Potato harvester drive

Abstract

This utility model discloses a transmission device for a potato harvester, belonging to the field of agricultural machinery and implements technology. It includes a support frame and a transmission shaft. A sprocket separator, which can be controlled to rotate the transmission shaft via a lever, is fitted onto the outside of the transmission shaft. The sprocket separator includes an active separation gear fitted onto the outside of the transmission shaft via a limiting structure and a driven engagement flange slidably connected to the transmission shaft via a sliding key. The sprocket separator can be adjusted to be either engaged or disengaged according to the working environment to control the operation of the potato harvester, increasing its practicality. Furthermore, a lever for controlling the engagement and disengagement of the driven engagement flange is connected to the outside of the driven engagement flange via a fixedly fitted flange bearing. The lever is hinged to the outer wall of the flange bearing. The use of a flange bearing makes power transmission smoother and increases the service life of the equipment.

Description

Technical fields: This utility model belongs to the field of agricultural machinery and implements technology, and more specifically relates to a transmission device for a potato harvester. Background technology: Currently, small potato and peanut harvesters, suspended and towed by hand-held or small four-wheeled tractors, can be used on plots of land of varying sizes, offering flexibility and convenience, and are very popular among farmers. In existing technology, the transmission devices of potato harvesters are mostly based on fixed-meshing transmission structures. The core of these structures is the transfer of power from the drive source, such as a tractor gearbox, through gear sets or sprocket sets. This power is then transmitted via a chain to drive the transmission sprockets and drive shaft, which in turn drive the harvester's conveying components.

[0001] However, this structure has a defect: the drive sprocket and drive shaft are rigidly connected, and power transmission is continuous. When the harvester needs to stop working, such as to clean the conveying parts or adjust the working position, it is necessary to stop the machine and cut off the drive source power. It is impossible to control the separation and engagement of the harvester transmission independently without stopping the drive source, which leads to reduced working efficiency. In addition, frequent start-stop of the drive source can easily increase equipment wear and tear. Utility Model Content: To solve the above problems and overcome the shortcomings of the existing technology, this utility model provides a transmission device for a potato harvester; The first technical problem to be solved was that it was impossible to control the disengagement and engagement of the harvester's drive independently without stopping the drive source, which led to reduced operating efficiency and increased equipment wear and tear due to frequent start-ups and shutdowns of the drive source.

[0002] The specific technical solution of this utility model to solve the above-mentioned technical problems is as follows: a potato harvester transmission device includes a support frame and a transmission shaft. The two ends of the transmission shaft are connected to the support frame through bearing seats. A sprocket separator that can control the rotation of the transmission shaft by a lever is sleeved on the outside of the transmission shaft. The sprocket separator includes a driving release gear and a driven engagement flange sleeved on the outside of the drive shaft. A limiting structure for limiting the driving release gear is provided between the driving release gear and the drive shaft. The driven engagement flange is slidably connected to the drive shaft via a sliding key. The outer end face of the active separating gear is provided with a separable meshing part, which includes an active meshing ring fixedly connected to the side end face of the active separating gear and a driven meshing ring fixedly connected to the driven meshing flange. The active meshing ring and the driven meshing ring are separably meshed. The driven engagement flange is connected to a lever for controlling the disengagement of the engagement part via a fixedly sleeved flange bearing on its outer side. The lever is hinged to the outer wall of the flange bearing.

[0003] Furthermore, the slide key is fixedly mounted on the drive shaft.

[0004] Furthermore, the limiting structure includes a limiting ring, which is fixedly disposed on the outer side wall of the transmission shaft, and the inner wall of the active separation gear is provided with a limiting groove that matches the limiting ring.

[0005] Furthermore, a compression spring is provided between the driven flange and the adjacent bearing housing to apply a thrust to the driven flange, and the compression spring is sleeved on the outside of the drive shaft.

[0006] Furthermore, a stop plate for engaging the lever position is fixedly installed above the support frame.

[0007] Furthermore, the front end of the lever is provided with a concave frame that is hinged to the flange bearing.

[0008] Furthermore, the concave frame is fixedly mounted to the lever.

[0009] Furthermore, the lever passes through the stop plate, and the lever is hinged to the support frame by bolts.

[0010] The beneficial effects of this utility model are as follows: This utility model creatively designs a detachable sprocket separator to control the rotation of the drive shaft. The sprocket separator includes an active separating gear sleeved on the outside of the drive shaft through a limiting structure and a driven engagement flange slidably connected to the drive shaft through a sliding key. The active separating gear and the driven engagement flange can be detachably engaged, allowing the sprocket separator to be adjusted to be either detached or engaged according to the working environment to control the operation of the potato harvester, thus increasing the practicality of the potato harvester.

[0011] The beneficial effects of this utility model are: the driven engagement flange is connected to a lever for controlling the disengagement of the engagement part by a flange bearing that is fixedly sleeved on the outside. The lever is hinged to the outer wall of the flange bearing. The use of the flange bearing can make the power transmission more stable and increase the service life of the equipment. Attached image description: Appendix Figure 1 This is a schematic diagram of the structure of this utility model; Appendix Figure 2 This is a partial structural schematic diagram of the present invention; Appendix Figure 3 This is a cross-sectional view of the assembly structure of the sprocket separator and drive shaft of this utility model; Appendix Figure 4 This is a cross-sectional view of the sprocket separator of this utility model; in the attached drawing: 1. Support frame; 2. Drive shaft; 21. Sliding key; 3. Limiting structure; 4. Bearing housing; 5. Sprocket separator; 51. Driving separation gear; 52. Driven engagement flange; 521. Flange bearing; 53. Engaging part; 531. Driving engagement ring; 532. Driven engagement ring; 6. Lever; 61. Concave frame; 7. Compression spring; 8. Gear plate. Detailed implementation method: In the description of this utility model, it should be understood that the terms "center," "upper," "lower," "left," "right," "rear," "lower left," "upper right," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the scope of protection of this utility model. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0012] The specific implementation of this utility model: The potato harvester transmission device includes a support frame 1 and a transmission shaft 2. The two ends of the transmission shaft 2 are connected to the support frame 1 through bearing seats 4. A sprocket separator 5, which can control the rotation of the transmission shaft 2 through a lever 6, is sleeved on the outside of the transmission shaft 2. As a preferred embodiment of this utility model The sprocket separator 5 includes a drive release gear 51 sleeved on the outside of the drive shaft 2 and a driven meshing flange 52. The drive release gear 51 is powered by the tractor gearbox and is connected to the tractor gearbox power output wheel via a chain. A limiting structure 3 for limiting the active separating gear 51 is provided between the active separating gear 51 and the transmission shaft 2. Preferably, the limiting structure 3 includes a limiting ring, which is fixedly disposed on the outer side wall of the transmission shaft 2. The inner wall of the active separating gear 51 is provided with a limiting groove that matches the limiting ring. This structure can prevent the active separating gear 51 from sliding back and forth along the transmission shaft 2. The driven engagement flange 52 is slidably connected to the transmission shaft 2 via a sliding key 21. The sliding key 21 is fixedly disposed on the transmission shaft 2 by welding or integrally forming with the transmission shaft 2. The sliding key 21 is a fixed protrusion, and the driven engagement flange 52 and the sliding key 21 are provided with sliding grooves that cooperate with the sliding key 21 at corresponding positions.

[0013] The outer end face of the active separating gear 51 is provided with a separable meshing part 53. The meshing part 53 includes an active meshing ring 531 fixedly connected to the side end face of the active separating gear 51 and a driven meshing ring 532 fixedly connected to the driven meshing flange 52. The active meshing ring 531 and the driven meshing ring 532 are separable and meshing. The driven engagement flange 52 is positioned close to the bearing housing 4, while the driving separation gear 51 is positioned away from the bearing housing 4. A compression spring 7 is provided between the driven engagement flange 52 and the adjacent bearing housing 4 to apply a thrust to the driven engagement flange 52, preventing the sprocket separator 5 from shifting position during operation. The compression spring 7 is sleeved on the outside of the drive shaft 2, and under the action of the compression spring 7, the driving engagement ring 531 and the driven engagement ring 532 mesh with each other. The power output wheel of the tractor gearbox is transmitted to the drive release gear 51 via a chain, causing the drive release gear 51 to rotate. The drive release gear 51 then transmits power to the driven flange 52, causing the driven flange 52 to rotate. Since the driven flange 52 is keyed to the drive shaft 2, the rotation of the driven flange 52 will cause the drive shaft 2 to rotate as well. The drive shaft 2 then transmits power to the harvester, causing the harvester to work.

[0014] The specific structure and principle of the transmission shaft 2, which transmits power to the harvester to drive its operation, are unrelated to the technical problem solved by this utility model and are not within the scope of protection of this utility model, so they will not be described in detail.

[0015] As a preferred embodiment of this utility model: The driven engagement flange 52 is connected to a lever 6 via a flange bearing 521 to control the engagement of the engagement part 53. The flange bearing 521 is sleeved on the outside of the driven engagement flange 52. The lever 6 is detachably connected to the outer wall of the flange bearing 521. The lever 6 is connected to the driven engagement flange 52 via the flange bearing 521. Adjusting the lever 6 allows the driven engagement flange 52 to slide along the slide key 21 on the transmission shaft 2, thereby adjusting the engagement effect of the active separation gear 51 and the driven engagement flange 52. The front end of the lever 6 is provided with a concave frame 61 that is hinged to the flange bearing 521. The concave frame 61 is fixedly installed with the lever 6. The front side wall of the concave frame 61 is provided with a hinge groove for bolting the flange bearing 521. The side wall of the flange bearing 521 is provided with a hinge hole corresponding to the hinge groove.

[0016] A stop plate 8 for engaging the position of the lever 6 is fixedly installed above the support frame 1. The lever 6 passes through the stop plate 8 and is hinged to the support frame 1 by bolts.

[0017] With this structure, a flange bearing 521 is fixedly sleeved on the outside of the driven engagement flange 52, and the concave frame 61 is hinged to the outer sleeve of the flange bearing 521 by bolts. The driven engagement flange 52 and the flange bearing 521 are fixedly rotated. The use of the flange bearing 521 can make the power transmission smoother.

[0018] Furthermore, it should be noted that this utility model is a transmission device for a potato harvester. In specific operation, By manually controlling the position of lever 6 in the gear plate 8, the lever 6 is deactivated in the gear plate 8. At this time, the compression spring 7 will apply a thrust to the driven engagement flange 52, and the driven engagement flange 52 will engage with the driving release gear 51. When the tractor is started manually, the power from the tractor gearbox will drive the active release gear 51 to rotate via the chain. The active release gear 51 will drive the driven flange 52 to rotate. Since the driven flange 52 is fitted with a flange bearing 521 on its outer side, the driven flange 52 will rotate within the flange bearing 521. The driven flange 52 is keyed to the drive shaft 2. As the driven flange 52 rotates, it will drive the drive shaft 2 to rotate. The drive shaft 2 will then transmit power to the harvester and drive the harvester to work.

[0019] When the harvester stops working, the tractor stops, and the tractor gearbox power output wheel stops transmitting power. By manually pushing lever 6, lever 6 drives the driven engagement flange 52 to compress spring 7. After the driven engagement flange 52 disengages from the drive release gear 51, lever 6 can be engaged in the gear position plate 8. When the tractor is restarted, the tractor gearbox power output wheel will drive the drive release gear 51 to rotate on the drive shaft 2, and will not transmit power to the driven engagement flange 52. Therefore, when the drive release gear 51 and the driven engagement flange 52 disengage, the sprocket separator 5 will not transmit power to the drive shaft 2, thus stopping the harvester and increasing the practicality of the potato harvester.

[0020] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A transmission device for a potato harvester, comprising a support frame (1) and a transmission shaft (2), wherein both ends of the transmission shaft (2) are connected to the support frame (1) via bearing seats (4), and a sprocket separator (5) is sleeved on the outside of the transmission shaft (2) and can be controlled to rotate the transmission shaft (2) by a lever (6). Its features are: The sprocket separator (5) includes an active separation gear (51) sleeved on the outside of the drive shaft (2) and a driven engagement flange (52). A limiting structure (3) for limiting the active separation gear (51) is provided between the active separation gear (51) and the drive shaft (2). The driven engagement flange (52) is slidably connected to the drive shaft (2) via a slide key (21). The outer end face of the active release gear (51) is provided with a separable meshing part (53). The meshing part (53) includes an active meshing ring (531) fixedly connected to the side end face of the active release gear (51) and a driven meshing ring (532) fixedly connected to the driven meshing flange (52). The active meshing ring (531) and the driven meshing ring (532) are separable and meshing. The driven engagement flange (52) is connected to a lever (6) for controlling the separation of the engagement part (53) via a fixedly sleeved flange bearing (521) on the outside. The lever (6) is hinged to the outer wall of the flange bearing (521).

2. A potato harvester drive as claimed in claim 1, characterised in that The slide key (21) is fixedly mounted on the drive shaft (2).

3. A potato harvester drive as claimed in claim 1, characterised in that The limiting structure (3) includes a limiting ring, which is fixedly installed on the outer side wall of the transmission shaft (2). The inner wall of the active separation gear (51) is provided with a limiting groove that matches the limiting ring.

4. A potato harvester drive as claimed in claim 1, characterised in that A compression spring (7) is provided between the driven flange (52) and the adjacent bearing seat (4) to apply a thrust to the driven flange (52), and the compression spring (7) is sleeved on the outside of the drive shaft (2).

5. A potato harvester drive as claimed in claim 1, characterised in that A stop plate (8) for engaging the position of the lever (6) is fixedly installed above the support frame (1).

6. A potato harvester drive as claimed in claim 5 wherein The front end of the lever (6) is provided with a concave frame (61) that is hinged to the flange bearing (521).

7. A potato harvester drive as claimed in claim 6 wherein The concave frame (61) and the lever (6) are fixedly installed.

8. A potato harvester drive as claimed in claim 7, characterised in that The lever (6) passes through the stop plate (8), and the lever (6) is hinged to the support frame (1) by bolts.

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