Coking tamping hammer state monitoring device

Abstract

The utility model discloses a coking tamping hammer state monitoring device which comprises a cantilever located right above a tamping hammer, the rear end of the cantilever is installed on a gantry crane track, a transverse adjusting sliding block is installed at the rear end of the cantilever, the lower end of the transverse adjusting sliding block is located in the gantry crane track and detachably installed on the gantry crane track through a bolt, and the lower end of the transverse adjusting sliding block is connected with the cantilever. Two fixing plates are installed on the transverse adjusting sliding block, the rear end of the cantilever is further sleeved with a telescopic adjusting sliding block and fixed through a bolt, and a monitoring probe is detachably installed at the front end of the cantilever through a plurality of universal adjusting screws. The non-contact laser ranging technology is adopted, and data can be summarized in real time and transmitted to a computer. And the state of the hammer rod can be accurately monitored even in the hammer rod and a narrow space thereof. The system can detect the coal cake processing state in real time, provide fault information, help maintenance personnel to quickly position problems and improve the maintenance efficiency, so that the reliability and the production efficiency of the production process are enhanced.

Description

Technical Field

[0001] The utility model relates to the technical field, in particular to a coking tamping hammer state monitoring device. Background Art

[0002] At present, the operation of the tamping machine is completely dependent on manual control, and the operator can only judge its working status and potential failures by visual observation. Since the coal cakes are placed in a narrow and deep tamping bin, it is difficult for the operator to accurately judge the height and density of each area of ​​the finished surface, and therefore it is difficult to adjust the loading amount of the shaking feeder and the tamping time of the tamping hammer in time. This reliance on manual control makes it impossible to achieve automatic tamping control, which seriously affects production efficiency.

[0003] In addition, some faults have no obvious signs before they occur, resulting in frequent faults such as tamping hammer burying, bending, friction plate wear, and guide wheel damage during the tamping process, which seriously undermines the continuity of production. The entire production process is highly dependent on manual operation, and the technical level and sense of responsibility of the operators are extremely strict. This results in poor stability of production parameters such as the density and weight of coal cakes, and low production efficiency. In summary, the introduction of an online monitoring device for the tamping hammer is an effective means to solve the current operation problems of the tamping machine. The tamping machine has a very compact structure, limited space, large vibrations during operation, and diffuse dust. Therefore, the installation of electronic sensors, circuits, instruments, etc. on the tamping machine cannot operate reliably for a long time, and its life is very short. Utility Model Content

[0004] The utility model aims to provide a coking tamping hammer state monitoring device to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a coking tamping hammer status monitoring device, comprising a cantilever located directly above the tamping hammer, the rear end of the cantilever is installed on the overhead crane track, the rear end of the cantilever is installed with a lateral adjustment slider, the lower end of the lateral adjustment slider is located in the overhead crane track and is detachably installed on the overhead crane track by bolts, two fixed plates are respectively installed on the lateral adjustment slider, the two fixed plates are located on the left and right sides of the cantilever, the rear end of the cantilever is also sleeved with a telescopic adjustment slider and fixed by bolts, the telescopic adjustment slider is located on the inner sides of the two fixed plates, the fixed plate, the telescopic adjustment slider and the cantilever are all provided with through holes in corresponding positions, a folding rotating shaft is installed through the through hole, and a monitoring probe is detachably installed at the front end of the cantilever through a number of universal adjustment screws.

[0006] Preferably, the monitoring probe includes a core main control circuit board, and the core main control circuit board is respectively connected to the laser scanning rangefinder, the communication circuit and the power supply circuit.

[0007] Preferably, a reflective plate cooperating with a laser scanning rangefinder is installed on the upper surface of the tamping hammer.

[0008] Preferably, there are three universal adjustment screws arranged in a triangle.

[0009] The utility model proposes a coking tamping hammer state monitoring device, which has the beneficial effect that: the application adopts non-contact laser ranging technology, which can summarize data in real time and transmit it to the computer through wireless LORA. Even in the hammer rod and its narrow space, the state of the hammer rod can be accurately monitored. The components and circuits are installed on the wall or hanging bracket next to it, which effectively avoids the influence of strong vibration on the sensor and electrical circuit, and prolongs the service life. At the same time, the independence of this equipment ensures that the normal operation of the original equipment is not disturbed. It is easy to install, does not need to destroy the original equipment, and is easy to maintain. Even if the monitoring system fails or is shut down, the original equipment can continue to work, ensuring the continuity of production. The system can detect the coal cake processing status in real time, provide fault information, help maintenance personnel quickly locate problems, improve maintenance efficiency, thereby enhancing the reliability and production efficiency of the production process. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 This is a schematic diagram of the installation of the utility model;

[0011] Figure 2 It is a schematic diagram of the front structure of the utility model;

[0012] Figure 3 It is a schematic diagram of the rear structure of the utility model;

[0013] Figure 4 This is a schematic diagram of the internal structure of the monitoring probe of the utility model.

[0014] In the figure: 1. Tamping hammer, 2. Cantilever, 3. Crane track, 4. Lateral adjustment slider, 5. Fixed plate, 6. Telescopic adjustment slider, 7. Folding rotation axis, 8. Universal adjustment screw, 9. Monitoring probe. DETAILED DESCRIPTION

[0015] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0016] See also Figure 1-4The utility model provides a technical solution: a coking tamping hammer state monitoring device, comprising a cantilever 2 located just above the tamping hammer 1, the rear end of the cantilever 2 is installed on the overhead crane track 3, the rear end of the cantilever 2 is installed with a lateral adjustment slider 4, the lower end of the lateral adjustment slider 4 is located in the overhead crane track 3 and is detachably installed on the overhead crane track 3 by bolts, so as to realize left and right sliding adjustment, two fixed plates 5 are respectively installed on the lateral adjustment slider 4, the two fixed plates 5 are located on the left and right sides of the cantilever 2, the rear end of the cantilever 2 is also sleeved with a telescopic adjustment slider 6 and fixed by bolts, the telescopic adjustment slider 6 is located on the inner sides of the two fixed plates 5, the fixed plate 5, the telescopic adjustment slider 6 and the cantilever 2 are all provided with through holes corresponding to the positions, the through holes are penetrated and installed with a folding rotating shaft 7, and the front end of the cantilever 2 is detachably installed with a monitoring probe 9 by a number of universal adjustment screws 8.

[0017] The monitoring probe 9 includes a core main control circuit board, which is respectively connected to the laser scanning rangefinder, the communication circuit and the power supply circuit. The laser scanning rangefinder transmits the distance data measured by it to the core main control circuit board, and receives control signals from the core main control circuit board, such as start, stop, etc. The communication circuit is used to realize the communication between the device and the external device or network. The core main control circuit board sends and receives data through the communication circuit to realize functions such as remote control, data upload and download, etc.

[0018] A reflector matched with a laser scanning rangefinder is installed on the upper surface of the tamping hammer 1 .

[0019] The three universal adjustment screws 8 are arranged in a triangle, which can first ensure that the device has stable support in different directions, enhance the stability of the device and ensure uniform force; and each universal adjustment screw can be adjusted independently, and by fine-tuning the position of each screw, the position, angle or tension of the device can be precisely controlled. At the same time, since each adjustment screw can be operated independently, it can be more flexible to meet different installation and maintenance requirements.

[0020] The detailed connection means are well-known in the art. The following mainly introduces the working principle and process. The specific work is as follows.

[0021] Before coking, the side-loading coke oven needs to put the coal powder in the tamping bin, compact it into a large coal cake with a tamping hammer, and then push it into the coking oven for refining. Most of the existing tamping machines have 24-32 tamping hammers. Figure 1In the installation position shown, the cantilever 2 is installed and fixed to the appropriate position of the overhead crane track 3 by sliding the lateral adjustment slider 4. The front and rear positions of the cantilever 2 can be adjusted by disassembling and assembling the telescopic adjustment slider 6, thereby adjusting the horizontal front, rear, left and right positions of the monitoring probe 9. The cantilever 2 can also be manually folded upward by folding the rotating shaft 7, so that the left and right movement of the overhead crane will not be hindered when the tamping machine is repaired. The angle of the laser light path inside the monitoring probe 9 can be adjusted by the universal adjustment screw 8 to ensure that the light path and the running direction of the tamping hammer are consistent. When the tamping machine is working, the tamping hammer jumps up and down driven by the driving cam, with a reciprocating stroke of about 40-50cm (the stroke of various types of tamping machines is different), and the coal powder continuously added to the coal cake bin is compacted into coal cakes.

[0022] When the tamping hammer reciprocates up and down, the laser scanning rangefinder emits a ranging scanning laser beam to the hammer head at a frequency of more than 20 Hz. Because the reflector is installed on the upper end of the tamping hammer, the real-time height and reciprocating stroke of the tamping hammer are collected and recorded. After all the data on the tamping hammer are collected and summarized, they are sent to the computer through the wireless LORA method of the communication circuit. The computer host software calculates the real-time coal cake height in the coal cake bin according to the height of the coal cake bin, the height of the tamping hammer, and the ranging height, and derives, calculates, displays, and records various parameters and fault conditions. The data is stored in the computer database for long-term statistics and historical inquiries.

[0023] The device of the present application calculates the working state of the tamping machine by the distance detected by the laser scanning rangefinder and the deviation of the tamping hammer from the beam channel. The specific principle is as follows:

[0024] 1. Detection of coal cake tamping height and height curve. It is known that the distance A measured by the laser rangefinder when the hammer head falls to the bottom of the silo, the minimum distance B measured by the laser head during the current coal cake tamping, and the current height of the coal cake X = AB. The coal cake height X measured by all tamping hammers (24-32) is connected into a continuous curve, which is the real-time height curve of the coal cake being compacted in the entire coal cake silo. The highest point of the curve indicates that the shaking feeder at this position is filled with the most coal powder (assuming that all tamping hammers are working normally), and the lowest point of the curve indicates that the feeder at this position is too little filled, or there is a blockage in the feeding of the shaking feeder. According to the ups and downs of the curve, the start-stop ratio of the feeder in each area can be accurately adjusted, and finally the filling speed and tamping density of each area in the coal silo are equal.

[0025] 2. Abnormal judgment of the friction plate of the buried hammer, tamping hammer and motor-driven cam. Each time the tamping hammer reciprocates up and down, it jumps about once per second. Each time it jumps, the coal powder in the coal bunker below is compacted. Each time it jumps, the laser rangefinder will detect more than 20 distance data. The maximum data minus the minimum data is the maximum stroke of this tamping hammer jump. When the friction plate on the tamping hammer and the friction plate on the motor-driven cam are in good condition, the up and down compaction stroke of the tamping hammer is consistent every time, and it is the inherent maximum stroke of the system (for example, the maximum stroke is 450mm). If the friction plate on a certain vertical rod or cam is aged and worn, the up and down reciprocating distance of the tamping hammer will gradually be less than the maximum value, and the proportion of unsatisfied stroke will gradually increase. The monitor will count the proportion A of the tamping hammer stroke less than the full stroke and the proportion B of abnormal conditions, and obtain the comprehensive wear reference value C. When C is greater than a certain value, the monitor will give an early warning and report the poor condition of the tamping hammer. When the friction plate is consumed to a certain extent, the monitor will issue a maintenance and replacement alarm signal. If the tamping hammer is ignored, it may occasionally fail to lift during the entire stroke. At this time, the tamping hammer will be buried in the coal powder that is continuously added. If the tamping machine is not stopped in time when this fault occurs, the tamping hammer will be difficult to clean out, causing a production stagnation accident.

[0026] 3. Monitoring of guide wheel or guide slider damage and tamping hammer bending faults. When the tamping machine is working normally, the tamping hammer will be guided up and down by several upper and lower guide wheels or guide sliders in the tamping hammer bracket. The swing range of the tamping hammer in the four directions of the plane will not exceed 40mm, which is exactly the scanning range of the ranging laser. If the tamping hammer is bent, or the guide wheel or slider is severely worn, the front, back, left and right swing range of the tamping hammer will exceed this range, and the rangefinder laser will not be able to irradiate the top of the tamping hammer, so it is impossible to test the effective distance data, and the statistical value of the invalid signal A will be increased by 1. When the invalid signals gradually increase, the value of A exceeds the warning setting value, and the monitoring device will send a warning signal to remind the staff to pay attention to the inspection. When the value of A exceeds the alarm value, the monitoring device will send an alarm signal. This system will remind the maintenance personnel that the equipment has reached the fault range and should be checked and repaired in time.

[0027] This application uses a non-contact laser ranging method to monitor the status of the hammer rod through the hammer rod and its narrow space. All components and circuits are not installed on the tamping machine equipment, but on the wall or overhead bracket next to it, avoiding the strong vibration from affecting the service life of the sensor and electrical circuits. At the same time, the independence of the system is guaranteed, and the normal operation of the original equipment is not affected. The non-destructive installation and construction are simple and maintenance is convenient. Even if the monitoring system is damaged or shut down, it will not affect the continued operation of the original equipment, thereby improving reliability and production efficiency. This monitoring device provides improvements in many aspects for tamping machine production:

[0028] 1. Production process assistance. This monitoring device can monitor the real-time height curves of different areas of the briquette during the briquette processing, so as to determine the amount of feeding in each area. The operator can adjust the feeding speed of each feeder in real time according to the height of the curve to ensure the tamping uniformity of each area of ​​the briquette and the consistency of briquette production, and provide the operator with a real-time and accurate basis for the start-stop ratio control of the feeder, so as to realize an unmanned intelligent automatic control system for the tamping machine.

[0029] 2. Equipment operation and maintenance fault monitoring. This device monitors the most important faults of the tamping machine, such as buried hammer, friction plate wear, guide wheel wear, and hammer rod bending. It can provide early warning signals at the early stage of the fault, and will send out alarm signals when the fault is serious. The real-time online monitoring method reduces the requirements for the number of production assistants, reduces the probability of system failure, prevents abnormal shutdowns, improves production efficiency, and extends the service life of equipment.

[0030] 3. Digital factory transformation. The production data and equipment health status monitoring process of this monitoring device are all stored in the storage area database, which is conducive to query and statistical analysis at any time in the future, providing necessary data support for digital improvement of production processes, and is an important part of completing the construction of a digital factory.

[0031] In summary, this system that monitors and records the working status of the tamping machine through a laser scanning rangefinder has the advantages of high accuracy, strong real-time performance, fault warning, adjustability and easy maintenance.

[0032] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A coking tamping hammer state monitoring device, comprising a cantilever (2) located directly above the tamping hammer (1), the rear end of the cantilever (2) being mounted on a crane track (3), characterized in that: A transverse adjustment slider (4) is installed at the rear end of the cantilever (2), the lower end of the transverse adjustment slider (4) is located in the overhead crane track (3) and is detachably installed on the overhead crane track (3) by bolts, two fixing plates (5) are respectively installed on the transverse adjustment slider (4), and the two fixing plates (5) are located on the left and right sides of the cantilever (2), and the rear end of the cantilever (2) is also sleeved with a telescopic adjustment slider (6) and fixed by bolts, and the telescopic adjustment slider (6) is located on the inner side of the two fixing plates (5), and the fixing plate (5), the telescopic adjustment slider (6) and the cantilever (2) are all provided with through holes corresponding to the positions, and a folding rotating shaft (7) is installed through the through hole, and a monitoring probe (9) is detachably installed at the front end of the cantilever (2) by a plurality of universal adjustment screws (8).

2. A coking tamping hammer state monitoring device according to claim 1, characterized in that: The monitoring probe (9) comprises a core main control circuit board, and the core main control circuit board is respectively connected to a laser scanning rangefinder, a communication circuit and a power supply circuit.

3. A coking tamping hammer state monitoring device according to claim 1, characterized in that: A reflector matched with a laser scanning rangefinder is installed on the upper surface of the tamping hammer (1).

4. A coking tamping hammer state monitoring device according to claim 1, characterized in that: There are three universal adjustment screws (8) arranged in a triangle.

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