JPH0198510A - Suspended type tubular conveyor device - Google Patents

Abstract

PURPOSE:To improve durability in the device for grain or the like in the caption by supporting the upper ends of a belt by means of tubular suspension rollers provided in the tilt so as to effect pressing force on the upper ends of the belt, while supporting the curving portion of the belt in the horizontal direction by means of a side roller. CONSTITUTION:Projections 2 are formed on both sides in the widewise direction of a belt 1. The projections 2 are abutted to each other, and then, the belt 1 is bent into a bag shape, and thereat, a conveyed article is wrapped into the bag-shaped portion, and further, the lower surfaces of the projections 2 are supported by means of suspension rollers 7. The suspension rollers 7 are tilted at an angle 20-30 deg. with respect to a horizontal surface, and as well, they are arranged apart from the belt surface, and thereat, the projections 2 are pressed into contact with each other by the effect of the horizontal component force of the tilted suspension rollers 7. Moreover, in the curving portion of the belt, a side roller 8 is horizontally rotatably abutted outside the projection 2 so as to horizontally support the resultant force of belt tension. With this constitution, sliding friction between the belt and the rollers can be reduced, thereby improving durability.

Description

[Detailed Description of the Invention] 1) Industrial Application Field The present invention relates to a belt conveyor used as a means of conveying grain, ore, earth and sand, etc. In particular, the conveyance direction can be set in arbitrary combinations such as 'up and down, left and right'. The present invention relates to a suspended cylindrical conveyor device.

2) Conventional technology In a suspended type cylindrical conveyor, a number of hanger running bodies are suspended below the transfer rail in synchronization with a belt, and a series of driving traction cables connecting these hanger running bodies are operated in a circular manner; A roller transfer section is provided in the belt edge, and a roller is placed in this groove to drive and transfer only the belt.Furthermore, a single strong steel wire is placed in the belt edge protrusion, Various ideas have been made, such as one in which the belt support rollers are spaced widely apart.

3) Problems to be Solved by the Invention However, in such a suspended cylindrical conveyor device, those having a hanger running body have a very complicated structure; Dual processing equipment for belt processing and towing line processing is required at the conveyance receiving section and unloading section, which makes the mechanism extremely complicated, and the cost disadvantage is greater than the advantages of the cylindrical shape, making it less economical. In addition, a belt with roller transfer grooves on both sides of the belt and rollers placed in these grooves has a structure in which the roller circumferential speed increases between the transfer surface on the outer circumference of the roller and the sliding surface on the side surface of the roller. As a result, sliding friction between the rollers and the belt inevitably occurs, and the sliding wear of the belt and rollers is extremely large, and in fact, it is completely unbearable for long-term use.

Furthermore, a belt conveyor with a strong steel wire placed inside the protrusion has a very large amount of belt deflection (sagging) between support rollers that are widely separated, making it the most efficient high-speed belt conveyor. Operation is extremely unpredictable, and the arrangement of one strong steel wire necessarily requires large diameter pulleys and rollers for driving the belt, making the entire installation extremely uneconomical. Become something.

4) Means for Solving the Problems This invention was made to solve these conventional drawbacks, and it eliminates the sliding friction between the belt and the rollers by providing suspension rollers and side rollers. It is possible to transport objects only by the rolling movement of the belt, and also to enable rapid left and right bending of the belt. Furthermore, by supporting the belt at an optimal roller spacing, belt deflection is reduced, and conveyance efficiency is improved by high-speed belt operation.

In the belt drive section, effective belt tension is generated by the canvas laminated across the entire width of the belt, and reliable belt drive is possible.The belt suspension tension is Not only does it support smooth high-speed operation by reliably supporting belt bending tension, but it also enables stable and continuous conveyance over long periods of time by minimizing pulley and roller diameters, providing an extremely economical means of conveyance. Can be done.

5) Function In the suspended cylindrical conveyor device configured as described above, the sliding wear of the belt is completely eliminated by effectively utilizing the belt tension, and the belt can be moved horizontally and vertically according to the terrain where the conveyor is installed. Not only is it possible to arrange the conveyor line in a curved manner, but the supports and beams that make up the conveyor frame can be made of very simple materials.

The only rotating bodies are the rollers that suspend and support the belt, and the side rollers for curved running, and their quantity is extremely small, minimizing the transportation power.

In addition, the structure of the conveyance receiving part and delivery part can be planned with a very simple mechanism similar to that of a flat belt with a normal trough angle, and since the belt is formed into a cylindrical shape, a very simple reversing device can be used. becomes.

6) Example This invention will be explained based on the drawings. In FIG. 1, the case of minimum horizontal bending of the entire suspended cylindrical conveyor device
We have shown an example of a planar arrangement in which the contact points of the receiving point and the dispensing point are one), but in reality the receiving point and the dispensing point are set separately, so it is not possible to There are no extreme configurations, but are exemplified to provide a detailed explanation of the invention.

In Fig. 1, part a is the cargo receiving part (Fig. 3), part b is the part where the loaded side belt and empty belt are arranged vertically, part 0 is the right angle bend part (Fig. 5), and part d is the loaded side. The part where the belt and empty belt convert from vertical arrangement to horizontal arrangement (Fig. 7), e
In this example, the object is transported in the direction of the arrow.

Figures 2 and 3 show details of the cargo receiving section, and the cargo receiving section is located in the hopper 1.
At 4, the conveyance is received from another conveyor and fed to the wide open belt 1. The belt 1 that has received the transported object is forcibly bent over the bag as shown in FIG. Transport it wrapped inside. At this time, in order to forcibly bend the belt 1 from the open state to the suspended state, horizontally rotatable side rollers 8 shown in FIG. supports the resultant force of Furthermore, it is thought that the slippage of the belt 1 does not occur due to the weight of the belt and the transported object; however,
As a precaution, a large flange 9 is provided on the top of the side roller 8 to limit the amount of slippage in the unlikely event that it slips up, and to ensure smooth operation. When the belt 1 is bent at a steep angle on one side, the flange diameter of the 7-lunge 9 is increased so that it extends to both sides of the belt protrusion 2, and at the opening of the belt 1, the side rollers are attached from both sides of the belt protrusion 2. In order to avoid interference between the flanges 9, the flanges 9 are made small in diameter, as shown by the thin lines in FIG. The side rollers 8 are attached to the beam 5 by side roller mounting bases 10.

In order to make the belt 1 run on the suspension roller 7 by the drive pulley 12, protrusions 2 are provided on both sides of the belt 1 in the width direction, as shown in FIGS. By forming an inclination of α° (approximately 20° to 30°) and transferring it in contact with the outer periphery of the suspension roller rough on this inclined surface, the weight P of the conveyed object and belt acting on the outer periphery of the suspension roller 7 on one side is reduced. For belt 1
R==tanα by the suspension rollers 7 arranged on both sides of
They are pressed against each other with a force of 0P, forcing the projections 2 of the belt 1 into close contact. Further, since the outer peripheral rolling surface of the suspension roller luff is cylindrical, no sliding friction occurs on the contact surface of the suspension roller luff, and wear between the belt 1 and the suspension roller luff can be prevented.

Furthermore, discrepancies in the belt thickness a due to manufacturing errors in the belt 1 inevitably occur, so by determining the position of the suspension roller by providing a clearance bj that is approximately equal to the maximum value of a certain allowable value, the running of the belt 1 can be improved. This prevents an excessive load from being applied to the suspension roller.

When the radius of curvature of the belt 1 in the horizontal direction is large, that is, when the bending angle of the belt 1 is small, only the pressing force R due to the inclination generated on the suspension roller 7 can be sufficient. In this case, the resultant force generated on the inside of the bend due to belt tension is greater than the pressing force R,
The aforementioned side rollers 8 are provided to support the resultant force generated on the inside of the bend. In this case, the suspension rollers 7 only share the weight of the conveyed object and the belt 1.

As illustrated in Figures 2 and 3, the loading side belt and the chamber side belt are arranged one above the other, and in the plan view of Figure 3, they are positioned on the same straight line, and the C-C cross section (Figure 16) The belt arrangement is shown in the figure. This is the cross section D-D in Figure 8 ('17th
They can also be arranged in parallel as shown in Figure).

The room side belt is a return side belt, and in order to prevent the conveyed objects attached to the loading surface of the belt 1 from falling during conveyance, a reversing mechanism for the belt 1 is provided directly below the loading side belt, and the belt 1 is rotated during conveyance. It is configured to have exactly the same cross-sectional shape as the loading side belt.

Figure 14 shows the cross-section of Figure 2 A-A, and Figure 15 shows the cross-section of Figure 2 B-
B cross section is shown.

Figures 4 and 5 show details of right angle bends as a very special example.

FIGS. 6 and 7 show the details of the sharp bend, and show the mounting arrangement of the side rollers 8 to completely support the resultant force on the inside of the bend due to belt tension. It also shows the state of conversion from the vertical arrangement of the loading gate side belt and the room side belt to a parallel arrangement.

The 8th cause, Figure 9 shows the details of the transported goods discharging section.
The belt 'fMwJ pulley 12 is rotated by the drive device 11, and the belt 1 runs due to the friction between the drive pulley 12 and the belt 1, and the conveyed object is conveyed, and at the dispensing section, the belt 1 that has been running in a suspended cylindrical shape is opened. A belt tensioning device 13 is disposed immediately after the drive pulley 12, and a reversing device for the return side belt is provided just below the loading side belt in the same way as in the cargo receiving section.

As shown in FIGS. 10 and 11, the belt 1 is
Belt tension is generated by the canvas 3 laminated inside the belt 1 over the entire width of the belt. This canvas 3 also supports the weight of the conveyed object when it is incorporated therein, and the strength of this canvas and the number of layers to be stacked are determined each time the conveyor is designed.

A large number of high-tension steel cords 4 are embedded in protrusions 2 formed at both ends of the belt 1 in the width direction. During transportation, the protrusion 2 is supported by the suspension rollers 7 and side rollers 8, so the belt tension is mainly concentrated on the protrusion 2.
A large number of steel cords 4 are embedded in the belt to maintain the belt tension. This steel code 4
Similarly to the canvas 3, the strength and number of the canvas 3 are determined each time the conveyor is designed.

7) Effects of the Invention As explained above, this invention differs from the conventional suspended cylindrical conveyor in that the belt is suspended by cylindrical rollers with an angle of 20° to 30° on the roller transfer surface of the protrusion in the width direction. By doing so, sliding friction between the belt and rollers is avoided and wear is prevented, and the belt is always pressed from the outside by the horizontal force acting on this inclined surface, and the opening is suspended to account for the manufacturing error in belt thickness. By ensuring this through roller arrangement, excessive loads are not applied to the suspension rollers.

In addition, in order to enable sharp bending, the belt protrusion is supported from the outside by side rollers, making it possible to design the overall radius of curvature of the conveyor to be small. It can be expected to be maintenance-free, and the structure of the columns, beams, and roller support is very simple, and all of them are inexpensive, so the economical effect is very large.

Guided only by cylindrical rollers that make effective use of belt tension, the conveyor can be placed in a rapid curve in either the vertical or horizontal direction to suit the terrain, making it suitable for the installation location. Able to plan economically.

In addition, by making the configuration of the receiving section and discharging section very simple, similar to that of a normal flat belt conveyor, economical design is possible.Furthermore, by incorporating a belt reversing device, belt deposits in the intermediate conveying section can be removed. In addition to preventing particles from falling, it also prevents fine particles from being scattered during transport, and since the belt, which is an elastic body, only moves around with a few rollers, it generates very little noise and is effective in preventing pollution.

If we comprehensively evaluate the effects of each component section above, in addition to the economic effect of simplifying each component, it will significantly reduce operating costs, and it will also be possible to arrange equipment economically in the most suitable location. It is highly effective in preventing pollution such as dust scattering, falling deposits, and noise generation.

[Brief explanation of the drawing]

In Figure 1, the contact points of the receiving point and the discharging point are combined to show the function of the entire device and the case of minimum horizontal bending.
An example of the planar arrangement, Figure 2 is a side view of the cargo receiving section.
Figure 3 is a plan view of the same, Figure 4 is a detailed side view of the right angle bending part,
Fig. 5 is a plan view of the same, Fig. 6 is a side view of the sharply bent part, Fig. 7 is a plan view of the same, Fig. 8 is a side view of the transported object dispensing part, Fig. 9
The figure is a plan view of the same, FIG. 10 is a detailed sectional view of the parallel conveyance section, FIG. 11 is a detailed sectional view of the belt protrusion, FIG. 12 is a front view of the side rollers arranged at the sharp bend, and FIG. 13 is the same plan view, FIG. 14 is a sectional view taken along line AA in FIG. 2, FIG. 15 is a sectional view taken along line BB in FIGS.
-C sectional view, and FIG. 17 is a DD sectional view of FIG. 1-belt, 2-projection, 3-canvas, 4-steel cord, 5-beam, 7-suspension roller, 8-side roller. 9-Flange, 12-Drive pulley, 13-Belt tensioning device, t7I in the drawing:'? Procedural amendment (method) March 28, 1988 Patent Office Commissioner Punishment nC: I,
, :: +7, do :! Submission 1, Indication of the case 1988 Patent Application No. 252234 2) Name of the invention Suspended cylindrical conveyor device 3, Person making the amendment Relationship to the case Patent applicant's residence 4-3 Iwaya Kitamachi, Nada-ku, Kobe City 33 19861
February 22 Drawing 7, contents of amendment.

Claims (1)

[Claims] 1) A belt formed with protrusions on both sides of the belt in the width direction is bent into a bag shape so that the protrusions overlap at the upper end, and the lower surface of the upper end protrusion is raised 20 degrees from the horizontal. A transfer surface with an angle of about 30 degrees is formed, and a freely rotatable cylindrical suspension roller is supported diagonally from the belt surface with a predetermined clearance, to transfer the load of the belt and the transported object. The angle of the surface is used to generate belt pressing force from both sides of the belt upper end, and in the belt curved section, side rollers that can be rotated horizontally from the outside of the belt's upper end protrusion are arranged in the belt curved section. In addition, the resultant force of the belt tension at the sharp bend is supported horizontally by cylindrical side rollers, eliminating the sliding friction between the belt and the rollers when the belt moves straight or curved. A suspended cylindrical conveyor device characterized by bearings. 2) In the suspended cylindrical conveyor device having the cylindrical roller support method described in claim 1, the belt drive tension in the belt drive pulley is generated by canvas laminated within the belt over the entire width of the belt. In addition, regarding the vertical load on the conveyed object and belt load during transportation, and the horizontal load on the belt curve, a required steel cord is buried in the center of the protrusion formed on both sides of the belt in the width direction, and the belt transportation tension is A belt for a suspended cylindrical conveyor in which the standby is generated by the steel cord portion.