JPH05176639A - Digger - Google Patents

Abstract

PURPOSE:To provide a digger ensured to make no shaking motion in its with direction and move with supporting the center of its root pot by arranging a digging blade and its supporting frame in specific manners respectively. CONSTITUTION:A digging blade 8 and a frame 9 supporting its front end are arranged so as to be located at the diagonal positions to an engine 2 set biasedly toward one traveling part 3a side from the truck centerline P-P. A digging blade is revolved starting from the waiting position as shown in the figure, initiating a digging operation.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a digging machine for digging a seedling or the like into a root pot with a digging blade that digs in a scooping manner while vibrating.

[0002]

2. Description of the Related Art A semi-circular arc-shaped excavating blade is mounted on an elevating frame mounted on the front of a walk-control type self-propelled vehicle, and the excavating blade is used to drive the width of the vehicle body. A digging machine is known in which a seedling or the like is dug into a root pot by rotating while oscillating in a direction orthogonal to the direction center line (see, for example, Japanese Utility Model Laid-Open No. 58-26848).

[0003]

By the way, a conventional digging machine is constituted by a digging blade projecting forward from a self-propelled vehicle of a four-wheel traveling type. There is a tendency for the rear part of the machine body to float up when digging into the root part by biting into the inside, and the digging ability may decline, so in order to prevent it, attach heavy objects such as batteries and oil tanks to the rear end of the vehicle body. It is installed to prevent the rear part of the machine body from rising. Therefore, the conventional mining machine is disadvantageous both during work and during normal operation because the vehicle body becomes long in the front and rear and a large operating space is required when turning the vehicle, and further, the front and rear balance of the entire machine is maintained. Although consideration was given, the left-right balance was not considered specially, so the excavation blade was swung in the machine width direction while being rotated, and the machine could easily shake sideways due to the reaction force when excavating. There is a problem that the excavation ability is likely to deteriorate, and that the seedlings cannot be stably supported even when the root pots of dug up seedlings or the like are moved on the excavating blade. .. The present invention has been made for the purpose of solving the above problems in the conventional excavator.

[0004]

That is, the digging machine according to the present invention comprises a digging blade (8) having a substantially semi-arcuate shape, which is mounted on the front part of a walking control type vehicle body (A). 5) In the excavator for excavating a seedling or the like with a root pot by vibrating in a direction orthogonal to the vehicle body center line (P-P), pivoting the excavating blade (8). A frame (9) having a substantially arcuate shape in a plan view that supports the front end side of the excavating blade (8) with its center aligned with the vehicle body center line (P-P),
One track running part (3) from the vehicle body center line (P-P)
The excavation blade (8) which is arranged in a diagonal position of the engine (2) biased toward the side a) and is in a standby position before the start of excavation.
Is located along the frame (9) and starts to rotate from its standby position.

[0005]

In the mining machine of the present invention, the substantially arcuate frame (9) for supporting the front end portion of the mining blade (8) and the mining position supported by the frame in the standby position. An engine (2) in which the blade (8) and the blade center line (P-P) are arranged closer to one crawler belt running portion (3a) side.
Since it is placed diagonally to the left and right, the left and right balance of the entire machine is maintained, so it is possible to drive in a straight line in normal operation, and the excavation blade is excavated while operating the machine. It is possible to easily and conveniently perform the operation of matching the roots of the seedlings to be collected.

Further, when the root portion of a sapling or the like is dug up with a rooting pot by the digging blade (8), the self-propelled vehicle body is firmly supported by the crawler belt traveling portion, and the vehicle body center line (P Vibration and excavation reaction force caused by the excavation blade (8) starting to rotate about -P) as a center line of the vehicle body (P-
P) is caught by the weight of the engine (2) located on the opposite side, and the excavator is not shaken in the width direction so that the excavation capacity is improved and good excavation work can be performed.
The saplings can be carried after excavation while the center of the root pot is stably supported by the excavation blade whose rotation center coincides with the center line of the vehicle body.

[0007]

Embodiments of the present invention will now be described with reference to the drawings. FIG. 1 is an overall side view of the excavator according to the present invention, and FIG. 2 is an overall plan view of the excavator. The excavator shown is composed of a self-propelled vehicle (A) and a self-propelled vehicle (A). It is composed of an elevating frame body (B) that is attached to the front part so as to be able to ascend and descend with respect to the self-propelled vehicle body.

The self-propelled vehicle body (A) has a pair of left and right crawler track running portions (3a) and (3b) which support the machine base (1) and a traveling mission (3) which is linked to an engine (2) mounted on the machine chassis (1). 4)
And a mounting portion (10) (10) for rotatably supporting the elevating frame body (B) in the vertical direction is provided in the front part of the machine base (1).

The engine (2) is mounted on the machine base (1) such that one crawler belt running portion (3a) is biased to the centerline (PP) of the self-propelled vehicle body (A). Its output shaft (14)
The other track running portion (3b) is projected to the alligator. Then, a transmission unit (6) for interlockingly connecting the output shaft (14) and the traveling mission (4), and interlocking between the output shaft (14) and an input shaft of a digging drive unit (5) described later. The connecting transmission part (7) is provided closer to the other crawler track running part (3b) than the vehicle body center line (P-P).

Further, a necessary mechanism such as a hydraulic cylinder (11) and a hydraulic tank (12) for moving up and down the elevating frame (B) is arranged on the machine base (1). (12) is disposed on the side of the engine on the same side as the transmission parts (6) and (7), and has a hydraulic cylinder (11).
Is a hydraulic tank (1
It is arranged in the front part of the machine base facing 2) (see FIG. 2).
In addition, from the rear part of the machine base (1), a walking control handle (1
3) is extended.

On the other hand, in the elevating frame body (B), the mounting arms (16) and (16) provided on the rear surface of the support frame (15) to which the excavation drive section (5) is mounted are attached to the mounting section (10) ( 10)
The piston rods of the hydraulic cylinders (11) are connected to the mounting portions (17) provided on the machine base (1) by being rotatably mounted on the machine base (1) respectively, and mounted on the rear surface of the support frame (15). Is composed of.

The excavation drive unit (5) has a rear end portion as an input unit (1
8) is input from one crawler track running part (3b) near the vehicle body center line (P-P), and a vibration imparting mechanism (19) is connected to the front part of the crawler track running part (3b). The output part (20) is provided in the front part, and the input part (1
The input shaft (21) of 8) is the mounting arm (16) (16).
It is provided so that its axis coincides with the axis of rotation (Q-Q), and is linked to the output shaft of the engine by the transmission section (7).

The output shaft (22) of the output unit (20)
Is projected forward such that its axis coincides with a line extending the vehicle body center line (P-P) forward. Output shaft (2
The rear base end of the excavation blade (8) is interlockingly supported by the excavation blade (8), and the excavation blade (8) is formed in a substantially semi-circular shape in plan view as seen in FIG. Has been
A pivot portion (23) whose center is located on the extension line of the axis of the output shaft (22) is provided at the tip end portion, and rotation of the output shaft (22) makes it possible to rotate the output shaft (22) with respect to the vehicle body center line (P-P). It is provided so as to rotate in a scooping manner in a direction orthogonal to each other.

Further, the digging blade (8) is formed to have an appropriate width in the rotating direction and has an arc-shaped cross section, and is formed by providing a blade portion (24) on the rotating front edge. It The pivoting portion (23) on the tip side of the excavating blade (8) is supported by a frame (9) extending from the support frame (15), and the frame (9) includes the transmission portion (6) ( 7) The base portion is attached to the side surface portion of the support frame (15) located at the installation side, and the forward extending portion is curved so as to follow the semi-arc shape of the excavating blade (8) in a plan view. , The supporting portion (2
5), the pivotally attached portion (23) at the tip of the excavating blade is rotatably supported.

Next, an operation mode of the excavator constructed as above will be described. When the excavation is not performed, the excavation blade (8) is stopped at a standby position along the frame (9) as shown in FIG. 2, and the lifting frame (B) is entirely hydraulic cylinder (11). Is raised around the rotation axis (Q-Q). Therefore, during normal operation of the digging machine in a non-working posture, the digging blade in the standby position, the frame supporting the digging blade, and the engine in which one crawler track running portion (3a) is arranged near the crocodile. Since the vehicle is in a diagonal position, the left and right balance of the entire machine is maintained, and the excavating blade can be easily adapted to the trunk of the seedling or the like to be excavated while operating with good straightness and turning.

Then, after adapting the excavation blade (8) to the trunk of the seedling or the like to be excavated, the self-propelled vehicle body is stopped and the excavation drive section (5) is actuated to move the lifting frame ( The digging blade (8) vibrates when B) is lowered and the blade portion (24)
While cutting into the soil from the ground, it is rotated by the output shaft (22) to cut through the soil, and the self-propelled vehicle (A) moves to the track running part (3
Since a) and (3b) are firmly supported in the front-rear direction, the root portion of the sapling or the like is accurately excavated without lifting the rear portion of the vehicle body, and is cut into a substantially semicircular rooted state.

After the cutting of the root portion is completed, when the digging blade (8) is returned to the lower side of the root pot portion, the center portion of the root pot of the sapling is placed on the digging blade (8) and moved up and down. The seedlings with root pots are lifted by the rise of the frame (B), and the self-propelled vehicle (A) is appropriately moved forward and backward while maintaining the lifted state, whereby the dug up seedlings can be carried to another place. Of.

When a seedling or the like is dug up in the above-described manner, the load due to vibration and excavation is applied in the width direction of the vehicle body. Since the engine (2) is arranged on the opposite side of (PP) and receives the load reaction force due to vibration and excavation in a well-balanced manner, the machine can satisfactorily excavate without wobbling in the width direction.

[Brief description of drawings]

1 is an overall side view of a digging machine according to the present invention.

FIG. 2 is an overall plan view of the excavator according to the present invention.

[Explanation of symbols]

 2 ... Engine 3a, 3b ... Crawler track running part 5 ... Digging drive part 8 ... Digging blade 9 ... Frame A ... Walk-maneuvering self-propelled vehicle P-P ...・ Vehicle center line

Claims (1)

[Claims] 1. A digging drive section (5) is provided with a digging blade (8) having a substantially semi-arcuate shape, which is mounted on the front part of a walking control type vehicle body (A).
Therefore, in a digging machine for digging a seedling or the like with a root pot by vibrating in a direction orthogonal to the vehicle body center line (P-P), the rotation center of the digging blade (8) is A frame (9) having a substantially arcuate shape in a plan view, which matches the vehicle body center line (P-P) and supports the front end side of the excavation blade (8).
Is arranged at a diagonal position of the engine (2) mounted near the crawler belt running portion (3a) side from the vehicle body center line (PP), and the standby posture before the start of digging is set. A digging machine characterized in that the digging blade (8) is located along the frame (9) and starts to rotate from its standby position.