Bidirectional belt conveyor anti-mixing intelligent correction device and use method of bidirectional belt conveyor anti-mixing intelligent correction device

Abstract

The invention relates to a bi-directional belt conveyor anti-mixing intelligent correcting device and a using method.The correcting device comprises a support, a roller and a rotary table, the support is fixed to a bi-directional belt conveyor, a rotating shaft capable of rotating axially is arranged in a connecting cylinder of the support, and the roller is installed at the axial end of the rotating shaft; the rotating disc is installed at the other axial end of the rotating shaft, a plurality of magnet pieces are annularly attached to the disc face, away from the rotating shaft side, of the rotating disc at equal intervals, the semicircle of one side of each magnet piece is an N pole, and the semicircle of the other side of each magnet piece is an S pole. The N poles and the S poles of every two adjacent magnet pieces are arranged close to each other, the Hall integrated sensor is arranged on the axial extension line of one magnet piece, the Hall integrated sensor and the magnet piece are spaced, and the Hall integrated sensor is connected into a control system of the bidirectional belt conveyor and can conduct steering error correction on a motor on the bidirectional belt conveyor. The correcting device can automatically achieve material mixing prevention.

Description

Technical Field

[0001] The present invention relates to the technical field of bidirectional belt conveyors, and in particular to an intelligent anti-mixing correction device for bidirectional belt conveyors, and a usage method of the intelligent correction device. Background Art

[0002] In order to improve the equipment utilization rate, a considerable part of the motors in the belt system have the function of bidirectional operation. In reality, it often occurs that the phase sequence of the motor is reversed after the motor replacement or cable replacement, resulting in the reverse operation of the motor. Therefore, after the overhaul, it is necessary to implement a human prevention measure of manually performing on-site single-motor commissioning judgment, specifically: after replacing the motor or cable, the inspection organization posts workers to conduct commissioning on-site to confirm the running direction of the motor.

[0003] However, in fact, the effectiveness of the human prevention measure only stays in theory. Due to human inertia and carelessness, there are often potential risks and hidden dangers that the motor rotation direction is not confirmed properly. For example, if the post worker is distracted during the commissioning or is interfered by other factors temporarily, it is possible to make a misjudgment. Once a misjudgment occurs, the ship unloading mode of the belt system is likely to become the direct loading mode. If it happens during the operation of the loading process at this time, it will directly trigger a mixing material accident, causing incalculable economic losses.

[0004] In addition, in daily work, many three-phase asynchronous motors used in application places only allow single-direction operation, especially the climbing belt equipment with a backstop. If the motor direction is reversed, it is bound to pose an accident risk to the equipment. At present, the method that can be adopted for similar problems is to conduct commissioning after removing the backstop or coupling to confirm the running direction of the motor. This method not only increases the commissioning workload but also prolongs the overhaul time, which is completely inconsistent with the high-efficiency operation purpose of the belt equipment. Summary of the Invention

[0005] In order to solve the above technical problems, the present invention provides an intelligent anti-mixing correction device for bidirectional belt conveyors that can automatically achieve anti-mixing.

[0006] The present invention adopts the following technical solutions:

[0007] The present invention provides an intelligent correction device for preventing material mixing in a two-way belt conveyor, which includes a bracket, a roller and a turntable. The bracket is fixed on the two-way belt conveyor. A rotating shaft capable of axial rotation is arranged in the connecting cylinder of the bracket. The roller is installed at one axial end of the rotating shaft, and the roller is located in the gap between the upper and lower belts of the two-way belt conveyor and is in contact with the surfaces of the upper and lower belts at the same time. The turntable is installed at the other axial end of the rotating shaft. A plurality of magnet sheets are circumferentially and equally spaced on the disk surface of the turntable away from the rotating shaft side. One semi-circle of each magnet sheet is an N pole and the other semi-circle is an S pole, and the N and S poles of two adjacent magnet sheets are arranged close to each other. The Hall integrated sensor is arranged on the axial extension line of a magnet sheet and is spaced from the magnet sheet. The Hall integrated sensor is connected to the control system of the two-way belt conveyor and can correct the rotation direction of the motor on the two-way belt conveyor.

[0008] Preferably, the bracket includes a first support plate which is vertically fixed on the connecting cylinder and is located at the middle position of the connecting cylinder. The bracket is fixedly connected to the two-way belt conveyor through the first support plate.

[0009] Preferably, the bracket further includes a second support plate and a protective cover. The second support plate is vertically fixed on the connecting cylinder and is close to the turntable. The protective cover is fixed on the second support plate to form a protective space. Both the turntable and the Hall integrated sensor are located in the protective space.

[0010] Preferably, a plurality of radially extending protrusions are circumferentially and equally spaced on the outer peripheral surface of the roller, and the wheel surface part of the roller is a hollow rib structure.

[0011] Preferably, one semi-circle of the magnet sheet is magnetized to form an N pole.

[0012] Preferably, the Hall integrated sensor is signal-connected to an amplifier circuit, and the amplifier circuit is signal-connected to the control system of the two-way belt conveyor.

[0013] The present invention also provides a method for using the above intelligent correction device for preventing material mixing in a two-way belt conveyor, which includes the following steps:

[0014] S1: Control the rotation of one side motor through the control system on the two-way belt conveyor;

[0015] S2: After the turntable in the intelligent correction device for preventing material mixing in the two-way belt conveyor rotates synchronously with the belt for a certain distance, the Hall integrated sensor sends the rotation direction signal of this side motor to the control system due to the magnetic field change;

[0016] S3: After the control system receives the rotation direction signal of this side motor, if the actual rotation direction of this side motor is the same as the controlled rotation direction, control the other side motor to start rotating in the same direction as this side motor. If the actual rotation direction of this side motor is contrary to the controlled rotation direction, the other side motor remains in the stopped state, and this side motor stops rotating.

[0017] Preferably, the direction recognition interlocking limit switch, the same-direction rotation contactor, and the operation feedback relay are connected in series to the same-direction rotation control circuit of the motor on the other side, and the Hall integrated sensor is connected to the direction recognition interlocking limit switch. In step S1, after the motor on this side rotates, the same-direction rotation contactor is energized and turned on.

[0018] Preferably, in step S3, if the actual rotation direction of the motor on this side is the same as the controlled rotation direction, the direction recognition interlocking limit switch and the operation feedback relay in the same-direction rotation control circuit of the motor on the other side are turned on successively.

[0019] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0020] Since the Hall sensor has the characteristic that the voltage changes with the magnetic field strength, the stronger the magnetic field, the higher the voltage, and the weaker the magnetic field, the lower the voltage. When the two-way belt conveyor anti-mixing intelligent correction device of the present invention is in use, it can first make the belt rotate a certain distance, thereby driving the turntable to rotate synchronously for a certain distance, thus realizing the movement of the magnet sheet relative to the Hall integrated sensor, and further generating a magnetic field change. The Hall integrated sensor thus detects a voltage value with positive and negative directions, and then sends this value to the control system of the two-way belt conveyor. The control system can obtain the accurate rotation direction of the motor according to the motor rotation direction corresponding to the positive and negative of the detected voltage set in advance, and when it is found that the actual rotation direction of the motor is contrary to the rotation command, control the motor to stop rotating. Thus, anti-mixing can be automatically realized.

[0021] By using the method of the two-way belt conveyor anti-mixing intelligent correction device of the present invention, automatic anti-mixing can be stably realized; at the same time, when used in a climbing belt device with a backstop, it is possible to detect whether the motor direction is reversed without releasing the backstop or coupling. If it is detected that the connection is correct, the subsequent use of the equipment can be directly carried out, which is simple and efficient and matches the high-efficiency operation purpose of the belt equipment. Description of the Drawings

[0022] Figure 1 is a schematic structural diagram of the first perspective of the two-way belt conveyor anti-mixing intelligent correction device in the embodiment of the present invention.

[0023] Figure 2 is a schematic structural diagram of the second perspective of the two-way belt conveyor anti-mixing intelligent correction device in the embodiment of the present invention.

[0024] Figure 3 is a schematic functional diagram of the control system on the two-way belt conveyor in the embodiment of the present invention.

[0025] Among them, the reference numerals are explained as follows:

[0026] 1. Bracket 2. Roller

[0027] 11. Connecting cylinder 21. Protrusion

[0028] 12. First support plate 3. Turntable

[0029] 13. Second support plate 31. Magnet sheet

[0030] 14. Protective cover 4. Hall integrated sensor Detailed implementation manners

[0031] The following further elaborates in detail the detailed implementation manners of the present invention in conjunction with the accompanying drawings. These implementation manners are only used to illustrate the present invention and are not intended to limit the present invention.

[0032] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be construed as a limitation to the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0033] In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] In addition, in the description of the present invention, unless otherwise stated, the meaning of "a plurality of" is two or more.

[0035] See Figure 1 and Figure 2, this embodiment provides an intelligent anti-mixing correction device for a two-way belt conveyor, which includes a bracket 1, a roller 2 and a turntable 3. The bracket 1 is fixed on the two-way belt conveyor. A rotating shaft capable of axial rotation is arranged in the connecting cylinder 11 of the bracket 1. The roller 2 is installed at one axial end of the rotating shaft, and the roller 2 is located in the gap between the upper and lower belts of the two-way belt conveyor and is in contact with the surfaces of the upper and lower belts at the same time. The turntable 3 is installed at the other axial end of the rotating shaft. A plurality of magnet sheets 31 are circumferentially and equally spaced on the disk surface of the turntable 3 away from the rotating shaft side. One semi-circle of each magnet sheet 31 is an N pole and the other semi-circle is an S pole, and the N and S poles of two adjacent magnet sheets 31 are arranged close to each other. The Hall integrated sensor 4 is arranged on the axial extension line of a magnet sheet 31 and is spaced from the magnet sheet 31. The Hall integrated sensor 4 is connected to the control system of the two-way belt conveyor and can correct the steering of the motor on the two-way belt conveyor.

[0036] Since the Hall sensor has the characteristic that the voltage changes with the change of the magnetic field strength, the stronger the magnetic field, the higher the voltage, and the weaker the magnetic field, the lower the voltage. When the intelligent anti-mixing correction device of the two-way belt conveyor of the present invention is in use, the belt can be rotated a certain distance first, so as to drive the turntable 3 to rotate a certain distance synchronously, thereby realizing the movement of the magnet sheet 31 relative to the Hall integrated sensor 4, and then generating a magnetic field change. The Hall integrated sensor 4 thus detects a voltage value with positive and negative directions, and then sends this value to the control system of the two-way belt conveyor. The control system can obtain the accurate steering of the motor according to the steering of the motor corresponding to the positive and negative of the detected voltage set in advance, and when it is found that the actual steering of the motor is contrary to the steering command, control the motor to stop rotating. Thus, anti-mixing can be automatically realized.

[0037] It should be noted that the Hall integrated sensor 4 in the intelligent anti-mixing correction device of the two-way belt conveyor in this embodiment needs to be adjusted to the initial position before each detection. This adjustment is realized by starting the motor of the two-way belt conveyor. The initial position is that the Hall integrated sensor 4 is located on the axial extension line of a magnet sheet 31. At this time, the magnetic field completely deviates from the Hall integrated sensor 4, and the Hall voltage of the Hall integrated sensor 4 disappears. After that, when the Hall voltage of the Hall integrated sensor 4 changes, it will be sent to the control system of the two-way belt conveyor in the form of a steering signal.

[0038] Preferably, referring to Figure 1 and Figure 2 , the bracket 1 includes a first support plate 12. The first support plate 12 is vertically fixed on the connecting cylinder 11, and the first support plate 12 is located at the middle position of the connecting cylinder 11. The bracket 1 is fixedly connected to the two-way belt conveyor through the first support plate 12.

[0039] Preferably, referring to Figure 1 and Figure 2, the support 1 further includes a second support plate 13 and a protective cover 14. The second support plate 13 is vertically fixed on the connecting cylinder 11 and is disposed close to the turntable 3. The protective cover 14 is fixed on the second support plate 13 to form a protective space, and both the turntable 3 and the Hall integrated sensor 4 are located in the protective space.

[0040] The protective cover 14 can provide protection for the magnet sheet 31 and the Hall integrated sensor 4, prevent external interference, and ensure the detection sensitivity of the Hall integrated sensor 4 in the magnetic field formed by the magnet sheet 31.

[0041] Preferably, referring to Figure 2 , in this embodiment, the Hall integrated sensor 4 is fixed on the inner wall of the protective cover 14.

[0042] Preferably, referring to Figure 1 , a plurality of radially extending protrusions 21 are circumferentially and equally spaced on the outer peripheral surface of the roller 2, and the wheel surface portion of the roller 2 is a hollow rib structure. The arrangement of the protrusions 21 can increase the friction between the outer peripheral surface of the roller 2 and the belt surface, and ensure the synchronous rotation of the roller 2 and the belt; and the wheel surface portion of the roller 2 adopts a hollow rib structure, which can reduce the weight of the roller 2 while ensuring the strength of the roller 2, facilitating the installation of the intelligent misfeeding correction device for the two-way belt conveyor on the two-way belt conveyor.

[0043] Preferably, one side of the magnet sheet 31 is semi-magnetized to form an N pole.

[0044] Preferably, the Hall integrated sensor 4 is signal-connected to an amplifier circuit, and the amplifier circuit is signal-connected to the control system of the two-way belt conveyor.

[0045] Since the Hall voltage value generated by the Hall integrated sensor 4 is very small, usually only a few millivolts, it needs to be amplified by the amplifier circuit before the Hall voltage value can be amplified to a stronger signal sufficient to be output to the control system of the two-way belt conveyor.

[0046] The intelligent misfeeding correction device for the two-way belt conveyor in this embodiment has the following beneficial effects:

[0047] (1) The improved installation of this device is portable, with a simple principle, and is applicable to mechanisms with clear requirements for single-motor two-way operation and all industries with a single motor with a backstop in a specified direction.

[0048] (2) By using the contact between the roller 2 and the belt surface, the Hall integrated sensor 4 is triggered by the roller 2 transmission to identify the direction, and a chain protection measure can be taken to avoid misfeeding and equipment damage accidents of the equipment with a backstop.

[0049] (3) The whole set of devices is very light, occupies a small space, requires a small investment, has a low cost, has a simple structure, and has a good direction correction effect.

[0050] (4) This device is ingeniously designed, with practical functions and a wide range of popularization and application.

[0051] This embodiment also provides a method for using the above-mentioned intelligent correction device for preventing material mixing in a two-way belt conveyor, including the following steps. In combination with Figures 1 to 3 :

[0052] S1: Control the rotation of one side motor through the control system on the two-way belt conveyor;

[0053] S2: After the turntable 3 in the intelligent correction device for preventing material mixing in the two-way belt conveyor rotates synchronously with the belt for a certain distance, the Hall integrated sensor 4 sends a steering signal of the motor on this side to the control system due to the magnetic field change;

[0054] S3: After the control system receives the steering signal of the motor on this side, if the actual rotation direction of the motor on this side is the same as the controlled rotation direction, then control the other side motor to start rotating in the same direction as the motor on this side. If the actual rotation direction of the motor on this side is contrary to the controlled rotation direction, then the other side motor remains in the stopped state, and the motor on this side stops rotating.

[0055] Adopting the method for using the intelligent correction device for preventing material mixing in the two-way belt conveyor of this embodiment can stably achieve automatic prevention of material mixing. At the same time, when used in a climbing belt equipment with a backstop, it can detect whether the motor direction is reversed without releasing the backstop or coupling. If it is detected that the connection is correct, the subsequent use of the equipment can be directly carried out, which is simple and efficient and matches the high-efficiency operation purpose of the belt equipment.

[0056] Preferably, the direction recognition interlock limit switch, the same-direction rotation contactor, and the operation feedback relay are connected in series to the same-direction rotation control circuit of the other side motor, and the Hall integrated sensor 4 is connected to the direction recognition interlock limit switch. In step S1, after the motor on this side rotates, the same-direction rotation contactor is energized and conducts.

[0057] Preferably, in step S3, if the actual rotation direction of the motor on this side is the same as the controlled rotation direction, then the direction recognition interlock limit switch and the operation feedback relay in the same-direction rotation control circuit of the other side motor are successively conducted.

[0058] By introducing the direction recognition interlock limit switch into the control conditions of the control system of the two-way belt conveyor, combined with the motor control mode selected by the process, an interlock protection function can be achieved. For example: assuming that the selected control mode is the ship unloading process control mode, the upstream motor of the two-way belt conveyor must be in the forward running direction to enable the downstream motor to start in the same direction. If the intelligent correction device for preventing material mixing in the two-way belt conveyor detects that the actual running direction of the upstream motor is reverse, the downstream motor will not receive a start signal, effectively preventing the occurrence of material mixing accidents caused by incorrect wiring of the upstream motor.

[0059] The intelligent correction device for preventing material mixing of the two-way belt conveyor and its usage method have been applied in the equipment management operation area of Baosteel's Majishan Port, and the usage effect is very obvious. Through this device, the labor load of employees has been significantly reduced, and the service life of the conveyor belt has been increased.

[0060] The above are only the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art of this technology, without departing from the technical principle of the present invention, several improvements and substitutions can still be made, and these improvements and substitutions should also be regarded as the protection scope of the present invention.

Claims

1. An intelligent correction device for preventing material mixing in a two-way belt conveyor, characterized in that It includes a bracket (1), a roller (2) and a turntable (3). The bracket (1) is fixed on a double-sided belt conveyor. A rotating shaft capable of axial rotation is arranged in a connecting cylinder (11) of the bracket (1). The roller (2) is installed at one axial end of the rotating shaft, and the roller (2) is located in the gap between the upper and lower belts of the double-sided belt conveyor and is in contact with the surfaces of the upper and lower belts at the same time. The turntable (3) is installed at the other axial end of the rotating shaft. A plurality of magnet sheets (31) are circumferentially and equally spaced on the disk surface of the turntable (3) away from the rotating shaft side. One semi-circle of each magnet sheet (31) is an N pole and the other semi-circle is an S pole, and the N and S poles of two adjacent magnet sheets (31) are arranged close to each other. A Hall integrated sensor (4) is arranged on the axial extension line of one magnet sheet (31) and is spaced from the magnet sheet (31). The Hall integrated sensor (4) is connected to the control system of the double-sided belt conveyor and can correct the steering of the motor on the double-sided belt conveyor.

2. The intelligent correction device for preventing material mixing of the two-way belt conveyor according to claim 1, characterized in that, The bracket (1) includes a first support plate (12). The first support plate (12) is vertically fixed on the connecting cylinder (11), and the first support plate (12) is located at the middle position of the connecting cylinder (11). The bracket (1) is fixedly connected to the double-sided belt conveyor through the first support plate (12).

3. The intelligent correction device for preventing material mixing of the two-way belt conveyor according to claim 2, characterized in that, The bracket (1) further includes a second support plate (13) and a protective cover (14). The second support plate (13) is vertically fixed on the connecting cylinder (11) and is arranged close to the turntable (3). The protective cover (14) is fixed on the second support plate (13) to form a protective space. Both the turntable (3) and the Hall integrated sensor (4) are located in the protective space.

4. The intelligent correction device for preventing material mixing of the two-way belt conveyor according to claim 1, characterized in that, A plurality of radially extending protrusions (21) are circumferentially and equally spaced on the outer peripheral surface of the roller (2), and the wheel surface part of the roller (2) is a hollow rib structure.

5. The intelligent correction device for preventing material mixing of the two-way belt conveyor according to claim 1, characterized in that, One semi-circle of the magnet sheet (31) is magnetized to form an N pole.

6. The intelligent correction device for preventing material mixing of the two-way belt conveyor according to claim 1, characterized in that The Hall integrated sensor (4) is signal-connected to an amplifier circuit, and the amplifier circuit is signal-connected to the control system of the double-sided belt conveyor.

7. The method of using the intelligent correction device for preventing material mixing of the two-way belt conveyor according to any one of claims 1-6, characterized in that, It includes the following steps: S1: Control the rotation of the motor on one side through the control system on the double-sided belt conveyor; S2: After the turntable (3) in the intelligent anti-mixing correction device of the double-sided belt conveyor rotates synchronously with the belt for a certain distance, the Hall integrated sensor (4) sends a steering signal of the motor on this side to the control system due to the magnetic field change; S3: After the control system receives the steering signal of the motor on this side, if the actual rotation direction of the motor on this side is the same as the controlled rotation direction, control the motor on the other side to start rotating in the same direction as the motor on this side. If the actual rotation direction of the motor on this side is contrary to the controlled rotation direction, the motor on the other side remains in the stop state, and the motor on this side stops rotating.

8. The usage method of the intelligent correction device for preventing material mixing of the two-way belt conveyor according to claim 7, characterized in that, The direction recognition interlocking limit switch, the same-direction rotation contactor, and the operation feedback relay are connected in series to the same-direction rotation control circuit of the motor on the other side. Moreover, the Hall integrated sensor (4) is connected to the direction recognition interlocking limit switch. In step S1, after the motor on this side rotates, the same-direction rotation contactor is energized and turned on.

9. The method for using the intelligent correction device for preventing material mixing of the two-way belt conveyor according to claim 8, characterized in that, In step S3, if the actual rotation direction of the motor on this side is the same as the controlled rotation direction, the direction recognition interlocking limit switch and the operation feedback relay in the same-direction rotation control circuit of the motor on the other side are turned on successively.

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