CN110789921A - Deviation correcting device for transmission machinery - Google Patents
Deviation correcting device for transmission machinery Download PDFInfo
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- CN110789921A CN110789921A CN201911228450.5A CN201911228450A CN110789921A CN 110789921 A CN110789921 A CN 110789921A CN 201911228450 A CN201911228450 A CN 201911228450A CN 110789921 A CN110789921 A CN 110789921A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G15/00—Conveyors having endless load-conveying surfaces, i.e. belts and like continuous members, to which tractive effort is transmitted by means other than endless driving elements of similar configuration
- B65G15/60—Arrangements for supporting or guiding belts, e.g. by fluid jets
- B65G15/64—Arrangements for supporting or guiding belts, e.g. by fluid jets for automatically maintaining the position of the belts
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G43/00—Control devices, e.g. for safety, warning or fault-correcting
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G2203/00—Indexing code relating to control or detection of the articles or the load carriers during conveying
- B65G2203/02—Control or detection
- B65G2203/0266—Control or detection relating to the load carrier(s)
- B65G2203/0283—Position of the load carrier
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Control Of Conveyors (AREA)
- Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
Abstract
The invention discloses a deviation correcting device for transmission machinery, which comprises a rack, wherein two ends of the rack are respectively provided with a movable support, a driving belt wheel and a driven belt wheel of a conveying belt are respectively arranged on the two movable supports, two sides of a carrier roller at the driving belt wheel and the driven belt wheel are respectively provided with a limit switch for detecting deviation information of the conveying belt and sending the deviation information to a system control unit, the system control unit is respectively connected with a transmission execution unit at the driving belt wheel and the driven belt wheel through a main loop and an 5/12V control loop, and the transmission execution unit realizes deviation correction of the conveying belt by controlling the carrier roller to move according to information fed back by the system control unit. The three basic working units are adopted for feedback adjustment and close fit, the deviation rectifying effect is guaranteed, meanwhile, the conveying belt is protected, the labor consumption of maintenance is avoided, and the three basic working units have great advantages in economy, timeliness and accuracy.
Description
Technical Field
The invention belongs to the technical field of industrial transportation, and particularly relates to a deviation correcting device for transmission machinery.
Background
Today, with the rapid development of society, the high speed and automation of production become necessary conditions for enterprise development, and the high speed and automation of production are realized, and the high speed and stability of material and product transmission also become a very concerned problem. In the process of conveying materials and products, the conveying of the conveying belt is popular with various enterprises and design units due to the advantages of stable and continuous transmission, low drop rate, low energy consumption, low cost and the like in the process of modern mechanical production, but in the conveying process of the conveying belt, a frequently existing and unavoidable deviation problem brings inconvenience to the production of the enterprises. When the deviation of the conveying belt is not processed in time so that the deviation range is large, the edge of the conveying belt and the roller frame or the mounting bracket can rub against each other, so that burrs are generated on the edge of the conveying belt quickly, and the conveying belt is damaged too early and even is torn and broken longitudinally; if the adopted conveying belt is made of non-flame-retardant materials, the friction in the deviation process even easily causes fire, and serious production accidents are caused; the conveying belt deviation can also directly influence the transmission of products or production raw materials, bring much inconvenience to the positioning or the metering in the production process, and directly influence the production efficiency and the production quality of enterprises.
The types of the prior common conveyer belt deviation rectifying devices include three types, namely a mechanical type, a hydraulic type and a pneumatic type. Although the hydraulic and pneumatic deviation correcting device has the advantages of sensitive response, stable performance and good deviation correcting effect, the implementation is more difficult due to higher cost, larger initial investment, more assembled elements, larger volume and more occupied space; meanwhile, the friction between the single vertical roller and the edge of the conveying belt is easy to damage the conveying belt and even cause fire; in terms of a transmission link, the hydraulic and pneumatic deviation correcting device is relatively complex, the debugging difficulty is higher, the failure rate of parts is high, the operation and maintenance difficulty is high, and the consumption of a large amount of manpower and material resources is caused.
In contrast, mechanical deviation correction devices are a better choice for belt conveyor users. But the deviation problem of the conveyer belt can be found in time, the reason causing the deviation can be analyzed in detail, and an accurate and reasonable processing scheme is made, so that the transportation performance is improved, and unnecessary loss of manpower and material resources is avoided, which is a problem to be paid attention to by each enterprise and even the whole industry.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a deviation correcting device for transmission machinery, which aims to solve the deviation problem of a conveying belt fundamentally by sensing detection through a limit switch, driving a carrier roller through a relay control loop and a driving screw rod, so that a series of cyclic processes of detection, transmission, adjustment and feedback are achieved.
The invention adopts the following technical scheme:
the utility model provides a deviation correcting device for transmission machinery, which comprises a frame, the both ends of frame are provided with a movable support respectively, be provided with the driving pulley and the driven pulley of conveyer belt on two movable supports respectively, driving pulley and driven pulley department's bearing roller both sides are provided with limit switch respectively, be used for detecting the skew information of conveyer belt and send system control unit, system control unit is connected with the transmission execution unit of driving pulley and driven pulley department respectively through main loop and 5/12V control loop, the transmission execution unit realizes the conveyer belt through the removal of control bearing roller according to the information of system control unit feedback.
Specifically, the frame and the movable support are connected in a sliding mode through sliding rails.
Specifically, the transmission execution unit comprises an electric motor, the electric motor is arranged on the rack, the electric motor is connected with a transmission screw rod arranged on the rack through a gear, a movable sliding block is sleeved on the transmission screw rod, and the movable sliding block is arranged on the movable support.
Furthermore, the gear comprises a first gear and a second gear which are meshed with each other, the first gear is connected with an output shaft of the motor, and the second gear is connected with one end of the transmission screw rod.
Specifically, a main motor is arranged on a movable support at the position of the main belt wheel and is connected with the main belt wheel of the conveying belt through a universal coupling.
Specifically, the transmission executing units at the driving pulley and the driven pulley are diagonally arranged on the corresponding movable supports.
Specifically, a three-phase circuit of the main circuit is divided into two paths, one path is connected with the 5/12V control circuit, the second path is connected with a motor of a transmission execution unit at a driving pulley after passing through a fuse FU1, a relay KM1 and a thermal relay FR1, and a relay KM2 is connected in parallel at a relay KM 1; the third path is connected with a motor of a transmission execution unit at the driven pulley after passing through a fuse FU2, a relay KM3 and a thermal relay FR2, and the relay KM3 is connected in parallel with a relay KM 4.
Compared with the prior art, the invention has at least the following beneficial effects:
the invention relates to a deviation correcting device for transmission machinery, which determines the diversity of the deviation reasons of a conveying belt and the randomness of the deviation reasons due to the flexibility of the materials of the conveying belt, the actual bandwidth requirement of the conveying belt in the actual work, the line contact of the conveying belt in the transmission and the like; meanwhile, the conveying belt is in a running state for a long time, the structure is simple and reliable as far as possible, and the phenomenon that the conveying belt loses the significance of the conveying belt due to overhigh production and transportation cost is avoided. The invention designs and reforms the most commonly used conveying belt in industry according to the consistent characteristic of the conveying belt moving to the tight edge, and ensures the normal operation of the conveying belt through the close fit of three basic working units, namely the position detection unit, the system control unit and the transmission execution unit. The position of the belt is automatically detected in the working process of the conveying belt, and when the deviation of the conveying belt is detected, the execution element is controlled to work to enable the conveying belt to return to a normal position for continuous transportation, so that unnecessary deviation factor analysis is reduced, and the problem of deviation of the conveying belt caused by various reasons is solved quickly and effectively.
Furthermore, most of the existing deviation correcting devices are triggered by the position detection unit by adopting sensors, but the application range of the existing deviation correcting devices is limited by external environment factors, and unnecessary manpower is consumed during early debugging and later overhauling, so that the deviation correcting device only adopts the thought principle of the sensors, selects the limit switch as a detection and triggering point of the whole control circuit, reduces the cost, has a simpler structure, and avoids complex installation, debugging and maintenance work. The limit switches on the carrier rollers on two sides of the conveying belt detect the deviation condition of the conveying belt, and the position of the conveying belt, which deviates, is reliably detected through the closing and opening of the limit switch contacts at different positions of two ends of the conveying belt, and the information is transmitted to the control unit.
Furthermore, the system control unit is the core of the whole device, and considering that the deviation of the conveying belt has randomness, the deviation is a repeated process of deviation, adjustment, re-deviation and re-adjustment.
Furthermore, the transmission execution unit is divided into a driving part and a transmission part. The driving part is that a three-phase motor with small power is respectively added at two ends of the conveying belt, the transmission part is added with a screw rod for carrying transmission, meanwhile, a movable support is added on the basis of a main motor frame of the common conveying belt, the main motor, main shafts at two sides and the screw rod are all fixed on the movable support, and only the movable support, a meshing gear and the screw rod are added at the other end. When the automatic adjusting device works, the motor drives the pair of meshing gears to drive the screw rod to rotate to cause the movable support to longitudinally move so as to drive the carrier roller, and the motor at the other end drives the meshing gears to drive the screw rod to be matched and adjusted while the tightness of the single-side conveying belt is changed.
Furthermore, due to the randomness and uncertainty of the deviation of the conveying belt, the deviation correcting device needs to be adjusted and fed back continuously, a control unit is added, when the position detecting unit detects that the conveying belt returns to the normal working position after the deviation is corrected for one time, the control system controls the motor to rotate reversely through the time relay, so that the roller returns to the normal working position, and the conveying belt is guaranteed to work normally continuously.
In conclusion, the three basic working units are adopted for feedback adjustment and close fit, the deviation rectifying effect is guaranteed, the conveying belt is protected, the labor consumption of maintenance is avoided, and the three basic working units have great advantages in economy, timeliness and accuracy.
The technical solution of the present invention is further described in detail by the accompanying drawings and embodiments.
Drawings
FIG. 1 is an overall frame diagram;
FIG. 2 is a frame diagram of a position detecting unit;
FIG. 3 is a frame diagram of a conveyor belt motor position transmission actuator unit;
FIG. 4 is a frame diagram of a diagonal position transmission actuator unit;
FIG. 5 is a main loop circuit diagram;
fig. 6 is a circuit diagram of a control loop.
Wherein: 1. an electric motor; 2. a gear; 21. a first gear; 22. a second gear; 3. a drive screw; 4. a universal coupling; 5. a slide rail; 6. a main motor; 7. a frame; 8. a movable support; 9. a conveyor belt; 10. and a limit switch.
Detailed Description
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The invention provides a deviation correcting device for transmission machinery, which detects the deviation position through a limit switch and transmits information to a system control unit, wherein the control unit forms a closed-loop control system by a series of relays, contactors and circuit protection elements, controls a low-power motor to drive a transmission unit to perform deviation correction, and when the situation that a conveying belt returns to a normal position is detected, the control unit controls the motor to reversely rotate through a time relay, so that a carrier roller also returns to the normal position, and the conveying belt is ensured to continuously and normally work. Through the unitized design, to long-time the use, have very big advantage in maintenance and functional unit upgrading.
Referring to fig. 1 and 2, the deviation correcting device for transmission machinery of the present invention includes three basic working units, namely a position detecting unit, a system control unit and a transmission executing unit, for optimizing the mechanical deviation correcting device. The position detection unit consists of limit switches 10 arranged on carrier rollers at the front end and the rear end of the conveyer belt 9, and reliably detects the position of the conveyer belt 9, which is deviated, through the closing and opening of the contacts of the limit switches 10 at different positions at the two ends of the conveyer belt 9 and transmits information to the system control unit; when the conveyer belt 9 deviates to a certain side, the conveyer belt 9 can press down the limit switches 10 arranged at the two ends of the carrier roller, the switch contact is closed, the control circuit is connected, and the transmission execution units arranged at the driving belt wheel and the driven belt wheel of the conveyer belt 9 in opposite angles start to work, so that the conveyer belt 9 moves to the opposite direction of the deviation while working, and the conveyer belt returns to the correct position.
Referring to fig. 3, the transmission execution unit includes a motor 1, a gear 2, a transmission screw 3, a universal coupling 4, a sliding rail 5, a main motor 6, a frame 7 and a movable support 8, the motor 1 is disposed on the frame 7, the motor 1 is engaged with a first gear 21 disposed at one end of the transmission screw 3 through a second gear 22, the transmission screw 3 is disposed with a movable slider, the movable slider is fixedly connected with the movable support 8, the movable support 8 is slidably connected with the frame 7 through the sliding rail 5, one end of the movable support 8 is disposed with the main motor 6, and the main motor 6 is connected with a driving pulley of the conveying belt 9 through the universal coupling 4.
The deflection action is completed by a transmission execution unit, and the specific action is as follows: the main motor 6 is connected with the driving belt wheel through the universal coupling 4, so that the conveying belt 9 can horizontally advance at a certain speed; when the conveyer belt 9 deviates left and right or is strained and deformed, limit switches SQ1 and SQ2 (or SQ3 and SQ4) arranged at two sides of the conveyer belt are triggered, at the moment, the limit switches are switched from an open state to a closed state, the limit switches play a role of position sensors and have stronger work adaptability, after the limit switches are closed, a control unit is electrified, the motor 1 is firstly controlled to start to rotate clockwise, and the rotating speed and the torque generated by the motor 1 are meshed through a pair of gears 2, so that the rotating speed is reduced, and the torque is increased.
When the motor 1 rotates clockwise, the transmission screw rod 3 rotates anticlockwise, the movable sliding block moves forwards, and as the movable support 8 and the rack 7 are in sliding connection through the sliding rail 5, when the movable sliding block moves forwards, the movable support 8 fixedly connected with the movable support also moves forwards. Because the control circuit has the existence of circular telegram time delay relay KT1, KT2 for motor 1 begins anticlockwise rotation after clockwise rotation certain time, and the same reason, movable support 8 backward motion with this is reciprocal goes on, and tight limit of conveyer belt 9 is loosened, slack side is adjusted tightly, realizes rectifying action, returns to normal position when conveyer belt 9, and limit switch disconnection, control circuit lose the electricity, and system control unit does not act on, with this realization automatic mechanical type's complete mode of action of rectifying.
Referring to fig. 4, the transmission execution unit is arranged diagonally to fig. 3, and mainly acts on one end of the driven pulley, the working principle of the transmission execution unit is the same as that of the transmission execution unit at one end of the driving pulley, the limit switches SQ3 and SQ4 control and adjust the clockwise or counterclockwise rotation of the motor 1, the torque is transmitted to the transmission screw 3 through the engagement of the pair of gears 2, and the movable slider is driven to make the movable support 8 fixedly connected with the movable slider slide back and forth, so as to realize the complete deviation rectifying action.
The system control unit comprises a central processing unit, the central processing unit is connected with the control circuit, when the conveyer belt deviates, the limit switch is in a closed state, and the central processing unit receives a signal and always keeps the deviation correcting device to work; when the conveyer belt does not deviate, the contact of the limit switch is disconnected, the central processing unit cannot receive signals, the deviation rectification is completed, the deviation rectification loop is cut off, the conveyer belt is ensured to continue to normally work, and a feedback period is completed.
The system control unit does not work when the conveying belt 9 normally works, when the information from the position detection unit is received, the control loop is switched on, the switching-off and the switching-on of the contactor are controlled through a series of relays, then the positive and negative rotation and the stop of the motor in the execution element are controlled, and finally the movement of the transmission execution unit is controlled to achieve the purpose of correcting the deviation of the conveying belt.
Referring to fig. 5, the system control unit includes a main circuit composed of a series of relays, contactors, and circuit protection devices. The three-phase circuit is firstly connected with fuse sets FU1 and FU2, fuse FU1 is connected with relays KM1 and KM2, fuse FU2 is connected with relays KM3 and KM4, a rear circuit is provided with thermal relay sets FR1 and FR2 and is finally connected with motors M1 and M2, and motors M1 and M2 are motors 1 corresponding to two transmission execution units at a driving pulley and a driven pulley.
Referring to fig. 6, the 5/12V control loop has six branches connected in parallel, specifically:
the parallel circuits of the relay KM2 switch, the time relay KT2 coil, the relay KM4 coil, the relay KM1 coil, the time relay KT2 switch, the limit switch SQ1 and the limit switch SQ2 on the first branch are sequentially connected in series.
The relay KM1 switch, the time relay KT1 coil, the relay KM2 switch and the time relay KT2 switch in the second branch are sequentially connected in series.
In the third branch, a time relay KT3 switch, a time relay KT3 coil, a parallel circuit of a time relay KT1 switch and a time relay KT2 switch, a relay KM2 coil, a relay KM3 coil and a relay KM1 switch are sequentially connected in series.
A relay KM1 switch, a time relay KT4 switch, a time relay KT4 coil, a relay KM2 coil, a relay KM3 coil, a limit switch SQ2 and a limit switch SQ3 are connected in parallel in series in sequence.
The relay KM4 switch, the time relay KT5 coil, the relay KM3 switch and the time relay KT4 switch in the fifth branch are sequentially connected in series.
In the sixth branch, a time relay KT6 switch, a time relay KT6 coil, a time relay KT4 switch, a time relay KT5 switch parallel circuit, a relay KM4 coil, a relay KM1 coil and a relay KM3 switch are sequentially connected in series.
The fuse plays a role of protecting the circuit; the limit switches SQ1 and SQ4 are two sets of limit switches mounted on one side of the conveyor belt 9, and the limit switches SQ2 and SQ3 are two sets of limit switches mounted on the other side of the conveyor belt 9. When the conveying belt 9 is not off tracking, the loop is disconnected, and the system does not work at the moment.
When the conveying belt deviates to one side, a group of limit switches (such as SQ1 or SQ2) arranged on one side of the conveying belt are pressed down, at the moment, a circuit is connected, the control relay contacts KM1 and KM4 are closed, and simultaneously, the loop is disconnected after the power-on delay time relay KT2 is used for timing, the control motor works for a period of time, the motor M1 rotates forwards and backwards in a positive rotation mode M2, the supporting rollers at two ends are biased to enable the tight edge of the conveying belt to be loosened, the loose edge to be tightened and kept for. At the moment, the electrified delay time relay KT1 works, the relays KM2 and KM3 are switched on after the delay is finished, so that the motor M1 rotates reversely and the motor M2 rotates positively, and meanwhile, the electrified delay time relay KT3 is used for timing to ensure that the supporting rollers at the two ends of the conveying belt return to the normal working position and then the circuit is switched off to finish the deviation correction of the conveying belt.
The invention only provides the design scheme, the working principle and the action mode of the transmission mechanical deviation correcting device, and does not relate to the selection of part materials and processing modes, the selection of a motor, the gear ratio, the strength check and the like according to the working uncertainty of the conveying belt in different environments. The device structural design is simple, the ageing is stronger, the precision of rectifying is higher, has reduced the actual harm that causes because of the conveyer belt takes place to squint at present to a great extent, has very big advantage in the aspect of production, use, maintenance and optimization etc. The limit switch replaces a sensor to work, so that the production cost is greatly reduced, a complete closed-loop control system can be formed, and the limit switch has higher execution capacity in practical application.
The above-mentioned contents are only for illustrating the technical idea of the present invention, and the protection scope of the present invention is not limited thereby, and any modification made on the basis of the technical idea of the present invention falls within the protection scope of the claims of the present invention.
Claims (7)
1. The utility model provides a deviation correcting device for transmission machinery, which comprises a frame (7), the both ends of frame (7) are provided with one movable support (8) respectively, be provided with the driving pulley and the driven pulley of conveyer belt (9) respectively on two movable support (8), driving pulley and driven pulley department's bearing roller both sides are provided with limit switch (10) respectively, be used for detecting the skew information of conveyer belt (9) and send system control unit, system control unit is connected with the transmission execution unit of driving pulley and driven pulley department respectively through main loop and 5/12V control loop, transmission execution unit realizes rectifying the conveyer belt through the control bearing roller removal according to the information that system control unit fed back.
2. The deviation rectifying device for transmission machinery according to claim 1, wherein the frame (7) and the movable support (8) are connected in a sliding way through a sliding rail (5).
3. The deviation correcting device for the transmission machinery according to claim 1, wherein the transmission executing unit comprises a motor (1), the motor (1) is arranged on the frame (7), the motor (1) is connected with a transmission screw (3) arranged on the frame (7) through a gear (2), a movable slider is sleeved on the transmission screw (3), and the movable slider is arranged on the movable support (8).
4. The deviation rectifying device for transmission machinery according to claim 3, wherein the gear (2) comprises a first gear (21) and a second gear (22) meshed with each other, the first gear (21) is connected with the output shaft of the motor (1), and the second gear (22) is connected with one end of the transmission screw (3).
5. The deviation rectifying device for transmission machinery according to claim 1, wherein the movable support (8) at the driving pulley is provided with a main motor (6), and the main motor (6) is connected with the driving pulley of the conveyor belt (9) through a universal coupling (4).
6. The deviation rectifying device for transmission machinery according to claim 1, wherein the transmission execution units at the driving pulley and the driven pulley are diagonally arranged on the corresponding movable support (8).
7. The deviation correcting device for the transmission machinery as claimed in claim 1, wherein the three-phase circuit of the main loop is divided into two paths, one path is connected with the 5/12V control loop, the second path is connected with the motor of the transmission execution unit at the driving pulley after passing through the fuse FU1, the relay KM1 and the thermal relay FR1, and the relay KM2 is connected in parallel at the relay KM 1; the third path is connected with a motor of a transmission execution unit at the driven pulley after passing through a fuse FU2, a relay KM3 and a thermal relay FR2, and the relay KM3 is connected in parallel with a relay KM 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911228450.5A CN110789921A (en) | 2019-12-04 | 2019-12-04 | Deviation correcting device for transmission machinery |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911228450.5A CN110789921A (en) | 2019-12-04 | 2019-12-04 | Deviation correcting device for transmission machinery |
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