A material conveyor circuit and a material conveyor

Abstract

The application provides a material conveyor circuit and a material conveyor, wherein the circuit comprises: a motor provided with a main winding and an auxiliary winding; a forward rotation control module connected with the main winding and the auxiliary winding respectively; a reverse rotation control module connected with the main winding and the auxiliary winding respectively; a first capacitor and a second capacitor, the forward rotation control module is connected with the first capacitor and the second capacitor respectively, and the reverse rotation control module is connected with the first capacitor or the second capacitor. The motor corresponds to different capacitor sizes when switching to forward rotation and reverse rotation, so that the motor has sufficient capacitor size when ascending in forward rotation, which is beneficial to easier starting and more stable operation of the motor, the capacitor size is reduced when descending in reverse rotation to avoid excessive capacitor, which is beneficial to reducing energy consumption and avoiding overheating of the motor, and the difference between ascending and descending in the material transportation process is adapted.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of material conveyors, in particular to a material conveyor circuit and a material conveyor. BACKGROUND

[0002] The material conveyor is mainly used for the upward and downward transportation of materials, reduces the workload of the upward and downward transportation of goods, and is commonly used in the construction, warehousing and other industries. In the material conveyor, a single-phase motor is usually used as a power source and is matched with a capacitor for work. The single-phase motor is connected with the capacitor, and under single-phase power supply, the single-phase motor rotates forward and reversely to realize the upward and downward transportation of goods.

[0003] In the existing material conveyor, the size of the capacitor connected with the single-phase motor is constant during the working process. However, in the material conveying scene, the load is large when the goods are carried upward, and the load is light when the goods are few or no goods are carried downward under the action of gravity. That is, there are differences between the upward process and the downward process. Under the condition that the size of the capacitor connected with the single-phase motor is constant, problems such as difficult starting and unstable running of the motor caused by insufficient capacitor during upward process, or problems such as increased energy consumption and overheating of the motor caused by excessive capacitor during downward process are prone to occur. SUMMARY

[0004] The present application provides a material conveyor circuit and a material conveyor to solve the defect that the size of the capacitor connected with the motor is constant in the prior art, and the size of the capacitor cannot be changed according to the differences between upward and downward.

[0005] The present application provides a material conveyor circuit, comprising:

[0006] A motor provided with a main winding and an auxiliary winding;

[0007] A forward rotation control module connected with the main winding and the auxiliary winding respectively;

[0008] A reverse rotation control module connected with the main winding and the auxiliary winding respectively;

[0009] A first capacitor and a second capacitor, the forward rotation control module is connected with the first capacitor and the second capacitor respectively, and the reverse rotation control module is connected with the first capacitor or the second capacitor;

[0010] Wherein, the first capacitor and the second capacitor are connected in parallel by the forward rotation control module to transmit alternating current to the auxiliary winding to drive the motor to rotate forward and increase the capacitor provided to the motor;

[0011] The first capacitor or the second capacitor transmits alternating current to the auxiliary winding by the forward rotation control module to drive the motor to reverse and reduce the capacitor provided to the motor.

[0012] According to the material conveyor circuit provided by the application, the forward rotation control module comprises a first operating control, a first switch unit and a second switch unit, the first operating control is connected with the controlled end of the first switch unit and the controlled end of the second switch unit respectively, the main winding is connected with the high-voltage power supply end through the first switch unit, one end of the first capacitor is connected with the high-voltage power supply end through the first switch unit, the other end of the first capacitor is connected with the auxiliary winding, the second switch unit is connected with the first capacitor and the second capacitor respectively, and the second switch unit is closed to make the first capacitor and the second capacitor parallel.

[0013] According to the material conveyor circuit provided by the application, the forward rotation control module further comprises a delay unit, the delay unit is connected with the first operating control and the controlled end of the second switch unit respectively, and the delay unit is used to disconnect the connection between the first operating control and the controlled end of the second switch unit after energization for a preset time.

[0014] According to the material conveyor circuit provided by the application, the forward rotation control module further comprises a first limit switch, and the first operating control is connected with the controlled end of the first switch unit through the first limit switch.

[0015] According to the material conveyor circuit provided by the application, the first operating control comprises a first button, the first switch unit comprises a first contactor, the second switch unit comprises a second contactor, and the delay unit comprises a time relay, the first contactor is provided with a first contact and a second contact, one end of the first button is connected with a low-voltage power supply end, the other end of the first button is connected with one end of the first limit switch and the time relay respectively, the other end of the first limit switch is connected with the coil of the first contactor, the time relay is connected with the coil of the second contactor, the main winding is connected with the high-voltage power supply end through the first contact, one end of the first capacitor is connected with the high-voltage power supply end through the second contact, and the second capacitor is connected with the first capacitor in parallel through the contact of the second contact.

[0016] According to the material conveyor circuit provided by the application, the reverse rotation control module comprises a second operating control and a third switch unit, the second operating control is connected with the controlled end of the third switch unit, the main winding is connected with the high-voltage power supply end through the third switch unit, one end of the first capacitor is connected with the high-voltage power supply end through the third switch unit, and the other end of the first capacitor is connected with the auxiliary winding.

[0017] The reverse control module further comprises a second limit switch, and the second control element is connected with the controlled end of the third switch unit through the second limit switch.

[0018] The second control element comprises a second button, the third switch unit comprises a third contactor provided with a third contact and a fourth contact, one end of the second button is connected with a low-voltage power supply end, the other end of the second button is connected with the coil of the third contactor through the second limit switch, the main winding is connected with a high-voltage power supply end through the third contact, and one end of the first capacitor is connected with the high-voltage power supply end through the fourth contact.

[0019] The material conveying machine circuit further comprises a brake module, and the forward control module and the reverse control module are connected with the controlled end of the brake module, so that the brake module is used for limiting the rotation of the motor.

[0020] The material conveying machine circuit further comprises a brake module, and the forward control module and the reverse control module are connected with the controlled end of the brake module, so that the brake module is used for limiting the rotation of the motor.

[0021] The material conveying machine circuit and the material conveying machine provided by the application have at least the following beneficial effects: the forward control module controls the forward rotation of the motor, and corresponds to the ascending process, so that the forward control module connects the first capacitor and the second capacitor with the auxiliary winding, so that a large enough capacitor is provided for the motor during ascending. The reverse control module controls the reverse rotation of the motor, and corresponds to the descending process, so that the reverse control module connects the first capacitor or the second capacitor with the auxiliary winding, that is, only one of them is connected with the auxiliary winding, so that the size of the capacitor during descending is reduced. In this way, the motor corresponds to different capacitor sizes when switching to forward rotation and reverse rotation, so that the motor has sufficient capacitor size during forward rotation and ascending, which is beneficial to the easier starting and more stable operation of the motor, and the capacitor size is reduced during reverse rotation and descending, which avoids the too large capacitor, is beneficial to reducing energy consumption and avoiding overheating of the motor, and adapts to the difference between ascending and descending in the material conveying process. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are some embodiments of the application, and other drawings can be obtained by those skilled in the art without creative effort.

[0023] Figure 1 is one of the circuit diagrams of one of the embodiments of the material conveying machine circuit provided by the application;

[0024] Figure 2 is a circuit diagram of one embodiment of a material conveying machine circuit provided by the present application.

[0025] Reference signs:

[0026] Motor 100; forward rotation control module 200; reverse rotation control module 300; first capacitor 400; second capacitor 500; first control 210; first switch unit 220; second switch unit 230; delay unit 240; first limit switch 250; second control 310; third switch unit 320; second limit switch 330; brake module 600. DETAILED DESCRIPTION

[0027] In order to make the objects, technical solutions and advantages of the present application clearer, the technical solutions in the present application will be described clearly and completely below with reference to the drawings in the present application. Obviously, the described embodiments are some but not all of the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0028] The present application will be described below with reference to the drawings. Figure 1 and Figure 2 A material conveying machine circuit is described in the present application, comprising:

[0029] Motor 100, provided with a main winding and an auxiliary winding;

[0030] Forward rotation control module 200, connected with the main winding and the auxiliary winding respectively;

[0031] Reverse rotation control module 300, connected with the main winding and the auxiliary winding respectively;

[0032] First capacitor 400 and second capacitor 500, the forward rotation control module 200 is connected with the first capacitor 400 and the second capacitor 500 respectively, and the reverse rotation control module 300 is connected with the first capacitor 400 or the second capacitor 500;

[0033] Wherein, the first capacitor 400 and the second capacitor 500 are connected in parallel through the forward rotation control module 200 to transmit alternating current to the auxiliary winding to drive the motor to rotate forward and increase the capacitance provided to the motor;

[0034] The first capacitor 400 or the second capacitor 500 transmits alternating current to the auxiliary winding through the forward rotation control module 200 to drive the motor to rotate reversely and reduce the capacitance provided to the motor.

[0035] The forward rotation control module 200 controls the motor 100 to rotate forward, corresponding to the upward process, the forward rotation control module 200 connects the first capacitor 400 and the second capacitor 500 with the auxiliary winding, so as to provide a large enough capacitor to the motor 100 during the upward process. The reverse rotation control module 300 controls the motor to rotate reversely, corresponding to the downward process, the reverse rotation control module 300 connects the first capacitor 400 or the second capacitor 500 with the auxiliary winding, that is, only one of them is connected with the auxiliary winding, so as to reduce the size of the capacitor during the downward process. In this way, the motor 100 corresponds to different capacitor sizes when switching to forward rotation and reverse rotation, so that the motor 100 has sufficient capacitor size during the forward rotation and upward process, which is beneficial to the motor 100 to start more easily and run more stably, and the size of the capacitor is reduced during the reverse rotation and downward process to avoid the capacitor being too large, which is beneficial to reduce the energy consumption and avoid the motor overheating, and adapt to the difference between the upward process and the downward process in the material transportation process.

[0036] The motor 100 is usually a single-phase motor, which works based on a single-phase alternating current power supply. The main winding receives alternating current from the power supply to generate a magnetic field. However, since the single-phase power supply only provides one phase of current, the main winding alone cannot generate a magnetic field that rotates all the time. Therefore, the single-phase motor is provided with an auxiliary winding connected with a capacitor. The alternating current generated by the alternating current power supply is transmitted to the auxiliary winding after generating a phase difference through the capacitor. The magnetic field generated by the auxiliary winding cooperates with the magnetic field generated by the main winding to form a rotating magnetic field, which in turn drives the rotor to rotate.

[0037] Reference Figure 1 and Figure 2 The forward rotation control module 200 and the reverse rotation control module 300 control the motor 100 to rotate forward and reversely, which can be realized by reversing the power line of the alternating current power supply. Taking the alternating current power supply as a city power supply as an example, it includes a live wire L and a neutral wire N. For convenience of description, one end of the main winding is called U1 end, and the other end of the main winding is called U2 end. When the forward rotation control module 200 controls the motor 100 to rotate forward, the live wire L is connected with the U1 end of the main winding, and the neutral wire N is connected with the U2 end of the main winding. When the reverse rotation control module 300 controls the motor 100 to rotate reversely, the live wire L is connected with the U2 end of the main winding, and the neutral wire N is connected with the U1 end of the main winding.

[0038] Reference Figure 1 and Figure 2In some embodiments of the material conveyor circuit, the forward rotation control module 200 comprises a first control element 210, a first switch unit 220, and a second switch unit 230. The first control element 210 is connected to the control end of the first switch unit 220 and the control end of the second switch unit 230, respectively. The main winding is connected to the high-voltage power supply end through the first switch unit 220. One end of the first capacitor 400 is connected to the high-voltage power supply end through the first switch unit 220, and the other end of the first capacitor 400 is connected to the auxiliary winding. The second switch unit 230 is connected to the first capacitor 400 and the second capacitor 500, respectively. The second switch unit 230 is closed to connect the first capacitor 400 and the second capacitor 500 in parallel.

[0039] The user can operate the first control element 210 to close or open the first switch unit 220 and the second switch unit 230. When the first switch unit 220 and the second switch unit 230 are closed, the high-voltage power supply end outputs an alternating current to the main winding and the first capacitor 400 through the first switch unit 220. The second capacitor 500 is connected to the first capacitor 400 in parallel through the second switch unit 230, thereby increasing the overall capacitance. The alternating current is transmitted to the auxiliary winding after passing through the first capacitor 400 and the second capacitor 500 connected in parallel. The magnetic field generated by the main winding and the auxiliary winding drives the rotor to rotate forward. In this way, the first control element 210, the first switch unit 220, and the second switch unit 230 are used to control the forward rotation of the motor 100. After the first capacitor 400 and the second capacitor 500 are connected in parallel, the motor 100 is connected without program logic control, which is simple, reliable, and easy to implement.

[0040] Reference Figure 1 and Figure 2 In some embodiments of the material conveyor circuit, the forward rotation control module 200 further comprises a delay unit 240. The delay unit 240 is connected to the first control element 210 and the control end of the second switch unit 230, respectively. The delay unit 240 is used to disconnect the first control element 210 and the control end of the second switch unit 230 after a preset time of power supply.

[0041] The motor 100 has a large load in the forward rotation, and a large torque is required at the start, which corresponds to a large capacity. After the start to overcome the static inertia of the rotor, the torque required to maintain the rotation of the rotor is not as large as that at the start, and the capacity can be appropriately reduced. Therefore, by providing the delay unit 240, after the user operates the first control 210 to close the second switch unit 230, the delay unit 240 is disconnected after a predetermined time, so that the controlled end of the second switch unit 230 loses power, and the second switch unit 230 is also disconnected, and then the second capacitor 500 and the first capacitor 400 are disconnected in parallel, so that the capacity connected to the sub-coil is reduced, which is beneficial to improve the power factor, reduce the loss, and prevent the motor 100 from overheating.

[0042] Reference Figure 1 and Figure 2 In some embodiments of the material conveying machine circuit of the present application, the forward rotation control module 200 further comprises a first limit switch 250, and the first control 210 is connected to the controlled end of the first switch unit 220 through the first limit switch 250.

[0043] Because there is an upper limit position in the ascending stroke during the material transportation process, in order to avoid driving the motor 100 to rotate when reaching the upper limit position, by providing the first limit switch 250, the first control 210 is connected to the controlled end of the first switch unit 220 through the first limit switch 250, and the first limit switch 250 is triggered to be disconnected when the ascending reaches the upper limit position, so that the controlled end of the first switch unit 220 loses power, and then the first switch unit 220 becomes a disconnected state, and then the driving of the motor 100 in the forward rotation is stopped. In this way, when ascending to the upper limit position, the motor 100 can be automatically stopped to continue driving in the forward rotation, which is beneficial to avoid the motor 100 from being burned due to the excessive current caused by the inability to rotate, and to improve the safety and reliability.

[0044] Reference Figure 1 and Figure 2In some embodiments of the material conveying machine circuit of the present application, the first control 210 comprises a first button, the first switch unit 220 comprises a first contactor KM2, the second switch unit 230 comprises a second contactor KM4, and the delay unit 240 comprises a time relay. The first contactor KM2 is provided with a first contact and a second contact. One end of the first button is connected to a low-voltage power supply end, and the other end of the first button is connected to one end of the first limit switch 250 and the time relay, respectively. The other end of the first limit switch 250 is connected to the coil of the first contactor KM2. The time relay is connected to the coil of the second contactor KM4. The main winding is connected to a high-voltage power supply end through the first contact. One end of the first capacitor 400 is connected to the high-voltage power supply end through the second contact. The second capacitor 500 is connected in parallel with the first capacitor 400 through the contact of the second contactor KM4.

[0045] When the user presses the first button, the coil of the first contactor KM2 is powered from the low-voltage power supply end through the first limit switch 250, the coil of the second contactor KM4 is powered from the low-voltage power supply end through the time relay, the first contact and the second contact of the first contactor KM2 are closed, the main winding of the motor 100 is powered from the high-voltage power supply end through the first contact, the auxiliary winding is powered from the high-voltage power supply end through the first capacitor 400 and the second contact, the contact of the second contactor KM4 is closed, and the second capacitor 500 is connected in parallel with the first capacitor 400, thereby driving the motor 100 to rotate forward and connecting the second capacitor 500 in parallel with the first capacitor 400, and providing sufficient capacitance for the motor 100 during forward rotation.

[0046] After the preset time of the time relay, the time relay opens the coil of the second contactor KM4 to lose power, the contact of the second contactor KM4 is opened, and the parallel connection of the second capacitor 500 and the first capacitor 400 is disconnected. The motor 100 continues to rotate forward until the user releases the first button or the first limit switch 250 triggers to disconnect, the coil of the first contactor KM2 loses power, the first contact and the second contact are disconnected, and the motor 100 loses power and stops rotating forward.

[0047] The structure of the first contactor KM2 and the second contactor KM4 has the advantages of high current-carrying capacity and reliable and frequent switching, and is suitable for the use environment of material transportation. At the same time, the first contactor KM2 and the second contactor KM4 allow the user to control the high-voltage environment in a low-voltage environment, which is beneficial to improve the safety of user control.

[0048] The preset time of the time relay can be set according to the actual application scenario.

[0049] Reference Figure 1 and Figure 2In some embodiments of the material conveyor circuit of the present application, the reverse control module 300 comprises a second operating control 310 and a third switch unit 320, the second operating control 310 is connected to the controlled end of the third switch unit 320, the main winding is connected to the high-voltage power supply end through the third switch unit 320, one end of the first capacitor 400 is connected to the high-voltage power supply end through the third switch unit 320, and the other end of the first capacitor 400 is connected to the auxiliary winding.

[0050] The user can make the third switch unit 320 close or open by operating the second operating control 310. When the third switch unit 320 is closed, the high-voltage power supply end outputs alternating current to the main winding and the first capacitor 400 through the third switch unit 320. The alternating current is transmitted to the auxiliary winding through the first capacitor 400, and the magnetic field generated by the main winding and the auxiliary winding drives the rotor to reverse. In this way, through the structure of the second operating control 310 and the third switch unit 320, the motor 100 is controlled to reverse and the first capacitor 400 is connected to the motor 100, without program logic control, the structure is simple, reliable and easy to implement.

[0051] Reference Figure 1 And Figure 2 In some embodiments of the material conveyor circuit of the present application, the reverse control module 300 further comprises a second limit switch 330, and the second operating control 310 is connected to the controlled end of the third switch unit 320 through the second limit switch 330.

[0052] During the material transportation process, there is a lower limit position during the downward process. In order to avoid driving the motor 100 to reverse when reaching the lower limit position, the second limit switch 330 is provided, the second operating control 310 is connected to the controlled end of the third switch unit 320 through the second limit switch 330, so that when the second limit switch 330 is triggered to be disconnected when descending to the lower limit position, the controlled end of the third switch unit 320 loses power, the third switch unit 320 becomes an open state, and the driving of the motor 100 to reverse is stopped. In this way, when descending to the lower limit position, the motor 100 can be automatically stopped to continue to drive the motor 100 to reverse, which is beneficial to avoid the motor 100 from being unable to rotate to cause excessive current and burn out, thereby improving safety and reliability.

[0053] The first limit switch 250 and the second limit switch 330 can be contact limit switches. When the motor 100 drives the object such as the object plate to rise and descend, the object plate touches the contact limit switch when reaching the upper limit position and the lower limit position, so that the contact limit switch is disconnected. The first limit switch 250 and the second limit switch 330 can also be non-contact limit switches, such as detecting the position of the object by infrared rays, ultrasonic waves, etc. When the object plate reaches the upper limit position and the lower limit position, the non-contact limit switch is disconnected.

[0054] Reference Figure 1 and Figure 2 In some embodiments of the material conveyor circuit of the present application, the second control 310 comprises a second button, the third switch unit 320 comprises a third contactor KM3, the third contactor KM3 is provided with a third contact and a fourth contact, one end of the second button is connected with the low-voltage power supply end, the other end of the second button is connected with the coil of the third contactor KM3 through the second limit switch 330, the main winding is connected with the high-voltage power supply end through the third contact, and one end of the first capacitor 400 is connected with the high-voltage power supply end through the fourth contact.

[0055] When the user presses the second button, the coil of the third contactor KM3 is powered from the low-voltage power supply end through the second limit switch 330, the third contact and the fourth contact of the third contactor KM3 are closed, the main winding of the motor 100 is powered from the high-voltage power supply end through the third contact, and the auxiliary winding is powered from the high-voltage power supply end through the first capacitor 400 and the fourth contact, so as to achieve the effect of driving the motor 100 to reverse and connecting the first capacitor 400 with the motor 100, and avoiding that the capacitor connected with the motor 100 is too large during the reversing.

[0056] After the user releases the second button or the second limit switch 330 triggers the disconnection, the coil of the third trigger loses power, the third contact and the fourth contact are disconnected, and the motor 100 loses power and stops reversing. The structure of the third contactor KM3 has the advantages of high current-carrying capacity and reliable and frequent switching, and is suitable for the use environment of material transportation. At the same time, the third contactor KM3 allows the user to control the high-voltage environment in the low-voltage environment, which is beneficial to improve the safety of user control.

[0057] The low-voltage power supply end connected with the first control 210 and the second control 310 is low-voltage direct current power supply, and the high-voltage power supply end connected with the main winding of the motor 100 is high-voltage alternating current power supply. It can be understood that the low-voltage and the high-voltage are relative, mainly to show that the voltage for driving the motor 100 to rotate is greater than the voltage of the first control 210 and the second control 310, so as to achieve the effect of low-voltage control high-voltage and protect the user.

[0058] In addition to the embodiment of the button, the first control 210 and the second control 310 can also be the embodiment of a switching switch and the like. In some embodiments of the present application, the first control 210 and the second control 310 can also be the same device, such as a three-position switch and the like.

[0059] The first switch unit 220, the second switch unit 230 and the third switch unit 320 can be the implementation including the power switch tube, and the controlled end voltage of the power switch tube is controlled through the first control 210 and the second control 310, so as to control the conduction and cut-off of the power switch tube, and the function of the switch is realized.

[0060] With reference to Figure 1 In some embodiments of the material conveyor circuit, a brake module 600 is further included, and the forward rotation control module 200 and the reverse rotation control module 300 are connected with the controlled end of the brake module 600, and the brake module 600 is used for limiting the rotation of the motor 100.

[0061] By arranging the brake module 600, when the forward rotation control module 200 and the reverse rotation control module 300 stop driving the motor 100 to rotate forward and reverse, the brake module 600 limits the rotation of the motor 100, which is beneficial to make the motor 100 stop rotating faster, and is beneficial to make the goods maintain at the required position, avoid the goods moving due to the rotation of the motor, and improve the safety and reliability.

[0062] The brake module 600 can be the implementation including the motor brake, the brake rectifier and the like.

[0063] With reference to Figure 1 And Figure 2 The first contactor KM2 is provided with a fifth contact, the third contactor KM3 is provided with a sixth contact, and the fifth contact and the sixth contact are connected with the controlled end of the brake module 600.

[0064] When the first contactor KM2 and the third contactor KM3 are powered, the fifth contact or the sixth contact is closed, the brake module 600 does not work, and the motor 100 can rotate. When the first contactor KM2 and the third contactor KM3 are both powered off, the fifth contact and the sixth contact are both disconnected, the brake module works, and the rotation of the motor 100 is limited.

[0065] With reference to Figure 2 In some embodiments of the material conveyor circuit, a plug Q1-1, a plug Q1-2, a plug Q2-1 and a plug Q2-2 are further included, the first button is connected with the first limit switch 250 through the plug Q1-1 and the plug Q2-1, the first limit switch 250 is connected with the first contactor KM2 through the plug Q2-2, and the second button is connected with the second limit switch 330 through the plug Q1-2.

[0066] The application further provides a material conveyor, which comprises a machine body, and the machine body is provided with the material conveyor circuit. The application further provides a material conveyor, which comprises a machine body, and the machine body is provided with the material conveyor circuit.

[0067] The material conveying machine is connected with objects such as a carrier plate. The motor 100 drives the carrier plate to rise and fall in forward rotation and reverse rotation, achieving the effect of material conveying. In this process, the forward rotation control module 200 controls the forward rotation of the motor 100. The forward rotation control module 200 connects the first capacitor 400 and the second capacitor 500 with the auxiliary winding, so as to provide a large enough capacitor to the motor 100 when rising. The reverse rotation control module 300 controls the reverse rotation of the motor. The reverse rotation control module 300 connects the first capacitor 400 or the second capacitor 500 with the auxiliary winding, that is, only one of them is connected with the auxiliary winding, reducing the size of the capacitor when falling. In this way, the motor 100 corresponds to different capacitor sizes when switching to forward rotation and reverse rotation, so that the motor 100 has sufficient capacitor size when rising in forward rotation, which is beneficial to the easier starting and more stable operation of the motor 100. When falling in reverse rotation, the capacitor size is reduced to avoid excessive capacitor, which is beneficial to reduce energy consumption and avoid motor overheating, and adapt to the difference between rising and falling in the material transportation process.

[0068] In the construction industry, the machine body is generally installed on the top of the building. In some embodiments of the present application, the control box can also be controlled. The first control 210 and the second control 310 are arranged in the control box. The control box is installed at the bottom of the building, which can facilitate the control of the motor 100 in forward rotation and reverse rotation under the building, and realize the control of material transportation.

[0069] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A material conveyor circuit, characterized in that, include: The motor (100) is equipped with a main winding and an auxiliary winding; A forward rotation control module (200) is connected to the main winding and the auxiliary winding respectively; A reversal control module (300) is connected to the main winding and the auxiliary winding respectively; The first capacitor (400) and the second capacitor (500) are connected, and the forward rotation control module (200) is connected to the first capacitor (400) and the second capacitor (500) respectively. The reverse rotation control module (300) is connected to either the first capacitor (400) or the second capacitor (500). The forward rotation control module (200) connects the first capacitor (400) and the second capacitor (500) in parallel to transmit AC current to the auxiliary winding to drive the motor to rotate forward and increase the capacitance supplied to the motor. The forward rotation control module (200) causes the first capacitor (400) or the second capacitor (500) to transmit AC current to the auxiliary winding, thereby driving the motor to reverse and reducing the capacitance supplied to the motor. The forward rotation control module (200) includes a first control element (210), a first switching unit (220), and a second switching unit (230). The first control element (210) is connected to the controlled terminal of the first switching unit (220) and the controlled terminal of the second switching unit (230), respectively. The main winding is connected to the high-voltage power supply terminal through the first switching unit (220). One end of the first capacitor (400) is connected to the high-voltage power supply terminal through the first switching unit (220), and the other end of the first capacitor (400) is connected to the auxiliary winding. The second switching unit (230) is connected to the first capacitor (400) and the second capacitor (500), respectively. When the second switching unit (230) is closed, the first capacitor (400) and the second capacitor (500) are connected in parallel. The reversal control module (300) includes a second control element (310) and a third switch unit (320). The second control element (310) is connected to the controlled terminal of the third switch unit (320). The main winding is connected to the high-voltage power supply terminal through the third switch unit (320). One end of the first capacitor (400) is connected to the high-voltage power supply terminal through the third switch unit (320), and the other end of the first capacitor (400) is connected to the auxiliary winding.

2. The material conveyor circuit according to claim 1, characterized in that: The forward rotation control module (200) further includes a delay unit (240), which is connected to the controlled terminals of the first control unit (210) and the second switch unit (230) respectively. The delay unit (240) is used to disconnect the connection between the first control unit (210) and the controlled terminal of the second switch unit (230) after a preset power-on time.

3. The material conveyor circuit according to claim 2, characterized in that: The forward rotation control module (200) also includes a first limit switch (250), and the first control element (210) is connected to the controlled end of the first switch unit (220) through the first limit switch (250).

4. The material conveyor circuit according to claim 3, characterized in that: The first control unit (210) includes a first button, the first switch unit (220) includes a first contactor, the second switch unit (230) includes a second contactor, the delay unit (240) includes a time relay, the first contactor is provided with a first contact and a second contact, one end of the first button is connected to the low-voltage power supply terminal, the other end of the first button is connected to one end of the first limit switch (250) and the time relay respectively, the other end of the first limit switch (250) is connected to the coil of the first contactor, the time relay is connected to the coil of the second contactor, the main winding is connected to the high-voltage power supply terminal through the first contact, one end of the first capacitor (400) is connected to the high-voltage power supply terminal through the second contact, and the second capacitor (500) is connected in parallel with the first capacitor (400) through the contact of the second contactor.

5. A material conveyor circuit according to claim 1, characterized in that: The reversal control module (300) further includes a second limit switch (330), and the second control element (310) is connected to the controlled end of the third switch unit (320) through the second limit switch (330).

6. A material conveyor circuit according to claim 5, characterized in that: The second control unit (310) includes a second button, the third switch unit (320) includes a third contactor, the third contactor is provided with a third contact and a fourth contact, one end of the second button is connected to the low-voltage power supply terminal, the other end of the second button is connected to the coil of the third contactor through the second limit switch (330), the main winding is connected to the high-voltage power supply terminal through the third contact, and one end of the first capacitor (400) is connected to the high-voltage power supply terminal through the fourth contact.

7. A material conveyor circuit according to claim 1, characterized in that: It also includes a braking module (600), the forward rotation control module (200) and the reverse rotation control module (300) are both connected to the controlled end of the braking module (600), and the braking module (600) is used to limit the rotation of the motor (100).

8. A material conveyor, characterized in that: It includes a body on which a material conveyor circuit as described in any one of claims 1 to 7 is provided.

Images