JPH053393U - Excavation device in excavation drill bucket - Google Patents

Abstract

(57) [Summary] [Purpose] Soil that adheres closely to the inside of the drill bucket of an excavator
It has been designed so that it can be discharged without causing noise or vibration. [Structure] From the gulliver drive 3 side of the excavator to the support rod 7
Is arranged so as to project downward, and an earth-discharging plate 8 that can move up and down in the drill bucket 5 is configured to be selectively attached to the lower end of the support rod 7 and the drill bucket 5.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a soil discharging device capable of discharging soil compacted into a drill bucket of an excavator in the Benners method.

[0002]

[Prior Art]

 When performing excavation work using the Benners method, the drill bucket attached to the lower end of the geriver is rotated by the drive of the geriver drive. However, the excavated soil adheres to the inner surface of the drill bucket, and the excavation efficiency decreases, so it is necessary to discharge the soil adhered to the drill bucket. For this reason, in the past, the drill bucket was vibrated up and down, or the burial drive was inverted to invert the drill bucket and loosen the adhered soil for soil removal.

[0003]

[Problems to be solved by the device]

 Conventionally, the drill bucket is oscillated up and down or inverted in order to discharge the soil stuck to the drill bucket, but in that case, the outer and inner guerrors hit each other and a loud metallic noise is produced, or noise is generated. However, there was a problem that vibration was generated when reversing. In particular, when the excavation site is in the diluvial viscosity layer, the excavated soil adheres to the inside of the drill bucket and it becomes more difficult to discharge the soil, which further increases the problems of noise and vibration and reduces excavation efficiency. Therefore, an object of the present invention is to solve these problems and to discharge soil compacted in a drill bucket without causing noise or vibration.

[0004]

[Means for Solving the Problems]

 The present invention relates to an excavator in which a drill bucket can be rotated by rotating a gulliver drive, in which a supporting rod projects downward from a casing guide of the gulliver drive, and the excavator can move vertically in the drill bucket. An earth removal device in a drilling drill bucket configured to selectively attach a plate to a lower end of a support rod and a drill bucket.

[0005]

[Action]

 In the above-mentioned soil removal device in the excavation drill bucket, the soil removal plate is fixed to the upper end of the drill bucket away from the support rod on the casing guide side during excavation, and the excavation is performed by rotating the drill bucket. When discharging compacted soil into the drill bucket, attach the soil plate to the lower end of the support rod on the casing guide side, away from the drill bucket side. Then, by lowering and raising the gel drive in this state, the soil discharging plate is raised and lowered in the drill bucket, and the compacted soil is discharged into the drill bucket.

[0006]

【Example】

 An embodiment of the present invention will be described with reference to FIGS. A holding member 3a of the gulliver drive 3 is provided along the vertical guide 2 of the excavator main body 1, and the gulliver drive 3 is swung up and down by the elevating means 3b. Further, the gerriver 4 rotated by the geriver drive 3 penetrates the center hole of the geriver drive 3 and its upper end is rotatably and vertically hung from the upper portion of the excavator main body 1. A drill bucket 5 is attached to the lower end of the gulliver 4, and the drill bucket 5 is lowered and the drill bucket 5 is rotated at the lower part guided by the casing C by the rotation drive of the gulliver drive 3 so that the drill bucket 5 can be excavated.

A casing guide 6 is provided at the lower end of the gulliver drive 3, and two supporting rods 7 made of square pipes and the like project downward from the casing guide 6. In this embodiment, the support rod 7 can be attached to and detached from the casing guide 6 by passing bolts through the through hole 7a at the upper end of the support rod 7 and the through hole 6a of the casing guide 6. An earth-draining plate 8 is detachably provided at the lower ends of the two support rods 7, and the earth-draining plate 8 is separated from the support rod 7 at the time of excavation, and a stopper 11 to be described later straddles the horizontal rod 5a of the drill bucket. In this way, the soil discharging plate 8 can be attached to the upper horizontal bar 5a of the drill bucket 5. The soil discharging plate 8 is sized so that it can move up and down in the drill bucket 5 to discharge the soil adhered to the inner peripheral surface thereof, and the soil discharging plate 8 does not hit the reinforcing material 5b of the drill bucket 5 when rising. In order to prevent this, a notch 8a is provided as shown in FIG. When excavating the soil after excavation, pull up the drill bucket 5 from the casing C, move the gulliver drive 3 to the upper part, and leave a space between it and the drill bucket 5, and support it at the lower end of the casing guide 6. The rod 7 is suspended, the earth removal plate 8 is attached to the lower end of the support rod 7 as described later, and the earth removal plate 8 is removed from the drill bucket 5. Next, the soil discharging plate 8 is moved up and down in the drill bucket 5 to discharge soil.

A mounting pipe 9 connected to the support rod 7 is provided on the soil discharging plate 8 so as to project upward, and a through hole 9 a of the mounting pipe 9 and a through hole 7 b at the lower end of the supporting rod 7 are provided at the time of soil discharging. With the bolt nut held in the connected state shown in FIG. 3, the soil dumping plate 8 can be raised and lowered in the drill bucket by raising and lowering the gulliver drive 3. Further, a pair of stopper holding members 10 are provided on the upper surface of the soil discharging plate 8 respectively, and a stopper 11 is inserted into the pair of stopper holding members 10 to move the soil discharging plate 8 to the side of the drill bucket 5 as shown in FIG. It can be locked across the rod 5a. In addition, when the end portion of the stopper 11 is bent into an L-shape and the end portion is in the lower position due to its own weight as shown in FIG. 2B, the stopper rod 12 provided in the stopper holding member 10 prevents the stopper 11 from coming off. Has become. Further, when the soil discharging plate 8 is separated from the drill bucket 5, the stopper 11 can be rotated counterclockwise as shown by the arrow in FIG. 2B so that the stopper can be pulled out.

[0009]

[Effect of the device]

 According to the soil discharging device in the excavating drill bucket of the present invention, since the soil discharging plate is moved up and down in the drill bucket, no noise or vibration is generated unlike the conventional soil discharging operation. Further, even if the soil is compacted in the drill bucket, the soil that adheres can be easily discharged, and the excavation efficiency can be improved.

[Brief description of drawings]

FIG. 1 is a schematic view of an excavator equipped with the soil discharging device of the present invention.

FIG. 2 is a perspective view of an earth discharging plate and a stopper.

FIG. 3 is a perspective view showing a connection state between a support rod and an earth discharging plate and a perspective view of the support rod.

FIG. 4 is a perspective view showing a state in which the earth discharging plate is locked to the upper portion of the drill bucket.

[Explanation of symbols]

 3 Gulliver drive 4 Gulliver 5 Drill bucket 7 Support rod 8 Soil plate

Front page continuation (72) Yuichi Nishizono Yuichi Nishizono Fujita Co., Ltd. 4-6-15 Sendagaya, Shibuya-ku, Tokyo

Claims (1)

[Claims for utility model registration] 1. An excavator main body is provided with a gulliver drive that can be moved up and down, and a drill bucket is provided at the lower end of the gulliver that is rotated by the gulliver drive and can be moved up and down.
A support rod is projected downward from the casing guide of the gulliver drive, and an earth-discharging plate that can move up and down in the drill bucket is configured to be selectively attached to the lower end of the support rod and the drill bucket. Excavating device in excavating drill bucket.