JP5075697B2 - Excavator - Google Patents

Description

  The present invention relates to an excavator for excavating the ground.

There is an excavator that excavates the ground by pressing a rod formed with a screw into a natural ground while rotating it along a leader standing on the ground.
The rod of this excavator is supported at two upper and lower points of the upper end fixed to the motor and the through hole of the anti-vibration device fixed to the lower part of the leader, so that blurring due to drilling is suppressed. It was.

  However, since the through-hole has a larger diameter than the outer diameter of the screw so that the rotation of the screw does not hinder the rotation of the excavator, the gap between the through-hole and the screw is not increased. There was a case where the rod was shaken by the amount of the formed gap (play). The blur generated in the lower part of the leader increases as the excavation depth increases.

  Also, when the ground to be excavated is hard, etc., the rod may bend in the section between the anti-vibration device and the motor. In such a case, there is no blurring in the anti-vibration device. Even in this case, the excavation hole may be formed obliquely.

Therefore, in Patent Document 1, for the purpose of suppressing the blurring of the rod of the excavator, a bearing that allows the reader to pass through the rod is provided separately from the second anti-vibration member fixed to the lower portion of the reader. An excavator provided with a first bracing member configured to descend with its own weight along a leader as it descends is disclosed. In this excavator, the stopper is fixed to the rod, and the first swinging member that descends by its own weight stops at the position of the stopper.
Then, after the stopper passes through the second anti-vibration member fixed to the lower end of the reader, the first anti-vibration member is mounted on the upper surface of the second anti-vibration member, and only the rod is lowered.
JP 11-256971 A

  However, since the excavator described in Patent Document 1 remains in that position after the first bracing member reaches the second bracing member, the rod constituent member is added to extend the length of the rod. Does not function as a steadying member. Therefore, when the excavation depth is deep, the construction quality may be deteriorated.

  The present invention has been made to solve the above-described problems, and it is an object of the present invention to propose an excavator capable of drilling with high accuracy regardless of the excavation depth by a simple configuration. And

In order to solve such a problem, the excavator of the present invention comprises a leader, a driving means attached so as to be movable along the leader, and a plurality of rod constituent members connected in the axial direction. A rod that moves together with the driving means, a connecting member that connects the rod constituent members in the axial direction, a lower swinging means fixed to the lower part of the reader, and a space between the lower shaking means and the driving means An excavator comprising an intermediate anti-vibration means arranged on the outer pipe , wherein the connecting member is constituted by an outer pipe and an inner pipe rotatably held in the inner space of the outer pipe, and the drive Means includes gripping means for slidably gripping the reader, and the intermediate anti-vibration means includes a reader gripping part for slidably gripping the reader, and an attachment part fixed to the outer tube. The reader gripping part Is characterized in that said attachment portion is connected detachably.

  Further, the excavator may include a plurality of the intermediate bracing devices.

  According to such an excavator, since the intermediate anti-shake device is provided between the anti-shock device and the motor, the deflection of the rod is suppressed and the construction can be performed with high quality. And since this intermediate bracing apparatus is being integrally fixed to the connection member which connects a rod steel member, the blurring of the rod in the position of an intermediate bracing apparatus does not arise.

Further, since the intermediate bracing device is detachably connected to the connecting member of the rod, even when the excavation depth is deep, the position of the intermediate bracing device can be appropriately moved, or a plurality of intermediate bracing devices can be used. High quality construction is possible by installing.
Even if a plurality of intermediate bracing devices are arranged, by removing the lower intermediate bracing device, the lower intermediate bracing device does not interfere with the upper intermediate bracing device, There is no hindrance to drilling.

The excavator includes a leader, a driving means attached so as to be movable along the leader, a plurality of rod constituent members connected in the axial direction, a rod that moves together with the driving means, and the rod constituent members A connecting member for connecting them together in the axial direction, a lower bracing means fixed to the lower part of the reader, and an intermediate bracing means disposed above the lower bracing means, The intermediate swinging means has a reader gripping part for gripping the reader in a slidable manner and an attachment part fixed to the connecting member, and the reader gripping part and the attachment part are detachably connected. In addition, the excavator may be configured such that a plurality of the rods are arranged side by side, and the connecting member bundles the plurality of rods.

  Furthermore, if the reader gripping part and the attachment part are connected via a connecting pin, the intermediate anti-rest device can be easily attached and detached.

  According to the excavator according to the present invention, it is possible to perform drilling with high accuracy regardless of the excavation depth with a simple configuration.

  DESCRIPTION OF EMBODIMENTS Preferred embodiments of the present invention will be described in detail with reference to the drawings. In the following description, the same reference numerals are used for the same elements, and duplicate descriptions are omitted.

  As shown in FIGS. 1A and 1B, the excavator M according to the present embodiment includes a leader 1, a drive unit 2 that is movably attached along the leader 1, and a plurality of rod constituent members. Are connected in the axial direction, the rod 3 moves together with the driving means 2, the connecting member 4 that connects the rod constituent members 31 in the axial direction, and the lower vibration fixed to the lower part of the reader 1. The holding means 5 and the intermediate shaking means 6 disposed above the lower shaking means 5 are provided.

The reader 1 guides the rod 3 (driving means 2), and is erected via a base machine 7.
As shown in FIGS. 1A and 1B, the leader 1 has a lower end fixed by a fixture 70 disposed at the front portion of the base machine 7, and 2 extended from the base machine 7. The upper part is fixed by the arms 71, 71.

  The reader 1 has an inclination angle with respect to the ground surface by expansion and contraction of the two arms 71 and 71 of the base machine 7. In the present embodiment, the reader 1 is erected vertically with respect to the ground surface.

As shown in FIG. 2A, the reader 1 includes a main body portion 10 made of a steel pipe and a rail portion 11 formed on the side surface of the main body portion 10 along the longitudinal direction of the main body portion 10.
As shown in FIGS. 1A and 1B, the leader 1 includes a pulley 12 at the upper end, and guides a wire rope 72 extending from the base machine 7 to the driving means 2.
The pulley 12 is configured to be able to suspend the driving means 2 by the wire rope 72 by being rotatably held at a position protruding forward from the leader 1 at the upper end of the leader 1.

  Here, in this embodiment, the main body 10 uses the reader 1 having a circular cross section, but the cross sectional shape of the reader 1 is not limited. Further, the side surface of the main body 10 of the reader 1 may be used as a rail, and the configuration of the reader 1 is not limited. Further, the length and thickness of the reader 1 may be appropriately set according to the excavation depth, the scale of the driving means 2, and the like.

  The driving means 2 includes a motor that applies a rotational force to the rod 3, and is a wire extending from the base machine 7 via a pulley 12 at the upper end of the reader 1, as shown in FIG. It is suspended by a rope 72.

The driving means 2 includes gripping means 21, and the gripping means 21 grips the rail 11 of the reader 1 so as to be slidable.
The drive means 2 has a pulley 22 on the upper surface, and a wire rope 72 extended from the base machine 7 is slidably locked to the pulley 22. And the drive means 2 moves up and down along the reader 1 by expanding and contracting the wire rope 72 (see FIG. 3).

Connection means 23, 23, 23 project from the lower end of the driving means 2, and are configured to be connectable with the rod 3.
When the driving means 2 is actuated, a rotational force is applied to the connecting portion 23 and the rod 3 connected to the connecting portion 23 rotates.

  In addition, in this embodiment, although the three connection parts 23 shall be provided, the number of the connection parts 23 is not limited, It is possible to set suitably according to the number etc. of the rod 3. Further, the drive format and scale of the drive means 2 are not limited and can be set as appropriate.

  As shown in FIGS. 1A and 1B, the rod 3 is configured by connecting a plurality of rod constituent members 31, 31,... In the axial direction (vertical direction in the drawing) via the connecting member 4. Has been. The excavator M according to the present embodiment includes three rods 3.

The rod constituent member 31 is made of a steel pipe, and the rod constituent member 31 ′ disposed at the lower part of the rod 3 has a screw on the outer peripheral surface.
A cutter 32 is fixed to the lower end of the rod 3.

  As shown in FIGS. 2A and 2B, the connecting member 4 connects rod constituent members 31 in the axial direction and bundles three rods 3, 3, 3 arranged side by side.

  As shown in FIG. 2 (a), the connecting member 4 includes three shaft connecting portions 40, 40, 40 each formed by a double pipe of an outer pipe 41 and an inner pipe 42, and the outer pipes 41 in the lateral direction. It is comprised by the horizontal connection part 43 connected by.

Adjacent shaft coupling portions 40 (outer pipes 41) are bundled by being fixed by a lateral coupling portion 43.
The outer tube 41 of the shaft coupling portion 40, 40, which is disposed at both ends of the coupling member 4 and to which the intermediate anti-vibration member 6 is attached, has an attachment portion 61 of the intermediate anti-vibration member 6 on the surface (outer peripheral surface) on the reader 1 side. Are fixed together.

  The inner tube 42 is rotatably held in the inner space of the outer tube 41. Rod constituent members 31, 31 arranged above and below the connecting member 4 are fixed to the inner tube 42. As a result, the power of the driving means 2 transmitted from the upper rod constituent member 31 of the connecting member 4 is transmitted to the lower rod constituent member 31 via the inner tube 42.

As shown in FIG. 2 (b), the lateral connecting portion 43 is made of a steel plate having a rectangular cross section, and a rectangular auxiliary plate 45 is fixed to the middle portion of both side surfaces. The auxiliary plate 45 reinforces the lateral connecting portion 43 by bending and also reinforces the joint portion between the lateral connecting portion 43 and the shaft connecting portion 40.
In addition, the structure of the connection member 4 is not limited to the said structure, It is possible to set suitably. For example, when the excavator M is a single shaft, the horizontal connecting portion 43 is omitted.

As shown in FIGS. 1 (a) and 1 (b), the lower swinging means 5 suppresses blurring of the rods 3, 3, 3 and is fixed to the lower part of the reader 1.
The lower rocking means 5 includes a main body portion 50 that rotatably holds the rod 3 and a grip portion 51 that fixes the main body portion 50 to the reader 1.

  As shown in FIGS. 1A and 1B, the intermediate steadying means 6 suppresses the blurring of the rod 3 by connecting the reader 1 and the connecting means 4 above the lower steadying means 5.

As shown in FIG. 2, the intermediate steadying means 6 includes a reader grip 60 that slidably grips the rail portion 11 of the reader 1, and a mounting portion 61 that is fixed to the connecting member 4.
The reader grip 60 and the attachment 61 are detachably connected via a connection pin 62.

The mounting portion 61 is a steel plate that is integrally fixed to the outer pipes 42 at both ends of the connecting member 4 that fixes the intermediate anti-vibration member 6 by welding or the like, and the connecting pin 62 is inserted into the tip portion on the reader 1 side. Possible pin insertion holes are formed.
The plurality of attachment portions 61 attached to one connection member 4 are provided at the same height and are parallel to each other. The protruding length of the attachment portion 61 from the connecting member 4 is formed such that the tip is located inside the outer edge of the screw of the rod 3.

As shown in FIG. 2A, the reader grip 60 grips the rail portion 11 from the left and right (up and down in FIG. 2A) and also latches in the front and rear (left and right in FIG. 2A). A grip body 63 is provided.
In the reader gripping portion 60, the rod 3 suppresses front / back / left / right blurring by the gripping portion main body 63.

The reader grip 60 includes a steel frame 64 that is U-shaped in plan view (see FIG. 2A). The grip portion main body 63 is fixed to a steel frame 64.
The steel frame 64 includes an arm part 64a that is detachably connected to the attachment part 61, and a connecting plate 64b that connects the arm parts 64a to each other. Although the fixing method of the arm part 64a and the connecting plate 64b is not limited, in this embodiment, it fixes integrally by welding.

  As shown in FIG. 2A, a U-shaped accommodation portion 64c capable of accommodating the distal end of the attachment portion 61 is provided at the rod end of the arm portion 64a (steel frame 64). The accommodation portion 64c has a pin insertion hole (not shown). In this embodiment, the steel frame 64 is provided with a pair of arm portions 64a. However, the number of the arm portions 64a is not limited and can be set as appropriate.

  The pin insertion hole formed in the steel frame 64 and the pin insertion hole formed in the attachment portion 61 are formed so as to coincide with each other in a state where the distal end portion of the attachment portion 61 is accommodated in the accommodation portion 64c of the steel frame 64. ing.

The connecting pin 62 is inserted into the pin insertion hole from one direction in a state where the distal end portion of the attachment portion 61 is accommodated in the accommodation portion 64c of the steel frame 64, whereby the arm portion 64a and the attachment portion of the reader gripping portion 60 are provided. 61 is connected.
The connecting pin 62 collectively connects the connecting portions of the mounting portion 61 and the arm portion 64a (the tip of the mounting portion 61 and the receiving portion 64c) at a plurality of locations, and at least the width of the steel frame 64 (see FIG. 2 (a) is a steel rod longer than the length in the vertical direction), and has a threaded portion 62a threaded on one end.

  The length of the connecting pin 62 is adjusted by a nut 65 screwed into the screw portion 62 in a state where the pin insertion hole is penetrated. Further, a split pin 66 for fixing the nut 65 is fixed to the connecting pin 62.

  As shown in FIG. 1, the excavator 1 excavates the ground by lowering the rod 3 having a cutter 32 at the lower end and a screw at the lower portion while rotating the rod 3 by the power of the driving means 2. At this time, the rod 3 is fixed to the driving means 2 whose upper end moves along the reader 1, and the lower part is held by the lower swinging means 5 fixed to the lower end of the reader 1, and the lower swinging means 5 is held by intermediate anti-vibration means 6 above.

  When the rod 3 is lowered along with the excavation, the intermediate swinging means 6 is also lowered. Then, as shown in FIG. 3A, when the intermediate steadying means 6 approaches the lower steadying means 5, the connecting pin 62 of the intermediate steadying means 6 is removed by pulling it out from one side, and the reader gripping part 60 is removed. And the mounting portion 61 are separated. And after removing the leader holding | grip part 60, the rod 3 is further lowered | hung and excavation is advanced.

At this time, since the distance between the driving means 2 and the lower swinging means 5 is short, no blurring or deflection of the rod 3 that affects the quality of construction occurs during this interval.
Since the attachment portion 61 fixed to the connecting member 4 is shorter than the radius of the screw of the rod 3, the connecting member 4 to which the intermediate anti-vibration member 6 is fixed is inserted through the lower anti-vibration means 5. It is possible to descend.

In the case where the excavation depth is deep, when the rod steel member 31 is added to extend the length of the rod 3, the driving means 2 is connected to the lower swinging means 5 as shown in FIGS. The drive means 2 and the rod 3 are separated at a time point when it is lowered to the vicinity of
And the drive means 2 is raised, the rod steel member 31 is arranged between the upper end of the existing rod 3 and the drive means 2, and the intermediate swinging means 6 is arranged.

  If the extension of the rod 3 is long, a plurality of intermediate anti-vibration means 6 may be arranged vertically as shown in FIG.

  As described above, according to the excavator M of the present embodiment, the rod 3 is fixed to the driving means 2 whose upper end moves along the reader 1, and the lower swinging means 5 whose lower part is fixed to the lower end of the reader 1. Since it is held and held by the intermediate anti-vibration means 6 above the lower anti-vibration means 5, it is possible to prevent back-and-forth and left-right blurring.

Further, since the intermediate swinging means 6 is disposed between the upper end of the rod 3 and the lower swinging means 5, the rod 3 is prevented from being bent in this section.
Therefore, it becomes possible to perform the creation with high quality

  Further, since the intermediate anti-vibration means 6 is connected to the rod 3 via the connecting pin 62, it can be easily attached and detached. Therefore, even when excavation by the excavator M progresses and the intermediate anti-vibration means 6 is removed, it can be removed in a short time without affecting the progress of the excavation work. Further, even when the rod constituent member 31 is added to extend the length of the rod 3, the intermediate anti-rest means 6 can be easily attached. There is no impact.

Further, the intermediate swinging means 6 has a simple configuration and can be easily applied to an existing excavator, so that it does not require a significant change of the excavator and is economical.
Further, since the connecting pin 6 can be attached / detached from one side, the work platform only needs to be installed on one side of the reader, which is economical and excellent in workability.

As mentioned above, although preferred embodiment was described about this invention, this invention is not limited to said each embodiment, A design change is possible suitably in the range which does not deviate from the meaning of this invention.
For example, in the above-described embodiment, a multi-axis excavator having three rods has been described. However, for example, a single-axis excavator or a multi-axis excavator having two or more rods may be used. Well, the number of rods is not limited.

  Further, the type and size of the base machine used in the excavator according to the present invention are not limited and can be set as appropriate.

Moreover, in the said embodiment, although the connection of the leader holding part and attachment part of an intermediate | middle anti-vibration means was performed via the connection pin, the connection method of a leader holding part and an attachment part is not limited. It is possible to design appropriately.
Further, the attachment position of the leader of the intermediate swinging means is not limited to the outer tube of the shaft connecting portion, and can be appropriately set, for example, fixed to the horizontal connecting portion.

  In the above embodiment, the driving means and the intermediate swinging means slide on the leader rail, but the side face of the leader may be slidably gripped.

It is a figure which shows the excavator which concerns on suitable embodiment of this invention, Comprising: (a) is a front view, (b) is a side view. It is a figure which shows the intermediate | middle anti-rest means of the excavator shown in FIG. 1, Comprising: (a) is a top view, (b) is a side view, (c) is a top view of a connection pin. (A) thru | or (c) is the schematic which shows the excavation condition by the excavator shown in FIG. 1, respectively. It is a side view which shows the modification of the excavator shown in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Leader 2 Drive means 3 Rod 31 Rod component 4 Connection member 5 Lower anti-vibration means 6 Intermediate anti-vibration means 60 Leader grip part 61 Attachment part 62 Connection pin M Excavator

Claims (4)

With a reader,
Drive means mounted movably along the reader;
A plurality of rod constituent members connected in the axial direction, and a rod that moves together with the driving means;
A connecting member for connecting the rod constituent members in the axial direction;
Lower swinging means fixed to the lower part of the reader;
An excavator comprising intermediate bracing means disposed between the lower bracing means and the driving means,
The connecting member is composed of an outer tube and an inner tube held rotatably in the inner space of the outer tube,
The driving means includes a gripping means for slidably gripping the reader,
A reader gripping portion for gripping the reader slidably with the intermediate swinging means;
An attachment portion fixed to the outer tube ,
The excavator characterized in that the reader gripping part and the attachment part are detachably connected.   2. The excavator according to claim 1, comprising a plurality of the intermediate swinging means. With a reader,
Drive means mounted movably along the reader;
A plurality of rod constituent members connected in the axial direction, and a rod that moves together with the driving means;
A connecting member for connecting the rod constituent members in the axial direction;
Lower swinging means fixed to the lower part of the reader;
An excavator comprising an intermediate anti-vibration means disposed above the lower anti-vibration means,
A reader gripping portion for gripping the reader slidably with the intermediate swinging means;
An attachment portion fixed to the connecting member;
The reader grip part and the attachment part are detachably connected ,
Said rod has a plurality Hon'nami set, wherein said connecting member is bundling a plurality of said rods, drilling machine.   The excavator according to any one of claims 1 to 3, wherein the reader gripping part and the attachment part are connected via a connecting pin.

Images