JP2000168929A - Continuous drawing type belt conveyor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To alter a conveying direction by one continuous drawing type belt conveyor, in this continuous drawing type belt conveyor composed of making a conveying distance be continuously drawable by installing a drawing belt storage part in the point midway in one long size belt. SOLUTION: A debris stacking part 16 is installed in the central part of a main pit, and two stowing parts are installed in the opposite direction as centering on this stacking part 16. Debris stowed in the stowing part on one side are conveyed to the stacking part 16 by way of a belt B1 traveling the top side, and transferred to a belt B8, then conveyed to a discharge part. A belt B2 turned up to an undersurface side at the stacking part 16 is three-dimensionally wrenched by two intermediate pulleys P2 and P3 whose respective turning shafts are shifted as far as 90 degrees, thereby turning its conveying surface sideways, and thus its traveling direction is altered by other intermediate pulleys P4 and P5. Successively, the conveying surface is altered downward again by two intermediate pulleys P6 and P7 where the turning shaft is shifted as far as 90 degrees, and thus it is turned up to the top side at the stacking part on the other. Then, the debris stowed in the stowing part on the other are conveyed to the stacking part 16 by way of a belt 5 traveling on the top side, and transferred onto the belt B8 and finally conveyed to the discharge part.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a continuous stretching type belt conveyor, and more particularly to transporting a shear excavated in a tunnel from a loading portion of a cutting face to a collecting portion, and changing a transport direction in the collecting portion. The present invention relates to a continuous stretching type belt conveyor that is conveyed to a payout unit.

[0002]

2. Description of the Related Art Conventionally, there is known a belt conveyor in which the traveling direction of one long belt is changed three-dimensionally by an intermediate pulley to change the traveling direction of the belt (for example, Japanese Unexamined Patent Publication (Kokai) No. SHO 59-59). -92808). this is,
By temporarily folding the belt traveling from the tail pulley on the loading side to the lower side with the intermediate pulley of the progress change part, and twisting the belt three-dimensionally with the other intermediate pulley inclined in the new traveling direction, This is to change the traveling direction of the belt.

[0003] On the other hand, in tunnel construction, when a waste excavated by an excavator is carried out, a continuous stretching type belt conveyor is often used to convey the cutting face from a loading section to a payout section. This is achieved by providing a stretchable belt storage unit in which a surplus portion of a single long belt is folded back and wound around a plurality of pulleys, and the belt is drawn out from the stretchable belt storage unit as the tunnel is excavated. Is continuously extended.

[0004]

In a tunnel excavation work, if a continuous stretching type belt conveyor is used, the belt can be stretched along with the tunnel excavation. Cannot change direction. Therefore, when excavating a main shaft that crosses the shaft at an angle from the shaft, the transport direction is changed by combining a plurality of belt conveyors instead of a single belt conveyor, which is not economical.

[0005] Further, when excavating in the opposite direction after excavating in one direction from the pit, the belt conveyor installed in one direction must be installed in the opposite direction. And when excavating simultaneously from the shaft into both directions of the main shaft,
Further, it is necessary to add a belt conveyor.

On the other hand, the belt conveyor described in the above-mentioned publication can change the traveling direction of the belt with a relatively simple configuration, but passes through the intermediate pulleys because the rotation shafts of both intermediate pulleys are arranged obliquely. The length of the belt is different between left and right, and the belt is easy to meander. Therefore, a device for correcting belt meandering is required.

Therefore, there arises a technical problem to be solved in order to be able to change the conveying direction with one continuous stretching type belt conveyor, and the present invention aims to solve this problem. I do.

[0008]

SUMMARY OF THE INVENTION The present invention has been proposed to achieve the above-mentioned object, and a three-dimensional twist of a single long belt is carried out by an intermediate pulley so that the conveying surface of the belt is conveyed. The belt conveyor is formed so as to change the direction and traveling direction of the belt, and a belt conveyor for extending the belt is provided in the middle of the belt so that the transport distance of the belt can be continuously extended and retracted. The two loading sections are provided in opposite directions around the section, and the transported article is transported from each loading section to the stacking section through a belt traveling on the upper surface side, and the transported article is discharged at the stacking section. A belt conveyor is disposed so as to be transferred to a belt traveling toward a portion, and a belt traveling on an upper surface side from a tail pulley of a first loading portion of the two loading portions is subjected to lower surface by the accumulation portion. Turn the belt up While changing the direction of the transport surface by twisting the belt, changing the traveling direction to the lower surface side of the second loading unit, folding the belt from the tail pulley of the second loading unit to the upper surface side, and returning the belt to the stacking unit; After the belt is folded back to the lower side in the stacking section, the belt is three-dimensionally twisted to change the direction of the conveying surface, the traveling direction is changed to the upper side of the payout section, and the belt is further discharged. The head is returned from the head pulley to the lower surface side and stored in the stretching belt storage unit, and the belt fed from the stretching belt storage unit is three-dimensionally twisted to change the direction of the transport surface and to change the traveling direction to the first direction. A continuous stretching type belt conveyor in which the belt is folded to the upper surface side by a tail pulley of the first loading unit, and the belt is folded back to the upper surface side by a tail pulley of the first loading unit; Book intermediate pulley A continuous stretching type belt conveyor that arranges and rotates the belt three-dimensionally by shifting the rotation axis of the intermediate pulley on the inlet side and the rotation axis of the intermediate pulley on the outlet side by 90 degrees, and the intermediate part that changes the direction of the conveying surface of the belt. The pulleys provide a continuous stretching type belt conveyor in which the center point of the rotation axis of each intermediate pulley is arranged close to the substantially same horizontal plane for each of the changed portions.

[0009]

An embodiment of the present invention will be described below in detail with reference to the drawings. FIG. 1 and FIG. 2 show the cutting faces 13, 14 in both directions from a shaft 11 to a main shaft 12 in tunnel construction.
Continuous belt conveyor 15 provided with
Is shown, and a stacking portion 16 of the slip is provided in the center of the main shaft 12,
The first loading section 17 of the slip is installed near the cutting face 13 and the second loading section 18 is installed near the cutting face 14.
A slip-out unit 19 is provided at the wellhead.

That is, two loading sections 17, 18 are provided in opposite directions around the accumulation section 16, and the first and second loading sections 17 and 18 are provided.
The debris loaded from the loading units 17 and 18 is conveyed to the collecting unit 16 through the belts B1 and B5 traveling on the upper surface side, and the belt B8 traveling toward the payout unit 19 in the collecting unit 16 is moved. It is arranged to transfer the debris.

The belt 20 is a single long belt, but for convenience of explanation, the positions of the belt 20 are denoted by reference numerals B1 to B28. Feeders 21 and 22 are installed in the two loading units 17 and 18, respectively, and the scraps excavated by the excavator (not shown) are loaded into the loading units 17 and 18 by the respective feeders 21 and 22. And transferred to the belts B1 and B5.

As shown in FIGS. 1 and 3, the first loading section 1
Belt B1 traveling on the upper surface side from the tail pulley P1 of No. 7
Is folded back to the lower surface side by the stacking unit 16, and the intermediate pulleys P2 and P2 on the inlet side for inserting the belt B2 on the lower surface from above and below are shifted by 90 degrees from the rotation axis of the intermediate pulley P2 in the subsequent stage. The belt B3, which is installed and is three-dimensionally twisted by the intermediate pulleys P3 and P3 on the outlet side where the belt is inserted from the left and right, changes the transport surface to the horizontal direction (the belt is vertical and both ends are in the vertical direction). Let go.

Subsequently, the traveling direction of the belt B3 is changed by 90 degrees by the intermediate pulleys P4 and P5, and the intermediate pulleys P6 and P6 for inserting the belt B3 from the left and right, and the intermediate pulley at a subsequent stage. The intermediate pulleys P7 and P7 on the outlet side, which are installed at a position shifted by 90 degrees from the rotation axis of P6 and insert the belt from above and below, twist the belt three-dimensionally to change the transport surface downward and move in the traveling direction. To the lower surface side of the second loading unit 18.

Then, the belt B4 on the lower surface side of the second loading portion 18 is folded back to the upper surface side by the tail pulley P8, and the belt B5 traveling on the upper surface side is returned to the collecting portion 16. After the belt B5 is folded back to the lower surface side in the accumulation section 16,
The intermediate pulleys P9 and P9 on the inlet side for inserting the belt B6 on the lower surface from above and below, and the rotation axis of the intermediate pulley P9 at the subsequent stage are shifted by 90 degrees and the outlet side for inserting the belt from right and left. The belt B7 is advanced by three-dimensionally twisting with the intermediate pulleys P10 and P10, changing the transport surface to the horizontal direction.

Further, the traveling direction is set to 9 by the intermediate pulley P11.
The intermediate pulleys P12, P12 on the inlet side for inserting the belt B7 from the left and right, and the rotation axis of the intermediate pulley P12 are shifted by 90 degrees in the subsequent stage, and the belt is inserted from above and below. Exit side pulleys P13, P1
3, the belt is twisted three-dimensionally to change the direction and the traveling direction of the conveying surface of the belt B7, and then folded back toward the upper surface side by the tail pulley P14 of the stacking unit 16 to move the belt B8 from the stacking unit 16 It is advanced to the upper surface side of the payout section 19. The belt B8 on the upper surface side is turned back to the lower surface side by the head pulley P15 of the payout portion 19, and
To store.

The stretching belt storage section 23 has a belt B between a plurality of pulleys P16, P16,.
9 is turned around while it is folded back, and the pulley P facing
By increasing the distance between the shafts of the pulleys P16, P16, etc., the long belt is partially housed to shorten the transport distance of the belt conveyor 15, while the distance between the shafts of the pulleys P16, P16,. Thus, the stored belt B <b> 9 is extended to extend the transport distance of the belt conveyor 15.

The belt B10 fed out from the extension belt storage section 23 to the lower surface side of the stacking section 16 has intermediate pulleys P17, P17 on the inlet side inserted from above and below near the stacking section 16, and thereafter. The intermediate pulley P17
And the intermediate pulleys P18 and P18 on the outlet side, which are installed at a position shifted by 90 degrees from the rotation axis of the belt B and sandwich the belt from the left and right, three-dimensionally twist the belt B1 by changing the transport surface to the side.
Advance 1.

Subsequently, the intermediate pulleys P19, P20, P2
In step 1, the traveling direction of the belt B11 is changed by 90 degrees, and the intermediate pulley P on the entrance side for inserting the belt B11 from the left and right.
22 and P22, and the intermediate pulleys P23 and P23 on the outlet side, which are installed at a subsequent stage with a rotation axis of the intermediate pulley P22 shifted by 90 degrees and insert the belt from above and below.
The belt is twisted three-dimensionally to change the transport surface downward, and the traveling direction is changed to the lower surface side of the first loading unit 17.
Then, the belt B12 on the lower surface side of the first loading unit 17 is folded back to the upper surface side by the tail pulley P1, and the belt B1 traveling on the upper surface side is returned to the stacking unit 16.

Although not shown, a driving device is mounted on any of the tail pulleys or the intermediate pulleys, and the belt 20 is driven by the driving device.

As described above, the first and second loading sections 17,
The waste loaded from the belt 18 is conveyed to the stacking unit 16 through the belts B1 and B5.
And transferred to the payout unit 19. Then, as the excavator advances, the belt is fed out from the stretching belt storage section 23 to extend the lengths of the belts B1 and B12 between the accumulation section 16 and the first loading section 17, and to accumulate the belt. By extending the lengths of the belts B4 and B5 between the first and second loading sections 17 and 1 and the second loading section 18, respectively.
8 can always be installed near the face 13, 14.

At least two intermediate pulleys are provided at positions where the direction of the belt conveying surface is changed, and the rotation axis of the intermediate pulley on the inlet side and the rotation axis of the intermediate pulley on the outlet side are rotated by 90 degrees. Since the belt is shifted three-dimensionally and twisted, the length of the belt passing through the intermediate pulley is equal on the left and right sides, thereby preventing the belt from meandering. Further, two intermediate pulleys on the inlet side and two intermediate pulleys on the outlet side are provided, and the belt is sandwiched between the upper and lower sides or the left and right sides by the respective intermediate pulleys, so that the meandering of the belt can be further suppressed.

The intermediate pulleys for changing the direction of the conveyor surface of the belt are arranged such that the center points of the rotation shafts of the respective intermediate pulleys on the inlet side and the outlet side are close to substantially the same horizontal plane.
That is, since the direction of the conveying surface of the belt is changed along the substantially horizontal direction, in a tunnel where the height in the vertical direction is limited, without extremely shortening the interval of changing the direction of the conveying surface, It can be changed with an appropriate length.

Here, if the direction of excavation of the main shaft 12 is only one direction, for example, only the direction of the face 13, the first
The loading section 17 is provided, and the second loading section 18 is not required. Therefore, the tail pulley P8 on the second loading portion 18 side is brought closer to the collecting portion 16 to reduce the lengths of the belts B4 and B5 to a minimum, and the resulting excess belt is stored in the stretching belt storage portion. 23. Thus, the belt conveyor 15 extends only in one direction of the first loading unit 17 and removes the slip excavated by the face 13 into the discharging unit 19.
Transport to

When the excavation of the face 13 is stopped and the face 14 on the opposite side is excavated with the progress of the excavation work, the tail pulley P8 of the second loading portion 18 is advanced in the direction of the face 14. The lengths of the belts B4 and B5 are extended, and the tail pulley P1 on the first loading unit 17 side is moved closer to the stacking unit 16 to shorten the belts B1 and B12. That is, if the first loading unit 17 is retracted with the advance of the second loading unit 18, the stretching belt storage unit 23
Without operating the belt conveyor 15
It can extend in the direction of the loading section 18.

On the other hand, when excavating the face 14 on the opposite side while the excavation of the face 13 is continued, the first loading section 17 is set as it is, and the belt is fed out from the belt storage section 23 for stretching. Then, the belt conveyor 15 is also extended in the direction of the second loading section 18. If the tail pulley P14 of the collecting section 16 is moved in the opposite direction to the payout section 19 to extend the belt 8, a new loading section may be installed on the front side of the drawing centering on the collecting section 16. it can.

FIG. 4 shows that a third loading section 25 is provided in front of the stacking section 16, and the stacking section 16 and the payout section 19 are provided.
An example is shown in which a new stacking section 26 is provided between the first and second stacking sections 26, and a fourth loading section 27 and a fifth stacking section 28 are newly provided in opposite directions around the stacking section 26. 1 to 3 for convenience of explanation.
The same components as those shown in FIG.

The belt pulled out from the stretching belt storage section 23 has intermediate pulleys P17, P17 inserted from above and below in the vicinity of a new stacking section 26, and the rotation of the intermediate pulley P17 at a subsequent stage. The intermediate pulleys P18 and P18, which are installed at a position shifted by 90 degrees from the shaft and sandwich the belt from the left and right, twist three-dimensionally, and change the conveyance surface to the side to advance the belt B15.

Subsequently, the belt B1 is driven by the intermediate pulley P25.
5 is changed by 90 degrees, and the intermediate pulleys P26, P26 on the inlet side for inserting the belt B15 from the left and right, and the rotation shaft of the intermediate pulley P26 at the subsequent stage are set to be shifted by 90 degrees and the belt is shifted. With the intermediate pulleys P27, P27 on the outlet side inserted from above and below, the belt is three-dimensionally twisted to change the transport surface downward and change the traveling direction to the fourth direction.
Change to the lower surface side of the loading section 27.

Then, the belt B16 on the lower surface side of the fourth loading unit 27 is folded back to the upper surface side by the tail pulley P28, and the belt B17 traveling on the upper surface side is returned to the stacking unit 26.
In the stacking section 26, after the belt B17 is folded back to the lower surface side, the intermediate pulleys P29 and P29 on the inlet side for inserting the lower surface belt B18 from above and below, and the rotating shaft of the intermediate pulley P29 in the subsequent stage are 90 The intermediate pulley P30 on the outlet side, which is installed at a staggered angle and inserts the belt from the left and right
The belt B19 is advanced by three-dimensionally twisting by P30 and changing the transport surface to the side.

Further, the traveling direction of the belt 19 is changed by 90 degrees by the intermediate pulleys P31 and P32, and
9 from the left and right, and intermediate pulleys P33 and P3
3 and the rotation shaft of the intermediate pulley P33 at the subsequent stage is 9
The intermediate pulleys P34 and P34, which are set at a position shifted by 0 degrees and sandwich the belt from above and below, twist the belt three-dimensionally to change the conveying surface downward and change the traveling direction to the fifth loading unit. 28 to the lower surface side.

Subsequently, the belt B20 on the lower surface side of the fifth loading unit 28 is turned upside down by the tail pulley P35, and the belt B21 traveling on the upper surface side is returned to the stacking unit 26.
In the stacking unit 26, after the belt B21 is folded back to the lower surface side, the intermediate pulleys P36, P36 on the inlet side for inserting the lower surface belt B22 from above and below, and the rotating shaft of the intermediate pulley P36 at the subsequent stage are 90 The intermediate pulley P37 on the outlet side, which is installed at a staggered angle and inserts the belt from the left and right
P37 causes the belt B23 to advance three-dimensionally with the transport surface changed to the horizontal direction.

Then, the intermediate pulleys P22, P22 on the inlet side for inserting the belt B23 from the left and right, and the rotation shaft of the intermediate pulley P22 at the subsequent stage are set to be shifted by 90 degrees, and the belt is inserted from above and below. Exit pulley P
23 and P23, the belt is three-dimensionally twisted to change the conveying surface downward, and the traveling direction is changed to the first loading unit 1.
7 to the lower side.

Thus, the first and second loading sections 17, 1
A new two-way transport path of the fourth and fifth loading units 27 and 28 can be newly installed in parallel with the two-way transport path of No. 8, for example, when constructing tunnels on roads and railways. To
It is possible to excavate two tunnels at the same time and to transport the waste to the payout unit 19, and it is also possible to provide a third loading unit 25 in the opposite direction to the payout unit 19 and to excavate as necessary. .

FIG. 5 shows an example in which two loading sections 17, 18 and two payout sections 19, 29 are provided in opposite directions with the stacking section 16 as a center. The tail pulley P1 of the first loading section 17 is shown. The belt B1 traveling on the upper surface side from the
6 and the belt B2 on the lower surface side
Pulleys P38, P38 on the inlet side for inserting
And the rotation axis of the intermediate pulley P38 at the subsequent stage is 90
The intermediate pulleys P39 and P39, which are set at staggered positions and are inserted between the left and right sides of the belt, twist three-dimensionally to advance the belt while changing the transport surface to the side.

Subsequently, the intermediate pulley P39 is set at a position shifted by 90 degrees from the rotating shaft, and the intermediate pulleys P40, P40 on the outlet side for inserting the belt from the front and rear, and a tail pulley P41 provided above the belt, thereby forming a belt. Is changed upward, and the upward belt B25 is
Passes through the right stacking section 16a provided above and moves toward the second payout section 29.

The tail pulley P of the second payout section 29
At 42, the belt B25 on the upper surface side is folded back to the lower surface side, and intermediate pulleys P43, P43 on the inlet side for inserting the belt B26 on the lower surface from above and below, and the intermediate pulley P4 at the subsequent stage.
3 is twisted three-dimensionally by the intermediate pulleys P44, P44 on the outlet side which are installed at a position shifted by 90 degrees from the rotation shaft 3 and insert the belt from the left and right.
Advance 27.

Subsequently, the belt B2 is driven by the intermediate pulley P43.
7 is changed by 90 degrees, and the intermediate pulleys P44, P44 on the inlet side for inserting the belt B27 from the left and right, and the rotation axis of the intermediate pulley P44 at the subsequent stage are set to be shifted by 90 degrees and the belt is shifted. With the intermediate pulleys P45, P45 on the outlet side inserted from above and below, the belt is twisted three-dimensionally to change the transport surface downward, and to change the traveling direction to the second direction.
Change to the lower surface side of the loading section 18.

Then, the belt B4 on the lower surface side of the second loading unit 18 is folded back to the upper surface side by the tail pulley P8, and the belt B5 traveling on the upper surface side is returned to the stacking unit 16. After the belt B5 is folded back to the lower surface side in the stacking section 16, the intermediate pulleys P46 and P46 on the inlet side for inserting the lower surface belt B6 from the front and rear, and the rotation axis of the intermediate pulley P46 at the subsequent stage are 90 degrees. The intermediate pulleys P47, P47 on the outlet side, which are staggered and insert the belt from the left and right, twist three-dimensionally to advance the belt by changing the transport surface to the side.

Subsequently, the intermediate pulley P47 is set at a position shifted by 90 degrees from the rotating shaft of the intermediate pulley P47, and the intermediate pulleys P48, P48 on the outlet side for inserting the belt from the front and back, and a tail pulley P49 provided above the belt, thereby forming a belt. Is changed upward, and the upward belt B8 is
After passing through 6b, it proceeds to the upper surface side of the payout section 19. The belt 8 is folded back to the lower surface side by the head pulley P <b> 15 of the payout unit 19, and is stored in the stretching belt storage unit 23.

The belt pulled out from the stretching belt storage unit 23 is connected to the entrance side intermediate pulleys P17 and P17 inserted from above and below in the vicinity of the stacking unit 16 and the rotation shaft of the intermediate pulley P17 at the subsequent stage. Is an intermediate pulley P1 on the outlet side, which is set to be shifted by 90 degrees and inserts the belt from the left and right.
8, P18, and the belt B28 is advanced by changing the conveying surface to the horizontal direction.

Further, the belt B28 is driven by the intermediate pulley P50.
The intermediate pulleys P22, P22 on the inlet side for inserting the belt B28 from the left and right, and the rotation axis of the intermediate pulley P22 at the subsequent stage are shifted by 90 degrees, and the belt is moved up and down. With the intermediate pulleys P23 and P23 on the exit side inserted between the belts, the belt is three-dimensionally twisted to change the transport surface downward, and the traveling direction is changed to the lower surface side of the first loading unit 17.

Thus, the first and second loading sections 17, 1
The slip loaded from 8 is a two-pronged flapper 1
By the switching of 6c, the sheet is carried out to the second payout section 29 by passing through the right stacking section 16a, and is carried out to the payout section 19 by passing through the left stacking section 16b.

As described above, it is not necessary to change the transport direction of the belt conveyor 15 or to disassemble the belt conveyor each time the loading section and the unloading section move, and the transport direction and stacking direction can be simply and quickly performed. Can be changed.

The present invention can be variously modified without departing from the spirit of the present invention, and the present invention naturally extends to the modified ones.

[0045]

According to the present invention, as described in detail in the above embodiment, the invention according to the first aspect is characterized in that the intermediate surface of the single long belt is three-dimensionally twisted by the intermediate pulley, so that the conveying surface is formed. Change the direction and the traveling direction of the belt, and provide two loading sections in opposite directions around the accumulation section of the conveyed articles,
An extension belt storage section is provided to continuously extend the transport distance of the belt conveyor. So, for example,
Even when excavating in the opposite direction after digging in one direction from the shaft and from the shaft, or when excavating in both directions from the shaft simultaneously, the transport direction can be easily changed,
Further, since the conveyed objects can be simultaneously conveyed from a plurality of different loading units, the efficiency of the conveying operation is remarkably improved, and the installation cost can be suppressed lower than installing a plurality of belt conveyors.

According to a second aspect of the present invention, there is provided a method according to the first aspect, further comprising:
Since the belt is twisted three-dimensionally by shifting the rotation axis of the intermediate pulley on the outlet side by 90 degrees, the length of the belt passing through the intermediate pulley is equal on the left and right sides, and meandering of the belt can be prevented.

According to the third aspect of the present invention, the intermediate pulleys for changing the direction of the conveying surface of the belt are arranged such that the center point of the rotating shaft of each intermediate pulley is close to the substantially same horizontal plane for each change position. Since the direction of the conveyor surface of the belt will be changed along the substantially horizontal direction, even in construction places where the height in the vertical direction is limited, without extremely shortening the interval of changing the direction of the conveyor surface, It can be changed with an appropriate length.

[Brief description of the drawings]

 The figure shows an embodiment of the present invention.

FIG. 1 is a perspective view of a belt conveyor provided with two loading sections around an accumulation section, showing an example of construction in tunnel construction.

FIG. 2 is a plan view showing a construction example of FIG.

FIG. 3 is an enlarged view of a main part showing the construction example of FIG. 1;

FIG. 4 is a perspective view of a belt conveyor provided with two or more loading sections around two stacking sections, showing another construction example.

FIG. 5 is a perspective view of a belt conveyor showing still another construction example and provided with two loading sections and two payout sections centering on an accumulation section.

[Explanation of symbols]

 15 Belt conveyor 16, 26 Stacking section 17, 18 Loading section 19 Payout section 20 Belt 23 Stretching belt storage section 25 Loading section 26 Stacking section 27, 28 Loading section P1-P50 Pulley

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Yoshihiro Yasukawa 2-1 Tsukudo-cho, Shinjuku-ku, Tokyo Kumagaya Gumi Tokyo head office F-term (reference) 3F023 AA01 AB02 BA02 BB01 BC01 DA06 FA04 3F025 AA01 3F033 GA01 LA00

Claims (3)

[Claims] 1. An intermediate pulley for three-dimensionally twisting the middle of a single long belt to change the direction of the conveying surface and the traveling direction of the belt, and extending the belt in the middle of the belt. In a belt conveyor in which a belt storage portion is provided so that the transport distance of the belt conveyor can be continuously extended and retracted, two loading portions are provided in opposite directions around the accumulation portion of the transported material, and each loading portion is provided. A belt conveyor is disposed so as to convey a conveyed object to the stacking unit through a belt traveling on the upper surface side from the unit, and transfer the conveyed object to the belt traveling toward the payout unit in the accumulating unit, Of the two loading sections, the belt traveling on the upper side from the tail pulley of the first loading section is folded back to the lower side at the accumulation section, and the belt is three-dimensionally twisted to change the direction of the transport surface. , The traveling direction to the second loading section To the underside of the
After returning from the tail pulley of the loading unit to the upper surface side and returning to the collecting unit, and then returning the belt to the lower surface side at the collecting unit, twisting the belt three-dimensionally to change the direction of the conveying surface and proceed. The direction is changed to the upper surface side of the dispensing unit, and further, the belt is folded back from the head pulley of the dispensing unit to the lower surface side and stored in the stretching belt storage unit, and the belt fed from the stretching belt storage unit is three-dimensionally. And the traveling direction is changed to the lower surface side of the first loading unit, and the belt is folded back to the upper surface side by the tail pulley of the first loading unit. Continuous stretching belt conveyor. 2. At least two intermediate pulleys are arranged at a position where the direction of the conveying surface of the belt is changed, and the rotation axis of the intermediate pulley on the entrance side and the rotation axis of the intermediate pulley on the exit side are arranged at 9 positions.
The continuous stretching type belt conveyor according to claim 1, wherein the belt is three-dimensionally twisted by being shifted by 0 degrees. 3. The intermediate pulley which changes the direction of the conveying surface of the belt is arranged such that the center point of the rotation axis of each intermediate pulley approaches each substantially the same horizontal plane for each change position. Continuous stretching belt conveyor.