CN220810789U - Three-drive two-tensioning framework of conveyor and synchronous control and torsion release system thereof - Google Patents
Three-drive two-tensioning framework of conveyor and synchronous control and torsion release system thereof Download PDFInfo
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- CN220810789U CN220810789U CN202322161308.1U CN202322161308U CN220810789U CN 220810789 U CN220810789 U CN 220810789U CN 202322161308 U CN202322161308 U CN 202322161308U CN 220810789 U CN220810789 U CN 220810789U
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Abstract
The utility model provides a three-drive two-tensioning framework of a conveyor and a synchronous control and torsion release system thereof, which comprises the following components: the device comprises a first driving device, a second driving device, a third driving device, a first tensioning device, a second tensioning device, a man-machine interaction interface and a PLC (programmable logic controller), wherein the first driving device, the second driving device and the third driving device are connected in pairs through a chain, the first tensioning device is arranged between the first driving device and the second driving device, the second tensioning device is arranged between the second driving device and the third driving device, the first tensioning device is electrically connected with the first driving device, the second tensioning device is electrically connected with the second driving device, the man-machine interaction interface is electrically connected with the PLC, and the PLC is electrically connected with the rest parts. The three-drive two-tensioning framework of the conveyor and the synchronous control and torsion release system thereof provided by the utility model have the advantages that one tensioning device is reduced, the cost is saved, the field utilization efficiency is improved, and the difficulty of synchronous adjustment is reduced.
Description
Technical Field
The utility model relates to the technical field of electrical equipment control, in particular to a three-drive two-tensioning framework of a conveyor and a synchronous control and torsion release system thereof.
Background
Three tensioning devices are usually configured for three drives in the common conveyor industry, namely one tensioning device is configured for one drive, so that the chain between the drives is in a tensioning state at any time, the phenomenon that the chain is stacked and clamped in a track due to loosening is avoided, and the phenomenon that the whole line is stopped even the equipment is irreversibly damaged is avoided. The conventional conveyor with three-drive three-tensioner architecture also requires synchronous control of the three drives, because the three drives all have their own tensioners, the electrical architecture requires 2 phase angle controllers and 1 synchronous transmitter (86G), and 2 synchronous receivers (86 CT), with 86G mounted on the drive sprockets of the main drive, 86CT mounted on the drive sprockets of the auxiliary drive 1 and the auxiliary drive 2, respectively, with the main drive being a constant speed, and the auxiliary drive 1 and the auxiliary drive 2 following the speed of the main drive. When the conveyor starts to run, the synchronous transmitter and the synchronous receiver feed back the rotation phase angles of the three driving sprockets to the special phase angle controller for comparison, and the auxiliary drive 1 and the auxiliary drive 2 are respectively compared with the phase angle of the main drive based on the rotation phase angle of the main drive, when the rotation phase angle of the auxiliary drive advances the rotation phase angle of the main drive, the synchronous controller can reduce the speed of the auxiliary drive to maintain the consistent phase angle, otherwise, when the rotation phase angle of the auxiliary drive is behind the rotation phase angle of the main drive, the synchronous controller can increase the speed of the auxiliary drive to maintain the consistent phase angle, thereby achieving the aim of synchronizing the main drive and the auxiliary drive. Because the installation position of the tensioning device needs to be at a 180-degree turning position after driving, Bureau limitation and control complexity of the whole conveyor line body on layout are improved, the cost is high, the occupied area is large, and synchronous adjustment is difficult, so that it is necessary to design a three-driving two-tensioning structure of a conveyor and a synchronous control and torsion release system of the three-driving two-tensioning structure of the conveyor.
Disclosure of utility model
The utility model aims to provide a three-drive two-tensioning framework of a conveyor and a synchronous control and torsion release system thereof, which reduces one tensioning device, saves cost, improves field utilization efficiency and reduces difficulty of synchronous adjustment.
In order to achieve the above object, the present utility model provides the following solutions:
a three-drive two-tensioning architecture for a conveyor and a synchronous control and torque release system thereof, comprising: the device comprises a first driving device, a second driving device, a third driving device, a first tensioning device, a second tensioning device, a man-machine interaction interface and a PLC, wherein the first driving device, the second driving device and the third driving device are connected in pairs through a chain, the first tensioning device is arranged between the first driving device and the second driving device, the second tensioning device is arranged between the second driving device and the third driving device, the first tensioning device is electrically connected with the first driving device, the second tensioning device is electrically connected with the second driving device, the man-machine interaction interface is electrically connected with the PLC, and the PLC is electrically connected with the first driving device, the second driving device, the third driving device, the first tensioning device and the second tensioning device;
The first driving device comprises a first driving motor speed reducer, a torque limiter, a first frequency converter and a first driving sprocket, wherein the PLC is electrically connected with the first frequency converter, the first frequency converter is connected with the first driving motor speed reducer, the first driving motor speed reducer is connected with the torque limiter, the torque limiter is connected with the first driving sprocket, and the first driving sprocket drives the chain to move;
The second driving device comprises a second driving motor speed reducer, a second frequency converter and a second driving sprocket, wherein the PLC is electrically connected with the second frequency converter, the second frequency converter is connected with the second driving motor speed reducer, the second driving motor speed reducer is connected with the second driving sprocket, and the second driving sprocket is connected with a chain;
The third driving device comprises a third driving motor speed reducer, a third frequency converter and a third driving sprocket, wherein the PLC is electrically connected with the third frequency converter, the third frequency converter is connected with the third driving motor speed reducer, the third driving motor speed reducer is connected with the third driving sprocket, and the third driving sprocket is connected with a chain.
Optionally, the first overspeed device tensioner includes synchronous abnormal belt, pull wire encoder, first internal shrinkage early warning switch group and first external stretching early warning switch group, first internal shrinkage early warning switch group sets up synchronous abnormal belt is close to second drive arrangement one side, first external stretching early warning switch group sets up synchronous abnormal belt is close to first drive arrangement one side, pull wire encoder sets up synchronous abnormal belt midpoint, the tensile of pull wire encoder moves in step along with the external condition of internal shrinkage of first overspeed device department, pull wire encoder, first internal shrinkage early warning switch group and first external stretching early warning switch group electric connection respectively the PLC.
Optionally, the second tensioning device includes a second retraction early warning switch group and a second extension early warning switch group, the second retraction early warning switch group is arranged on one side close to the third driving device, the second extension early warning switch group is arranged on one side close to the second driving device, and the second retraction early warning switch group and the second extension early warning switch group are respectively and electrically connected with the PLC.
Optionally, the speed of the first driving motor speed reducer and the speed of the third driving motor speed reducer are constant, and the speed of the first driving motor speed reducer is slightly faster than the speed of the third driving motor speed reducer.
Optionally, the synchronous abnormal belt is divided into a synchronous original point position, a synchronous non-inductive belt and a synchronous chasing belt, the first retraction early warning switch group comprises a first retraction early warning travel switch and a first retraction limit travel switch, the first extension early warning switch group comprises a first extension early warning travel switch and a first extension limit travel switch, the midpoint of the synchronous non-inductive belt is provided with the synchronous original point position, two ends of the synchronous non-inductive belt are respectively provided with a synchronous chasing belt, the outer side of the synchronous chasing belt close to one side of the second driving device is provided with the first retraction early warning travel switch, the outer side of the first retraction early warning travel switch is provided with the first retraction limit travel switch, the outer side of the synchronous chasing belt close to one side of the first driving device is provided with the first extension limit travel switch, the pull wire encoder pull wire is retracted to the root position and provided with a pull wire encoder zero point, and the first retraction early warning travel switch, the first inner limit travel switch, the first retraction early warning travel switch and the first extension travel switch are respectively electrically connected with the first extension early warning travel switch.
Optionally, the second retraction early warning switch group includes second retraction early warning travel switch and second retraction limit travel switch, the second extension early warning switch group includes second retraction early warning travel switch and second extension limit travel switch, is close to third drive arrangement one side and sets up the second retraction early warning travel switch, the second retraction early warning travel switch outside sets up the second retraction limit travel switch is close to second drive arrangement one side and sets up the second extension early warning travel switch, the second extension early warning travel switch outside sets up the second extension limit travel switch, second retraction early warning travel switch, second retraction limit travel switch, second extension early warning travel switch and second extension limit travel switch respectively electric connection PLC.
According to the specific embodiment provided by the utility model, the utility model discloses the following technical effects: the three-drive two-tensioning framework of the conveyor and the synchronous control and torsion release system thereof adopt the structure that three drive devices are matched with two tensioning devices, so that one tensioning device is reduced, and the same conveying effect is achieved; judging whether the first driving device and the second driving device are synchronous or not by utilizing the rope pulling device, transmitting a signal to the PLC when the first driving device and the second driving device are in an asynchronous state, and controlling the second driving device to increase or decrease by the PLC so as to automatically achieve driving synchronization; the tensioning device pre-warning is performed after the tensioning device position mark reaches the inward shrinkage early warning travel switch or the outward shrinkage early warning travel switch, and the tensioning device control device is customized to run after the tensioning device position mark reaches the inward shrinkage limit travel switch or the outward shrinkage early warning travel switch, so that mechanical damage caused by excessive speed difference of the driving device is avoided; a group of mechanical torsion limiters are additionally arranged in the first driving device, and the excessive chain traction moment is released, so that the aim of not overload in a chain tensioning state is fulfilled.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions of the prior art, the drawings that are needed in the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a three-drive two-tensioning architecture of a conveyor according to an embodiment of the present utility model;
FIG. 2 is a schematic diagram of a first driving device according to an embodiment of the present utility model;
FIG. 3 is a schematic view of a first tensioner according to an embodiment of the present utility model;
FIG. 4 is a partial enlarged view of embodiment A of the present utility model;
FIG. 5 is a side view of a second tensioner of an embodiment of the present utility model;
FIG. 6 is a schematic diagram of a second tensioner travel synchronization detecting portion according to an embodiment of the present utility model;
fig. 7 is a schematic diagram of an electric control system according to an embodiment of the present utility model.
Reference numerals: 1. a chain; 2. a first driving device; 3. a second driving device; 4. a third driving device; 5. a first tensioning device; 6. a second tensioning device; 7. a human-computer interaction interface; 8. a PLC; 201. a first drive motor speed reducer; 202. a torsion limiter; 203. a first frequency converter; 204. a drive chain; 301. a second drive motor reducer; 302. a second frequency converter; 401. a third drive motor speed reducer; 402. a third frequency converter; 501. synchronizing the abnormal belt; 502. a stay wire encoder; 503. a first retraction early warning travel switch; 504. a first retraction limit travel switch; 505. the first overhanging early warning travel switch; 506. a first overhanging limit travel switch; 5011. synchronizing the original points; 5012. synchronous non-inductive tape; 5013. synchronous chasing belt; 601. the second inward shrinking early warning travel switch; 602. a second retraction limit travel switch; 603. a second outward extending early warning travel switch; 604. and a second extension limit travel switch.
Detailed Description
The utility model aims to provide a three-drive two-tensioning framework of a conveyor and a synchronous control and torsion release system thereof, which reduces one tensioning device, saves cost, improves field utilization efficiency and reduces difficulty of synchronous adjustment.
In order that the above-recited objects, features and advantages of the present utility model will become more readily apparent, a more particular description of the utility model will be rendered by reference to the appended drawings and appended detailed description.
As shown in fig. 1, a three-drive two-tensioning architecture of a conveyor and a synchronous control and torsion release system thereof comprise: the device comprises a first driving device 2, a second driving device 3, a third driving device 4, a first tensioning device 5, a second tensioning device 6, a man-machine interaction interface 7 and a PLC8, wherein the first driving device 2, the second driving device 3 and the third driving device 4 are connected in pairs through a chain 1, the first tensioning device 5 is arranged between the first driving device 2 and the second driving device 3, the second tensioning device 6 is arranged between the second driving device 3 and the third driving device 4, the first tensioning device 5 is electrically connected with the first driving device 2, the second tensioning device 6 is electrically connected with the second driving device 3, the man-machine interaction interface 7 is electrically connected with the PLC8, and the PLC8 is electrically connected with the first driving device 2, the second driving device 3, the third driving device 4, the first tensioning device 5 and the second tensioning device 6;
The first tensioning device 5 comprises a synchronous abnormal belt 501, a stay wire encoder 502, a first retraction early warning switch group and a first extension early warning switch group, wherein the first retraction early warning switch group is arranged on one side of the synchronous abnormal belt 501 close to the second driving device 3, the first extension early warning switch group is arranged on one side of the synchronous abnormal belt 501 close to the first driving device 2, the stay wire encoder 502 is arranged on the outer side of the first retraction early warning switch group, and the stay wire encoder 502, the first retraction early warning switch group and the first extension early warning switch group are respectively electrically connected with the PLC8;
The second tensioning device 6 comprises a second inward shrinkage early warning switch group and a second outward stretching early warning switch group, the second inward shrinkage early warning switch group is arranged on one side close to the third driving device 4, the second outward stretching early warning switch group is arranged on one side close to the second driving device 3, and the second inward shrinkage early warning switch group and the second outward stretching early warning switch group are respectively and electrically connected with the PLC8.
As shown in fig. 2, the first driving device 2 includes a first driving motor speed reducer 201, a torque limiter 202, a first frequency converter 203 and a first driving sprocket, the PLC8 is electrically connected to the first frequency converter 203, the first frequency converter 203 is connected to the first driving motor speed reducer 201, the first driving motor speed reducer 201 is connected to the torque limiter 202, the torque limiter 202 is connected to the first driving sprocket, and the first driving sprocket drives the chain 1 to move. In one embodiment of the present utility model, a set of mechanical torque limiter 202 is added between the first driving motor reducer 201 and the driving sprocket, and the torque wrench is used to set the torque in the safety range of the chain 1 and the motor, or the first frequency converter 203 is a frequency converter with the torque setting function, and the torque in the safety range is set to limit the output torque of the first driving device 2, so that the excessive traction torque of the chain 1 is released, and the tension state of the chain 1 is achieved without overload.
The second driving device 3 comprises a second driving motor speed reducer 301, a second frequency converter 302 and a second driving sprocket, the PLC8 is electrically connected with the second frequency converter 302, the second frequency converter 302 is connected with the second driving motor speed reducer 301, the second driving motor speed reducer 301 is connected with the second driving sprocket, and the second driving sprocket is connected with the chain 1.
The third driving device 4 comprises a third driving motor speed reducer 401, a third frequency converter 402 and a third driving sprocket, the PLC8 is electrically connected with the third frequency converter 402, the third frequency converter 402 is connected with the third driving motor speed reducer 401, the third driving motor speed reducer 401 is connected with the third driving sprocket, and the third driving sprocket is connected with the chain 1.
The speed of the first driving motor speed reducer 201 and the speed of the third driving motor speed reducer 401 are constant, and the speed of the first driving motor speed reducer 201 is slightly faster than the speed of the third driving motor speed reducer 401.
As shown in fig. 3 and fig. 4, the synchronous abnormal belt 501 is divided into a synchronous original point 5011, a synchronous non-inductive belt 5012 and a synchronous chase belt 5013, the first retraction early-warning switch group includes a first retraction early-warning travel switch 503 and a first retraction limit travel switch 504, the first extension early-warning switch group includes a first extension early-warning travel switch 505 and a first extension limit travel switch 506, the focus of the synchronous non-inductive belt 5012 is set at the synchronous original point, two ends of the synchronous non-inductive belt 5012 are respectively provided with a synchronous chase belt 5013, the outside of the synchronous chase belt 5013 close to the second driving device 3 is provided with the first retraction early-warning travel switch 503, the outside of the synchronous chase belt 5013 close to the first driving device 2 is provided with the first extension limit travel switch 505, the outside of the first extension limit travel switch 506, the root position of the synchronous non-inductive belt 5012 is provided with the first extension early-warning travel switch 506, and the first retraction limit travel switch 502 is connected to the first extension limit travel switch 8, and the first retraction limit travel switch 502 are respectively.
As shown in fig. 5 and 6, the second retraction early-warning switch set includes a second retraction early-warning travel switch 601 and a second retraction limit travel switch 602, the second retraction early-warning switch set includes a second retraction early-warning travel switch 603 and a second retraction limit travel switch 604, one side close to the third driving device 4 is provided with the second retraction early-warning travel switch 601, one side close to the second driving device 3 is provided with the second retraction limit travel switch 603, one side close to the second driving device 3 is provided with the second retraction early-warning travel switch 603, one side of the second retraction early-warning travel switch 603 is provided with the second retraction limit travel switch 604, and the second retraction early-warning travel switch 601, the second retraction limit travel switch 602, the second retraction early-warning travel switch 603 and the second retraction limit travel switch 604 are respectively electrically connected with the PLC8.
One embodiment of the utility model is: the highest set frequency of the first frequency converter 203 is 51Hz, the acceleration and deceleration time is set at 5-10s, the highest set frequency of the second frequency converter 302 is 60Hz (about 20% higher than the main drive), the highest set frequency of the third frequency converter 402 is 50Hz, which is set for the production speed of the whole conveyor line body, so as to be used as the frequency reference of the first frequency converter 203, the acceleration and deceleration time of the first driving motor speed reducer 201 is consistent with the settings of the second driving motor speed reducer 301 and the third driving motor speed reducer 401, and the first driving device 2 is set as the main drive when synchronously controlling with the second driving device 3;
The first tensioning device 5 is a tensioning device of a main drive (the first driving device 2), the stroke is about 400mm, when the first tensioning device 5 is retracted to the retraction early warning travel switch position, an alarm is given but the device is not stopped, when the first tensioning device 5 is retracted to the first retraction limit travel switch 504 position, the device is stopped immediately and the alarm is given, when the first tensioning device 5 is extended to the first extension early warning travel switch 505 position, the device is given but the device is not stopped, and when the first tensioning device 5 is extended to the first extension limit travel switch 506 position, the device is stopped immediately and the alarm is given.
The second tensioning device 6 is a tensioning device of a secondary drive (the second driving device 3), the stroke is about 400mm, when the second tensioning device 6 is retracted to the retracted early warning travel switch position, an alarm is given but the device is not stopped, when the second tensioning device 6 is retracted to the second retracted limit travel switch 602 position, the device is stopped immediately and the alarm is given, when the second tensioning device 6 is extended to the second extension early warning travel switch 603 position, the device is not stopped, and when the second tensioning device 6 is extended to the second extension limit travel switch 604 position, the device is stopped immediately and the alarm is given.
When the synchronization origin point 5011 is too low in the state of zero position of the pull wire encoder 502, switching to a manual operation mode, and bringing the pull wire of the pull wire encoder 502 to the position (about the middle position of the stroke of the first tensioning device 5), wherein the read value of the pull wire encoder is set as the origin of synchronization and is used as the reference position of synchronization chasing;
The synchronous non-inductive band 5012 is used as a non-inductive band by taking the synchronous origin position 5011 as a reference, setting a fixed distance in the positive and negative directions, and when the stay cord of the stay cord encoder 502 is in the interval, the synchronous state can be considered, and the auxiliary driving frequency is kept the same as the main driving frequency and is not chased;
The synchronous chase band 5013 is used for indicating that the main drive and the auxiliary drive are not in a synchronous state when the stay cords of the stay cord encoder 502 are in the interval, and the interval travel is about 100mm respectively, namely the interval exceeds the non-inductive band interval, if the stay cord position of the stay cord encoder is in the synchronous chase band 5013 close to the inward shrinking zero position side, the auxiliary drive is faster than the main drive, at the moment, the PLC8 is used for sending a signal, the second frequency converter 302 is controlled to reduce the frequency, the frequency is increased or decreased according to the displacement amount with the original point until the frequency returns to the synchronous state, and the frequency increasing and decreasing amplitude of the auxiliary drive compared with the main drive is within a range of plus or minus 20%; if the pull rope position of the pull rope encoder is near the synchronous chasing belt 5013 at the overhanging side, the auxiliary drive is slower than the main drive, and the auxiliary drive frequency converter is required to be informed to increase the frequency at the moment, and the frequency is increased or decreased according to the displacement amount with the origin until the frequency returns to the synchronous state;
The synchronous abnormal belt 501 is used for immediately giving an alarm when the pull rope of the pull rope encoder 502 is in the section, namely, the synchronous abnormal state is represented, and if other abnormal states exist, the synchronous abnormal state is manually adjusted to the synchronous original point 5011 again after the abnormal state is eliminated.
The first tensioning device and the second tensioning device are devices existing in the art and are not described in detail herein.
The three-drive two-tensioning framework of the conveyor and the synchronous control and torsion release system thereof provided by the embodiment of the utility model comprise an automatic mode, a manual mode and a maintenance mode, after the conveyor is started in the automatic mode, the first frequency converter 203 keeps running at a frequency which is increased by 0.1-1.0Hz based on the set frequency of the third frequency converter 402 at any time (according to the actual condition of the site), for example, the frequency of the first frequency converter 203 is 45 Hz+0.1Hz=45.1 Hz, when the load of the first driving motor reducer 201 exceeds the preset safe range moment, the torsion limiter 202 arranged on the first driving motor reducer 201 acts (or exceeds the set output moment of the first frequency converter 203) to release excessive torsion so as to maintain the chain 1 between the third driving device 4 and the first driving device 2 in a tensioning state, and ensure that the chain 1 is in a safe moment range, the second frequency converter 302 is kept the same as the first frequency converter 203, and when the asynchronous driving is generated, the auxiliary driving is performed, the auxiliary driving frequency is used as the main driving frequency and the basis, the direction of the auxiliary driving frequency and the basic driving frequency and the displacement is gradually reduced or the displacement is adjusted gradually;
When the synchronization origin position 5011 is required to be adjusted during the adjustment of the conveyor or after the abnormality removal or chain cutting 1, the manual mode is switched to the manual mode, that is, when the first drive motor speed reducer 201 and the third drive motor speed reducer 401 are pressed to operate, the operation is stopped immediately, and when the first drive motor speed reducer 201 and the third drive motor speed reducer 401 are operated, both the positions of the first tensioning device 5 and the second tensioning device 6 are changed, for example, when the first drive motor speed reducer 201 and the third drive motor speed reducer 401 are pressed to drive the manual switch of the first tensioning device 5 to be outwards extended, the second tensioning device 6 is inwards contracted, and when the second tensioning device 6 is reversely pressed to the manual switch of the second drive motor speed reducer 201 and the third drive motor speed reducer 401 to be inwards, the positions of the first tensioning device 5 and the second tensioning device 6 are changed when the first drive motor speed reducer 201 and the third drive motor speed reducer 401 are operated respectively;
When the chain 1 between the first driving device 2 and the third driving device 4 of the conveyor is piled up, broken or otherwise abnormal, the first driving device 2 and the third driving device 4 need to be manually operated individually, and then the maintenance mode needs to be switched to, wherein the mode is a single-driven inching mode, namely, when a driven switch is pressed, the driving motor is operated, the driving motor is released, namely, the operation is stopped, when the first driving motor reducer 201 is pressed to be manually switched on or off, the first tensioning device 5 is outwards extended, the second tensioning device 6 is not changed, when the third driving motor reducer 401 is pressed to be manually switched on, the second tensioning device 6 is inwards contracted, and the first tensioning device 5 is not changed. This mode should be used carefully, usually at the time of exception removal.
The three-drive two-tensioning framework of the conveyor and the synchronous control and torsion release system thereof adopt the structure that three drive devices are matched with two tensioning devices, so that one tensioning device is reduced, and the same conveying effect is achieved; judging whether the first driving device and the second driving device are synchronous or not by utilizing the rope pulling device, transmitting a signal to the PLC when the first driving device and the second driving device are in an asynchronous state, and controlling the second driving device to increase or decrease by the PLC so as to automatically achieve driving synchronization; the tensioning device pre-warning is performed after the tensioning device position mark reaches the inward shrinkage early warning travel switch or the outward shrinkage early warning travel switch, and the tensioning device control device is customized to run after the tensioning device position mark reaches the inward shrinkage limit travel switch or the outward shrinkage early warning travel switch, so that mechanical damage caused by excessive speed difference of the driving device is avoided; a group of mechanical torsion limiters are additionally arranged in the first driving device to release the excessive chain traction moment, thereby achieving the aim of not overload in the chain tensioning state
The principles and embodiments of the present utility model have been described herein with reference to specific examples, the description of which is intended only to assist in understanding the methods of the present utility model and the core ideas thereof; also, it is within the scope of the present utility model to be modified by those of ordinary skill in the art in light of the present teachings. In view of the foregoing, this description should not be construed as limiting the utility model.
Claims (6)
1. A three-drive two-tensioning structure of a conveyor and a synchronous control and torsion release system thereof, which are characterized by comprising: the device comprises a first driving device, a second driving device, a third driving device, a first tensioning device, a second tensioning device, a man-machine interaction interface and a PLC, wherein the first driving device, the second driving device and the third driving device are connected in pairs through a chain, the first tensioning device is arranged between the first driving device and the second driving device, the second tensioning device is arranged between the second driving device and the third driving device, the first tensioning device is electrically connected with the first driving device, the second tensioning device is electrically connected with the second driving device, the man-machine interaction interface is electrically connected with the PLC, and the PLC is electrically connected with the first driving device, the second driving device, the third driving device, the first tensioning device and the second tensioning device;
The first driving device comprises a first driving motor speed reducer, a torque limiter, a first frequency converter and a first driving sprocket, wherein the PLC is electrically connected with the first frequency converter, the first frequency converter is connected with the first driving motor speed reducer, the first driving motor speed reducer is connected with the torque limiter, the torque limiter is connected with the first driving sprocket, and the first driving sprocket drives the chain to move;
The second driving device comprises a second driving motor speed reducer, a second frequency converter and a second driving sprocket, wherein the PLC is electrically connected with the second frequency converter, the second frequency converter is connected with the second driving motor speed reducer, the second driving motor speed reducer is connected with the second driving sprocket, and the second driving sprocket is connected with a chain;
The third driving device comprises a third driving motor speed reducer, a third frequency converter and a third driving sprocket, wherein the PLC is electrically connected with the third frequency converter, the third frequency converter is connected with the third driving motor speed reducer, the third driving motor speed reducer is connected with the third driving sprocket, and the third driving sprocket is connected with a chain.
2. The three-drive two-tensioning framework of a conveyor and a synchronous control and torsion release system thereof according to claim 1, wherein the first tensioning device comprises a synchronous abnormal belt, a pull wire encoder, a first inward shrinkage early warning switch group and a first outward shrinkage early warning switch group, the first inward shrinkage early warning switch group is arranged on one side of the synchronous abnormal belt close to the second driving device, the first outward shrinkage early warning switch group is arranged on one side of the synchronous abnormal belt close to the first driving device, the pull wire encoder is arranged at the midpoint of the synchronous abnormal belt, the pull wire encoder moves synchronously along with the inward shrinkage and outward shrinkage condition of the first tensioning device, and the pull wire encoder, the first inward shrinkage early warning switch group and the first outward shrinkage early warning switch group are respectively electrically connected with the PLC.
3. The three-drive two-tensioning framework of the conveyor and the synchronous control and torsion release system thereof according to claim 1, wherein the second tensioning device comprises a second inward shrinkage early warning switch group and a second outward stretching early warning switch group, the second inward shrinkage early warning switch group is arranged on one side close to the third driving device, the second outward stretching early warning switch group is arranged on one side close to the second driving device, and the second inward shrinkage early warning switch group and the second outward stretching early warning switch group are respectively and electrically connected with the PLC.
4. The three-drive two-tensioning framework of a conveyor and the synchronous control and torsion release system thereof according to claim 1, wherein the speed of the first driving motor speed reducer and the speed of the third driving motor speed reducer are constant, and the speed of the first driving motor speed reducer is slightly faster than the speed of the third driving motor speed reducer.
5. The three-drive two-tensioning framework of a conveyor and a synchronous control and torsion release system thereof according to claim 2, wherein the synchronous abnormal belt is divided into a synchronous original point position, a synchronous non-inductive belt and a synchronous chasing belt, the first retraction early-warning switch group comprises a first retraction early-warning travel switch and a first retraction limit travel switch, the midpoint of the synchronous non-inductive belt is provided with the synchronous original point position, two ends of the synchronous non-inductive belt are respectively provided with the synchronous chasing belt, the outer side of the synchronous chasing belt close to the second driving device is provided with the first retraction early-warning travel switch, the outer side of the synchronous chasing belt close to the first driving device is provided with the first retraction limit travel switch, the outer side of the first retraction early-warning travel switch is provided with the first retraction limit travel switch, the pull-wire encoder pull wire encoder is provided with a pull wire zero-wire encoder pull wire position, and the first retraction limit travel switch are respectively connected with the first retraction limit travel switch and the first PLC.
6. The three-drive two-tensioning framework of a conveyor and a synchronous control and torsion release system thereof according to claim 3, wherein the second retraction early-warning switch group comprises a second retraction early-warning travel switch and a second retraction limit travel switch, the second retraction early-warning travel switch is arranged on one side close to the third driving device, the second retraction limit travel switch is arranged on the outer side of the second retraction early-warning travel switch, the second retraction early-warning travel switch is arranged on one side close to the second driving device, the second retraction limit travel switch is arranged on the outer side of the second retraction early-warning travel switch, and the second retraction early-warning travel switch, the second retraction limit travel switch, the second retraction early-warning travel switch and the second retraction limit travel switch are respectively electrically connected with the PLC.
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| CN202322161308.1U CN220810789U (en) | 2023-08-11 | 2023-08-11 | Three-drive two-tensioning framework of conveyor and synchronous control and torsion release system thereof |
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| CN202322161308.1U CN220810789U (en) | 2023-08-11 | 2023-08-11 | Three-drive two-tensioning framework of conveyor and synchronous control and torsion release system thereof |
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