JP3291697B2 - Drive of rotary feeder in shield machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for driving a rotary feeder in a shield machine.
In particular, the present invention relates to a rotary feeder driving device in a shield machine that shares a screw conveyor and its driving mechanism.

[0002]

2. Description of the Related Art In the case of a conventional earth pressure shield excavator, excavated soil is usually once released into the atmosphere in a mine, so that eruption of sediment generated when the water pressure in the soil becomes high. It is important to prevent it. In particular, when the pore water pressure is high in a sand or gravel layer with little fine particles, it is necessary to prevent eruption at the rear end of the screw conveyor. Generally, a gate is provided at the discharge port of the screw conveyor to cope with the opening and closing of the gate, and a rotary feeder is provided for common use.

For example, FIG. 9 is a schematic cross-sectional view of a conventional shield excavator 1. The shield excavator 1 includes a shield machine main body 2, a cutter head 3, a cutter driving motor 4, and a bulkhead ( A partition wall 5, a screw conveyor 6, and a rotary feeder 7, and the cutter head 3 faces the face S. The cutter head 3 is rotationally driven by the cutter driving motor 4 to cut the face S, and sediment is taken in and temporarily stored in the cutter chamber 8 between the cutter head 3 and the bulk head 5. And the rotary feeder 7 discharges this outside the machine.

FIG. 10 is a sectional view of a main part showing a portion of a screw conveyor 6 and a rotary feeder 7, and FIG.
Is a side view of the rotary feeder 7 side,
The screw conveyor 6 has a cylindrical conveyor casing 9, a screw 10 in the conveyor casing 9, and a drive motor 11 for driving the screw 10 to rotate.

The rotary feeder 7 is connected to the downstream side of the screw conveyor 6 (discharge port 12 of the conveyor casing 9; FIG. 10). The rotary feeder 7 rotates the feeder casing 13 and the feeder casing 13. It has a drive motor 14 and a gate 15.

A plurality of bucket chambers 16 are formed in the feeder casing 13 at equal angular intervals in the rotation direction, and an inclined guide plate 17 is arranged at the center so as to face the discharge port 12. Is applied to the inclined guide plate 17 and guided to the bucket chamber 16 on the lower side in the figure,
It is temporarily separated from the upstream side of the discharge port 12 to be discharged from the bucket chamber 16 reaching the upper side in the drawing to the discharge port 18 of the gate 15 after half a rotation, so that the ejection can be prevented. I have. As shown in FIG. 9, the rotary feeder 7 is covered with a protective wire mesh 19.

[0007] In the rotary feeder 7 having such a configuration, the entire length of the screw conveyor 6 and the rotary feeder 7 becomes longer. Particularly, in the small-diameter shield excavator 1, the rotary feeder 7 is provided with the shield machine main body 2.
Occupies a large portion of the cross-section, causing a problem such as a decrease in the work efficiency, such as the loading of the tunnel configuration segment T (FIG. 9) and the like. Working in a narrow space also poses a problem in terms of safety measures.

[0008]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and has as its object to provide a driving apparatus for a rotary feeder in a shield machine capable of achieving a compact apparatus. I do.

Another object of the present invention is to provide a drive device for a rotary feeder in a shield machine which can be used particularly for preventing ejection in a small-diameter shield machine.

Another object of the present invention is to provide a drive device for a rotary feeder in a shield machine capable of reducing costs by saving labor of the device.

Another object of the present invention is to provide a drive device for a rotary feeder in a shield excavator which can secure a wider working space inside a shield machine main body or a tunnel, and is also effective in improving efficiency of underground work and safety measures. As an issue.

Further, the present invention can cope with a case where a rotary feeder becomes unnecessary due to a change in soil quality during shield excavation by removing and adding a minimum number of parts, and can be used only as a normal screw conveyor. It is an object to provide a drive device for a rotary feeder in a shield excavator that can be used.

[0013]

That is, the present invention focuses on sharing a drive mechanism for a screw conveyor and a drive mechanism for a rotary feeder with a single drive mechanism. In a shield excavator having a screw conveyor to be conveyed, and a rotary feeder that discharges the earth and sand that has been conveyed while being connected to the screw conveyor and is temporarily isolated from the screw conveyor, the rotary feeder includes: A rotary feeder driving device in a shield excavator configured to divide and house the earth and sand conveyed by the screw conveyor into a bucket chamber having a predetermined capacity and discharge the earth and sand by rotating the bucket chamber. To the above rotary feeder Provided with a Ta, the bucket chamber formed in this rotor, the rotor is a driving apparatus of a rotary feeder in the shield machine is characterized in that a rotationally drivable by the conveyor drive mechanism of the screw conveyor.

The conveyor drive mechanism includes a drive motor, a gear mechanism connected to the drive motor, and a sleeve connected to the gear mechanism to transmit a driving force to a screw of the screw conveyor. Can be connected to the sleeve so that the sleeve can be integrally rotated.

At the center of the rotor, a tube capable of guiding the earth and sand from the screw conveyor to the bucket chamber is arranged, and at the outer periphery of the rotor, the bucket chamber is disposed together with the tube and the rotor. A feeder casing to be formed can be arranged.

The rotor, the tube, and the feeder casing can be detachably attached to the screw conveyor.

In the driving apparatus for the rotary feeder in the shield excavator according to the present invention, since the rotary feeder is driven by the conveyor driving mechanism of the screw conveyor, the overall length and width can be made compact, and the shield excavator having a small diameter can be obtained. It is also applicable to machines. Therefore, a wider work space can be secured for the conventional rotary feeder, and workability and safety can be improved.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, a drive device for a rotary feeder in a shield machine according to an embodiment of the present invention will be described with reference to FIGS. However, the same parts as those in FIGS. 9 to 11 are denoted by the same reference numerals, and the detailed description thereof will be omitted. FIG. 1 is a schematic cross-sectional view of a shield machine 1 equipped with a drive device for the rotary feeder. The shield machine 1 includes a shield machine main body 2, a cutter head 3, a cutter driving motor 4, and a bulkhead 5. Together with the screw conveyor 20
And a rotary feeder 21.

FIG. 2 is a sectional view of a main part showing a screw conveyor 20 and a rotary feeder 21. The screw conveyor 20 is composed of the conveyor casing 9, the screw 10, and the drive motor 11.
And a conveyor drive mechanism 22 including The conveyor drive mechanism 22 includes the drive motor 11, a gear mechanism 23 connected to the drive motor 11, and a sleeve 24 connected to the gear mechanism 23 and transmitting a driving force to the screw 10 of the screw conveyor 20.

The gear mechanism 23 has a pinion gear 26 and a gear 27 provided in a gear case 25 and engaged with each other. The pinion gear 26 is connected to the output shaft of the drive motor 11, and the gear 27 is fixed to the sleeve 24 and the bearing 29 by bolts 28. The bearing 29 is fixed to the gear case 25 by bolts 30.

The outer periphery of the screw 10 is welded and fixed to the inner peripheral wall surface of the sleeve 24, the upstream side in the earth and sand transport direction is provided by the first seal 31 of the gear case 25, and the downstream side is provided in the gear case 25. Each of them is sealed by 25 second seals 32. The downstream opening 33 of the sleeve 24 corresponds to the discharging port 12 (FIG. 10) of the conveyor casing 9.

The rotary feeder 21 includes a feeder casing 34, a rotor 35, a tube 36,
Having. 3 is a side view as viewed from the downstream side of the rotary feeder 21, FIG. 4 is a cross-sectional view along the axial direction of the feeder casing 34, FIG. 5 is a cross-sectional view along the axial direction of the tube 36, and FIG. FIG. 7 is a cross-sectional view taken along a direction perpendicular to the axial direction of the rotor 35.

The feeder casing 34 is detachably attached to a side surface of the gear case 25 by bolts 37, and incorporates a rotor 35 and a tube 36 therein, and a gate 38 is provided at a portion of the tube 36 protruding downstream. Are fixed by bolts 39.

The rotor 35 is provided for the feeder casing 3.
4 so as to be rotatably housed in close contact with the inside of the sleeve 4, and face the downstream opening 33 of the sleeve 24 so as to face the bolt 4.
By 0, this is detachably fixed. A seal 41 is interposed in the center of the rotor 35 and a storage space 42 at the center thereof is provided.
The tube 36 is fitted in (FIG. 7). In particular, as shown in FIG. 7, the rotor 35 is provided with partition walls 43 in the circumferential direction around the accommodation space 42, so that each of the partition walls 43, the feeder casing 34, and the tube 36 are provided. The bucket chambers 44 can be formed at equal angular intervals.

The tube 36 has an inclined guide wall 45 obliquely across the center thereof, and forms a receiving port 46 facing the downstream opening 33 of the sleeve 24 and a discharge port 47 reaching the gate 38 side. is there. The tube 36 has a seal 41 interposed between the tube 36 and the rotor 35 and a bolt 3
9, feeder casing 34 with gate 38
It is detachably attached to this.

Thus, the drive motor 11 of the conveyor drive mechanism 22 can rotate the rotor 35 of the rotary feeder 21 with respect to the feeder casing 34 and the tube 36 via the gear mechanism 23 and the sleeve 24. The conveyor driving mechanism 22 constitutes a driving device for the rotary feeder 21.

In the screw conveyor 20 and the rotary feeder 21 having such a configuration, the sleeve 24 is rotated via the gear mechanism 23 by the driving of the conveyor driving mechanism 22 (driving device of the rotary feeder 21).
The screw 10 and the rotor 35 are simultaneously driven to rotate. The earth and sand conveyed by the screw 10 of the screw conveyor 20 flows from the receiving opening 46 of the tube 36 to the inclined guide wall 45 by its own weight from the downstream opening 33.
As a result, it is guided to fall into the bucket chamber 44 having a predetermined capacity, and is temporarily isolated from the inside of the screw conveyor 20. The earth and sand divided and stored in the bucket chamber 44 is
With the rotation of, it reaches the upper portion, passes through the opposite side of the inclined guide wall portion 45, and reaches the gate 38 from the discharge port 47. Therefore, the rotation of the bucket chamber 44 can stabilize the discharge ratio of the earth and sand to the gate 38.

Further, the rotor 35 in which the bucket chamber 44 is formed is connected to the conveyor driving mechanism 2 of the screw conveyor 20.
2 is shared, thereby enabling rotation driving, so that the screw conveyor 20 and the rotary feeder 21
It is possible to make the whole compact and secure a work space in the shield machine main body 2.

FIG. 8 is a sectional view showing a state in which the rotary feeder 21 is removed from the screw conveyor 20 when excavating a soil portion that does not require the rotary feeder 21. That is, the bolt 39 and the bolt 40 (FIG. 2) are removed, and the gate 38 and the gear case 2 are removed.
After removing the feeder casing 34, the rotor 35 and the tube 36 located between
By directly attaching 8 to the gear case 25, the earth and sand can be discharged directly from the screw conveyor 20 via the gate 38.

[0030]

As described above, according to the present invention, since the rotary feeder is also driven by the conveyor driving mechanism of the screw conveyor, the size of the equipment can be reduced, and a small-diameter shield excavator can be used. A rotary feeder can be applied, and workability and safety can be improved.

[Brief description of the drawings]

FIG. 1 is a schematic sectional view of a shield machine 1 equipped with a rotary feeder driving device according to an embodiment of the present invention.

FIG. 2 is a main part sectional view showing a screw conveyor 20 and a rotary feeder 21;

FIG. 3 is a side view of the rotary feeder 21 viewed from the downstream side.

FIG. 4 is a cross-sectional view of the feeder casing 34 along the axial direction.

FIG. 5 is a cross-sectional view of the tube 36 along the axial direction.

FIG. 6 is a cross-sectional view of the rotor 35 along the axial direction.

FIG. 7 is a sectional view of the rotor 35 in a direction perpendicular to the axial direction.

FIG. 8 is a sectional view showing a state where the rotary feeder 21 is removed from the screw conveyor 20.

FIG. 9 is a schematic sectional view of a conventional shield machine 1;

FIG. 10 is a sectional view of a main part of a screw conveyor 6 and a rotary feeder 7 in the same.

FIG. 11 is a side view of the rotary feeder 7 side.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Shield excavator (FIGS. 1, 9) 2 Shield machine main body 3 Cutter head 4 Cutter driving motor 5 Bulk head (partition wall) 6 Screw conveyor 7 Rotary feeder 8 Cutter chamber 9 Conveyor casing 10 Screw 11 Drive motor 12 Discharge port DESCRIPTION OF SYMBOLS 13 Feeder casing 14 Drive motor 15 Gate 16 Bucket room 17 Inclined guide plate 18 Discharge port 19 Protection wire net 20 Screw conveyor (FIGS. 1 and 2) 21 Rotary feeder (FIGS. 1 and 2) 22 Conveyor drive mechanism (Rotary feeder 21) 23 Gear mechanism 24 Sleeve 25 Gear case 26 Pinion gear 27 Gear 28, 30 Bolt 29 Bearing 31 First seal 32 Second seal 33 Downstream opening 34 Feeder casing (FIGS. 2, 4) 35 Rotor (FIGS. 2, 6, 7) 36 Tube (FIGS. 2, 5) 37, 39, 40 Bolt 38 Gate 41 Seal 42 Housing space 43 Partitioning wall 44 Bucket chamber 45 Inclined guide wall 46 Receiving port 47 Discharge port S Face T Segment for tunnel construction

Claims (2)

(57) [Claims] 1. A screw conveyor that conveys earth and sand cut by a cutter head, and a rotary feeder that is connected to the screw conveyor and that discharges the earth and sand that has been conveyed and temporarily separated from the screw conveyor. Wherein the rotary feeder separates and stores the earth and sand conveyed by the screw conveyor into a bucket chamber having a predetermined capacity, and discharges the earth and sand by rotation of the bucket chamber. a driving apparatus of a rotary feeder in the shield machine, provided with a rotor on the rotary feeder, the bucket chamber formed in this rotor, and rotatably driven this rotor by the conveyor drive mechanism of the screw conveyor, Luo, the conveyor drive mechanism includes a drive motor and a gear mechanism coupled to the drive motor, disk of the screw conveyor coupled to the gear mechanism
A sleeve for transmitting a driving force to the crown, wherein the rotor can rotate integrally with the sleeve.
A driving device for a rotary feeder in a shield machine, wherein the driving device is connected to the rotary machine. 2. A screw conveyor that conveys earth and sand cut by a cutter head, and a rotary feeder that is connected to the screw conveyor and that discharges the earth and sand that has been conveyed and temporarily separated from the screw conveyor. Wherein the rotary feeder separates and stores the earth and sand conveyed by the screw conveyor into a bucket chamber having a predetermined capacity, and discharges the earth and sand by rotation of the bucket chamber. a driving apparatus of a rotary feeder in the shield machine, provided with a rotor on the rotary feeder, the bucket chamber formed in this rotor, and rotatably driven this rotor by the conveyor drive mechanism of the screw conveyor, Luo, in the center of the rotor, or the screw conveyor
Tubes that can guide the earth and sand into the bucket chamber.
The tube and the rotor are arranged around the rotor.
Feeder casing that forms the bucket chamber with the
A rotor, the tube, and the feeder case.
A driving device for a rotary feeder in a shield machine , wherein the shing is detachable from the screw conveyor .