Chain tensioning mechanism for beet-topper

Abstract

A chain tensioning mechanism for a beet leaf trimming vehicle includes a frame, a gearbox fixedly mounted on the frame, and main shafts connected to the output shaft of the gearbox via chain drives. The main shafts are rotatably mounted on the frame via bearings and have several trimming blades mounted on them. A connecting frame for connection to a tractor is fixedly mounted on one side of the frame, and a caster wheel is mounted on the other side. A side plate is fixedly mounted on the frame, and one output shaft of the gearbox and one end of one of the main shafts pass through the side plate. This invention features a simple structure and ingenious design. Tensioning wheels on an adjusting plate abut against the inner side of the chain, while the remaining tensioning wheels abut against the outer side. Under the elastic force of a tensioning spring rod, the chain is tensioned, preventing chain slippage, ensuring transmission efficiency, meeting practical needs, and suitable for widespread application.

Description

Technical Field

[0001] This utility model belongs to the field of chain tensioning devices for beet leaf trimming vehicles, specifically a chain tensioning mechanism for beet leaf trimming vehicles. Background Technology

[0002] A beet leaf trimmer is an agricultural machine mainly used to mechanically remove leaves and roots from beets during harvest, while retaining the beet tubers for subsequent processing. The equipment removes leaves by striking the beets with high-speed rotating blades. Beet leaf trimmers generally transmit power through chain drive, but in some cases, the main shaft is far from the power source, and the chain used is long, which can easily lead to slack and lack of tension. If the chain is not tensioned, there is a risk of reduced transmission efficiency, slippage, and detachment, as well as vibration and noise. Therefore, we designed a chain tensioning mechanism for beet leaf trimmers that can tension the chain. Utility Model Content

[0003] This utility model provides a chain tensioning mechanism for a beet leaf trimming vehicle to overcome the deficiencies in the prior art.

[0004] This utility model is achieved through the following technical solution:

[0005] A chain tensioning mechanism for a beet leaf trimming vehicle includes a frame, a gearbox fixedly mounted on the frame, and main shafts connected to the output shaft of the gearbox via chain drive. The main shafts are rotatably mounted on the frame via bearings and have several trimming blades mounted on them. A connecting frame for connection to a tractor is fixedly mounted on one side of the frame, and a movable wheel is mounted on the other side of the frame. A side plate is fixedly mounted on the frame. One end of an output shaft of the gearbox and one end of one of the main shafts passes through the side plate, and a first sprocket and a second sprocket are fixedly mounted thereon. The first sprocket and the second sprocket are connected via chain drive. Tensioning columns are fixedly mounted on both sides of the side plate, and tensioning wheels are rotatably mounted on the tensioning columns via bearings. An adjustment plate is hinged to the side plate, and a tensioning column is also fixedly mounted on the adjustment plate, with a tensioning wheel also rotatably mounted on the tensioning column via bearings. A U-shaped plate is hinged to the adjustment plate, and the U-shaped plate is connected to the side plate via a tension spring rod.

[0006] As described above, in a beet leaf trimming vehicle chain tensioning mechanism, a cover is fixedly installed on the side plate, and the cover covers the first sprocket, the second sprocket, the chain, the tensioning column, and the tensioning wheel.

[0007] As described above, a chain tensioning mechanism for a beet leaf trimming machine has a pair of support legs fixedly installed on one side of the frame.

[0008] As described above, the chain tensioning mechanism for a beet leaf trimming vehicle includes a tensioning spring rod comprising a long bolt, a tensioning spring mounted on the long bolt, a baffle plate fixedly installed on the side plate, one end of the long bolt passing through the baffle plate and fixedly connected to a U-shaped plate.

[0009] As described above, in a chain tensioning mechanism for a beet leaf trimming vehicle, a nut is threaded onto the long bolt, and the nut is located at one end of the tension spring and abuts against and contacts one end of the tension spring.

[0010] As described above, a chain tensioning mechanism for a beet leaf trimming vehicle, wherein the chain is a double-row chain, and the corresponding first sprocket and second sprocket are double-row sprockets.

[0011] The advantages of this utility model are: the utility model has a simple structure and ingenious design. The tensioning wheel on the adjusting plate abuts against the inner side of the chain, while the other tensioning wheels abut against the outer side of the chain. Under the elastic force of the tensioning spring rod, the chain is tensioned, thereby preventing the chain from falling off, ensuring transmission efficiency, meeting practical needs, and suitable for promotion. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of a tension spring rod; Figure 3 yes Figure 2 A magnified view of part I.

[0014] Attached reference numerals: 1. Frame, 2. Gearbox, 3. Main shaft, 4. Side plate, 5. First sprocket, 6. Second sprocket, 7. Chain, 8. Tensioning column, 9. Tensioning wheel, 10. Adjusting plate, 11. U-shaped plate, 12. Long bolt, 13. Tensioning spring, 14. Support leg, 15. Moving wheel, 16. Blade, 20. Cover, 40. Baffle, 50. Nut. Detailed Implementation

[0015] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0016] A chain tensioning mechanism for a beet leaf trimming vehicle, such as Figure 1 , 2As shown in Figures 1 and 3, the device includes a frame 1, on which a gearbox 2 is fixedly mounted. The output shaft of the gearbox 2 is connected to a main shaft 3 via chain drive. In this embodiment, the gearbox 2 has one input shaft and two output shafts. The gearbox 2 transmits power to the main shaft 3, which is rotatably mounted on the frame 1 via bearings. Several beating blades 16 are mounted on the main shaft 3. The gearbox 2 transmits power to the main shaft 3, which drives the beating blades 16 to rotate and beating the beets. A connecting frame for connection to a tractor is fixedly mounted on one side of the frame 1. The connecting frame includes several tensioning columns fixedly connected to the frame 1 and connecting plates with connecting holes on the tensioning columns for connection to the tractor. Casters 15 are mounted on the other side of the frame 1. A side plate 4 is fixedly installed on the frame 1. One output shaft of the gearbox 2 and one end of one of the main shafts 3 pass through the side plate 4, and a first sprocket 5 and a second sprocket 6 are fixedly installed in sequence. The first sprocket 5 is coaxially arranged with the corresponding output shaft of the gearbox 2, and the second sprocket 6 is coaxially arranged with the corresponding main shaft 3. The first sprocket 5 and the second sprocket 6 are connected by a chain 7. Tensioning columns 8 are fixedly installed on both sides of the side plate 4. Tensioning wheels 9 are rotatably installed on the tensioning columns 8 through bearings. An adjustment plate 10 is hingedly installed on the side plate 4. Tensioning columns 8 are also fixedly installed on the adjustment plate 10, and tensioning wheels 9 are also rotatably installed on the tensioning columns 8 through bearings. A U-shaped plate 11 is hingedly installed on the adjustment plate 10. The U-shaped plate 11 is connected to the side plate 4 through a tension spring rod. This utility model has a simple structure and ingenious design. The tensioning wheel 9 on the adjusting plate 10 abuts against the inner side of the chain, while the other tensioning wheels abut against the outer side of the chain 7. Under the elastic force of the tensioning spring rod, the chain 7 is tensioned, thereby preventing the chain from falling off, ensuring transmission efficiency, meeting practical needs, and suitable for promotion. When this device is in use, the output shaft of the gearbox 2 transmits the power from the power source to the first sprocket 5. The first sprocket 5 drives the second sprocket 6 to rotate via the chain 7, which in turn drives the corresponding main shaft 3 to rotate. This causes the main shaft 3 to drive the beet blades 16 on it to thresh the beets. When the first sprocket 5 drives the second sprocket 6 to rotate via the chain 7, the tensioning wheels 9 on both sides of the side plate 4 are in contact with the outer side of the chain 7, and the tensioning wheel 9 on the adjusting plate 10 is in contact with the inner side of the chain 7. Under the action of the tensioning spring rod, the tensioning wheel 9 on the adjusting plate 10 presses the inner side of the chain 7, keeping the chain 7 in a taut state at all times. This prevents slack from causing vibration and noise, reduces the possibility of the chain 7 falling off, and ensures transmission efficiency.

[0017] Specifically, as shown in the figure, a cover 20 is fixedly installed on the side plate 4 in this embodiment. The cover 20 covers the first sprocket 5, the second sprocket 6, the chain 7, the tensioning column 8, and the tensioning wheel 9. The cover 20 can protect the first sprocket 5, the second sprocket 6, the chain 7, the tensioning column 8, and the tensioning wheel 9, and prevent external impurities such as splashed vegetable leaves from affecting the transmission.

[0018] Specifically, as shown in the figure, a pair of support legs 14 are fixedly installed on one side of the frame 1 in this embodiment. When the frame 1 is not connected to the tractor, the support legs 14 support one side of the frame 1 to prevent it from contacting the ground, so as to keep it level and facilitate use.

[0019] Furthermore, as shown in the figure, the tension spring rod in this embodiment includes a long bolt 12, on which a tension spring 13 is fitted. A baffle 40 is fixedly installed on the side plate 4. One end of the long bolt 12 passes through the baffle 40 and is fixedly connected to the U-shaped plate 11. One end of the tension spring 13 abuts against the end of the long bolt 12, and the other end abuts against the baffle 40. After the chain 7 is installed, under the action of the tension spring 13, the long bolt 12 pulls the adjusting plate 10, causing the tension wheel 9 to abut against the inner side of the chain 7 and providing tension, so that the chain 7 remains taut.

[0020] Furthermore, as shown in the figure, in this embodiment, a nut 50 is threaded onto the long bolt 12. The nut 50 is located at one end of the tension spring 13 and abuts against one end of the tension spring 13. By tightening the nut 50, the long bolt 12 moves relative to the axis of the nut 50, thereby driving the adjusting plate 10 to rotate along the hinge axis, changing the tilt angle of the adjusting plate 10, and thus changing the tensioning effect of the tension wheel 9 on the chain 7. This can be adjusted according to needs, increasing practicality.

[0021] Furthermore, as shown in the figure, the chain 7 in this embodiment is a double-row chain, and the corresponding first sprocket 5 and second sprocket 6 are double-row sprockets. The double-row chain increases strength, reduces the risk of chain link breakage, and is more stable.

[0022] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A chain tensioning mechanism for a beet leaf trimming vehicle, comprising a frame (1), a gearbox (2) fixedly mounted on the frame (1), a main shaft (3) connected to the output shaft of the gearbox (2) via chain drive, the main shaft (3) being rotatably mounted on the frame (1) via bearings, several trimming blades (16) being mounted on the main shaft (3), a connecting frame for connection to a tractor fixedly mounted on one side of the frame (1), and a moving wheel (15) mounted on the other side of the frame (1), characterized in that: A side plate (4) is fixedly installed on the frame (1). One output shaft of the gearbox (2) and one end of one of the main shafts (3) pass through the side plate (4) and the first sprocket (5) and the second sprocket (6) are fixedly installed in sequence. The first sprocket (5) and the second sprocket (6) are connected by a chain (7). Tensioning columns (8) are fixedly installed on both sides of the side plate (4). Tensioning wheels (9) are mounted on the tensioning columns (8) by bearings. An adjustment plate (10) is hinged on the side plate (4). Tensioning columns (8) are also fixedly installed on the adjustment plate (10). Tensioning wheels (9) are also mounted on the tensioning columns (8) by bearings. A U-shaped plate (11) is hinged on the adjustment plate (10). The U-shaped plate (11) is connected to the side plate (4) by a tensioning spring rod.

2. The chain tensioning mechanism for a beet leaf trimming vehicle according to claim 1, characterized in that: A cover (20) is fixedly installed on the side plate (4), and the cover (20) covers the first sprocket (5), the second sprocket (6), the chain (7), the tensioning column (8), and the tensioning wheel (9).

3. The chain tensioning mechanism for a beet leaf trimming vehicle according to claim 1, characterized in that: A pair of support legs (14) are fixedly installed on one side of the frame (1).

4. The chain tensioning mechanism for a beet leaf trimming vehicle according to claim 3, characterized in that: The tension spring rod includes a long bolt (12), a tension spring (13) is fitted on the long bolt (12), a baffle (40) is fixedly installed on the side plate (4), one end of the long bolt (12) passes through the baffle (40) and is fixedly connected to the U-shaped plate (11).

5. The chain tensioning mechanism for a beet leaf trimming vehicle according to claim 4, characterized in that: A nut (50) is threaded onto the long bolt (12). The nut (50) is located at one end of the tension spring (13) and is in contact with one end of the tension spring (13).

6. The chain tensioning mechanism for a beet leaf trimming vehicle according to claim 1, characterized in that: The chain (7) is a double-row chain, and the corresponding first sprocket (5) and second sprocket (6) are double-row sprockets.

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