JP3210746B2 - Shear loading machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shear loader used for excavation, and a boom support frame having a double boom provided with an excavation bucket at its tip is pivotally mounted on a base on a self-propelled crawler. The present invention relates to a shear loader which is mounted on one side and which is used during excavation and which can be swiveled on the outside of a conveyor device by a boom support frame.

[0002]

2. Description of the Related Art As shown in FIGS. 3 and 4, a conventional shear loader has a base 2 provided 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 of the base 2 so as to be pivotally attached and straddle the front half of the conveyor 3. 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.
Thereafter, the boom 5 is moved from the cylinder 8 to the support bracket 6.
The front boom 9 is pivotally connected to the front end of the boom 5 by a cylinder 10 so as to be vertically swingable. Also before this boom 9
A bucket 11 is pivotally attached to the tip of the cylinder 11, and the bucket 11 can be swung up and down by a cylinder 13 via a link 12. In addition, the base 2
The operator's cab 1 is located on the side of the conveyor 3 pivotally attached to the
4, an engine drive hydraulic unit 15, a motor drive hydraulic unit 16, and the like are arranged. Reference numeral 17 denotes a take-off transport truck, and reference numeral 25 denotes a cable reel.

[0003] JP-2-12 5 has been drilled loader described in JP 030 is configured to pivot the rear end of the front boom equipped with cutter tip to the front end of the rear boom, the boom portion 10 Is movable horizontally and vertically around a fulcrum 30 of a support provided on the main body 1, provided with a movable trough between the front boom and the rear boom, and provided on a driven vehicle and a rear boom disposed on the front boom. An endless rotating chain scraper is provided over the driving vehicle arranged 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, which are straight, and the continuous extension shape. The excavated material can be transported backward by the upper running part of the endless rotating chain scraper running along the surface, the front boom is bent upward with respect to the rear boom, the upper running part of the endless rotating chain scraper, the front boom, and the rear Boom The excavating and transporting mechanism is provided on the vehicle body so that each transporting guide surface and the related position are along each side of the triangle when viewed from the side, and the movable trough is tilted downward so that the excavated material cannot be transported backward. In the excavator and loader described in this official gazette, the front boom is bent so that the upper running part of the chain scraper, the front boom, and the rear boom transfer guide surface are viewed from the side in a triangular shape. If the movable trough is tilted and it is not possible to transfer the excavated object to the transport guide surface of the front boom, even if there is no mining vehicle temporarily behind the excavator Excavation can be continued.

[0004]

However, the conventional shear loader shown in FIGS. 3 and 4 straddles the front half of the conveyor 3 pivotally attached to the center of the base 2 so as to be tiltable. The support bracket 6 of the rear boom 5 on the front of the base 2
Is fixed by the vertical pin 7, the portal-shaped boom support frame 4 is fixed,
When the rubbed sediment is loaded on the conveyor 3 and transported backward, if large gravels or uncrushed large lumps are mixed in the soil, these large lumps are supported by the portal boom. There is a problem that it cannot pass through the frame 4 and gets stuck on the boom support frame 4, so that the backward 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 the vertical pins 7, In some cases, even the gate-shaped boom support frame 4 was damaged, and there was a danger that the loading operation became impossible.

In such a state, when a large lump or the like is used as a conveyor, for example, a belt conveyor is used, the belt is rubbed to damage the belt, making the belt unusable. In the case of the conveyor, there is a disadvantage that the chain is broken and the earth and sand cannot be smoothly transported backward.

Further, the even Hei 2-12 5 030 No. excavating loader described in Japanese, the angle of the horizontal and vertical directions about the fulcrum 30 of the support boom section 10 is provided in the main body 1 Since the excavator is excavated by the cutter drum 7 and the sediment is loaded on the conveyor 5 by the chain scraper 16 and transported backward, the large gravels contained in the excavator can be displaced. Or uncrushed large lumps or the like are caught on the support provided on the main body 1, and there is a problem that the backward transfer of the earth and sand by the conveyer 5 cannot be carried out similarly to the conventional loading machine. damaged by microstrip loading work the fulcrum 30 of the boom section 10 provided there was a danger that becomes impossible.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and has a simple structure, and a boom support frame having a double boom provided with a drilling bucket at the tip is pivotally mounted on one side of a self-propelled crawler. The purpose of the present invention is to provide a slip-loading machine capable of rotating and retreating them to the outside of a conveyor device by installing them, and smoothly transferring sediment including large gravels and uncrushed large lumps to the rear. And

[0008]

The present invention SUMMARY OF] To achieve the above object, in tiltably conveyor device loaded shear loading machine base on self-propelled crawler, boom supported
A holding frame is provided on one side of the base with its base end as the center.
Converting mechanism be equipped pivotably in a horizontal direction, the twin boom having a bucket at the tip, the boom support off
Equipped pivotally horizontally the tip of frame, the
The tip of the boom support frame is above the conveyor device.
The position can be changed between the position and the upper position outside the conveyor device.
Is intended, characterized in that there is a, also the boom support frame, boom its proximal end is pivotally mounted on one side of the base by a vertical boom open pivot pin, is mounted on the base By driving the open cylinder , it is configured to be able to revolve and retract on the outside of the conveyor device together with a double boom having a drilling bucket at the tip, and a drilling bucket at the tip.
The twin boom equipped with a socket, is pivotally mounted by a bucket pivot pin to the distal end of the boom support frame pivotally configured in a horizontal direction by blanking over <br/> arm horizontally oscillating the cylinder
It is characterized by being.

[0009]

Next, the operation of the present invention will be described. The self-propelled crawler moves the shear loader to the excavation site, and the conveyor device on the base is tilted and arranged at a predetermined angle. It is pivoted horizontally to the boom open pivot pin around due to driving the boom open cylinder of the boom support frame equipped pivotally horizontally at one side <br/> Te,該Bu
Boom rotation center located at the end of the boom support frame
Bucket pivot pin, which is the center of the conveyor device on the base
Part Ru is positioned above. Next, the boom left / right swing cylinder
, A double boom provided with an excavation bucket at the tip is moved to a predetermined excavation position around the bucket pivot pin. In this way, the excavation bucket is moved to the excavation position, and then the excavation scraping operation is started. This excavation and scraping operation is performed by moving the excavation bucket up and down and left and right by a plurality of drive cylinders and boom left and right swing cylinders mounted on the two booms .
The excavated earth and sand is scraped by the excavating bucket to the tip of the inclined conveyor device, and is loaded by the conveyor device on the earth and sand transport truck arranged behind the conveyor device.

In the above-mentioned excavation loading operation, when large gravels or uncrushed large lumps are mixed in the excavated earth and sand,
The boom support cylinder is horizontally rotated by the boom open cylinder via a boom open rotation pin,
Since the boom support frame can be quickly swung and retracted to the upper outside of the conveyor device together with the two booms having the excavation bucket at the tip, even if the soil contains large gravel or uncrushed large lumps, etc. It can be smoothly transported backward by the conveyor device and loaded on a truck for transporting earth and sand.

[0011]

An embodiment according to 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 drawing, the same or equivalent parts as those of the conventional shear loader described above are denoted by the same reference numerals, and detailed description thereof will be omitted. In the present embodiment , FIG.
And a base 2 on the self-propelled crawler 1 as shown in FIG.
The provided, while pivotally conveyor 3 in the central portion of the base 2 tiltably, the side of the front half portion of the conveyor 3, the boom open pivot pin 18 provided upright on the base 2 in a vertical direction, A boom support frame 19 having a base projecting piece 20 protruding from the base thereof is pivotally mounted on the base so as to be pivotable in the horizontal direction.
You . And the base projecting piece 2 of this boom support frame 19
Between the base 0 and the base 2, a boom open cylinder 21 is provided.
It is interposed . Thereby, the boom support frame 19
Is driven by the boom open cylinder 21 to
Swivel around open swivel pin 18 and boom support frame
If the tip of the drum 19 is positioned above the center of the conveyor or
It faces the upper position outside the conveyor. On the other hand, the support bracket 22 for supporting a rear boom 5, the bucket pivot pin 23 to the distal end of the boom support frame 19 is rotatably pivoted in the horizontal direction and the rear boom 5, the boot
Connected to the camera support frame 19 via a horizontal shaft.
Then, between the support bracket 22 for supporting the boom 5 Thereafter the base protrusion 20 of the boom support frame 19
Is provided with a boom left / right swing cylinder 24 . This
As a result, the rear boom 5 moves the boom
Drive to rotate left and right around bucket pivot pin 23
To change the excavation position of the bucket in the horizontal direction.
is there.

Then, the rear boom 5 can swing vertically with respect to the support bracket 22 by the cylinder 8, and the front boom 9 can be vertically swingable by the cylinder 10 at the tip of the rear boom 5. Being pivoted. A bucket 11 is pivotally attached to the front end of the front boom 9,
Further, the bucket 11 can swing up and down by a cylinder 13 via a link 12.
Further, a cab 14, an engine drive hydraulic unit 15, a motor drive hydraulic unit 16, etc. are provided on the opposite base where the boom open pivot pin 18 is provided on the conveyor 3 pivotally attached to the base 2 so as to be tiltable. Is arranged. Reference numeral 17 denotes a take-off transport truck, and reference numeral 25 denotes a cable reel.

The operation of the present embodiment will be described. The self-propelled crawler 1 moves the shear loader of the present embodiment to an excavation site, and then moves the conveyor device 3 on the base 2 to a predetermined angle by a cylinder (not shown). Tilt and arrange. Thereafter, a boom support frame 19, which is pivotally mounted on a boom open pivot pin 18 erected in the vertical direction on the base 2 on the side of the first half of the conveyor 3, is driven by a boom open cylinder 21 so that the boom support frame 19 is moved. The front end portion is turned horizontally to the center of the conveyor 3, and the boom left / right swing cylinder 24 is driven to rotate the support bracket 22 of the rear boom 5 via the bucket turning pin 23, and the booms 5 and 9 are rotated. The excavation bucket 11 at the tip is moved and arranged at a predetermined excavation position. Thus, the excavation bucket 11 of this embodiment is moved to the excavation position, and then the excavation scraping operation is started. This excavation and scraping operation is performed by a plurality of drive cylinders 8, 10, 13 mounted on the booms 5, 9.
And the base projection 20 of the boom support frame 19 and the rear boom.
5 interposed between the support bracket 22 supporting the
The excavating bucket 11 is moved up and down, back and forth, and left and right by a horizontal swinging cylinder 24. And the earth and sand excavated by the excavation bucket 11 is inclined conveyor 3
And is placed behind it and loaded into the earth and sand transport truck 17

If large gravels or uncrushed large lumps are mixed in the excavated soil during the excavation loading operation, only the boom open cylinder 21 is driven.
And by the boom support frame 19, the boom open pivot pin 18 around the boom supporting a duplicate boom 5,9
Horizontally and quickly without rotating on the holding frame 19
Swivel and retreat above the outside of the conveyor 3 or necessary
According to the boom with the boom open cylinder 21
The left and right swing cylinder 24 is also driven, and the two booms 5,
9 on the boom support frame 19 to the right in this embodiment.
The boom support frame 19 is pivoted and retracted to the upper outside of the conveyor 3 while being pivoted and retracted, and large gravel and uncrushed large lump mixed with the earth and sand on the conveyor are safely transferred to the rear, and the sediment transport truck is used. Load.

Therefore, according to this embodiment, even when large gravels 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. Boom support frame 1 with booms 5 and 9
9 can be quickly turned and retracted to the upper outside of the conveyor 3. In this embodiment, the description has been made with the double boom. However, the boom is not limited to this, and the conveyor, the excavation bucket, and the like are not limited to those shown in the drawings as long as the boom is within the scope of the present invention. Absent.

[0016]

As described above, according to the present invention, the block
Arm support frame on one side of the base with its base end as the center.
To be able to turn freely in the horizontal direction
2 booms with milling buckets
At the front end of the frame, it is installed so that it can turn horizontally.
The top end of the robot support frame
And the position can be changed between the position and the upper position outside the conveyor device.
Because the, in shear excavation loading work, boom based on end or
The drilling bucket rotation axis is located above the conveyor device.
To improve the efficiency of work
If large gravels or uncrushed large lumps are mixed in the excavated soil , the boom support
By turning the lame, the boom support frame can be quickly and reliably retracted to the upper outside of the conveyor device with the double boom, so that even if the soil contains large gravels or uncrushed lumps, etc. Without any hindrance, it can be smoothly transported backward by the conveyor device and loaded on the earth and sand transport truck. Also, if necessary,
Double boom with excavation bucket
Can be rotated in the evacuation direction at the same time as the
Two boos located upstream of the flow of uncrushed large blocks
The system is rotated at a double speed toward the outside of the conveyor device,
Turn and retract faster and more reliably with the boom support frame
It can be done.

[Brief description of the 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]

 DESCRIPTION OF SYMBOLS 1 Self-propelled crawler 2 Base 3 Conveyor 5 Rear boom 8 Cylinder 9 Front boom 10 Cylinder 11 Excavation bucket 12 Link 13 Cylinder 17 Gravel transport truck 18 Boom open swivel 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

Continuation of front page (58) Field surveyed (Int.Cl. ⁷ , DB name) E02F 7/04

Claims (3)

(57) [Claims] 1. A self-propelled tiltably conveyor device loaded shear loader base on the crawler, the boom supported
A holding frame is provided on one side of the base with its base end as the center.
Converting mechanism be equipped pivotably in a horizontal direction, the twin boom having a bucket at the tip, the boom support off
Equipped pivotally horizontally the tip of frame, the
The tip of the boom support frame is above the conveyor device.
The position can be changed between the position and the upper position outside the conveyor device.
Shear loader, characterized in that there is a. 2. A boom support frame, a base end portion is pivotally mounted <br/> on one side of the base by the boom open pivot pin of vertical <br/> straight boom open mounted on the base It is configured to be able to revolve and retreat on the outside of the conveyor device together with a double boom equipped with a drilling bucket at the tip by driving the cylinder.
Shear loading machine according to claim 1, wherein the are. 3. A double boot having an excavation bucket at its tip.
Arm, said is pivoted by a bucket pivot pin to the distal end of the boom support frame, shear product according to claim 1, characterized by being configured to freely pivot in the horizontal direction by the boom left and right swing cylinder Machine.