JP2678132B2 - Support tool for excavating tools in blade edge propulsion method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a support tool for an excavating tool used when excavating a natural ground, and particularly to a pipe having a diameter substantially equal to that of the horizontal shaft in a horizontal shaft excavated manually. The present invention relates to a support tool for an excavating tool in a blade propulsion method in which a pipe is inserted and buried in the ground.

[0002]

2. Description of the Related Art The blade edge propulsion method is a type of underground piping method, in which the excavation tool is used to excavate a horizontal shaft manually, and the diameter of the horizontal shaft is almost the same as that of the horizontal shaft. The pipe with a blade installed is inserted to embed the pipe in the ground.

An example of the blade edge propulsion method will be described with reference to FIG. Reference numeral 1 is a vertical shaft, the lower end of which is reinforced by foundation stones 2 and foundation concrete 3 and the like, and a jack 5 which is laterally operated by hydraulic pressure or the like is installed on a propelling table 4 provided above the shaft. . On the other hand, on the side surface of the vertical shaft 1 facing the operating direction of the jack 5, a horizontal shaft 7 extending laterally from the vertical shaft 1 and surrounded by a pipe (fume pipe or steel pipe) 6 is formed.

When the shaft diameter of the shaft 7 is small or the excavation distance is short, the shaft 7 is propelled by manual excavation. Specifically, the worker 8 makes an air pick 9 at the tip of the horizontal shaft 7.
Sideways and excavate the ground by the vibration of the air pick 9. At the same time, the pipe 6 having an annular blade 10 at the tip is pushed into the side pit 7 by using the jack 5, Is promoted. A new pipe 6 is provided behind the pipe 6 pushed into the side pit 7 depending on the length of the side pit 7.
And the binding metal 12, and the jack 5 sequentially pushes into the shaft 7.

The earth and sand produced by excavating the horizontal shaft 7 are loaded into the trowel bucket 13 and carried out into the vertical shaft 1, and further carried to the ground by the crane 14 installed on the ground. The crane 14 can be moved horizontally on the vertical shaft 1 by a rail 15 and is used not only for carrying out earth and sand but also for carrying out the pipe 6 into the vertical shaft 1.

[0006]

By the way, in the case of manual excavation in the above-mentioned conventional blade tip propulsion method, the worker 8 carries out the excavation while holding the air pick 9 sideways, but the weight of the air pick 9 is about the same. Since the weight is as heavy as about 10 kg, there is a problem that the physical load on the worker 8 is large due to this weight, vibration during excavation, and reaction force received from the air pick 9 during excavation. In particular, when hitting boulders or bedrock during excavation, a large pressing force is required against these boulders or bedrock, so that the above load is further increased, which is a cause of lowering the excavation efficiency.

The diameter of the horizontal shaft 7 is small (minimum 800 mm).
In many cases, the worker 8 is forced to perform excavation work in an unstable posture in a narrow mine, which is also a cause of increasing the physical load on the worker 8. The present invention has been made in view of the above circumstances, and its object is to reduce the physical load on the worker 8 in the blade edge propulsion method and to improve the excavation efficiency accordingly.

[0008]

SUMMARY OF THE INVENTION According to the present invention, a horizontal shaft is manually excavated by using a drilling tool, and a pipe having the same diameter as that of the horizontal shaft and a cutting edge attached to the tip is installed in the horizontal shaft. A support tool for an excavating tool in a blade mouth propulsion method for inserting and burying a tube in the ground (hereinafter, abbreviated as a support tool), which is an upper end of an inner surface of a tube on which the blade mouth is mounted. A base installed along the axis of the pipe, a movable member mounted on the base so as to be movable along the axis, and the excavation tool movable up and down and left and right from the movable member. It is characterized in that a suspension means for swingably suspending is provided on the.

Here, it is also possible to install a pedestal along the axis of the tube at the lower end of the inner surface of the tube to which the blade is attached, and to install a chair movable along the axis on the pedestal. . Further, the chair may be movable along the axis by human power during excavation.

[0010]

In the present invention, since the excavating tool is suspended by the suspending means so as to be movable up and down and swingable vertically and horizontally, the weight of the excavating tool is supported by the suspending means. Further, when a pedestal is installed below the excavating tool along the axis of the pipe and a chair movable along the axis is provided on the pedestal, the worker excavates while sitting on this chair. You can do the work.

Further, when the chair is movable along the axis by human power during excavation, the reaction force received by the worker during excavation is absorbed by the movement of the chair along the axis.

[0012]

Embodiments of the present invention will be described below in more detail with reference to the drawings. In addition, about the part which has the same structure as the said conventional blade tip propulsion construction method, the same code | symbol is attached | subjected and the description is abbreviate | omitted.

1 and 2 show a first embodiment of the present invention. FIG. 1 is a longitudinal sectional view of a shaft 7 to which a supporting member according to the present invention is attached, and FIG. 2 is a lateral view shown in FIG. It is the front view seen from the front end side of the pit 7 (arrow I direction in FIG. 1). A pair of left and right rails (bases) 20 are installed along the axis of the pipe 6 at the upper end of the inner surface on the tip side of the pipe 6, which is located at the tip of the horizontal shaft 7 in the propulsion direction. On the tip end side and the base end side of the rail 20, support bases 21 and 22 each having a plate shape are inserted into the pipes with their side surfaces sandwiched by the rails 20 from the lower left and right sides and the end surfaces facing up and down. It is movably fixed along the axis of 6.

On the lower end surface of the support base (movable member) indicated by reference numeral 21, there is installed a pulley 23 which rotates about an axis extending in the horizontal direction perpendicular to the axis of the pipe 6, and the support base indicated by reference numeral 22. Is a coil balancer, and is provided with a coil balancer (winding means) 24 that rotates around an axis extending in the horizontal direction perpendicular to the axis of the tube 6. The coil balancer 24 winds a wound wire or the like with a constant tension. In this embodiment, the coil balancer 24 has a winding tension of 11.5 kgf.

A wire 25 is wound around the coil balancer 24 so as to be wound in the direction of the base end of the pipe 6, and further,
The wire 25 extends along the rail 20 toward the tip of the tube 6, and the tip of the wire 25 hangs downward at the tip of the tube 6 via a pulley 23. And, at the tip of the wire 25,
The air pick 9 is suspended horizontally via a cam buckle 26.

Here, the weight of the air pick 9 is about 10 kg.
Therefore, the tension of the coil balancer 24 and the weight of the air pick 9 are almost balanced through the wire 25, and as a result, the air pick 9 remains in its suspended position,
It is held at the tip of the tube 6. In the case of this embodiment, the wire 25 has a diameter of 1.5 mm.

On the other hand, a pair of left and right rails (pedestals) 30 are installed along the axis of the pipe 6 at the lower end of the inner surface of the pipe 6 located at the extreme end of the horizontal shaft 7 in the propulsion direction. A support base 31 in the form of a plate is attached to the rail 30 so that the side surface of the support base 31 is sandwiched between the rails 30 from above and to the left and the end surface is oriented vertically, and the support base 31 is movable and fixed along the axis of the pipe 6. It is supported.

Further, a plate-shaped chair 32 is placed on the support base 31 with its end faces facing up and down, and the base end side of the chair 32 is indicated by a symbol R in FIG. A tiltable backrest 34 is provided on the tip side with a shaft 33 provided at the lower end as an axis.

Next, excavation of the horizontal shaft 7 using the support tool having the above-mentioned structure will be described below. The worker 8 sits on the chair 32 and shifts the position of the support base 31 back and forth to position the chair 32 so that the air pick 9 is at the position where it can be operated most easily. Then, the length of the wire 25 that suspends the air pick 9 is adjusted to set the height of the air pick 9.

In this case, as described above, between the tension of the coil balancer 24 and the weight of the air pick 9, the wire 2
Since almost equilibrium has occurred through 5, air pick 9
Is pulled downward, the wire 25 wound around the coil balancer 24 is paid out, and the height of the air pick 9 is lowered. When the air pick 9 is lifted upward, the wire 25
Is wound around the coil balancer 24, and the height of the air pick 9 increases. When the air pick 9 is released, the air pick 9 stops at the released position. On the other hand, the movement of the air pick 9 in the front-rear direction is easily performed by moving the plate-shaped base indicated by reference numeral 21 back and forth along the rail 20.

After the positions of the chair 32 and the air pick 9 are determined, the worker 8 holds the air pick 9 in the posture shown in FIG. 1 and supplies the air with the tip of the air pick 9 pressed against the excavation site. The air pick 9 is vibrated to excavate. In this case, since the support tool is provided on the tip end side of the pipe 6 located at the tip of the horizontal shaft 7 in the propulsion direction, the support tool is sequentially moved to the horizontal shaft 7 as the jack 5 moves to the front end side. Is moved to the tip side of.

In this embodiment, since the air pick 9 is suspended by the wire 25, most of the weight of the air pick 9 is supported by the wire 25, and as a result, the worker 8 is supported during the excavation work. The weight of the air pick 9 should be about 1 kg. Therefore, the physical load on the worker 8 is reduced. Furthermore, since the air pick 9 can be moved up and down, forward and backward, and can be swung up and down, left and right, it is easy to change the excavation direction and to swing the air pick 9.

Further, since the worker 8 performs the excavation work while sitting on the chair 32, the excavation work can be performed in a comfortable posture at all times, and since the chair 32 is provided with the backrest 34, the excavation work is performed. Accordingly, the reaction force received by the worker 8 can be received by the backrest 34. Therefore, the worker 8
The physical load of is further reduced. Moreover, since the support base 31 that supports the chair 32 is movable along the axis of the pipe 6, when the worker 8 receives a reaction force due to excavation,
The support base 31 moves toward the base end side of the pipe 6 to absorb this reaction force, and as a result, the physical load on the worker 8 is further reduced.

As described above, by using the support tool of this embodiment, the physical load on the worker 8 during excavation work is reduced. Therefore, even if the rocks hit rocks, rocks, or the like during excavation, the excavation work can be continued without further increasing the load, and excavation efficiency is improved.

Further, since the chair 32 is compactly gathered at the lower end portion of the pipe 6 by tilting the backrest 34, the presence of the chair 32 even when the earth and sand generated by excavation is loaded on a toro bucket or the like and carried out. Does not hinder the delivery work. Further, the air pick 9 is designated by a symbol a in FIG.
It is also possible to hold the air pick 9 in the horizontal shaft 7 so as not to disturb the carrying-out work or the like by suspending the air pick 9 at the upper end of the horizontal shaft 7 as shown in FIG.

3 and 4 show a second embodiment of the present invention. In this case, the rail 20 has a movable member 40.
Is fixed so as to be movable along the axis of the pipe 6, while an annular frame member 41 is mounted around a part of the air pick 9. Further, a belt 42 is hung between the lower surface of the movable member 40 and the frame member 41 as suspension means, and as a result, the air pick 9 is horizontally suspended in the horizontal shaft 7 by the belt 42. In the case of the present embodiment, the height of the air pick 9 is adjusted by adjusting the length of the belt 42 using the length adjusting mechanism 43 provided on the belt 42.

5 and 6 show a third embodiment of the present invention. In this case, the coil balancer 24 is directly hung from the lower surface of the movable member 40, and the air pick 9 is horizontally attached to the tip of the wire (suspension means) 25 wound around the coil balancer 24 via the buckle 44. Suspended. The height of the air pick 9 is adjusted by moving the air pick 9 upward or downward to suspend the air pick 9 as in the first embodiment.
By adjusting the length of the.

7 and 8 show a fourth embodiment of the present invention. In this case, a base 50 is installed along the axis of the pipe 6 at the upper end of the inner surface on the tip side of the pipe 6 which is located at the tip of the horizontal shaft 7 in the propulsion direction, and below the base 50,
A pair of left and right pipes 51 extending along the axis of the pipe 6 are attached. Furthermore, this pipe 51 is
A support base (movable member) 52 that engages with is fixed so as to be movable along the pipe 51.

The support base 52 has a shaft portion 53 which is rotatable about an axis which is perpendicular to the axis of the pipe 6 and extends vertically.
A vertically extending arm 54 is provided below the shaft portion 53a so as to be swingable back and forth about a shaft 53b extending vertically and horizontally to the axis of the pipe 6. A hole 55 is formed in the arm 54 along the longitudinal direction thereof, and the rotary shaft 56 inserted into the hole 55 causes
The air pick 9 is movably supported along the longitudinal direction of the hole 55.

Reference numeral 57 indicates that the support base 52 is connected to the pipe 6.
The lever 58 for moving along the axis of
4 is a lever for rotating the shaft 4 around the shaft portion 53a. Further, reference numeral 59 is attached to the proximal end of the arm 54,
A pair of coil balancers that balance the front and rear of the air pick 9.

In the case of this embodiment, the height of the air pick 9 is adjusted in the same manner as in the first embodiment. Further, the vertical or horizontal swing of the air pick 9 is performed by swinging the air pick 9 up and down around the rotation shaft 56 or by rotating the arm 54 left and right around the shaft portion 53a. Done.

Further, the movement of the air pick 9 in the front-rear direction is carried out by moving the support base 52 along the axis of the pipe 6, and when the air pick 9 is swung forward, the arm 54 is moved. For example, it may be swung about 53b as indicated by reference numeral b in FIG. Furthermore, when the presence of the air pick 9 interferes with the work, the arm 5
The air pick 9 can be stored in the upper part of the side pit 7 by raising 4 around the shaft 53b as shown by reference numeral c in FIG.

In the second to fourth embodiments, a chair 32 movable in the front-rear direction can be installed at the lower end of the inner surface of the pipe 6 as in the first embodiment. As a result, also in the second to fourth embodiments, the same effect as the first embodiment can be obtained. In addition, when the mine shaft 7 has a large mine diameter and the worker 8 needs to stand and perform excavation work, the chair 32 does not necessarily have to be installed.

[0034]

As described above, by using the supporting tool of the present invention, the physical load on the worker in the blade propulsion method is reduced, and the excavation efficiency is improved accordingly. You can

[Brief description of the drawings]

FIG. 1 is a partial cross-sectional view taken along line I-I of a shaft showing a first embodiment of a support according to the present invention.

FIG. 2 is a front view showing a first embodiment of a support according to the present invention as seen from a direction II of a side pit.

FIG. 3 is a partial cross-sectional view taken along the line III-III of the horizontal shaft showing the second embodiment of the support according to the present invention.

FIG. 4 is a front view showing a second embodiment of the support according to the present invention as seen from the IV direction of a side pit.

FIG. 5 is a partial cross-sectional view taken along the line VV of a horizontal shaft showing a third embodiment of the support according to the present invention.

FIG. 6 is a front view showing a third embodiment of the support according to the present invention as seen from the VI direction of a side pit.

FIG. 7 is a partial sectional view taken along the line VII-VII of a horizontal shaft showing a fourth embodiment of the support according to the present invention.

FIG. 8 is a front view of a side pit showing a fourth embodiment of the support according to the present invention as seen from the direction VIII.

FIG. 9 is a diagram showing a construction example of a blade propulsion method.

[Explanation of symbols]

 1 Shaft 2 Foundation Kuriishi 3 Foundation concrete 4 Propulsion stand 5 Jack 6 Pipe 7 Side pit 8 Worker 9 Air pick 10 Cutting edge 11 Color 12 Binding material 13 Trobucket 14 Crane 15 Rail 20 Rail (base) 21,52 Support base (Movable member) 22,31,40 Support base 23 Pulley 24 Coil balancer (winding means) 25 Wire (suspension means) 26 Cam type buckle 30 Rail (base) 32 Chair 33,53a Shaft part 34 Backrest 41 Frame member 42 Belt (Suspending means) 43 Length adjusting mechanism 44 Buckle 50 Base 51 Pipe 53b Shaft 54 Arm 55 Hole 56 Rotating shaft 57,58 Lever 59 Coil balancer

Claims (7)

(57) [Claims] 1. A pipe to the underground by excavating a horizontal shaft manually by using a drilling tool, and inserting a pipe having a diameter substantially the same as that of the horizontal shaft and a tip end attached to the horizontal shaft into the horizontal shaft. A support tool for an excavating tool in a blade propulsion method for burying a base, which is installed along the axis of the pipe at the upper end of the inner surface on the tip side of the pipe on which the blade is mounted, and this base. A movable member mounted on the table so as to be movable along the axis; and a suspension means for suspending the excavation tool vertically and horizontally and vertically from the movable member. Support tool for excavating tools in the blade edge propulsion method. 2. A pulley, which rotates along the axis, is suspended at a lower end of the movable member, and the suspension means is hung between the excavating tool and a base end portion of the base via the pulley. It is a passed wire, and at the base end portion of the base, winding means for winding the wire in the base end direction with a tension balanced with the weight of the excavating tool is installed. A support tool for an excavating tool in the blade edge propulsion method according to claim 1. 3. The support for an excavating tool in a blade edge propulsion method according to claim 1, wherein the suspension means has a belt stretchably stretched between the excavating tool and the movable member. Ingredient 4. The suspension means includes a wire having one end to which the excavation tool is attached, and a winding means which is suspended at a lower end of the movable member and winds the wire with a tension balanced with the weight of the excavation tool. A support tool for an excavating tool in a blade edge propulsion method according to claim 1, characterized in that: 5. The cutting edge propulsion method according to claim 1, wherein the suspension means has an arm that connects the excavating tool and the movable member so as to be swingable about the movable member as a fulcrum. Support tool for drilling tools. 6. A pedestal installed along the axis of the tube at the lower end of the inner surface of the tube with the blade installed, and a chair movably mounted on the pedestal along the axis. A support tool for an excavating tool in the blade propulsion method according to claim 1, 2, 3, 4, or 5. 7. The support tool for an excavating tool in a blade edge propulsion method according to claim 6, wherein the chair is movable along the axis by human power during excavation.