JP2006225150A - Testing machine for measuring electric power consumption by conveyor belt - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a testing machine for measuring electric power consumption by a conveyor belt, capable of measuring electric power consumption by the conveyor belt without an error. <P>SOLUTION: On a surface of an endless belt of the conveyor belt, a large number of low-friction sheets segmentalized in the circumferential direction are arranged. Front edge parts of the respective low-friction sheets are jointed to the surface of the endless belt, and rear edge parts are arranged so as to be superposed on the front edge parts of the adjacent low-friction sheets. On the upper face of the endless belt, an intermediate sheet comprising another low-friction material is interposed and a constant load object is placed. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a conveyor belt power consumption measuring tester, and more particularly to a conveyor belt power consumption measuring tester that can measure the power consumption of a conveyor belt without error.

  The power consumption for driving an endless belt in a conveyor line can vary greatly due to the influence of the belt type, peripheral equipment such as a drive roller, and the weight of the material loaded on the belt. Are known. From such a viewpoint, conventionally, many proposals regarding a conveyor belt for reducing power consumption during driving have been made. (For example, refer to Patent Documents 1 and 2).

  As a method of measuring at the laboratory level how the power consumption of the conveyor belt is affected by peripheral equipment, loading weight, etc., as shown in FIG. In combination with the trough type conveyor C, loading the transported material (not shown) and circulating and transporting it in the direction of the arrow, changing the transport environment such as loading weight and belt speed, It has been done to measure the fluctuations in power consumption.

However, with this method, the weight of the transported material is scattered or dropped, and the weight gradually decreases. In the case of a transported product containing water or a water-absorbing transported product, the weight varies during the measurement. Therefore, there is a problem that the measurement result of power consumption lacks reliability. Furthermore, an error may occur in the measurement result of the power consumption due to the impact force when the conveyed product falls between these two conveyors, and this slight change in power consumption may be overlooked.
Japanese Patent Laid-Open No. 2004-18752 JP 2004-142926 A

  SUMMARY OF THE INVENTION An object of the present invention is to solve the conventional problems as described above, and to provide a conveyor belt power consumption test apparatus capable of measuring the power consumption of a conveyor belt without error.

  In order to achieve the above object, a conveyor belt power consumption measuring test apparatus according to the present invention loads a conveyed product on the upper surface of an endless belt wound between a pair of pulleys, and consumes the endless belt during driving. In the test apparatus for measuring power consumption of a conveyor belt for measuring electric power, a number of low friction sheets that are divided in the circumferential direction of the endless belt are arranged on the surface of the endless belt, and each of the low friction sheets is arranged. The front end of the belt is joined to the surface of the endless belt, and the rear end is disposed so as to overlap the front end of the adjacent low friction sheet, and an intermediate sheet made of another low friction material is disposed on the upper surface of the endless belt. -The gist is that a constant load is loaded with a gap.

  According to the present invention, an intermediate sheet comprising a number of low friction sheets joined to the surface of the endless belt and a low friction material disposed on the upper surface thereof is disposed between the endless belt and the constant load in the conveyor belt. -Since there is a gap between the endless belt and the constant load object when the conveyor belt is driven, a constant load is always loaded on the upper surface of the endless belt. The power consumption can be measured in a state, and an error in power consumption due to a change in the load load does not occur.

  Furthermore, a traction force measuring device is connected to one end of the intermediate sheet, the traction force acting on the intermediate sheet is measured, and this is converted into a power value to be subtracted. Correction can be performed.

  Hereinafter, the configuration of the present invention will be described in detail with reference to the accompanying drawings.

  FIG. 1 is a plan view showing an outline of a conveyor belt power consumption test apparatus (hereinafter simply referred to as a test apparatus) according to the present invention, excluding an endless belt, and FIG. 2 shows an endless belt in the test apparatus of FIG. FIG.

  1 and 2, the test apparatus 1 according to the present invention is wound between two pulleys 2 and 3 having one (right side in the figure) as a driving pulley 2 and the other as a driven pulley 3. An electric motor M is connected to the rotating shaft of the drive pulley 2 via a torque meter 5. Thereby, the power consumption for driving the drive pulley 2 is measured. In the drawing, R1 indicates a carrier roller on the conveyance side, and R2 indicates a return roller on the return side. In this embodiment, the distance between the two pulleys 2 and 3 is about 5 m.

  On the surface of the endless belt 4, as shown in FIG. 3, a number of low friction sheets..., 6, 6,. -Each front end 6a of the seat 6 is joined to the surface of the endless belt 4, and the rear end 6b is disposed so as to overlap the front end 6a of the adjacent low friction sheet 6. Further, a constant load 8 is loaded on the upper surface of the endless belt 4 through an intermediate sheet 7 made of a low friction material different from the above. Here, as a material of the low friction sheet 6 and the intermediate sheet 7, a material having a low friction coefficient such as tetrafluoroethylene is used. In addition, the arrow in a figure has shown the advancing direction of the endless belt 4. FIG.

  As a result, when the conveyor belt is driven, the low friction sheet 6 and the intermediate sheet 7 made of a material having a low coefficient of friction are interposed between the endless belt 4 and the constant load object 8. There is almost no frictional force acting on the object 8, and the conveyor belt is driven with a constant load always loaded on the upper surface of the endless belt, and the load from the constant load object 8 is received. The power consumption in the state can be measured, and an error of the power consumption due to the fluctuation of the load does not occur.

  The above-described low friction sheet 6 is made of an extremely thin plate having a thickness of 0.01 to 0.02 mm. The width of the low friction sheet 6 is the same as that of the endless belt 4 and the length in the circumferential direction. Is longer than the semicircular length of the pulleys 2 and 3 according to the pulley diameter, and in this embodiment is formed to be about 30 cm. In this way, the low friction sheet 6 is formed into a plurality of forms that are divided in the circumferential direction, and the front end 6a is joined to the surface of the endless belt 4, and the rear end 6b is adjacent to the low friction sheet 6. Since it is arranged so as to overlap with the front end 6a, it is impossible for the low friction sheet 6 to rotate around the pulleys 2 and 3 even when the outer diameters of the pulleys 2 and 3 are small. Power does not work. Therefore, the low friction sheet 6 does not deteriorate and does not affect the measured power consumption when the conveyor belt is driven.

  In the test apparatus 1 according to the present invention, in addition to measuring the power consumption value when the weight of the above-described constant load object 8 is variously changed, the influence of the speed of the belt and peripheral devices such as pulleys on the power consumption value is affected. Used to investigate what effect. As described above, research for reducing the power consumption of the conveyor line is performed by grasping the fluctuation state of the power consumption for driving the belt using various factors as parameters.

  In the test apparatus 1 according to the present invention, materials having a low friction coefficient are used for the low friction sheet 6 and the intermediate sheet 7. However, since it is impossible to completely eliminate these friction coefficients, A slight resistance force is generated between the intermediate sheet 7 and the intermediate sheet 7 due to sliding friction. Therefore, according to the present invention, as shown in FIG. 4, an upper surface sheet 9 made of at least one (one in the figure) low friction material between the intermediate sheet 7 and the constant load 8 is used. And a traction force measuring device (not shown) for measuring the traction force acting on the intermediate sheet 7 is connected to one end 7a or 7b of the intermediate sheet 7. The traction force acting on the intermediate sheet 7 is measured and converted into a power value, and this is subtracted to correct the measured power consumption value.

  As a result, the intermediate sheet 7 slides on the lower surface of the upper sheet 9, and the traction force measuring device accurately grasps the traction force acting on the intermediate sheet 7, thereby further reducing the power consumption when driving the conveyor belt. It can be measured accurately.

  Even in this case, the upper surface sheet 9 is made of a material having a low coefficient of friction such as tetrafluoroethylene. Similarly to the embodiment shown in FIG. 3, a tractive force measuring device (not shown) is connected to one end 9a or 9b of the upper surface sheet 9, and the traction force acting on the upper surface sheet 9 is measured. Then, it is preferable to correct the measured power consumption value by converting it into a power value and subtracting it. Thereby, the power consumption at the time of the drive of a conveyor belt can be measured still more correctly.

  In the above-described embodiment, the case where the test apparatus 1 is installed horizontally has been described. However, in the test apparatus 1 according to the present invention, power consumption is measured even when the conveying surface of the endless belt 4 is inclined. In such a case, a rope or the like is connected to the end of the constant load object 8 so that the constant load object 8 does not slide off from the intermediate sheet 7 or the top sheet 9, and the intermediate sheet of the constant load object 8 is connected. 7 or the top sheet 9 may be prevented from sliding off.

  As described above, the test apparatus according to the present invention comprises a number of low friction sheets joined to the surface of the endless belt between the endless belt and the constant load object and a low friction material disposed on the upper surface thereof. By interposing an intermediate sheet and, if necessary, a top sheet made of a low-friction material, power consumption can be measured without error in a state where a constant load is always loaded. In a conveyor line with a constant load, it is possible to grasp the power consumption with various factors as parameters, and therefore it can be widely used for research for reducing the power consumption of the conveyor line.

It is a top view which shows the outline | summary of the test apparatus for power consumption measurement of the conveyor belt of this invention in the state which excluded the endless belt. FIG. 2 is a side view showing a state in which an endless belt is attached to the conveyor belt power consumption measuring test apparatus of FIG. 1. It is a side view which shows the principal part of the testing apparatus for power consumption measurement of the conveyor belt by embodiment of this invention. It is a side view which shows the principal part of the testing apparatus for power consumption measurement of the conveyor belt by other embodiment of this invention. It is a side view which shows an example of the conventional testing apparatus for power consumption measurement of a conveyor belt.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Test apparatus 2 Drive pulley 3 Driven pulley 4 Endless belt 5 Torque meter 6 Low friction sheet 7 Intermediate sheet 8 Constant load 9 Top sheet

Claims (3)

In a test apparatus for measuring power consumption of a conveyor belt, in which a conveyed product is loaded on the upper surface of an endless belt wound between a pair of pulleys, and the power consumption at the time of driving the endless belt is measured.
A number of low friction sheets that divide in the circumferential direction of the endless belt are arranged on the surface of the endless belt, and the front ends of the low friction sheets are joined to the surface of the endless belt, and the rear A conveyor belt in which a constant load is loaded by placing an end on the front end of an adjacent low friction sheet and interposing an intermediate sheet made of another low friction material on the upper surface of the endless belt. Test equipment for power consumption measurement.   An upper surface sheet made of at least one new low-friction material is interposed between the intermediate sheet and the constant load object, and the intermediate sheet is disposed at one end of the intermediate sheet. 2. A conveyor belt according to claim 1, wherein a traction force measuring device for measuring a traction force acting on the belt is connected, the traction force measured by the traction force measurement device is converted into a power value, and the power consumption measurement value is corrected. Power consumption measurement test equipment. A traction force measuring device for measuring the traction force acting on the upper surface sheet is connected to one end of the upper surface sheet, and the traction force measured by the traction force measuring device is converted into a power value for consumption. The test apparatus for measuring power consumption of a conveyor belt according to claim 2, wherein the power measurement value is corrected.

Images