JP2002211734A - Conveyor device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To carry an object to be carried in the same direction also at the time of rotation in both of forward and backward directions. SOLUTION: As for carrying blades 4A and 4B having semi-circular outer peripheral shapes on an outer periphery of a shaft 3, an outer peripheral top part 4Aa of the carrying blade 4A is disposed at prescribed pitch by being inclined to fall down on a base part 3a side of the shaft 3 on one side for an axis line of the shaft 3 and a carrying shaft 1 disposed so as to be inclined in a direction opposite to the carrying blade 4A at an intermediate position before and after the carrying blade 4A is provided on the other side. The carrying shaft 1 is inserted into a casing 2 and the object to be carried is carried in the same direction together with forward and backward rotation of the carrying shaft 1.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a conveyor device which can convey articles in the same direction both in forward rotation and reverse rotation.

[0002]

2. Description of the Related Art For example, in a conveyor for conveying powders, granules, slurries, etc., a screw blade b is helically wound around a screw shaft a as shown in FIG.
The transported material is transported between the casing and the casing c.

[0003]

For example, in the excavation propulsion work of the ground, when the excavated earth and sand is conveyed backward by using the above-mentioned conventional screw conveyor, the excavation head at the tip of the screw shaft a rotates clockwise. Has a habit of gradually deflecting to the right and, in the case of left rotation, deflecting to the left.

Therefore, when the deflection occurs as described above, the direction is corrected by reversing the screw shaft a. However, when the screw shaft a is reversed, the soil between the screw blades b causes the tip of the screw conveyer to move. It will be sent back in the direction, and the earth and sand will be compacted.

[0005] For this reason, even when the direction is corrected by reversing the screw shaft a, the direction can be reversed only temporarily, and as a result, there is a problem that the direction correction cannot be performed at will.

[0006] When the soil is viscous,
The viscous material adheres to the screw blade b and the screw shaft a and rotates together with the screw blades b and the screw shaft a, so that the conveyance ability is lost.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems of the prior art, and has an object to excavate a ground so that a conveyed object can be sent in the same direction regardless of the forward or reverse rotation. It is another object of the present invention to provide a conveyor device capable of easily correcting the direction in the case of (1) or preventing adhesion when conveying a viscous material.

[0008]

As a means for solving the above-mentioned problems, the present invention provides a transport blade having a semicircular outer peripheral shape on the outer periphery of a shaft, and one side with respect to the axis of the shaft, a vertex of the outer peripheral apex of the transport blade. Is provided at a predetermined pitch so as to incline to the base side of the shaft, and the other side is provided with a transport shaft disposed at an intermediate position between the front and rear of the transport blade and inclined in the opposite direction to the transport blade. The transport shaft is inserted into the casing so that the co-transported material is transported in the same direction when the transport shaft rotates forward and backward.

Due to this, the conveyed material is pushed from one end of the conveying blade to the outer peripheral apex due to its inclination, and conveyed to the outer peripheral apex when the shaft rotates in either the forward or reverse direction. An object is delivered to one end of the transport blade on the other side, and is pushed to the outer peripheral apex of the transport blade, whereby each transport blade sequentially sends the object in one direction.

Therefore, if the excavation direction is deflected and the excavation direction is reversed, even if the excavation direction is reversed, the earth and sand will not be sent forward, and the direction can be corrected reliably.

In addition, when switching between the forward and reverse rotations, there is an effect of shaking off the adhered matter adhering to the transport blades and the shaft, thereby preventing a decrease in the transport ability.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to embodiments shown in the drawings. FIG. 1 is a perspective view of one embodiment of a transport shaft 1 in a conveyor device according to the present invention, and FIGS. 2A and 2B show a casing 2 with the transport shaft 1 of FIG. It shows a plan view and a side view in cross section.

The transport shaft 1 has a semicircle-shaped transport blade 4A on one side with respect to the axis AA on the outer periphery of the cylindrical shaft 3 and a vertex 4Aa of the outer periphery of the transport blade 4A. Are inclined at a predetermined angle (45 ° in the illustrated example) so as to fall to the side 3a and fixed at a predetermined pitch, and the other side of the transport blades 4B, 4B,.
Are arranged and fixed at an intermediate position between the front and rear transfer blades 4A, 4A,... In the opposite direction to the transfer blade 4A at the same angle.

When viewed from the direction shown in FIG. 2A, the roots 4Ab, 4B at the ends of the transport blades 4A, 4B on each side.
b and the outer peripheral vertex portions 4Aa and 4Ba are configured to be substantially at the same position in the circumferential direction of the shaft 3.

The transport shaft 1 is inserted through a cylindrical casing 2 so that the outer periphery of each transport blade 4A, 4B is as close as possible to the inner peripheral surface of the casing 2.

Next, the operation of the above embodiment will be described with reference to FIG.

In FIG. 3, reference numeral 5 schematically shows a conveyed object so that its movement can be easily understood.
As shown in (A), the transported object 5 located at the end 4Ac of the exemplary transport blade 4A gradually moves rearward due to the rotation of the transport blade 4A due to the rotation of the transport shaft 1 in either the forward or reverse direction. (In the direction of the arrow in the figure) (FIG. 3)
(B) shown).

When the transported object 5 reaches the outer peripheral vertex 4Aa of the transport blade 4A as shown in FIG. 3 (C), the transported object 5 stays at that position, until the end 4Bc of the transport blade 4B on the other side arrives. It is at rest (shown in FIGS. 3D and 3E).

When the end 4Bc of the transport blade 4B on the other side reaches the transport position 5, the transport blade 4B causes the transport blade 4B to move as shown in FIG.
As shown in (F) and (G), the conveyed object 5 is pushed backward similarly to the case of the conveyer blade 4A on the one side.

In this manner, the conveying blades 4A, 4B
Are transported alternately due to the inclination of, and the transported object 5 is transported backward.

[0021]

As described above, according to the present invention, a conveyed object can be conveyed in the same direction regardless of whether the conveying shaft is rotating forward or backward. If the drilling shaft is used, even if the drilling head is reversed when the drilling direction is deviated, the excavated earth and sand will not be sent forward, and the direction correcting operation can be performed quickly and reliably.

Also, when the transport shaft is switched between the forward and reverse rotations, there is an effect of shaking off the deposits attached to the transport blades and the shaft,
It has a transport improvement effect.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an embodiment of a transport shaft according to the present invention.

FIGS. 2A and 2B show a state in which the transport shaft of FIG. 1 is inserted into a casing, wherein FIG. 2A is a plan view showing a cross section of the casing, and FIG.

FIGS. 3A to 3G are explanatory diagrams showing the operation of the present invention.

FIG. 4 is a side view in section of a casing showing a conventional screw conveyor.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Conveying shaft 2 Casing 3 Axis 4A, 4B Conveying blade 4Aa, 4Ba Outer peripheral apex 4Ab, 4Bb Root 4Ac, 4Bc End 5 Conveyed object

Claims (1)

[Claims] 1. A conveying blade having a semicircular outer peripheral shape on the outer periphery of a shaft, with one side inclined with respect to the axis of the shaft so that a vertex portion of the outer periphery of the conveying blade falls down to a base side of the shaft and at a predetermined pitch. The other side is provided with a transport shaft arranged at an intermediate position between the front and rear of the transport blade and inclined in a direction opposite to the transport blade, and the transport shaft is inserted into a casing, and the transport shaft is provided. A conveyor device wherein co-transported articles are conveyed in the same direction when the shaft is rotated forward and backward.