JPH09256789A - Spray rebound collecting device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To collect rebound concrete without disturbing the operation of a handcar. SOLUTION: A belt conveyer 3a is mounted on a truck 1. A collecting board 2 is attached in a freely rotatable manner to the side edge of a truck 1 and is rotated with a hydraulic unit 10 and a hydraulic cylinder. An end of a belt conveyer 3b is coupled in a freely rotatable manner below a belt conveyer 3a at the rear end of the truck 1, and the belt conveyers 3a and 3b are driven with a motor 13. At the time of spraying concrete, the collecting board 2 is lowered and rebound concrete is received. On the other hand, the collecting board 2 is pushed up when collecting rebound concrete, and the rebound concrete is slipped down to the belt conveyer 3a. Then, the rebound concrete collected on the belt conveyers 3a is loaded to a handcar 20 by the belt conveyers 3a and 3b. In this way, the concrete rebound can be collected.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a spray rebound collecting device for collecting rebound concrete generated when concrete is sprayed into an excavated tunnel.

[0002]

2. Description of the Related Art Concrete is sprayed on a wall surface of a tunnel excavated by a tunnel excavator (TBM) by a concrete spraying device in order to stabilize the excavated surface. At that time, part of the green concrete sprayed toward the excavation wall surface bounces with the force of the spray, peels off before solidifying, and falls by gravity before reaching the excavation wall surface. Or Hereinafter, as described above, the concrete that falls when the concrete is sprayed is generically called rebound concrete. By the way, the above-mentioned rebound concrete is left as it is during excavation work by TBM.

[0003]

However, usually,
In the tunnel during excavation, a truck track that conveys excavated soil and materials is laid. Therefore, there is a problem that the rebound concrete left on the track, sleepers or inverts hinders the operation of the truck. There is also a problem that the rebound concrete left unattended adheres to the track, sleepers, inverts, etc., and requires a great deal of time and labor for track removal work and invert cleaning work.

Therefore, an object of the present invention is to provide a spray rebound collecting device for collecting rebound concrete.

[0005]

In order to achieve the above object, the spray rebound collecting device of the invention according to claim 1 is
A dolly that can move in the tunnel axial direction inside the tunnel, and is rotatably attached to at least one side of the dolly, and it is developed along the bottom of the tunnel and is generated when concrete is sprayed on the tunnel wall. The collecting plate that receives the rebound concrete and the collecting plate are driven to rotate so that when the rebound concrete is received, the collecting plate is deployed along the bottom of the tunnel, while the rebound concrete received by the collecting plate is It is characterized in that it is provided with a rotation drive device for lifting the tip of the collecting plate when collecting.

In the above structure, when receiving the rebound concrete, the collecting plate is rotatably driven by the rotative driving device and deployed along the bottom of the tunnel. Then, the rebound concrete generated when the concrete is sprayed on the excavated wall surface of the tunnel is received by the collecting plate. Next, the collecting plate is rotatably driven by the rotative driving device to lift the tip. Then, the rebound concrete on the collecting plate slides down and is collected on the truck side.

The invention according to claim 2 is, in the spray rebound collecting device of the invention according to claim 1, mounted on the trolley and sliding down from the collecting plate whose tip is lifted by the rotary drive device. It is characterized in that it is provided with a conveying means for receiving the rebound concrete and conveying it toward one end of the trolley.

According to the above construction, the rebound concrete sliding down from the collecting plate whose tip has been lifted is conveyed toward one end of the trolley by the conveying means. In this way, it becomes possible to mount the trolley on a truck such as a truck that is parked on one end side.

According to a third aspect of the present invention, in the spray rebound collecting device of the second aspect of the invention, a part of the conveying means is provided so as to project from the one end of the carriage, and the carriage is provided. It is characterized in that the portion projecting from is rotatable about the one end.

According to the above construction, the position of the tip of the carrier is changed around one end of the trolley, depending on the stop position of the carrier that transports the rebound concrete. In this way, the rebound concrete is collected in the transport vehicle with good workability.

Further, in the spray rebound collecting system of the invention according to claim 4, the spray rebound of the invention according to any one of claims 1 to 3 is provided on one of a plurality of tracks laid in the tunnel. It is characterized by running a collecting device.

According to the above construction, the spray rebound collector travels on one of a plurality of tracks laid in the tunnel, and the truck that transports the excavated soil and materials travels on the other track. In this way, the transportation of earth and sand or materials associated with excavation of the tunnel and the rebound concrete collection by the spray rebound collection device are performed without interfering with each other.

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described in detail below with reference to the embodiments shown in the drawings. FIG. 1 is a side view of the spray rebound collecting device of the present embodiment, FIG. 2 is a plan view, and FIG. 3 is a front view. The spray rebound collecting device according to the present embodiment is roughly constituted by a carriage 1, a collecting plate 2, and a belt conveyor 3 as a conveying means.

As shown in FIGS. 2 and 3, the carriage 1 has a structure in which both ends of two main frames 1a and 1b arranged in parallel at a predetermined interval are connected by an auxiliary frame 1c. are doing. A wheel 4 is provided on each of the main frames 1a and 1b, and the wheels 4 out of the two tracks 7 and 8 laid on the sleepers 6 that are bridged over the excavated wall surface 5 of the excavated tunnel. It runs on one of the tracks 7. Reference numeral 22 is a scaffolding board arranged between the sleepers 6, 6, and only one piece is shown and the others are omitted.

One main frame 1b of the dolly 1
At the upper part of the bearing, one side of both ends of the collecting plate 2 is a bearing 9 (see FIG. 3)
It is rotatably attached by. This collection board 2
As shown in FIG. 3, the main frame 1b of the carriage 1 is
Extending obliquely downward from the upper part to the outer side, and is bent midway to horizontally cover the other track 8. A hydraulic cylinder 12 for rotating the collecting plate 2 is installed between the bent portion and the main frame 1b. Further, a yagura 21 is erected at one end of the trolley 1, and a hydraulic unit 10 for rotating the collecting plate 2 is mounted. Then, by operating the operation panel 11, the hydraulic unit 10 operates and the hydraulic cylinder 1
2 is driven and the collecting plate 2 is rotated.

Both main frames 1a, 1b of the dolly 1
A belt conveyor 3a is mounted between the two as shown in FIGS. Below the conveyor belt 3a at the rear end of the carriage 1, one end of the conveyor belt 3b is horizontally rotatably connected by a pin 14 (see FIG. 1) and is arranged diagonally upward. There is. Both belt conveyors 3a and 3b are driven by the operation of the electric motor 13 by the operation from the operation panel 11.

The spray rebound collector having the above construction operates as follows. First, the operation panel 11 of the carriage 1 traveling on one of the two tracks 7 and 8 is operated, and the hydraulic unit 12 is operated to operate the hydraulic cylinder 12.
Contract and the tip of the collecting plate 2 is lowered. Thus, as shown in FIGS. 1 to 3, the collecting plate 2 is unfolded along the bottom of the tunnel, and the other track 8 is horizontally covered by the collecting plate 2. Further, the front end of the belt conveyor 3b, which is connected to the rear end of the carriage 1 by the pin 14, is rotated right above the truck 20 on the track 8. And operation panel 1
By the operation from 1, the electric motor 13 operates and the belt conveyors 3a and 3b are driven.

After that, the spraying nozzle of the spraying arm 16 extending from the concrete spraying device 15 running on the track 7 in front of the truck 1 (that is, on the TBM (not shown) side) to the position on the collecting plate 2. From 17, concrete is sprayed toward the excavated wall surface. Then, the rebound concrete 18 falling at that time is received by the collecting plate 2.

Thus, when the collecting plate 2 is filled with the rebound concrete 19, the spraying of the concrete is stopped, the operation panel 11 is operated again, the hydraulic cylinder 12 is extended by the operation of the hydraulic unit 10, and As shown by the arrow (A), the collecting plate 2 is pushed up to the position (B). Then, the rebound concrete 19 on the collecting plate 2 slides down on the collecting plate 2 and is transferred to the belt conveyor 3a mounted between the main frames 1a and 1b of the carriage 1. Then, the rebound concrete carried to the rear end of the trolley 1 by the belt conveyor 3a falls on the belt conveyor 3b, is carried backward by the belt conveyor 3b, and is loaded on the truck 20 on the track 8.

In this way, of the two tracks 7 and 8, by collecting the rebound concrete while moving on one of the tracks 7, the other track 8 is used and the trolley 1
It is possible to carry materials and the like to the TBM located in front of them without disturbing the rebound concrete collection.

As described above, in the spray rebound collecting device according to the present embodiment, the collecting plate 2 is rotatably attached to the side edge of the carriage 1 on which the belt conveyor 3a is mounted, and the hydraulic unit 10 and the hydraulic cylinder 12 are provided. I am trying to rotate by. Further, at a position below the belt conveyor 3a at the rear end of the carriage 1, one end of the belt conveyor 3b is rotatably connected by a pin 14 so that the electric motor 13 drives the belt conveyors 3a, 3b. . Therefore, when concrete is sprayed, the collecting plate 2 can be lowered to horizontally cover the track 8 to receive rebound concrete, and when collecting rebound concrete, the collecting plate 2 can be pushed up and slid down onto the belt conveyor 3a.
Further, the rebound concrete collected on the belt conveyor 3a can be loaded on the truck 20 by the belt conveyors 3a and 3b. Therefore, the concrete rebound can be collected efficiently.

That is, according to the present embodiment, the rebound concrete is not left on the track, the sleepers, or the inverts and does not hinder the operation of the truck. Further, it is possible to solve the problem that the rebound concrete that has been left unattended adheres to the track, sleepers, inverts, etc., which requires a great deal of time and labor for the track removal work and the invert cleaning work.

In the above embodiment, the collecting plate 2
Although it is provided only on the main frame 1b side of the carriage 1, it may be provided on each of the main frames 1a and 1b. Further, the truck 20 that carries the rebound concrete is run on the track 8, but it may be run on the same track 7 as the dolly 1. In that case, the front end of the belt conveyor 3b, which is connected to the front end of the carriage 1 by the pin 14, may be rotated right above the track 7.

[0024]

As is apparent from the above, in the spray rebound collecting device according to the first aspect of the present invention, the collecting plate is rotatably attached to at least one side of the truck that is movable in the tunnel, and the rotating drive device is used. While rotating the collecting plate to receive the rebound concrete by deploying it along the bottom of the tunnel, the tip of the collecting plate is lifted and the rebound concrete received by the collecting plate is slid off and collected. It is possible to completely collect rebound concrete that was previously left unattended. Therefore, the problem that left rebound concrete becomes an obstacle for excavated sand and trolley for material transportation, and the problem that track removal work and invert cleaning work require a lot of time and labor due to the fixed rebound concrete are all considered. Can be solved.

Further, the spray rebound collecting device of the invention according to claim 2 is mounted on the trolley, receives the rebound concrete sliding down from the collecting plate whose tip is lifted, and conveys it toward one end of the trolley. Since it is provided with a transporting means for carrying the rebound concrete, it becomes possible to automatically mount the rebound concrete on a truck such as a truck that is parked at one end of the truck.

Further, in the conveying means in the spray rebound collecting device of the invention according to claim 3, the portion projecting from one end of the carriage is rotatable around the one end, so that the conveying means. The position of the tip of the can be changed according to the stop position of the carrier. Therefore, the collected rebound concrete can be loaded on the transport vehicle with good workability.

Further, in the spray rebound collecting system of the invention according to claim 4, the spray of the invention according to any one of claims 1 to 3 is provided on one of a plurality of tracks laid in a tunnel. Since the rebound collector is run,
The dolly that transports excavated soil and materials can run on other tracks. Therefore, according to the present invention, it is possible to carry the earth and sand or the material accompanying the excavation and the rebound concrete collection by the spray rebound collecting device without interfering with each other.

[Brief description of drawings]

FIG. 1 is a side view showing an embodiment of a spray rebound collecting device of the present invention.

2 is a plan view of the spray rebound collecting device shown in FIG. 1. FIG.

3 is a front view of the spray rebound collecting device shown in FIG. 1. FIG.

[Explanation of symbols]

1 ... dolly, 2 ... collecting plate, 3
a, 3b ... Belt conveyor, 7, 8 ... Orbit, 1
0 ... hydraulic unit, 12 ... hydraulic cylinder, 13 ... electric motor, 15 ... concrete spraying device, 18, 19 ... concrete rebound, 20 ... truck.

Claims (4)

[Claims] 1. A dolly that is movable in the tunnel in the axial direction of the tunnel, and is rotatably attached to at least one side of the dolly, and is unfolded along the bottom of the tunnel to provide concrete on the wall surface of the tunnel. And a collecting plate that receives the rebound concrete generated when the rebound concrete is sprayed, and the collecting plate is developed along the bottom of the tunnel when the collecting plate is driven to rotate and the rebound concrete is received. A spraying rebound collecting device comprising a rotation drive device that lifts the tip of the collecting plate when collecting the rebound concrete received by. 2. The spray rebound collecting device according to claim 1, wherein the spray rebound collecting device receives the rebound concrete that is mounted on the trolley and slides down from the collecting plate whose tip is lifted by the rotation driving device, A spray rebound collecting device, characterized in that the spray rebound collecting device is provided with a conveying means for conveying toward one end. 3. The spray rebound collecting device according to claim 2, wherein a part of the conveying means is provided so as to project from the one end of the carriage, and a portion protruding from the carriage is the one end. The spray rebound collecting device is characterized in that it is rotatable around the section. 4. A spray rebound collecting system, characterized in that the spray rebound collecting device according to any one of claims 1 to 3 is run on one of a plurality of tracks laid in a tunnel. .