JP2652765B2 - Connection device between earth auger and drive motor - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001] The present invention relates to an improvement in a connection device between a drive motor suspended from a work machine and an earth auger in a civil engineering excavator.

[0002]

2. Description of the Related Art Conventionally, a drive motor and an earth auger are connected by a flange joint method of connecting a connection flange provided at a tip of a rotating shaft of the drive motor and a connection flange provided at a top of the earth auger, and a drive motor. A polygonal shaft joint system in which the rotation shaft of the polygonal shaft is formed as a polygonal shaft, and the rotation bearing portion at the top of the earth auger is formed as a receiving portion having the same shape as the polygonal shaft to drive jointly. There are various types such as a screw joint system in which the driving shaft is formed in a male screw shape, and the rotation bearing at the top of the earth auger is formed in a female screw shape and jointed. It is a means to directly connect with the auger. When excavating using an earth auger or casing auger, and performing pile driving work or sheet pile standing work, first connect the drive motor (14) suspended at the end of the boom of the working machine to the earth auger or casing auger. The excavator is set on the ground, and then the drive motor (14) is turned to excavate. The work of connecting the drive motor (14) and the earth auger (8) is performed first by the boom (17) of the working machine. ), The earth auger (8) is hung above the ground with the wires erected on the ground, and then the worker climbs the earth auger (8) and performs the connection work according to each of the above methods at a high place. In the case of a small work machine, the connection work is performed by using the excavation blade (18) of the earth auger, and in the case of a large work machine, the work is performed by climbing a ladder attached to a leader. Therefore, climbing the earth auger on a small machine is extremely dangerous because the climber puts his feet and hands on the excavator blade (18), and is extremely dangerous even on a small machine large machine because it is a manual connection operation at a high place. It is both inefficient and efficient. In addition, the connecting portion is configured to be able to turn left and right (so excavation is possible), but not to slide up and down and bend back and forth.

[0003]

SUMMARY OF THE INVENTION In the present invention, the prior art involves an extremely dangerous work at a high altitude due to a structural problem that the connecting portion cannot be bent as described above, and it is inefficient. Therefore, the purpose is to solve these problems and to prevent work-related accidents.

[0004]

SUMMARY OF THE INVENTION The present invention comprises two parts, a driving boss connected to the tip of a driving motor and an earth auger connector connected to the top of the earth auger.
The connecting boss formed on the earth auger connector is configured to be able to slide up and down and to rotate back and forth and right and left within the connecting portion provided on the driving boss, so that the rotating shaft of the drive motor and the earth auger can be rotated. The above-mentioned problem was solved by making the top part connectable on the ground, eliminating the danger and inefficiency of the connection work.

[0005]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a driving boss (7), and FIG. 2 is a perspective view of an earth auger connector (13). The driving boss (7) is composed of a connecting portion and a connecting portion. The connecting portion has a rectangular slide shaft receiving portion (4) into which a part of the slide shaft (11) fits in sliding contact from below and a driving motor from above. A boss (19) formed as a single body with a rotation bearing portion (20) into which a part of the rotation shaft (1) fits and slides, and a boss (19) is fixedly installed in parallel on both sides. And a slide shaft holding plate (6) (6) provided with a vertically long slide hole (5), and a connecting portion is provided by a connection flange (3) fixedly provided on an upper portion of the boss (19). It is configured. The perforated shapes of the slide shaft receiving portion (4) and the rotation bearing portion (20) are not necessarily limited to a quadrangle, but may be a polygonal shape. I just need. On the other hand, the earth auger connector (13) shown in FIG.
The connecting portion comprises a connecting portion and a connecting boss. The connecting portion is connected to a connecting flange (10) connected to a connecting flange (9) provided on the top of the earth auger (8), and the flange (10) includes:
A slide shaft (11) having an appropriate length, which is fitted between the slide shaft holding plates (6) and (6) of the drive boss (7) and is vertically slidable and rotatable back and forth, is fixed upright. At an appropriate position of the shaft (11), a slide pin (12) which is inserted into a vertically elongated slide hole (5), slides up and down in the hole (5), and rotates while protruding left and right is provided horizontally. It is the configuration that was done. In addition, the said suitable position is a slide shaft (11).
Is a position where the slide pin (12) is located above the vertically elongated slide hole (5) when it is slid upward, and is located below the hole (5) when it is slid downward. In the drawing, reference numeral (15) denotes a fluid material through-hole provided in the slide shaft (11), reference numeral (21) in FIG. 1 denotes a connection bolt hole provided in the connection flange (3), and reference numeral (22) in FIG. Is a connection bolt hole connected to the earth auger (8). In addition, even if the earth auger connection body which does not provide a fluid substance through-hole in the slide shaft (11) does not change the effect of the present invention.

The slide shaft (1) of the earth auger connector (13) is provided between the slide shaft holding plates (6) and (6) of the drive boss (7) having the above structure.
1) is inserted, and the slide pins (12) are respectively inserted into the vertically long slide holes (5). In that case, the ground auger connector (13) can be vertically slid and rotated back and forth between the slide shaft holding plates (6) and (6) by the interaction between the vertically elongated slide hole (5) and the slide pin (12). The device is configured.

[0007]

FIG. 5 is an explanatory front view showing another embodiment, in which a safety hook is provided on a side surface of a boss (19) immediately above a slide shaft holding plate (6). When (11) slides upward, it engages with the slide pin (12) to prevent the earth auger connector (13) from sliding downward.

[0008]

Next, the operation of the present invention according to the above embodiment will be described with reference to the drawings. The tip of the boom (17) of the work machine (23) is lowered to the ground, and a connection flange (2) provided on a rotating shaft (1) of a drive motor (14) suspended at the tip and a driving boss (7). And the connection flange (3) are connected by bolts (24) (FIGS. 5 and 7). At this time, the rotation shaft (1) of the drive motor (14) may be configured to protrude from the connection flange (2) by an amount that slides into the rotation bearing portion (20) of the boss (19). The protruding portion of the rotating shaft (1) is slidably fitted into the rotating bearing portion (20), and transmits the rotating power of the drive motor (1) to the earth auger connector (13) via the boss (19). Note that the rotating shaft (1) does not protrude from the connection flange (1), and the flange (1)
And the transmission of driving force by both flanges (2)
Needless to say, it may be performed only by the connection of (3). Next, the earth auger connector (13) is slid downward between the slide shaft holding plates (6) and (6), and the slide pin (12) is positioned below the vertically elongated slide hole (5) (FIG. 4). If the earth auger connector (13) is mounted on the ground while pivoting forward or backward about the pin (12), the earth auger connector (13)
Since the slide pin (12) rotates in the vertically long slide hole (5), the slide pin (12) is placed horizontally on the ground (FIG. 4). Therefore, the connection flange (9) of the earth auger (8) (FIG. 7) and the connection flange (10) of the earth auger connector (13) placed sideways on the ground are connected by connecting bolts (24). The motor (14) and the earth auger (8) are naturally connected on the ground via the connecting device of the present invention (FIG. 7). When this connection operation is completed, the earth auger (8) is pulled up to the ground by operating the work machine boom (17), and the earth auger (8) is pushed up to the excavation work site, and a pressing force is applied downward by the operation of the boom (17). 11) slides upward between the slide shaft holding plates (6) and (6), and at the same time, the slide pin (12) also slides on the slide shaft holding plate (6).
The upper end of the slide shaft (11) is slid in sliding contact with the slide shaft receiving portion (4) provided on the boss (19) by sliding upward in the vertically long slide hole (5) provided in (6) ( 3, 5, and 7). At this time, the boss (1
When the safety hook (16) is provided in 9), the hook (16) is engaged with the slide pin (12) from below, and the slide shaft (11) is located between the slide shaft holding plates (6) and (6). Are more stably held (FIG. 5). When the earth auger (8) is set at a predetermined excavation position and the drive motor (14) is driven, the rotational force rotates the earth auger (8) through the device to excavate. When the excavation is completed, the earth auger (8) is rotated in the reverse direction and pulled out. In this case, in the case of the present apparatus having the safety hook (16), the engagement of the safety hook (16) is released on the ground before the start of the drawing operation. Pull out by reverse rotation. The disengagement of the safety hook (16) is performed on the ground because the safety hook (16) is at a high position when the earth auger (8) is completely withdrawn, which is dangerous for disengagement work. is there. The slide pin (12) is slid downward to the lower part of the vertically long slide hole (5) due to the disengagement of the safety hook (16), so that the earth auger (8) is hung on the boom (17) after the pull-out is completed. When the tip of the boom (17) is lowered to the ground and the earth auger (8) is laid down on the ground, the earth auger connector (13) is turned sideways by the rotation of the slide pin (12). (3) (9) (10)
Can be released on the ground (FIG. 7).

[0009]

Since the present invention has the above-described structure and operation, the present invention is applicable when the drive motor (14) suspended from the end of the boom (17) and the earth auger (8) are connected. By using the device, it is now possible to perform the connecting work at a high place by climbing at least up to the top of the earth auger (8) on the ground, and the danger of the connecting work at the high place is released. It has a great effect. It is not necessary to attach a ladder for large aircraft. Further, when a safety hook (16) is attached to the drive boss (7), the engagement between the boss (19) and the slide shaft holding plates (6) (6) and the slide shaft (11) during excavation work. When the slide shaft (11) provided with the fluid passage (15) is used, the rotary swivel, the hollow shaft speed reducer, and the fluid passage can be more reliably maintained. It has the advantage that it can also be used in excavation work using an earth auger (8) having a hole (hollow shaft).

[Brief description of the drawings]

FIG. 1 is a perspective view of an embodiment of a driving boss.

FIG. 2 is an explanatory perspective view of the embodiment of the earth auger connection body.

FIG. 3 is an explanatory perspective view in which the driving boss of FIG. 1 and FIG. 2 and an earth auger connection body are integrally combined.

FIG. 4 is an explanatory view showing a state in which the earth auger connection body of the apparatus of the present invention shown in FIG. 3 is turned sideways, and showing that the earth auger connection body is configured to be freely rotatable back and forth.

FIG. 5 is an explanatory front view of an embodiment of a driving boss provided with a safety hook on the boss. The position of the safety hook indicated by the dotted line indicates the position before engaging with the slide pin.

FIG. 6 is a perspective explanatory view of an embodiment of the present device in which a slide shaft receiving portion and a part of the slide shaft (a portion to be fitted into the slide shaft receiving portion) are formed in a polygonal shape.

FIG. 7 is an explanatory view of an operation of connecting the apparatus of the present application to a connection flange provided on a rotation shaft of a drive motor and a connection flange provided on a top of an earth auger, and also illustrates a connection release operation of the apparatus of the present invention. FIG.

FIG. 8 is a plan view illustrating that the device of the present invention is attached to the drive motor and the earth auger in any direction centering on the work machine.

FIG. 9 is a perspective explanatory view showing a conventional connection type middle flange connection method between a drive motor and an earth auger.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Rotating axis of drive motor 2 Connection flange (of drive motor) 3 Connection flange (of drive boss) 4 Slide shaft receiving part 5 Vertical slide hole 6 Slide shaft holding plate 7 Drive boss 8 Earth auger 9 Connection flange (Earth) 10 Attached to the top of the auger 10 Connection flange (of the earth auger connection) 11 Slide shaft 12 Slide pin 13 Earth auger connection 14 Drive motor 15 Fluid passage 16 Safety hook 17 Boom 18 Drilling blade 19 Boss 20 Rotating bearing Part 21 Connection bolt hole 22 Connection bolt hole 23 Work machine 24 Connection bolt 25 Bolt hole of connection flange provided on drive motor rotating shaft 26 Bolt hole provided on connection flange at top of earth auger

Claims (4)

(57) [Claims] 1. A drive having a connection portion for connecting a rotating shaft of a drive motor suspended from a work machine, and a connection portion for connecting a ground auger connection body described below to the connection portion. Boss, on the other hand, has a connection portion with the earth auger, and the connection portion has
A connection boss that connects to a connection portion provided on the drive boss is configured, and a connection boss of the earth auger connection body is connected to the connection portion of the drive boss so as to be vertically slidable and rotatable back and forth. A connection device for connecting an earth auger and a drive motor suspended from a working machine. 2. A connection flange (3) detachably connected to a connection flange (2) provided integrally with a rotation shaft (1) of a drive motor suspended from a tip end of a working machine boom. A boss formed integrally with the flange (3) and having a lower portion formed with a slide shaft (11) of a ground auger connector (13) and a rotary shaft receiving portion (4) for receiving a rotation shaft of a drive motor, as a unit with the flange (3). (19), and a driving boss () having a configuration in which slide shaft pressing plates (6) and (6) having vertically elongated slide holes (5) are provided in parallel on both left and right sides of the boss (19). 7) and, on the other hand, a connection flange (10) for connecting to a connection flange (9) provided on the top of the earth auger (8), and the flange (10) is attached to the slide shaft holding plate (6) (6). ) Portion thereof with vertically slide erected a slide shaft (11) to escape fitted to the sliding shaft receiving portion (4), the said shaft (1
At an appropriate position of 1), there is an earth auger connector (13) having a configuration in which a slide pin (12) that is inserted into the vertically elongated slide hole (5) and slides up and down is provided horizontally on the left and right. A slide pin (12) is inserted into a vertically elongated slide hole (5) of the boss (7), and a slide shaft (11) is inserted between the slide shaft holding plates (6) and (6),
The earth auger and a working machine boom (1) according to claim 1, characterized in that it has a structure in which the driving boss (7) and the earth auger connector (13) are integrally formed.
Connection device for driving motor (14) suspended in 7). 3. A connection device between an earth auger and a drive motor suspended from a working machine boom according to claim 2, wherein a fluid passage is provided in the slide shaft. . 4. A safety hook (16) for hooking a slide pin (12) at an appropriate position above a slide shaft holding plate (6) on both sides of the slide shaft receiving portion (4). 4. The connection device according to claim 3, wherein the earth auger is connected to a drive motor suspended from a work implement boom.