JPH06294278A - Cutter device for use in vertical shaft excavator - Google Patents

Abstract

PURPOSE:To excavate a vertical shaft throughout its cross section using cutters and to easily correct rolling of an excavator that could be caused when it is driven for excavation. CONSTITUTION:A full-size tunneling machine 1 is supported to the wall 2 of a vertical shaft by means of a gripper 3 and a cutter is split into a center cutter 4 and an outer peripheral cutter 5, both of which are driven by a driving motor 6 and simultaneously rotated to excavate the vertical shaft throughout its cross section. Should the full-size tunneling machine 1 roll, an expansion jack 26 provided at the supporting spoke 25 of the center cutter 4 is expanded; then the outer peripheral cutter 5 is separated from the ground and rotated, so that the rolling is easily corrected.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shaft excavator, and more particularly to a cutter device for a full-section deep foundation excavator configured to be excavated by a cutter.

[0002]

2. Description of the Related Art This type of vertical shaft excavator has been developed to mechanize the conventional manual excavation work using bigs and breakers. For example, it is supported on a gantry installed outside the mine. A method of excavating the breaker by mechanically operating it, a method of excavating by mechanically operating a shovel, a breaker, a rotary cutter, etc. supported by a guide rail installed in the mine, a gripper or the like are known.

[0003]

The above-mentioned conventional type not only cannot excavate the entire cross section of the vertical shaft at the same time, but also when the excavator rolls due to the reaction force and vibration at the time of excavation by a breaker, etc. Was difficult to correct by the function of the excavator itself. Therefore, technical problems to be solved arise in order to simultaneously excavate the entire cross section of the vertical shaft and to easily correct the rolling of the excavator caused by the excavation work of the cutter. The present invention aims to solve the problems.

[0004]

DISCLOSURE OF THE INVENTION The present invention has been proposed in order to achieve the above object, and is a shaft excavating device which is fixed to a pit wall by a gripper and is constructed to dig by a cutter. In the shaft excavator, the cutter is divided into a central cutter and an outer peripheral cutter, and telescopic jacks are attached to support spokes of the central cutter so that the central cutter can be vertically extended and contracted. The present invention provides a cutting device for cutting.

[0005]

The cutter of the shaft excavator is divided into the central cutter and the peripheral cutter, and the central cutter and the peripheral cutter rotate simultaneously to excavate the entire cross section of the shaft. Then, since expansion and contraction jacks are attached to the support spokes of the central cutter to enable the central cutter to expand and contract with a small stroke up and down, the central cutter and the outer peripheral cutter simultaneously rotate the entire cross section of the vertical shaft. The outer cutter is separated from the ground by extending the telescopic jacks provided on the support spokes of the central cutter so that the rolling that occurs when excavating is performed. Therefore, the rolling of the excavator can be easily corrected by rotating the outer peripheral cutter away from the ground.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. Note that, for convenience of description, the entire related mechanism will be described. FIG. 1 is a vertical sectional view showing a vertical shaft excavation state. In the figure, 1 is a full-section excavator, which has a gripper 3 on a shaft wall 2 of a vertical shaft.
It is fixed by 3 ... And it is comprised so that a center cutter 4,4 ... and an outer peripheral cutter 5,5 ... may be carried out. The center cutters 4, 4 ... And the outer cutters 5, 5 ... Are driven by drive motors 6, 6 ... And are configured to rotate in opposite directions.

Further, since the scraps excavated by the central cutters 4, 4 ... And the outer peripheral cutters 5, 5 ... Are accumulated in the slip reservoir 7 behind the central cutters 4, 4 ,.
The lower end of the vacuum earth-discharging pipe 8 is exposed to the above, and the scrap is discharged to the ground by driving the vacuum earth-discharging machine 9 installed on the ground. Thus, the earth discharging is not limited to the vacuum method, but a reverse earth discharging method, a clam shell earth discharging method, or the like can be adopted.

Next, the full-section excavator 1 will be described in detail with reference to FIGS. 2 and 3. As described above, the full-section excavator 1 is
The grippers 3, 3 ... for fixing to the pit wall 2, the central cutters 4, 4, ..., The outer peripheral cutters 5, 5 ..., and the central cutters 4, 4, ... Drive motors 6, 6, etc., and
Each of these parts is attached to a frame composed of an outer cylinder 10 and an inner cylinder 11.

Thus, the outer cylinder 10 and the inner cylinder 11 are integrally formed with a constant interval T, and the inner cylinder 11 is formed lower than the outer cylinder 10. Should not be limited. The ring 13 is surrounded by an outer surface of the outer cylinder 10 with a slight clearance t.
Grippers 3, 3 ... Are attached to 3, respectively. Further, the grippers 3, 3 ... Fix the sliding outer cylinders 14, 14 ... On the ring 13, and the insides of the sliding outer cylinders 14, 14 ... are slidable by jacks 15, 15, respectively. It is configured. However, the slide outer cylinder 1
4, 14 are openings 10 provided in the outer cylinder 10.
The opening portions 10a, 10a, ...
The frame composed of the outer cylinder 10 and the inner cylinder 11 is vertically movable by the action of 6. Therefore, it suffices that the shift jacks 16 are opened to a length corresponding to one stroke.

Further, as shown in FIG. 4, the grippers 3, 3 ... May be provided in two upper and lower stages. In this case, the rings 13 are provided above and below, and the upper and lower rings 13 and 13 are
Are connected by rods 13b and 13b. The grippers 3, 3, ... Are attached to the upper and lower rings 13, 13, respectively. In that case, a vertical posture correction function is added to the full-section excavator 1. That is, the inclination and the amount of centering of the full-section excavator 1 can be corrected to the correct posture by adjusting the strokes of the upper and lower two-stage grippers 3, 3.

Further, slide keys 17, 17 ... Having a vertical length corresponding to one stroke of the shift jacks 16, 16 ... Are projectingly provided at several positions on the outer surface of the outer cylinder 10, and A slide groove 13a, which is notched so that the slide keys 17, 17 ...
13a ... Are provided in the vertical direction on the inner side surface of the ring 13, and the slide keys 17, 17 ...
3a, 13a ...

Further, the upper ends of the shift jacks 16, 16 ... Are attached to the lower surface of the ring 13, and the piston rods 16a of the shift jacks 16, 16 ...
The lower ends of 16a are pivotally supported by a flange portion 18 projecting outward from the lower end of the outer cylinder 10. Thus, the frame composed of the outer cylinder 10 and the inner cylinder 11 has a structure in which the ring 13 is fixed to the shaft wall 2 of the vertical shaft by the grippers 3, 3 ,. By driving, the piston rods 16a, 16a ... Can be moved up and down by an amount equivalent to one stroke.

Drive motors 6, 6, ... Are attached to the upper portion between the outer cylinder 10 and the inner cylinder 11, and
The drive motors 6, 6 ... Each have a pinion gear 19,
19 ... are pivoted. On the other hand, the pinion gear 1
On the same plane as 9, 19, ..., Outer peripheral side slewing bearings 20 are respectively interposed between the outer cylinder 10 and the pinion gears 19, 19 ,.
The internal gear 20b integrated with a is provided, and the internal gear 20b
b is meshed with the pinion gears 19, 19 ... Therefore, the inner ring 2 of the outer slewing bearing 20
0a is integrally provided with a frame 21 of outer peripheral cutters 5, 5, ..., The lower end surface of the frame 21 is made to coincide with the lower end surface of the outer cylinder 10, and the lower frames 5a, 5a are attached to the lower end surface of the frame 21. ... is further installed, and the lower frame 5a,
The lower part of 5a ... is projected outward, and the cutter blades 5b, 5b ... Are attached to the lower surfaces of the lower frames 5a, 5a. Further, the outer peripheral cutters 5, 5, ... Are configured so that the outer diameters thereof can be expanded / contracted by the expansion / contraction jacks 22, 22, .. However, it is not limited thereto.

When the outer peripheral cutters 5, 5, ... Are formed to be expandable and contractible, the elastic jacks 2 are attached to the bases of the lower frames 5a, 5a.
2, 22 ... Piston rods 22a, 22a ... are pivotally supported, and further tip frames 5c, 5c ... Are fixed to the other ends of the telescopic jacks 22, 22 ,. By attaching the cutter blades 5b, 5b ... to the lower surface of the ..., the tip frames 5c, 5c ... Expand and contract by the drive of the telescopic jacks 22, 22 ,. It is possible to expand and contract the diameter.

Next, on the same surface as the pinion gears 19, 19, ..., The inner cylinder 11 and the pinion gear 1 are arranged.
.. are provided between the inner peripheral side slewing bearing 23 and the outer ring 23a of the inner peripheral side slewing bearing 23, respectively.
And an external gear 23b integrated with the external gear 23b.
Are meshed with the pinion gears 19, 19 ...
Therefore, the outer ring 23a of the inner peripheral side slewing bearing 23
A frame 24 for mounting the central cutters 4, 4 ... Is integrally provided with the lower end surface of the frame 24 so that the lower end surface of the frame 24 coincides with the lower end surface of the inner cylinder 11. Support spokes 2 for central cutters 4, 4 ...
5,25 ... are laid down, and the supporting spokes 25, 2
The central cutters 4, 4 ... Having the cutter blades 4a, 4a.

Thus, the cutter portion is the central cutter 4,
4 ... and peripheral cutters 5, 5 ...
The rotation of the respective pinion gears 19, 19 ... Axed to the shafts of the drive motors 6, 6 ...
... and the outer peripheral cutters 5, 5 ... are given rotations in mutually opposite directions, so that the central cutters 4, 4, ... And the outer peripheral cutters 5, 5 ,. The generated excavating torque reaction force is the central cutter 4, 4 ...
And the peripheral cutters 5, 5 ... Are offset by each other, so that the vibration of the full-section excavator 1 is also reduced, and it is possible to prevent the occurrence of troubles in each part. Further, the central cutters 4, 4 ... And the outer peripheral cutters 5, 5 ... Face the pinion gears 19, 19 ...
In addition, since the external gear 23b is meshed with each other to form a rotary drive unit, the reverse rotation of the cutters can be easily obtained, and the drive motor 6 can be provided in one line. Therefore, the drive unit can be configured compactly.

Thus, the central cutters 4, 4, ... Are protruded downward from the outer peripheral cutters 5, 5, .. Thus, the central cutters 4, 4 ... Are caused to excavate prior to the outer peripheral cutters 5, 5 ,.
Then, for example, the above-mentioned vacuum drain pipe 8 is provided in the scrap collecting portion 7.
Since it can be discharged to the outside of the mine by facing the lower end of the, the soil scavenging property becomes good.

Further, as shown in FIG. 5, telescopic jacks 26, 26 ... Are mounted in the support spokes 25, 25 of the central cutters 4, 4 ,.
The lower ends of the respective piston rods 26a, 26a of 6, 26, ... Are pivotally supported by the central cutters 4, 4, ..., and the central cutters 4, 4 ,.
Thus, when the central cutters 4, 4 ... Are extended, the outer peripheral cutters 5, 5 ... Are pulled up above the excavation surface, so that the full-section excavator is rotated by rotating the outer peripheral cutters 5, 5. The rolling correction of 1 can be easily performed.

That is, when the telescopic jacks 26, 26 ... Are extended, the outer peripheral cutters 5, 5, ... Are pulled up on the ground by the reaction force, so that the outer peripheral cutters 5, 5 ... Are separated from the ground. If you rotate 5, ...
The rolling of the grippers 3 and 3 will be corrected.
Next, the operating state of the full-section excavator 1 will be described. First, the grippers 3, 3 ... Are fixed to the shaft wall 2 of the vertical shaft, and the pinion gears 19,
19 to 19 through the internal gear 20b and the external gear 23b to the central cutters 4, 4 ...
With the driving force of ..., The shift jacks 16, 16 ... That is, the central cutters 4, 4
... and the outer peripheral cutters 5, 5 ... To continuously excavate the entire cross section of the vertical shaft to excavate the shift jacks 16, 16
Dig only for one stroke. After that, the jacks 15, 15 of the grippers 3, 3 ... Are contracted to release the fixed state from the mine wall 2, and the extending shift jacks 16, 16 ... are further contracted, and then the grippers 3, 3 ... The shaft is fixed at 2, and the vertical shaft having a predetermined depth is excavated by reversing the excavation work.

In the figure, reference numeral 27 is a seal and 28 is a liner plate. Further, the same operational effect can be expected not only when the cutter is divided into two but also when it is divided into three or more. The present invention can be modified in various ways without departing from the spirit of the present invention, and it goes without saying that the present invention extends to the modified version.

[0021]

As described in detail in the above embodiment, the present invention is as follows.
The cutter is divided into a central cutter and a peripheral cutter, and the entire cross section of the shaft is excavated by simultaneous rotation of both cutters. At this time, when the excavation drive is being performed by the cutter, the gripper may roll on the pit wall. Therefore, in order to correct the rolling, first, the telescopic jack attached to the supporting spokes of the central cutter is extended. In that case, the outer peripheral cutter is pulled up above the ground. Therefore, by loosening the fixed state of the gripper in a state where the outer peripheral cutter is separated from the ground and rotating the outer peripheral cutter, the rolling of the full-section excavator can be easily corrected. Then, if the gripper is extended again and fixed to the hole wall, the full-section excavation can be smoothly performed in the correct posture.

[Brief description of drawings]

FIG. 1 is an explanatory vertical sectional view showing a vertical shaft excavation state by a full-section excavator.

FIG. 2 is a vertical sectional view of a full-section excavator.

FIG. 3 is a bottom view crossing the same portion.

FIG. 4 is a vertical cross-sectional view of another embodiment when the grippers are provided in two stages.

FIG. 5 is a partially longitudinal front view of another embodiment when a central cutter is provided with a jackie.

[Explanation of symbols]

 1 Full section excavator 2 Well wall 3 Gripper 4 Center cutter 5 Outer cutter 6 Drive motor 19 Pinion gear 20b Inner gear 23b Outer gear 25 Center cutter support spoke 26 Telescopic jack 26a Piston rod

 ─────────────────────────────────────────────────── ─── Continuation of front page (71) Applicant 000207780 Taiho Construction Co., Ltd. 1-24-4 Shinkawa, Chuo-ku, Tokyo (71) Applicant 391035795 Shiroishi Co., Ltd. 2-4-1 Marunouchi, Chiyoda-ku, Tokyo (72) ) Inventor Akihide Nosue 1 Higashishinmachi, Higashi-ku, Nagoya, Aichi Chubu Electric Power Co., Ltd. (72) Inventor Nobuo Oda 2-3-24 Yokota, Atsuta-ku, Nagoya, Aichi Chuo Electric Power Co., Inc. (72) Inventor Hironobu Nagase 1-1-5 Nishihioki, Nakagawa-ku, Nagoya, Aichi Prefecture Kumagaya-gumi Co., Ltd. Nagoya Branch in the factory

Claims (1)

[Claims] 1. Fixed to a mine wall by a gripper, and
In a vertical shaft excavator configured to be excavated by a cutter, the cutter is divided into a central cutter and an outer peripheral cutter, and a telescopic jack is attached to support spokes of the central cutter so that the central cutter can be expanded and contracted vertically. A cutter device for a vertical shaft excavator, which is characterized in that