JPH0629267Y2 - Earth auger intermediate anti-sway device - Google Patents

Description

[Detailed Description of Device] a. BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an earth auger anti-sway device for excavating a hole in the ground by an auger guided by a leader and descending.

B. 2. Description of the Related Art A conventional earth auger is one in which the intermediate anti-sway device D is removed in FIG. In such a multiple auger, the auger drive motor A is still in a high position at the beginning of excavation of the hole, and the pillar portion of the auger B is exposed for a long time above the surface anti-vibration device C that is always used near the ground surface. In addition, since the ground is generally hard on the surface of the earth and there are residual buried objects, etc., a shock is generated at the lower end of the auger at the beginning of drilling the hole, which causes the auger B to swing and distort the drilling position and direction. there were. In addition, the above-described shake of the auger may damage the speed reducer of the drive motor A and the like. In order to solve this drawback, it is good to provide an intermediate sway prevention device between the drive motor and the surface sway prevention device, and hang this device with a suspension wire and move it as the drive motor moves up and down. It is extremely dangerous because the intermediate anti-vibration device will suddenly drop if it is cut accidentally.

C. DISCLOSURE OF THE INVENTION The present invention has been made in consideration of the above-mentioned problems, and even if the suspension wire for suspending the intermediate anti-vibration device is cut during the work, it immediately stops at the pillar part of the auger and the member below. The purpose is to obtain an extremely safe earth auger intermediate anti-sway device that does not crash into.

D. Means for Solving the Problems In the present invention, as shown in FIG. 1 to FIG. 3, when the intermediate sway preventing device D is provided in the auger columnar body B1, the leader mast 1 is provided with the shelf-like plate 20. Fixed parallel guide bar 2
The holding portion 19 extending from the back of the main body D1 of the intermediate anti-vibration device is fitted to the above, and the hanging wire 10 is attached to the anti-vibration device D.
And the hanging wire connecting member (winding drum 15,
(Drum shaft 16, etc.) is movable vertically with respect to the main body D1 of the anti-sway device for a certain section in the vertical direction, and the link 24 with a claw is pivotally attached to the main body so as to project to the back of the main body facing the shelf plate 2. Then, the base end of the link 24 is pivotally attached to the hanging wire connecting member side, and when the auxiliary wire is hung, the claw 25 descends due to the rise of the connecting member to come off the shelf plate 20, and the hanging wire is cut. The intermediate sway prevention device of the earth auger in which the claw 25 is raised by the lowering of the coupling member and can be locked to the shelf-like plate 20.

D. Action When the intermediate anti-sway device D is located in the auger column portion B1 above the ground anti-sway device C, when the suspension wire 10 is cut, the winding drum 15 descends due to the weight, and the shaft end of the drum shaft 16 The lower end of the hanging link 23 attached to the bottom plate 2
It descends until it collides with 7. By the descent of the hanging link 23 at this time, the claw 25 ascends around the pin 28 as a fulcrum and engages with the upper surface of the front green of the shelf-like plate 20, and the intermediate anti-vibration device D stops falling. By raising the auger drive motor A,
The winding drum 1 is connected to the suspension wire 10 by the winding wire 10.
When the wire 5 is hoisted, the wire 10 is fully extended, the winding drum 15 rises, the drum shaft 16 also rises, and the claw 25 descends obliquely downward with the pin 26 as a fulcrum via the hanging link 23 to form a shelf shape. Does not lock to the front green of the plate 20. Therefore, during suspension of the intermediate sway prevention device D by the suspension wire 10, the device D moves up and down the column body portion B1 of the leader mast according to the up and down movement of the auger drive motor A.

F. EXAMPLE FIG. 4 shows an earth auger having an intermediate anti-vibration device. In the figure, A is an auger drive motor, which is slidably attached to two guide rods 2 provided on a leader mast 1 via a shelf plate 20, and is suspended by a main wire 3. B is an auger drive motor A, which has three augers connected at its upper end. C is a ground anti-sway device, which is suspended by the auxiliary wire 4. Reference numeral 5 is an excavation claw, 5a is an agitation protrusion, and 6 is an interference for deciding the positions of the excavation claws 5 so that the circular holes excavated by the three augers B intersect with each other, that is, they become continuous holes. It is a device. The leader mast 1 is erected by a boom 8 extending from the vehicle body 7. Reference numeral D denotes an intermediate anti-vibration device, which is suspended by a suspending wire 10 whose upper end is fixed to the main body 9 of the auger drive motor A, and is configured as shown in FIGS. In the figure, 11 is a triple anti-vibration cylinder that inserts the column body portion B1 of the auger B rotatably and vertically slidably,
As is clear from FIG. 2, two parallel plates 12 project rearward from both sides of the central cylinder.
A front plate 13 and a rear plate 14 for mounting the winding drum 15 are fixed between them. 27 is a bottom plate. 12,
13, 14, and 27 are main bodies D1 for holding the anti-sway cylinder 11.
Make up. 19 is at the rear end of the parallel plate 12, that is, the main body D1
The guide rod 2 is pivotally supported on the upper and lower sides so as to extend to the back of the
It is a wrapping portion composed of a groove roller mounted rotatably so as to surround the. As shown in FIG. 1, the winding drum 15 contains a coil spring 18 having one end fixed to the drum shaft 16 and the other end fixed to the inner surface of the drum. 21 is the front plate 13
Two vertical guide plates are installed inside the rear plate 14 and the rear plate 14 so as to form vertical groove gaps.
The hanging links 23, 23a at both ends of the drum shaft 16 are housed in the space 1 so as to be vertically movable. 23 and 23a are rear plates 14
On the side of the front plate 13 and the upper side of the drum shaft 16, both ends of the drum shaft 16 are pivoted at their upper ends.
The lower end of 3 is pin-connected to the base end of the link 24 with the claw 25.
It has been eight. Then, the link 24 has a parallel plate 12 at the middle.
A fulcrum is supported by a pin 26 mounted between them, the claw 25 projects from the hole 14a of the rear plate 14, the drum shaft 16 descends together with the winding drum 15, and the lower end of the hanging link 23 is in contact with the bottom plate 27. In the state where the toe is raised and locked to the front green upper surface of the shelf-like plate 20, and the drum shaft 16 is raised and pulled up by the hanging link 23, the toe is lowered obliquely downward and the shelf-like plate 20 of the shelf-like plate 20 is lowered. It is designed to be off the front green. 10 is a hanging wire, and the upper end is an auger drive motor A
It is fixed to the main body 9 and the lower end of the winding is fixed to the drum 15. Reference numeral 17 denotes a support arm with a groove roller extending from the parallel frame 12 for pulling out and guiding the suspension wire 10 on the drum 15. When suspending the intermediate anti-vibration device D by the hanging wire 10, the hanging wire 10 is unwound from the drum 15 against the winding force of the coil spring 18, and the anti-vibration cylinder 11 causes the anti-vibration device C to be grounded. When reaching the upper surface of, the hanging wire 10 is wound so that the winding force of the coil spring 18 does not cause the drum 15 to rotate and loosen. 29 is the main body D1
The upper part of the take-up drum 15 projects from the large square hole in the center of the top plate, and the projecting parts such as the pins 26a hit the lower edge of the vertical guide plate 21 to prevent the drum 15 from rising above a certain level.

G. Advantageous Effects of the Invention The present invention makes it possible to move the hanging wire connecting member up and down with respect to the main body of the anti-sway device by a certain section when the intermediate anti-sway device is provided above the ground anti-sway device. The base end of the link with a claw pivotally attached to the above is pivotally attached to the side of the hanging wire coupling member, the intermediate sway prevention device is lifted by the hanging wire, and the claw retracts and projects according to the cutting of the hanging wire. Since the claws are adapted to be locked to the shelf-like plate, the intermediate anti-vibration device is prevented from immediately descending when the hanging wire is cut, so that the intermediate anti-vibration device does not collide with the lower member, and therefore extremely It has the advantage of being safe and free from damage to parts.

[Brief description of drawings]

1 is a partially cutaway side view of an embodiment of the present invention, FIG. 2 is a top view of the same, FIG. 3 is a reduced side view of the same, and FIG. 4 is a side view of an earth auger according to an embodiment. It is a figure. A in the figure
... auger drive motor, B1 ... auger column portion, B ... auger, D ... intermediate sway preventing device, D1 ... intermediate sway preventing device body, 1 ... leader mast, 2 ... parallel guide rod, 11 ... sway preventing cylinder, 12 ... parallel plate, 13 ... front plate, 14 ... rear plate, 15
... winding drum, 16 ... drum shaft, 19 ... (groove roller)
Enclosing part, 20 ... Shelf plate, 21 ... Vertical guide plate, 24 ... Link with claw, 25 ... Claw, 27 ... Bottom plate.

Claims (1)

[Scope of utility model registration request] 1. A hug portion extending from the back of the main body of the intermediate anti-vibration device to a parallel guide rod fixed to a leader mast through a shelf plate when the intermediate anti-vibration device is provided on the auger column. , The suspension wire is connected to the same anti-sway device, the suspension wire connecting member is movable vertically for a certain section with respect to the main body of the anti-sway device, The link with the claw is pivotally attached to the body of the anti-sway device so as to project to the back of the main body, and the base end of the link is pivotally attached to the suspension wire coupling member side, and when the suspension wire is suspended, the coupling member is raised. This is an intermediate anti-vibration device for an earth auger in which the claw descends and is disengaged from the shelf-like plate, and when the hanging wire is cut, the melon rises due to the descending of the coupling member and can be locked to the shelf-like plate.