JP4848257B2 - Conveyor scale of belt conveyor - Google Patents

Description

  The present invention relates to a conveyor scale of a belt conveyor that is incorporated in the middle of a belt conveyor that continuously conveys various conveyed objects by an endless belt and measures the weight of the conveyed object on the endless belt during conveyance.

Conventionally, there is a conveyor scale that is incorporated in the middle of a belt conveyor that continuously conveys various materials such as earth and sand and powder materials with an endless belt, and can measure the weight of the material on the endless belt during conveyance. . This conveyor scale is, for example, a belt comprising a plurality of carrier rollers for winding an endless belt between a head pulley and a tail pulley provided at both ends of a main body frame and supporting the endless belt at an intermediate portion of the main body frame. In the conveyor, a measuring carrier roller is separately arranged between two predetermined carrier rollers, and when the weight of the conveyed product on the endless belt acts on the measuring carrier roller, it is arranged in the vicinity accordingly. The weight value is automatically measured by a weighing means such as a load cell. As described above, for example, Japanese Patent Application Laid-Open No. H10-260260 discloses a roller support that rotatably supports a measuring carrier roller provided in a load detection unit of the belt conveyor. A pair of movable rods that are pin-supported with respect to a support frame at the ends and are supported by a pair of movable rods, and the inner tip portions of the pair of movable rods are connected via a tensile load cell. Are listed.
Japanese Patent Laid-Open No. 9-126871

  However, the conventional conveyor scale described in Patent Document 1 requires a special carrier roller dedicated to metering having a different structure from that of a normal carrier roller, and the apparatus configuration is extremely complicated. In addition, it is difficult to reduce the cost of the apparatus, and the mounting work is not easy.

  In view of the above-mentioned points, the present invention has an object to provide a conveyor scale for a belt conveyor that can be mounted in a short time and easily while keeping the apparatus cost relatively low with a very simple apparatus configuration. And

In order to solve the above-mentioned problem, the conveyor scale of the belt conveyor according to the present invention is configured such that an endless belt is wound between a head pulley and a tail pulley provided at both ends of a main body frame, and a predetermined interval is provided at both inner sides of the main body frame. In the belt conveyor that supports the endless belt by the carrier roller, the carrier stand that pivotally supports the carrier roller is placed and fixed on the locking piece provided at the side. The base material of the beam type load cell is fixed to both ends of the horizontal member, and the carrier stand that supports the removed carrier roller is fixed to the front end of the load cell. is erected Te, and characterized in that the so that you weigh receives the weight of the conveyed on the endless belt at the carrier roller.

As described above, according to the conveyor scale of the belt conveyor according to the present invention, the endless belt is wound between the head pulley and the tail pulley provided at both ends of the main body frame, and provided at predetermined intervals on both inner sides of the main body frame. A carrier stand that pivotally supports a carrier roller is placed on and fixed to the locking piece, and a belt conveyor that supports an endless belt by the carrier roller has a horizontal member placed on the locking piece from which the carrier stand at a predetermined position is removed. The base end of the beam type load cell is fixed to both ends of the horizontal member, and the carrier stand for supporting the removed carrier roller is fixed to the front end of the load cell. is, since the so that you weigh receives the weight of the conveyed on the endless belt at the carrier rollers, very thin conveyor scale It can be configured to Le, whereby with suppressing the cost of the apparatus relatively cheaply, short time and can easily be attached to the belt conveyor, also cost reduction of the working cost can be expected.

  In the conveyor scale of the belt conveyor of the present invention, for example, an endless belt is wound between a head pulley and a tail pulley provided at both ends of the main body frame, and the endless belt is supported at an intermediate portion of the main body frame. In a belt conveyor including a plurality of carrier rollers, a horizontal member is stretched between predetermined carrier rollers and in the transverse direction of the main body frame, and a base of a beam type load cell is provided near both ends of the horizontal member. While the end portion is fixed, a carrier stand of a carrier roller having substantially the same structure as the carrier roller is fixed and erected at the front end portion of the load cell. Further, when the conveyor scale of the present invention is installed on an existing belt conveyor, the carrier roller at an appropriate position is removed, and a horizontal member is stretched over and fixed to the horizontal member. Similarly, the load cell is attached and, at the tip of the load cell, for example, the carrier stand of the carrier roller removed earlier is fixed and erected. Then, when the weight of the transported material on the endless belt is applied to the weighing carrier roller thus attached, it acts on the load cell via the lower carrier stand, and according to the amount of distortion of the load cell caused thereby. The weight of the conveyed product is automatically measured.

  As described above, the conveyor scale of the belt conveyor according to the present invention has an extremely simple apparatus configuration, thereby suppressing the apparatus cost to a relatively low cost and being able to be installed easily in a short time. Can be kept low. In particular, when installed on an existing belt conveyor, the equipment such as the installed carrier roller can be used as it is, and further cost reduction of the apparatus can be expected.

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

  In the figure, reference numeral 1 denotes a belt conveyor that continuously conveys various conveyed objects such as earth and sand, and a head pulley (not shown) and a tail pulley (not shown) provided at both ends of a main body frame 2 as a main body. An endless belt 3 is wound around (not shown), and a plurality of carrier rollers 4 for supporting the endless belt 3 are provided at predetermined intervals in an intermediate portion of the main body frame 2. Reference numeral 5 denotes a carrier stand that rotatably supports the carrier roller 4. Both ends of the carrier stand 4 are placed and fixed on a substantially L-shaped locking piece 6 fixed to the inside of both sides of the main body frame 2. I try to stand upright.

  7 is a conveyor scale of the present invention which is incorporated in the middle of the belt conveyor 1 and measures the weight of a conveyed product conveyed on the endless belt 3 during conveyance, and includes a horizontal member 8, a load cell 9, and the carrier The roller 4 and the carrier stand 5 are mainly composed of a carrier roller 4 'and a carrier stand 5' having substantially the same structure. The horizontal member 8 is a steel material having a substantially U-shaped cross section, and both end portions of the horizontal member 8 are on the locking pieces 6 provided on both sides of the body frame 2 in the same manner as the carrier stand 5 of the carrier roller 4. It can be fixed in a mounted state, and can be stretched across the main body frame 2. The load cell 9 is a beam type load cell that is generally used for weighing, and its base end is located near both ends of the horizontal member 8 as shown in FIGS. The carrier stand 5 ′ of the carrier roller 4 ′ is fastened and fixed to the front end portion of the carrier roller 4 ′ by a bolt 10, and is conveyed on the endless belt 3. When the weight of the object is applied to the carrier roller 4 ′, it acts on the load cell 9 via the lower carrier stand 5 ′, and the weight of the conveyed object is measured according to the amount of distortion of the load cell 9 caused thereby. is doing.

  As described above, the weighing carrier roller 4 ′ installed on the load cell 9 employs substantially the same structure as the normal carrier roller 4 originally provided on the belt conveyor 1, so that most of the carrier roller 4 ′ is used as it is. In addition, it is possible to reduce the cost of the apparatus. In particular, when mounting on an existing belt conveyor, for example, the horizontal member 8, the load cell 9, and the carrier roller 4 'are integrated in advance. If assembled, the mounting operation can be performed by replacing the original carrier roller 4 provided on the locking piece 6, and the work process can be performed very easily and in a short time. Also, it can be expected that the work cost will be lowered.

  In this embodiment, as shown in FIG. 1, two carrier rollers 4 ′ for metering are connected in series between ordinary carrier rollers 4, and the load on the endless belt 3 is transferred by four load cells 9. In this way, a measurement error that may be caused by, for example, a deviation of the endless belt 3 can be reduced as much as possible. However, if there is no such problem, the carrier roller Only one 4 'may be installed and measured by two load cells 9 at both ends thereof.

  Reference numeral 11 denotes a junction box for connecting a signal line from each load cell 9 provided to the carrier roller 4 ′, and an output wiring from the junction box 11 is connected to a display device 12 installed in the vicinity of the belt conveyor 1. On the other hand, the display device 12 performs various arithmetic processes based on the measured values from the load cells 9 sent via the junction box 11, and obtains, for example, the transport amount per time of the transported object, The total transport amount or the like that is the integrated value is displayed. At this time, so that the arithmetic processing is accurately performed, the arithmetic processing is started when the start signal of the belt conveyor 1 is acquired, and the arithmetic processing is stopped when the stop signal is acquired.

  In addition, in performing the above arithmetic processing, in addition to the measured value obtained from the load cell 9, the speed value of the endless belt 3 of the belt conveyor 1 is essential. For example, the speed is almost constant as in this embodiment. If the condition is to be maintained, it is sufficient to set and input the speed value to the display device 12 in advance. Further, if the speed of the endless belt 3 is not constant and greatly fluctuates, for example, a belt speed measuring sensor or the like is provided at an appropriate position of the belt conveyor 1, and a signal line from the sensor is connected via the junction box 11. The display device 12 may be connected, and the display device 12 may perform the above-described calculation processing based on the speed value and the measured value from the load cell 9.

  When using the conveyor scale 7 installed on the belt conveyor 1 in this manner and measuring the weight of various conveyed items such as earth and sand and powder material conveyed by the belt conveyor 1, the speed of the endless belt 3 is previously measured. After the value is set and input to the display device 12, the belt conveyor 1 is driven at a constant speed. When the supply of the conveyed product to the belt conveyor 1 is started, the conveyed product is conveyed on the endless belt 3 at a constant speed. When the conveyed product reaches the upper level of the weighing carrier roller 4 ′, The weight acts on the load cell 9 via the lower carrier stand 5 ′, and the weight of the conveyed product is automatically measured according to the amount of distortion of the load cell 9 caused thereby. The measurement value of each load cell 9 obtained in this way is taken into the display device 12 via the junction box 11, and performs a predetermined calculation process based on the speed value set and input in advance. The transport amount and the total transport amount that is the integrated value are obtained and displayed.

  As described above, the conveyor scale of the belt conveyor according to the present invention has an extremely simple apparatus configuration, thereby suppressing the apparatus cost to a relatively low level and performing the attaching operation in a short time and easily. It is possible to keep the work cost low. In particular, when installed on an existing belt conveyor, the equipment such as the installed carrier roller can be used as it is, and further cost reduction of the apparatus can be expected.

It is a front view which shows one Example of the conveyor scale of a belt conveyor based on this invention. It is a partially cutaway principal part enlarged view of FIG. It is the AA cross-sectional enlarged view which abbreviate | omitted a part of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Belt conveyor 2 ... Main body frame 3 ... Endless belt 4, 4 '... Carrier roller 5, 5' ... Carrier stand 7 ... Conveyor scale 8 ... Horizontal material 9 ... Load cell 12 ... Display device

Claims (1)

An endless belt is wound between a head pulley and a tail pulley provided at both ends of the main body frame, and a carrier stand that pivotally supports a carrier roller is placed and fixed on a locking piece provided at a predetermined interval on both inner sides of the main body frame. In the belt conveyor that supports the endless belt by the carrier roller , a horizontal member is stretched over the locking piece from which the carrier stand at a predetermined position is removed, and beam type load cells are respectively provided at both ends of the horizontal member. While the base end of the load cell is fixed, a carrier stand that pivotally supports the removed carrier roller is fixed to the tip of the load cell, and the weight of the conveyed product on the endless belt is received by the carrier roller. conveyor scale belt conveyor being characterized in that the so that you weigh Te.

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