JPH08128071A - Drilling and mucking method, and device thereof - Google Patents

Abstract

PURPOSE: To enable it to do forward drilling operations simultaneously in parallel with scraping operations to the tip part of a conveyor system as two drilling buckets installed at both sides are separately movable in both vertical and horizontal directions. CONSTITUTION: In a drilling and mucking method, performing in use of a drilling-mucking device made of installing a conveyor system 3 tiltably in a base on a self-propelled crawler, a pair of boom supporting frames 19 being turnable in the horizontal direction separately each are equipped with at both sides of this base 2. Utilizing two drilling buckets 11 at each tip of dual booms installed in these paired boom supporting frames 19, drilling operations are performed simultaneously in parallel with muck's scraping operations to a tip part of the conveyor system 3. These boom supporting frames 19 separately perform the drilling operation by the paired drilling buckets 11 and the muck scraping operation to the tip part of the conveyor system 3 without interfering with each other owing to hydraulic control of two boom open cylinders attached each to the base 2.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for excavating and shearing and a device for excavating and using a boom supporting frame having two booms pivotally attached to the tip of a self-propelled crawler. It is equipped on both sides of the upper base,
With this boom support frame, two excavation buckets provided on both sides of the conveyor device can move independently in the vertical and horizontal directions, so that the excavation work in front and the scraping work to the tip of the conveyor device can be performed in parallel at the same time. BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an excavating / sliding loading method and an apparatus therefor.

[0002]

2. Description of the Related Art As shown in FIGS. 3 and 4, a conventional shear loader is provided with a base 2 on a self-propelled crawler 1, and a conveyor 3 can be tilted at the center of the base 2. A gate-shaped boom support frame 4 is fixedly mounted on the front part of the base 2 so as to be pivotally attached and to straddle the front half of the conveyor 3. The support bracket 6 of the rear boom 5 is attached to the boom support frame 4 by a vertical pin 7 so as to be horizontally rotatable.
After this, the boom 5 is attached to the support bracket 6 and the cylinder 8
The front boom 9 is pivotally attached to the tip of the rear boom 5 by a cylinder 10 so as to be vertically swingable. See also the previous boom 9
A bucket 11 is pivotally attached to the tip of the bucket 11, and the bucket 11 can be vertically swung by a cylinder 13 via a link 12. Also, the base 2
At the side of the conveyor 3 that is pivotally attached to
4, an engine driving hydraulic unit 15, a motor driving hydraulic unit 16 and the like are arranged. 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. 2-125030, 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 that runs along it enables the excavated material 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 and rear booms are That The car body is provided with an excavation transfer mechanism that makes the movable guide trough downward and tilts the movable trough downward so that the positions related to these transfer guide surfaces are along each side of the triangle when viewed from the side. In the excavator-loading machine described in this publication, the front boom is bent to form a triangular shape when the relational position between the upper part of the chain scraper and the front and rear boom transfer guide surfaces is viewed from the side. If it is formed along each side and the movable trough is tilted, transfer of excavated material to the transport guide surface of the front boom becomes impossible, and excavation is possible even if there is no mining car etc. behind the excavator loader temporarily. It is designed to be able to continue.

The shear loader disclosed in Japanese Patent Laid-Open No. 6-158682 has a base 2 mounted on a self-propelled crawler 1.
A conveyor 3 is pivotably attached to the center of the base 2 so that the conveyor 3 can be tilted, and a boom open swiveling pin 18 vertically installed on the base 2 on one side of the front half of the conveyor 3 supports the boom. The frame 19 is attached so as to be pivotable in the horizontal direction, while a support bracket 22 that supports the rear boom 5 is attached to the tip end of the boom support frame 19 for the bucket pivot pin 2.
3, the rear boom 5 is swingable in the vertical direction with respect to the support bracket 22 by the cylinder 8, and the front boom 9 is vertically moved by the cylinder 10 at the tip of the rear boom 5. The front boom 9 has a bucket 11 pivotally attached to the tip of the front boom 9, and the bucket 11 has a link 12
It is possible to swing vertically by the cylinder 13 via the.

[0005]

However, the conventional shear loader shown in FIGS. 3 and 4 is configured so as to straddle the front half of the conveyor 3 which is pivotally attached to the center of the base 2 so as to be tiltable. Support base 6 for the rear boom 5 on the front of the base 2
Since the gate-shaped boom support frame 4 to which is attached by the vertical pin 7 is fixed, the bucket 11 excavates,
When large pieces of gravel or uncrushed large lumps are mixed in the sediment when the scraped soil is placed on the conveyor 3 and conveyed backward, these large lumps support the gate-shaped boom. There is a problem that the boom supporting frame 4 cannot be passed through the frame 4 and is caught in the boom supporting frame 4, which makes it difficult to smoothly transfer the earth and sand backward by the conveyor 3, and further, the supporting bracket 6 of the rear boom 5 and its vertical pin 7, In some cases, even the gate-shaped boom support frame 4 was damaged, and there was a danger that the loading operation would be impossible.

Further, in such a state, when a 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.

Also in the excavator and loader disclosed in the above-mentioned Japanese Patent Laid-Open No. 2-125030, 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.

Further, the shear loader described in the above-mentioned Japanese Patent Laid-Open No. 6-158682 discloses that one excavation bucket is moved up and down by a plurality of drive cylinders mounted on two booms.
When excavating and scraping work is performed by moving it to the left and right, and the excavated earth and sand is scraped by the tip of the inclined conveyor device by the excavation bucket and is loaded by the conveyor device on the earth and sand transport truck arranged behind it. Since there is only one excavation bucket that moves up and down and left and right, it is necessary to separately perform forward excavation work and scraping work to the tip of the conveyor device.

The present invention has been made in view of the above circumstances, and has a simple structure, and a boom support frame having two booms with an excavation bucket at its tip pivotally mounted on each side of a self-propelled crawler. By equipping independently, two excavation buckets provided on both sides can move up and down and left and right independently, so that excavation work in front and scraping work to the tip of the conveyor device are performed in parallel at the same time. An object of the present invention is to provide an excavating / sliding loading method and a device therefor.

[0010]

In order to achieve the above object, the present invention uses an excavating / sliding device in which a conveyor device is tiltably mounted on a base of a self-propelled crawler. -In the shear loading method, a pair of boom support frames that can independently pivot horizontally are provided on both sides of the base, and two boom excavation buckets are mounted on one boom support frame. , And the two excavation buckets at the tip of the boom arranged on the other boom support frame are used to perform the excavation work and the scraping work to the tip of the conveyor device in parallel at the same time. It is a method of excavation and shear loading.

Further, in an excavating and shearing loading device in which a conveyor device is tiltably mounted on a base on a self-propelled crawler, a pair of boom supports which can independently pivot horizontally on both sides of the base. Of the two booms equipped with a frame, each boom supporting frame being provided with an excavation bucket capable of swinging up and down at its tip, rear booms are arranged so as to be swingable independently in the horizontal direction. It is characterized in that the rear boom is arranged so as to be capable of independently swinging in the vertical direction, and a pair of boom support frames capable of independently swinging in the horizontal direction are provided on both sides of the base,
Each of the boom support frames is pivotally attached to a side portion of the base by a vertical boom open pivot pin, and each boom support frame is provided with a boom open cylinder mounted on the base so that two boom support frames are provided at the tip thereof with two excavation buckets. It is characterized in that it is configured so that it can be pivotally moved to both outsides of the conveyor device together with the boom.

Further, a pair of boom supporting frames which can independently pivot horizontally are provided on both sides of the base, and each boom supporting frame is attached to a side portion of the base by a vertical boom open pivot pin. Excavation work by means of two excavation buckets at the ends of each two booms and the conveyor device tip end without being interfered with each other by the hydraulic control of two boom open cylinders that are pivotally attached and each boom support frame is mounted on the base. It is characterized in that it is configured so as to perform the scraping work to and from independently.

[0013]

Next, the operation of the present invention will be described. After moving the excavating and shearing loading device to the excavation site by the self-propelled crawler and tilting the conveyor device on the base at a predetermined angle, the base is moved. A pair of boom supporting frames equipped horizontally on both sides of the base are pivoted horizontally by boom open cylinders via boom open pivot pins, and are positioned above the conveyor device on the base. The two booms having the excavation bucket at the tip are moved and arranged at a predetermined excavation position by the boom left-right swing cylinder via the bucket swing pin at the tip of the boom support frame. Further, via the bucket swing pin at the tip of the other boom support frame, the boom left and right swing cylinders move and arrange the two booms having the excavation bucket at the other tip to the tip of the conveyor device. Using two excavation buckets, excavation work and scraping work to the tip of the conveyor device are simultaneously performed in parallel. At this time, the two boom support frames do not interfere with each other by the hydraulic control of the two boom open cylinders mounted on the base, respectively, and do not interfere with each other by excavation work by the two excavation buckets at the tips of the two booms and to the tip of the conveyor device. The scraping work can be performed independently.

In this way, the present excavation and shear loading method is carried out by excavating work and shearing work in parallel by using a plurality of drive cylinders mounted on two booms arranged on two boom supporting frames. The excavation bucket is moved vertically and horizontally. Then, the earth and sand excavated by one of the excavating buckets are continuously scraped by the other excavating bucket to the tip end of the inclined conveyor device, and loaded by the conveyor device on the earth and sand transport truck arranged behind the conveyor device.

When large gravel or uncrushed large lumps are mixed in the excavated earth and sand during the above-mentioned excavation and shear loading work, the boom support frame is attached to the boom support swing pin by the boom support cylinder. It is possible to swivel horizontally through both, and the boom support frame can be swiveled and retracted to both outsides of the conveyor device together with the two left and right booms equipped with excavation buckets at the tip. Even if it contains a large lump, it can be smoothly transferred to the rear by the conveyor device and loaded on the earth and sand transport truck.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a plan view of this embodiment, and FIG. 2 is a side view thereof. 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, a base 2 is provided on a self-propelled crawler 1 as shown in FIGS. 1 and 2, and a conveyor 3 is pivotally attached to the center of the base 2 so as to be tiltable. On both sides of the section, two boom supporting frames 19 are horizontally rotatably attached to the boom open pivot pins 18 which are erected vertically on the base 2, respectively, and the base protrusions of these two boom supporting frames 19 are attached. A boom open cylinder 21 rotatably attached to the base 2 is rotatably attached to the piece 20. These two boom support frames 19
A support bracket 22 for supporting the rear boom 5 is attached to each of the tip ends of the boom support frame 22 by a bucket pivot pin 23 so that the support bracket 22 supports the base projection 20 of the boom support frame 19 and the rear boom 5.
A boom left and right swing cylinder 24 is connected between the two.

The rear boom 5 is vertically swingable by the cylinder 8 with respect to the support bracket 22, and the front boom 9 is vertically swingable 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, etc. are arranged on the base on one side of the conveyor 3 pivotally mounted on the base 2 so as to be tiltable, and vice versa. A cable reel 25 is arranged on the side. A hydraulic cylinder 2 for suspending the cable is mounted on a support provided on the side surface of the conveyor 3 near the cable reel 25.
6 is provided, and the hydraulic cylinder 26 for suspending the cable is provided.
Comprises a telescopic suspension frame 27, which can be swung by another swiveling hydraulic cylinder 28. The power cable pulled out from the cable reel 25 is connected to a predetermined fixed power source through the telescopic suspension frame 27.
Further, the tensioning device 29 of the conveyor is provided on both sides of the conveyor 3.
Is equipped. Note that reference numeral 17 indicates a shift transportation truck.

The operation of this embodiment will be described. The self-propelled crawler 1 moves the excavating and shearing loading device of this embodiment to the excavation site, and then the conveyor device 3 on the base 2 is predetermined by a cylinder (not shown). Tilt at an angle. After that, the boom open cylinders 21 are driven to move the boom open cylinders 21 to the two boom support frames 19 pivotably attached to the boom open pivot pins 18 vertically erected on the base 2 on both sides of the front half of the conveyor 3. The tip end portion of the support frame 19 is horizontally swiveled onto the central portion of the conveyor 3, and the boom swing left and right swing cylinder 24 is used to move the boom excavation bucket 11 to the tip end via the bucket swing pin 23 at the tip end of the right side boom support frame 19.
The two booms 5 and 9 provided with are moved to a predetermined excavation position. On the contrary, the boom left / right swing cylinder 2 is moved through the bucket swing pin 23 at the tip of the left boom support frame 19.
4, the two booms 5 and 9 having the excavation bucket 11 at the tip are moved to the conveyor device tip portion 3A, and the two excavation buckets 11 and 11 at the tips of these two twin booms are moved.
Thus, the excavation work and the scraping work to the tip portion 3A of the conveyor device are simultaneously performed in parallel.

In this way, the present excavation / slider loading method is such that the excavation work and the scraping work are carried out in parallel at the same time, and a plurality of booms mounted on the two boom support frames 19, 19 are equipped with a plurality of booms. The excavation buckets 11 and 11 are independently moved vertically and horizontally by a drive cylinder. The earth and sand excavated by the right excavation bucket 11 are continuously scraped by the tip portion 3A of the conveyor device 3 inclined by the left excavation bucket 11,
It is loaded by a conveyor device on a sediment transport truck arranged behind it.

If large gravel or uncrushed large lumps are mixed in the excavated soil during the excavation and loading operation, the boom support frames 19 are quickly moved by the left and right boom open cylinders 21. The two boom support frames 19 and 19 are horizontally swung to and from the left and right via the boom open swivel pin 18, and along with this, the two booms 5 and 9 with two excavation buckets 11 are also provided. It is possible to swivel and retract above the outside of the conveyor 3 to safely transfer large gravel and uncrushed large lumps mixed in the earth and sand on the conveyor to the rear and load them on the earth and sand transport truck.

Although the two booms have been described in the present embodiment, the boom is not limited to this, and the conveyor, the excavation bucket, etc. are limited to those shown in the drawings within the scope of the gist of the present invention. Not something.

[0022]

As described above, according to the present invention, the two excavation buckets at the tip of the boom arranged on one boom support frame and the two booms arranged on the other boom support frame. Since the excavation work and the scraping work to the tip of the conveyor device can be performed simultaneously and continuously using the excavation bucket at the tip, loading efficiency on the earth and sand transport truck is significantly improved. .

Further, two boom supporting frames equipped with two booms each having an excavation bucket at the tip are arranged on both sides of the base so as to be independently rotatable in the horizontal direction. Because it moves without interference,
The excavation work and the scraping work to the tip of the conveyor device can be performed simultaneously in parallel and continuously, and the loading work efficiency on the earth and sand transport truck is significantly improved. Also, if large gravel or uncrushed large lumps are mixed in the excavated soil during the shear excavation and loading operation, quickly support two booms with two booms equipped with excavation buckets at the tip. The frame can be swiveled and retracted above the outside of the conveyor device, which allows the conveyor device to smoothly transfer to the rear even if large gravel or uncrushed lumps are contained in the soil. It can be 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 of a conventional example.

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

[Explanation of symbols]

 1 Self-propelled crawler 2 Base 3 Conveyor device 3A Conveyor device tip part 5 Rear boom 8 Cylinder 9 Front boom 10 Cylinder 11 Excavation bucket 12 Link 13 Cylinder 17 Gravel transport truck 18 Boom open turning pin 19 Boom support frame 20 Base protrusion 21 Boom Open Cylinder 22 Support Bracket 23 Bucket Swing Pin 24 Boom Left / Right Swing Cylinder 25 Cable Reel 26 Cable Cylinder Hydraulic Cylinder 29 Tensioner

Claims (4)

[Claims] 1. An excavation / shear-loading method using an excavation / shear-loading device in which a conveyor device is tiltably mounted on a base on a self-propelled crawler, and both sides of the base are independently provided. Equipped with a pair of horizontally supporting boom supporting frames, two boom tip excavating buckets arranged on one boom supporting frame and two boom tip ends arranged on the other boom supporting frame. The excavation and shear loading method is characterized in that the excavation work and the scraping work to the tip of the conveyor device are simultaneously performed in parallel by using the excavation bucket. 2. An excavation / shear-loading device in which a conveyor device is tiltably mounted on a base of a self-propelled crawler, and a pair of boom supports that can independently pivot horizontally on both sides of the base. Of the two booms equipped with a frame, each boom supporting frame being provided with an excavation bucket capable of swinging up and down at its tip, rear booms are arranged so as to be swingable independently in the horizontal direction. An excavating / sliding loading device characterized in that the rear boom is arranged so as to be capable of independently turning in the vertical direction. 3. An excavation / shear-loading device in which a conveyor device is tiltably mounted on a base on a self-propelled crawler, and a pair of boom supports that can independently pivot horizontally on both sides of the base. Each boom supporting frame is pivotally attached to the side of the base by a vertical boom open pivot pin, and each boom supporting frame attaches a drilling bucket to the tip by a boom open cylinder attached to the base. An excavating / sliding loading device, characterized in that it is configured so that it can be pivotally moved to both outsides of a conveyor device together with two booms provided. 4. An excavation and shear loading device in which a conveyor device is tiltably mounted on a base on a self-propelled crawler, and a pair of boom supports that can independently pivot horizontally on both sides of the base. Equipped with a frame, each boom support frame being pivotally attached to the side of the base by a vertical boom open pivot pin, and each boom support frame being hydraulic control of two boom open cylinders mounted on the base, respectively. Excavation work by two excavation buckets at the tip of each twin boom and scraping work to the tip of the conveyor device independently of each other without interfering with each other. Device.