JP4695048B2 - Construction machine with reader - Google Patents

Description

  The present invention relates to a construction machine having a leader for guiding a drilling body, such as a drilling machine or a pile driving machine.

  In this type of conventional construction machine, it is necessary to stably move a long leader extending substantially in the vertical direction when moving to change the work location. As a conventional moving method, a method according to the steps shown in FIGS. This method is a distance range in which the base machine 50 can travel while changing the angle formed between the leader 54 and the boom 52 in a state where the lower end of the leader 54 is grounded and the leader 54 is supported on the ground (FIG. 6A). (Fig. 6 (b)), and after changing the contact position of the reader 54 again (Fig. 6 (c)), the machine gradually moves within the distance range in which the base machine 50 can travel (Fig. 6 (b)). d)) Method.

  However, in such a conventional method, an excessive load may be applied to the reader, and the base machine is moved little by little while replacing the grounding position of the reader, so that it takes time and effort to move. There's a problem.

  The present invention has been made in view of such a problem, and an object of the present invention is to provide a construction machine that can smoothly move without applying an excessive load to the leader in a construction machine provided with a leader. And

In order to achieve the above-described object, an invention according to claim 1 is directed to a base machine capable of traveling, a boom attached to the base machine so as to be pivotable and capable of being lifted, and suspended from the boom to be cut during work. In a construction machine comprising a leader for guiding a hole,
A restriction member that is engaged with the lower end of the suspended leader and can regulate displacement of the lower end relative to the base machine is attached to the base machine, and a restriction space is formed by the restriction member. The restriction member can freely enter and leave, and when the reader is inserted into the restriction space, the restriction member restricts displacement of the reader relative to the base machine in a direction perpendicular to the traveling direction of the base machine .

  The invention according to claim 2 is characterized in that the restricting member according to claim 1 is composed of a pair of parallel frame members extending along the traveling direction of the base machine and projecting to the outside of the base machine.

  According to a third aspect of the present invention, the base portion of the restricting member according to the first or second aspect is welded to a chassis of a base machine.

  According to the present invention, when the construction machine moves, the base machine travels with the leader suspended, and at that time, the lower end of the leader is engaged and the displacement is attached to the vehicle body of the base machine. It regulates with a regulating member. In this way, even when the base machine is running, the construction machine can move while the leader is in a stable state. Since the reader is moved in a suspended state, an excessive load is not applied to the reader, and it is not necessary to replace the reader, so that the movement can be performed smoothly and quickly.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a side view showing a working machine equipped with a leader according to an embodiment of the present invention. In the figure, reference numeral 10 denotes a travelable base machine, and the base machine 10 includes an outrigger 11. Although the illustrated base machine 10 includes wheels so that it can run, the present invention is not limited to this, and may include a caterpillar instead of the wheels.

  An extendable boom 12 is attached to the base machine 10. The boom 12 can be turned and raised with respect to the base machine 10. A leader 14 is suspended from the tip of the boom 12 via an upper swing machine 13. Further, from the tip of the boom 12, the earth auger 15 that is guided by the leader 14 during the operation and constitutes the drilling body is suspended so as to be vertically movable. One or more auger screws 16 are connected to the earth auger 15. At the lower part of the leader 14, a steady rest 17 for securing the auger screw 16 is attached.

  As shown in FIG. 1, during work, the outrigger 11 is extended to fix the base machine 10 to the ground, the leader 14 is arranged vertically, and the earth auger 15 moves along the leader 14 in the vertical direction. A hole is drilled in the ground with a screw 16.

  In addition, the construction machine provided with the leader may be provided with a hammer in addition to the one provided with the auger screw.

  As shown in FIG. 2, a base portion of a pair of frame members 20, 20 that are restricting members is attached to the central portion of the front portion of the base machine 10. The base portion of each frame member 20 is preferably welded to a chassis of the base machine 10 or a strength member that ensures the strength of the base machine 10. Also, bolting can be used instead of welding.

  The pair of frame members 20, 20 extend parallel to the traveling direction of the base machine 10, that is, the front-rear direction of the base machine 10, and the free end side of the pair of frame members 20, 20 protrudes outward from the base machine 10, that is, forward. Or it is a member of H-shaped cross section. The restriction space 22 formed between the pair of frame members 20, 20 is located substantially at the center in the vehicle width direction of the base machine 10. The interval between the restriction spaces 22 corresponds to the width of the reader 14, and the lower end portion of the reader 14 is inserted into the restriction space 22 between the pair of frame members 20, 20, and the pair of frame members 20, 20. Is engageable with the lower end of the reader 14.

  In the construction machine having the leader configured as described above, when the construction machine is moved within a construction site for a short distance in order to change the drilling position, the outrigger 11 is shown in FIG. And the length and / or elevation angle of the boom 12 is adjusted as appropriate so that the lower end of the reader 14 enters the restriction space 22 between the pair of frame members 20 and the upper end of the reader 14 is The reader 14 is slightly inclined from the vertical direction so that it is positioned rearward from the lower end toward the anti-frame member 20 side. This ensures that the lower end portion of the reader 14 enters the restriction space 22 between the pair of frame members 20 and is engaged with the pair of frame members 20. At this time, the lower end of the reader 14 is separated from the ground.

  When the base machine 10 travels in this state, the displacement of the leader 14 relative to the base machine 10 is regulated by the boom 12 and the pair of frame members 20, and in particular, perpendicular to the traveling direction of the base machine 10 at the lower end of the leader 14. The displacement with respect to the base machine in the direction to be controlled is regulated. For this reason, the rolling of the leader 14 is prevented, and the construction machine can be stably moved even when the leader 14 is suspended from the ground. Since there is no need to ground the reader 14, an unreasonable load does not act on the reader 14. Since the base machine 10 can keep running at a low speed, the machine can be moved efficiently.

  Further, since the base portion of the frame material 20 is attached to the chassis or the strength member, the frame material 20 can have sufficient strength and rigidity against the reaction force from the reader 14.

  As described above, the pair of frame members 20 serving as the regulating members regulate the displacement of the reader 14 relative to the base machine in the direction orthogonal to the traveling direction of the base machine 10, so that when the base machine 10 travels forward or backward, Although the lower end portion of the reader 14 may come out from between the restriction spaces 22 due to the inertial force due to deceleration, the inertial force basically acts in the front-rear direction. The lower end portion of 14 is again accommodated in the restriction space 22 between the pair of frame members 20.

  It is also possible to close the outlet of the restriction space 22 with a rope-like member or a wire-like member such as a wire so that the lower end of the reader 14 does not come out between the restriction spaces 22 of the pair of frame members 20. It is.

  When the ground is inclined in the left-right direction with respect to the traveling direction of the base machine 10, the boom 12 is turned to bring the upper end of the reader 14 to the slope side as shown in FIG. It is also possible to move while.

  FIG. 5 shows another embodiment. In this example, four frame members as restricting members extend in parallel in the traveling direction of the base machine 10, that is, in the front-rear direction, and between adjacent frame members. Three restriction spaces 22, 22, and 22 are formed. The central restriction space 22 is located at the center in the vehicle width direction of the base machine 10. The interval between the restriction spaces 22 corresponds to the width of the reader 14. The lower end portion of the reader 14 is inserted into each restriction space 22, and the adjacent frame members 20, 20 are located at the lower end portion of the reader 14. Engageable.

  In the construction machine provided with the leader configured as described above, any one of the plurality of restriction spaces 22 can be selected and the lower end portion of the leader 14 can be inserted, and the construction machine is inclined in the left-right direction. When moving on the ground, it is possible to balance by inserting the lower end of the reader 14 into the restriction space 22 other than the center.

It is a side view which shows the state at the time of work of the construction machine provided with the leader by embodiment of this invention. It is the partial perspective view seen from the front of the construction machine of FIG. It is a side view which shows the state at the time of the movement of the construction machine provided with the leader of FIG. It is a front view at the time of the construction machine provided with the leader of FIG. 1 moving on the ground inclined in the left-right direction. It is the partial perspective view seen from the front of the construction machine provided with the leader by other embodiment of this invention. (A)-(d) is a figure which shows the process of the conventional moving method of the construction machine provided with the leader.

Explanation of symbols

10 Base machine 12 Boom 14 Leader 15 Earth auger 20 Frame material (regulating member)
22 Restricted space

Claims (3)

In a construction machine comprising: a base machine capable of traveling; a boom attached to the base machine so as to be capable of turning and raising; and a leader that is suspended from the boom and guides a drilling body during operation.
A restriction member that is engaged with the lower end of the suspended leader and can regulate displacement of the lower end relative to the base machine is attached to the base machine, and a restriction space is formed by the restriction member. A reader characterized in that it can freely enter and leave the restriction space, and the leader is inserted into the restriction space, so that the restriction member restricts displacement of the reader relative to the base machine in the direction orthogonal to the traveling direction of the base machine. Construction machine provided.   2. The construction machine having a leader according to claim 1, wherein the restricting member includes a pair of parallel frame members extending along a traveling direction of the base machine and projecting to the outside of the base machine.   3. The construction machine having a leader according to claim 1, wherein the base of the restricting member is welded to a chassis of a base machine.

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