JPH06158683A - Method for loading muck and muck loader - Google Patents

Abstract

PURPOSE:To simultaneously carry out the work of drilling and scraping muck and the work of excavating the peripheral wall surface of a tunnel by mounting on one side of a base a boom support frame to which twin booms having a excavating bucket at one end are pivotally attached, and mounting on the other side of the base a parallel link on which triple booms to the ends of which breakers, etc., can be mounted are disposed in such a manner as to be rotatable about vertical and horizontal axes. CONSTITUTION:A boom support frame 19 mounted on one side of the base 2 of a self-traveling crawler 1 is horizontally turned by means of a boom open cylinder via a boom open turning pin. Next, twin booms 5, 9 are moved to and installed in a prescribed drilling position by means of a boom horizontally oscillating cylinder 24 via a bucket turning pin 23 and then a drilling bucket 11 is moved by means of driving cylinders 8, 10, 13, 24 for drilling and scraping-up operations. Also, a parallel link 26 mounted on the other side of the base 2 is oscillated by means of a cylinder 28 and triple booms 31, 33 are operated by means of cylinders 35-38 to perform an operation for drilling the arched peripheral wall P of a tunnel in the direction of arching by means of a breaker 40, etc.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shear loading method and a shear loading machine used in tunnel excavation, and more particularly, to a boom support frame having two booms pivotally attached to the tip thereof, and a tip end of the boom support frame. A parallel link with rotatably arranged triple booms to which breakers and the like can be removably attached is equipped on both sides of the base on the self-propelled crawler, and the excavation scraping work of the shear by the excavation bucket is performed. Concurrently with the above, the present invention relates to a shear loading method and a shear loading machine capable of selectively performing an excavation work for an arch-shaped tunnel peripheral wall surface, a drilling work for a wall roof bolt, and a concrete spraying work on a wall surface with a breaker or the like. .

[0002]

2. Description of the Related Art A conventional shear loader with a breaker is mounted on a self-propelled crawler 1 as shown in FIGS.
A conveyor 3 is tiltably pivoted at the center of the base 2, and a gate-shaped boom support frame 4 is fixedly mounted on the front of the base 2 so as to straddle the front half of the conveyor 3. There is. A support bracket 6 of a rear boom 5 is attached to the boom support frame 4 by a vertical pin 7 so as to be pivotable in the horizontal direction. The rear boom 5 is vertically rocked by a cylinder 8 with respect to the support bracket 6. The front boom 9 is attached to the cylinder 10 at the tip of the rear boom 5.
It is pivotally attached so as to be swingable in the vertical direction. Also,
A bucket 11 is pivotally attached to the front end of the front boom 9, and the bucket 11 is further connected via a link 12 to the cylinder 1.
By means of 3, it is possible to swing in the vertical direction. Further, a breaker A is attached to the front boom 9. Further, a driver's cab 14, an engine driving hydraulic unit 15, a motor driving hydraulic unit 16 and the like are arranged on the side of the conveyor 3 pivotally attached to the base 2 so as to be tiltable. Note that reference numeral 17 indicates a shift transportation truck, and reference numeral 25 indicates a cable reel.

Further, in the excavator and loader disclosed in Japanese Patent Laid-Open No. Hei2-12030, the rear end of the front boom having a cutter at its tip is pivotally supported at the front end of the rear boom, and the boom portion 10 is a main body. The supporter provided in 1 is capable of angular displacement in the horizontal and vertical directions around the fulcrum 30. A movable trough is provided between the front boom and the rear boom, and the movable trough is arranged on the front boom and the rear boom. An endless rotating chain scraper is provided across the drive vehicle to form a continuous extension surface with the transfer guide surfaces of the front boom and the rear arm and the guide surface of the movable trough that are straight with respect to each other. The upper part of the endless rotating chain scraper running along it enables excavation to be transferred rearward, and the front boom is bent upward with respect to the rear boom, and the upper part of the endless rotating chain scraper and the front boom,
An excavation and conveyance mechanism is provided on the vehicle body so that the positions related to the conveyance guide surfaces of the rear boom can be seen from the side and along each side of the triangle, and the movable trough can be tilted downward to prevent the excavation material from being transferred backward. In the excavator-loading machine described in this publication, the front boom is bent and the relative position between the upper running part of the chain scraper and the transport guide surfaces of the front boom and the rear boom is viewed from the side. If it is formed along each side of the triangle and the movable trough is tilted, transfer of the excavated material to the transport guide surface of the front boom becomes impossible, and there is temporarily no mining car etc. behind the excavator loader. Even in this case, it is possible to continue excavation.

[0004]

However, the conventional shear loader with breaker shown in FIGS. 4 and 5 straddles the front half of the conveyor 3 pivotally attached to the center of the base 2 so as to be tiltable. In this way, since the gate-shaped boom support frame 4 in which the support bracket 6 of the rear boom 5 is attached to the front part of the base 2 by the vertical pin 7 is fixed, the bucket 11 is fixed.
When the earth and sand excavated and scraped by the machine are placed on the conveyor 3 and transported to the rear, if large gravel or uncrushed large lumps are mixed in the sediment, these large lumps will become the above-mentioned gate type. There is a problem that the boom cannot be passed through the boom support frame 4 and is caught in the boom support frame 4, and thus the rearward transfer of the earth and sand by the conveyor 3 cannot be performed smoothly. Further, the support bracket 6 of the rear boom 5 and its vertical There was a risk that the pin 7, and in some cases, the gate-shaped boom support frame 4 would also be damaged, making loading work impossible.

Further, in such a state, when the large lump or the like is used as a conveyor, for example, a belt conveyor is rubbed to damage the belt to make it unusable, or a chain with a scraping plate. In the case of the conveyor, there is a drawback that the chain may be broken and the earth and sand cannot be smoothly transferred to the rear. Further, since the breaker A is attached to the front boom 9, it is difficult to position the breaker A at a right angle to the tunnel wall surface, and further, the wall excavation work cannot be performed continuously along the arch-shaped tunnel peripheral wall. There was a drawback.
In addition, for example, when performing a roof bolt drilling work along a wall surface in an arched direction, even if a roof bolt drilling machine can be set in place of the breaker A, the roof bolt drilling machine can be used for each drilling hole. Had to be corrected by the cylinder of each boom, which required a great deal of work time, and on top of that, the lower half of the side wall of the tunnel could not be drilled.

Also, in the excavator and loader disclosed in Japanese Patent Laid-Open No. 2-12030, the boom portion 10 can be angularly displaced in the horizontal and vertical directions about the fulcrum 30 of the support body provided on the main body 1. Therefore, even in this excavator and loader, when the soil is excavated by the cutter drum 7, and the earth and sand is placed on the conveyor 5 by the chain scraper 16 and conveyed backward, large gravel and unexposed material are contained in the earth and sand. There is a problem that a crushed lump or the like is caught on the support provided on the main body 1 and the transfer of the earth and sand by the conveyor 5 to the rear side cannot be performed smoothly as in the conventional loader, or the crushed lump is provided on the main body 1. There was a risk that the fulcrum 30 of the boom part 10 was damaged and a new loading operation would be impossible.

The present invention has been made in view of the above circumstances, and has a simple structure in which a boom support frame is provided on one side of a self-propelled crawler, and an excavation bucket or the like is swung and retracted to the outside of a conveyor device. By smoothly transporting even sediment containing large gravel and uncrushed large lumps to the rear, equipping the other side with a triple boom that can be detachably attached to the breaker etc. Simultaneously with the excavation and scraping work of the slide, continuously in the arched direction of the tunnel peripheral wall surface, and select and perform excavation work, drilling work, drilling work for wall roof bolts, concrete spraying work on the wall surface, etc. It is an object of the present invention to provide a shear loading method and a shear loading machine capable of performing the same.

[0008]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention uses a shear loader in which a conveyor device is tiltably mounted on a base on a self-propelled crawler. In the method, two booms having excavation buckets at their tips are horizontally rotatably arranged on a boom support frame that is horizontally swingable on one side of the base, and at the same time, On the other side, a parallel link that is swingable in the front-rear direction is provided with three booms that can be detachably attached to the tip of the boom so that they can be rotated vertically and can be rotated around a horizontal axis. Using the installed shear loader, the excavation scraping work of the slide and the continuous excavation work in the arch-shaped direction of the tunnel peripheral wall surface are simultaneously performed in parallel by the excavation bucket and the breaker. Loading method In addition, in a shear loader in which a conveyor device is tiltably mounted on a base on a self-propelled crawler, a boom support frame equipped horizontally on one side of the base is equipped with an excavation bucket at the tip. A pair of booms provided with a horizontal frame are arranged so as to be rotatable in the horizontal direction, and a horizontal frame is connected to a parallel link equipped on the other side of the base so as to be swingable in the front-rear direction. A slide-loading machine characterized in that a horizontal swing frame rotatably arranged around a horizontal axis is provided with three booms to which a breaker or the like can be detachably attached at the tip thereof so as to be vertically rotatable. Is.

[0009]

Next, the operation of the present invention will be described. After the slide loader is moved to the excavation site by a self-propelled crawler and the conveyor device on the base is tilted and arranged at a predetermined angle, the base of the base is moved. The boom support frame, which is horizontally swingable on one side, is horizontally swung by the boom open cylinder via the boom open swivel pin and is positioned above the conveyor device on the base. Two booms having excavation buckets at their tips are moved to a predetermined excavation position by the boom left-right swing cylinder via the bucket pivot pin. At the same time, the parallel link, which is swingably mounted on the other side in the front-rear direction, is swung by the drive cylinder to adjust the height so that the breaker at the tip reaches the outer peripheral wall of the tunnel. At the center of the tunnel, then operate the boom with multiple drive cylinders attached to the triple booms, especially with the first cylinder to position the breaker etc. at a right angle to the arched circumferential wall of the tunnel. Excavation, drilling, concrete spraying work etc. After that, the horizontal drive frame is rotated by the rotary drive unit to move the breaker or the like at the tip of the boom to the next predetermined excavation / drill position in the circumferential direction of the tunnel wall surface. In the case of concrete spraying work, the horizontal swing frame is continuously rotated by the swing drive unit.

In this way, the excavation bucket of the shear loader provided on one side is moved to the excavation position and then the excavation scraping operation is started, and at the same time, the breaker arranged on the other side in parallel with this. Position the horizontal swing frame that is the center of rotation of the arched peripheral wall of the tunnel, etc. in the center of the tunnel,
By excavating the horizontal swing frame with the swing drive unit with respect to the horizontal frame, excavation work continued in the arch direction of the tunnel circumferential wall surface, drilling work for roof bolts in the arch direction of the circumferential wall surface, and circumferential wall surface The concrete spraying work in the arched direction can be selected and performed.

The excavating and scraping work is performed by moving the excavating bucket up and down and left and right by a plurality of drive cylinders mounted on two booms. The earth and sand excavated in this manner are scraped by the excavation bucket to the tip of the inclined conveyor device and loaded by the conveyor device onto the earth and sand transport truck arranged behind the conveyor device. Also, excavation work on the tunnel wall surface, drilling work for roof bolts,
Even when performing concrete spraying work on the wall surface, the excavated earth and sand are scraped by the excavation bucket to the tip of the conveyor device, and the work of loading on the earth and sand transport truck is continued without interruption.

On the other hand, when large gravel or uncrushed large lumps are mixed in the excavated soil during the above-mentioned excavation and loading work, the boom support frame is attached to the boom support swing pin by the boom support cylinder. Since the boom support frame can be swung and retracted to the upper side of the outside of the conveyor device together with the two booms having the excavation buckets at the tip, the swivel can be swung horizontally through the soil. Even if such items are included, they can be smoothly transferred to the rear by the conveyor device and loaded on the earth and sand transportation truck.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. 1 is a plan view of this embodiment, FIG. 2 is a side view thereof, and FIG. 3 is a plan view showing a working state. In the figure, the same or equivalent parts as those of the conventional shear loader described above are designated by the same reference numerals, and detailed description thereof will be omitted. In this embodiment, as shown in FIGS. 1 to 3,
A base 2 is provided on the self-propelled crawler 1, and a conveyor 3 is pivotably attached to the center of the base 2 so as to be tiltable.
A boom supporting frame 19 is horizontally rotatably attached to a boom open pivoting pin 18 standing vertically on the base 2 on the side of the front half of the base supporting projection 20 of the boom supporting frame 19. The boom open cylinder 21 rotatably attached to the base 2 is rotatably attached.
On the other hand, a support bracket 22 for supporting the rear boom 5 is attached to the tip end of the boom support frame 19 so as to be horizontally pivotable by a bucket pivot pin 23 to support the base projection 20 of the boom support frame 19 and the rear boom 5. A boom left / right swing cylinder 24 is connected to the supporting bracket 22.

The rear boom 5 can be vertically swung by the cylinder 8 with respect to the support bracket 22, and the front boom 9 can be vertically swung by the cylinder 10 at the tip of the rear boom 5. It is pivotally attached. A bucket 11 is pivotally attached to the tip of the front boom 9,
Further, the bucket 11 can be vertically swung by a cylinder 13 via a link 12. Further, a driver's cab 14, an engine drive hydraulic unit 15, a motor drive hydraulic unit 16 and the like are provided on the base on the side where the boom open turning pin 18 is provided with respect to the conveyor 3 pivotally attached to the base 2 in a tiltable manner. It is arranged. Note that reference numeral 17 indicates a shift transportation truck, and reference numeral 25 indicates a cable reel.

On the other hand, a pair of parallel links 26 are rotatably disposed on the base 2 on the opposite side to which the boom open pivot pin 18 is provided, and the upper ends of the parallel links 26 are respectively connected to the horizontal frame 2.
7, the parallel link 26 is swingable in the front-rear direction by a drive cylinder 28. The horizontal frame 27 is provided with a horizontal swing frame 30 that can be swung by a swing drive unit 29, and a support bracket 32 that supports a third boom 31 of a triple boom is fixed to the horizontal swing frame 30. Third boom 31
A second boom 33 and a first boom 34 are pivotally mounted in front of the cylinders 35, 36, 37, 38, respectively.
It is possible to swing vertically. A mounting portion 41 such as a breaker 40 is attached to the tip portion of the first boom 34 via a link 39. A breaker 40, a punching machine, a roof bolt punching machine, a concrete spray nozzle, and the like can be detachably mounted on the mounting portion 41.

Explaining the operation of this embodiment, the self-propelled crawler 1 moves the shear loader of this embodiment to the excavation site, and then the conveyor device 3 on the base 2 is moved to a predetermined angle by a cylinder (not shown). Tilt placement. After that, a boom support frame 19 rotatably attached to a boom open pivot pin 18 standing vertically on the base 2 on the side of the front half of the conveyor 3 drives a boom open cylinder 21 to drive the boom support frame 19. The tip portion is horizontally swiveled onto the central portion of the conveyor 3, and the boom left / right swing cylinder 24 is driven to drive the support bracket 22 of the rear boom 5 via the bucket swivel pin 23.
Is rotated to move the digging bucket 11 at the tip of the booms 5 and 9 to a predetermined digging position.

On the other hand, the parallel link 26, which is mounted on the other side of the base 2 so as to be swingable in the front-rear direction, is swung by the cylinder 28 to be supported by the support bracket 32 fixed to the lateral swing frame 30. The breaker 40 mounted on the tip mounting part 41 of the above is driven by the drive cylinders 35, 36, 37, 38 mounted on the booms 31, 33, 34 so that the breaker 40 at the tip reaches the arched peripheral wall P of the tunnel. Is adjusted and the rotation center of the horizontal turning frame 30 is positioned at the center of the tunnel, and then the first excavation work is performed. At this time, it is particularly important to position the breaker or the like at a right angle to the arched peripheral wall P of the tunnel by the cylinder 38 of the first boom 34 at the tip.

After the work at the first excavation position is completed, the lateral turning frame 30 is moved by the turning drive unit 29.
And the support bracket 32 fixed to this
The breaker 40 attached to the tips of the booms 31, 33, and 34 is moved to the next predetermined excavation position in the arch-shaped direction of the arch-shaped peripheral wall P of the tunnel via the. In this case, if necessary, instead of the breaker, a punching machine, a roof bolt punching machine, a concrete spraying nozzle or the like may be attached to the tip mounting portion 41 to perform a roof bolt drilling work or a concrete spraying work on a tunnel wall surface. In the case of concrete spraying work, the horizontal swing frame is continuously rotated by the swing drive unit.

In this way, the excavation bucket 11 provided on one side of the base 2 of the present embodiment is moved to the excavation position and then the excavation scraping work is started, and at the same time, the base 2 is moved in parallel. Drive the 3 booms arranged on the other side to the drive cylinder 3
5, 36, 37, 38 to excavate the arch-shaped peripheral wall P of the tunnel in the arch-shaped direction by the breaker 40 at the tip thereof, the drilling work for the roof bolt, the arch-shaped peripheral wall P in the arch-shaped direction. Concrete spraying work can be selected and performed. Therefore,
A plurality of drive cylinders 8, 10, 1 equipped on the booms 5, 9 are used for the continuous excavation work in the arched direction on the tunnel wall surface by the breaker 40 and the excavation scraping work for the excavation slide.
The excavation bucket 11 is moved up and down, and left and right by 3, 24, and the earth and sand excavated by the excavation bucket 11 is scraped by the tip of the inclined conveyor 3 and placed behind it and loaded on the earth and sand transport truck 17. Be done.

When large gravel or uncrushed large lumps are mixed in the excavated soil during the excavation and loading work, the boom support frame 19 is quickly boom-opened by the boom open cylinder 21. The swing boom 18 is horizontally swung and retracted in the direction of the arrow in FIG. 1, or two booms 5 and 9 equipped with an excavation bucket 11 at the tip end.
At the same time, it is swung up and out of the outside of the conveyor 3 to safely transfer large gravel and uncrushed large lumps mixed with the earth and sand on the conveyor to the rear for loading on the earth and sand transportation truck.

Therefore, according to the present embodiment, even when large gravel or uncrushed large lumps are mixed in the excavated soil during the shear excavation loading operation, the excavation bucket 11 is provided at the tip of the excavated bucket 2. Boom support frame 1 together with a series of booms 5 and 9
9 can be swung in the direction of the arrow to swivel and retreat above the outside of the conveyor 3, so that continuous excavation work in the arch-shaped direction on the circumferential wall of the tunnel, drilling work for roof bolts, and arch-shaped wall work. Even when performing a concrete spraying operation, the excavated earth and sand are scraped by the excavation bucket to the tip of the conveyor 3, and the loading operation on the earth and sand transport truck is continued without interruption. Although the two booms and the three booms have been described in the present embodiment, the boom is not limited to this, and the conveyor, the excavation bucket, the breaker, the punch, and the roof are within the scope of the present invention. The present invention is not limited to the bolt punching machine and the concrete spray nozzle.

[0022]

As described above, according to the present invention, the boom supporting frame mounted on one side of the base is provided with the two booms having the excavating bucket at the tip thereof so as to be horizontally rotatable. On the other side, parallel booms that can be swung in the front-back direction are equipped with three booms that are detachably attached to the tip of a breaker, etc. so that they can be rotated in the vertical direction and rotatable about a horizontal axis. Therefore, at the same time as the excavation scraping work of the slide is performed, in parallel with this, the excavation work of the arch-shaped peripheral wall surface continuously in the arch-shaped direction of the tunnel peripheral wall surface, and the roof bolt in the arch-shaped direction of the peripheral wall surface as well. It is possible to selectively perform the drilling work for the work, the concrete spraying work in the arch-like direction on the peripheral wall surface, and the efficiency of the tunnel excavation construction work is significantly improved.

In addition, when large gravel or uncrushed large lumps are mixed in the excavated soil during the shear excavation loading operation, the boom is quickly boomed together with the two booms having the excavation bucket at the tip. The support frame can be swiveled and retracted above the outside of the conveyor device, which allows no problem even if the soil contains large gravel or uncrushed lumps. Loading work on the sediment transport truck, which was scraped up by the tip of the conveyor device, continued to be excavated in the circumferential direction of the wall surface of the tunnel, drilling work for roof bolts in the circumferential direction of the wall surface, concrete work in the circumferential direction of the wall surface as well. It can be continued without interruption even during operations such as spraying, and tunnel excavation work can be performed safely and efficiently. Furthermore, since the operation of pivoting and retracting the boom support frame and the two booms having excavation buckets at the tip to the outside of the conveyor device is performed by one boom open cylinder, it is possible to safely pivot and retract in an emergency. Sediment can also be safely loaded on a sediment transport truck.

[Brief description of drawings]

FIG. 1 is a plan view of the present embodiment.

FIG. 2 is a side view of the present embodiment.

FIG. 3 is a plan view showing a working state of the present embodiment.

FIG. 4 is a plan view of a conventional example.

FIG. 5 is a side view of a conventional example.

[Explanation of symbols]

 1 Self-propelled crawler 2 Base 3 Conveyor 5 Rear boom 8, 10, 13 Cylinder 9 Front boom 11 Excavation bucket 12 Link 17 Gravel transport truck 18 Boom open pivot pin 19 Boom support frame 20 Base protrusion 21 Boom open cylinder 22 Support Bracket 23 Bucket swivel pin 24 Boom left / right swing cylinder 26 Parallel link 27 Horizontal frame 28 Drive cylinder 29 Swiveling drive unit 30 Horizontal swing frame 31 Third boom 32 Support bracket 33 Second boom 34 First boom 35, 36, 37, 38 Cylinder 39 Link 40 Breaker P Arched wall

Claims (4)

[Claims] 1. A shear loading method using a shear loading machine in which a conveyor device is tiltably mounted on a base on a self-propelled crawler, wherein the base can be horizontally swiveled on one side of the base. The boom support frame is equipped with two booms equipped with excavation buckets at the tip so that they can swing horizontally, and on the other side of the base is a parallel link that is swingable in the front-rear direction. , The excavation bucket and breaker are utilized by using a shear loader in which three booms, to which a breaker or the like can be detachably attached at the tip, can be rotated in the vertical direction and are rotatable about a horizontal axis. A shear loading method characterized in that the excavation and scraping work of the slide and the continuous excavation work in the arched direction on the wall surface of the tunnel are performed simultaneously in parallel with each other. 2. The excavating and scraping work of the slide, the drilling work of the tunnel peripheral wall surface, the drilling work for the roof bolt, the concrete spraying work of the wall surface and the like are performed in parallel at the same time. Shear loading method. 3. A shear loader in which a conveyor device is tiltably mounted on a base of a self-propelled crawler, and a boom support frame equipped on one side of the base so as to be horizontally rotatable is provided at a tip thereof. A pair of booms having excavation buckets are arranged so as to be horizontally rotatable, and a horizontal frame is connected to a parallel link provided on the other side of the base so as to be swingable in the front-rear direction. Shear stack characterized in that a horizontal swing frame that is rotatably arranged around a horizontal axis is provided with three booms that can be removably attached to the tip of the horizontal swing frame so that they can be rotated vertically. Embedded machine. 4. The structure according to claim 3, wherein one of a breaker, a boring machine, a roof bolt boring machine, and a concrete spraying nozzle can be selectively attached to the tips of the triple booms. Shear loader.