Furrow opener facilitating fine adjustment of furrow opening position

Abstract

The utility model relates to a furrow opener convenient for fine adjustment of furrow opening position, which comprises a transmission shell, the outer side of the transmission shell is coaxially sleeved with a fixing frame, the transmission shell is used for being connected with an equipment body, an adjusting shaft is inserted in the transmission shell, the middle section of the adjusting shaft is of a sphere structure, and two axial ends of the inner side of the adjusting shaft are provided with corresponding avoiding grooves corresponding to the middle section of the adjusting shaft. In this way, the adjusting shaft can be rotationally connected with the transmission shell, the adjusting shaft has a wide adjusting range, at the moment, a pull rod is arranged on the outer side of one axial end of the adjusting shaft in a sleeving mode, a follow-up ball is coaxially and fixedly connected to the other axial end of the adjusting shaft, and a cutter shaft is arranged on the outer side of the follow-up ball in a sleeving mode; an operator can change the angle of the central axis of the adjusting shaft through the pull rod, so that the position of the cutter shaft is changed, at the moment, the ditching cutters are fixedly connected to the side end face of the cutter shaft in the circumferential direction, and the ditching position is changed accordingly.

Description

Technical Field

[0001] The utility model relates to the technical field of furrow openers, in particular to a furrow opener which is convenient for fine-tuning a furrow opening position. Background Art

[0002] In the agricultural production process, trenching is a very important link. The quality of trenching directly affects the subsequent sowing and fertilization work. At present, the trenching machines on the market mainly include power input parts, trenching machine gearboxes, trenching machine operating shafts and blades. The power is basically provided by the engine, and after the gearbox changes speed, it is input to the trenching machine's shaft to achieve trenching operations.

[0003] In practice, the trencher is very heavy due to the presence of the engine and the gearbox. This makes it difficult for operators to move the equipment body after the trencher is placed on the ground, especially some small, single-person trenching equipment.

[0004] Therefore, we believe that there is a need for a furrow opener that can adjust the position of the knife shaft and thus adjust the furrowing position without moving the main body of the device, so that the furrowing position is more in line with expectations. Summary of the invention

[0005] In view of the deficiencies in the prior art, the utility model proposes a furrow opener that is easy to fine-tune the furrowing position. It has the advantage of being able to change the furrowing position without moving the device body, saving manpower, and solving the shortcoming of the prior art devices that they cannot finely control the furrowing position.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A furrow opener that is convenient for fine-tuning the furrowing position, comprises a front-rear axial output shaft, a left-right axial transmission housing is arranged on one side of the output shaft, the output shaft and the transmission housing are transmission-connected via a bevel gear set, a fixing frame is coaxially sleeved on the outer side of the transmission housing, an adjusting shaft is inserted into the transmission housing, the middle section of the adjusting shaft is a spherical structure, the middle section of the adjusting shaft is rotationally connected to the transmission housing, and corresponding avoidance grooves are arranged at the two axial ends on the inner side of the adjusting shaft for the adjusting shaft, a pull rod is sleeved on the outer side of one axial end of the adjusting shaft, a follower ball is coaxially fixedly connected to the other axial end of the adjusting shaft, a knife shaft is sleeved on the outer side of the follower ball, and a transmission connection is formed between the knife shaft and the transmission housing.

[0008] The knife shaft is rotatably connected to the follower ball, and a plurality of grooving knives are circumferentially fixedly connected to the side end surface of the knife shaft.

[0009] Preferably, a positioning plate is sleeved on the outer side of one end of the adjusting shaft close to the follower ball, an adaptation groove is opened on the positioning plate for the adjusting shaft, a sliding groove is opened on the positioning plate, a positioning rod is inserted in the sliding groove, the positioning rod is fixedly connected to the knife shaft, a transmission plate is arranged between the positioning plate and the transmission housing, and a follower ring is arranged between the transmission plate and the transmission housing, the follower ring is fixedly connected to the transmission housing, and both ends of the transmission plate are rotatably connected to the positioning plate and the follower ring respectively.

[0010] Preferably, mounting holes are provided on both ends of the transmission plate and the positioning plate, and T-shaped rods are inserted into the mounting holes. The transmission plate is rotatably connected to the transmission housing and the positioning plate through the T-shaped rod, and the smaller diameter portion of the T-shaped rod is located in the mounting hole, and the side end surface of the smaller diameter portion of the T-shaped rod is fixedly connected to the limiting block.

[0011] Preferably, there are two positioning rods and two transmission plates, and the positioning rod is provided with a sliding groove and a mounting hole for the two positioning rods and the two transmission plates.

[0012] Preferably, the pull rod is provided with a mounting groove for the adjusting shaft, the adjusting shaft is inserted into the mounting groove, the pull rod is provided with an external thread, and two locking nuts are threaded on the pull rod along its central axis, a fixing plate is arranged between the two locking nuts, a through hole is provided on the fixing plate for the pull rod, the pull rod is inserted into the through hole, and the fixing plate is fixedly connected to the fixing frame.

[0013] Preferably, there are two pull rods, each of which is equipped with a locking nut and a fixing plate, and the central axes of the two pull rods are perpendicular when projected on the vertical plane.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] The utility model is rotatably connected to the transmission housing by an adjusting shaft, so that when the transmission housing is connected to the equipment body by a fixing frame, the user can change the overall inclination angle of the adjusting shaft by a pull rod on the other side of the adjusting shaft, thereby realizing adjustment of the position of the knife shaft rotatably connected to the other end of the adjusting shaft. This makes it possible for the operator to achieve the purpose of changing the ditching position, that is, the position of the knife shaft, without moving the equipment body in actual operation.

[0016] The utility model constrains the middle section of the adjusting shaft to be a spherical structure, and cooperates with the avoidance grooves on both sides of the transmission housing, so that the rotation range of the adjusting shaft can be wide, and the operator can flexibly adjust it according to actual needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the cooperation between the transmission housing and the output shaft of the utility model;

[0019] Figure 3 This is a schematic diagram of the connection between the transmission housing and the fixing frame of the utility model;

[0020] Figure 4 This is a schematic diagram of the cooperation between the transmission housing and the adjustment shaft of the utility model;

[0021] Figure 5 It is a schematic diagram of the connection between the positioning plate and the transmission plate of the utility model.

[0022] In the figure: 1. output shaft; 2. adjusting shaft; 3. pull rod; 4. knife shaft; 5. grooving knife; 6. follower ring; 7. transmission housing; 8. bevel gear set; 9. fixed frame; 10. follower ball; 11. positioning rod; 12. positioning plate; 13. locking nut; 14. fixing plate; 15. slide groove; 16. T-bar; 17. adaptation groove; 18. limit block; 19. transmission plate. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0025] Please refer to Figure 1-5 A furrow opener that is convenient for fine-tuning the furrowing position includes an output shaft 1 that is transmission-connected to a diesel engine or a corresponding power mechanism. Generally, a gearbox is provided at the output end of the diesel engine or the corresponding power mechanism, and the output shaft 1 is rotated at different speeds by transmission connection with the gearbox.

[0026] As shown in the figure, the output shaft 1 is axial in the front-to-back direction. In this device, the front end of the output shaft 1 is connected to the gearbox, and a corresponding transmission housing 7 is provided at the rear side of the output shaft 1 .

[0027] The output shaft 1 and the transmission housing 7 are connected through a bevel gear set 8. The bevel gear set 8 can not only realize power transmission, but also make the position and axial direction of the output shaft 1 and the transmission housing 7 match the actual whole.

[0028] It should be noted that, in practice, the bevel gear set 8 includes two bevel gears with perpendicular central axes, and the two bevel gears are coaxially fixedly connected to the output shaft 1 and the transmission housing 7 respectively. Therefore, the central axes of the output shaft 1 and the transmission housing 7 are perpendicular to each other.

[0029] Furthermore, the transmission ratio of the two bevel gears in the constrained bevel gear set 8 is not one, and the size of the bevel gear coaxially fixed to the output shaft 1 is smaller than the size of the bevel gear coaxially fixed to the transmission housing 7. This can provide a greater rotational force for the transmission housing 7, so that the corresponding trenching equipment can smoothly break through the soil resistance and complete the trenching work when driven by the transmission housing 7.

[0030] Specifically, the corresponding trenching equipment includes a cutter shaft 4, and a plurality of trenching knives 5 are circumferentially fixedly connected to the side end surface of the cutter shaft 4. The cutter shaft 4 is driven by a transmission housing 7 and then the plurality of trenching knives 5 are rotated to realize the trenching process.

[0031] It should be noted that in practice, a fixing frame 9 is coaxially sleeved on the outer side of the transmission housing 7, the fixing frame 9 is rotatably connected to the transmission housing 7, and the upper end of the fixing frame 9 is fixedly connected to the entire device (not shown in the figure). This can realize the position constraint of the transmission housing 7 relative to the entire device through the fixing frame 9, so that the transmission housing 7 can rotate but the relative position cannot change.

[0032] At the same time, in practice, the output shaft 1 is also rotationally connected to the device as a whole through a corresponding sleeve-type device (not shown in the figure).

[0033] Therefore, the device has an adjusting shaft 2 inserted inside the transmission housing 7, constraining the middle section of the adjusting shaft 2 to be a spherical structure. At this time, by adjusting the shape of the inner wall of the transmission housing 7, the transmission housing 7 and the part corresponding to the spherical structure of the middle section of the adjusting shaft 2 are fit together with the middle section of the adjusting shaft 2, so as to realize the rotational connection between the adjusting shaft 2 and the transmission housing 7, so that the adjusting shaft 2 can rotate relative to the transmission housing 7.

[0034] At this time, in order to avoid travel conflict between the transmission housing 7 and the adjusting shaft 2, and to prevent the inner wall of the transmission housing 7 from hindering the movement of the two ends of the adjusting shaft 2, the device constrains a large gap between the inner walls at both ends of the transmission housing 7 and the adjusting shaft 2 to form an avoidance groove to avoid travel conflict.

[0035] Specifically, a follower ball 10 is coaxially fixedly connected to one end of the adjusting shaft 2 close to the blade shaft 4 . When the adjusting shaft 2 rotates relative to the transmission housing 7 , the follower ball 10 will follow the end of the adjusting shaft 2 to generate relative displacement.

[0036] Therefore, the follower ball 10 is embedded in the cutter shaft 4 and is rotatably connected to the cutter shaft 4. The follower ball 10 can be used to change the relative position of the cutter shaft 4, thereby fine-tuning the trenching position and avoiding the entire device from being started, thereby saving manpower and improving the trenching accuracy.

[0037] Furthermore, in order to ensure that the ditching angle meets the expectations, the device is provided with a positioning plate 12 between the cutter shaft 4 and the transmission housing 7, and a transmission plate 19 is provided between the positioning plate 12 and the transmission housing 7, and the two ends of the transmission plate 19 are rotatably connected to the positioning plate 12 and the transmission housing 7 respectively.

[0038] At the same time, the device constrains that mounting holes are provided on both ends of the transmission plate 19 and on the positioning plate 12, and a T-bar 16 is inserted into the mounting hole. The transmission plate 19 is rotatably connected to the transmission housing 7 and the positioning plate 12 through the T-bar 16. The smaller diameter portion of the T-bar 16 is located in the mounting hole, and the side end surface of the smaller diameter portion of the T-bar 16 is fixedly connected to the limiting block 18, so that the T-bar 16 and the limiting block 18 cooperate to realize the position constraint between the transmission plate 19 and the mounting plate, and between the transmission plate 19 and the transmission housing 7, ensuring that the angle between the end surface of the transmission plate 19 close to the transmission housing 7 and the vertical plane is always zero.

[0039] In addition, it should be noted that since there are two transmission plates 19 and both transmission plates 19 are equipped with mounting holes, the two transmission plates 19 can restrain each other to achieve a follow-up effect. When the transmission housing 7 rotates, the positioning plate 12 will rotate accordingly under the influence of the transmission plates 19.

[0040] Therefore, the device is provided with a corresponding positioning rod 11 on the knife shaft 4, and a slide groove 15 is opened on the positioning plate 12 for the positioning rod 11. By constraining the width of the slide groove 15 to be equal to the diameter of the positioning rod 11, the positioning rod 11 can only make up and down linear motion in the slide groove 15, so that the positioning plate 12 can rotate and the force exerted by the slide groove 15 on the positioning plate 12 can drive the knife shaft 4 to rotate.

[0041] At the same time, it should be noted that by constraining the width of the slide groove 15, the angular deviation of the central axis of the positioning rod 11 can be avoided. This can ensure that the central axis of the knife shaft 4 is always parallel to the horizontal plane and the vertical plane, thereby achieving the effect of constraining the ditching angle.

[0042] Furthermore, the device is provided with a follower ring 6 on the side of the transmission housing 7 close to the knife shaft 4. By fixedly connecting the follower ring 6 to the transmission housing 7, the transmission plate 19 is rotatably connected to the follower ring 6 (the transmission plate 19 is rotatably connected to the follower ring 6 to achieve the rotatable connection between the transmission plate 19 and the transmission housing 7), so that the constraint relationship and transmission relationship between the transmission housing 7 and the positioning plate 12 still exist, which can realize the convenience of installation between the positioning plate 12 and the transmission housing 7.

[0043] It should be noted that since the positioning plate 12 is sleeved on the outside of the adjusting shaft 2, a corresponding adaptation groove 17 needs to be opened on the positioning plate 12 for the adjusting shaft 2, so as to avoid the adjustment shaft 2 rotating, causing the projection of the adjusting shaft 2 on the horizontal plane to increase, and causing a travel conflict with the positioning plate 12.

[0044] It should be noted that a corresponding avoidance groove is also provided on the knife shaft 4 for the adjustment shaft 2, so as to avoid a travel conflict between the knife shaft 4 and the adjustment shaft 2 when the central axis of the knife shaft 4 and the central axis of the adjustment shaft 2 change in angle.

[0045] Specifically, since the middle section of the adjusting shaft 2 is rotatably connected to the transmission housing 7 , the device can change the position of any end of the adjusting shaft 2 by exerting force on the other end.

[0046] Therefore, in the device, a pull rod 3 is sleeved on the outer side of the end of the adjusting shaft 2 away from the knife shaft 4, and the purpose of offsetting the central axis of the adjusting shaft 2 can be achieved by changing the position of the pull rod 3.

[0047] Specifically, there are two pull rods 3, and the central axes of the two pull rods 3 are projected in a vertical relationship in the vertical plane. This can increase the rotation range of the adjustment shaft 2, give full play to the characteristics of the spherical structure in the middle section of the adjustment shaft 2, and ensure that the position of the knife shaft 4 can meet the expected ditching position.

[0048] It should be noted that a mounting groove is provided on the pull rod 3 for the adjusting shaft 2, and the adjusting shaft 2 is inserted into the mounting groove. This allows a diameter difference between the mounting groove and the adjusting shaft 2 to be adjusted so that there is a gap between the adjusting shaft 2 and the mounting groove, thereby avoiding travel conflict between the adjusting shaft 2 and the mounting groove.

[0049] Specifically, in order to fix the position of the pull rod 3, the device is fixedly connected with a fixing plate 14 for the pull rod 3 on the right side of the fixing frame 9, and a through hole is opened on the fixing plate 14 for the pull rod 3. The pull rod 3 is inserted into the through hole, so that the pull rod 3 can make a linear motion along the central axis of the through hole to change the position of the pull rod 3.

[0050] At this time, the device has an external thread on the outer end face of the pull rod 3, and a locking nut 13 is screwed through the external thread. The locking nut 13 abuts against the fixing plate 14, and the fixing plate 14 limits the locking nut 13 to limit the pull rod 3.

[0051] Two locking nuts 13 are threadedly connected to each locking nut 13 , and the two locking nuts 13 are respectively located at the inner and outer sides of the fixing plate 14 , so that the locking nuts 13 can be fully utilized to realize the position constraint of the pull rod 3 .

[0052] In actual use, the utility model:

[0053] First, ensure that all components of the device are assembled in place, and the power applied by the power mechanism can drive the knife shaft 4 to rotate;

[0054] Afterwards, the device is moved to the area where trenching is required, at which time the trenching blade 5 is in contact with the ground and partially embedded in the ground under the influence of gravity;

[0055] Then, the operator determines whether the position of the trenching knife 5 is consistent with the expected position. If not, the pull rod 3 that needs to be moved, the direction of force and the distance are determined according to the offset range. At this time, the locking nut 13 needs to be loosened in advance. After the adjustment is completed, the locking nut 13 is tightened to keep the locking nut 13 in contact with the fixing plate 14.

[0056] Finally, after the adjustment is completed, the device starts to work.

[0057] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A furrow opener that is easy to fine-tune the furrowing position. Features: It comprises an output shaft (1) with a front-to-rear axial direction, a transmission housing (7) with a left-to-right axial direction is arranged on one side of the output shaft (1), the output shaft (1) and the transmission housing (7) are transmission-connected via a bevel gear set (8), and a fixing frame (9) is coaxially sleeved on the outer side of the transmission housing (7); The transmission housing (7) has an adjusting shaft (2) inserted therein, the middle section of the adjusting shaft (2) being a spherical structure, the middle section of the adjusting shaft (2) being rotationally connected to the transmission housing (7), and corresponding avoidance grooves are provided at two axial ends on the inner side of the adjusting shaft (2) for the adjusting shaft (2); The adjusting shaft (2) has a pull rod (3) sleeved on the outside of one axial end, and a follower ball (10) is coaxially fixedly connected to the other axial end of the adjusting shaft (2). A knife shaft (4) is sleeved on the outside of the follower ball (10), and the knife shaft (4) is transmission-connected to the transmission housing (7). The knife shaft (4) is rotationally connected to the follower ball (10), and a plurality of ditching knives (5) are circumferentially fixedly connected to the side end surface of the knife shaft (4).

2. A furrow opener that facilitates fine adjustment of furrow opening position according to claim 1, Features: A positioning plate (12) is sleeved on the outer side of one end of the adjusting shaft (2) close to the follower ball (10), and an adapting groove (17) is opened on the positioning plate (12) for the adjusting shaft (2); The positioning plate (12) is provided with a slide groove (15), a positioning rod (11) is inserted into the slide groove (15), and the positioning rod (11) is fixedly connected to the knife shaft (4); A transmission plate (19) is arranged between the positioning plate (12) and the transmission housing (7), and a follower ring (6) is arranged between the transmission plate (19) and the transmission housing (7). The follower ring (6) is fixedly connected to the transmission housing (7), and two ends of the transmission plate (19) are rotatably connected to the positioning plate (12) and the follower ring (6) respectively.

3. A furrow opener that facilitates fine adjustment of furrow opening position according to claim 2, Features: Mounting holes are provided at both ends of the transmission plate (19) and the positioning plate (12), and T-shaped rods (16) are inserted into the mounting holes. The transmission plate (19) is rotatably connected to the transmission housing (7) and the positioning plate (12) via the T-shaped rods (16); The portion of the T-shaped rod (16) with a smaller diameter is located in the mounting hole, and the side end surface of the portion of the T-shaped rod (16) with a smaller diameter is fixedly connected to a limiting block (18).

4. A furrow opener that facilitates fine adjustment of furrow opening position according to claim 2, Features: The number of the positioning rods (11) and the transmission plates (19) is two, and the positioning rod (11) is provided with a sliding groove (15) and a mounting hole for matching the two positioning rods (11) and the two transmission plates (19).

5. A furrow opener that facilitates fine adjustment of furrow opening position according to claim 1, Features: The pull rod (3) is provided with a mounting groove for the adjusting shaft (2), the adjusting shaft (2) is inserted into the mounting groove, the pull rod (3) is provided with an external thread, and two locking nuts (13) are screwed on the pull rod (3) along its central axis; A fixing plate (14) is arranged between the two locking nuts (13). A through hole is opened on the fixing plate (14) for the pull rod (3). The pull rod (3) is inserted into the through hole, and the fixing plate (14) is fixedly connected to the fixing frame (9).

6. A furrow opener that facilitates fine adjustment of furrow opening position according to claim 5, Features: There are two pull rods (3), each of which is equipped with a locking nut (13) and a fixing plate (14), and the central axes of the two pull rods (3) are perpendicular when projected on a vertical plane.

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