JPH07223717A - Tube type conveyer - Google Patents

Abstract

PURPOSE:To convey a large quantity of articles along a curved passage. CONSTITUTION:A rotary conveyer element 12 is contained in a tube 11. At least a part of the tube 11 is formed of a flexible material. The rotary conveyer element 12 is formed into a spiral strip with a plurality of segments 31 arranged adjoining to each other in their longitudinal direction. The segments 31 arranged adjoining to each other are swingably connected to each other around the axis orthogonal to the axis C of the spiral strip. The swinging motion axis having an angle to each of the segments 31 adjacent to the segment 31 is shifted at a specified angle other than 180 deg. viewed in the axial direction of the conveyer element 12.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tube conveyor used, for example, for transporting earth and sand excavated in civil engineering work, or for transporting powdery or granular materials in a steelmaking or cement factory.

[0002]

2. Description of the Related Art A conveyor of this type includes a tube and a rotary carrier housed in the tube, and the tube is formed of a straight iron pipe.
It is known that the carrier is formed by a screw provided with spiral blades around the central axis.

Another conveyor is a tube,
A rotary transporter housed in a tube is provided, the tube is formed of a rubber hose, and the transporter is formed of a coil spring.

[0004]

Among the above-mentioned conventional conveyors, the former conveyor can convey a large amount of conveyed articles but cannot convey conveyed articles along a curved path.

Further, the latter conveyor can convey a conveyed product along a curved path, but cannot transmit a large amount of conveyed products because the transmission torque of the coil spring is small.

An object of the present invention is to provide a tube conveyor which can carry a large amount of goods along a curved path.

[0007]

SUMMARY OF THE INVENTION A tube conveyor according to the present invention comprises a tube and a rotary carrier housed within the tube, the tube conveyor comprising:
At least a portion of the tube is formed of a flexible material,
The carrier is formed into a spiral strip plate shape with a plurality of divided pieces arranged adjacent to each other in the length direction, and the adjacent divided pieces can swing about the axis orthogonal to the axis of the spiral. Is connected to one of the divided pieces, and the swing center axis lines respectively formed by the divided pieces on both sides of the divided piece are 1 when viewed from the axial direction of the carrier.
It is shifted by a predetermined angle other than 80 degrees.

Further, instead of forming at least a part of the tube with a flexible material, a bent portion may be provided on at least a part of the tube. The tube can then be made of a rigid material such as iron.

[0009]

In the tube conveyor according to the present invention, since at least a part of the tube is made of a flexible material, the tube can be bent so as to form a desired bent conveying path.

Further, the carrier is formed into a spiral strip plate shape by a plurality of divided pieces arranged adjacent to each other in the lengthwise direction,
Adjacent divided pieces are connected so as to be swingable about an axis line orthogonal to the axis of the spiral, and one divided piece and a swing center axis line formed with the adjacent divided pieces are the axis of the carrier. When viewed from the direction, the carrier is displaced by a predetermined angle other than 180 degrees, so that the carrier can be bent like that to the tube at the connecting portion of the split piece, and the carrier can be rotated in that state. Moreover, the transmission torque of the carrier is large.

[0011]

Embodiments of the present invention will be described below with reference to the drawings.

In the following description, "front and rear" means that, with reference to FIG. 1, the right side of FIG. 1 is the front and the opposite side is the rear.

Referring to FIG. 1, the tube conveyor is
A tube that extends forward from the low point L to the high point H
11, a carrier 12 housed in the tube 11, and a drive device 13 mounted at the rear end of the tube 11 and driving the carrier 12 for rotation.

The tube 11 has a support member 15 on a horizontal base 14.
It is composed of a horizontal first tube 21, which is fixed via a horizontal second tube 22 which is connected to the front end of the first tube 21, and a third tube 23 which is connected to the front end of the second tube 22. A substantially S-shaped bent portion 24 is provided at the rear portion of the third tube 23. The first tube 21 is made of iron pipe, and the second and third tubes 22 and 23 are made of wire-containing rubber hose.
The first tube 25 is provided with an upward charging port 25, to which the bottom of a charging hopper 26 is connected. Third tube 23
An outlet 27 is provided at the front end of the. A discharge hopper 28 is provided below the discharge port 27.

The carrier 12 has an axial centerline C which is concentric with the central axis of the tube 11, and is formed into a spiral strip plate shape by a plurality of divided pieces 31 arranged adjacent to each other in the longitudinal direction thereof. There is. The twist of the spiral is a right-hand thread, as seen later.

With reference to FIGS. 2 and 3, the split piece 31 is shown.
Is integrally formed by forging, and is formed in a 3/4 annular shape having a central hole when viewed from the axial direction of the carrier 12. A concave fitting portion 32 is provided at the center of the front edge portion of the divided piece 31, and a convex fitting portion 33 is provided at the center of the rear edge portion. A pair of front pin holes 34 are concentrically provided on both sides of the opening of the concave fitting portion 32 with the opening therebetween. A rear pin hole 35 is provided in the middle of the height of the convex fitting portion 33.

The center axis M of the front pin hole 34 and the center axis N of the rear pin hole 35 are both orthogonal to the axis center line C of the carrier 12 and deviated from each other by 270 degrees when viewed from the axial direction of the carrier 12. ing. The feed pitch P is set to 1 by 360 degrees per rotation of the carrier 12.
When the pitch is set, the divided pieces 31 have a length corresponding to 3/4 pitch (see FIG. 4).

The concave fitting portion 32 of the rear split piece 31 and the convex fitting portion 33 of the front split piece 31 are fitted to each other, and the connecting pin 36 is inserted into the front pin hole 34 and the rear pin hole 35. Accordingly, the front divided piece 31 and the rear divided piece 31 are swingably connected about the connecting pin 36. After insertion, the connecting pin 36 is fixed to the concave fitting portion 32 side by welding.

Here, as an example, the shapes of the tube 11 and the carrier 12 will be described by giving concrete numbers. tube
The inside diameter D1 of 11 is 150 mm, and the outside diameter D2 of the carrier 12 is 138.
mm, and there is a gap of 12 mm between them. Carrier 12
The pitch P is 125 mm. Also, the tube bending part 24
The bending radius R is 1000 mm.

Referring to FIG. 6, the front end of the first tube 21 and the rear end of the second tube 22 are connected by a pair of outer fixing rings 41, and the front end of the carrier 12 inside the first tube 21 and the inside of the second tube 22. The rear end of the carrier 12 is connected by a pair of inner rotating rings 42.

The fixed ring 41 on the rear side is fitted on the front end portion of the outer surface of the first tube 21 and is welded thereto.
And a large diameter portion 44 connected to the front end of the small diameter portion 43. A flange 45 is provided at the front end of the large diameter portion 44. The front side fixing ring 41 includes a small diameter portion 43 which is fitted on the outer surface rear end portion of the second tube 22 and screwed thereto, and a large diameter portion 44 which is continuous with the rear end of the small diameter portion 43. A flange 45 is provided at the rear end of the large diameter portion 44. Large diameter part 44 of both fixing rings 41
The grease enclosing holes 46 are provided in each. The flanges 45 of both fixing rings 41 are overlapped and the clamp member 47
Being tightened by.

The rotating ring 42 on the rear side is arranged so as to surround the frontmost divided piece 31 of the carrier 12 in the first tube 21 and insert the rear portion into the front end of the first tube 21. The rotating ring 42 on the rear side and the divided piece 31 at the front end are integrated by welding. A flange 48 is provided on the front portion of the outer surface of the rear rotary ring 42. The front rotating ring 42 is arranged so as to surround the rearmost divided piece 31 of the carrier 12 in the second tube 22 and insert the rear part thereof into the front end of the second tube 22. Front rotating ring 42 and the same end piece 31
Are integrated by welding. A flange 48 is provided on the rear portion of the outer surface of the front rotary ring 42. The flanges 48 of both rotating rings 42 are superposed and fitted into the large diameter portion 44 of both fixing rings 41. Same large diameter part 44 and flange
A pair of bearing metals 51 are interposed between the 48. Two O-rings 52 are attached to the outer surface of the bearing metal 51. A pair of bottomed holes 53 are provided so as to face each other in the circumferential direction of the facing surfaces of both flanges 48, and a positioning / driving force transmission pin 54 is provided so as to straddle the paired bottomed holes 53. Has been inserted.

Referring to FIG. 7, the concave fitting portion 32 of the frontmost divided piece 31 of the carrier 12 in the first tube 21 and the convex of the rearmost divided piece 31 of the carrier 12 in the second tube 22. The shape fitting portion 33 is fitted, but is not connected by the connecting pin 36. Therefore, by attaching and detaching the clamp member 47, the first
The tube 21 and the second tube 22 are easily attached and detached, and the carrier 12 is also connected and released.

An unillustrated tube for a joint is, for example,
If it is inserted between the first tube 21 and the second tube 22, the entire length of the tube 11 can be freely changed.

The drive unit 13 includes a geared motor 61 mounted on the base 14 and a coupling to the output shaft of the motor 61.
And a vertical rotating disc 63 connected via 62 and arranged to close the rear end opening of the first tube 21.

As shown in detail in FIG. 8, on the front side surface of the disk 63, the divided piece 31 at the rearmost end of the carrier 12 in the first tube 21 is provided.
A front projecting horizontal cylindrical portion 64 that surrounds the first tube 21 and is fitted to the rear end of the first tube 21 is provided, and the rearmost divided piece 31 is fixed to the inner surface thereof by welding.

The above-mentioned first tube 21 and second tube 22
The small diameter portion 43 of the fixing ring 41 used to connect the two is the first tube
It is fixed to the outer surface of the rear end of 21. A bearing metal 51 is interposed between the large diameter portion 44 of the fixed ring 41 and the cylindrical portion 64 of the disc 63.

A loading object is loaded into the loading hopper 26, and the motor 61
When the carrier 12 is rotated in the counterclockwise direction by the operation of, the carrier 12 is of course smoothly rotated in the straight portion of the tube 11 as shown in FIG.
As shown in, even in the bent portion 24, since the adjacent divided pieces 31 are freely swung by the pin 36 connecting the divided pieces 31 together, the carrier 12 can be smoothly rotated.

Due to the rotation of the carrier 12, the conveyed products having entered the tube 11 through the input port 25 are sequentially conveyed forward in the tube 11 and finally discharged through the discharge port 27, and the discharge hopper. Accepted by 28.

When an article is conveyed through the bent portion 24, the bent portion
While the conveyed goods are conveyed upward in 24, some of the conveyed goods fall. The falling conveyed items concentrate on the lower end of the bent portion 24, but are pushed up by the conveyed items conveyed from the rear, and gradually conveyed upward.

In the above description, one split piece 31 and the swinging central axis formed with the split pieces 31 on both sides of the split piece 31 are the carrier elements.
Seen from the 31 axis, it was offset by 270 degrees,
The angle may be 90 degrees. An angle of 270 degrees or 90 degrees is a preferable angle corresponding to the two orthogonal axes of the cross shaft joint. However, the above-mentioned angle does not necessarily need to be 270 degrees or 90 degrees because it continuously shifts for each divided piece 31, and may be 315 degrees, for example.

Further, in the above description, the rotational torque of the motor 61 acts on the rear end of the carrier 12, but the drive device 13 is arranged at the high place H so that the rotational torque of the motor 61 is conveyed. If it acts on the front end portion of the child 12, as the carrier 12 rotates, the leading divided piece 31 pushes the trailing divided piece 32, and the rotating torque acts on each divided piece 31. The transmission torque is not concentrated on the connecting pin 36 and acts.

[0033]

According to the present invention, it is possible to bend the tube so as to form a desired curved conveyance path,
Since the carrier can be bent in such a manner as a tube at the connecting portion of the divided pieces, and the carrier can be rotated in that state, and the transfer torque of the carrier is large, a large amount of goods can be conveyed. Can be conveyed along a curved path.

[Brief description of drawings]

FIG. 1 is a side view of a conveyor according to the present invention.

FIG. 2 is a front view of a divided piece of a carrier of the conveyor.

FIG. 3 is a side view of the same divided piece.

FIG. 4 is a sectional view of a straight tube portion of the conveyor.

FIG. 5 is a cross-sectional view of the bent portion of the tube.

FIG. 6 is a cross-sectional view of a connecting portion of the tube.

FIG. 7 is a cross-sectional view of the connecting portion of the tube when separated.

FIG. 8 is a cross-sectional view of a connecting portion between a driving device and a carrier.

[Explanation of symbols]

 11 Tube 12 Carrier 24 Tube bent part 31 Divided piece C Carrier axis M Divided piece swing center axis N Divided piece swing center axis

Claims (2)

[Claims] 1. A tube conveyor comprising a tube 11 and a rotary carrier 12 housed in the tube 11, wherein at least a part of the tube 11 is made of a flexible material, and the carrier 12 is , Which are formed in a spiral band plate shape by a plurality of divided pieces 31 arranged adjacent to each other in the lengthwise direction, and the adjacent divided pieces 31 share the axes M and N orthogonal to the axis C of the spiral. Swivelingly connected, one split piece 31 has swing center axes M and N respectively formed with the split pieces 31 on both sides thereof.
A tube conveyor that is displaced by a predetermined angle other than 180 degrees when viewed from the axial direction of the carrier 31. 2. A tube conveyor provided with a tube 11 and a rotary carrier 12 housed in the tube 11, wherein at least a part of the tube 11 is provided with a bent portion 24,
The carrier 12 is formed into a spiral strip plate shape by a plurality of divided pieces 31 arranged adjacent to each other in the length direction thereof, and the adjacent divided pieces 31 are formed.
In the same manner, however, one split piece 31 is swingably connected about axes M and N orthogonal to the axis C of the spiral, and swing center axes M and N respectively formed with the split pieces 31 on both sides of the split piece 31. , A tube conveyor that is displaced by a predetermined angle other than 180 degrees when viewed from the axial direction of the carrier 31.