Transplanter front axle structure and self-propelled transplanter

Abstract

The utility model relates to a front axle structure of a transplanter, which comprises a front axle main shaft, a rear axle main shaft and a rear axle main shaft, the first front wheel assembly and the second front wheel assembly are respectively arranged at two ends of the front axle main shaft; the first front wheel assembly and the second front wheel assembly are of a symmetrical structure. The first front wheel assembly comprises an installation main shaft, a second front wheel assembly and a third front wheel assembly, the adjusting bracket is rotatably arranged at the other end of the mounting main shaft; the electric push rod is arranged on the mounting main shaft; the telescopic end of the electric push rod is rotationally connected with the adjusting bracket; and the adjusting rod is movably connected to the adjusting bracket. According to the self-propelled transplanter, the wheels on one side are independently subjected to multi-dimensional adjustment, or the wheels on the two sides are simultaneously subjected to multi-dimensional adjustment, and the height adjustment of the rear wheels of the self-propelled transplanter is matched, so that the flexibility of the self-propelled transplanter is higher, and the self-propelled transplanter can be suitable for transplanting operation under the working conditions of different scenes. And during ridge crossing, an operator can operate conveniently, and stable running of the self-propelled transplanter can be achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of self-propelled transplanters, in particular to a transplanter front axle structure and a self-propelled transplanter. Background Art

[0002] In the context of a crop rotation system, raising seedlings in advance and using transplanters for planting operations is an effective way to resolve crop rotation conflicts. In recent years, small self-propelled transplanters have developed rapidly in China. Small self-propelled transplanters are usually driven by small horsepower engines for driving and planting systems. Small self-propelled transplanters have the advantages of compact structure, easy operation, and are suitable for use in small plots, hilly and mountainous areas, and other areas. In small plots, in order to maximize the use of land resources, crops are planted closely, and there is little space for field machinery to travel, especially the turning space at both ends of the ridges. In hilly and mountainous areas, in addition to the close planting of crops and the small space for machinery to travel, the plots also have a certain slope, and the whole machine is prone to tilt when the machinery is traveling; there is a height difference between two adjacent plots, which makes it difficult to transport machinery.

[0003] There is a transplanter that is large in size and its front wheels cannot be freely retracted. In order to complete the ridge crossing without damaging the ridge surface and the seedlings as much as possible, the front wheels of the transplanter are lifted up and above the ridge surface, which is inconvenient to operate. There is another transplanter on the market that completes the ridge crossing through a complete chassis mechanism and its supporting electrical control system. When encountering obstacles, it is easy to cause the machine body to bump, which is not conducive to the stable operation of the machine. Utility Model Content

[0004] The utility model provides a transplanter front axle structure and a self-propelled transplanter, so as to solve the technical problems that the structure of the existing transplanter cannot flexibly complete ridge crossing and the operation is complicated when crossing ridges.

[0005] The utility model discloses a front axle structure of a transplanter, which comprises: a front axle main shaft, the middle part of which can be rotatably connected to an engine base; a first front wheel assembly and a second front wheel assembly, which are respectively arranged at two ends of the front axle main shaft; the first front wheel assembly and the second front wheel assembly are mutually symmetrical structures;

[0006] The first front wheel assembly includes: a mounting spindle, one end of which is telescopically disposed on the front axle spindle; an adjustment bracket, which is rotatably disposed on the other end of the mounting spindle; an electric push rod, which is disposed on the mounting spindle; the telescopic end of the electric push rod is rotatably connected to the adjustment bracket; and an adjustment rod, which is movably connected to the adjustment bracket.

[0007] Furthermore, the front axle structure of the transplanter also includes a fixed frame, which is arranged on the mounting main shaft; the electric push rod is arranged on the fixed frame and is rotatably connected to the fixed frame.

[0008] Furthermore, the adjustment bracket includes a driving plate and an adjustment sleeve, the driving plate is sleeved on the mounting main shaft; the telescopic end is rotatably connected to the driving plate; the adjustment sleeve is tilted on the driving plate; the adjustment rod is telescopically arranged in the adjustment sleeve.

[0009] Furthermore, the driving plate is connected to the mounting spindle via a bearing.

[0010] Furthermore, the adjusting rod is provided with a plurality of positioning holes, and the plurality of positioning holes are evenly distributed along the longitudinal direction of the adjusting rod.

[0011] Furthermore, the adjustment sleeve is provided with a plurality of adjustment holes, and the plurality of adjustment holes are evenly distributed along the longitudinal direction of the adjustment sleeve.

[0012] Furthermore, the distance between two adjacent positioning holes is L1; the distance between two adjacent adjustment holes is L2; ​​L2=1.5L1.

[0013] Furthermore, a spring is provided between the front axle main shaft and the engine base.

[0014] Furthermore, a wheel is provided at the bottom end of the adjusting rod.

[0015] The utility model also discloses a self-propelled transplanter, comprising the transplanter front axle structure as described in any one of the above items.

[0016] The utility model provides a transplanter front axle structure and a self-propelled transplanter, which can achieve the following technical effects:

[0017] The self-propelled transplanter of the utility model can adjust one wheel on one side alone or on both sides at the same time, and can be adjusted in multiple dimensions, and can be more flexible and suitable for transplanting operations in different working conditions. When crossing ridges, it is convenient for the operator to operate and can achieve smooth driving of the self-propelled transplanter.

[0018] The above general description and the following description are merely exemplary and explanatory and are not intended to limit the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] One or more embodiments are exemplarily described by corresponding drawings, and these exemplary descriptions and drawings do not limit the embodiments. Elements with the same reference numerals in the drawings are regarded as similar elements, and wherein:

[0020] Figure 1 It is a schematic diagram of an embodiment of a front axle structure of a transplanter of the utility model;

[0021] Figure 2 It is an exploded schematic diagram of an embodiment of a front axle structure of a transplanter of the utility model;

[0022] Figure 3 It is a schematic diagram of an embodiment of a mounting main shaft of a front axle structure of a transplanter according to the utility model;

[0023] Figure 4 It is an exploded schematic diagram of an embodiment of the installation of an adjustment bracket and an adjustment rod of a front axle structure of a transplanter according to the utility model;

[0024] Figure 5 It is a partial schematic diagram of an embodiment of an adjustment sleeve and an adjustment rod of a front axle structure of a transplanter according to the utility model;

[0025] Figure 6 This is a schematic diagram of an embodiment of a self-propelled transplanter of the utility model. Figure 1 ;

[0026] Figure 7 This is a schematic diagram of an embodiment of a self-propelled transplanter of the utility model. Figure 2 ;

[0027] Figure 8 This is a schematic diagram of an embodiment of a self-propelled transplanter of the utility model. Figure 3 .

[0028] Reference numerals:

[0029] 11. Engine base; 12. Front axle spindle; 13. Rotating hole; 14. Rotating pin; 15. Spring; 16. Mounting cavity; 17. Adjusting hole; 18. Adjusting pin; 2. First front wheel assembly; 21. Mounting spindle; 211. Adjusting section; 212. Mounting section; 213. Driving section; 214. Mounting hole; 215. Mounting pin; 22. Fixed bracket; 23. Adjusting bracket; 231. Driving plate; 232. Rotating sleeve; 233. Adjusting sleeve; 24. Electric push rod; 25. Adjusting rod; 26. Fixed sleeve; 261. Fixed hole; 27. Fixed pin; 28. Bearing; 29. ​​Articulating hole; 3. Second front wheel assembly; 41. Articulating pin; 42. Positioning bolt; 43. Positioning hole; 44. Adjusting hole; 45. Positioning pin. DETAILED DESCRIPTION

[0030] In order to be able to understand the features and technical contents of the embodiments of the utility model in more detail, the implementation of the embodiments of the utility model is described in detail below in conjunction with the accompanying drawings. The attached drawings are for reference only and are not used to limit the embodiments of the utility model. In the following technical description, for the convenience of explanation, a full understanding of the disclosed embodiments is provided through multiple details. However, one or more embodiments can still be implemented without these details. In other cases, to simplify the drawings, well-known structures and devices can be simplified for display.

[0031] The terms "first", "second", etc. in the specification and claims of the embodiments of the utility model and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so as to describe the embodiments of the embodiments of the utility model described here. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions.

[0032] In the embodiments of the present utility model, the terms "upper", "lower", "inside", "middle", "outside", "front", "back" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. These terms are mainly intended to better describe the embodiments of the present utility model and its embodiments, and are not intended to limit the indicated devices, elements or components to have specific directions, or to be constructed and operated in specific directions. Moreover, in addition to being used to indicate directions or positional relationships, some of the above terms may also be used to indicate other meanings. For example, the term "upper" may also be used to indicate a certain dependency or connection relationship in certain circumstances. For those of ordinary skill in the art, the specific meanings of these terms in the embodiments of the present utility model can be understood according to the specific circumstances.

[0033] In addition, the terms "disposed", "connected", and "fixed" should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements, or components. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the utility model can be understood according to specific circumstances.

[0034] Unless otherwise specified, the term "plurality" means two or more and "plurality" means two or more.

[0035] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present utility model can be combined with each other.

[0036] In the present invention, multi-dimensional adjustment means that the engine base 11 of the self-propelled transplanter is used as a reference, and the wheels of the first front wheel assembly 2 and the wheels of the second front wheel assembly 3 are used as observation objects, and the wheels can be adjusted in multiple directions such as up and down, left and right, and front and back.

[0037] like Figure 1 , Figure 2 As shown, the utility model discloses a front axle structure of a transplanter, which includes a front axle main shaft 12, a first front wheel assembly 2 and a second front wheel assembly 3. The first front wheel assembly 2 and the second front wheel assembly 3 are symmetrical structures, and the first front wheel assembly 2 and the second front wheel assembly 3 are respectively arranged at the two ends of the front axle main shaft 12. The front axle main shaft 12 is arranged at the front end of the engine base 11, and the engine base 11 is located in the middle position of the front axle main shaft 12. The front end of the engine base 11 is configured with a rotating hole 13, and the rotating hole 13 is arranged horizontally on the ground. The front axle main shaft 12 is also configured with a rotating hole 13. The rotating pin 14 is sequentially passed through the rotating hole 13 of the front axle main shaft 12 and the rotating hole 13 of the engine base 11, and the rotation connection between the front axle main shaft 12 and the engine base 11 is completed. The retractable and retractable structures of the first front wheel assembly 2 and the second front wheel assembly 3 are independent of the overall frame and do not affect the articulation between the front axle main shaft and the engine base. The front axle main shaft 12 can swing slightly around the rotating hole 13, thereby improving the driving stability of the self-propelled transplanter.

[0038] Optionally, although not shown in the figure, an oil circuit and an oil cup are constructed on the rotating pin 14, and butter can be injected into the oil cup and the butter enters the oil circuit through the oil cup to lubricate the connection between the front axle main shaft 12 and the engine base 11.

[0039] Optionally, not shown in the figure, the engine base 11 can also be expanded to install a vehicle battery, a transmission box, hydraulic components, transplanting operation auxiliary components and auxiliary components required by technical personnel in the field during transplanting.

[0040] Alternatively, if Figure 1 , Figure 2 As shown, a spring 15 is further provided between the front axle main shaft 12 and the engine base 11, and the spring 15 is used to assist the front axle main shaft 12 in resetting. One end of the spring 15 is fixed to the lower surface of the engine base 11 by bolts, and the other end of the spring 15 abuts against the front axle main shaft 12. Optionally, there are two springs 15, and the two springs 15 are respectively provided on both sides of the rotating pin 14. When the front axle main shaft 12 swings slightly around the rotating pin 14, the spring 15 can play a role in buffering and shock absorption.

[0041] like Figure 2 , Figure 3As shown, both ends of the front axle spindle 12 are configured with mounting cavities 16, and both ends of the front axle spindle 12 are configured with multiple distance adjustment holes 17 connected to the mounting cavities 16, and multiple distance adjustment holes 17 are evenly arranged along the length direction of the front axle spindle 12. Since the first front wheel assembly 2 and the second front wheel assembly 3 are mutually symmetrical structures, the first front wheel assembly 2 is taken as an example for introduction. The first front wheel assembly 2 includes a mounting spindle 21, a fixing bracket 22, an adjustment bracket 23, an electric push rod 24, and an adjustment rod 25. The mounting spindle 21 includes an adjustment section 211, a mounting section 212, and a driving section 213, and the adjustment section 211, the mounting section 212, and the driving section 213 are arranged in sequence from one end to the other end. The adjustment section 211 is configured with multiple distance adjustment holes 17, and multiple distance adjustment holes 17 are evenly arranged along the length direction of the mounting spindle 21. The adjustment section 211 of the mounting spindle 21 is arranged in the mounting cavity 16 of the mounting spindle 21. When it is necessary to adjust the wheelbase between the first front wheel assembly 2 and the second front wheel assembly 3 at a later stage, the adjustment section 211 can be made to slide in the mounting cavity 16. When the adjustment is completed, the adjusting hole 17 of the mounting spindle 21 corresponds to the adjusting hole 17 on the front axle spindle 12 one by one, and the adjusting pin 18 is used to penetrate the adjusting holes 17 of the two in sequence, and the fixed connection between the mounting spindle 21 and the front axle spindle 12 is completed. Such an arrangement can flexibly adjust the wheelbase between the first front wheel assembly 2 and the second front wheel assembly 3.

[0042] like Figure 2 As shown, at least two mounting holes 214 are constructed on the mounting section 212. A fixing sleeve 26 is provided at one end of the fixing frame 22, and the fixing sleeve 26 is also constructed with at least two mounting holes 214. A fixing hole 261 is constructed at the other end of the fixing frame 22. During installation, the fixing sleeve 26 is sleeved on the mounting section 212 of the mounting spindle 21, and the mounting holes 214 on the fixing sleeve 26 correspond to the mounting holes 214 on the mounting section 212 one by one, and then the mounting pin 215 is used to penetrate the mounting holes 214 of the two in sequence, and the fixing frame 22 and the mounting spindle 21 are fixedly connected. A fixing hole 261 is constructed on the electric push rod 24, and the fixing hole 261 of the electric push rod 24 is aligned with the fixing hole 261 of the fixing frame 22, and the fixing pin 27 is used to penetrate the fixing holes 261 of the two in sequence, and the electric push rod 24 and the fixing frame 22 are hinged.

[0043] like Figures 2 to 4As shown, the adjustment bracket 23 includes a driving plate 231, a rotating sleeve 232 and an adjusting sleeve 233. The axis of the rotating sleeve 232 is perpendicular to the axis of the adjusting sleeve 233, that is, the rotating sleeve 232 is perpendicular to the adjusting sleeve 233. The adjusting sleeve 233 is arranged at one end of the rotating sleeve 232, and one end of the driving plate 231 is arranged at the other end of the rotating sleeve 232. The bearing 28 is arranged in the rotating sleeve 232 and is located at the other end of the rotating sleeve 232. At this time, the inner ring of the bearing 28 is sleeved in the driving section 213, and the outer ring of the bearing 28 is clamped in the rotating sleeve 232. The rotating sleeve 232 is rotatably connected with the driving section 213 of the mounting main shaft 21 through the bearing 28. The telescopic end of the electric push rod 24 and the end of the driving plate 231 away from the rotating sleeve 232 are both configured with a hinge hole 29, the hinge hole 29 on the telescopic end of the electric push rod 24 is aligned with the hinge hole 29 on the driving plate 231, and the hinge pin 41 is used to penetrate the hinge holes 29 of the two in sequence, and the electric push rod 24 and the driving plate 231 are hinged. The adjustment sleeve 233 is tilted on the driving plate 231, and there is an angle between the two.

[0044] Optionally, the bearing 28 may be a thrust bearing 28. When the first front wheel assembly 2 and the second front wheel assembly 3 are not level, the thrust bearing 28 may bear the axial force between the mounting spindle 21 and the driving plate 231.

[0045] Optionally, the electric push rod 24 may be replaced by a hydraulic cylinder, which can also play the role of retracting and extending the first front wheel assembly 2 and the second front wheel assembly 3.

[0046] Alternatively, if Figure 3 As shown, a positioning bolt 42 is also provided at the end of the driving section 213 on which the main shaft 21 is mounted, so as to axially position the driving plate 231 .

[0047] like Figure 4 As shown, the adjusting rod 25 is provided with a plurality of positioning holes 43, and the plurality of positioning holes 43 are evenly arranged along the longitudinal direction of the adjusting rod 25. A wheel is hinged at the bottom end of the adjusting rod 25. The adjusting sleeve 233 is provided with a plurality of adjustment holes 44, and the plurality of adjustment holes 44 are evenly arranged along the longitudinal direction of the adjusting sleeve 233. The adjusting rod 25 is arranged in the adjusting sleeve 233, and the adjusting rod 25 can move along the longitudinal direction of the adjusting sleeve 233. When the height adjustment is completed, an adjustment hole 44 on the adjusting rod 25 is aligned with a positioning hole 43 on the adjusting rod 25, and the adjustment hole 44 of the adjusting rod 25 and the positioning hole 43 of the adjusting rod 25 are penetrated in sequence by the positioning pin 45, and the two are fixed, so that the height adjustment of the wheel can be realized.

[0048] Alternatively, if Figure 4 , Figure 5As shown, the distance between two adjacent positioning holes 43 is L1, and the distance between two adjacent adjustment holes 44 is L2, where L2=1.5L1. This enables the adjustment rod 25 to adjust the height from the ground with 0.5 times L1 as the distance unit.

[0049] The utility model also discloses a self-propelled transplanter, comprising the transplanter front axle structure as described in any one of the above embodiments.

[0050] Application scenario 1 of an exemplary embodiment:

[0051] like Figures 1 to 6 As shown, Figure 6 This is a typical hilly and mountainous driving condition. There is a height difference h between the left and right ground. At this time, the first front wheel assembly 2 is retracted, the telescopic end of the electric push rod 24 is extended, and the drive plate 231 is pushed to rotate around the rotating sleeve 232, and the adjustment sleeve 233 rotates with the rotating sleeve 232. The adjustment rod 25 is provided with a wheel with the rotating sleeve 232 as the axis, and rotates toward the rear wheel of the self-propelled transplanter. When there is also a height difference h between the wheel of the first front wheel assembly 2 and the wheel of the second front wheel assembly 3, the electric push rod 24 stops working, so that the height of one side wheel of the self-propelled transplanter can be adjusted. By retracting the first front wheel assembly 2 to a certain height and coordinating the height adjustment of the rear wheel, the self-propelled transplanter can be driven smoothly.

[0052] Application scenario 2 of an exemplary embodiment:

[0053] like Figures 1 to 5 , Figure 7 , Figure 8 As shown, Figure 7 In order to operate in the field and cross the ridge, the self-propelled transplanter of the utility model needs to switch to another ridge to continue the operation after completing the planting operation of one ridge. Due to the small space for driving and turning in the field, it can only directly cross the ridge surface. Before crossing the ridge, the first front wheel assembly 2 and the second front wheel assembly 3 are retracted at the same time. Because the first front wheel assembly 2 and the second front wheel assembly 3 are symmetrical structures, the first front wheel assembly 2 is taken as an example for introduction. When the first front wheel assembly 2 is retracted, the telescopic end of the electric push rod 24 extends and pushes the drive plate 231 to rotate around the rotating sleeve 232, and the adjustment sleeve 233 rotates with the rotating sleeve 232. The adjustment rod 25 is provided with a wheel with the rotating sleeve 232 as the axis, and rotates toward the rear wheel of the self-propelled transplanter. When the adjustment rod 25 is parallel to the ground, the electric push rods 24 of the first front wheel assembly 2 and the second front wheel assembly 3 stop working at the same time, so that the height of the wheels on both sides of the self-propelled transplanter can be adjusted at the same time. Figure 8The operator only needs to press down the handrail to keep the vehicle balanced, so that the self-propelled transplanter can cross the ridge surface in a horizontal posture, which can avoid damaging the ridge surface and seedlings and is convenient for the operator to operate.

[0054] The above description and the accompanying drawings fully illustrate the embodiments of the utility model so that those skilled in the art can practice them. Other embodiments may include structural and other changes. The embodiments represent only possible variations. Unless explicitly required, individual components and functions are optional, and the order of operations may vary. Parts and features of some embodiments may be included in or replace parts and features of other embodiments. The embodiments of the utility model are not limited to the structures described above and shown in the accompanying drawings, and various modifications and changes may be made without departing from the scope thereof. The scope of the utility model is limited only by the appended claims.

Claims

1. A transplanter front axle structure, characterized in that: include: A front axle main shaft (12), the middle portion of which is rotatably connected to the engine base (11); A first front wheel assembly (2) and a second front wheel assembly are respectively arranged at two ends of the front axle main shaft (12); The first front wheel assembly (2) and the second front wheel assembly are symmetrical structures; The first front wheel assembly (2) comprises: A main shaft (21) is installed, one end of which is telescopically arranged on the front axle main shaft (12); An adjustment bracket (23) is rotatably arranged at the other end of the mounting spindle (21); An electric push rod (24) is arranged on the mounting main shaft (21); the telescopic end of the electric push rod (24) is rotatably connected to the adjustment bracket (23); The adjusting rod (25) is movably connected to the adjusting bracket (23).

2. The front axle structure of the transplanter according to claim 1, characterized in that: Also includes: A fixing frame (22) is arranged on the mounting spindle (21); The electric push rod (24) is arranged on the fixing frame (22) and is rotatably connected to the fixing frame (22).

3. The front axle structure of the transplanter according to claim 1, characterized in that: The adjusting bracket (23) comprises: A driving plate (231) is sleeved on the mounting main shaft (21); the telescopic end is rotatably connected to the driving plate (231); The adjusting sleeve (233) is obliquely arranged on the driving plate (231); the adjusting rod (25) is telescopically arranged in the adjusting sleeve (233).

4. The front axle structure of the transplanter according to claim 3, characterized in that: The driving plate (231) is connected to the mounting spindle (21) via a bearing (28).

5. The front axle structure of the transplanter according to claim 3, characterized in that: The adjusting rod (25) is provided with a plurality of positioning holes (43), and the plurality of positioning holes (43) are evenly distributed along the longitudinal direction of the adjusting rod (25).

6. The front axle structure of the transplanter according to claim 5, characterized in that: The adjustment sleeve (233) is provided with a plurality of adjustment holes (44), and the plurality of adjustment holes (44) are evenly distributed along the longitudinal direction of the adjustment sleeve (233).

7. The front axle structure of the transplanter according to claim 6, characterized in that: The distance between two adjacent positioning holes (43) is L1; The distance between two adjacent adjustment holes (44) is L2; ​​L2=1.5L1.

8. The transplanter front axle structure according to claim 1, characterized in that: A spring (15) is provided between the front axle main shaft (12) and the engine base (11).

9. The transplanter front axle structure according to claim 1, characterized in that: The bottom end of the adjusting rod (25) is provided with a wheel.

10. A self-propelled transplanter, characterized in that: include: A transplanter front axle structure according to any one of claims 1 to 9.

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