JP3237388B2 - Inspection and adjustment method for steep conveyor - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for inspecting and adjusting a steep conveyor.

[0002]

2. Description of the Related Art When a bulk material such as crushed stone, limestone, sand, steel stone, ready-mixed concrete or the like is transported from the ground to a high place by a belt conveyor, the inclination angle of the belt conveyor is limited by the angle of repose of the bulk material. For this reason, the inclination angle of the conventional belt conveyor is at most about 15 degrees. As a result, there is a problem that the installation space of the belt conveyor is widened and the site cannot be effectively used.

[0003] In recent years, in order to save space, two sets of independent belt conveyors have been installed at the top and bottom, respectively, and loose materials have been placed between the upper belt of the lower belt conveyor and the lower belt of the upper belt conveyor. Steep conveyors, including vertical ones that sandwich, wrap and convey, have been put to practical use.

An example of such a steeply inclined conveyor is shown in FIG. 5, where 1 is a lower belt conveyor and 2 is an upper belt conveyor installed above the lower belt conveyor 1.

[0005] The lower belt conveyor 1 includes a head pulley 3 disposed above and a tail pulley 4 disposed behind the head pulley 3 and below the head pulley 3. A drive belt wheel 5 disposed below the head pulley wheel 3, an aperture belt wheel 6a disposed near the drive belt wheel 5, the throttle belt wheel 6a and the head belt wheel 3 And an aperture belt wheel 6b disposed between the
An endless conveyor belt 7 is wound around each of the belt wheels 3, 4, 5, 6a, and 6b. A drive device 8 such as a reduction motor or a hydraulic motor is connected to the drive belt wheel 5,
By driving the driving device 8, the conveyor belt 7 can run in the direction of arrow A.

[0006] Between the tail pulley 4 and the head pulley 3, there is a horizontal portion 9 capable of supplying and transporting the loose objects 20 on the conveyor belt 7, and a loose material which has been transported along the horizontal portion 9. The maximum angle at which 20 can be transported upwards is 45
A rising portion 10 having a steeply inclined portion (vertical in the example of FIG. 5) is formed, and a horizontal portion 9 and a rising portion 10 are formed.
, A plurality of carrier roller devices 11 are disposed at required intervals in the bulk transport direction D.

The upper belt conveyor 2 has a head belt wheel 12 disposed on the upper front side of the head belt wheel 3 of the lower belt conveyor 1 and a tail part disposed on a lower rear part of the head belt wheel 12. An endless conveyor belt 17 is provided on each of the belt wheels 12, 13, 15a, 14, 15b, and 15c with a belt belt 13, a drive belt wheel 14, and aperture belt wheels 15a, 15b, and 15c. It is wound so as to be located immediately above the conveyor belt 7 of the conveyor 1. The drive belt wheel 14 is connected to a drive device 16 such as a reduction motor or a hydraulic motor. By driving the drive device 16, the conveyor belt 17 can be sent in the direction of arrow B.

[0008] Between the tail belt wheel 13 and the head belt wheel 12, there is a maximum angle of 45 that can hold the bulk material 20 conveyed on the horizontal portion 9 of the lower belt conveyor 1 and convey it upward. A rising portion 18 having a steeply inclined portion (vertical in the example of FIG. 5) of a degree or more is formed.
A plurality of pressing roller devices 19 are provided at required intervals in the bulk transport direction D.

A carrier roller device 11 disposed at the rising portion 10 and a pressing roller device 1 disposed at the rising portion 18
Details of 9 are shown in FIG.

The carrier roller device 11 includes a main fixed roller 21 for supporting a central portion of the conveyor belt 7 in the width direction, and a conveyor belt 7 for supporting both sides of the conveyor belt 7 in the width direction.
In order to form a trough angle, the auxiliary fixing roller 22 extending from the center of the conveyor belt 7 toward the width end toward the upper belt conveyor 2 is provided, and the rollers 21 and 22 are rotatable by brackets 23 and 24. Supported.

The holding roller device 19 is provided with the conveyor belt 1.
7 and a belt end roller 26 which presses both sides of the conveyor belts 17 and 7 in the width direction in parallel with the auxiliary fixing roller 22. The main press roller 25 is a torsion bar. The shaft 27 is rotatably supported by an arm 28 that is being rotated toward the conveyor belt 17 by a shaft 27, and the belt end roller 26 is a shaft that is being rotated toward the conveyor belt 17 by a torsion bar (not shown). 29 is rotatably supported.

When the bulk material 20 is conveyed at the rising portions 10 and 18, the bulk material 20 is loaded on the conveyor belt 7 and the surface thereof is conveyed by the conveyor belt 17 as shown in FIG. It is covered, sandwiched between the conveyor belts 7 and 17, and conveyed in a wrapped state.

On the other hand, at the upstream end of the horizontal portion 9 of the lower belt conveyor 1, as shown in FIG.
Is supplied, and the bulk material 20 supplied from the chute 30 onto the conveyor belt 7 is provided.
A pair of skirts 31 for regulating the width of the belt are arranged at a required interval in the width direction of the conveyor belt 7.

In FIG. 5, reference numeral 32 denotes a chute for transferring the bulk material 20 to a downstream facility (not shown).

When the loose objects 20 are conveyed by the steeply inclined conveyor, the conveyor belts 7, 17 are sent by the driving devices 8, 16 via the driving belt wheels 5, 14 in the directions of arrows A and B. For this reason, the bulk material 2 supplied from the chute 30 onto the conveyor belt 7 of the lower belt conveyor 1 is
0 is constrained in the width direction by a pair of skirts 31 and is discharged from the downstream end outlet of the skirt 31, then conveyed through the horizontal portion 9, reaches the rising portion 10, and reaches the rising portion 10.
As shown in FIG. 6, the conveyor belt 7 is conveyed upward while being wrapped and wrapped by the conveyor belt 17 which is fed to the rising portion 18 of the conveyor belt 7 and the upper belt conveyor 2. And sent to the next process facility.

In the above-described steeply inclined conveyor, the loose objects 20 conveyed at the rising portions 10 and 18 are sandwiched and wrapped by the conveyor belts 7 and 17, so that the inclination angles of the rising portions 10 and 18 are loose. The angle of repose can be determined independently of the angle of repose of 20 and the angle of inclination can be set to a steep angle of 45 degrees or more (including vertical), so that the installation space of the conveyor can be narrowed and the site can be effectively used There are advantages.

[0017]

However, in the steeply inclined conveyor as described above, the pressing force of the main pressing roller 25 and the belt end roller 26 increases the rising portions 10 and 18.
If the bulk material 20 does not act reliably on the bulk material, a slip occurs inside the bulk material 20 and the pressure due to the weight of the bulk material 20 located above is transmitted to the bulk material 20 located below. As a result, the bulk material 20 cannot be stably conveyed.

For this reason, in the prior art, an operator has checked and adjusted the pressing force of the large number of main pressing rollers 25 and the belt end rollers 26 one by one.

However, a large number of main holding rollers 25 are provided.
When the operator checks and adjusts the pressing force of the belt end roller 26 one by one, it takes time and effort, and has a disadvantage that the efficiency is extremely low.

The present invention has been made in view of the above-described circumstances, and by directly measuring the pressure inside a bulk material, it is possible to reliably grasp whether or not the pressing force by the main pressing roller and the belt end roller is in an appropriate state. Another object of the present invention is to provide a method for inspecting and adjusting a steep conveyor that can improve the working efficiency.

[0021]

SUMMARY OF THE INVENTION The present invention is directed to an upper belt conveyor in which a loose material contact surface of a conveyor belt in a lower belt conveyor faces a loose material contact surface of a conveyor belt in an upper belt conveyor. A belt conveyor is arranged, and the main holding roller and the belt end roller press the conveyor belt of the upper belt conveyor against the conveyor belt of the lower belt conveyor at the rising portions of both conveyor belts, so that the loose materials are sandwiched between the conveyor belts. A method for inspecting and adjusting a steeply inclined conveyor which is wrapped and conveyed, wherein the conveyed material is conveyed in a state in which a pressure sensor is embedded inside the conveyed material, and the conveyed material is separated over the entire length of the rising portions of the two conveyor belts. Measure the pressure inside the object, and based on the measurement result, the main press roller and the belt end roller It is characterized in performing the inspection and adjustment of the pressing force at night.

[0022]

Therefore, when performing inspection and adjustment of the steeply inclined conveyor, first, a pressure sensor is embedded in the bulk material, and in this state, the lower belt conveyor and the upper belt conveyor are moved in the same manner as in the normal transport of bulk material. When driven, the pressure sensor is transported along with the bulky objects.

When the pressure sensor rises along the rising portions of the two conveyor belts together with the bulk material, the pressure inside the bulk material is measured by the pressure sensor, and based on the measurement result, the inside of the bulk material is measured at the rising portion. If there is a part where the pressure of the belt is extremely increased compared to other parts, it is certain that the pressing force of the main pressing roller and the belt end roller corresponding to this part is not appropriate and that adjustment is necessary. And prompt response is possible.

[0024]

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

FIGS. 1 to 4 show one embodiment of the present invention. In the drawings, the portions denoted by the same reference numerals as those in FIGS. 5 and 6 represent the same components, and the horizontal portion of the lower belt conveyor 1 is shown. 9, the bulk material 20 is conveyed while the pressure sensor 33 is embedded in the bulk material 20, and the conveyor belts 7, 1
The pressure inside the bulk material 20 is measured over the entire length of the rising portions 10 and 18 of the main body 7, and based on the measurement result, the main holding roller 25
Inspection and adjustment of the pressing force by the belt end roller 26 are performed.

The pressure sensor 33 is, as shown in FIG.
An earth pressure gauge 37 is fixed to the bottom of a casing 36 in which the base end opening of the steel pipe 34 is closed by a base plate 35 with its pressure receiving part 38 facing up. Silicon rubber 39 is placed on the pressure receiving part 38 of the earth pressure gauge 37. Plate 40, water cushion 41, silicone rubber 42, acrylic plate 43
Is disposed so as to be slidable in the axial direction in the steel pipe 34 constituting the casing 36 and that the upper portion of the acrylic plate 43 located at the uppermost portion projects from the steel pipe 34 by a required amount. The distal end of the steel pipe 34 from which the plate 43 protrudes by a required amount is covered with a vinyl sheet 44, and the pressure of the bulk material 20 acts on the pressure receiving portion 38 of the earth pressure gauge 37 evenly. It is designed to be able to perform accurate measurement even with a small size. In FIG. 4,
Reference numeral 45 denotes a measurement cord connected to the earth pressure gauge 37. In this embodiment, the earth pressure gauge 37 is connected to a display recording device (not shown) via the measurement cord 45.

When performing the inspection and adjustment of the steeply inclined conveyor, first, as shown in FIGS. 1 and 2, a pressure sensor 33 is embedded in the bulk material 20 in the horizontal portion 9 of the lower belt conveyor 1, and in this state, a normal operation is performed. When the lower belt conveyor 1 and the upper belt conveyor 2 are driven in the same manner as when the bulk material 20 is transported, the pressure sensor 33 is transported together with the bulk material 20.

When the pressure sensor 33 moves up along the rising portions 10 and 18 of the conveyor belts 7 and 17 together with the bulk material 20, the pressure inside the bulk material 20 is measured by the pressure sensor 33, and FIG. Is displayed and recorded as shown in FIG.

Main holding roller 25 and belt end roller 26
Is reliably applied to the bulk material 20 conveyed at the rising portions 10 and 18 and if the bulk material 20 is held in an appropriate state, no slip occurs inside the bulk material 20 and the bulk material located on the upper side. Although the pressure due to the weight of the object 20 is not transmitted to the loose object 20 located below the same, the loose object 20 can be stably transported.
In one example of the measurement results shown in FIG.
The pressure inside the bulk material 20 is extremely increased in three portions on the way between 0 and 18 compared with other portions, and the pressing force by the main pressing roller 25 and the belt end roller 26 corresponding to this portion is appropriate. Therefore, it is surely understood that the adjustment is necessary, and a quick response is possible.

In this embodiment, the pressure sensor 33
Is embedded so that the pressure receiving surface thereof is parallel to a plane orthogonal to the conveying direction of the bulk material 20, and the pressure acting on the bulk material 20 in the height direction of the rising portions 10 and 18 is measured. Needless to say, the direction in which the sensor 33 is embedded may be changed, and the pressure in the layer thickness direction or the belt width direction of the loose object 20 may be measured to be used as inspection adjustment data.

In this way, by directly measuring the pressure inside the bulk material 20, it is possible to reliably grasp whether the pressing force by the main pressing roller 25 and the belt end roller 26 is in an appropriate state, and to carry out inspection and adjustment work. High efficiency can be achieved.

The inspection and adjustment method for a steeply inclined conveyor according to the present invention is not limited to the above-described embodiment. Instead of displaying and recording a pressure signal measured by a pressure sensor via a measurement code, the method is not limited to the above embodiment. It goes without saying that various changes may be made without departing from the spirit of the present invention, for example, the display may be received and displayed and recorded on the display recording device in a wireless manner.

[0033]

As described above, according to the method for inspecting and adjusting a steeply inclined conveyor according to the present invention, by directly measuring the pressure inside the bulk material, the pressing force by the main pressing roller and the belt end roller can be properly adjusted. It is possible to obtain an excellent effect that it is possible to surely grasp whether the vehicle is in a proper state and to improve the working efficiency.

[Brief description of the drawings]

FIG. 1 is a schematic explanatory diagram of one embodiment of the present invention.

FIG. 2 is a sectional view taken along line II-II of FIG.

FIG. 3 is a sectional view taken along line III-III of FIG. 1;

FIG. 4 is a side sectional view of a pressure sensor used in one embodiment of the present invention.

FIG. 5 is an overall side view of a steeply inclined conveyor.

FIG. 6 is a sectional view taken along line VI-VI of FIG. 5;

[Explanation of symbols]

 1 Lower Belt Conveyor 2 Upper Belt Conveyor 7 Conveyor Belt 10 Rise 17 Conveyor Belt 18 Rise 20 Bulk 25 Main Holding Roller 26 Belt End Roller 33 Pressure Sensor

──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Kenichi Komori 1-19-10 Mori, Koto-ku, Tokyo Ishikawa Shima-Harima Heavy Industries, Ltd. Koto Office (56) References JP-A-63-313028 (JP, A ) Japanese Utility Model 63-119516 (JP, U) Japanese Utility Model 53-1213 (JP, U) Japanese Utility Model 60-167010 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) B65G 15/18

Claims (1)

(57) [Claims] 1. An upper belt conveyor is disposed above a lower belt conveyor so that a bulk contact surface of the conveyor belt of the lower belt conveyor and a bulk contact surface of the conveyor belt of the upper belt conveyor face each other. By pressing the conveyor belt of the upper belt conveyor against the conveyor belt of the lower belt conveyor by the main holding roller and the belt end roller at the rising portion of the conveyor belt, the bulk material is sandwiched between the two conveyor belts, wrapped and conveyed. Inspection and adjustment method of a steeply inclined conveyor, in a state where a pressure sensor is embedded in the bulk material, the bulk material is conveyed, and the pressure inside the bulk material is measured over the entire length of the rising portion of both the conveyor belts, Check and adjust the pressing force by the main press roller and belt end roller based on the measurement results. Inspection and adjustment method for steeply inclined conveyors, characterized in that: