JP2583776Y2 - Auger screw removal 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 auger screw discharging apparatus for cleaning and discharging earth and sand adhering to an auger screw.

[0002]

2. Description of the Related Art As an excavator for excavating a pit in the ground, an excavator equipped with an auger screw 1 is used as shown in a side view in FIG. 6 and a front view in FIG. In this excavator, a drive unit 4 is mounted on a leader mast 3 supported upright by a work machine 2 installed on the ground so as to be able to move up and down, and an upper end of an auger screw 1 is connected to a lower portion of the drive unit 4. The ground is excavated by the excavating head 5 at the lower end of the auger screw 1 by the rotation of the auger screw 1 by the driving unit 4, and the screw blade 1a
, The excavated earth and sand is transported upward and discharged, and the drive unit 4 is sequentially lowered to excavate a pit.

In such an excavator, when the auger screw is pulled up after excavation, it is pulled up with a large amount of soil attached to the screw blades 1a of the auger screw 1, which hinders the next excavation.

Therefore, conventionally, a washing water jet nozzle and a scraping plate for earth and sand are provided around the auger screw 1 installed on the ground, and washing water is sprayed on the earth and sand attached to the screw blade 1a, and the scraping plate is used. Earth auger cleaning device with scraping off (Japanese Utility Model Publication No. 2-305552)
There is.

[0005]

However, even if the rubber-like scraping plate is applied to the screw blade 1a as in the above-mentioned conventional apparatus, the soil and sand cannot be sufficiently removed, and the washing water injected from the injection nozzle cannot be removed. Since only parallel streaks are formed in the earth and sand attached to the auger screw 1, it is not possible to fragment and crush and remove the earth and sand, thereby reliably removing the earth and sand attached to the screw blades of the auger screw. There was a problem that it was not possible.

In view of the above, the present invention has been made to provide an auger screw discharging apparatus capable of efficiently and surely removing earth and sand adhering to the auger screw.

[0007] In order to solve the above-mentioned problems of the prior art, the present invention provides a jet water jet nozzle provided at a fixed position for making a spiral streak in earth and sand attached to an auger screw, and a jet water jet nozzle. A jet water injection nozzle which is provided at an opposing position so as to be vertically swingable and has a vertical streak and a spiral streak in the attached sediment, and a discharge hopper above the jet water injection nozzle. A rotatable wire brush that is provided in contact with the screw blades of the auger screw so as to overlap with the screw blade of the auger screw. It is characterized by doing.

[0008]

[Action] After excavating a pit, the drive unit is raised, and the auger screw is pulled up while rotating forward. When the washing water is injected from the jet water injection nozzle that fixes the position in the discharging hopper and the jet water injection nozzle that swings up and down with the lifting, the auger screw is jetted by the jet water that is injected from the jet water injection nozzle whose position is fixed. Spiral streaks are formed in the earth and sand adhering to it due to the relative action of the upward movement of the water, and the spiral water with amplitude is applied to the earth and sand by the jet water jetted from the jet water jet nozzle that swings vertically A line is made. As a result, the soil adhering to the screw blade is subdivided by the streaks by the jet water, and the soil is separated from the screw blade only by jet water jet. The earth and sand that could not be separated by the jet water alone is rubbed against the wire brush when the screw blade moves upward and is eliminated. Also in this case, since the earth and sand are finely divided as described above, they are easily peeled and removed. The earth and sand removed from the screw blades is mixed with water, discharged from the discharging hopper, and collected as appropriate.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to embodiments shown in the drawings.

The discharging device 6 has a box-shaped discharging hopper 7 installed on the ground. On the upper and lower surfaces of the discharging hopper 7, insertion holes 8 through which the auger screw 1 is inserted as densely as possible are provided.
9 is opened, and screw blades 1a of the auger screw 1 are provided in the discharging hopper 7 for 1 to 3 pitches.

A jet water jet nozzle 10 whose position is fixed and a jet water jet nozzle 11 that can swing vertically are jetted jet water toward the auger screw 1 on both sides of the lower portion inside the discharging hopper 7. It is arranged as follows.

A wire brush 12 is rotatably provided on both left and right sides (only one is shown in the figure) of the auger screw 1 above the jet water injection nozzles 10, 11. The wire brush 12 is provided on a shaft 16 rotatably supported between bearings 13 and 14 between upper and lower surfaces of the soil discharging hopper 7 and driven by a motor 15.
The outer periphery of the wire brush 12 is located at a position close to or in contact with the shaft portion 16 of the auger screw 1 and overlaps the screw blade 1a. The wire brush 12 has a structure in which a plurality of (three in the figure) disk-shaped wire brushes are fixed to the shaft 16 at intervals in the vertical direction in order to facilitate contact with the screw blade 1a.

An outlet 17 for discharging earth and sand mixed with water is opened at one lower side of the earth discharging hopper 7.
It is connected to a tank or the like (not shown) through a duct 18 and is collected.

FIGS. 4 and 5 show an example of a swinging mechanism of the jet water jet nozzle 11 which shakes the head in the vertical direction. FIG. 4 shows a plan view, FIG. 5 shows a side view, and FIG. The jet water injection nozzle 11 is supported by a swing shaft 20 supported by bearings 19, 19 fixedly mounted on the base so as to be vertically swingable,
A cylinder 21 is attached to a side surface of the jet water injection nozzle 11, and a piston 23 of a rod 22 is slidably fitted thereto. The other end of the rod 22 is connected to an eccentric pin 26 on a disk 25 rotated by a motor 24, and the eccentric rotation of the eccentric pin 26 causes the rod 22 to reciprocate and swing the jet water injection nozzle 11 up and down. It is made to let. However, the swing mechanism can employ any other appropriate conventional means.

Pressurized water is supplied to the jet water injection nozzles 10 and 11 from hoses 27 and 28 from a washing water supply source.

Next, the operation of the above embodiment will be described.

After excavating a pit in the ground with the auger screw 1, the drive unit 4 is raised while the auger screw 1 is rotating forward, and the auger screw 1 is pulled up.

When the washing water is jetted from the jet water injection nozzle 10 for fixing the position in the discharging hopper 7 and the jet water injection nozzle 11 swinging up and down with the lifting, the jet water injection nozzle 10 for fixing the position is obtained. As shown by line A in FIG. 8, a spiral streak is formed in the earth and sand adhering to the auger screw 1 by the relative action of the auger screw 1 by the upward movement of the jet water injected from the jet water, and the jet swings vertically. A spiral streak having an amplitude is formed by the jet water jetted from the water jet nozzle 11 as shown by a line B in FIG. By these, screw blade 1
The earth and sand adhering to a is finely divided by the streaks A and B by the jet water, and the earth and sand can be separated from the screw blade 1a only by jet water jet.

The earth and sand not separated by the jet water alone comes into contact with the wire brush 12 when the screw blade 1a moves upward, and the rotation of the wire brush 12 also removes the earth and sand stuck to the screw blade 1a.
Also in this case, as described above, the earth and sand are easily removed due to the fragmentation. The earth and sand removed from the screw blade 1a is mixed with water,
Is discharged to the outside and collected in tanks.

Thus, the screw blades 1a protruding above the discharging hopper 7 have no adhesion of earth and sand, so that the next pit excavation can be performed satisfactorily.

As described above, according to the present invention, the jet water jet nozzle jetted from the jet water jet nozzle for fixing the position and the jet water jet nozzle for swinging in the vertical direction adheres to the auger screw by the streaks of the jet water. Since the sediment is finely divided into a mesh shape, the separability of the sediment from the surface of the auger screw is increased, and the removal by the wire brush can be facilitated. In addition, since the wire brush rotates while conforming to the spiral shape of the screw blade, it is possible to remove all the earth and sand, and together these, reliably remove the earth and sand that adheres to the auger screw and is pulled up. Can be.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional side view of a central part of an earth removal device according to the present invention.

FIG. 2 is a front view showing the same half section in cross section.

FIG. 3 is a plan view showing the same half section in cross section.

FIG. 4 is a plan view showing an example of a swing mechanism of a jet water injection nozzle.

FIG. 5 is a side view of the same.

FIG. 6 is a side view showing an example of an excavator to which the present invention is applied;

FIG. 7 is a front view of the same.

FIG. 8 is an explanatory diagram showing a shape of a streak formed by jet water of a jet injection nozzle.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Auger screw 1a Screw blade 3 Leader mast 4 Drive unit 5 Excavation head 6 Discharge device 7 Discharge hopper 8 Auger screw insertion hole 9 Auger screw insertion hole 10 Jet water jet nozzle with fixed position 11 Vertically swingable jet water Injection nozzle 12 Wire brush 17 Discharge port 20 Swing axis

Continuation of the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) E21B 12/06

Claims (1)

(57) [Scope of request for utility model registration] 1. A box-shaped discharge hopper which is installed on the ground and has upper and lower surfaces with insertion holes for auger screws, wherein washing water is directed downward to the screw blades of the auger screw at a lower position inside the discharge hopper. A jet water injection nozzle is provided at a fixed position for injecting spiral streaks into the earth and sand adhered to the auger screw, and a vertically opposed swing is provided at a position opposed to the injection nozzle so as to be able to swing vertically. A jet water injection nozzle for inserting spiral streaks with amplitude in the direction, and a rotation that can be overlapped and contact with the screw blade of the auger screw provided in the earth removal hopper above this jet water injection nozzle A wire-type brush, and mesh lines are formed in the earth and sand by the jet water from the jet water jet nozzles. Dumping apparatus auger screw, characterized in that so as to earth unloading the sheet.