A vibrating frequency adjustable harvester cleaning screen device

Abstract

The utility model relates to the technical field of harvester, concretely relates to a kind of vibration frequency adjustable harvester cleaning screen device, comprising: main frame and multiple screen nets in the multiple screen nets of main frame;Two groups of connecting seats are located below main frame, and lifting mechanism is equipped in the connecting seat;Two fixed rods are located on lifting mechanism;Two groups of connecting plates are fixedly installed in the side surface of main frame, and the connecting plate is slidably connected with fixed rod.The utility model is driven by electric push rod to make the connecting plate extrude by extrusion plate down, make the connecting plate down compression vibration spring, make vibration spring be in tight state and reduce its range of activity, at this time, vibration amplitude is small and vibration frequency is high, conversely, by electric push rod to make the connecting plate extrude by extrusion plate up, make vibration spring be in relatively relaxed state and increase its range of activity, at this time, vibration amplitude is large and frequency is low, so as to realize the effect of screen device vibration frequency regulation, effectively improve the use flexibility and work efficiency of screen device.

Description

Technical Field

[0001] This utility model relates to the field of harvester technology, specifically to a harvester cleaning screen device with adjustable vibration frequency. Background Technology

[0002] A combine harvester is an integrated machine for harvesting crops, completing the harvesting and threshing process in one go, collecting the grains in a storage bin, and then transporting the grain to a transport vehicle via a conveyor belt. Manual harvesting is also possible, where the stalks of crops such as rice and wheat are laid out in the field, and then the grain harvesting machinery collects and threshes them. It is a crop harvesting machine that harvests the grains and stalks of cereal crops such as rice and wheat.

[0003] In the prior art, utility model patent CN219761960U discloses a harvester and its vibrating screen device and screen device. Its background art addresses the problem that "during high-load harvesting, the overall stability and elasticity of the screen are not ideal." To address this, the technical solution is "including a screen body, divided into several screen units arranged in a repeating pattern along the screen plane. Each screen unit contains several sequentially connected unit mesh edges to form a unit screen hole," etc.

[0004] However, the following problems were found in the implementation of the above technical solutions: the existing harvester screen devices are usually inconvenient to adjust the vibration frequency during use, and have low applicability. When different vibration frequencies are required for screening, the screen device or vibration components need to be replaced, resulting in high usage costs and reduced flexibility and efficiency of the screen device. Utility Model Content

[0005] The purpose of this invention is to provide a harvester cleaning screen device with adjustable vibration frequency to solve the above-mentioned technical problems.

[0006] The technical solution of this utility model is as follows: a harvester cleaning screen device with adjustable vibration frequency, comprising: a main frame and multiple screens disposed within the main frame; Two sets of connecting seats are located below the main frame, and each connecting seat is equipped with a lifting mechanism. Two fixed rods are installed on the lifting mechanism; Two sets of connecting plates are fixedly installed on both sides of the main frame, and the connecting plates are slidably connected to the fixing rod; A vibration spring is sleeved on the surface of a fixed rod, and a vibration element is provided on the main frame; A mounting plate that is fixedly connected to the top of the fixing rod; An electric push rod that is fixedly installed on the top of the mounting plate and whose output end moves through the mounting plate; And an extrusion plate that is fixedly connected to the output end of the electric push rod and slides with the fixed rod.

[0007] Preferably, a bumper block is fixedly installed at the bottom of the extrusion plate, and the bumper block is made of rubber.

[0008] Preferably, the vibrating component includes a vibrating motor fixedly installed on both sides of the main frame.

[0009] Preferably, the lifting mechanism includes a support block fixedly installed on one side of the inner wall of the connecting seat, a hydraulic cylinder fixedly installed on the top of the support block, and a support plate fixedly connected to the output end of the hydraulic cylinder. The fixing rod is fixedly installed on the top of the support plate, and the two ends of the vibration spring are respectively connected to the support plate and the connecting plate.

[0010] Preferably, a reinforcing beam is fixedly installed between the opposite faces of each set of connecting seats, and multiple reinforcing pipes are fixedly installed between the two sides of the inner wall of the main frame.

[0011] Preferably, a guide plate is fixedly installed between the inner walls of one end of the main frame, and a fixing mechanism for installing the screen is provided inside the main frame.

[0012] Preferably, the fixing mechanism includes an inverted plate fixedly installed on both sides of the inner wall of the main frame, a guide rod fixedly installed on the top of one end of the inverted plate, a slot formed on the bottom inner wall of one end of the inverted plate, a permanent magnet installed inside the slot, a T-shaped block slidably connected to the surface of the guide rod and penetrating the inverted plate to engage with the slot, a limiting block fixedly connected to the top of the guide rod, and a reset spring sleeved on the surface of the guide rod and connected at both ends to the T-shaped block and the limiting block respectively. The screen is slidably connected inside the inverted plate, and the T-shaped block is magnetically connected to the permanent magnet.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: When it is necessary to adjust the vibration frequency, the electric push rod drives the pressing plate to move down and press the connecting plate, causing the connecting plate to move down and compress the vibration spring, so that the vibration spring is in a taut state and its range of motion is reduced. At this time, the vibration amplitude is small and the vibration frequency is high. Conversely, the electric push rod drives the pressing plate to move up and makes the vibration spring in a more relaxed state and its range of motion is increased. At this time, the vibration amplitude is large and the frequency is low. Therefore, the vibration frequency of the screen device can be adjusted, avoiding the need to replace the device or vibration component to adjust the vibration frequency, reducing the cost of use, and effectively improving the flexibility and efficiency of the screen device. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall three-dimensional structure of this utility model; Figure 2 This is a cross-sectional three-dimensional structural diagram of the present invention; Figure 3 This is a partial three-dimensional structural diagram of the connecting seat in this utility model; Figure 4 This is a partial three-dimensional structural diagram of the C-shaped plate in this utility model.

[0015] In the diagram: 1. Main frame; 2. Screen; 3. Connecting seat; 4. Fixing rod; 5. Connecting plate; 6. Vibration spring; 7. Mounting plate; 8. Electric push rod; 9. Extrusion plate; 10. Anti-collision block; 11. Vibration motor; 12. Support block; 13. Hydraulic cylinder; 14. Support plate; 15. Reinforcing beam; 16. Reinforcing pipe; 17. C-shaped plate; 18. T-shaped block; 19. Guide rod; 20. Limiting block; 21. Return spring; 22. Guide plate. Detailed Implementation

[0016] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this utility model.

[0017] Please see Figure 1 - Figure 4 The present invention proposes a harvester cleaning screen device with adjustable vibration frequency, comprising: a main frame 1 and a plurality of screens 2 disposed within the main frame 1; Two sets of connecting seats 3 are located below the main frame 1, and a lifting mechanism is provided inside the connecting seats 3; Two fixed rods 4 are installed on the lifting mechanism; Two sets of connecting plates 5 are fixedly installed on both sides of the main frame 1, and the connecting plates 5 are slidably connected to the fixing rods 4; A vibration spring 6 is fitted onto the surface of the fixed rod 4, and a vibration element is provided on the main frame 1; Mounting plate 7 is fixedly connected to the top of the fixing rod 4; An electric push rod 8 is fixedly installed on the top of the mounting plate 7 and its output end moves through the mounting plate 7; And a compression plate 9 fixedly connected to the output end of the electric push rod 8 and sliding with the fixed rod 4. A bumper block 10 is fixedly installed at the bottom of the compression plate 9. The bumper block 10 is made of rubber.

[0018] Furthermore, the vibrating component includes a vibration motor 11 fixedly installed on both sides of the main frame 1. By setting the vibration motor 11, it is convenient to vibrate the main frame 1 and transmit the vibration force acting on the main frame 1 to the screen 2 for vibration screening.

[0019] Furthermore, the lifting mechanism includes a support block 12 fixedly installed on one side of the inner wall of the connecting seat 3, a hydraulic cylinder 13 fixedly installed on the top of the support block 12, and a support plate 14 fixedly connected to the output end of the hydraulic cylinder 13. A fixing rod 4 is fixedly installed on the top of the support plate 14, and the two ends of the vibration spring 6 are respectively connected to the support plate 14 and the connecting plate 5. The hydraulic cylinder 13 drives the support plate 14 to move upward, and the support plate 14 simultaneously drives the fixing rod 4 to move upward, thereby driving the main frame 1 to move upward as a whole, which facilitates the adjustment of the working height position of the main frame 1 according to the usage requirements.

[0020] Furthermore, a reinforcing beam 15 is fixedly installed between the opposite faces of each set of connecting seats 3, and multiple reinforcing pipes 16 are fixedly installed between the two sides of the inner wall of the main frame 1. The reinforcing pipes 16 are installed at key stress-bearing parts of the inner wall of the main frame 1. By setting the reinforcing beams 15, the strength between each set of connecting seats 3 is enhanced, and by setting the reinforcing pipes 16, the overall strength of the main frame 1 is improved.

[0021] Furthermore, a guide plate 22 is fixedly installed between the inner walls of one end of the main frame 1. By setting the guide plate 22, it is convenient to guide the material screened by the screen 2 to be discharged from the main frame 1.

[0022] Furthermore, the main frame 1 is provided with a fixing mechanism for installing the screen 2 inside. The fixing mechanism includes an inverted plate 17 fixedly installed on both sides of the inner wall of the main frame 1, a guide rod 19 fixedly installed on the top of one end of the inverted plate 17, a slot opened in the inner bottom wall of one end of the inverted plate 17, a permanent magnet installed inside the slot, a T-shaped block 18 slidably connected to the surface of the guide rod 19 and passing through the inverted plate 17 and engaging with the slot, a limiting block 20 fixedly connected to the top of the guide rod 19, and a return spring 21 sleeved on the surface of the guide rod 19 and connected at both ends to the T-shaped block 18 and the limiting block 20 respectively. The screen 2 is slidably connected inside the inverted plate 17, and the T-shaped block 18 is magnetically connected to the permanent magnet. The T-shaped block 18 is made of a magnetically conductive material. When installing the screen 2, the T-shaped block 18 is moved upward to separate from the permanent magnet, and the T-shaped block 18 slides along the surface of the guide rod 19 to cooperate with the limiting block 20 to press the return spring 21, thereby opening the port of the convex plate 17. Then, the screen 2 is moved and slid into the convex plate 17. After installation, the T-shaped block 18 is released and driven by the return spring 21 to move downward to reset and insert into the convex plate 17 and engage with the slot. It is magnetically attracted to the permanent magnet in the slot, thereby sealing and fixing the port of the convex plate 17 and fixing the screen 2. Conversely, when disassembling, the T-shaped block 18 is simply moved upward to overcome the magnetic force of the permanent magnet, so that the port of the convex plate 17 can be opened and the screen 2 can be pulled out. This facilitates the disassembly and assembly of the screen 2 for maintenance and improves the ease of use.

[0023] The working principle of the harvester cleaning screen device with adjustable vibration frequency described in this embodiment is as follows: During use, the main frame 1 is easily installed on the harvester via the connecting seat 3. By operating the vibrating component, the main frame 1, via the connecting plate 5, drives the screen 2 to move up and down along the surface of the fixed rod 4. Combined with the elastic force of the vibration spring 6, the screen 2 can vibrate and screen the harvested crops. The anti-collision block 10 is installed to buffer the impact force of the collision between the extrusion plate 9 and the connecting plate 5 during the vibration screening process. When it is necessary to adjust the vibration frequency, the electric push rod 8 drives the extrusion plate 9 to move down along the surface of the fixed rod 4. The connecting plate 5 is pressed by the anti-collision block 10, causing the connecting plate 5 to move downward along the surface of the fixed rod 4 and compress the vibration spring 6. This puts the vibration spring 6 in a taut state, reducing its range of motion. At this time, the vibration amplitude is small and the vibration frequency is high. Conversely, the electric push rod 8 drives the pressing plate 9 to move upward, putting the vibration spring 6 in a more relaxed state and increasing its range of motion. At this time, the vibration amplitude is large and the frequency is low. Therefore, the vibration frequency of the screen device is adjusted, avoiding the need to replace the device or vibration components to adjust the vibration frequency, reducing the cost of use, and effectively improving the flexibility and efficiency of the screen device.

[0024] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A harvester cleaning screen device with adjustable vibration frequency, characterized in that: include: The main frame (1) and multiple screens (2) set in the main frame (1); Two sets of connecting seats (3) are provided below the main frame (1), and the connecting seats (3) are provided with a lifting mechanism; Two fixed rods (4) are installed on the lifting mechanism; Two sets of connecting plates (5) are fixedly installed on both sides of the main frame (1), and the connecting plates (5) are slidably connected to the fixing rod (4); A vibration spring (6) is sleeved on the surface of the fixed rod (4), and a vibration element is provided on the main frame (1); Mounting plate (7) is fixedly connected to the top of the fixing rod (4); An electric push rod (8) is fixedly installed on the top of the mounting plate (7) and its output end moves through the mounting plate (7); And a pressing plate (9) that is fixedly connected to the output end of the electric push rod (8) and slides with the fixed rod (4).

2. The harvester cleaning screen device with adjustable vibration frequency according to claim 1, characterized in that: The bottom of the extrusion plate (9) is fixedly installed with a crash block (10), which is made of rubber.

3. The harvester cleaning screen device with adjustable vibration frequency according to claim 1, characterized in that: The vibrating component includes a vibrating motor (11) fixedly installed on both sides of the main frame (1).

4. The harvester cleaning screen device with adjustable vibration frequency according to claim 1, characterized in that: The lifting mechanism includes a support block (12) fixedly installed on one side of the inner wall of the connecting seat (3), a hydraulic cylinder (13) fixedly installed on the top of the support block (12), and a support plate (14) fixedly connected to the output end of the hydraulic cylinder (13). The fixing rod (4) is fixedly installed on the top of the support plate (14), and the two ends of the vibration spring (6) are respectively connected to the support plate (14) and the connecting plate (5).

5. A harvester cleaning screen device with adjustable vibration frequency according to claim 1, characterized in that: A reinforcing beam (15) is fixedly installed between the opposite faces of each set of connecting seats (3), and multiple reinforcing pipes (16) are fixedly installed between the two sides of the inner wall of the main frame (1).

6. The harvester cleaning screen device with adjustable vibration frequency according to claim 1, characterized in that: A guide plate (22) is fixedly installed between the inner walls of one end of the main frame (1), and a fixing mechanism for installing the screen (2) is provided inside the main frame (1).

7. A harvester cleaning screen device with adjustable vibration frequency according to claim 6, characterized in that: The fixing mechanism includes an inverted plate (17) fixedly installed on both sides of the inner wall of the main frame (1), a guide rod (19) fixedly installed on the top of one end of the inverted plate (17), a slot opened on the inner bottom wall of one end of the inverted plate (17), a permanent magnet installed inside the slot, a T-shaped block (18) slidably connected to the surface of the guide rod (19) and penetrating the inverted plate (17) and engaging with the slot, a limiting block (20) fixedly connected to the top of the guide rod (19), and a reset spring (21) sleeved on the surface of the guide rod (19) and connected at both ends to the T-shaped block (18) and the limiting block (20) respectively. The screen (2) is slidably connected to the inside of the inverted plate (17), and the T-shaped block (18) is magnetically connected to the permanent magnet.

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