KR20000020762U - An apparatus for adjusting tension of the belt in conveyor system - Google Patents

Abstract

The present invention relates to a belt tensioning device of a belt conveyor that maintains the belt tension of the belt conveyor used for the raw material transport, and forms an endless track by the pulley (110) provided at the front and rear ends The return side of the belt 120 to be conveyed is bent downward by the bend pulleys 151 and 152, and the tension pulley 160 connected with the weight 170 is placed on the upper surface of the belt 120 thus struck. In the device for adjusting the tension of the belt by the weight, the second weight for supporting the weight 170 to the sensor built-in 22 of the first frame 20 for supporting the tension pulley 160 to rotate When the pressure bar 26 of the frame 28 is loaded through the load cell 24 and the load detected by the load cell 24 is reduced, the driving means 30 moves the pulley 110 to reduce the belt. Weight correction belt tension, characterized in that for correcting the tension of 120 As the spilling is carried on a raw material loading unit to thereby automatically detects that interfere with the vertical movement of the weight the weight of moving the belt end portion-side rotation support pulley for adjusting the tension of the belt and prevents shutdown of the conveyor belt.

Description

Belt tensioner of belt conveyor {AN APPARATUS FOR ADJUSTING TENSION OF THE BELT IN CONVEYOR SYSTEM}

The present invention relates to a belt tension control device for maintaining the belt tension of the belt conveyor used for the material transport, and more specifically, the weight that is being transported in the lower part of the weight for weight adjustment belt tension The present invention relates to a belt tension adjusting device of a belt conveyor that is capable of automatically adjusting the tension of a belt by automatically detecting a disturbing movement of the belt by moving a rotation support pulley on the belt end side.

In general, belt conveyor equipment is widely used for raw material transportation in steel mills, and the belts equipped with these belt conveyors to be able to move in endless track should be maintained at an appropriate level of tension.

The belt is typically supported by the head pulley, tail pulley and a plurality of guide rollers for endless track movement, and also has a weight added to the return side belt to maintain the tension of the belt at a constant level. .

The belt tension maintaining structure of the weight system having such a configuration is schematically illustrated in FIG. 1, so that the belt 120 is returned from the pulley 110, and the raw material 130 falls down during the return process. Is transported to the post-process through the chute 140, a plurality of idle pulleys (151, 152) are mounted on the lower surface of the return belt 120, the longitudinal distance apart in the longitudinal direction, the bend pulley The tension pulley 160 is placed on the upper surface of the belt 120 that is changed to the path by the 151 and 152 and the weight 170 is connected to the tension pulley 160.

That is, by applying the weight by the weight weight 170 having a certain weight to the belt 120, the belt 120 is to maintain the proper tension so that the endless track movement can be made smoothly.

However, one of the problems caused by the belt tension adjusting device of the weight method is that, if the chute 140 is blocked and there is a problem in the raw material transfer to the subsequent process through it, the chute 140 is placed on the belt 120 The raw material supplied to the side falls down from the bend pulleys 151 and 152 along the return belt 120. Thus, the dropped raw material 132 is formed as shown in FIG. Stacked underneath

When the raw material 132 loaded on the lower portion of the weight 170 as described above is stacked above a certain height, thereby preventing the weight 170 from moving to the lower side, which is caused by the belt by the weight 170 ( The tension control of 120 is not made properly, thus causing a problem that the operation of the belt conveyor equipment is stopped.

In addition, when the operation of the belt conveyor equipment is stopped, a problem occurs that causes the operation efficiency and productivity of the equipment to be lowered, such as stopping the raw material transfer while removing the raw materials 132 accumulated under the weight 170. .

The present invention was devised to solve such a conventional problem, and its purpose is to prevent the belt tensioning by weight due to the accumulation of raw material under the weight in the belt conveyor for adjusting the tension of the belt by the weight method. Belt tension adjusting device of belt conveyor that can automatically detect and adjust the belt tension by moving the position of the pulley supporting the belt at the end and remove the material accumulated under the weight in the state that the belt conveyor is normally driven. In providing.

1 is a schematic diagram showing a belt tension adjustment configuration of a belt conveyor according to the general weight method;

Figure 2 is a schematic diagram conceptually showing a belt tension adjustment configuration according to the present invention;

Figure 3 is a front configuration diagram showing a first belt tension adjusting unit which is one of the main components of the belt tensioning device of the present invention;

4 is an exploded perspective view of the first belt tension adjusting unit of FIG. 3;

Figure 5 is an external perspective view showing a second belt tension control unit which is one of the main components of the belt tensioning device of the present invention;

Figure 6 is a detail view of the main part of Figure 5;

7 is an operation explanatory diagram for lowering and replacing the tension pulley by the second belt tension control unit of the present invention;

Explanation of symbols on the main parts of the drawings

10 ... first belt tensioning unit

24 ... load cell

30 ... drive means

50 ... second belt tensioning unit

52 ... sliding body

56 ... screw shaft

110 ... pulley

120 ... belt

160 ... tension pulley

170 ... Weight

As a technical configuration for achieving the above object, the present invention, the return side of the belt to be transported to form an endless track by the pulley provided at the front end and the rear end is struck down by the bend pulley, In the device for adjusting the tension of the belt by the weight by placing a tension pulley connected to the weight on the upper surface, the second frame for supporting the weight on the sensor built-in of the first frame for rotating the tension pulley When the pressure bar is mounted on the load cell and the load sensed by the load cell is reduced, the driving means moves the pulley to compensate for the reduced belt tension by providing a belt tension adjusting device of the belt conveyor. All.

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

Figure 2 is a schematic diagram conceptually showing a belt tension adjustment configuration according to the present invention, changing the position of the first belt tension adjustment unit 10 and the pulley 110 for adjusting the tension of the belt by the weight method. By having a second belt tension adjusting unit 50 for adjusting the tension of the belt, the second belt tension adjusting unit 50 is driven by a signal generated from the first belt tension adjusting unit (10).

The first belt tension adjusting unit 10 is shown in more detail in FIGS. 3 and 4, and the path is changed by the bend pulleys 151 and 152 so as to be mounted on the upper surface of the belt 120 struck downward. Both ends of the tension pulley 160 can be rotated by the bearing block 162, the bearing block 162 is fixed to the first frame 20 of the rectangular shape. Of course, the first frame 20 should be formed in a shape that does not interfere with the conveyance of the belt 120 and the rotational movement of the tension pulley 160, in the present invention is formed as a rectangular frame surrounding the tension pulley 160 In addition, the upper part is open at four corners while the lower part is closed, thereby fixing the sensor built-in rod 22 of the rectangular cross-section formed with a proper length in the vertical direction.

At least one of the sensor built-in rod 22 is equipped with a load cell 24 on the inner lower end, and each of the sensor built-in rod 22 is fitted with a square column-shaped pressing rod 26 from the top to the bottom. Of course, the length of the pressure bar 26 should be set according to which sensor interior rack 22 the load cell 24 is equipped with, for example, the load cell 24 is mounted on all the sensor interior racks 22. If the length of the pressurizing rod 26 should be set to be the same, if the load cell 24 is mounted on any one of the sensor built-in 22, the sensor built-in mounting the load cell 24 ( By setting the length of the presser bar 26 fitted to 22 to be shorter than the length of the presser bar 26 fitted to other parts, the height of the upper end of the presser bar 26 and the load cell 24 while pressing the load cell 24 are pressed. The height of the upper end of the pressure zone 26 when the lower end of the pressure zone 26 is not in close contact with the lower surface of the sensor built-in (22) should be set to be the same.

The length of the pressing bar 26 is such that the upper end portion of the upper end of the sensor built-in rod 22 protrudes more upwards, the upper end of the pressing member 26 is four of the second frame 28 made of a rectangular shape It is fixed at each corner.

In addition, the first frame 20 and the second frame 28 should be shaped so as not to interfere with each other, because the shock frame 20 and the second frame 28 should be able to move relative to each other in the vertical direction. And, this relative movement is possible by the configuration that allows the pressure bar 26 to slide up and down inside the sensor built-in (22).

The weight 170 is mounted to a lower portion of the second frame 28.

In addition, the load cell 24 is connected to a driving means 30 made of an electric motor or the like via a wire 32 to provide a detection signal, and the driving means 30 is connected to a signal provided from the load cell 24. By driving the second belt tension adjusting unit 50 to be described later.

The second belt tension adjusting unit 50 is shown in more detail in FIG. 5, which is configured to support one end of the belt 120 to be rotatable so as to change a path to move in an endless track. It is equipped with, both ends of the pulley 110 is supported to be rotatable by the bearing block 112, the bearing block 112 to the sliding body 52 to be able to move in the advancing direction of the belt 120. It is fixed integrally.

The sliding body 52 is received at both ends of the belt 120 so as to be slidable in the longitudinal direction in the guide frame 54 in which the longitudinal direction is set in the same direction as the traveling direction of the belt 120, and the sliding body 52 Is also fitted to the screw shaft 56 installed in the longitudinal direction of the guide frame 54 to be able to move in the longitudinal direction along the guide frame 54 by the rotation of the screw shaft 56.

Both ends of the screw shaft 56 are rotatably supported by a bearing block 60 mounted on the installation frame 58 supporting the guide frame 54.

In addition, a bevel gear 62 is mounted on one end of the screw shaft 56, and the bevel gear 62 is mounted on the installation frame 58 in the width direction of the belt 120 so as to be rotatable. Engaged in the bevel gears 66 respectively provided at one end of the transmission shaft 64, the rotary power is provided.

In addition, the power transmission shaft 64 is rotated by the power shaft 34 receives the rotational power from the drive means (30).

In addition, the drive means 30 is equipped with a torque sensor not shown, so that the torque transmitted to the drive means 30 can be detected by the tension of the belt 120, or limit switch not shown It is installed in the movement path of the sliding body 52 and the drive means 30 receives the detected value so that the position of the pulley 110 can be grasped.

Of course, the driving means 30 may be manually operated by the operator to adjust the position of the pulley 110.

In the device of the present invention having such a configuration, in the normal case where the raw material 132 is not stacked below the weight 170, the belt tension control by the weight 170 is applied in the same manner as in the prior art. At this time, the load cell 24 provided in the first belt tension control unit 10 is pressed under the load of the weight weight 170 through the pressing table 26, the second belt tension control unit 50 The pulley 110 maintains the initial setting state.

If the raw material 132 is accumulated in the lower portion of the weight 170 and the weight 170 is prevented from moving downward, and the belt tension adjustment is not performed properly, the weight of the weight 170 is pressed by the load of the weight 170. The load cell 24 detects that the load transmitted from the weight 170 is reduced, which is immediately provided to the drive means 30.

The drive means 30 receives the signal of the load cell 24 to drive the power shaft 34 to rotate, so that the sliding body 52 moves along the guide frame 54 by the rotation of the screw shaft 56. As a result, the pulley 110 is moved in the direction of increasing the tension of the belt 120.

Of course, the degree of movement of the pulley 110 may be roughly adjusted by the operator by visually stopping the driving means 30, or the torque value detected by the driving means 30 may reach a preset torque value. When the driving means 30 is stopped, the degree of movement of the pulley 110 may be adjusted or the degree of movement of the pulley 110 may be adjusted by the position of the sliding body 52 detected by the limit switch (not shown). .

That is, when the weight of the belt is reduced because the weight 170 is not lowered, the pulley 110 is moved by the second belt tension adjusting unit 50 to compensate for the reduced belt tension to drive the belt. It is to make it work normally.

When the second belt tension adjusting unit 50 operates as described above, the worker is notified that the tension of the belt is being adjusted by the second belt tension adjusting unit 50 through a buzzer means, which is separately provided. By the signal, the belt conveyor removes the raw material accumulated in the lower portion of the weight 170 during the normal operation.

After the worker removes the material accumulated in the lower portion of the weight 170, and releases the belt tension control state of the second belt tension control unit 50, the drive means 30 is driven to initialize the pulley 110 By returning to the state, the first belt tension control unit 10 can continuously perform the belt tension, and the second belt tension control unit 50 maintains the standby state.

In addition, the second belt tension control unit 50 of the present invention can be usefully used during the replacement operation of the tension pulley 160, which is the driving means when replacing the tension pulley 160 is maintained at a height ( When the pulley 110 is moved in the direction in which the path of the belt 120 is shortened by driving 30, the tension pulley 160 falls down as shown in FIG. 7, thus the tension pulley replacement jig 190 It is possible to replace the tension pulley 160 relatively easily.

As described above, according to the belt tensioning device of the belt conveyor according to the present invention, when the tension of the belt is adjusted by the weight method, the raw material is in the lower part of the weight and loses the belt tension control function. By moving the supporting pulley to compensate for the reduced belt tension, the belt conveyor can be operated normally.In this state, the worker removes the raw material accumulated under the weight, and then puts it on the weight again. By allowing the belt tension adjustment to be made, it has an excellent effect of improving the operating efficiency of the equipment.

Claims (2)

The return side of the belt 120, which is formed by the pulley 110 provided at the front end and the rear end, is conveyed downward by the bend pulleys 151 and 152. In the device for adjusting the tension of the belt by the weight by placing the tension pulley 160 connected to the weight (170) on the upper surface, The pressure bar 26 of the second frame 28 supporting the weight 170 on the sensor interior 22 of the first frame 20 to support the tension pulley 160 rotates the load cell 24. When the load sensed by the load cell 24 is reduced, the drive means 30 moves the pulley 110 to correct the tension of the reduced belt 120, characterized in that the belt conveyor belt Tension regulator. The method of claim 1, Mig body 52 fixing the bearing block 112 for supporting the rotation of both ends of the pulley 110 is mounted so as to move in the longitudinal direction to the guide frame 54 provided in the advancing direction of the belt 120 The sliding body 52 is coupled to the screw shaft 56 provided with the rotational power by the drive means 30 is moved in the longitudinal direction of the guide frame 54, belt tension of the belt conveyor Regulator.