JPH1037647A - Excavation device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To simplify excavation of a hole even in a place spaced away from a crane. SOLUTION: An excavation device 1 is provided at one end with an excavation head 43 and at the other end with a prime mover 42 to rotationally drive the excavation head 43. The excavation device comprises an excavator 41 having the excavation head 43 and the prime mover 42 coupled together through a rotary shaft 45, a guide member 9 to guide the excavator 41 axially of the rotary shaft 45, and a support bed 2 to oscillatively support the guide member 9. The guide member 9 comprises a lower guide part 39 to guide the excavation head 43 or the rotary shaft 45 axially of the rotary shaft 45, a slide guide part 15 to guide the prime mover 42 axially of the rotary shaft 45, and an upper stopper 11 to block separation of the prime mover 42 from the upper end of a slide guide part 15. When the lifting part for the excavator 41 is lifted, the excavator 41, the guide member 9, and the support bed 2 are lifted.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an excavator used for excavating a hole or the like.

[0002]

2. Description of the Related Art Conventionally, foundation piles and the like for constructing a foundation of a building such as a temporary bridge are formed by excavating a vertical hole and being buried in the vertical hole. This vertical hole is excavated by an excavator such as an auger device.

[0003]

However, the conventional auger device can excavate a hole near the crane to which the auger device is attached, but can excavate a hole at a position remote from the crane. Did not. Therefore, it has been difficult to dig a hole on an inclined surface, on a soft ground that cannot support a crane, or on a narrow site where a crane cannot access.

An object of the present invention is to solve the above-mentioned problems, and an object of the present invention is to provide an excavator capable of easily excavating a hole even in a place away from a crane.

[0005]

An excavator (1) according to the present invention.
Comprises a digging head (43) at one end and a motor (42) at the other end for rotationally driving the digging head,
A rotary shaft (45) connecting the excavation head and the motor
An excavator (41) connected to the excavator, a guide member (9) for guiding the excavator in the axial direction of the rotating shaft, and a support base (2) for swingably supporting the guide member. I have. The guide member is a lower guide (3) for guiding the excavation head or the rotating shaft in the axial direction of the rotating shaft.
9), a slide guide portion (15) for guiding the motor by sliding it in the axial direction of the rotary shaft, and an upper stopper (11) for preventing the motor from being detached from the upper end of the slide guide portion. . The excavator is provided with a lifting section (48), and when the lifting section is lifted, the excavator, the guide member, and the support are lifted.

In some cases, a plurality of slide guides are provided, and a support base is arranged below each slide guide.

In some cases, a swing positioning member (7) for positioning and fixing the swing position of the guide member with respect to the support table is provided.

An installation stopper (22) for preventing the prime mover sliding upward from moving downward.
May be provided.

[0009] In some cases, the grounding surface of the support base extends long.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, an embodiment of the excavator according to the present invention will be described with reference to FIGS. FIG.
FIG. 3 is an explanatory diagram for explaining a use state of the excavator according to the present invention. FIG. 2 is a schematic perspective view of the excavator. 3 (a) is a partially cutaway front view of the excavator, (b) is a bb sectional view of (a), and (c) is a cc sectional view of (a). FIG. 4 is a side view of the support base and the guide member. FIGS. 1 and 2 are schematic diagrams showing the positioning plate 7, the fixing plate 17 and the stopper pin 2.
2 and the like are not shown.

The support 2 of the excavator 1 is made of a long H-shaped steel, and a pair of right and left is provided. As shown in FIG. 4, a plurality of locking claws 3 protrude downward from both end sides of the support base 2, and a wire attachment part 4 is formed on the upper surface.
A hinge 6 is provided above the center member of the support 2,
A semi-circular positioning plate 7 is fixed around the hinge 6. The lower end of the gate-shaped guide member 9 is swingably attached to the support base 2 by the hinge 6. As shown in FIG. 3, the guide member 9 connects a pair of left and right guide posts 10 made of H-shaped steel, an upper connecting portion 11 that connects upper portions of the guide posts 10, and connects lower portions of the guide posts 10. And a lower connecting portion 12.

Each guide post 10 is formed with a guide groove 15 which is a slide guide for guiding the motor. Also,
As shown in FIGS. 3 and 4, an arc-shaped fixing plate 17 is attached to a lower portion of the guide support 10, and a nut 18 is fixed to the fixing plate 17 by welding or the like.
Then, a washer 20 is fitted to the bolt 19, and the bolt 1
9 is screwed into the nut 18, and the positioning plate 7, which is a swing positioning member, is held between the nut 18 and the bolt 19.
Then, the guide column 10 of the guide member 9 cannot swing with respect to the support 2, and the swing position of the guide member with respect to the support is determined. Thus, bolt 19
By screwing or loosening the, the swing positioning member including the positioning plate 7 can perform the positioning and release the positioning.

In FIG. 3, a hole is opened in one of the guide posts 10, that is, on the left side, and a stopper pin 22 is provided.
The tip penetrates this hole and is provided in the guide groove 15 so as to be freely retractable. The projecting spring 23, which is an urging means, constantly urges the stopper pin 22 in the direction in which the stopper pin 22 projects into the guide groove 15. On the other hand, the wedge 26 serving as the release member contacts the inclined surface 22a formed on the head of the stopper pin 22, and the release spring 28 serving as the urging means is connected to the wedge 26.
Is constantly biased upward. By the urging force of the release spring 28, the wedge 26 is inclined by the inclined surface 22a of the stopper pin 22.
To move the stopper pin 22 in the direction of retracting from the guide groove 15. Further, a release wire 31 is attached to the wedge 26 and the wedge 26
A hook portion 32 is fixedly provided to the guide column 10 below the lower end of the wire, and the end of the wire 31 can be locked to the hook portion 32.

In the center of the upper connecting portion 11, an opening 37 through which the hanging wire 36 is inserted is formed, while in the center of the lower connecting portion 12, a lower guide is provided. A cylindrical guide opening 39 which is a portion is formed.

An excavator 41 slidably mounted on the guide member 9 is provided with a prime mover 42 at the upper end and a drilling head 43 at the lower end, and rotates the drive shaft of the prime mover 42 and the excavation head 43. The shaft 45 is connected.

A slider 47 protrudes and is fixed to both right and left sides of a prime mover 42 such as a hydraulic motor or an electric motor. The end of this slider 47 is the guide post 1
0 and is slidable along the guide groove 15. A wire attaching portion 48 to which the suspending wire 36 is attached is provided on the upper surface of the prime mover 42, and functions as a suspending portion. The excavation head 43 has a large number of excavation claws 49. Further, a screw 51 is spirally formed around the side surface of the rotating shaft 45.

The prime mover 42 of the digging apparatus 1 thus configured drives the digging head 43 to rotate together with the rotary shaft 45, and the digging head 43 excavates the ground while rotating. The reaction force from the excavation head 43 generates a torque for rotating the prime mover 42, but the prime mover 42 is supported by the guide column 10 via the slider 47 and does not rotate.

The weight of the prime mover 42 is
As the excavating head 43 excavates and moves downward, the prime mover 42 also moves downward while sliding along the guide groove 15, that is, along the axis of the rotating shaft 45. The lower limit of the moving range of the prime mover 42 is the position where the slider 47 contacts the lower connecting portion 12 as the lower stopper, while the upper limit is the position where the slider 47 contacts the upper connecting portion 11 as the upper stopper. This is the contact position. In this way, the excavator 41
, The prime mover 42 is guided while the excavator 4
1 under the digging head 43 or the rotating shaft 4
Numeral 5 is guided by the guide opening 39 to prevent the excavating head 43 from swinging back and forth and right and left.

Further, the stopper pin 22 is
When is located at the substantially upper limit position, the downward movement of the slider 47 can be prevented. This stopper pin 22
As described above, is always urged by the projecting spring 23 in the direction of protruding into the guide groove 15, and is always urged by the release spring 28 in the direction of retracting from the guide groove 15. The force for retracting the stopper pin 22 by the release spring 28 is applied to the stopper pin 22 by the projection spring 23.
When the other force does not act, the tip of the stopper pin 22 is retracted from the guide groove 15. This retracted stopper pin 22
When projecting the tip of the wire into the guide groove 15, the wire 31 attached to the wedge 26 is pulled. Then, the wedge 26 moves downward against the release spring 28, and accordingly, the stopper pin 22 moves rightward, that is, in the projecting direction by the urging force of the projecting spring 23. When the stopper pin 22 is maintained in a protruding state, the other end of the wire 31 is hooked on the hook portion 32 and fixed. In this manner, the stopper pin 22 serving as the installation stopper has its tip protruding into the guide groove 15 and is prevented from moving downward of the prime mover 42, and is retracted from the guide groove 15 so as to move downwardly of the prime mover 42. Can be moved to and from an allowable position that allows the movement of the object.

When the excavator 1 is installed, the suspension wire 36 is wound up by the crane 61, and the excavator 41 is pulled up. Then, the excavator 41 moves upward with respect to the guide member 9, and the slider 47 comes into contact with the upper connecting portion 11. Further, when the suspension wire 36 is wound up, the guide member 9 and the support base 2 are suspended together with the excavator 41. In this state, the wire 31 is pulled downward, and the tip of the stopper pin 22 is connected to the guide groove 1.
5 and the lower end of the wire 31 is fixed to the hook 32.

Next, as shown in FIG. 1, the excavator 1 is moved to the excavation position, and the suspension wire 36 is loosened. Then, the excavator 1 moves downward, and the support 2 is grounded. Then, the support base 2 and the guide member 9 stop moving downward, but the excavator 41 continues to move downward. Thereafter, the slider 47 of the excavator 41 comes into contact with the stopper pin 22 which is a stopper for installation, and the downward movement of the excavator 41 stops, and the weight of the excavator 41, particularly the load of the prime mover 42, Joining stand 2
The support 2, especially the locking claw 3, can bite into the ground firmly. The grounding surface of the support base 2 is long and can be engaged with the ground over a wide range, so that the torque when the prime mover 42 operates can be reliably supported. In this way, the excavator 1 can be reliably installed at the excavation position. In addition, a stake 66 or the like is struck on the ground, and a wire 67 is stretched between the stake 66 and the wire mounting part 4 of the support 2 to prevent the grounded support 2 from moving.

Since the guide member 9 can swing with respect to the support table 2, the support table 2 becomes parallel to the inclination of the ground, and the guide member 9 pulls the hanging wire 36 by the crane 61. Therefore, they are arranged substantially perpendicular to the horizontal plane. Therefore, the angle between the support 2 and the guide member 9 is an angle other than a right angle as shown in FIG.
Then, the bolt 19 is screwed into the nut 18, and the positioning plate 7 is pressed and fixed, and the swing angle of the guide member 9 with respect to the support base 2 is determined.

When the wire 31 is removed from the hook 32,
The wedge 26 is moved upward by the urging force of the release spring 28, and the stopper pin 22 is retracted from the guide groove 15.
Next, the prime mover 42 is operated, and the rotary shaft 45 and the excavation head 43 are rotationally driven to start excavation. Then, a hole is excavated in the direction in which the guide groove 15 extends, that is, in the direction of the axis of the rotating shaft 45. After excavation, crane 6
The lifting wire 36 is lifted by 1 to lift the excavator 1 and move the excavator 1 to another location. Also,
A vertical pile is embedded in the drilled hole.

The embodiments of the present invention have been described above in detail.
The present invention is not limited to the above embodiment,
Within the gist of the present invention described in the claims,
Various changes can be made. Modification examples of the present invention are exemplified below. (1) In the embodiment, the excavator 1 excavates an inclined surface, but it is also possible to excavate a substantially horizontal ground.

(2) In the embodiment, one stopper pin 22 as an installation stopper is provided, but a plurality of stopper pins may be provided. In addition, if the prime mover 42 sliding upward can be prevented from moving downward, the arrangement and structure of the installation stopper can be changed as appropriate. (3) In the embodiment, the screw 51 is provided on the rotary shaft 45, but the screw 51 is not necessarily provided.

(4) In the embodiment, the slide guide portion is the guide groove 15, but another guide structure such as a ridge may be used.

[0027]

According to the present invention, an excavator includes an excavator, a guide member for guiding the excavator, and a support base for swingably supporting the guide member. Since the excavator, the guide member, and the support, that is, the excavator can be lifted by lifting the hoisting portion of the machine, the excavator can be lifted by a crane or the like, installed at a predetermined position, and excavated. And conventionally,
The excavator was attached to a crane etc. and could not excavate the ground away from the crane, but since the excavator is separate from the crane etc., it can excavate the ground away from the crane . Since the guide member is swingably supported by the support table, it can be excavated substantially perpendicularly to the horizontal plane even on an inclined surface.

In the case where a plurality of slide guides are provided and a support is arranged below each slide guide, the excavator may be provided with a plurality of slide guides.
The slide can be performed while being reliably positioned, and the excavator can excavate stably without wobbling. In addition, since the support bases are provided below the slide guides, the slide guides can be stably supported by the support bases even if the inclination angle of the inclined surface differs depending on the location.

Further, when a swing positioning member capable of positioning and fixing the swing position of the guide member with respect to the support table is provided, the swing position is fixed. Wobble is reduced.

In the case where an installation stopper for preventing the prime mover sliding upward from moving downward is provided, a load of the prime mover is applied to the support base via the installation stopper at the time of installation. Therefore, the support base can be securely cut into the ground and fixed.

When the grounding surface of the support base extends long, even if a rotational torque is applied from the motor to the support base, the grounding surface of the support base extends long, so that the rotational torque is increased. Can be reliably supported.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram for explaining a use state of an excavator according to the present invention.

FIG. 2 is a schematic perspective view of a drilling rig.

3A and 3B are explanatory views of the excavator, in which (a) is a partially cutaway front view of the excavator, (b) is a bb cross-sectional view of (a),
(C) is a cc sectional view of (a).

FIG. 4 is a side view of a support base and a guide member.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 excavator 2 support base 7 positioning plate (swing positioning member) 9 guide member 11 upper connecting portion (upper stopper) 15 guide groove (slide guide portion) 22 stopper pin (installation stopper) 39 guide opening (lower guide) Part) 41 excavator 42 prime mover 43 excavation head 45 rotating shaft 48 wire attachment part (lifting part)

Claims (5)

[Claims] 1. An excavator having a digging head at one end and a motor for rotating the digging head at the other end, and a rotary shaft connecting the digging head and the motor. A guide member for guiding the excavator in the axial direction of the rotary shaft; and a support base for swingably supporting the guide member. A lower guide portion for guiding the motor in the axial direction of the rotary shaft, a slide guide portion for guiding the motor by sliding in the axial direction of the rotary shaft, and an upper stopper for preventing the motor from being detached from the upper end of the slide guide portion. In addition, the excavator is provided with a lifting unit, and when the lifting unit is lifted, the excavator, the guide member, and the support are lifted. Location. 2. The excavator according to claim 1, wherein a plurality of the slide guides are provided, and a support is arranged below each slide guide. 3. The excavator according to claim 1, further comprising a swing positioning member capable of positioning and fixing a swing position of the guide member with respect to the support table. 4. The excavator according to claim 1, further comprising an installation stopper for preventing the prime mover sliding upward from moving downward. 5. The excavator according to claim 1, wherein the grounding surface of the support base extends long.