JP4192223B2 - Excavator mounted on traveling cart - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention belongs to the technical field of excavators mounted on traveling carts that excavate vertical holes when building a building or improving the ground in civil engineering work.
[0002]
[Prior art]
As shown in FIGS. 9 and 10, a general excavator mounted on a conventional traveling carriage is known as a type in which an earth auger f is assembled to a boom c that moves up and down to excavate a vertical hole. It has been.
As shown in FIGS. 9 and 10, in the excavator of the above type, a traveling operation unit b1 and an excavation operation unit b2 are arranged on a traveling carriage b fixed to the ground or the like by a fixing member a, and the excavation operation unit b2 Is provided with a base boom c1 in which a swingable and extendable telescopic boom c2 is fitted, and is attached to a mounting arm d on which a rotary drive motor e swings at the tip of the telescopic boom c2. The mounting arm d can be rotated about 90 degrees around the rear end of the hook suspension j at the tip of the telescopic boom c2, and an earth auger f is added to the lower side of the rotary shaft of the rotary drive motor e. The earth auger f consists of a drilling blade h consisting of spiral blades, and when used, a cutting cone (not shown) is attached to the tip and the boom d descends when using it. To do.
In the excavator incorporated in the traveling carriage b, while the traveling carriage b is traveling, the boom c and the earth auger f are folded and fixed by the mounting arm d. Is rotated 90 ° around the arm c, and the earth auger f is further rotated to be parallel with the horizontal plane and fixed with an appropriate fixing member. The hook j is also fixed to the traveling carriage b with a wire. Yes.
[0003]
[Problems to be solved by the invention]
By the way, in the conventional excavator as described above, the hook suspension j is attached to the foremost end of the boom c, and the attachment position of the mounting arm d is not the foremost end of the boom c, but is attached to the lower position of the hook suspension j. Therefore, there is a problem that the length of the earth auger f of the excavator cannot be made sufficiently long.
Further, since the rotation of the mounting arm d is at most about 90 degrees, there is a problem that the mounting position of the earth auger f is also limited, and further, in excavation work, in a narrow place where the rotation of the boom is limited. There was a problem that excavation work was difficult.
[0004]
The present invention has been made in view of the above-mentioned problems, and the problem is that in an excavator mounted on a traveling carriage, a long earth auger can be mounted on a specified traveling carriage, and the arrangement for fixing the earth auger is more free. Another object of the present invention is to provide an excavator that can perform excavation work even in a narrow place where the rotation of the boom is restricted during excavation work.
[0005]
[Means for Solving the Problems]
In order to solve the above-described problems, the invention according to claim 1 is characterized in that one end of the earth auger mounting member is rotatably provided at the most distal end portion of the telescopic boom, and the rotation shaft of the mounting member is in the boom length direction. The earth auger is swingably attached to the other end of the mounting member, and even if the earth auger and the boom are bent in parallel, these long objects do not interfere with each other. This excavator is mounted on a traveling carriage that can be stored in parallel.
In order to solve the above-mentioned problem, the invention according to claim 2 makes the length of the mounting member of claim 1 variable so that the desired length can be obtained even if the diameter of the earth auger, motor, rotary swivel, etc. changes. This excavator is mounted on a traveling cart that can be fixed and can be stored in parallel without any trouble in the earth auger and boom.
[0006]
DETAILED DESCRIPTION OF THE INVENTION
Here, a preferred embodiment of an excavator mounted on a traveling carriage according to the present invention will be described with reference to the drawings.
FIG. 1 is a plan view from above, in which a ground auger 7 of an excavator 2 is housed and fixed to a traveling cart 1, and FIG. 2 is a side view thereof, but the traveling cart 1 includes a traveling driving unit 21 and an excavating operation unit 22 At the four corners of the excavation operation unit 22, fixing members 23 for fixing the excavation operation unit 22 to the ground or the like are arranged, and during the excavation work, the overhanging member 231 (FIG. 6) projects to the left and right and ends. The telescopic legs 232 (FIG. 6) of the section extend to slightly lift the tire 25 and fix the excavation operation section 22 and the traveling carriage 1 to the ground or the like.
In addition, the boom upper portion 24 of the excavation operation unit 22 is provided with a multistage boom 3 that expands and contracts, and raises the base boom 31 to a desired angle, but the telescopic boom 32 inserted into the base boom 31 extends. The boom tip portion 4 to which the earth auger 7 and the hook are attached is attached to the tip of the telescopic boom 32 at the final stage.
The first embodiment of the tip portion 4 is as shown in FIG. 3, and the rotation mounting portion 61 of the earth auger mounting member 6 is attached to the tip portion 41 that is the tip of the hook suspension 5. The mounting member 6 has a length that does not hinder each other even if the earth auger 7 and the base boom 31 are folded and stored in parallel. The radius may be longer than the earth auger 7, the motor 71, or the rotary swivel 75, and is about 60 cm.
Then, the mounting portion 72 of the motor portion 71 of the earth auger 7 is swingably mounted to the mounting portion 62 at the other end of the mounting member 6.
The cutting edge 41 is provided with a rotating shaft 411 coaxial with the booms 31 and 32, and a circular hook 412 protrudes from the tip of the rotating shaft 411. A fitting portion 611 of 61 is rotatably provided, and the rotation attachment portion 61 is fixed to the end of the attachment member 6.
[0007]
In the first embodiment, the rotating shaft 411 of the mounting member 6, the booms 31 to 32, and the longitudinal axis are on the same axis, but may not be on the same axis in some cases. The axes need to be parallel.
This is because, when the earth auger 7 is housed and fixed, the earth auger 7 must be bent and rotated so as not to be parallel to the base boom 31, so that it cannot be housed and fixed in the traveling carriage 1 efficiently in terms of space.
When moving in FIGS. 1 and 2, the cutting blade 73 at the tip of the earth auger 7 shown in FIG. 6 is removed in order to prevent danger, and is arranged and fixed at another appropriate place on the traveling carriage.
[0008]
Next, a description will be given of a second embodiment of the distal end portion 4 as shown in FIG. 4. Up to the configuration in which the rotation mounting portion 61 is fixed to the end of the mounting member 6 at the most distal end portion 41. The configuration is the same as that of the first embodiment.
In the configuration of the second embodiment, the mounting member 6 needs to have a length that does not hinder the earth auger 7 and the foundation boom 31 from being interfered with each other. In the first embodiment, about 60 cm. However, when the maximum diameter of the motor part of the earth auger or the screw is larger than 60 cm × 2, it hits the boom 3 and cannot be folded in parallel.
Therefore, in the second embodiment, the length of the mounting member 6 is variable, and a hollow cylinder 63 is fixed to the upper surface of the rotary mounting portion 61 and is slid so as to be fitted and slid into the hollow cylinder 63. A pipe 64 is provided, and a hole 631 of the hollow cylinder 63 and a plurality of adjustment holes 641 provided in the slide pipe 64 are selected so as to be fixed at a desired position, and a pin 65 is inserted and fixed to a predetermined length. .
In such a configuration, when replacing the earth auger, motor, rotary swivel, etc. with another one, even if the diameter changes, it can be easily fixed to a desired length, and the replaced earth auger It can be stored in parallel with the boom without trouble. On the other hand, in the earth auger having a smaller diameter, the length of the fixed mounting member 6 can be made shorter than 60 cm, and can be folded and stored compactly, thereby eliminating the waste of space.
[0009]
Further, a third embodiment of the tip portion 4 will be described as shown in FIG. 5. The most advanced portion 41 is provided with a rotating shaft 415 coaxial with the booms 31 to 32. A pair of flange portions 417 and 418 and a rotation portion 416 are provided at the tip of the rotation shaft 415, and a hollow rotation fitting portion 615 in the attachment member 6 is fitted to the rotation portion 416, and the distal end portion 41 is opposed to the rotation portion 416. The attachment member 6 is attached so that it can rotate 360 degrees.
Also in the third embodiment, when the earth auger 7 is housed and fixed, the earth auger 7 must be folded and parallel to the base boom 31 in order to efficiently fix and house the earth auger 7 in the traveling carriage 1. However, as in the first embodiment, the rotating shaft 415 of the mounting member 6, the booms 31 to 32, and the longitudinal axis need to be coaxial, or both axes need to be parallel.
[0010]
[Operation]
The operation of the excavator will be described with reference to FIG. First, as shown in FIG. 6 (a), in the excavator 2 mounted on the traveling carriage 1 having the above-described configuration, the projecting member 231 of the fixing member 23 projects to the left and right, and the telescopic leg 232 at the end extends to expand the tire 25. Next, the excavation operation unit 22 and the traveling carriage 1 are fixed to the ground or the like. Next, the storage and fixing of the earth auger 7 is released, the base boom 31 of the multistage boom 3 is raised to a desired angle, and the telescopic boom 32 is Simultaneously with the extension, the attachment member 6 is rotated 90 degrees, the motor 72 is swung vertically from the tip of the attachment portion 72, and the earth auger 7 is connected to the drive connection portion 74 to start excavation work. Put it in a state.
As shown in FIG. 6 (a), the state of FIG. 3 (a) of the first embodiment, the state of FIG. 4 (a) of the second embodiment, and the state of FIG. 5 (a) of the third embodiment. ) To start excavation work. Next, while the earth auger 7 is rotated by the motor 75, the foundation boom 31 is lowered while the telescopic boom 32 is contracted, and excavation work is performed while the earth auger 7 is pressed downward until the boom 3 becomes horizontal. Excavation can be continued until the state of FIG. 3 (b) of the first embodiment 1, the state of FIG. 4 (b) of the second embodiment, and the state of FIG. 5 (b) of the third embodiment. it can.
[0011]
Further, the embodiment of the present invention is applied to the leader built-in excavator already proposed by the present inventor, as shown in FIG. 7, but as shown in FIG. The excavation work is started in the state of FIG. 3 (a) of the first embodiment, the state of FIG. 4 (a) of the second embodiment, and the state of FIG. 5 (a) of the third embodiment. While the earth auger 7 is rotated by the motor 75, the built-in leader 76 is excavated by pressing the earth auger 7 as shown in FIG.
When used in this excavator with a built-in leader, it is possible to excavate a deeper shaft than in the past, despite being compact as a whole.
[0012]
Furthermore, as another example of operation using the excavator with a built-in leader already proposed by the present inventor, as shown in FIG. 8, the position of the earth auger 7 with respect to the boom 3 is opposite to the normal use state. That is, the case where the earth auger 7 is used on the side opposite to the hook suspension 5 will be described.
In this case, it is suitable for excavation work in a narrow place where the excavation operation unit 22 cannot rotate. However, when the storage and fixing of the earth auger 7 is released and the base boom 31 of the multistage boom 3 is raised to a desired angle, At the same time, the mounting member 6 is rotated 180 degrees, the ground auger 7 is suspended vertically while the mounting portion 72 swings, and the ground auger is hydraulically supplied from the rotary swivel 75 while the leader 76 is left behind the work carriage. Press 7 to start excavation work.
[0013]
With the above configuration and operation,
(1) A longer earth auger 7 can be mounted while being assembled than the earth auger of an excavator mounted on a conventional traveling carriage. That is, it is possible to mount the earth auger 7 that is longer by the length X shown in FIGS. This length is very effective in traveling carts that can only be mounted on a finite length.
(2) Since the mounting member can be rotated 360 degrees, the position of the earth auger relative to the boom when mounted on a traveling carriage can be fixed more freely than before. Of course, it can be mounted and fixed on the boom, and the space beside the boom can be used effectively.
(3) During the excavation work, since the mounting member can be rotated 360 degrees, the position of the earth auger 7 with respect to the boom 3 is opposite to the normal use state, that is, the earth auger 7 on the side opposite to the hook 5. Can be used.
(4) Further, in the second embodiment, since the length of the mounting member 6 is made variable, when exchanging the earth auger in the excavator mounted on the traveling carriage, the earth auger / motor / rotary swivel of any diameter is used. Can also be supported.
[0014]
Of course, the present invention is not limited to the above-described embodiment as long as the features of the present invention are not impaired. For example, the boom in this embodiment has two stages, but a boom having three or more stages may be used. Of course, the excavator may be a crawler type or a rough terrain type, and may be used for an excavator mounted on a work carriage having various earth augers.
[0015]
【The invention's effect】
As described above, according to the first aspect of the present invention, one end of the earth auger mounting member is provided at the most distal end portion of the telescopic boom so as to be rotatable 360 degrees, and the rotation shaft of the mounting member is in the length direction of the boom. A ground auger is swingably attached to the other end of the mounting member, and the mounting member has a length that does not hinder each other even if the ground auger and the boom are bent in parallel. Because it is an excavator mounted on a carriage, it can be mounted with a longer earth auger 7 assembled than the earth auger of an excavator mounted on a conventional traveling carriage, and the mounting member can be rotated 360 degrees, so the traveling carriage The position of the earth auger relative to the boom when mounted on the boom can be fixed more freely than before, and it can be stored and fixed side by side with the boom. The effect that the space beside the boom can be used effectively is obtained. Further, since the mounting member can be freely rotated 360 degrees during excavation work, the position of the earth auger 7 with respect to the boom 3 is opposite to that in the normal use state, that is, on the side opposite to the hook 5. Can be used for excavation work.
According to the second aspect of the present invention, since the length of the attachment member of the first aspect is variable, the excavator mounted on the traveling carriage according to the first aspect can be accommodated and fixed to a desired length. Even if the diameter of the earth auger, motor, rotary swivel, etc. changes, the mounting member can be made to the desired length so that the earth auger and boom can be stored and fixed in parallel without hindrance, and the earth auger can be easily replaced Is obtained. On the other hand, in the earth auger having a smaller diameter, the length of the fixed mounting member 6 can be shortened and stored compactly, thereby eliminating the waste of space.
[Brief description of the drawings]
FIG. 1 is a plan view from above in which an earth auger is housed and fixed in an excavator mounted on a traveling carriage according to an embodiment of the present invention;
FIG. 2 is a side view of the excavator mounted on the traveling carriage of FIG.
FIG. 3 (a) is an enlarged side view illustrating the state of the mounting member when the beam rises, and FIG. 3 (b) is a side view of the mounting member according to the first embodiment of the present invention. Side surface enlarged view explaining the mounting member state when it becomes horizontal,
FIG. 4 (a) is an enlarged side view illustrating the state of the mounting member when the beam rises, and FIG. 4 (b) is a side view of the mounting member according to the second embodiment of the mounting member of the present invention. Side surface enlarged view for explaining the state of the mounting member when leveled,
FIG. 5 (a) is a partially enlarged side view for explaining the state of the mounting member when the beam rises in the third embodiment of the mounting member of the present invention, and FIG. Side surface enlarged view for explaining the state of the mounting member when leveled,
FIG. 6 is a side view showing a state in which excavation work is started by the excavator that controls the boom in the excavator mounted on the traveling carriage of the present invention. FIG. FIG. 8 is a side view of a state in which excavation work is performed by an excavator that controls the machine. FIG. 8 is a side view of another state in which excavation work is started in the excavator mounted on the traveling carriage according to the embodiment of the present invention A plan view from above, in which the earth auger of the excavator is housed and fixed to a conventional traveling carriage,
10 is a side view of FIG. 9 in which an earth auger of an excavator is housed and fixed on a conventional traveling carriage.
[Explanation of symbols]
1 ... traveling cart 2 ... excavator
21 ... Driving section
22 ... Drilling operation part
23… Fixing member
231 ... Overhang member
232 ... telescopic legs
24… Boom upright
25 ... Tire 3 ... Multi-stage boom
31 ... Basic boom
32 ... Telescopic boom 4 ... Boom tip
41 ... the most advanced part
411,415 ... Rotating shaft
412… Circle
416 ... Rotating part
417,418 ... Jaw 5 ... Hook suspension 6 ... Earth auger mounting member
61… Rotation mounting part
611,615 ... Mating part
62 ... Mounting part
63 ... Hollow tube
631 ... hole
64 ... Slide tube
641 ... Adjustment hole
65 ... Pin 7 ... Earth Auger
71… Motor part
72 ... Mounting part
73 ... Cutting blade
74 ... Drive connection
75 ... Rotary swivel
76 ... Leader

Claims (2)

One end of the earth auger mounting member is provided at the most advanced part of the telescopic boom so that it can rotate 360 degrees, the rotation axis of the mounting member is coaxial or parallel to the axis in the length direction of the boom, and the other end of the mounting member is grounded An excavator mounted on a traveling carriage, wherein an auger is swingably attached, and the attachment member has a length that does not interfere with each other even if the earth auger and the boom are bent in parallel. The excavator to be mounted on a traveling carriage according to claim 1, wherein the length of the attachment member is variable and can be fixed to a desired length.

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