JP3028151B2 - Drilling rig with arm end attachment connection / separation device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an excavator capable of attaching and detaching an arm end attachment from an arm end. Here, the arm end attachment is attached to an end of the arm of the construction machine, and excavates or excavates such as hole excavation, scraping, scooping, removal crushing, and the like with respect to the ground and soil adhering matter. Attachment dedicated to work, such as earth auger including leader mast, power shovel, clam bucket with operation shaft, breaker, etc.

[0002]

2. Description of the Related Art Conventionally, an excavator that supports a leader mast L (an example of an arm end attachment B) of an earth auger by an arm end A1 provided on a rotating machine base on a self-propelled vehicle so as to be able to move up and down. Is the arm connecting cylinder L1
And a lower cylinder part and an upper cylinder part L2, which can disassemble and assemble the mast (see FIG. 4). However, even after the leader mast is disassembled, the arm connecting cylinder which supports the entire leader mast at the arm end A1 is provided. When the excavator body is loaded on a trailer and transported in this state because the part L1 remains,
The rear end of the arm connecting cylinder portion L1 projects obliquely rearward, and the overall length including the trailer becomes large, making it difficult to move at a narrow site or at an intersection. In addition to the problem of bulkiness during transportation and the like, if it is desired to use another arm end attachment such as a power shovel or a clam bucket with the same arm A in the related art, it is usually impossible to replace the attachment. Even if this could be done, it was not easy to fit and connect the arm end to the arm end attachment of the heavy object.

[0003]

In order to have an arm end attachment connection / separation device that allows quick and easy attachment and detachment of the arm end attachment from the arm end A1, the excavator body is taken up in a state in which the arm end attachment is detached and is not bulky. It is an object of the present invention to obtain an excavator which can be moved without using the same arm A and can easily use another type of arm end attachment.

[0004]

According to the present invention, an arm end A1 is provided.
When the male and female clevises 7 and 7 can be pivotally connected and separated from each other by fitting the male and female arms with the arm end attachment B with the clevis, the hydraulic cylinder 13 is used to move the male clevis 7, 7 from the pin hole S of the clevis to the outside. Provided are biaxial pins 15, 15 which can be advanced and retracted into the pin holes S1 of the female clevises 6, 6 in contact with each other, a portion near the arm end A 1 passing through the central longitudinal section N of the arm A, and the clevis 7, 7 of the arm end attachment B. 7
And an upper portion of the arm end attachment B near the clevis 7 passing through the central longitudinal section M of the arm end attachment passing through the middle point. End attachment B
, The clevis of the arm end A1 and the clevis of the arm end attachment B are male and female fitted, and the pin hole S1 of the clevis of the arm end A1 and the pin hole S of the clevis of the arm end attachment B coincide with each other. The connection of the clevises by projecting and inserting the biaxial pin 15 from the pinhole S of the male clevis into the pinhole S1 of the female clevis, and separating the clevis by retreating from the pinhole S1 of the biaxial pin. This is a drilling device with an arm end attachment connection / separation device that has become possible.

[0005]

First, as shown in FIG. 1, the arm A is lowered. In this case, the arm mounting cylinder L1 (part of the arm end attachment B) is located substantially below the undulating plane of the arm A, and the clevis 6 of the arm end A1 approaches the clevis 7 of the arm mounting cylinder L1. In this state, the arm A is laid down on the arm mounting tube. Next, the hooking ring 21 at the lower end of the cable of the telescopic pulling device C, which is led out through the guide portion (sheave) 20 at the central longitudinal section N (FIG. 2) at the tip of the arm A, is attached to the arm mounting cylinder portion side. Central longitudinal section M of the arm end attachment B passing through the middle point of the clevis 7, 7 (FIG. 2)
At the rear end of the clevis 7 and at the hook ring mounting portion 17 on the upper surface of the arm end attachment B.

In this state, when the cable 19 is pulled by the hydraulic cylinder 18 of the telescopic attraction device C as shown in FIG.
The arm connecting cylinder L1 is raised, and the clevis 7 is moved to the arm end A.
1 and the pin holes S and the pin holes S1 coincide with each other. Here, the double shaft pin 15 is inserted into the pin hole S1 by the hydraulic cylinder 13 so as to protrude from the pin hole S to the arm A.
The pivotal connection between the arm and the cylinder L1 is completed. To release this connection, the opposite operation is performed. When assembling the leader mast L into one, the arm connecting cylinder L
1 and the upper cylinder portion L2, and then the arm coupling cylinder portion L1
The above is set upright, and the lower tubular part L3 is placed under the arm connecting tubular part L1.
To join.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described in detail with reference to FIGS. FIG. 4 shows an excavator, which is provided on a rotating machine base 2 on a self-propelled vehicle 1 and has an arm connecting cylinder portion L1 pivotally supported at the tip of an arm A raised and lowered by a hydraulic cylinder 3a. Upper cylinder part L above and below cylinder part L1, respectively.
An auger machine 4 guided along a leader mast L formed by connecting the lower cylinder part 2 and the lower tubular part L3 is moved up and down by the main cable 5, and is connected to the earth auger 4 connected under the auger machine.
a is a device for excavating a vertical hole in the ground. 3 is a hydraulic cylinder for assembling the leader mast.

In FIGS. 1 and 2, reference numerals 6 and 6 denote clevis provided at the arm end A1 of the arm A. Reference numerals 7 and 7 denote the arm end A1 at the arm connecting cylinder L1 (part of the arm end attachment B). Clevis that pivots, of which clevis 6
Is the female side and clevis 7 is the male side entering clevis 6.
The clevis 7 is a band ring 8 that supports the arm connecting cylinder L1.
Are mounted side by side on a base plate 11 which is pivotally connected to the side base 9 by a connecting pin 10 which is perpendicular to the connecting cylindrical part. Reference numeral 12 denotes a cylinder provided between the clevis 7 and having a coaxial core and the same diameter as the pin hole S of the clevis, and a slit 12a is formed in the middle of one side of the cylinder 12 along the generatrix direction. 13,
Reference numeral 13 denotes a hydraulic cylinder fixed to a frame 14 on a base plate 11. The hydraulic cylinder 13 has an arm connection main body L1 that is parallel to the cylinder 12 with the rod sides facing inward and that passes through the midpoint of the clevis 7. It is provided substantially symmetrically with respect to the central longitudinal section M. The hydraulic cylinder 13 is connected to a two-part shaft slidably fitted in the cylinder 12 via a connecting rod 13a inserted into the slit 12a, that is, to the inner ends of the two shafts 15, 15, and connects the two shafts 15 to each other. The clevis 6 is advanced and retracted from the inner side of the pin hole S toward both outer sides by a distance larger than the thickness of the clevis 6. Reference numeral 16 denotes an auxiliary side plate set up on the base plate 11 with the thickness of the clevis 6 set, and an auxiliary pin hole S2 having the same diameter as the pin hole S and the same coaxial core.

Reference numeral C denotes an expansion / contraction device provided near the arm end A1. A guide portion 20 (sheave) in which a cable 19 connected to a hydraulic cylinder 18 on the back of the arm has a central longitudinal section N at the tip of the arm. Through the lower part of the arm abdomen A2, and the latching ring 21 at the lower end of the cord 19 is connected to the arm connecting main body L1 (part of the arm end attachment B) passing through the middle point of the male clevis 7, 7. The arm coupling main body L1 is detachably hung on a retaining ring mounting portion 17 near and behind the clevis 7 passing through the central vertical section M. The retaining ring mounting portion 17 is composed of a horizontal pin 17b which is rotatably inserted into and removed from the parallel protruding plate 17a. If the horizontal pin 17b is inserted into the parallel protruding plate 17a while the retaining ring 21 is inserted, the expansion / contraction device C Can be hooked and connected to the arm connecting cylinder portion L1, that is, the hook ring attaching portion 17 of the arm end attachment B.

When the arm A and the arm connecting cylinder L1 are positioned substantially in parallel, the clevis 7 on the base 13 is
The direction is the same as the clevis 6 on the side. Therefore, the latching ring 21 of the telescopic pulling device C is latched on the horizontal pin 17b of the latching ring mounting portion 17 of the arm connecting cylinder portion L1, and the hydraulic cylinder 1
8, the clevis 7 is pulled up to a position where the clevis 7 is expected to enter the clevis 6, and the clevis 7 is pulled into the clevis 6. Insert. At this time, the edge of the clevis 6 comes into contact with the guide stoppers 22 and 22a, and the pin hole S1 of the clevis 6, the pin hole S of the clevis 7, and the pin hole S2 of the auxiliary side plate 16 coincide. Here, according to a signal of a limit switch (not shown), the rope 1 by the hydraulic cylinder 13 is used.
9. Stop towing. In this state, the hydraulic cylinder 13 is pulled to pull the two shaft pins 15, 15 out of the pin holes S, S1, S2.
The clevis 6 of the arm end A1 and the clevis 7 of the arm connecting cylinder L1 are pivotally connected. To disconnect this connection, the opposite operation is performed.

Thus, the arm connecting main body portion L1 is supported by the leader mast assembling hydraulic cylinder 3, and the upper cylindrical portion L2 is connected to the front end of the arm connecting main body portion L1, and these cylindrical portions L1 and L2 are connected to the undulating hydraulic cylinder 3a. Stand up by
The lower cylinder L3 is connected to the lower end of the arm coupling cylinder L1 to complete the assembly of the leader mast L.

When the arm connecting cylinder L1 slightly crosses the arm A, the retaining pin 11a is pulled out and the base 1
3, the direction of the clevis 7 and the direction of the clevis 6 on the side of the arm A are made substantially coincide with each other, and then the arm connecting cylinder L1 is lifted only by the expansion and contraction pulling device C, thereby forcing the arm A and the arm connecting cylinder L1. connect.

The retractable pulling device C includes a portion near the arm end 1a passing through the central longitudinal section N of the arm A and a clevis on the central longitudinal section M passing through the midpoint of the clevis 7, 7 of the arm end attachment B. It may be a hydraulic cylinder that is connected to the upper part of the nearby arm end attachment B so as to be detachable.

In the above embodiment, the clevis 6 of the arm A is on the female side, and the clevis 7 of the arm end attachment B is on the male side. 7 may be the female side. In this case, both shaft pins 15, 15 operated by the hydraulic cylinder 13 are provided inside the male clevis 6, 6,
The clevis 6 is provided so as to be able to advance and retreat from the pin hole S1 of the clevis 6 to the pin hole S1 of the female clevis 7, 7 contacting the outside.

[0015]

According to the present invention, when the arm end A1 and the arm end attachment B are separably connected to each other by the clevis, the hydraulic cylinder 13 is provided inside the male clevis 7.
A double-pin pin 15 is provided which can advance and retreat from the pin hole S of the same clevis to the pin hole S1 of the female side clevis 6 which is in contact with the outside, and a portion near the arm end A1 passing through the central longitudinal section N of the arm A; The arm end attachment B is pulled up by a separable expansion / contraction device C between the upper part of the attachment near the clevis 7 passing through the central vertical section M of the arm end attachment passing through the middle point of the arm end attachment, and the clevis is male and female. When the pin holes S1 and the pin holes S coincide with each other and the pin holes S coincide with each other, the hydraulic cylinder 13 causes the biaxial pins 15 to advance and retreat from the pin holes S to the pin holes S1, thereby connecting and separating the clevises. , Easily arm end A
Since the arm end attachment can be attached to and detached from 1, and especially the long leader mast can be removed and only the excavator body can be loaded on the trailer, it has the advantage that it can be easily moved at narrow bends and places, and has the same arm. There is an advantage that a single excavator can be generalized by attaching various arm end attachments.

[Brief description of the drawings]

FIG. 1 is a perspective view of a main part of an embodiment before being assembled.

FIG. 2 is a plan view of a main part of the above-described main part before assembly, which is shifted in a vertical direction.

FIG. 3 is an enlarged side view of a notch after assembling a pivotal portion of the main part.

FIG. 4 is a side view of the entire excavator according to the first embodiment.

[Explanation of symbols]

 Reference Signs List A arm A1 arm end A2 arm abdomen B arm end attachment C expansion / contraction device L leader mast L1 arm coupling cylinder L2 upper cylinder L3 lower cylinder S pin hole S1 pin hole 6 clevis 7 clevis 11 base plate 12 cylinder 12a slit 13 Hydraulic cylinder 13a Connecting rod 15 Both shafts 16 Auxiliary side plate 17 Hanging ring mounting part 17b Horizontal pin 18 Hydraulic cylinder 19 Cable 20 Guide part 21 Hanging ring 22 Guide stopper 22a Guide stopper

Claims (3)

(57) [Claims] When the arm end (A1) and the arm end attachment (B) are male and female fitted with each other by clevis so as to be pivotable and separable, the male clevis (7,
7) The female clevis (6, 6) which contacts the inside of the clevis from the pin hole (S) of the clevis by the hydraulic cylinder (13) inside.
6) A double shaft pin (15, 1)
5), a portion near the arm end (A1) passing through the central longitudinal section (N) of the arm (A) and an arm end attachment passing through the midpoint of the clevis (7, 7) of the arm end attachment (B). Clevis (7) passing through the central longitudinal section (M)
And an upper portion of the arm end attachment (B) close to the arm end attachment (B) is provided so as to be separable, and the arm end attachment (B) is pulled up by the elastic end attachment (C) so that the arm end (B) is pulled up. A1) and the clevis of the arm end attachment (B) are male and female fitted, and the arm end (A
The pin hole (S1) of the clevis of (1) matches the pin hole (S) of the clevis of the arm end attachment (B), and the pin of the male clevis of the double shaft pin (15) by the hydraulic cylinder (13). From the hole (S), insert the female clevis pin hole (S
1) A digging device with an arm end attachment connection / separation device, characterized in that the clevis can be connected to each other by protruding insertion into the pin hole, and the clevis can be separated by retreating from the pin hole (S1) of the coaxial pin. 2. An auxiliary side plate (1) having a thickness capable of inserting the female clevis (6) outside the male clevis (7).
6) is provided, and the double shaft pin (15) moved by the hydraulic cylinder (13) extends from the pin hole (S) of the male clevis (7) to the auxiliary pin hole (S2) of the auxiliary side plate (16). The excavator with an arm end attachment connection / separation device according to claim 1, wherein the excavator is adapted to advance and retreat. 3. A guide section (20) at a central longitudinal section (N) at the tip of the arm A by a telescopic attraction device (C) connecting a cable (19) connected to a hydraulic cylinder (18) on the back of the arm A.
2. The excavator according to claim 1, wherein the excavator is a device which is led out of the arm A below the abdomen (A1).