reader 23 of the heavy machine 4, and the rotating device 5 is provided with a plurality of output shafts 6. The upper ends of the rotary shaft 1 are connected to the plurality of output shafts 6 by fitting the projections 7 having a horizontal cross section square shape and the square holes 8 having a horizontal cross section square shape, that is, in the embodiment, the output shaft 6 is horizontally connected. The projection 7 has a square cross section, and is fitted into the square hole 8 having a horizontal cross section of the upper end portion of the rotary shaft 1 and connected to the projection 7 so as not to be pulled up and down using a pin 22.
[0011]
As described above, in the state where the multi-axis rotating shaft group 3 is attached to the heavy machine 4 (the state shown in FIG. 3), the rotating device 5 is driven to rotate the rotating shafts 1 of the multi-axis rotating shaft group 3 and the ground. 9 is excavated, and the first-stage excavation by the multi-axis rotating shaft group 3 is performed to form the first-stage excavation hole 10 (state of FIG. 4). When the first stage excavation by the multi-axis rotating shaft group 3 is finished, the multi-axis rotating shaft group 3 is separated from the rotating device 5 with the multi-axis rotating shaft group 3 left in the excavation hole 10 as shown in FIG. Next, as shown in FIG. 6, the heavy machine 4 provided with the rotating device 5 separated from the multi-axis rotating device group 3 is moved to the side to stand by, and another multi-axis rotation is performed by the suspension device 15 attached to the crane 14. Each shaft of the multi-axis rotary shaft group 3 that lifts the shaft group 3 and leaves the lower end portion of each rotary shaft 1 of the multi-axis rotary shaft group 3 lifted by the crane 14 in the excavation hole 10. 1 is connected to the upper end portion.
[0012]
Here, as shown in FIGS. 1 and 2, the suspension device 15 used in the present invention suspends a plurality of suspension members 12 downward from the base material 11 suspended from the suspension tool 29 of the crane 14, A connecting member 13 is provided at the lower end of each suspension member 12. The suspension member 12 is configured by connecting a wire 12b to a rotating portion 12a such as a swivel. The rotating part 12a is configured by connecting the lower body 12a ₂ to the upper body 12a _{1 so as} to be rotatable by 360 °. Accordingly, each connection member 13 suspended from the base 11 via the suspension member 12 is independently rotatable. The connecting member 13 is provided with a square hole 8 with a horizontal cross section at the upper end of the rotary shaft 1, a projection 7 with a horizontal cross section that can be fitted to a projection 7 with a horizontal cross section or a square hole 8 with a horizontal cross section. Yes (in the embodiment shown in the accompanying drawings, the connecting member 13 is provided with a projection 7 having a rectangular horizontal section), and a pin insertion groove 21 or a pin insertion hole 20 into which the pin 22 is inserted is provided (in the attached drawing). In the embodiment shown, a pin insertion groove 21 is provided). Further, a hook attachment portion 28 is provided on the upper portion of the base material 11.
[0013]
And the square hole 8 which made the horizontal cross section square at the upper end part of each rotating shaft 1 of the multiaxial rotating shaft group 3 which is going to connect each connection member 13 of the said suspension apparatus 15, and the protrusion 7 which made the horizontal cross section square, The pin 22 is inserted into the pin insertion groove 21 from the pin insertion hole 20 and connected so as not to be pulled up and down. In this state, the multi-axis rotating shaft group 3 is lifted by hooking a hanging tool 29 attached to the lower end portion of the wire of the crane 14 to the hook attaching portion 28 of the hanging device 15. In this way, the lower end portions of the rotary shafts 1 of the multi-axis rotary shaft group 3 lifted by the crane 14 via the suspension device 15 are respectively left in the excavation holes 10. It is made to oppose the upper end part of the rotating shaft 1 (state of FIG. 6).
[0014]
Next, each pair of the rotating shafts 1 that are vertically opposed to each other is arranged such that the lower end portion of the upper rotating shaft 1 and the upper end portion of the lower rotating shaft 1 form a projection 7 having a horizontal cross section and a square having a horizontal cross section. Each of the upper rotating shafts 1 is independently rotated so as to be aligned with the hole 8 in the circumferential direction, thereby aligning. In this case, each rotary shaft 1 is directly suspended by the connecting member 13 connected to the upper end, and the connecting member 13 is suspended from the base material 11 via the suspension member 12 so as to rotate. The shaft 1 rotates smoothly at the rotating portion 12a portion of the suspension member 12, and each rotating shaft 1 is easily rotated independently to surround the projection 7 having a horizontal cross section into a square hole 8 having a horizontal cross section. Can be matched in direction. In this case, as shown in FIG. 7 and FIG. 8A, the rotation of the rotary shaft 1 can be more easily performed when the operator engages and rotates the rotation operation jig 30 on the projection 7 having a horizontal cross section. It is something that can be done.
[0015]
As described above, the lower end portion of the upper rotary shaft 1 and the upper end portion of the lower rotary shaft 1 are positioned so that the projection 7 having a horizontal cross section and the square hole 8 having a horizontal cross section have the same shape in the circumferential direction. After the alignment, the upper multiaxial rotating shaft group 3 is slightly lowered, and a pair of rotating shafts 1 facing each other in the vertical direction is fitted with a projection 7 having a horizontal cross section and a square hole 8 having a horizontal cross section. Then, the pin 22 is inserted into the pin insertion groove 21 from the pin insertion hole 20 and connected so as not to be removed vertically (see FIG. 9).
[0016]
After connecting the upper and lower multiaxial rotating shaft groups 3 as described above, the pins 22 are pulled out to connect the connecting members 13 of the suspension device 15 to the upper ends of the rotating shafts 1 of the upper multiaxial rotating shaft group 3. Remove from. Next, as shown in FIG. 10, the heavy machinery 4 is moved to the original position, and each output shaft 6 of the rotating device 5 provided on the heavy machinery 4 so as to be movable up and down is connected to each rotary shaft of the upper multiaxial rotary shaft group 3. The upper ends of 1 are connected by fitting the protrusions 7 each having a square horizontal section and the square holes 8 having a horizontal section square (see FIG. 11). Also in this case, the pin 22 is inserted so as not to be pulled up and down. In this case, the horizontal position of each of the output shafts 6 of the rotating device 5 in the horizontal direction of the projections 7 or the square holes 8 having a horizontal cross section is the horizontal cross section of the upper end portion of each rotating shaft 1 of the lower multi-axis rotating shaft group 3. Since it coincides with the circumferential position of the square-shaped square hole 8 or protrusion 7, the upper multi-axis rotating shaft group 3 connected to the respective rotating shafts 1 of the lower multi-axis rotating shaft group 3 The circumferential positions of the square holes 8 or projections 7 having a horizontal cross section of the upper end of each rotary shaft 1 are the circumferential directions of the projections 7 or square holes 8 having a horizontal cross section of each output shaft 6 of the rotating device 5. In this case, it is possible to easily connect without rotating operation for alignment in the circumferential direction. In this state, the rotating device 5 is driven to rotate the rotating shafts 1 connected to each other to excavate the ground 9 to perform the second stage excavation downward following the first stage excavation. A deep excavation hole 10 is formed as shown in FIG.
[0017]
In the above embodiment, an example in which the multi-axis rotating shaft group 3 is connected in two stages has been described, but three or more stages may be connected. That is, after the state of FIG. 12, the rotating device 5 is disconnected and the heavy machine 4 is moved to the side, and then the upper end of each rotating shaft 1 of the second stage multi-axis rotating shaft group 3 in the same manner as described above. The lower end of each rotating shaft 1 of the third stage multi-axis rotating shaft group 3 is connected, and then connected again to the rotating device 5 of the heavy machine 4 to perform deeper excavation. The same applies when the group 3 is connected in four or more stages.
[0018]
In the embodiment shown in the accompanying drawings, each output shaft 6 of the rotating device 5 has an auxiliary rotating shaft 6 'connected to the lower end portion. In this embodiment, the output shaft 6 is actually different from the lower end portion. This indicates the lower end of the auxiliary rotating shaft 6 ′ connected to the end of the output shaft 6, but the auxiliary rotating shaft 6 ′ may not be provided at the lower end of each output shaft 6.
[0019]
【The invention's effect】
In the invention according to claim 1 of the present invention, as described above, each connection member of the suspension device in which the plurality of connection members are independently suspended from the base material via the suspension member. A multi-axis rotary shaft group is connected via a suspension device by connecting a plurality of rotary shafts to the upper end of each of the rotary shaft groups in which a plurality of rotary shafts are rotatably supported by a connecting member and lifting the base material by a crane. The lower end of each rotary shaft of the multi-axis rotary shaft group lifted by this crane is opposed to the upper end of each rotary shaft of the multi-axis rotary shaft group remaining in the excavation hole, and Each of the opposing rotary shafts is such that the upper end of the lower rotary shaft and the lower end of the upper rotary shaft have a horizontal cross section of the projection and the square hole of the horizontal cross section in the circumferential direction. Rotate each rotation axis on the After alignment, the upper multi-axis rotating shaft group is slightly lowered and the respective rotating shafts facing each other in the vertical direction are connected to each other by fitting a projection having a horizontal cross section with a square hole having a horizontal cross section. When connecting the rotating shafts facing each other in the upper and lower directions of the multi-axis rotating shaft group, the rotating shafts of the multi-axis rotating shaft group suspended by a crane with a crane are rotated independently by the connecting members. As a result, the rotating shafts can be easily rotated independently with light force without the weight of each rotating shaft being applied to the connecting member. Can be connected with a projection having a horizontal cross section and a square hole having a horizontal cross section aligned in the circumferential direction. In this way, the multi-axis rotating shaft group can be easily connected in the vertical direction in a short time. Multi-axis rotation up and down In which a deep borehole depths by connecting group can be formed in a simple and short.
[Brief description of the drawings]
FIG. 1 is an exploded perspective view showing a suspension device used in the present invention and an upper end portion of each rotary shaft of a multi-axis rotary shaft group.
FIG. 2 is a partially cutaway front view of the same.
FIG. 3 is an explanatory diagram showing the order of the method of the present invention.
FIG. 4 is an explanatory diagram showing the order of the above method.
FIG. 5 is an explanatory diagram showing the order of the above method.
FIG. 6 is an explanatory diagram showing the order of the above method.
FIG. 7 is an explanatory diagram showing the order of the above method.
FIG. 8A is an explanatory diagram of a state where each rotary shaft of the upper multi-axis rotary shaft group is rotating, and FIG. 8B is an explanatory diagram of a state where each rotary shaft is rotated and aligned. (C) is a front view showing the positional relationship in the circumferential direction of the suspension member and the connecting member in a state where the rotating shaft is rotated and aligned.
FIG. 9 is an explanatory diagram showing the order of the above method.
FIG. 10 is an explanatory diagram showing the order of the above method.
FIG. 11 is an explanatory diagram showing the order of the above method.
FIG. 12 is an explanatory diagram showing the order of the above method.
FIG. 13 is an explanatory diagram of a state in which the upper multi-stage rotary shaft group is suspended by a crane in order to connect the upper multi-stage rotary shaft group to the lower multi-axis rotary shaft group in the related art.
FIG. 14 is an enlarged front view of a conventional main part.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Rotating shaft 2 Connecting member 3 Multi-axial rotating shaft group 4 Heavy machine 5 Rotating device 6 Output shaft 7 Protrusion 8 Square hole 9 Ground 10 Excavation hole 11 Base material 12 Suspension member 13 Connection member 14 Crane 15 Suspension device

Claims (1)

Projections with a horizontal cross section on each output shaft of a rotary device in which the upper end of each rotary shaft of a multi-axis rotary shaft group in which a plurality of rotary shafts are rotatably connected and supported by a connecting member is provided on a heavy machine. Are connected by fitting a square hole with a square section with a horizontal section, and in this state, the rotary shafts of the multi-axis rotary shaft group are rotated to excavate the ground, and the first stage of excavation by the multi-axis rotary shaft group is performed. After the operation, the multi-axis rotating shaft group is separated from the rotating device with the multi-axis rotating shaft group left in the excavation hole, and the plurality of connecting members can be rotated independently from each other through the suspension member. Each connecting member of the suspension device formed in a suspended manner is connected to the upper end of each rotating shaft of a multi-axis rotating shaft group in which a plurality of rotating shafts are rotatably connected and supported by a connecting member, and the substrate is lifted by a crane. The multi-axis rotating shaft group is lifted through the lifting device. The lower end portion of each rotating shaft of the multi-axis rotating shaft group lifted by this crane is opposed to the upper end portion of each rotating shaft of the multi-axis rotating shaft group remaining in the excavation hole, and the upper and lower portions are opposed to each other. The upper and lower ends of the pair of rotating shafts and the lower end of the upper rotating shaft are aligned so that the protrusions having a horizontal cross section and the square holes having a horizontal cross section are aligned in the circumferential direction. Each rotating shaft is rotated and aligned independently, and after the alignment, the upper multi-axis rotating shaft group is slightly lowered, and each pair of rotating shafts facing each other in the vertical direction has a projecting portion and a horizontal section that have a horizontal cross section. Connected by fitting with a square-shaped square hole, after which each connecting member of the suspension device is removed from the upper end of each rotating shaft of the upper multi-axis rotating shaft group, and then the rotation provided to the heavy equipment to be movable up and down The upper end of each rotating shaft of the upper multi-axis rotating shaft group is horizontally placed on each output shaft of the device. The first step is to excavate the ground by rotating the rotary shafts of the multi-axis rotary shaft group connected up and down by fitting the projections having a square face with the square holes having a horizontal section square shape. A method of excavating by connecting a multi-axis rotating shaft group , wherein the second stage excavation is performed downward following excavation.

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