KR101518494B1

KR101518494B1 - Apparatus of sensing baggage weight for forklift

Info

Publication number: KR101518494B1
Application number: KR1020140037356A
Authority: KR
Inventors: 백승철
Original assignee: 백승철
Priority date: 2014-03-30
Filing date: 2014-03-30
Publication date: 2015-05-11

Abstract

The present invention relates to a load carrying weight for forklift trucks which can analyze the regional characteristics of the cargo transportation by measuring the cargo weight in the left and right chains of the forklift and by performing the arithmetic mean calculation to improve the accuracy and storing the cargo weight information measured by using the GS information A first load cell connected to a chain for lifting and lowering the fork at one side of the fork of the forklift and for detecting the weight of the load carried by the fork from one side, a chain for lifting and lowering the fork from the other side of the fork, A second load cell connected to the second load cell for detecting the weight of the load lifted by the fork from the other side, a weight value signal of the weight value detected by the first load cell and a weight value signal of the load value detected by the second load cell, An average calculation unit for outputting a signal of an average weight value obtained by arithmetic mean calculation, And a control unit for controlling the forklift control unit and the forklift control unit to monitor the operation state and output the average weight value calculated by the control signal to the multimedia signal The touch input / output unit including the touch input / output unit has the effect of increasing the accuracy of the weight value measured and easily analyzing the regional characteristics of the cargo transportation.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a forklift load measuring device,

The present invention relates to an apparatus for measuring a load on a forklift and a method of operating the same, and more particularly, to an apparatus and method for measuring a load on a forklift, (Load) weight information of a forklift truck, and thus can contribute to economic and industrial development by analyzing the regional characteristics of the cargo transportation.

Generally, a forklift is a type of industrial vehicle that allows the lifting or lowering of a cargo of a weight, and is used to move the cargo of a heavy load to a nearby location or to load or unload the cargo to or from various transportation vehicles.

The forklift largely consists of a main body including an engine and a mast assembly provided on the front side of the main body. The mast assembly has a carriage having a fork, and the carriage is moved up and down by a hydraulic cylinder and a chain provided in the mast assembly.

These forklifts can be tilted at 6 ° for the fork and 12 ° at the rear, and two toks tied to the mast are pushed under the cargo to raise the cargo.

In addition, since a large load is applied to the front wheel and a slight rotation is required around the front wheel, it is common to steer the rear wheel and drive the front wheel. Electric power, gasoline, and diesel engines are used as the driving force. However, in the case of an internal combustion engine, a torque converter may be used. In particular, a large power steering may be provided. The fork can be equipped with various accessories depending on the nature of the cargo to be handled.

The mast assembly of the forklift is composed of two or three stages in consideration of the moving height of the heavy object. Generally, a two-stage mast forklift is used to move a heavy object at a low height and a three-stage mast forklift is used to move a heavy object at a relatively high height as in a workshop such as a warehouse.

The three-stage mast forklift is combined with the outer mast, the middle mast and the inner mast in a sequential arrangement from the outside to the inside, thereby enabling the heavy object to be moved at a relatively high height. The three-stage mast forklift first elevates the carriage by moving the carriage on the inner mast, and then moves the middle mast and the inner mast at the same time to raise the height of the carriage. Therefore, unlike the second-stage mast forklift, the third-stage mast forklift is further provided with a hydraulic cylinder and a carriage for moving the carriage on which the heavy object is loaded on the inner mast.

FIG. 1 is a side view of a conventional forklift according to an embodiment of the prior art. FIG. 2 is a schematic front view showing a conventional forklift mast assembly according to an embodiment of the prior art. Figure 3 is a schematic side view of a mast assembly.

The vehicle body 1 is supported by the front drive wheel 3 and the rear steering wheel 5 and the front body is supported by the mast assembly 1. [ 1 is shown in Fig.

2 and 3, the carry girdle 1 is supported by a pulley 2 raised and lowered by a hydraulic cylinder (not shown) mounted on the inner mast 10, And one end of the carry member 1 is fixed to the fixing bar 11 of the carriage 3 and the other end thereof is fixed by a fixing bar 11 mounted on the inner mast 10.

On the other hand, in recent years, it has been common to mount a balancing device on the fork to measure the weight of the load. Usually, the balance device is installed on the fork so that the weight of the load at the moment when the load is loaded on the fork, Therefore, it is possible to prevent the load Or the safety of the driver can be enhanced.

However, in the case of installing the scale device on the fork as described above, the existing forklift has to be replaced with the fork provided with the scale device, so that the cost is increased and the maintenance is difficult.

In addition, the balance device installed on the fork as described above is relatively expensive because it is directly installed on the fork, and it is difficult to accurately confirm the weight of the cargo at the moment when the cargo is loaded, to the user or the driver.

Korean Patent Publication No. 10-2009-0038944 (Apr. 22, 2009) "Chain Retainer for Forklift Truck" Korean Patent Publication No. 10-2011-0013603 (Feb. 10, 2011) " Chain-to-Wheel vibration reduction structure of forklift "

In order to solve the problems and necessities of the conventional art, the load (weight) of the load is measured (measured and detected) in the left and right chains of the forklift, And an object of the present invention is to provide a load measuring device for a forklift for increasing accuracy (accuracy) and an operation method thereof.

It is also an object of the present invention to provide a forklift cargo weighing device and method for operating a forklift truck, which is capable of easily analyzing the regional characteristics of the cargo transportation by storing the weight and position information of the cargo carried by the forklift using the SFP information .

In order to accomplish the above object, the present invention provides a fork-lift cargo weighing apparatus for a forklift, which is connected to a chain for lifting and lowering the fork from one side of a forklift to detect a weight value of a cargo lifted by the fork, A first load cell 1010; A second load cell (1020) connected to a chain for lifting and lowering the fork from the other side of the fork and detecting a weight value of the load lifted by the fork from the other side; A first filter unit 1030 connected to the first load cell 1010 to input a detected weight value and remove a noise signal due to a high frequency introduced from the surroundings; A second filter unit 1040 connected to the second load cell 1020 to input a detected weight value and remove a noise signal due to a high frequency introduced from the surroundings; A first amplification unit connected to the first filter unit 1030 and having no noise removed to amplify the level of the input signal to a value selected from 3 to 5 by a corresponding control signal and outputting the amplified signal to an averaging unit 1070; (1050); A second amplifying unit 1070 connected to the second filter unit 1040, for removing noises, amplifying the level of the input signal to a value selected from 3 to 5 by a corresponding control signal, and outputting the amplified signal to an averaging unit 1070 (1060); A weight value signal of the cargo detected by the first load cell 1010 and a weight value signal of the cargo detected by the second load cell 1020 are input to the control unit 1020, An average calculating unit 1070 for outputting the average value; A forklift control unit 1080 for outputting a corresponding control signal to each functional unit configured as a control signal for connecting to the average operation unit 1070 to perform an average operation and monitoring the operation status; A touch input / output unit 1090 connected to the forklift control unit 1080 and outputting a real weight value corresponding to an average detection value arithmetically averaged by the control signal, as a multimedia signal; . &Lt; / RTI >

The apparatus according to claim 1, further comprising: a geassuste part (1100) connected to the forklift control part (1080) and outputting coordinate information based on the geSPS information at a current position by a corresponding control signal; A reference weight value in a range that can be lifted by the forklift is stored and retrieved by searching for and outputting a real weight value in grams corresponding to the average detection value calculated by the control signal connected to the forklift control unit 1080, A table unit 1110 for outputting the data; A database unit 1120 connected to the forklift control unit 1080 and storing the average detection value and the coordinate information together with the time information according to the control signal; As shown in FIG.

The method of claim 1 or 2, wherein the forklift control unit (1080) analyzes the average detection value to divide the reference weight value into a range of upper and lower limits, When the average detected value is higher than the reference weight value, a color for displaying a warning, a signal for image and sound are simultaneously output to the touch input / output unit 1090 Output unit 1090 so that the touch input / output unit 1090 outputs the selected signal, and inputs a signal selected by touching the touch input / output unit 1090.

According to another aspect of the present invention, there is provided a method for operating a load cell weight measuring device for a forklift, including a first load cell, a second load cell, a first filter unit, a second filter unit, And a touch input / output unit, wherein the average operation unit controls the first load cell to detect the first load cell based on the control of the forklift control unit, A first step of arithmetically averaging a weight value and a weight value detected by the second load cell and outputting the result as an average detection value; A second step of detecting the real weight value corresponding to the average detected value calculated by the average operation unit by the control of the forklift control unit and outputting the detected real weight value to the forklift control unit as a real weight value of the load; The forklift control unit checks a reference weight value of a weight liftable by the forklift from the table unit and outputs a warning signal to the touch input / output unit if the average detection value is larger than the reference weight value; Wherein the forklift control unit checks a reference weight value of a weight that can lift the forklift from the table unit and, if the average detection value is smaller than the reference weight value, And outputting to the touch input / output unit an average detection value corresponding to any one of the divided ranges out of the upper and lower ranges, the corresponding color being differently assigned to the upper range; And the forklift control unit controlling the paper feed control unit to input coordinate information and time information based on the information on the current position in the current position and storing the divided coordinate information in an area allocated to the database unit in association with the average detected value, . &Lt; / RTI >

The present invention having the above-described structure has an advantage of increasing the accuracy of the measured weight value by performing the arithmetic mean calculation on the load (weight) of the load measured in the left and right chains, respectively.

Further, the present invention has an advantage of accurately confirming the coordinate information of the area by the geospatial information and easily analyzing the regional characteristic of the cargo transportation.

1 is a side view of a conventional forklift according to an embodiment of the prior art,
FIG. 2 is a schematic front view showing a general forklift mast assembly according to an embodiment of the prior art; FIG.
FIG. 3 is a schematic side view of a typical forklift mast assembly according to one embodiment of the prior art; FIG.
And
4 is a functional block diagram of a forklift cargo weighing apparatus according to an embodiment of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS The present invention is capable of various modifications and various embodiments, and specific embodiments are illustrated in the drawings and will be described in detail in the detailed description. It should be understood, however, that the invention is not intended to be limited to the particular embodiments, but includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

In the following description, the carriage chain and chain are used in the same sense, and the measurement, measurement and detection are used in the same meaning and can be mixed appropriately in the context.

4 is a functional block diagram of a forklift cargo weighing apparatus according to an embodiment of the present invention.

The load cell weight measuring apparatus for a forklift 1000 includes a first load cell 1010, a second load cell 1020, a first filter unit 1030, a second filter unit 1040 A first amplifying unit 1050, a second amplifying unit 1060, an averaging unit 1070, a geassusting unit 1100, a table unit 1110, a database unit 1120, a forklift control unit 1080, (1090).

The first load cell 1010 is a chain that moves the fork up and down from one side of a carriage (hereinafter, referred to as 'fork') 7 of the forklift 1 shown in FIG. 1 To detect the weight of the cargo lifted by the fork at one side (measurement and measurement), and to output it as the first weight value.

The second load cell 1020 is connected to a chain for lifting and lowering the fork from the other side of the fork, and detects the weight of the fork lifted by the fork from the other side and outputs it as a second weight value.

The first filter unit 1030 is connected to the first load cell 1010 to input a detected weight value or a first weight value signal, removes a noise signal due to a high frequency introduced from the surroundings, do.

Here, the high-frequency signals introduced from the surroundings include high-frequency noise signals generated in the internal combustion engine of the forklift or various electric circuits and electronic circuits, high frequency noise signals generated in other nearby vehicles, nearby electrical appliances and electronic products, Includes all high frequency noise signals that are generated around or artificially around. The same applies below.

The second filter unit 1040 is connected to the second load cell 1020, receives the detected weight value or the second weight value, removes the noise signal due to the high frequency introduced from the surroundings, .

The first amplification unit 1050 is connected to the first filter unit 1030, removes noises, amplifies the level of the input signal to a value selected from 3 to 5 by a corresponding control signal, 1070.

The amplification of the level of the input signal is suitable if it is at a level that can be recognized without error by the averaging unit 1070. According to the repeated experiment, amplification by five times can be recognized without error, .

The second amplification unit 1060 is connected to the second filter unit 1040 and amplifies the level of the input signal by eliminating the noises to a value selected from 3 to 5 by a corresponding control signal, 1070.

The average operation unit 1070 receives the weight value signal detected by the first load cell 1010 and the weight value signal of the cargo detected by the second load cell 1020 and outputs the weight value signal to the corresponding control signal of the forklift control unit 1080 And outputs to the forklift control unit 1080 a signal of an average weight value arithmetically averaged.

The forklift control unit 1080 connects to the average operation unit 1070 and calculates an arithmetic average value of the first weight value measured by the first load cell 1010 and the second weight value measured by the second load cell, And outputs control signals to the respective functional units constituting the fork lift load measuring device for each forklift, monitors the operation states of the respective functional units, and outputs the corresponding data to the allocated area of the database unit 1120 The coordinate information and the time information are stored in association with each other.

The forklift control unit 1080 analyzes the average detection value and divides the reference value into the upper and lower ranges if the average detection value is included in the allowable range below the reference value, Output unit 1090, and controls the touch input / output unit 1090 to simultaneously output a color, an image, and a sound signal for displaying a warning when the average detection value is higher than the reference value, (1090) and inputs a signal selected by the touch.

A signal input from the touch input / output unit 1090 to the forklift control unit 1080 by touching is a signal that can be known as various command signals, a data signal for operation, a program for operation, information for updating (data, All information is included.

The touch input / output unit 1090 is connected to the forklift control unit 1080 and outputs the average weight value calculated by the arithmetic mean calculation in response to the corresponding control signal as a multimedia signal including symbols, letters, numbers, images, images, sounds, voices, do.

The grip portion 1100 is connected to the forklift control portion 1080 and outputs coordinate information based on the information on the current position in the current position according to the control signal.

The GPS information is a signal that is analyzed from signals received from the GPS satellite floating on the earth's orbit and can be analyzed by the longitude, latitude, altitude, time, angular velocity, moving speed, and moving direction at the current position.

The table unit 1110 is connected to the forklift control unit 1080 and searches for a weight value in units of grams corresponding to the average detection value according to the control signal and outputs a weight value in a range where the forklift can lift And outputs it to the forklift control unit 1080 by searching.

The database unit 1120 is connected to the forklift control unit 1080 and stores the average detection value and the coordinate information together with the time information in the allocated area according to the corresponding control signal.

Hereinafter, a method for operating a load measuring device for a forklift will be described in detail with reference to the accompanying drawings. First, a first load cell, a second load cell, a first filter unit, a second filter unit, a first amplifier unit, A method for operating a load balancer for a forklift, the load balancer comprising an average operation unit, a grip portion, a table unit, a database unit, a forklift control unit, and a touch input / output unit, The weight value or the first weight value and the weight value or the second weight value detected by the second load cell are arithmetically averaged to output as an average detection value (step 1).

The table unit detects the weight value corresponding to the average detection value calculated by the average calculation unit by the control of the forklift control unit and outputs the detected weight value to the forklift control unit as a weight value of the load.

The forklift control unit checks a reference value of the weight that can lift the forklift from the table unit, and outputs a warning signal to the touch input / output unit if the average detection value is larger than the reference value (step 3).

Also, the forklift control unit may check the reference value of the weight that can lift the forklift from the table unit. If the average detection value is smaller than the checked reference value, the range of the reference value is divided into the upper range and the lower range, And the average detection values corresponding to any one of the ranges classified as the upper and lower halves are output to the touch input / output unit in a corresponding color differently assigned to the upper and lower ranges (step 4). At this time, it is preferable to output a multimedia signal including signals such as color, sound, image, and video.

The forklift control unit controls the paper feed control unit to input coordinate information and time information based on the paper feed information at the current position and stores the coordinate information in an area allocated to the database unit in association with the average detection value ).

Therefore, the present invention having the above-described structure increases the accuracy of the measured weight value by performing the arithmetic mean calculation of the load (weight) of the load measured (detected) in the left and right chains installed on the forklift forks, This is because it is possible to easily and precisely analyze the regional characteristics of the cargo transportation by analyzing it by storing it in association with the coordinate information of the local area by the information of the geospatial information.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is evident that many alternatives, modifications and variations will be apparent to those skilled in the art.

1000: Weighing device for forklift
1010: first load cell 1020: second load cell
1030: first filter unit 1040: second filter unit
1050: first amplification unit 1060: second amplification unit
1070: Average calculation unit 1080: Forklift control unit
1090: touch input / output unit 1100:
1110: a table part 1120: a database part

Claims

A first load cell (1010) connected to a chain for lifting and lowering the fork from one side of the forklift and detecting a weight value of a load lifted by the fork from one side;
A second load cell (1020) connected to a chain for lifting and lowering the fork from the other side of the fork and detecting a weight value of the load lifted by the fork from the other side;
A first filter unit 1030 connected to the first load cell 1010 to input a detected weight value and remove a noise signal due to a high frequency introduced from the surroundings;
A second filter unit 1040 connected to the second load cell 1020 to input a detected weight value and remove a noise signal due to a high frequency introduced from the surroundings;
A first amplification unit connected to the first filter unit 1030 and having no noise removed to amplify the level of the input signal to a value selected from 3 to 5 by a corresponding control signal and outputting the amplified signal to an averaging unit 1070; (1050);
A second amplifying unit 1070 connected to the second filter unit 1040, for removing noises, amplifying the level of the input signal to a value selected from 3 to 5 by a corresponding control signal, and outputting the amplified signal to an averaging unit 1070 (1060);
A weight value signal of the cargo detected by the first load cell 1010 and a weight value signal of the cargo detected by the second load cell 1020 are input to the control unit 1020, An average calculating unit 1070 for outputting the average value;
A forklift control unit 1080 for outputting a corresponding control signal to each functional unit configured as a control signal for connecting to the average operation unit 1070 to perform an average operation and monitoring the operation status; And
A touch input / output unit 1090 connected to the forklift control unit 1080 and outputting a real weight value corresponding to an average detection value arithmetically averaged by the control signal to a multimedia signal; Wherein the load-measuring device is a load-measuring device for a forklift.

The method according to claim 1,
A paper fusing unit 1100 connected to the forklift control unit 1080 and outputting coordinate information based on the paper-dust information at the current position by a corresponding control signal;
A reference weight value in a range that can be lifted by the forklift is stored and retrieved by searching for and outputting a real weight value in grams corresponding to the average detection value calculated by the control signal connected to the forklift control unit 1080, A table unit 1110 for outputting the data; And
A database unit (1120) connected to the forklift control unit (1080) and storing the average detection value and the coordinate information together with time information in an area allocated by the control signal; Further comprising: a load balancing device for a fork lift truck.

3. The method according to claim 1 or 2,
The forklift control unit 1080
If the average detection value is included in the allowable range below the reference weight value, the reference weight value is divided into the upper and lower ranges, and the touch input and output unit 1090 ),
When the average detected value is higher than the reference weight value, the touch input / output unit 1090 is controlled so that a color for displaying a warning and a signal of image and sound are output simultaneously,
Wherein the touch input / output unit (1090) monitors the touch input / output unit (1090) and inputs a signal selected by a touch.

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