Intelligent automatic start-stop lifting system

Abstract

The utility model relates to an intelligent automatic start-stop lifting system which comprises a control system, a lifting device and a granary. The control system comprises a PLC, a low-position sensor and a high-position sensor, and the low-position sensor and the high-position sensor are installed on the granary and used for sensing the height of grains in the granary and sending signals to the PLC. The PLC controls the lifting device to operate when receiving an empty grain signal and controls the lifting device to stop when receiving a full grain signal; the lifting device comprises a machine body provided with an electric gate and a lifting mechanism, the lifting mechanism comprises a closed-loop structure lifting belt driven by a motor and a plurality of winnowing pans, and grain conveying control from a material pit to a granary is achieved. The technical problems of equipment failure and production cycle delay caused by material blockage of the lifting device in the grain storage system are solved.

Description

Technical Field

[0001] The utility model relates to an intelligent automatic start-stop lifting system. Background Art

[0002] At present, domestic grain storage equipment must be matched with conveying equipment, among which lifting equipment is indispensable to the entire link. Its main purpose is to lift grain from the outside and transport it to the storage box. Because the storage equipment is large in size and high in height (generally 15-20 meters), the elevator must be 2-3 meters higher than the storage equipment to effectively transport grain into the storage box. This results in the elevator not being blocked during operation, otherwise the after-sales cost will be very high and the production cycle will be delayed. Utility Model Content

[0003] The purpose of the utility model is to solve the above deficiencies in the prior art and to provide an intelligent automatic start-stop lifting system.

[0004] An intelligent automatic start-stop lifting system includes a control system, a lifting device, and a granary. The lifting device is used to transport grain from a pit to the granary.

[0005] The control system includes a PLC controller, a low-level sensor, and a high-level sensor. The low-level sensor and the high-level sensor are installed on the granary. The low-level sensor is located below the high-level sensor. The low-level sensor and the high-level sensor are used to sense the status of the corresponding height in the granary and send signals to the PLC controller.

[0006] When the grain level in the granary is lower than the level of the high-level sensor, the high-level sensor sends a first empty grain signal. When the grain level in the granary reaches the level of the high-level sensor, the high-level sensor sends a first full grain signal. When the grain level in the granary is lower than the level of the low-level sensor, the low-level sensor sends a second empty grain signal. When the grain level in the granary reaches the level of the low-level sensor, the low-level sensor sends a second full grain signal.

[0007] When the PLC controller receives the first empty grain signal and the second empty grain signal at the same time, the PLC controller controls the lifting device to operate. When the PLC controller receives the first full grain signal and the second full grain signal at the same time, the PLC controller controls the lifting device to stop working.

[0008] Preferably, the lifting device includes a body, a feed port is provided at the lower end of the side of the body, a receiving box with a semi-enclosed structure is provided at the feed port, an opening on the side of the receiving box is connected to the feed port, an electric gate is provided at the feed port, a lifting mechanism is provided in the body, and an opening above the receiving box is connected to the material pit;

[0009] The lifting mechanism includes a first transmission wheel and a second transmission wheel. The first transmission wheel is located at the bottom of the machine body, and the second transmission wheel is located at the top of the machine body. A lifting belt with a closed-loop structure is provided between the first transmission wheel and the second transmission wheel. One end of the lifting belt is sleeved on the first transmission wheel, and the other end is sleeved on the second transmission wheel. A plurality of buckets are evenly spaced on the outer surface of the lifting belt. The first transmission wheel is connected to the motor through a coupling.

[0010] Preferably, when the PLC controller receives the first empty grain signal and the second empty grain signal at the same time, it controls the lifting mechanism to operate immediately and opens the electric gate after a predetermined delay.

[0011] Preferably, when the PLC controller receives the first full grain signal and the second full grain signal at the same time, it will control the electric gate to close immediately and stop the operation of the lifting mechanism after a predetermined delay.

[0012] Preferably, the receiving box includes a bottom plate and two side plates. The two side plates are in the shape of right triangles, the bottom plate is in the shape of a rectangle, the two sides of the bottom plate are respectively connected to the oblique sides of the two side plates, and the right-angled sides of the side plates are connected to the machine body.

[0013] Beneficial effects: Compared with the existing technology, the utility model receives different signals from sensors through a PLC controller to control the operation of the lifting mechanism and the opening and closing of the electric gate. When starting, the lifting mechanism delays for a few seconds after the electric gate opens before starting, ensuring that the grain falls into it after the lifting mechanism is put into operation as a whole; when stopping, the lifting mechanism stops a certain time after the electric gate is closed to prevent the bucket loaded with grain from rotating due to gravity after an emergency stop, causing the elevator to be blocked. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of an intelligent automatic start-stop lifting system;

[0015] Figure 2 is a schematic diagram of the lifting device;

[0016] In the figure, 1. material pit, 2. electric gate, 3. lifting device, 4. granary, 5. PLC controller, 6. high-level sensor, 7. low-level sensor, 8. material receiving box, 9. machine body, 10. first transmission wheel, 11. lifting belt, 12. bucket, 13. second transmission wheel. DETAILED DESCRIPTION

[0017] In order to deepen the understanding of the present invention, the present invention will be further described in detail below with reference to embodiments and drawings. The embodiments are only used to explain the present invention and do not constitute a limitation on the scope of protection of the present invention.

[0018] like Figure 1-2As shown, the material pit 1, the electric gate 2, the lifting device 3, the grain bin 4, the PLC controller 5, the high-level sensor 6, the low-level sensor 7, the material receiving box 8, the machine body 9, the first transmission wheel 10, the lifting belt 11, the bucket 12, and the second transmission wheel 13;

[0019] An intelligent automatic start-stop lifting system includes a control system, a lifting device 3, and a granary 4. The lifting device 3 is used to transport grain in a material pit 1 to the granary 4.

[0020] The control system includes a PLC controller 5, a low-level sensor 7, and a high-level sensor 6. The low-level sensor 7 and the high-level sensor 6 are installed on the granary 4. The low-level sensor 7 is located below the high-level sensor 6. The low-level sensor 7 and the high-level sensor 6 are used to sense the state of the corresponding height in the granary 4 and send signals to the PLC controller 5.

[0021] When the grain level in the granary 4 is lower than the level of the high-level sensor 6, the high-level sensor 6 sends a first empty grain signal. When the grain level in the granary 4 reaches the level of the high-level sensor 6, the high-level sensor 6 sends a first full grain signal. When the grain level in the granary 4 is lower than the level of the low-level sensor 7, the low-level sensor 7 sends a second empty grain signal. When the grain level in the granary 4 reaches the level of the low-level sensor 7, the low-level sensor 7 sends a second full grain signal.

[0022] When the PLC controller receives the first empty grain signal and the second empty grain signal at the same time, the PLC controller 5 controls the lifting device 3 to operate. When the PLC controller receives the first full grain signal and the second full grain signal at the same time, the PLC controller 5 controls the lifting device 3 to stop working.

[0023] In this embodiment, the lifting device 3 includes a body 9, a feed port is provided at the lower end of the side of the body 9, a receiving box 8 with a semi-enclosed structure is provided at the feed port, an opening on the side of the receiving box 8 is connected to the feed port, an electric gate 2 is provided at the feed port, a lifting mechanism is provided in the body 9, and an opening above the receiving box 8 is connected to the material pit 1;

[0024] The lifting mechanism includes a first transmission wheel 10 and a second transmission wheel 13. The first transmission wheel 10 is located at the bottom of the machine body 9, and the second transmission wheel 13 is located at the top of the machine body 9. A lifting belt 11 with a closed-loop structure is provided between the first transmission wheel 10 and the second transmission wheel 13. One end of the lifting belt 11 is sleeved on the first transmission wheel 10, and the other end is sleeved on the second transmission wheel 13. A plurality of buckets 12 are evenly spaced on the outer surface of the lifting belt 11. The first transmission wheel 10 is connected to the motor through a coupling.

[0025] In this embodiment, when the PLC controller receives the first empty grain signal and the second empty grain signal simultaneously, it controls the lifting mechanism to operate immediately and opens the electric gate 2 after a predetermined delay.

[0026] In this embodiment, when the PLC controller receives the first full grain signal and the second full grain signal at the same time, it controls the electric gate 2 to close immediately and stops the operation of the lifting mechanism after a predetermined delay.

[0027] In this embodiment, the receiving box 8 includes a bottom plate and two side plates. The two side plates are in the shape of right triangles, and the bottom plate is in the shape of a rectangle. The two sides of the bottom plate are respectively connected to the oblique sides of the two side plates, and the right-angled sides of the side plates are connected to the machine body 9.

[0028] Instructions for use: The grain is unloaded from the vehicle and directly fed into the material pit 1. At this time, the entire program can be directly started by pressing the button (on) on the PLC controller 5. If the granary 4 is in an empty state, the high-level sensor 6 and the low-level sensor 7 will simultaneously transmit the empty grain signal to the PLC controller, allowing the lifting mechanism to start operating. After a delay of 5 seconds, the electric gate 2 will open. At this time, the grain in the material pit 1 will continuously enter the granary 4 through the lifting mechanism. When the low-level sensor 7 detects the grain, the PLC controller will display that the low-level sensor 7 is full. At this time, the entire equipment system continues to work until the high-level sensor 6 detects the grain. The PLC controller 5 will immediately close the electric gate 2 and then close the lifting mechanism after a delay of 15 seconds.

[0029] The reason for the 15-second delay before closing the elevator is that the elevator mainly relies on the bucket 12 for transportation. The bucket 12 always keeps one side fully loaded and the other side empty during operation. If the bucket 12 on the load side is stopped suddenly, it will rotate and cause the elevator to become blocked. After the electric gate 2 is closed, the elevator is closed after a 15-second delay. This allows all the grain in the bucket 12 on the load side of the elevator to be transported to the steel silo, thus eliminating the elevator blockage.

[0030] The hoist belt 11 and bucket 12 are connected to form a closed annular structure using standard components. They are tensioned by the hoist's second transmission wheel 13 and the hoist's first transmission wheel 10. The motor is connected to the hoist's second transmission wheel 13 via a coupling. When energized, the motor rotates, driving the upper rollers of the hoist. The hoist's second transmission wheel 13 then drives the hoist belt 11 and bucket 12. The hoist's first transmission wheel 10 acts as a driven wheel, rotating along with the hoist belt 11. The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. An intelligent automatic start-stop lifting system, characterized in that: It includes a control system, a lifting device, and a granary. The lifting device is used to transport grain from the pit to the granary. The control system includes a PLC controller, a low-level sensor, and a high-level sensor. The low-level sensor and the high-level sensor are installed on the granary, and the low-level sensor is located below the high-level sensor. The low-level sensor and the high-level sensor are used to sense the state of the corresponding height in the granary and send signals to the PLC controller. When the grain level in the granary is lower than the level of the high-level sensor, the high-level sensor sends a first empty grain signal. When the grain level in the granary reaches the level of the high-level sensor, the high-level sensor sends a first full grain signal. When the grain level in the granary is lower than the level of the low-level sensor, the low-level sensor sends a second empty grain signal. When the grain level in the granary reaches the level of the low-level sensor, the low-level sensor sends a second full grain signal. When the PLC controller receives the first empty grain signal and the second empty grain signal at the same time, the PLC controller controls the lifting device to operate; when the PLC controller receives the first full grain signal and the second full grain signal at the same time, the PLC controller controls the lifting device to stop working; The lifting device includes a body, a feed port is provided at the lower end of the side of the body, a receiving box with a semi-enclosed structure is provided at the feed port, an opening on the side of the receiving box is connected to the feed port, an electric gate is provided at the feed port, a lifting mechanism is provided in the body, and an opening above the receiving box is connected to the material pit; The lifting mechanism includes a first transmission wheel and a second transmission wheel. The first transmission wheel is located at the bottom of the machine body, and the second transmission wheel is located at the top of the machine body. A lifting belt with a closed loop structure is provided between the first transmission wheel and the second transmission wheel. One end of the lifting belt is sleeved on the first transmission wheel, and the other end is sleeved on the second transmission wheel. A plurality of buckets are evenly spaced on the outer surface of the lifting belt. The first transmission wheel is connected to the motor through a coupling. When the PLC controller receives the first empty grain signal and the second empty grain signal at the same time, it will control the lifting mechanism to operate immediately and open the electric gate after a predetermined delay; When the PLC controller receives the first full grain signal and the second full grain signal at the same time, it will control the electric gate to close immediately and stop the lifting mechanism after a preset delay.

2. The intelligent automatic start-stop lifting system according to claim 1, characterized in that: The receiving box includes a bottom plate and two side plates. The two side plates are in the shape of right triangles, and the bottom plate is in the shape of a rectangle. The two sides of the bottom plate are respectively connected to the oblique sides of the two side plates, and the right-angled sides of the side plates are connected to the machine body.

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