JPH1144181A - Muck carrying method and self-traveling conveyor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate work by loading muck in a rear muck crusher by a muck loading means, carrying it backward by a self-traveling conveyor after being crushed, and delivering it to a freely movable belt conveyor. SOLUTION: Muck generated in a working face is dropped in a self-traveling crusher device 13 by a muck loader 11. Large one among the muck is sent to a horizontal jaw crusher 17, and is crushed, and is put together with small muck by a belt conveyor 15, and is transferred to a self-traveling bridge conveyor 25. The self-traveling bridge conveyor 25 is mounted on a turning stand 28 of a traveling carriage 26, and is retreated at blasting time, and is returned to a former position at carrying work time, and can also be swung in the horizontal direction. Since a self-traveling conveyor is arranged between the muck crusher 17 and a belt conveyor 30, a distance between the a belt conveyor 30 and a working face can be kept large, and the belt conveyor 30 can be protected from influence at blasting time.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of transporting shears generated at a face when excavating a ground for constructing a tunnel or the like, or piled shears whose loading position changes every moment. And self-propelled conveyors.

[0002]

2. Description of the Related Art Generally, when excavating a tunnel or a mountain, debris generated when the rock face of a face is blasted, rock-cut, or split rock is carried out by a dump truck or the like. However, the exhaust gas, dust, noise, etc. generated from the dump truck may deteriorate the surrounding environment and work environment, and especially during tunnel excavation, the transfer work must be interrupted when the dump truck is replaced. Therefore, there is also a problem that the transport work efficiency is poor.

For this reason, in recent years, the use of an electric belt conveyor has been considered. However, in order to use the belt conveyor, the slip can be transported on the belt conveyor because the slip is mounted on the belt conveyor and transported. Need to be crushed. The present inventors have disclosed a technique for crushing the debris and transporting the debris on a belt conveyor as disclosed in Japanese Patent Application Laid-Open No. 9-0-9.
No. 88485 has already proposed a shear crushing apparatus. This technology not only crushes and transports debris but also arranges a movable conveyor that can swing and turn freely and that can move freely behind a crushing mechanism that can move freely. In this way, when the mounting position of the shears changes or the positional relationship between the crushing mechanism and the belt conveyor shifts with the progress of excavation, the positional relationship can be easily adjusted by swinging and turning the movable conveyor. It was made.

[0004]

However, the above-mentioned technique proposed by the present inventors also has the following problems. That is, when the positional relationship between the crushing mechanism and the belt conveyor is deviated, in order to adjust the positional relationship by swinging and rotating the movable conveyor, the front end side corresponds to the crushing mechanism, and the rear end side Must be adapted to the belt conveyor, and the position can be adjusted much more than before, but there is still room for improvement in terms of simplification of the operation. The present invention has been made in consideration of the above points, and has as its object to provide a shear transfer method and a self-propelled conveyor that can further facilitate the work.

[0005]

The invention according to claim 1 is
In order to transport the debris backward, the debris is loaded into the debris crushing device behind the debris by means of debris loading means arranged at the forefront, and the debris is crushed by the debris crushing device. Then, in the self-propelled conveyor, the shears are conveyed rearward and transferred to a belt conveyor to which the rear end of the self-propelled conveyor is movably linked, and thereafter, the shears are rearmost moved by the belt conveyor. It is characterized by being transported to

According to a second aspect of the present invention, in the method of the first aspect, the self-propelled conveyer is caused to move by itself when the mounting position of the slip moves forward or backward, and the like. A method of transporting a slip, wherein the trailing end is moved forward or backward with the trailing end linked to the belt conveyor. doing.

According to a third aspect of the present invention, there is provided a self-propelled conveyer, which is rotatably mounted on a self-propelled traveling vehicle, and whose rear end is mounted on a support stand. It is linked and supported, and the support base is movable along a belt conveyor installed behind the self-propelled conveyor.

[0008]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an exploded perspective view of a self-propelled conveyor according to an embodiment of the present invention; FIG. Here, an example will be described in which the shear transport method and the self-propelled conveyor according to the present invention are used for transporting, for example, excavation waste in a tunnel. FIG. 1 is a plan view showing the configuration of a front portion of a transport device used in the shear transport method of the present invention, FIG. 2 is a side view of the same portion, FIG. 3 is a side view of a portion subsequent to FIG. Fig. 4 is a side view showing a configuration of a slide center passing portion in the device, Fig. 4 (b) is a transverse sectional view of the portion, and Fig. 5 is a side view showing a configuration of a wellhead side in the device.

This slip transport device is for transporting the foremost slip generated at the cutting face (foremost portion) 2 of the tunnel 1 shown in FIG. 1 backward, and is loaded on the cutting face 2 of the tunnel 1. Machine (slipping loading means) 11, a self-propelled crusher device (slipping crusher) 13 provided subsequent to the shear loading device 11, and a self-propelled crusher device 13
From the position of the self-propelled bridge conveyor (self-propelled conveyor) 25 and the self-propelled bridge conveyor 25 shown in FIG. 2 as shown in FIG. And a main belt conveyor (belt conveyor) 30 integrally extended to 100. A small auxiliary loader 12 is also provided near the forefront face 2.

As shown in FIG. 1 and FIG.
1 has a chain conveyor 11a for loading on a traveling vehicle 11b, and transports the slip generated by the face 2 to a high place at the rear, and drops it onto a self-propelled crusher device 13.

The self-propelled crusher device 13 has a traveling mechanism 20 of a crawler type and a fixed jack 21 and can be self-propelled to an arbitrary position and fixed. The traveling mechanism 20 can be driven by both an engine and a motor.

The self-propelled crusher device 13 has a vibrating grizzly feeder 14 at a front portion, and receives a slip falling from the slip loader 11 here. Smaller of the scraps fed to the vibrating grizzly feeder 14 are sifted as they are and ride on the belt conveyor 15 arranged below. The larger one is from the vibrating grizzly feeder 14 to the apron feeder 1 installed at the rear.
6 and is sent to the horizontal jaw crusher 17 where it is crushed into small pieces. This horizontal jaw crusher 1
Reference numeral 7 denotes a pair of two jaws 17a, 1 having a vertical rotation shaft (not shown) and operating in the horizontal direction to sandwich the slip.
7a. And the crushed waste,
On the belt conveyor 15 arranged below, together with the small slip, the vehicle moves to the front end of the self-propelled bridge conveyor 25 at the rear end of the self-propelled crusher device 13.

Although a normal jaw crusher has vertical jaws, the height of the machine is high and the machine cannot be placed in a narrow space such as in a tunnel. However, this horizontal jaw crusher 17 has a pair of two jaws 17a, 17a, Since 17a is placed horizontally and its height is reduced (about 2 m), it can be inserted even in a tunnel. Then, the material is forcibly supplied by the apron feeder 16 because of the horizontal arrangement.

[0014] Crushing (crushing) all of the generated waste is tedious and time consuming. However, in this self-propelled crusher device 13, the size of the waste is sorted by a vibrating grizzly feeder 14 before the crushing. And
Only crushes larger than a predetermined size are crushed.
Since it is dropped on the lower belt conveyor 15 as it is, the crushing time is shortened and the efficiency is high.

The driving of the vibrating grizzly feeder 15, the horizontal crusher 17, the belt conveyor 16, and the apron feeder 16 is always performed, so that they are electrically driven.

As shown in FIGS. 1 and 2, the self-propelled bridge conveyor 25 can be retracted about 30 to 50 m behind when blasting, and can be returned to its original position during transport work. It is mounted on a 26 turntable 28. Then, by turning the swivel 28, the swivel 28 can swing in the horizontal direction. Further, the height can be adjusted by a height adjusting jack 29.

The self-propelled bridge conveyor 25 is provided from the self-propelled crusher device 13 to the main belt conveyor 30.
It is intended to transfer the waste well, the rear end is
It rests on a walking frame 35 provided at the front end of the main belt conveyor 30. The rear end support portion is provided with a support pedestal 27 having wheels that can travel in the front-rear direction on the traveling rail 31 provided on the walking frame 35. The traveling rail 31 is laid in a predetermined range from the front end of the main belt conveyor 30 so that when the self-propelled bridge conveyor 25 retreats, the rear end can be reliably supported. In FIG. 3, a range indicated by reference numeral L is a range in which the support base 27 moves at the time of blasting, and a stopper 34 is provided at a position further rearward than the range.

The main belt conveyor 30 has one belt 3
2 is continuous to the bottom of the mine, so that the waste can be transported to the mine at a stretch. Main belt conveyor 30
Is provided with a walking device 36 as an advance mechanism for advancing the position of the front portion. The walking device 36 includes a walking frame 35, a walking boot 38, a lifting hydraulic jack 40, and a forward / backward moving hydraulic jack 41.

The walking device 36 is divided into a front walking device 36A and a rear walking device 36B, and the front walking device 36A and the rear walking device 36B are connected via a vertical motion error absorbing frame 35C. The walking frame 35 includes a front walking device 36A and a rear walking device 3.
6B, it is divided into a front walking frame 35A and a rear walking frame 35B. The vertical motion error absorbing frame 35C includes a front walking frame 35A and a rear walking frame 35B.
The vertical movement error is absorbed.

Two walking boots 38 are supported by the walking frames 35A and 35B via the guide shoes 37 so as to be slidable in the front-rear direction. The front and rear walking boots 38 are connected by a connecting rod 42. The forward / backward traveling hydraulic jack (walking boot drive mechanism) 41 moves these walking boots 38 in the forward / backward direction.
It is arranged before and after each walking frame 35A, 35B.

When the walking device 36 is advanced,
First, the walking frames 35A, 35B are lifted by the lifting hydraulic jack 40, and the walking boots 38 are lifted off the floor. Next, in this state, the walking boot 38 in the floating state is moved forward by driving the hydraulic jack 41 for forward and backward movement. After being moved to the front side, the walking frames 35A and 35B are lowered by the hydraulic jack 40 for lifting and lowering, and the walking boot 3
8. Land on the floor. Next, the walking frames 35A and 35B are moved forward by the reaction force by driving the hydraulic jack 41 for forward and backward movement in the opposite direction. that time,
The walking boot 38 sticks to the floor. In the case of moving forward more than one stroke, the robot is advanced by a necessary amount by repeating the above operation.

The main belt conveyor 30 connected to the wellhead is
On the way, as shown in FIGS. 4A and 4B, the vehicle passes through a slide center 50 provided in the tunnel 1. In this passing portion, the conveyor belt 32A of the main belt conveyor 30 is pierced through a cylindrical frame 58 provided in the middle of the leg 50a of the slide center 50, and a carrier roller disposed in the cylindrical frame 58 is provided. 59 supported.

In this section, since it is difficult to provide a horizontal space for the width of the belt in the center 50, the space is secured by holding the return belt 32B vertically instead of horizontally. In this case, the section S1 in which the return belt 32B shifts from horizontal to vertical,
In addition, since a section S2 that transitions from vertical to horizontal is required, the direction of the belt 32B is changed by the correction roller 47 in that section. In this manner, the use of the slide center 50 is not much different from the usual case.

The main belt conveyor 30 connected to the wellhead 100 passes through an invert excavation section 70 as shown in FIG. At this time, at least in this section, the carrier roller of the main belt conveyor 30 is supported by the bracket 44 extending from the side wall of the tunnel 1, whereby the inverting excavator 7 by the excavator 71
0 excavation work is possible.

The rear end of the main belt conveyor 30 (the wellhead 10
0), the spare belt 32C is stored and the spare belt 32C is moved in accordance with the advance of the walking device 36 in FIG.
A belt storage device (belt stretching / tensioning device) 80 is provided for feeding the belt. The belt 32 reverses from the transport side to the return side with the drive pulley 90 at the tip. The belt storage device 80 is provided on the return side.

In the belt storage device 80, a storage space 81 is secured between the fixed frame 82 and the movable frame 83, and a reserve belt 32C of about 100 to 200 m is stored in the storage space 81. The extra belt 32C is
It is stored in the storage space 81 by being reciprocated multiple times using a large number of pulleys 84, and is moved out as the return belt 32B while adjusting the tension by moving the movable frame 83 with the tension winch 87.

The tension winch 87 is driven in accordance with the overhang of the forward / backward moving hydraulic jack 41 provided on the walking device 36 of the main belt conveyor 30. That is,
The tension of the belt 32 is detected by a sensor (not shown), and the tension winch 87 is driven to the loose side in accordance with the detected value, and the belt 32 is sequentially fed out. Thereby, the main belt conveyor 30 is stretched.

If the spare belt 32C of 100 to 200 m is stored, the main belt conveyor 30 can be stretched for about two weeks by feeding the belt 32. Therefore, when the spare belt 32C is reduced, a new spare belt is added in the middle before the spare belt 32C is completely extended, so that the spare belt 32C can be newly extended according to the progress of the tunnel.

Next, a series of operations will be described. When transporting the shears generated by the blasting face 2 due to blasting or the like, as shown in the figure, a shear loader 11 is provided at the front end, a self-propelled crusher device 13 is provided behind the loader 11, and a self-propelled crusher 13 is further provided behind. A bridge conveyor 25 is provided. Then, the waste is put on the main belt conveyor 30 via the self-propelled crusher device 13 and the self-propelled bridge conveyor 25. Since the belt 32 continuously extends to the wellhead 100, the shears placed on the main belt conveyor 30 are carried to the wellhead 100 at a stretch.

When the transport device is advanced in accordance with the excavation,
The self-propelled crusher device 13 and the self-propelled bridge conveyor 25 are moved forward by self-propelled. In addition, the main belt conveyor 30 is moved forward by the operation of the walking boot 38 and the belt 32 is fed out by the belt storage device 80 to extend the entire length.

At the time of blasting, the shear loader 11, the self-propelled crusher device 13, the self-propelled bridge conveyor 2
5 is retracted to a predetermined position. As a result, the main belt conveyor 30 at a position away from the face 2 is, of course,
The shear loading machine 11, the self-propelled crusher device 13, and the self-propelled bridge conveyor 25 can also be prevented from being affected by flying stones caused by blasting.

The rear end of the self-propelled bridge conveyor 25 is supported by the support base 27 which can run on the running rail 31 of the main belt conveyor 30. When the self-propelled bridge conveyor 25 is moved forward or backward when the transporting device advances or blasts, the rear end can be reliably supported.

In the above-described embodiment, the slip transport method and the self-propelled conveyor according to the present invention are configured to be used, for example, for transporting excavated debris in a tunnel.
The same effects as described above can be obtained by applying the present invention to other cases, such as when the loading position of the slip changes every moment. In this case, in the above-described embodiment, the slip transport device is configured to be gradually advanced and extended, but may be configured to be gradually retracted and contracted. Other than this, any other configuration may be adopted without departing from the gist of the present invention.

[0034]

As described above, claims 1 and 2
According to the shear transport method according to the above, the shear generated by blasting or the like is crushed by a shear crusher, and is transferred to a belt conveyor via a self-propelled conveyor and transported rearward,
Work efficiency can be improved. In addition, since the self-propelled conveyor is provided between the shearing device and the belt conveyor, the distance between the belt conveyor and the face can be kept large, and the belt conveyor can be protected from the effects of blasting. In addition, the slip can be reliably transferred to the belt conveyor. In this case, since the shear crushing device and the self-propelled conveyor can be retracted rearward at the time of blasting, the equipment can be protected from the influence of flying stones due to blasting. Further, since the rear end of the self-propelled conveyor is movably linked to a predetermined range in the front part of the belt conveyor, even when the position of the self-propelled conveyor moves, the rear end is always located on the belt conveyor. Therefore, movement can be performed more easily, and connection of slips can be easily performed.
Further, when excavating the tunnel, the shear crushing device and the self-propelled conveyor can be advanced by self-propelled as it is, so that it is possible to easily follow a change in the excavation and the mounting position of the slip. Therefore, it is possible to solve all the problems when employing the belt conveyor, and to perform the conveyance of the waste by the belt conveyor, thereby improving the working environment in the tunnel as compared with the conveyance by the dump truck, Further, the transfer efficiency can be improved by the continuous transfer.

According to the self-propelled conveyor according to the third aspect,
Because it is supported by a support base that is movable on the belt conveyor, when moving or blasting the transport device according to excavation, when moving the self-propelled conveyor forward or backward,
The rear end can be reliably supported. This makes it possible to move the self-propelled conveyor more easily.

[Brief description of the drawings]

FIG. 1 is a plan view illustrating a configuration of a front portion of a shear transport device used in a shear transport method according to the present invention.

FIG. 2 is a side view showing a configuration of a front part of the apparatus.

FIG. 3 is a side view of a portion subsequent to FIG. 2;

FIG. 4A is a side view showing a configuration of a slide center passing portion in the apparatus, and FIG. 4B is a cross-sectional view of the same.

FIG. 5 is a side view showing a configuration of a wellhead side in the same device.

[Explanation of symbols]

 2 Face (forefront) 11 Shedding loader (Sheet loading means) 13 Self-propelled crusher device (Swarf crushing device) 25 Self-propelled bridge conveyor (Self-propelled conveyor) 26 Traveling trolley 27 Support gantry 30 Main belt conveyor (Belt) Conveyor) 100 wellhead (last part)

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Sumio Yamada 2-28 Asahicho, Omuta-shi, Fukuoka Prefecture Inside the Miike Works of Mitsui Miike Works (72) Inventor Kazuki Tsuji 2-1-1 Nihonbashi Muromachi, Chuo-ku, Tokyo No. 1 Inside Mitsui Miike Works

Claims (3)

[Claims] In order to transport the waste backward, the waste is loaded into a waste crushing device at the rear thereof by a waste loading means provided at a foremost portion, and the waste is crushed by the waste crushing device, and then the self-propelled moving device is moved rearward. The self-propelled conveyor transfers the debris to the rear, and transfers the debris to a belt conveyor to which the rear end of the self-propelled conveyer is movably linked. A method of transporting a slip, comprising transporting the belt to the last part on a belt conveyor. 2. The method according to claim 1, wherein
When, for example, the mounting position of the slip advances or retreats, the self-propelled conveyor is caused to run by itself, and the rear end is moved forward or backward with the rear end still linked to the belt conveyor. Slip transport method. 3. A self-propelled conveyor, wherein the self-propelled conveyor is rotatably mounted on a self-propelled traveling vehicle, and a rear end of the self-propelled conveyor is supported by being linked to a supporting frame. The self-propelled conveyor, wherein the support gantry is movable along a belt conveyor installed behind the self-propelled conveyor.