JPS6240968Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] The present invention involves rolling most of the outgoing path of an endless belt that circulates back and forth between two locations into a pipe shape, wrapping the powder and granules in the pipe, and continuously conveying the material. The present invention relates to a reciprocating pipe conveyor that uses the return path of the pipe conveyor to further transport other powder or granular material.

[Conventional technology]

Endless belts used in pipe conveyors have a highly wear-resistant outer surface that comes into contact with the shape-retaining rollers that guide the belt to round it, and an inner surface that wraps around the conveyed object. It is rolled out flat and travels.

[Problem that the invention attempts to solve]

It is advantageous if the return path of the pipe conveyor is rounded upwards in the same way as the outward path, so that objects to be conveyed can also be conveyed on the return path.

However, if the endless belt is rolled up so that its outer surface is inward, objects to be conveyed that adhere to the belt on the outward journey will fall off on the return journey due to vibrations or the like, contaminating the surrounding environment.

In addition, the overlapping portions of both ends of the rolled endless belt must always be located upward so that the conveyed object does not fall out.

However, on the return trip, since the inner surface of the belt faces downward, it is not possible to roll the belt as it is so that the overlapped portions of both ends face upward.

In addition, since the vertical distance between the outward path and the return path of the endless belt is small, when conveying an object using the return path, the object conveyed by the return path is received and transferred to other conveying devices or The reality is that it is difficult to discharge to a storage facility or the like, and for this reason, it has not been possible to realize reciprocating conveyance using a pipe conveyor.

[Means for solving problems]

The present invention relates to a reciprocating pipe conveyor that solves the above-mentioned problems, and in which an endless belt is looped around a pair of front and rear drums, at least one of which is driven, in a flat manner, and is circulated. By providing a support device that guides and supports the intermediate portions of the outgoing belt on the outgoing side of the endless belt and the inbound belt on the return side of the endless belt in a rounded pipe shape, it is possible to A first conveyed object is supplied onto the outgoing belt from the provided conveyed object supply device, is wrapped in a pipe shape by the outgoing belt, and is conveyed to a conveyed object discharge device provided at the terminal end of the outgoing belt. In the pipe conveyor which is made of (b) a twisting device that gradually twists the belt 180 degrees around the longitudinal axis of the return belt so that the overlapped end of the belt faces upward while maintaining the pipe shape; (b) located above the pipe-shaped return belt; (c) a shedding device that forcibly opens the overlapping side end at a certain angle over an appropriate range; (d) At a portion near the end of the return belt, the middle part of the return belt rolled into a pipe shape is flattened, and the flattened part is rolled out. (e) a detour device configured to circulate the detour in a downward detour manner; (f) The returning belt, which has been rolled upward again after passing through the detour device, is gradually rotated 180 degrees around the axis in the traveling direction so that the overlapping side end is downward. A twisting device that twists repeatedly.

It is characterized by sequentially arranging the following.

〔Example〕

Hereinafter, a detailed description will be given based on the attached drawings. In the following description, the axes of the rollers and drums, unless otherwise specified, are perpendicular to the direction in which the belt travels.

Reference numeral 1 denotes a flexible endless belt, and a conventional flat belt or a belt endowed with an elastic tendency to curl into a pipe shape with the longitudinal direction as the axis can be used. This endless belt 1 is flattened out at a driving drum 2 at the rear and a driven drum 3 at the front, and is wound around each of the drums 2 and 3.

The endless belt 1 that rotates forward and downward around the front driven drum 3 is connected to a first guide roller 4 and a detour device 5 to be described later.
It passes through a second guide roller 6 and is wrapped around the rear driving drum 2.

In FIG. 1, 7 and 8 are connected by connecting rod 9.
A first support frame and a second support frame are vertically long and have the same shape and size and are arranged parallel to each other at regular intervals.

As shown in FIG. 2, the first support frame 7 has upper and lower parts.
It is partitioned into chambers 7a and 7b.

The second support frame 8 is similarly partitioned into two upper and lower chambers 8b (not shown) 8a.

In each of the chambers 7a, 7b, 8a, 8b, a plurality of pivot fittings 10 are arranged approximately on one circumference.

Each pivot fitting 10 has pivot pieces 10 at both ends of the base piece 10a facing in a direction perpendicular to the base piece 10a.
b, 10b are connected, and both pivot pieces 10b, 1
Each of the shape-retaining rollers 11 pivotally installed at 0b is located on the same circumference so as to substantially draw a circle.

These numerous support frames 7, 8, connecting rods 9, etc., allow the outgoing belt 1 on the outgoing side of the endless belt 1 to
A guide and support device is formed by rolling the intermediate portions of the belt a and the backward belt 1b, which is the backward side of the endless belt 1, into a pipe shape.

As shown in FIG. 3, the outgoing belt 1a developed into a flat belt and rotating around the driving drum 2 from below has its lower surface and side surfaces covered with support rollers 1, respectively.
2 and 13, and is gradually rolled into a trough-like shape, and during that time, a first conveyed object 15 in the form of powder and granules is fed from a hopper 14, which is a conveyed object supplying means, provided above the starting end of the outgoing belt 1a. Injected.

Next, the outbound belt 1a passes through the upper chamber 8a of the second support frame 8 and the upper chamber 7 of the first support frame 7 in the support device.
a, and the upper chamber 8a of the second support frame 8, and are guided by the shape-retaining rollers 11 and rolled into a pipe shape, with both ends overlapping each other upward to form the first conveyed object 15. It wraps around the pipe and is supported around it by shape-retaining rollers 11, so that it travels while maintaining its pipe shape.

Near the front driven drum 3, the outgoing belt 1a that has escaped from the second support frame 8 at the upper end is attached to the third
The first conveyed object 15 is expanded into a flat belt while passing through a belt expanding device 16 which is configured approximately longitudinally symmetrically with the rounding device shown in the figure.
The transported material is discharged to a hopper 17, which is a conveyed material discharge device provided at the terminal end of section a.

The above is the same configuration as the outward path of a known pipe conveyor.

The flat homeward belt 1b folded back at the driven drum 3 passes through the first guide roller 4, passes through a rounding device 18 having the same configuration as the rounding device at the starting end of the forward belt 1a, and rolls the overlapping portions of both ends downward. It is rolled into a pipe shape and enters the lower chamber 8a of the second support frame 8 as described below.

As shown in FIG. 4, the lower chamber 8 of each second support frame 8
In a, a pivot fitting 1 having the same shape as the above-mentioned pivot fitting 10 is shown.
At 9, a shape retaining roller 20 similar to the shape retaining roller 11 is pivoted on the same circumference so as to substantially draw a circle.

As shown in FIG. 5, one side of the base piece 19a of some or all of the pivot fittings 19 is in direct contact with the second support frame 8, and the other side end is in direct contact with the second support frame 8.
A U-shaped spacer 21 of a required thickness, as shown in FIG. 6, is sandwiched between the support frame 8 and the support frame 8, and is fastened with bolts 22 and nuts 23.

Therefore, the shape retaining rollers 20, as first torsion rollers, are inclined in the same direction with respect to the tangent to the pipe-shaped return belt 1b.

Therefore, as shown in FIG.
The circumferential surface of the pipe-shaped return belt 1b passing through the belt is gradually twisted as it attempts to advance in the rotational direction of the first torsion roller, and by appropriately adjusting the thickness of each spacer 21, the circumferential surface of the pipe-shaped return belt 1b is twisted by 180 degrees around the axis in the traveling direction. It is twisted, with the overlapping portions of both sides facing upward, and enters the opening device shown in FIG.

This opening device consists of a horizontal support roller 24
and slopes upward at both ends in an inverted figure-eight shape,
Consisting of a pair of left and right opening rollers 25, 25, the pipe-shaped return belt 1b has its middle portion supported downwardly by the support roller 24, while its both end portions pass through the outer surfaces of both opening rollers 25, 25. As a result, the opening is forcibly opened as shown in the figure.

At this time, a second conveyed object 27 in the form of powder is fed from the first belt conveyor 26, which is a conveyed object supply device, installed directly above the return belt 1b and oriented in a right angle direction.

Then, it is rolled into a pipe shape with the overlapping portion upward by a rounding device 28 having the same configuration as the rounding device 18, and is supported by shape retaining rollers 11 in the lower chamber 7b of the first support frame 7 to maintain the pipe shape. and drive in the direction of the arrow.

When the pipe-shaped backward belt 1b reaches near a predetermined point, it is expanded into a flat belt by a developing device 29 similar to the belt developing device 16 for the outward path, and enters the detour device 5.

The detour device 5 includes a roller 5a provided at a key point of the return belt 1b at approximately the same height as the return belt 1b, a roller 5b located in front of and below it, a roller 5c located behind it, and a roller 5c located above it. The flat return belt 1 is formed by a roller 5d that rotates
b is detoured downward by rotating around each roller 5a, 5b, 5c, and 5d.

Inside the detour device 5 and below the rollers 5a, a second belt conveyor 30, which is a conveyed object discharge device, is installed facing in a direction perpendicular to the return belt 1b.

Therefore, as shown in FIG.
7, when the unfolded return belt 1b goes around the rollers 5a, it is dropped onto the lower second belt conveyor 30 and conveyed to a desired location.

Flat belt-like return belt 1 that has passed through the detour device 5
b is rolled up into a pipe shape at both end overlapping portions by a rounding device 31 similar to the rounding device 18, and then passed through a second twisting roller (not shown) similar to the first twisting roller. In the meantime, it is twisted again by 180 degrees so that the overlapping part faces downward, and then passes through the second guide roller 6 and returns to the drive drum 2 at the end.

The pipe conveyor of the above-described embodiment can convey the second conveyed object 27 by effectively utilizing the return belt 1b, which was conventionally empty, so that the wheel conveyance efficiency is significantly improved and equipment costs are significantly reduced. be able to.

In the above-described embodiment, the pipe-shaped return belt 1b is forcibly twisted by 180 degrees around the longitudinal axis, but since the twisted portion is empty and lightweight, the endless belt 1 is not damaged. There's nothing to do.

FIGS. 10 and 11 show another example of a twisting device for the pipe-shaped rectangular belt 1b, and the same members as those in the previous embodiment are given the same reference numerals and the explanation thereof will be omitted.

In the lower chamber 51a of the support frame 51 corresponding to the second support frame 8, the shape-retaining roller 11 is pivotally installed in the same manner as in the upper chamber (not shown), and the pipe-shaped return belt 1b is provided at the lower end of the lower chamber 51a. A mounting plate 52 is fixed to the front edge in the strike direction and to both the left and right connecting rods 9 below.

At the center of the upper surface of the mounting plate 52, a center piece 53a of a torsion metal fitting 53 having a U-shape in front is pivotally attached with a pin 54, and on both side pieces 53b, a torsion metal fitting 53 parallel to the center piece 53a is attached. A roller 55 is pivotally installed.

A fixing plate 56 and a handle 57 extend in this order from the side ends of the center piece 53a of the twist fitting 53, and the handle 57 is loosely inserted into the connecting rod 9 so as to be swingable back and forth.

An arcuate hole 58 centered on the pin 54 is bored at a key point in the fixing plate 56, and a bolt 59 and a nut pass through the mounting plate 52 from below and pass through the arcuate hole 58. 60, it is fixed to the mounting plate 52.

In this device, the torsion roller 55 is rotated by loosening the bolt 59 and operating the handle 57.
is appropriately inclined with respect to the tangential direction of the pipe-shaped return belt 1b, and then the twisting metal fittings 53 are fixed, so that the pipe-shaped return belt 1b can be forcibly twisted in the same way as the torsion roller 20 described above.

In addition, in the above, the lower chamber 5 of each support frame 51
Although one twisting roller 55 is provided at the lower end of 1a, a plurality of twisting rollers 55 may be provided in each lower chamber 51a as needed.

Further, in the above embodiment, the second transported object 2
7 is supplied to and discharged from the return belt 1b by a belt conveyor, but it goes without saying that this can also be done by using a hopper.

Furthermore, in the above-described embodiment, in order to roll the flat endless belt 1, the rounding device 18,
28, 31, etc., and in order to unfold the pipe-shaped endless belt 1 into eccentric pieces, unfolding devices 16, 2 are provided.
9, etc., but even without these, the endless belt can be naturally rolled up or unfolded flat depending on the shape of the guide means in front of the endless belt in the direction of movement. It is also possible to omit this device.

(Effects of the invention) As described above, the pipe conveyor of the present invention can transport the second conveyed object by utilizing the conventionally empty returning belt, so the transport efficiency is significantly improved.
Moreover, it is extremely effective in reducing equipment costs.

In addition, in the present invention, a part of the return belt is made to go around in a downward detour manner by the detour device, and a cover for the second conveyed object that has been transported by the return belt is placed on the detour part of the return belt. Since the transported object discharge device is provided, even if the vertical distance between the forward belt and the backward belt is small, the transported object discharge device for the backward belt can be provided.

This essentially made reciprocating transportation possible using a pipe conveyor.

Moreover, in this invention, the returning belt is rolled up into a pipe shape and twisted 180 degrees, so it is not flat.
Unlike when the belt is twisted 180 degrees, the first conveyed object attached to the returning belt does not fall off during the return trip.
It's convenient.

[Brief explanation of drawings]

FIG. 1 is a side view schematically showing an example of the pipe conveyor of the present invention, FIG. 2 is an enlarged sectional view taken along the line -- in FIG. 1, and FIG. 3 is an enlarged sectional view taken along the line -- in FIG. 4 is an enlarged sectional view taken along the - line in FIG. 1, FIG. 5 is an enlarged sectional view taken along the - line in FIG. 4, FIG. 6 is an enlarged perspective view of the spacer, and FIG. 7 is an enlarged sectional view taken along the line -
8 is an enlarged cross-sectional view taken along the - line in FIG. 1; FIG. 9 is an enlarged cross-sectional view taken along the - line in FIG. 1; FIG. 10 is a lower end of the support frame in another example of the torsion device 11 is a cross-sectional plan view showing the pipe-shaped return belt with imaginary lines.
-XI line sectional view. 1...Endless belt, 1a...Outbound belt, 1b
... return belt, 2 ... drive drum, 3 ... driven drum, 4 ... first guide roller, 5 ... detour device, 6 ... second guide roller, 7 ... first support frame,
7a...Upper chamber, 7b...Lower chamber, 8...Second support frame, 8a...Lower chamber, 9...Connection rod, 10...Pivot fitting, 10a...Base piece, 10b...Pivot support piece, 11
... Shape retaining roller, 12, 13 ... Support roller, 1
4...Hopper (transported object supply device), 15...
First conveyed object, 16... Belt deployment device, 17...
... Hopper (transported object discharge device), 18 ... Rounding device, 19 ... Pivot fitting, 19a ... Base piece, 20
... Shape retaining roller, 21 ... Spacer, 22 ... Bolt, 23 ... Nut, 24 ... Support roller, 2
5... Shedding roller (opening device), 26... First belt conveyor (transported object supply device), 27... Second transported object, 28... Rounding device, 29... Expanding device, 30... th... 2 Belt conveyor (conveyed object discharge device), 31... Rounding device, 51... Support frame, 5
1a...lower chamber, 52...mounting plate, 53...twisting metal fittings, 53a...center piece, 53b...side piece, 54...
... Pin, 55 ... Twisting roller (twisting device), 56
... Fixed plate, 57 ... Handle, 58 ... Arc-shaped hole, 59 ... Bolt, 60 ... Nut.

Claims (1)

[Claims for Utility Model Registration] (1) An endless belt is looped around a pair of front and rear drums, at least one of which is driven, in a flat manner and circulates, and an outgoing belt which is the outgoing side of the endless belt. and a support device that guides and supports each intermediate portion of the backward belt on the backward side of the endless belt in a rounded pipe shape, thereby providing a conveyed object supplying device disposed on the starting end of the forward belt. In the pipe conveyor, the first conveyed object supplied onto the outgoing belt is wrapped in a pipe shape by the outgoing belt and is conveyed to the conveyed object discharging device provided at the terminal end of the outgoing belt. (a) contact the outer peripheral surface of the return belt rounded into a pipe shape at an angle to the tangential direction; , gradually rotate 180 degrees around the longitudinal axis of the return belt so that its overlapped end is upward.
(b) an opening device that forcibly opens the overlapping side end located above the pipe-shaped return belt at a certain angle over an appropriate range; and (c) the opening device that (d) a conveyed object supply device that is installed directly above the opening of the homeward belt and supplies a second conveyed object to the opening of the homeward belt; (e) a detouring device that flattens the intermediate portion of the belt and causes the flattened portion to circulate downward in a detour; (f) a conveyed object discharging device for receiving the second conveyed object conveyed by the return belt and discharging it to another place; Gradually around the axis in the direction of travel so that the side edges are downwards.
A reciprocating pipe conveyor characterized by sequentially installing a twisting device that twists 180 degrees. (2) At least one of the torsion devices is a pivot fitting consisting of a base piece and a pair of pivot pieces connected at both ends of the base piece in a direction perpendicular to the base piece and parallel to each other. A torsion roller is pivotally mounted on the pivot piece, and the base piece is attached to a support device on which the pipe-shaped return belt runs, so that the inclination angle of the twist roller in a direction perpendicular to the traveling direction of the return belt can be adjusted. A reciprocating pipe conveyor according to claim 1, which is comprised of a twisting roller device. (3) The reciprocating conveyance according to claim (2) of the utility model registration, characterized in that the base piece is attached to a support device with bolts and nuts so that the inclination angle of the torsion roller can be adjusted. type pipe conveyor. (4) An inclination angle adjustment lever is integrally attached to the base piece of the pivot fitting of the torsion roller, and the inclination angle of the torsion roller can be adjusted using the inclination angle adjustment lever. A reciprocating pipe conveyor according to claim (2) of the utility model registration claim.