Sintering machine trolley wheel falling alarm device based on PLC operation

Abstract

The utility model relates to the technical field of sintering machine trolley wheels, in particular to a sintering machine trolley wheel falling alarm device based on PLC (Programmable Logic Controller) operation, which comprises trolley wheels and a proximity switch, the proximity switch is arranged above the trolley wheels, an annular proximity plate is fixed at the front end of each trolley wheel, and a support plate is arranged above each proximity switch. A PLC is fixed to the right side of the upper end of the supporting plate, an alarm fixed to the upper end of the supporting plate is arranged on the left side of the PLC, a distance sensor fixed to the upper end of the supporting plate is arranged on the left side of the alarm, and an induction height adjusting assembly is arranged below the supporting plate. According to the utility model, the work of the PLC is combined, the change trend of loosening and falling of the trolley wheels can be accurately and stably detected, and the alarm gives an alarm sound and gives an early warning signal in time, so that maintenance and replacement are arranged in time, the risk of equipment accidents is effectively reduced, the service life of the sintering trolley is prolonged, and the maintenance cost of the equipment is further reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of sintering machine trolley wheels, in particular to a sintering machine trolley wheel falling-off alarm device based on PLC calculation. Background Art

[0002] Sintering machine is suitable for sintering operation in large-scale ferrous metallurgical sintering plants. It is the main equipment in the exhaust sintering process. It can sinter concentrate powder and rich ore powder of different components and different particle sizes into blocks, and partially eliminate harmful impurities such as sulfur and phosphorus contained in the ore. Sintering machine is divided into several specifications of different lengths and widths according to the sintering area. Users can choose according to their output or site conditions. The larger the sintering area, the higher the output. Sintering machine is one of the key equipment in the sintering system, and the sintering machine trolley wheel bearing is a key part.

[0003] The wheel bearings have a certain service life cycle. From a cost perspective, it is impossible to replace them one by one. Usually, they are replaced based on the damage determined by the inspection information. The operating environment of the sintering trolleys is harsh and the number of them is large. Long-term manual inspection will inevitably lead to some omissions. When the trolley wheel deviates or even detaches from the axle, the trolley wheel will fall and get stuck or the hinge support will break, causing a major accident. Therefore, it is very important to promptly discover possible faults in the operation of the sintering trolley and detect the changing trend of the loosening and falling off of the trolley wheel. Utility Model Content

[0004] The utility model provides a sintering machine trolley wheel falling-off alarm device based on PLC calculation, which is conducive to discovering possible faults of the trolley during operation and is difficult to detect the changing trend of loosening and falling-off of the trolley wheel.

[0005] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0006] A sintering machine trolley wheel falling-off alarm device based on PLC operation, comprising a trolley wheel and a proximity switch, wherein the proximity switch is arranged above the trolley wheel;

[0007] An annular approach plate is fixed at the front end of the trolley wheel, a support plate is provided above the proximity switch, a PLC programmable controller is fixed to the right side of the upper end of the support plate, an alarm fixed to the upper end of the support plate is provided on the left side of the PLC programmable controller, and a distance sensor fixed to the upper end of the support plate is provided on the left side of the alarm;

[0008] An induction height adjustment component is provided below the support plate.

[0009] Furthermore, the sensing end of the proximity switch corresponds to the annular proximity plate in upper and lower directions.

[0010] Furthermore, the PLC programmable controller, distance sensor, alarm and proximity switch are signal-connected.

[0011] Furthermore, a mounting plate is fixed to the right end of the support plate.

[0012] Furthermore, the induction height adjustment component includes a scale plate, a threaded adjustment rod and an adjustment plate, the scale plate is fixed to the lower end of the support plate, and the threaded adjustment rod is rotatably connected to the lower end of the support plate.

[0013] Furthermore, the adjustment plate is slidably sleeved on the outer periphery of the scale plate, the threaded adjustment rod is threadedly penetrated through the adjustment plate from top to bottom, and the proximity switch is fixed to the lower end of the adjustment plate.

[0014] Beneficial effects of the utility model:

[0015] By arranging proximity switches, distance sensors, alarms and PLC programmable controllers above the two trolley wheels on the same axle, and connecting the signals among the proximity switches, distance sensors, alarms and PLC programmable controllers, once the state of the trolley wheels is abnormally deviated, combined with the work of the PLC programmable controller, it is conducive to accurately and stably detecting the changing trend of the loosening and falling off of the trolley wheels. When the alarm sounds, a warning signal is given in time, so that maintenance and replacement can be arranged in time, which effectively reduces the risk of equipment accidents, increases the service life of the sintering trolley, and thereby reduces the equipment maintenance cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the support plate structure of the utility model;

[0018] Figure 3 The utility model is a schematic diagram of the PLC programmable controller program design structure.

[0019] Description of reference numerals:

[0020] Trolley wheel 1, support plate 2, proximity switch 3, distance sensor 4, alarm 5, PLC programmable controller 6, mounting plate 7, annular proximity plate 8, scale plate 9, threaded adjustment rod 10, adjustment plate 11. DETAILED DESCRIPTION

[0021] In order to facilitate the understanding of those skilled in the art, the present invention is further described below in conjunction with embodiments and drawings. The contents mentioned in the implementation modes are not intended to limit the present invention.

[0022] like Figure 1-2As shown, in this embodiment, it includes a trolley wheel 1 and a proximity switch 3, the proximity switch 3 is arranged above the trolley wheel 1, a ring-shaped proximity plate 8 is fixed to the front end of the trolley wheel 1, a support plate 2 is arranged above the proximity switch 3, a PLC programmable controller 6 is fixed to the right side of the upper end of the support plate 2, an alarm 5 fixed to the upper end of the support plate 2 is arranged on the left side of the PLC programmable controller 6, a distance sensor 4 fixed to the upper end of the support plate 2 is arranged on the left side of the alarm 5, the PLC programmable controller 6, the distance sensor 4, the alarm 5 and the proximity switch 3 are signal-connected, the An induction height adjustment component is provided below the support plate 2, and the induction height adjustment component includes a scale plate 9, a threaded adjustment rod 10 and an adjustment plate 11. The scale plate 9 is fixed to the lower end of the support plate 2, and the threaded adjustment rod 10 is rotatably connected to the lower end of the support plate 2. The adjustment plate 11 is slidably sleeved on the outer periphery of the scale plate 9. The threaded adjustment rod 10 passes through the adjustment plate 11 from top to bottom. The proximity switch 3 is fixed to the lower end of the adjustment plate 11, and the sensing end of the proximity switch 3 corresponds to the annular proximity plate 8 up and down. A mounting plate 7 is fixed to the right end of the support plate 2.

[0023] First, after fixing the mounting plate 7 to the corresponding position of the sintering trolley by bolts, the sensing end of the proximity switch 3 now corresponds to the annular proximity plate 8 up and down, and by twisting the threaded adjustment rod 10 and driving the adjustment plate 11 to slide up and down along the scale plate 9, the adjustment plate 11 will drive the proximity switch 3 to move up and down. Combined with the scale value on the scale plate 9, it is convenient to accurately adjust the sensing distance between the proximity switch 3 and the annular proximity plate 8 until the distance between the sensing end of the proximity switch 3 and the annular proximity plate 8 is adjusted. Therefore, the proximity switch 3, the distance sensor 4, the alarm 5 and the PLC programmable controller 6 are arranged above the two trolley wheels 1 on the same axle. Since the signals between the proximity switch 3, the distance sensor 4, the alarm 5 and the PLC programmable controller 6 are connected, once the state of the trolley wheel 1 is abnormally offset, the distance of the annular proximity plate 8 sensed by the proximity switch 3 changes.

[0024] like Figure 1-3 As shown, in this embodiment, a PLC programmable controller 6 is fixed on the right side of the upper end of the support plate 2, an alarm 5 fixed to the upper end of the support plate 2 is provided on the left side of the PLC programmable controller 6, a distance sensor 4 fixed to the upper end of the support plate 2 is provided on the left side of the alarm 5, and signals are connected among the PLC programmable controller 6, the distance sensor 4, the alarm 5 and the proximity switch 3.

[0025] When the spacing of the annular proximity plate 8 sensed by the proximity switch 3 changes, the distance between the two trolley wheels 1 is measured by the distance sensor 4 in combination with the work of the PLC programmable controller 6, and the state of the trolley wheel 1 is judged according to the change in the distance between the two wheels 1. According to this idea, the spacing data of the two wheels 1 is collected, and the on-site distance sensor 4 is combined with the PLC programmable controller 6 to complete the judgment and calculation of the validity of the data. Considering that the running speed of the sintering machine trolley needs to be adjusted at any time according to the changes in the production process, the change in the distance between the two adjacent wheels of the trolley is equated with the comparison of the theoretical calculation time and the actual measurement time of the two adjacent wheels passing through the distance sensor 4 in the program design, and the change law of the trolley running frequency F and the speed V is analyzed to be a linear function relationship. The system is calculated (which is expressed as V=aF), and then the proportional coefficient a is calculated through the actual operation data, and the trolley running speed V (which is expressed as V=S / T, S is the distance between the two wheels) is deduced, thereby obtaining the theoretical calculation time T for two adjacent wheels to pass through the distance sensor 4. Finally, the theoretical time T is compared with the actual measurement time T1. When T1>T appears, it indicates that the measured distance between two adjacent wheels 1 is greater than the theoretical value, triggering a fault alarm, that is, the trolley wheel 1 falls off. In summary, it is conducive to accurately and stably detecting the changing trend of the loosening and falling off of the trolley wheel 1. When the alarm 5 sounds an alarm, a warning signal is given in time, so that maintenance and replacement are arranged in time, which effectively reduces the risk of equipment accidents, increases the service life of the sintering trolley, and thus reduces the equipment maintenance cost.

[0026] In summary, when using, the device is installed and fixed in the above manner, the installation position of the proximity switch 3 meets the technical requirements, and it is connected to the PLC programmable controller 6 signal, the sintering machine inverter operating frequency F signal is connected to the PLC programmable controller 6, and then Figure 3 As shown, the program control function is added to complete the relevant data collection and calculation. The PLC programmable controller 6 calculates the trolley running speed V through the sintering machine inverter running frequency F and the proportional coefficient a, and converts it into the measurement time T1. Within the T1 time period, the proximity switch 3 detection state signal does not arrive, indicating that the measured distance between the two adjacent wheels 1 is greater than the theoretical value, triggering the trolley wheel 1 falling off fault alarm, thereby realizing the sintering machine trolley wheel 1 falling off alarm.

[0027] All technical features in this embodiment can be freely combined according to actual needs.

[0028] The above embodiments are preferred implementation schemes of the present invention. In addition, other implementation schemes are also included. Any obvious replacement without departing from the concept of the present technical solution is within the protection scope of the present invention.

Claims

1. A sintering machine trolley wheel falling-off alarm device based on PLC operation, comprising a trolley wheel (1) and a proximity switch (3), wherein the proximity switch (3) is arranged above the trolley wheel (1), and is characterized in that: An annular approach plate (8) is fixed to the front end of the trolley wheel (1); a support plate (2) is provided above the proximity switch (3); a PLC programmable controller (6) is fixed to the right side of the upper end of the support plate (2); an alarm (5) fixed to the upper end of the support plate (2) is provided on the left side of the PLC programmable controller (6); and a distance sensor (4) fixed to the upper end of the support plate (2) is provided on the left side of the alarm (5); An induction height adjustment component is provided below the support plate (2).

2. The sintering machine wheel falling-off alarm device based on PLC calculation as claimed in claim 1, characterized in that: The sensing end of the proximity switch (3) corresponds to the annular proximity plate (8) in upper and lower positions.

3. A sintering machine wheel falling-off alarm device based on PLC calculation as claimed in claim 2, characterized in that: The PLC programmable controller (6), the distance sensor (4), the alarm (5) and the proximity switch (3) are signal-connected.

4. The sintering machine wheel falling-off alarm device based on PLC calculation as claimed in claim 1, characterized in that: A mounting plate (7) is fixed to the right end of the support plate (2).

5. The sintering machine wheel falling-off alarm device based on PLC calculation as claimed in claim 1, characterized in that: The induction height adjustment component comprises a scale plate (9), a threaded adjustment rod (10) and an adjustment plate (11); the scale plate (9) is fixed to the lower end of the support plate (2); and the threaded adjustment rod (10) is rotatably connected to the lower end of the support plate (2).

6. A sintering machine wheel falling-off alarm device based on PLC calculation as claimed in claim 5, characterized in that: The adjustment plate (11) is slidably sleeved on the outer periphery of the scale plate (9), the threaded adjustment rod (10) is threadedly penetrated through the adjustment plate (11) from top to bottom, and the proximity switch (3) is fixed to the lower end of the adjustment plate (11).

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