CN210133695U - Stacker-reclaimer bucket wheel rotation state detecting system and stacker-reclaimer - Google Patents
Stacker-reclaimer bucket wheel rotation state detecting system and stacker-reclaimer Download PDFInfo
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- CN210133695U CN210133695U CN201920810315.0U CN201920810315U CN210133695U CN 210133695 U CN210133695 U CN 210133695U CN 201920810315 U CN201920810315 U CN 201920810315U CN 210133695 U CN210133695 U CN 210133695U
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Abstract
The utility model provides a stacker-reclaimer bucket wheel rotating state detecting system, include: the induction piece is arranged on the bucket wheel and is used for rotating together with the bucket wheel; the position switch is used for detecting the sensing piece entering the sensing area of the position switch under the condition that the bucket wheel rotates, and processing the sensing piece to obtain the rotation state of the bucket wheel; the control terminal is in communication connection with the position switch and is used for receiving the rotation state signal sent by the position switch in real time; the rotation state includes: a normal rotation state and an abnormal rotation state. The utility model discloses a position switch detects the frequency of response piece and judges whether normal the bucket wheel rotational speed to directly send the result to control terminal, for the mode of testing the speed now, position switch is more durable than speed sensor, and more importantly its operation is stable, can realize the accurate control to the rotational speed of bucket wheel completely.
Description
Technical Field
The utility model relates to a stacker-reclaimer technical field especially relates to a stacker-reclaimer bucket wheel rotating state detecting system.
Background
The bucket-wheel stacker reclaimer is important storage yard operation equipment for coal wharfs and mainly comprises a walking mechanism, a slewing mechanism, a pitching mechanism, a bucket wheel mechanism, a cantilever belt mechanism and the like. The main function of the device is to take the coal on the storage yard to the ground belt for the ship loader to load.
After the intelligent transformation of the stacker-reclaimer, unmanned automatic operation on the machine is realized. When the stacker-reclaimer operates automatically, the automatic program needs to monitor the states of each mechanism of the stacker-reclaimer in different modes, including the walking distance, the rotation and pitching angles, the working pressure of a hydraulic motor, the belt flow, the rotating speed of a bucket wheel and the like. The stacker-reclaimer needs to monitor the running state of the bucket wheel in real time in the automatic stacking, automatic material taking and automatic zero returning processes, and related functions can be realized only when the bucket wheel reaches the normal rotating speed. Therefore, the detection of the rotation speed of the bucket wheel plays an important role in the automatic operation of the stacker-reclaimer. A bucket wheel structure in the prior art is shown in fig. 1, and mainly includes a drive shaft 1, a wheel disc 2, a bucket 3, and the like.
The original bucket wheel rotation speed detection is usually completed by adopting a rotation speed sensor for detection or working pressure estimation and the like. The rotating speed sensor is accurate in detection, but has high requirements on installation precision, and the bucket wheel mechanism of the stacker-reclaimer is often in a state of poor working condition environment, so that the speed measuring sensor can be frequently damaged, and certain influence is brought to the continuity of production operation; the method for estimating the rotating speed through the working pressure of the bucket wheel is simple and easy to implement, but the estimation data is obtained through assignment of empirical values, the real running state of the bucket wheel cannot be reflected, and the risk that the working pressure is normal but the bucket wheel rotates abnormally exists. Therefore, the device is suitable for the field working condition of the stacker-reclaimer, realizes the accurate detection of the rotating speed of the bucket wheel, and is a technical problem to be solved urgently in the field at present.
SUMMERY OF THE UTILITY MODEL
To the problem that above-mentioned prior art exists, the utility model aims at providing a stacker-reclaimer bucket wheel rotating state detecting system for accurate realization is to the real-time supervision of bucket wheel rotational speed.
In order to achieve the above purpose, the technical scheme of the utility model is realized like this:
a stacker-reclaimer bucket-wheel rotation state detecting system includes:
the induction piece is arranged on the bucket wheel and is used for rotating together with the bucket wheel;
the position switch is used for detecting the sensing piece entering the sensing area of the position switch under the condition that the bucket wheel rotates, obtaining the rotation state of the bucket wheel and outputting a rotation state signal;
the control terminal is in communication connection with the position switch and is used for receiving the rotation state signal sent by the position switch in real time;
wherein the bucket wheel rotation state includes: a normal rotation state and an abnormal rotation state.
Furthermore, the number of the induction pieces is larger than two, and the distance between any two adjacent induction pieces is the same.
Further, under the condition that the bucket wheel rotates, the running tracks of all the sensing pieces are the same.
Further, the sensing piece is arranged on the driving shaft of the bucket wheel;
or the bucket wheel is provided with a speed measuring turntable which rotates synchronously with the bucket wheel, and the sensing piece is fixedly connected with the speed measuring turntable;
or the sensing piece is arranged on a wheel disc of the bucket wheel.
Further, the induction part is a cylindrical body, and the end face or the side face of the induction part is fixedly connected with the bucket wheel.
Further, the induction part is a metal induction part.
Further, the position switch is a non-contact position switch;
wherein the position switch is: an underswitch or a proximity switch.
Furthermore, a protective shell is arranged outside the position switch.
Further, the control terminal is a PLC terminal.
On the other hand, the utility model discloses a stacker-reclaimer, including the above stacker-reclaimer nucket-wheel rotating state detecting system.
Compared with the prior art, the utility model discloses a position switch detects the frequency of response piece and judges whether normal the bucket wheel rotational speed to directly send the result to control terminal, for the mode of testing the speed now, the utility model discloses in not only the response piece is not fragile, the position switch who adopts moreover is more durable for speed sensor, has especially delayed life under the relatively abominable operational environment of bucket wheel moving, and it is stable to operate more importantly, can realize the accurate control to the rotational speed of bucket wheel completely. In addition, the related logic of the rotation speed judgment can be directly arranged in the position switch, so that the logic structure in a control terminal (such as a PLC) is reduced, and the whole detection system is ensured to run more smoothly.
Other features and advantages of the present invention will be described in detail in the detailed description which follows.
Drawings
The accompanying drawings, which form a part hereof, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without undue limitation. In the drawings:
FIG. 1 is a schematic diagram of a bucket wheel structure in the prior art;
fig. 2 is a system block diagram of the bucket wheel rotation state detection system of the present invention;
fig. 3 is a structural diagram of a bucket wheel rotation state detection system according to an embodiment of the present invention;
fig. 4 is a structural diagram of a bucket wheel rotation state detection system according to another embodiment of the present invention;
fig. 5 is a structural diagram of a bucket wheel rotation state detection system according to still another embodiment of the present invention.
Description of the reference numerals
1-drive shaft 2-wheel disc
3-bucket 4-sensor
5-position switch 501-sensing area
6-speed measuring rotary disc
Detailed Description
In the present invention, the embodiments and the features of the embodiments may be combined with each other without conflict.
The utility model discloses a stacker-reclaimer bucket wheel rotating state detecting system, as shown in FIG. 2, include:
the sensor 4 is arranged on the bucket wheel, and the sensor 4 is used for rotating together with the bucket wheel;
the position switch 5 is used for detecting the sensing piece 4 entering the sensing area 501 of the position switch 5 under the condition that the bucket wheel rotates, obtaining the rotation state of the bucket wheel and outputting a rotation state signal;
the control terminal is in communication connection with the position switch 5 and is used for receiving the rotation state signal sent by the position switch 5 in real time;
wherein the bucket wheel rotation state includes: a normal rotation state and an abnormal rotation state.
The utility model discloses the theory of operation as follows:
when the bucket wheel starts to rotate, the sensing piece 4 rotates along with the bucket wheel, when the sensing piece 4 rotates to a sensing area 501 of the position switch 5, the position switch 5 detects and records a sensing result, the position switch 5 counts the times of the sensing result recorded in a certain time, if the sensing times are within a preset range, a normal rotation state signal is sent, otherwise, an abnormal rotation state signal is sent; the control terminal receives the rotation state signal sent by the position switch 5, and can directly obtain the rotation state of the bucket wheel without secondary processing, and then feed back the rotation state to a worker or perform corresponding operation.
The number of the sensing members 4 may be one or more. When the response piece 4 is one, every turn round position switch 5 of bucket wheel can respond to and record once, that is to say position switch 5 twice senses the interval time of response piece 4 and is the time that the bucket wheel rotated a round, and the rotational speed of seeking the bucket wheel is: the difference between the number of times the sensing member 4 is sensed by one rotation of the bucket wheel (the value is 1 in this embodiment) and the time taken for one rotation of the bucket wheel is as follows:
V＝X/t
wherein, V represents the rotation speed of the bucket wheel, t represents time, and X represents the number of turns of the bucket wheel in the time t.
The above calculations can be performed by the position switch 5 itself, and the existing position switch 5 available on the market has the function of processing the above calculations, and it is not necessary for those skilled in the art to perform the adjustment of the position switch 5 based on the requirement. Therefore, the utility model discloses be suitable for the transformation to current stacker-reclaimer, needn't increase new procedure in the PLC that corresponds, guaranteed PLC operation smoothness degree, even if PLC presents the obstacle in addition, also can be through the rotation status signal of other control terminal receipt bucket wheels, guarantee to the incessant detection of its speed.
In actual production detection, if only one sensing element 4 is adopted, the sensing frequency of the position switch 5 is low, the detection range of most position switches 5 is 20-150r/min (revolutions per minute), the sensing frequency is obviously lower than the detection range, and the detection result may be inaccurate, so that a plurality of sensing elements 4 are preferably arranged to increase the sensing frequency of the position switch 5, and the sensing frequency is higher as the number of the sensing elements 4 is larger. As shown in fig. 3, in one embodiment, there are 10 sensing members 4 on the bucket wheel, so that the sensing frequency is within the detection range of the position switch 5. On the other hand, it is preferable that the distance between two adjacent sensors 4 is the same, so as to ensure that the sensors 4 can accurately reflect the rotation speed of the bucket wheel, so as to obtain an accurate detection result.
Preferably, when the bucket wheel rotates, the moving tracks of all the sensing members 4 are the same, so that each sensing member 4 can accurately pass through the sensing area 501 of the position switch 5, and the situations of missing detection and error detection are prevented.
In some embodiments of the present invention, the sensing member 4 may be disposed at any position of the bucket wheel. As shown in fig. 4, the sensing member 4 is disposed on the driving shaft 1 of the bucket wheel, the driving shaft 1 is located at the center of the bucket wheel, the rotating speed of the bucket wheel can be accurately reflected, and meanwhile, the diameter of the sensing member is relatively short, and compared with the sensing member disposed at other positions, the sensing member has a higher sensing frequency, so that the number of the sensing members 4 can be reduced, and the cost is reduced. It is also possible to arrange it on the wheel disc 2 to which the drive shaft 1 is connected, but this construction has a lower induction frequency, and the number of induction elements 4 needs to be increased in order to ensure proper operation of the test.
Fixed connection modes such as welding are usually adopted with the fixed of bucket wheel to response 4, consider work such as 1 maintenance of drive shaft, need avoid at 1 direct weld induction system of drive shaft as far as possible, consequently the utility model discloses an optimal embodiment, as shown in fig. 4, cup jointed the carousel 6 that tests the speed that can dismantle in the drive shaft 1 of bucket wheel, the carousel 6 that tests the speed rotates with the bucket wheel is synchronous, sets up a plurality of responses 4 on rim plate 2, makes it be connected with drive shaft 1 is indirect, not only can guarantee the accuracy of testing result to convenient the dismantlement, work such as convenient maintenance.
In some embodiments of the present invention, the bucket wheel may be fixedly connected to any position of the sensing member 4, as shown in fig. 3 and 4, any one end surface of two ends of the sensing member 4 is fixedly connected to the bucket wheel, the position switch 5 is disposed along the radial direction of the driving shaft 1, and as the bucket wheel rotates, the other end surface of the sensing member 4 enters the sensing region 501 of the position switch 5 and is sensed; in another preferred structure, as shown in fig. 5, the side surface of the sensing member 4 is fixedly connected with the speed measuring turntable 6 on the driving shaft 1, the position switch 5 is arranged along the axial direction of the driving wheel, and as the bucket wheel rotates, one end surface of the sensing member 4 enters the sensing area 501 of the position switch 5 and is sensed.
In some embodiments of the utility model, for the detection response piece 4 that guarantees that position switch 5 can be accurate, response piece 4 can adopt metal material to make, and the preferred column body of shape of response piece 4 can be bought as response piece 4 on the market at present, needn't carry out too much repacking.
In the above embodiment, the position switch 5 is a non-contact position switch 5, and the sensing area 501 is a certain range of the position switch 5 itself, in other embodiments, the position switch 5 may be a contact position switch 5, and the sensing area 501 is above the position switch 5 itself, so the sensing element 4 can be sensed only when touching the position switch 5.
In some embodiments of the present invention, the position switch 5 may be an existing underspeed switch or a proximity switch. Wherein, the underspeed is made the slide switch and is a high reliability, counter shaft rotational speed and other simple general monitoring devices of rotary device, response piece 4 can provide a pulse signal for the underspeed switch, response piece 4 produces a pulse signal through the response region 501 of an underspeed switch promptly, when producing a pulse signal, the pulse pilot lamp on the underspeed is made the slide switch panel and can dodge once to record once. The method comprises the steps that an under-speed switch senses in real time, a rotation state signal sent by the under-speed switch is a switching value signal, when a detection result is within a preset sensing frequency range, the under-speed switch is triggered, an internal normally open contact is closed, and a signal of a normal rotation state is sent to a PLC; and otherwise, the under-speed switch is not triggered, the internal normally open contact does not act, the normally closed contact keeps closed, and a signal of an abnormal rotation state is input to the PLC.
The sensing area 501 of the under-speed switch is usually smaller, so that for a large mechanical device such as a bucket wheel, a proximity switch can be used to replace the under-speed switch, the proximity switch has a larger sensing area 501 and a higher sensing frequency, and the corresponding function of the under-speed switch can be realized.
In some embodiments of the utility model, because the bucket wheel operational environment is complicated abominable relatively, for protection position switch 5, can adopt position switch 5 to set up the protective housing outward, prevent that fortune material from splashing and damaging position switch 5.
In some embodiments of the utility model, control terminal is the PLC terminal, rotates the state signal promptly and can directly send to the PLC that stacker-reclaimer corresponds in, makes things convenient for the staff to concentrate and consult to can be associated with relevant control program in the PLC, automatic control resumes normal rotational speed under the unusual circumstances of rotational speed. The PLC and the position switch 5 may be connected by a cable, or may communicate by a wireless connection such as ethernet connection or optical connection.
The following provides a representative embodiment and working principle of the present invention, as shown in fig. 3 and 4, specifically as follows:
in the material piling and taking machine based on the 6000t/h specification, the normal rotating speed of the bucket wheel is 6-7r/min, the detection range of the under-speed switch is 20-150r/min, namely, the sensing part 4 can be triggered to work only by scanning at least 20 times per minute. If the rotating speed of the bucket wheel is X r/min and the number of the sensing pieces 4 is N, the sensing times per minute of the under-speed switch can be represented by the following formula:
P＝X*N
when the bucket wheel normally operates, P is not less than 20 and not more than 150, and the under-speed switch can normally work to achieve the bucket wheel detection function. According to the method, the number of the installed sensing pieces 4 is 10, the rotating speed of the bucket wheel is amplified by 10 times for detection, and the detection interval of the under-speed switch is met.
If the rotating speed of the bucket wheel is 6r/min, the reaction frequency P of the under-speed switch per minute is 60, the under-speed switch can normally work when the set rotating speed reaches more than 60% of the normal rotating speed in actual work, namely X is more than 3.6r/min, the lowest induction frequency for triggering the under-speed switch is 36, namely the lower limit of the under-speed switch is 36.
In the actual work of the bucket wheel, when the rotating speed of the bucket wheel is greater than the lowest normal value and the induction times of the under-speed switch reach the lowest induction value, namely P is greater than 36, the under-speed switch is triggered, an internal normally open contact is closed, and a signal in a normal rotating state is input to the PLC; when the rotating speed of the bucket wheel is lower than the lowest normal value, the induction quantity of the under-speed switch does not reach the lowest induction value, namely P is less than or equal to 36, the under-speed switch is not triggered, the internal normally open contact does not act, the normally closed contact is kept closed, and a signal of an abnormal rotating state is input to the PLC.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The utility model provides a stacker-reclaimer bucket wheel rotating state detecting system which characterized in that includes:
the induction piece is arranged on the bucket wheel and is used for rotating together with the bucket wheel;
the position switch is used for detecting the sensing piece entering the sensing area of the position switch under the condition that the bucket wheel rotates, obtaining the rotation state of the bucket wheel and outputting a rotation state signal;
the control terminal is in communication connection with the position switch and is used for receiving the rotation state signal sent by the position switch in real time;
wherein the bucket wheel rotation state includes: a normal rotation state and an abnormal rotation state.
2. The system of claim 1, wherein the number of the sensing members is greater than two, and the distance between any two adjacent sensing members is the same.
3. The stacker-reclaimer bucket-wheel rotation state detecting system of claim 2, wherein the travel locus of all the sensing members is the same in case of the bucket-wheel rotation.
4. The stacker-reclaimer bucket wheel rotational condition detecting system of claim 3, wherein the sensing member is provided on a drive shaft of the bucket wheel;
or the bucket wheel is provided with a speed measuring turntable which rotates synchronously with the bucket wheel, and the sensing piece is fixedly connected with the speed measuring turntable;
or the sensing piece is arranged on a wheel disc of the bucket wheel.
5. The system for detecting the rotation state of the bucket wheel of the stacker-reclaimer according to claim 4, wherein the sensing member is a cylindrical body, and an end surface or a side surface of the sensing member is fixedly connected with the bucket wheel.
6. The stacker-reclaimer bucket-wheel rotation status detecting system of claim 5, wherein the sensor is a metal sensor.
7. The stacker-reclaimer bucket-wheel rotational condition detecting system of claim 1, wherein the position switch is a non-contact position switch;
wherein the position switch is: an underswitch or a proximity switch.
8. The stacker-reclaimer bucket-wheel rotation status detecting system of claim 1, wherein a protective case is provided outside the position switch.
9. The stacker-reclaimer bucket-wheel rotation status detecting system of claim 1, wherein the control terminal is a PLC terminal.
10. A stacker-reclaimer, characterized by comprising the stacker-reclaimer bucket-wheel rotation state detection system according to any one of claims 1 to 9.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920810315.0U CN210133695U (en) | 2019-05-31 | 2019-05-31 | Stacker-reclaimer bucket wheel rotation state detecting system and stacker-reclaimer |
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| CN201920810315.0U CN210133695U (en) | 2019-05-31 | 2019-05-31 | Stacker-reclaimer bucket wheel rotation state detecting system and stacker-reclaimer |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117714637A (en) * | 2023-11-16 | 2024-03-15 | 中交机电工程局有限公司 | Monitoring system and method for production operation process in port |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117714637A (en) * | 2023-11-16 | 2024-03-15 | 中交机电工程局有限公司 | Monitoring system and method for production operation process in port |
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Address after: 100011 Shenhua building, 22 West Binhe Road, Dongcheng District, Beijing Patentee after: China Shenhua Energy Co.,Ltd. Patentee after: Guoneng Huanghua Port Co.,Ltd. Address before: 100011 Shenhua building, 22 West Binhe Road, Dongcheng District, Beijing Patentee before: China Shenhua Energy Co.,Ltd. Patentee before: SHENHUA HUANGHUA PORT Co.,Ltd. |
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