KR20030041536A - An apparatus for measuring the load weight in continuous meter - Google Patents

Abstract

PURPOSE: An apparatus for detecting a load weight is provided to precisely detect the load weight and to improve the workability by allowing the apparatus to measure only a vertical load. CONSTITUTION: A load weight detecting apparatus(1) includes a pivot section(10) and a transferring section(30). The pivot section(10) has an upper pivot(11), which is integrally connected to a bracket(12), and a lower pivot(13), which is integrally connected to a supporter(14). The transferring section(30) includes a lever shaft(31) and a housing(33). The lever shaft(31) is installed in a fixing member(31a) arranged in line with a conveying roller(104). A nut member(34) is formed at an upper end of the lever shaft(31). The housing(33) is fixedly installed at an upper surface of the supporter(14) so as to protect a load shell(106). A stopper(39) is provided at a lower portion of the lever shaft(31) so as to prevent the load shell(106) from being damaged.

Description

Unit weight detection device for transport of continuous meter {AN APPARATUS FOR MEASURING THE LOAD WEIGHT IN CONTINUOUS METER}

The present invention relates to an apparatus for detecting a unit weight of a transport object in a continuous meter, and more particularly, a transport material loaded on a belt and moving in one direction is not affected by a horizontal force or a left and right twist force due to belt driving. In addition, it is possible to measure only the force in the vertical direction that enables accurate weight measurement, and it is related to the unit weight detection device of the transport of a continuous weighing instrument which can improve the precision without being affected by dust and seasonal changes.

In general, the continuous weighing machine installed in the steel mill measures the unit weight of the raw material conveyed on the conveyor belt and the conveying speed of the belt, calculates the discharge amount by multiplying the measured weight value and the speed value, and matches the target discharge amount. The discharge amount is controlled by adjusting the speed of the belt driving motor as much as possible.

Here, the unit weight detection is very difficult to measure because the object to be measured continues to move on the belt, and how precisely the unit weight can be largely influenced by how accurately the unit weight is detected to detect the unit weight. Unit weight detection device should be designed to be strong against various disturbances.

As shown in FIG. 1, a method of detecting a raw material discharging amount by the continuous meter includes two idle rolls 105 which are idle-rotated in the process of transporting the raw material by a belt 103 circulating in an endless track type. Measured by a weighing roller 104 disposed between the plurality of weighing rollers. The weight of the raw material on the weighing roller 104 is measured by a load shell converter 121 electrically connected to the load shell 106. The signal is converted into a signal and input to the analog input / output card 125 of the continuous weighing controller 120. In addition, the speed of the belt 103 detects the number of revolutions of the motor 109 driving the belt 103 using the speed detector 108, which is converted into a standard signal by the speed converter 122, thereby converting the analog input / output card 125. ) To calculate the speed of the belt 103 using the rotational speed of the motor 109, the circumference of the head pulley 102, and then multiply by the unit weight to detect the discharge amount.

In FIG. 1, reference numeral 123 is a power source, 124 is an arithmetic processor, and 126 is a digital input / output card.

On the other hand, the device 130 for detecting the unit weight of the transport is equipped with a conventional continuous meter as shown in Figure 2, the pivot 130 to measure the weight of the transport loaded on the belt 103 traveling in one direction By transferring the weight of the load shell 106 to the lower surface of the belt 103 in contact with the outer circumferential surface of the belt 103 is converted into a voltage signal, such a conventional device 130 is The left and right roller shafts 104 of the bearing roller 104 are seated at one end, and a balance weight 139 is disposed at the other end, a rotation shaft 137a of the bracket 137 and a pivot bearing ( 134 is assembled via a pivot 133, which is fixed on the support 135, and a lever shaft 131 connecting between the rod shell 106 and the operating shaft 137b of the bracket 137. On the other hand, the front end of the lever shaft 131, the load shell 106 from the overweight No. A stopper 132 is arranged to haejulsu.

Accordingly, the transport object on the belt 103 traveling in one direction exerts a force on the weighing roller 104 during the transfer, and the vertical force transmits the force to the right side of the drawing with the pivot 133 as a point. This force is applied to the load cell 106 through the lever shaft 131 so that the load shell 106 generates a voltage signal proportional to the force.

However, the conventional unit weight detection device 130 has a shaft 133 which is fixed on the bracket 137 and the support 135 to which the bearing roller 104 is assembled to which the force of the transported material is transmitted. Since it is connected to the pivot bearing 134 adopting the method, foreign matter easily penetrates into the connection portion between the rotating shaft 137a and the pivot bearing 134, and thus the point function of the pivot 133 is weakened when used for a long time. This resulted in a poor precision. In addition, since the weight of the object placed on the belt 103 traveling in one direction is measured, separation in the moving direction of the bearing roller 104, which is a force transmission medium, is likely to occur, and the left and right sides of the belt 103 are easily generated. The left and right separation of the pivot bearing 134 due to the pull is generated, which acted as an error factor.

Secondly, the lever shaft 131 is used to transfer the force less than the actual weight to the load cell 106 by using the lever principle, where a large error in weight is caused by the small variation of the lever shaft 131. As it contains factors, it is possible to cause errors due to the contraction of iron due to the change of seasons, and there are differences in factors due to corrosion and pinching of foreign substances, which makes it difficult to detect accurate discharge amount.

Therefore, the present invention has been proposed to solve the conventional problems as described above, the object of which is to be loaded on the belt and moving in one direction is not affected by the force in the horizontal direction or the force of the left and right distortion according to the belt drive. It is possible to measure only the force in the vertical direction, which enables accurate weight measurement, and it is not affected by dust, etc., and it is possible to improve the unit weight detection accuracy of the transport and improve the blast furnace operation in the post process. To provide.

1 is a schematic diagram showing a typical continuous meter,

Figure 2 is a perspective view showing a unit weight detection device of the transport of the continuous meter according to the prior art,

Figure 3 is a perspective view showing a unit weight detection device of the transport of the continuous weighing machine according to the present invention,

Figure 4 is a side view showing a unit weight detection device of the transport of the continuous meter in accordance with the present invention.

Explanation of symbols on the main parts of the drawings

11 .... Upper pivot 12 .... Bracket

13 .... Lower pivot 14 .... Support

15 .... Vertical Plates 16 .... Horizontal Plates

31 .... Lever Shaft 33 .... Housing

35 .... through hole 39 .... stopper

103 ... belt 104 ... bearing roller

As a technical configuration for achieving the above object, the present invention,

In the device for continuously measuring the discharge amount of the transport material mounted on the belt circulating in the endless track type,

An upper pivot integrally installed at one end of a bracket rotatably assembled at left and right ends of the weighing roller in contact with a lower surface and an outer circumferential surface of the belt, and assembled via a vertical and horizontal plate through the upper pivot and a support object. Pivot part having a lower pivot that is fixedly installed to serve as a point when measuring the weight of the transport;

Vertically installed at the other end of the bracket, the lower end is formed with a lever shaft corresponding to the load shell, the through hole through which the lever shaft passes without interference on the upper surface, the load shell is installed inside, fixed to the support object According to the present invention provides a unit weight detection device of a continuous weighing device, characterized in that it comprises a transmission unit for transmitting the force of the transport having a housing to be installed.

Hereinafter, the present invention will be described in more detail with reference to the drawings.

3 is a perspective view showing a unit weight detection device of a continuous weighing device according to the present invention, Figure 4 is a side view showing a unit weight detection device of a continuous weighing device according to the present invention.

That is, the apparatus 1 of the present invention, as shown in Figures 3 and 4, in the process of transporting the transport material on the belt while being circulated in one direction by the driving force of the motor 109, the belt 103 The weighing operation of the cargo in the weighing roller 104 in contact with the lower surface and the outer circumferential surface of c) can be performed accurately in a direct load method without being affected by external conditions such as dust and temperature. Is composed of a pivot unit 10, the transmission unit 30 and the like.

That is, the pivot part 10 serving as a point during the weighing operation on the transport material on the belt 103 has an upper pivot 11 which is integrally connected to the bracket 12 which is a moving member, It consists of a lower pivot 13 which is integrally connected to the support 14, the bracket 12 is of the bearing roller 104 in contact with the lower surface and the outer circumferential surface of the belt 103 traveling in one direction during the conveyance transport operation It is a member rotatably assembled on both left and right ends and directly affected by the weight of the transport object. The upper pivot 11 is a front side from the connecting portion to which the left and right ends of the roller shaft of the bearing roller 104 are assembled. It is a rectangular parallelepiped fixing member which is integrally provided at the tips of the left and right pairs of brackets 12 separated by a certain distance to the right.

In addition, the support 14 is a fixing member disposed side by side in the running direction of the belt 103 on the left and right ends of the belt 103, the upper, lower pivot (11, 13) is a plurality of screw members It is assembled via the vertical and horizontal plates 15 and 16 which are fastened as 15a and 16a.

The upper and lower pivots 11 and 13 are configured in the same manner as the brackets 12 which are assembled to the left and right ends of the weighing roller 104, and the upper pivot 11 is transported in the vertical plate. 15 is pivoted forward and backward with the lower pivot 13 as a point, and is pivoted vertically with the lower pivot 13 as a point by the horizontal plate 16.

Here, the vertical and horizontal plates 15 and 16 are assembled in a crisscross shape between the upper and lower pivots 11 and 13 at a predetermined interval so as not to be affected by foreign substances such as dust.

On the other hand, the transmission unit for transmitting the force of the transport 30 is provided with a lever shaft 31 and the housing 33, the lever shaft 31 is a bracket provided on both left and right ends of the bearing roller 104 ( 12) the upper end is screwed vertically to the screw hole of the 'b' shaped fixing piece 31a which is integrally provided, and the lower end of the free end is fixed to the interior of the housing 33, the load shell 106 Corresponds to each other.

Here, the lever shaft 31 is installed on the fixing piece 31a provided on the same extension line as the bearing roller 104, the fixing piece so as to adjust the height of the lower end interfered with the load shell 106 A height adjusting nut member 34 is provided on the upper end of the screw hole of the screw hole 31a.

In addition, the housing 33 is a receiving member that is fixed to the upper surface of the support 14 corresponding to the lower portion of the fixing piece 31a and protects the rod shell 106 fixed thereto. The through-hole 35 is formed so that the vertically installed lever shaft 31 can pass without interference, and the inner diameter thereof is penetrated to a sufficient size so that there is no interference with the moving lever shaft 31 during the transport measurement. It is preferable.

In addition, the lower portion of the lever shaft 31 is prevented from damaging the load shell 106 due to overweight when the weight of the transported goods placed on the belt 103 and conveyed in one direction to the load shell 106. The stopper 39 is provided and configured to be able to do so.

The operation and effects of the present invention having the configuration as described above will be described.

In the process of circularly driving the belt 103 loaded with the heavy object by the rotational driving force of the motor, the weight of the object is transmitted to the weighing roller 104 disposed such that the lower surface and the outer circumferential surface of the belt 103 come into contact with each other. When the upper pivot 11 and the lower pivot 13 fixed to the support 14 are connected to the front ends of the brackets 12 assembled to the left and right ends of the weighing rollers 104, the horizontal plates 15 and 16 are disposed. Since it is connected to each other via), the weight in the direction of gravity of the transport delivered on the weighing roller 104 directly to the load shell 106 with the vertical and horizontal plates 15 and 16 as a point. It can be delivered.

That is, the force in the weight direction is transmitted to the weighing roller 104 by the weight of the transported object placed on the belt 103 traveling in one direction, and one end of the bracket 12 on which the weighing roller 104 is mounted is weighed. Will be pressed directly underneath.

Since the upper pivot 11 is assembled to the other end of the bracket 12 via the lower pivot 13 and the horizontal plate 16 fixed on the support 14, the weighing roller 104 is The fixing piece 31a provided on the same extension line as the roller shaft is pivoted up and down with the lower pivot 13 as the point by the horizontal plate 16.

And, the upper end is vertically installed on the fixing piece (31a), the lever shaft with the free end is arranged at a predetermined interval, 1mm with the detection end 106a of the rod shell 106 fixedly installed in the housing 33 While moving below 31, the weight of the transported object is transferred to the load shell 106 and detected.

At this time, as the belt 103 is rotated, force pull occurs in the belt moving direction and the left and right directions. The force tilt in the belt moving direction is minimized by the horizontal plate 15, and the force tilt in the left and right directions is vertical. Minimized by the plate 16 can reduce the error in weighing.

According to the present invention as described above, the position fixed with the upper pivot connected to the weighing roller to precisely perform the weighing operation for the transport regardless of external environmental factors such as shrinkage of the metal due to dust and seasonal changes By installing horizontal and vertical plates in the shape of a cross between the lower pivots, it has a direct load type force transmission structure that can minimize error factors from the outside, improving detection accuracy per unit weight, and precisely detecting discharge quantity. In this way, it is possible to secure a stable sintered ore quality as well as to significantly improve the blast furnace operation as compared with the prior art.

While the invention has been shown and described with respect to specific embodiments thereof, it will be apparent to those skilled in the art that various changes and modifications can be made without departing from the spirit or scope of the invention as set forth in the claims below. I would like to clarify that knowledge is easy to know.

Claims (3)

In the device for continuously measuring the discharge amount of the transport material mounted on the belt 103 circulating in the endless track type, An upper pivot 11 integrally installed at one end of the bracket 12 rotatably assembled at left and right ends of the bearing roller 104 in contact with a lower surface of the belt 103 and an outer circumferential surface thereof, and the upper pivot 11 A pivot part 10 which is assembled with the vertical and horizontal plates 15 and 16 as a medium, and has a lower pivot 13 fixedly installed on the support 14 to serve as a point when weighing a transport object; Vertically installed at the other end of the bracket 12, the lower end has a lever shaft 31 corresponding to the load shell 106, and the through hole 35 through which the lever shaft 31 passes without interference to the upper surface The load shell 106 is installed therein, and has a housing 33 fixedly mounted on the support 14 to include a transmission unit 30 for transmitting the force of the transport. Shipment unit weight detection device. The method of claim 1, The vertical and horizontal plates (15) and (16) are separated from each other at a predetermined interval so as not to be affected by foreign substances such as dust, and are assembled in a crisscross shape between the upper and lower pivots (11, 13). Shipment unit weight detection device. The method of claim 1, The lever shaft 31 is installed on the fixing piece 31a provided on the same extension line as the bearing roller 104, and the fixing piece 31a to adjust the height of the lower end interfered with the load shell 106. Unit weight detection device for the transport of the continuous weighing device, characterized in that it comprises a height adjusting nut member 34 on the upper end of the screw hole.