KR101397244B1 - Air leakage detection system for pallet carriage and air leakage detection method for pallet carriage - Google Patents

Abstract

An oxygen sensor 15 for measuring the oxygen concentration in the window box 7 and an oxygen sensor 15 attached to the side surfaces of the respective pallet trucks 6 to detect the pattern of the two- A reading device 50 for reading the identification information described in the pattern 60 of the two-dimensional code at a position above the oxygen sensor 15; A storage unit 30 in which the concentration and measurement time and the identification information and the reading time of each pallet truck 6 read by the reading apparatus 50 are stored; And display means (42) for displaying the values in correspondence with each other.

Description

TECHNICAL FIELD [0001] The present invention relates to an air leakage detection system for a pallet truck, and a method for detecting air leakage in a pallet truck. BACKGROUND OF THE INVENTION 1. Field of the Invention [0002]

TECHNICAL FIELD The present invention relates to a technique for detecting damage to pallet trucks by detecting the airflow of a pallet truck used for producing sintered ores, which is a blast furnace raw material.

11 and 12, an apparatus 20 for producing sintered ores (hereinafter referred to as sintering furnace), which is a blast furnace raw material, will be described. As shown in Fig. 11, the sintering machine 20 has a plurality of pallet trucks 6 arranged continuously connected in the moving direction and moving in the elliptical main track. The pallet truck 6 is in the form of a box whose upper part is opened, and loads the raw material of the sintering light to be described later. As shown in Fig. 12, for example, a lattice-shaped vent portion 6a is formed on the bottom surface of the pallet truck 6 so that the raw material can not pass but can be ventilated. As shown in Fig. 11, a plurality of window boxes 7 in the form of a bag are fixedly provided adjacent to the moving direction of the pallet truck 6 below the trajectory of the pallet truck 6. Fig. The upper opening of the window box 7 faces the vent portion 6a of the pallet truck 6. [ In the example shown in the drawing, a bag-shaped window leg 8 branched in a bifurcated form is formed below the window box 7. [ Each window leg 8 is connected to a main duct 9. The main duct 9 is connected to an intake device 11 such as a blower. When the intake apparatus 11 is driven, air is allowed to flow downward from above the pallet truck 6. [ An air seal bar 10 which is in contact with the upper end of the window box 7 is provided at the lower end of the pallet truck 6 in the up and down direction to prevent the air between the moving pallet truck 6 and the window box 7 The contact portion between the air seal bar 10 and the pallet truck 6 is coated with heat-resistant grease.

Each of the plurality of raw material tanks 1 stores raw materials of sintered ores composed of iron ore, coke, and limestone. The mixer 2 is a device for mixing the raw materials supplied from the raw material tank 1 with mixing while adding water. The raw material assembled by the mixer 2 is charged into the surge hopper 3 and charged into the pallet truck 6 by the drum feeder 4 provided at the lower end of the surge hopper 3, Similarly, a raw material layer 99 is formed. At the downstream position adjacent to the drum feeder 4, an ignition furnace 5 having a plurality of burners is arranged, and the raw material charged into the pallet truck 6 is ignited by the ignition furnace 5. The coke in the raw material layer 99 is burned when the air flows downward from above the raw material layer 99 and the raw material layer 99 is successively fired from above to below by the heat of the combustion. Along with the movement of the pallet truck 6, firing of the raw material layer 99 progresses and sintered light is continuously produced for about 30 minutes to 50 minutes. The pallet truck 6 is 100 to 160 units, and the time required for the pallet truck 6 to travel around the main track is one hour to one and a half hours.

The inner side upper portion 6d of the end surface liner 6c located below the side wall 6b of the pallet truck 6 flows downward from the upper raw material layer It is cut off by the friction with the raw material. As a result, the ventilation resistance of the inner upper portion 6d of the defective end face liner 6c becomes smaller, and air is preferentially circulated in the portion where the raw material layer 99 is in contact with the side wall 6b 12), the flow rate of air to the raw material layer 99 is reduced. Further, the air seal bar 10 is scratched and damaged by abrasion due to friction with the upper end portion of the window box 7. Then, air is infiltrated from the damaged portion of the air seal bar 10 (airflow 2 shown in FIG. 12), and the flow rate of air to the raw material layer 99 is reduced. If the flow rate of the air to the raw material layer 99 is reduced, the firing of the raw material layer 99 becomes insufficient. In order to prevent this, conventionally, the suction amount in the intake apparatus 11 is increased by the amount of the airflow, The flow rate of air to the raw material layer 99 is supplemented. As a result, the amount of power consumption for driving the intake apparatus 11 is increased, and unnecessary energy is consumed. Particularly, when the inside upper portion 6d of the end surface liner 6c is cut and damaged, air flows in preference to the damaged portion, so that the powdery raw material 99 flows to the damaged portion, (6d) is scraped off by abrasion, and damage is accelerated progressively. Therefore, in the past, the worker assesses the degree of damage of the end surface liner 6c visually by the naked eye, and if the end surface liner 6c is severely damaged, the pallet truck 6 is exchanged I was repaired.

However, since the damage of the end surface liner 6c was visually evaluated by the naked eye, the evaluation standard of the damage was not constant depending on the operator. Therefore, when the pallet truck 6 which can be used yet is repaired, the maintenance cost of the pallet truck 6 is unnecessarily increased. On the other hand, the pallet truck 6 Is used continuously, there is a problem that the amount of power consumption for driving the intake apparatus 11 is increased. Further, there is a problem that the worker is constrained for a long time in order to evaluate the damage of the end surface liner 6c. In addition, although each pallet truck 6 has a lot number, there is a problem that the pallet number is incorrectly collated when the damage to the end surface liner 6c is evaluated.

Therefore, as shown in Patent Documents 1 to 3, an oxygen sensor is disposed in the window box 7 to measure the concentration of oxygen contained in the gas flowing through the window box 7, Has been proposed. In Patent Document 3, a position measuring device is provided in each of the pallet trucks 6 to measure the position of the pallet truck 6, and based on the oxygen concentration measurement value obtained from the oxygen sensor and the position information of the pallet truck 6, There is a description of specifying that the pallet truck 6 being blown is specified. However, Patent Document 3 does not specifically disclose how to measure the position of the pallet truck 6 by any method and specify the pallet truck 6 being blown.

Japanese Patent Laid-Open No. 61-195928 Japanese Patent Application Laid-Open No. 6-300459 Japanese Patent Application Laid-Open No. 2009-275239 Japanese Patent Application Laid-Open No. 2010-007904 Japanese Patent Application Laid-Open No. 61-195929

SUMMARY OF THE INVENTION It is an object of the present invention to solve the above problem and to provide a technique capable of detecting a pallet bog which is caused by a damage.

In order to solve the above problems,

A plurality of pallet trucks connected continuously in the moving direction of the main track and formed with a ventilating portion on the bottom surface and loaded with the raw material of the sintered ores,

A plurality of window boxes disposed below the main track,

And a suction device for sucking the inside of the window box and allowing the air to flow downward from above the pallet carriage,

An oxygen sensor for measuring an oxygen concentration in the window box,

A display member which is attached to a side surface of the pallet truck and displays a two-dimensional code written by patterning the identification information of the pallet truck,

A reading device for reading the identification information described in the display member;

A storage unit for storing the oxygen concentration value in the window box measured by the oxygen sensor and the identification information of the pallet truck read by the reading device;

And display means for displaying the identification information and the oxygen concentration value stored in the storage unit in association with each other.

Wherein the storage unit further stores a measurement time of the oxygen concentration value by the oxygen sensor and a readout time of the identification information of the pallet truck by the reading device,

From the readout time stored in the storage unit, a passage start time and a passage end time on the oxygen sensor of the pallet truck, and the oxygen concentration value stored in the storage unit between the passage start time and the passage end time Further comprising: a counter oxygen concentration correlating means for correlating the identification information of the pallet truck with the identification information of the pallet truck,

And the display means displays a history of the oxygen concentration values of the pallet trucks associated with each other.

Thereby, it is possible to detect the degree of damage of each pallet truck, and it is possible to determine the deterioration cycle.

And alarm notification means for notifying the alarm by specifying the pallet truck when the oxygen concentration value associated with the pallet truck is equal to or greater than a predetermined threshold value.

Arranging the identification information of the pallet truck in a descending order of the number of times that the oxygen concentration value associated with the pallet truck stored in the storage unit is greater than or equal to a predetermined value, And a payload priority determining unit for determining a payload to be used as a pallet load.

Thereby, it becomes possible to recognize the pallet truck to be repaired first.

The two-dimensional code displayed on the display member has a supplementary code, and the identification information of the pallet truck is redundantly made redundant by the supplemental code.

Thereby, even if the surface of the display member displaying the two-dimensional code is damaged by dust, it becomes possible to read the identification information of the pallet truck. As a result, it is possible to reliably detect the pallet truck on which the air leakage occurs due to the damage.

A plurality of pallet trucks connected continuously in the moving direction of the main track and formed with a ventilating portion on the bottom surface and loaded with the raw material of the sintered ores,

A plurality of window boxes disposed below the main track,

And a suction device for sucking the inside of the window box and allowing air to flow downward from above the pallet carriage,

Measuring oxygen concentration in the window box;

Reading identification information of the pallet truck described in a two-dimensional code displayed on a display member attached to a side surface of the pallet truck,

Displaying the measured oxygen concentration value in the window box in correspondence with the read identification information of the pallet truck,

And a control unit.

According to the present invention, since the identification information is read from the display device indicating the two-dimensional code attached to the side surface of each pallet truck to the reading device and the read identification information is displayed in association with the oxygen concentration value in the window box , It is made possible to detect the pallet bog which is generating the leakage due to the damage of the pallet bogie. Thereby, priority can be given to the pallet trucks requiring maintenance, and efficient pallet truck replacement becomes possible. In addition, it becomes possible to grasp the history of the oxygen concentration value of each pallet truck, and it is possible to determine the deterioration cycle of each pallet truck and prevent the increase of the windpower in advance. As a result, the increase of the air leakage is suppressed, and the power consumption for driving the intake apparatus can be reduced.

In addition, in the case of replacing approximately one-half of the pallet trucks of 160 trucks, the power consumption for driving the intake system can be reduced by about 5%.

Figure 1 is a side view of a pallet truck and window box.
2 is a cross-sectional view of a pallet truck and a window box.
3 is a block diagram of the processing unit.
4 is a block diagram of a reading device.
5 is a flowchart of the main processing.
6 is a graph showing the oxygen concentration history of the window box.
7 is a table showing the oxygen concentration history of the pallet truck.
8 is a graph showing the oxygen concentration history of a specific pallet truck.
9 is a table showing the number of bills and the number of alarms.
10 is an explanatory diagram of a specific example in which the installation position of the reading device is disposed below the oxygen sensor.
11 is a view showing the manufacturing process of the sintered ores.
12 is a sectional view of a conventional pallet truck and window box.

(Outline of the present invention)

Hereinafter, preferred embodiments of a system for detecting a leakage of a pallet truck according to the present invention will be described with reference to the drawings. The basic structure of the sintering machine 20 is as described above, but will be described below. A plurality of window boxes 7 are closely arranged toward the traveling direction of the pallet truck 6 (the direction indicated by the arrow in Fig. 1). In the embodiment shown in Fig. 1, the length of the window box 7 is longer than the length of the pallet truck 6 in the traveling direction. An oxygen sensor (15) for measuring the oxygen concentration in the window box (7) is disposed in the window box (7). The oxygen sensor 15 used in the present embodiment is a laser oxygen sensor comprising a light emitting portion 15a for emitting laser light and a light receiving portion 15b for receiving the laser. 2, the light emitting portion 15a and the light receiving portion 15b are respectively provided on the wall surface of one window box 7 facing in the direction orthogonal to the traveling direction of the pallet truck 6. As shown in Fig. It is preferable that the light emitting portion 15a and the light receiving portion 15b are disposed at an intermediate position in the longitudinal direction of the window box 7 in order to accurately measure the oxygen concentration in the window box 7. [

In the present embodiment, a display member 60 for displaying a two-dimensional code is attached to one side (including the side wall 6b) opposite to the direction perpendicular to the traveling direction of each pallet truck 6. [ The two-dimensional code is a pattern in which binary code data is cel- lelled and arranged in a pattern on a two-dimensional matrix. In the present embodiment, the "identification information" of each pallet truck 6 is patterned and described. In the present embodiment, the " identification information " is a pallet number of the pallet truck 6. [ In the present embodiment, the two-dimensional code is a QR code (registered trademark) described in Japanese Patent No. 2938338. As described above, since the QR code having the supplementary code (error correction code and error detection code) is used as the two-dimensional code, the two-dimensional code is displayed by the dust or the like It is possible to read the above " identification information " even if the surface of the display member 60 that is damaged is damaged. In the present embodiment, the display member 60 for displaying a two-dimensional code has a structure in which the above-described pattern is written on a base material of a heat-resistant resin sheet such as polyimide with ceramics ink and has heat resistance. The side surface of the pallet truck 6 is heated up to a maximum of 200 DEG C. However, since the heat resistant temperature of the display member 60 displaying the two-dimensional code of the present embodiment is about 300 DEG C, the display member 60 will not be damaged. The substrate may be made of silicon or ceramics. In addition, since ceramics ink is used in the present embodiment, the pattern is not discolored by heat.

As shown in FIG. 2, a reading device 50 is disposed above the oxygen sensor 15. The reading device 50 is disposed at a position facing a locus of the display member 60 that displays a moving two-dimensional code. The separation distance between the reading device 50 and the display member 60 displaying the two-dimensional code is about 1 m. The reading device 50 is a device for reading the " identification information " of each pallet truck 6 described in each two-dimensional code. The configuration of the reading device 50 will be described later in detail. Identification information " of each pallet truck 6 read by each reading device 50 is transmitted to the processing section 30 so as to correspond to the " oxygen concentration value " in the window box 7 measured by the oxygen sensor 15 And is stored in the non-volatile memory device 34 (shown in FIG. 3) of the processing section 30. It is possible to monitor consumption of the air seal bar 10 and the end surface liner 6c of each pallet truck 6 by confirming the history of the "oxygen concentration value" associated with each pallet truck 6 . Hereinafter, a concrete configuration for realizing the leakage detection system of the pallet truck of the present embodiment will be described.

(Block diagram of processing section)

A block diagram of the processing section 30 will be described with reference to FIG. The processing section 30 has a CPU 31, a RAM 32, a ROM 33, a nonvolatile storage device 34, an interface 35, a communication interface 36 and a display section drive circuit 37. These components are connected to each other by a bus 39. [ The display section drive circuit 37 is connected to a display section 42 composed of an LCD or the like. The light emitting portion 15a and the light receiving portion 15b of the oxygen sensor 15 and the input device 41 are connected to the interface 35. [ The reading device 50 is connected to the communication interface 36.

The CPU 31 cooperates with the RAM 32 and the ROM 33 to perform various calculations and processes. The RAM 32 temporarily stores the program processed by the CPU 31 or the data processed by the CPU 31 in its address space. In the ROM 33, various programs and parameters for controlling the processing section 30 are stored. And various programs are processed by the CPU 31 to realize various functions. The ROM 33 stores a correlation oxygen concentration linkage program 33a, an information display program 33b, an alarm notification program 33c and a lane keeping maintenance priority determination program 33d. The nonvolatile memory 34 may store these programs and data.

When receiving the " identification information " of the pallet truck 6 from the communication interface 36, the computer 33a associates the " identification information "Quot; oxygen concentration value " in correspondence with each other and sequentially stored in the oxygen concentration history memory area 34c. The CPU 31 that processes the program 33a for linkage oxygen concentration and the program 33a for linkage oxygen concentration function as the linkage oxygen concentration linkage means.

The information display program 33b refers to the oxygen concentration history storage area 34a, the identification information storage area 34b and the oxygen concentration history storage area 34c to display the information stored in these storage areas on the display unit 42 . The CPU 31 for processing the information display program 33b, the information display program 33b, and the display unit 42 function as display means.

The alert notification program 33c is a program for notifying the transit number of the pallet truck 6 when there is a pallet truck 6 having an oxygen concentration of a predetermined value or more by referring to the truck oxygen concentration history storage area 34c. The CPU 31 that processes the alarm notification program 33c and the alarm notification program 33c functions as alarm notification means.

The repair priority order determining program 33d of the bogie is arranged to arrange the bogie numbers of the pallet bogies 6 in the order of the number of times of alarm by referring to the alarm times storage area 34d so that the pallet bogie 6 And is a program for determining priority. The CPU 31 that processes the bike maintenance priority determination program 33d and the bike maintenance priority determination program 33d functions as a bike maintenance priority determination unit.

The traffic oxygen concentration linkage program 33a, the information display program 33b, the alert notification program 33c and the lane's maintenance priority determination program 33d may be configured as an ASIC (Application Specific Integrated Circuit).

The nonvolatile memory device 34 is, for example, a nonvolatile memory or a hard disk. The nonvolatile memory device 34 has an oxygen concentration history storage area 34a, an identification information storage area 34b, a counter oxygen concentration history storage area 34c, and an alarm count storage area 34d. The ROM 33 may be used as the storage area. The nonvolatile memory 34 functions as a storage unit.

The interface 35 converts the physical and logical formats of the signals. The signal of the " oxygen concentration value " output from the light receiving portion 15b of the oxygen sensor 15 is output to the bus 39 through the interface 35. [ The input device 41 is for changing the setting of the processing section 30 or operating the processing section 30 and includes a pointing device such as a keyboard and a mouse and a touch panel.

The communication interface 36 is a wired or wireless interface for communicating with the reading device 50. When the communication interface 36 is a wired interface, it includes LAN, USB, IEEE1394, RS232, and RS422. When the communication interface 36 is a wireless interface, it includes an interface such as a so-called wireless LAN, Bluetooth (registered trademark), and other infrared rays defined in IEEE802.

The display unit drive circuit 37 has a GPU (Graphics Processing Unit) and a VRAM. The GPU generates image data to be displayed on the display unit 42 in response to a drawing command from the information display program 33b, the alarm notification program 33c, or the truck's maintenance priority determination program 33d, . The image data stored in the VRAM is outputted to the display section 42 as an image signal and displayed.

(Block Diagram of Reading Apparatus)

A block diagram of the reading device 50 will be described with reference to FIG. The reading device 50 has a CPU 51, a RAM 52, a ROM 53, an imaging section interface 54, and a communication interface 56. [ These components are connected to each other by a bus 59. [ The image pickup section 55 is connected to the image pickup section interface 54.

The CPU 51 cooperates with the RAM 52 and the ROM 53 to perform various calculations and processes. The RAM 52 temporarily stores the program processed by the CPU 51 or the data processed by the CPU 51 in its address space. Various programs and parameters for controlling the reading device 50 are stored in the ROM 53. [ Various programs are processed by the CPU 51 to realize various functions. The ROM 53 stores an imaging program 53a and an identification information recognizing program 53b.

The imaging program 53a is a program for outputting a command to be imaged by the imaging section 55 to the imaging section interface 54 at a predetermined interval (several hundred milliseconds to several seconds).

The identification information recognizing program 53b interprets the "captured image data" generated by the imaging unit 55 to determine whether or not the two-dimensional code displayed on the display member 60 is included in the "captured image data" Dimensional code, and reads (or in other words, recognizes) the "identification information" of the pallet truck 6 from the two-dimensional code when judging that the "captured image data" contains the two-dimensional code. The identification information recognition program may be stored in the processing section 30 side and the processing section 30 side may be configured to read the "identification information" of the pallet truck 6.

The imaging section 55 has an image sensor, an imaging optical system, and an image generating circuit. The image sensor has two-dimensionally arranged photodiodes such as CCD or CMOS. Each photodiode converts the intensity of the incident light into electric charge, and outputs the electric charge as " signal voltage ". The imaging optical system is composed of a single lens or a plurality of lenses, and images the incident light image on an image sensor. The focal point of the imaging optical system is made to coincide on the display member 60 for displaying the two-dimensional code. The image generation circuit has an A / D converter and a digital signal processor (DSP). The A / D converter converts the "signal voltage" output by the image sensor into a "digital signal". The DSP generates "captured image data" which is two-dimensional pixel data from the "digital signal" generated by the A / D converter.

The image pickup section interface 54 converts the physical and logical format of the signal of the " picked-up image data "

The communication interface 56 is an interface corresponding to the communication interface 36 of the processing unit 30. Identification information "of the pallet truck 6 is transmitted from the communication interface 56 to the communication interface 36 of the processing section 30 when the identification information recognition program 53b reads the" identification information "

(Description of main processing)

The main processing of the processing section 30 will be described below. When power is supplied to the processing section 30, the process goes to step S10 and the subsequent steps.

The oxygen concentration value inputted to the interface 35 at a predetermined time from the oxygen sensor 15 in the processing of S10 " start of oxygen concentration history storage " is changed to the " measurement time " In the oxygen concentration history storage area 34a. When the process of S10 is completed, the process proceeds to the judgment process of S11.

S11 In the determination process of "reception of identification information?", The connection oxygen concentration linkage program 33a determines whether or not "identification information" of the pallet truck 6 has been received. When it is determined that the bogie oxygen concentration linkage program 33a has received the " identification information " of the pallet truck 6, the process proceeds to S12.

In the process of S12 " Identification information storage ", the program 33a associates the "identification information" (banner number) with the "reading time" at which the "identification information" ). When the process of S12 ends, the process proceeds to S13.

In the processing of S13 "linkage oxygen concentration linkage", the linkage oxygen concentration linkage program 33a refers to the oxygen concentration history storage area 34a and the identification information storage area 34b to determine the "read time" The length of the pallet truck 6 in the moving direction and the speed of the pallet truck 6 to calculate the passing start time and the passing end time on the oxygen sensor 15 of the pallet truck 6. [ Then, the computerized oxygen concentration program 33a averages the " oxygen concentration value " stored in the oxygen concentration storage area 34a between the calculated passage start time and passage end time. Then, the bogie oxygen concentration linkage program 33a associates the averaged "oxygen concentration value" with the "identification information" and stores it in the boggy oxygen concentration history storage area 34c. The passage start time is a time when the front end of the pallet truck 6 is on the oxygen sensor 15 and the passage end time is a time when the rear end of the pallet truck 6 is on the oxygen sensor 15. [ In this manner, the pallet truck 6 passing through the oxygen sensor 15 and the oxygen concentration value in the window box 7 when the pallet truck 6 passes through the oxygen sensor 15 correspond to each other. The oxygen concentration of the window box 7 at this time is related to the degree of damage of the air seal bar 10 and the end surface liner 6c of the pallet truck 6 passing through the oxygen sensor 15. [ (Hereinafter simply referred to as " pallet truck 6 ") corresponding to the identification information of the pallet truck 6 with respect to each pallet truck 6 passing through the oxygen sensor 15, Quot; oxygen concentration value " of the oxygen concentration history memory area 34c) is stored in the oxygen concentration history memory area 34c. When the process of S13 ends, the process proceeds to S14.

The information display program 33b refers to the oxygen concentration history storage area 34a and the identification information storage area 34b in the process of S14 " information update display " The history and the history are superimposed to create a graph (shown in Fig. 6) showing the bogie number of the pallet truck 6 that has passed through the oxygen sensor 15, and the graph is displayed on the display unit 42.

The information display program 33b creates a table (shown in Fig. 7) showing the history of the " oxygen concentration value " of each pallet truck 6 by referring to the oxygen concentration history storage area 34c, The table is displayed on the display unit 42.

The operator can confirm the degree of damage of the air seal bar 10 and the end surface liner 6c of each pallet truck 6 by checking the graph of FIG. 6 and the table of FIG. That is, when the oxygen concentration in the window box 7 is high when the pallet truck 6 passes over the oxygen sensor 15, the amount of the airflow of the pallet truck 6 is large, It can be considered that the damage to the surface liner 6c is proceeding. For example, as shown in FIG. 7, the progress of the damage can be easily grasped by changing the display form of the oxygen concentration value equal to or greater than the predetermined value (threshold value) to other oxygen concentration values.

The information display program 33b creates a graph (shown in Fig. 8) showing the history of the " oxygen concentration value " of a specific pallet truck 6 by referring to the oxygen concentration history storage area 34c, And displays the graph on the display unit 42. By confirming the graph shown in Fig. 8, the operator can predict an appropriate time to repair the pallet truck 6 in advance. That is, when the oxygen concentration of a specific pallet truck 6 starts to rise, it can be considered that the air seal bar 10 and the end surface liner 6c are damaged, and the damage starts to progress. Further, by confirming the graph shown in Fig. 8, the operator can know the deterioration period of the pallet truck 6 and can help the maintenance plan of the pallet truck 6. Fig.

When the process of S14 ends, the process proceeds to the determination process of S15.

In the process of determining whether or not the oxygen concentration is greater than or equal to the predetermined value S15, the alarm notification program 33c refers to the oxygen concentration history storage area 34c to determine whether or not the " oxygen concentration value " 7.1% or more) of the pallet truck 6 is present. When the alarm notification program 33c judges that there is a pallet truck 6 having an oxygen concentration value equal to or greater than a predetermined value, it proceeds to the processing of S16. On the other hand, when the alarm notification program 33c determines that there is no pallet truck 6 having the oxygen concentration value equal to or larger than the predetermined value, the process proceeds to the determination processing in S17.

In the process of S16 " alarm notification ", the alarm notification program 33c identifies the pallet number of the pallet truck 6 whose "oxygen concentration value" is equal to or larger than a predetermined value and notifies the pallet number as an alarm number And stored in the storage area 34d. In other words, the alarm notification program 33c stores, for each pallet truck 6, the number of times the alarm has been notified, that is, the number of times the "oxygen concentration value" has become equal to or larger than the predetermined value in the alarm count storage area 34d. In addition, as a method of notifying the bills number as an alarm, the bills number may be displayed by the display unit 42, or may be a method by voice. When the operator monitors the "oxygen concentration value" of the window box 7 in the remote management room from the processing unit 30, the alarm notification program 33c sets the pallet truck 6 having the "oxygen concentration value" ) To the management room through the communication interface 36 to notify the bills number. When the process of S16 ends, the process proceeds to the determination process of S17.

In the judgment processing of S17 " input of the maintenance priority order of the truck? &Quot;, the truck's maintenance priority determination program 33d judges whether or not the maintenance priority order of the truck has been inputted to the bus 39. [ In addition, the repair priority order determination instruction of the bogie is inputted to the bus 39 by the operator operating the input device 41. [ If the bare-note maintenance priority determination program 33d determines that the bare-maintenance priority determination command has been input to the bus 39, the process proceeds to S18. On the other hand, when it is judged that the maintenance priority order of the bogie has not been inputted to the bus 39, the process returns to the judgment processing of S11.

The maintenance priority determination program 33d of the bogie maintenance priority determination program 33d refers to the number of times of alarm storage 34d so that the number of bills of the pallet bogies 6 in ascending order of the number of alarms And displays a table (shown in Fig. 9) showing the number of bills and the number of times of alarms, and displays them on the display unit 42. Fig. Here, the lane's maintenance priority determination program 33d determines that a predetermined number of higher-order pallet bogies having a larger number of alarms are pallet bogs to be repaired preferentially. The table to be displayed on the display unit 42 has a configuration in which the worker can recognize the pallet number of the pallet truck to be repaired first. For example, as shown in Fig. 9, it is possible to apply a configuration in which the background color of the parcel number of the pallet truck determined to have priority to be repaired is made different from the background color of the pallet truck which is not. By confirming the table shown in Fig. 9, the worker can recognize the order of the pallet truck 6, which is preferentially repaired. The number of the pallet trucks 6 that can be repaired at regular repair at one time is limited by the constraints such as the maintenance time and the place where the pallet truck 6 is placed, so that it is meaningful that the operator can recognize the above ranking. When the process of S18 ends, the process returns to the determination process of S11.

(General)

In the present embodiment, the information on the pallet truck 6 can be accurately grasped from the information shown in Fig. 6 to Fig. 9 accurately and accurately so that the pallet truck 6 can be efficiently repaired. This makes it unnecessary to increase the maintenance cost of the pallet truck 6, and it is possible to prevent unnecessary power consumption due to the airflow of the pallet truck 6.

5, the " oxygen concentration value " associated with the pallet truck 6 is stored in the oxygen concentration history storage area 34c, but it may be stored in the ROM 33 as well.

10, the reading device 50 is disposed above the oxygen sensor 15. However, as shown in Fig. 10, the reading device 50 is disposed below the oxygen sensor 15, that is, below the orbiting track of the pallet truck 6 The reading apparatus 50 may be disposed in the apparatus. In this case, the passage start time and the passage end time on the oxygen sensor 15 of the pallet truck 6 are calculated by inverse calculation from the time at which the " identification information " is read and the velocity of the pallet truck 6, And " oxygen concentration value " In this embodiment, the reading device 50 is not exposed to a high temperature, so that breakage of the reading device 50 is prevented.

Further, by using a portable reading device having a display portion, the operator can read the two-dimensional code of the display member 60 attached to each pallet truck 6 to the reading device, And displays a screen for inputting the damaged area information of each pallet truck 6. [ It is possible to electronically data the repair history of the pallet truck 6 by transmitting the electronic data of the damaged area information to the display screen and transmitting the information to the processing unit 30. [ Further, the operator can confirm the maintenance history (past damaged area information) and the history of the oxygen concentration of each pallet truck 6, grasp the points where the pallet trucks are likely to be damaged, and perform repair and strengthening of the damaged areas It is also possible to increase the longevity of the pallet truck.

While the present invention has been described with reference to the embodiment that is deemed to be the most practical and preferred at present, the present invention is not limited to the embodiments disclosed in the present specification, but may be embodied in the gist of the invention which can be read from the claims and the entire specification Or to the extent not inconvenient, and that the system for detecting the leakage of pallet trucks accompanied by such changes should also be understood as being included in the technical scope.

According to the present invention, since the identification information is read from the display device indicating the two-dimensional code attached to the side surface of each pallet truck to the reading device and the read identification information is displayed in association with the oxygen concentration value in the window box , It is made possible to detect the pallet bog which is generating the leakage due to the damage of the pallet bogie. Thereby, priority can be given to the pallet trucks requiring maintenance, and efficient pallet truck replacement becomes possible. In addition, it becomes possible to grasp the history of the oxygen concentration value of each pallet truck, and it is possible to determine the deterioration cycle of each pallet truck and prevent the increase of the windpower in advance. As a result, the increase of the air leakage is suppressed, and the power consumption for driving the intake apparatus can be reduced.

In addition, in the case of replacing approximately one-half of the pallet trucks of 160 trucks, the power consumption for driving the intake system can be reduced by about 5%.

1: raw material tank
2: Mixer
3: Surge hopper
4: Drum feeder
5: With ignition
6: pallet truck
6a:
6b: Sidewall
6c: End face liner
6d: Inner side of end face liner
7: Window box
8: Window leg
9: Main duct
10: Air seal bar
11: Intake device
15: Oxygen sensor
15a:
15b:
20: Sintering machine
30:
31: CPU
32: RAM
33: ROM
33a: Batch oxygen concentration linkage program
33b: Information display program
33c: Alarm notification program
33d: The maintenance priority determination program of the bogie
34: Nonvolatile memory
34a: oxygen concentration history storage area
34b: identification information storage area
34c: Buffer oxygen concentration history storage area
34d: number of alarm times storage area
35: Interface
36: Communication interface
37: Display section drive circuit
41: input device
42:
50:
51: CPU
52: RAM
53: ROM
53a:
53b: Identification information recognition program
54: Imaging unit interface
55:
56: Communication interface
60: display member
99: raw material layer

Claims (6)

A plurality of pallet trucks connected continuously in the moving direction of the main track and formed with a ventilating portion on the bottom surface and loaded with the raw material of the sintered ores,
A plurality of window boxes disposed below the main track,
And a suction device for sucking the inside of the window box and allowing the air to flow downward from above the pallet carriage,
An oxygen sensor for measuring an oxygen concentration in the window box,
A display member that is attached to a side surface of the pallet truck and displays a two-dimensional code written by patterning the identification information of the pallet truck;
A reading device for reading the identification information described in the display member;
A storage unit for storing the oxygen concentration value in the window box measured by the oxygen sensor and the identification information of the pallet truck read by the reading device;
And display means for displaying the identification information stored in the storage unit in association with the oxygen concentration value,
Wherein the storage unit further stores a measurement time of the oxygen concentration value by the oxygen sensor and a readout time of the identification information of the pallet truck by the reading device,
From the readout time stored in the storage unit, a passage start time and a passage end time on the oxygen sensor of the pallet truck, and the oxygen concentration value stored in the storage unit between the passage start time and the passage end time Further comprising: a counter oxygen concentration correlating means for correlating the identification information of the pallet truck with the identification information of the pallet truck,
Wherein said display means displays a history of said oxygen concentration values of said pallet trucks associated therewith. delete The pallet truck according to claim 1, further comprising alarm notification means for notifying the alarm by specifying the pallet truck when the oxygen concentration value associated with the pallet truck is equal to or greater than a predetermined threshold value . The pallet truck according to claim 1, wherein the identification information of the pallet truck is arranged in the order of the number of times the oxygen concentration value associated with the pallet truck stored in the storage unit is equal to or greater than a predetermined value, Further comprising means for determining a pallet bogie as a pallet bogie to be preferentially repaired by said bogie bogie of said pallet bogie. The system of any one of claims 1, 3, and 4, wherein the two-dimensional code displayed on the display member has a supplemental code. A plurality of pallet trucks connected continuously in the moving direction of the main track and formed with a ventilating portion on the bottom surface and loaded with the raw material of the sintered ores,
A plurality of window boxes disposed below the main track,
And a suction device for sucking air in the window box and flowing the air downward from above the pallet truck, comprising the steps of:
Measuring oxygen concentration in the window box with an oxygen sensor;
Reading identification information of the pallet truck described in a two-dimensional code displayed on a display member attached to a side surface of the pallet truck with a reading device;
Storing the oxygen concentration value in the window box measured in the measuring step and the identification information of the pallet truck read in the reading step in a storage unit;
Displaying the measured oxygen concentration value in the window box and the read identification information of the pallet truck in correspondence with each other on the display means,
Wherein the storage unit further stores a measurement time of the oxygen concentration value by the oxygen sensor and a readout time of the identification information of the pallet truck by the reading device,
From the readout time stored in the storage unit, a passage start time and a passage end time on the oxygen sensor of the pallet truck, and the oxygen concentration value stored in the storage unit between the passage start time and the passage end time Further comprising: a counter oxygen concentration correlating means for correlating the identification information of the pallet truck with the identification information of the pallet truck,
Wherein the display means displays a history of the oxygen concentration values of the pallet trucks associated with each other.

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