Grass winding prevention cutter shaft fixing device
By installing an anti-grass entanglement fixing device on the rotating cutter shaft, and using the rotating seat and grass blocking assembly to form a blocking ring, the problem of grass entanglement on the rotating cutter shaft is solved, and the working reliability of agricultural machinery is improved.
Patent Information
- Application Number
- CN202423074226.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-12
- Publication Date
- 2025-10-31
- Estimated Expiration
- 2034-12-12
AI Technical Summary
The rotating cutter shaft is prone to getting tangled in hay during operation, which can cause transmission shaft failure and affect the normal operation of agricultural machinery.
A blade shaft fixing device for preventing grass tangling is designed, including a fixed seat, a rotating seat, and a grass blocking assembly. By setting first and second blocking rings on the rotating seat, grass is prevented from entering the rotation gap, thus avoiding tangling.
It effectively prevents forage from getting tangled on the drive shaft of the rotating cutter shaft, reducing malfunctions and improving the reliability of agricultural machinery.
Smart Images
Figure CN223488689U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of agricultural machinery technology, and in particular to a blade shaft fixing device to prevent grass from getting tangled. Background Technology
[0002] Rotary tillers and other agricultural machinery typically have a rotating cutter shaft horizontally positioned at the front of the machine body. As the machine moves forward, the rotation of the cutter shaft cuts away the grass and tills the soil along the path. Since the rotating cutter shaft and the machine's drive unit are connected by a transmission shaft, grass may sometimes become entangled on the transmission shaft of the rotating cutter shaft while it is rotating. Utility Model Content
[0003] To solve the above-mentioned technical problems, this utility model provides a blade shaft fixing device to prevent grass entanglement, the specific technical solution of which is as follows:
[0004] A blade shaft fixing device for preventing grass tangling includes:
[0005] Mounting bracket, used to fix it to the machine body;
[0006] A rotating seat is rotatably connected to the fixed seat. One end passes through the fixed seat to form a rotating shaft, and the other end is used to connect to the end of the cutter shaft. A first rotational gap is formed between the rotating seat and the fixed seat, and a second rotational gap is formed between the rotating seat and the end of the cutter shaft.
[0007] The forage blocking assembly is connected to the rotating seat and can rotate with the rotating seat to form a first blocking ring covering the outside of the first rotation gap and a second blocking ring covering the outside of the second rotation gap.
[0008] Preferably, the forage barrier assembly includes:
[0009] The first blocking block has one end connected to the outer periphery of the rotating seat and the other end extending toward the fixed seat.
[0010] The second blocking block has one end connected to the outer periphery of the rotating seat and the other end extending toward the cutter shaft.
[0011] Preferably, the first blocking block and the second blocking block are located on opposite sides of the rotating seat.
[0012] Preferably, the rotating seat has a triangular structure, and one end of the rotating seat connected to the cutter shaft is provided with multiple mounting parts, which are distributed in the triangular area of the triangular structure.
[0013] Preferably,
[0014] The first blocking block is located on the side of the triangular region away from the mounting portion;
[0015] The second blocking block is located between the two mounting parts.
[0016] Preferably, the mounting part includes a fixing bolt, the fixing bolt is threaded to the triangular region, and the first blocking block has a mounting groove relative to the position of the fixing bolt.
[0017] Preferably, a bearing is provided between the rotating shaft and the fixed seat.
[0018] Preferably, a combined oil seal is provided between the rotating shaft and the fixed seat, the combined oil seal being used to isolate the bearing from the first rotational clearance.
[0019] The anti-tangle cutting shaft fixing device provided by this utility model, by rotatably setting a rotating seat for connecting the cutting shaft on the fixed seat, and setting a grass blocking component on the rotating seat, so that when the rotating seat rotates, the grass blocking component can form a first blocking ring and a second blocking ring, thereby preventing grass from entering from the first rotation gap between the fixed seat and the rotating seat and the second rotation gap between the rotating seat and the cutting shaft, thus avoiding grass from getting tangled in them, and solving the problem in the background art. Attached Figure Description
[0020] 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 only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0021] Figure 1 A three-dimensional structural schematic diagram of the anti-tangle grass-fixing device provided for an embodiment of this utility model;
[0022] Figure 2 An exploded view of the anti-tangle grass-fixing device provided for an embodiment of this utility model;
[0023] Figure 3 A cross-sectional side view of the anti-tangle grass cutting shaft fixing device provided in this embodiment of the utility model.
[0024] Figure Labels
[0025] 1-Fixed base;
[0026] 2-Rotating seat; 21-Rotating shaft; 22-First rotation clearance; 23-Second rotation clearance; 24-Mounting part; 241-Fixing bolt; 25-Bearing; 26-Combination oil seal;
[0027] 3-Forage blocking component; 31-First blocking block; 311-Mounting slot; 32-Second blocking block. Detailed Implementation
[0028] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be described in detail below with reference to the accompanying drawings. The description in this part is only exemplary and explanatory, and should not be used to limit the scope of protection of this utility model in any way.
[0029] It should be noted that similar labels in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.
[0030] It should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use. They are only for the convenience of describing the present invention 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 limitations on the present invention. In addition, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.
[0031] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.
[0032] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0033] Please see Figures 1 to 3 This embodiment provides a blade shaft fixing device for preventing grass tangling, including a fixing seat 1, a rotating seat 2, and a grass blocking component 3.
[0034] The mounting base 1 is used to fix it to the machine body.
[0035] Rotary seat 2 is rotatably connected to fixed seat 1. One end passes through fixed seat 1 to form a rotating shaft 21, and the other end is used to connect to the end of the cutter shaft. A first rotational gap 22 is formed between rotating seat 2 and fixed seat 1, and a second rotational gap 23 is formed between rotating seat 2 and the end of cutter shaft.
[0036] The forage blocking assembly 3 is connected to the rotating seat 2 and can rotate with the rotating seat 2 to form a first blocking ring covering the outside of the first rotation gap 22 and a second blocking ring covering the outside of the second rotation gap 23.
[0037] The rotating shaft 21 is connected to the drive device of the machine body and is driven to rotate by the drive device, thereby causing the rotating seat 2 to rotate relative to the fixed seat 1. The grass blocking component 3 can be a block or an annular baffle. The grass blocking component 3 is located at the relative outer edge of the first rotation gap 22 and the second rotation gap 23. When the rotating seat 2 rotates, the grass blocking component 3 rotates synchronously and forms a first blocking ring and a second blocking ring around the outer edge of the first rotation gap 22 and the second rotation gap 23, thereby preventing grass from entering the fixed seat 1 and the rotating seat 2 from the first rotation gap 22 and the second rotation gap 23, and avoiding grass from getting tangled in them.
[0038] The anti-tangle cutting shaft fixing device provided in this embodiment, by rotatably setting a rotating seat 2 for connecting the cutting shaft on the fixed seat 1, and setting a grass blocking component 3 on the rotating seat 2, allows the grass blocking component 3 to form a first blocking ring and a second blocking ring when the rotating seat 2 rotates, thereby preventing grass from entering from the first rotation gap 22 between the fixed seat 1 and the rotating seat 2 and the second rotation gap 23 between the rotating seat 2 and the cutting shaft, thus avoiding grass from getting tangled therein, and solving the problem in the background art.
[0039] Further, please see Figure 2 The grass blocking component 3 includes a first blocking block 31 and a second blocking block 32.
[0040] One end of the first blocking block 31 is connected to the outer periphery of the rotating seat 2, and the other end extends toward the fixed seat 1, thereby forming a first blocking ring covering the outside of the first rotation gap 22 when rotating.
[0041] One end of the second blocking block 32 is connected to the outer periphery of the rotating seat 2, and the other end extends toward the direction of the cutter shaft, thereby forming a second blocking ring covering the outside of the second rotation gap 23 when rotating.
[0042] Furthermore, the first blocking block 31 and the second blocking block 32 are located on opposite sides of the rotating seat 2, respectively, to block the grass in the first rotating gap 22 and the second rotating gap 23.
[0043] Furthermore, the rotating seat 2 has a triangular structure, and a plurality of mounting parts 24 are provided at one end of the rotating seat 2 connected to the cutter shaft. The mounting parts 24 are distributed in the triangular area of the triangular structure.
[0044] Specifically, the triangular structure is a rounded triangle, with a mounting part 24 at each of the three corners, so that the cutter shaft can be mounted on the rotating seat 2.
[0045] Further reading is available upon request. Figure 2 In the embodiments provided in this implementation:
[0046] The first blocking block 31 is located on the side of the triangular area away from the mounting part 24.
[0047] The second blocking block 32 is located between the two mounting parts 24.
[0048] Specifically, the axial distance between the first blocking block 31 and the rotating seat 2 is greater than the axial distance between the second blocking block 32 and the rotating seat 2. Since the first rotation gap 22 is the gap between the fixed seat 1 and the rotating seat 2, the first blocking block 31 needs to be able to cover the outer part of the fixed seat 1. The second rotation gap 23 is the gap between the rotating seat 2 and the cutter shaft, that is, the gap between the mounting part 24 and the rotating seat 2. The second blocking block 32 only needs to prevent the grass from entering the second rotation gap 23. Therefore, the axial distance between the second blocking block 32 and the rotating seat 2 can be the same as the axial distance between the mounting part 24 and the rotating seat 2. Thus, the axial distance between the first blocking block 31 and the rotating seat 2 can be greater than the axial distance between the second blocking block 32 and the rotating seat 2.
[0049] Further reading is available upon request. Figure 2 The mounting part 24 includes a fixing bolt 241, which is threaded to the triangular area. The first blocking block 31 has a mounting groove 311 relative to the fixing bolt 241 to facilitate the installation of the fixing bolt 241 in the triangular area of the rotating seat 2.
[0050] Further, please see Figure 3 A bearing 25 is provided between the rotating shaft 21 and the fixed seat 1. The inner ring of the bearing 25 is fitted onto the rotating shaft 21, and the outer ring is engaged in the fixed seat 1, thereby reducing the rotational friction between the rotating seat 2 and the fixed seat 1.
[0051] Furthermore, a combined oil seal 26 is provided between the rotating shaft 21 and the fixed seat 1. The combined oil seal 26 is used to isolate the bearing 25 from the first rotational clearance 22.
[0052] Specifically, the bearing 25 is located at the end of the rotating seat 2 away from the first rotation gap 22, and the combined oil seal 26 is located at the other end of the rotating seat 2, thereby isolating the first rotation gap 22 and the bearing 25. When the cutter shaft rotates, the cutter shaft will roll up a lot of dust, which may enter the bearing 25 through the first rotation gap 22 and damage it. Therefore, the combined oil seal 26 can be set between the bearing 25 and the first rotation gap 22 to prevent dust from entering the bearing 25 from the first rotation gap 22. Since the combined oil seal 26 is a conventional technical means, it will not be described in detail in this embodiment.
[0053] Working principle:
[0054] The rotating shaft 21 is connected to the drive device of the machine body and is driven to rotate by the drive device, thereby causing the rotating seat 2 to rotate relative to the fixed seat 1. The grass blocking component 3 can be a block or an annular baffle. The grass blocking component 3 is located at the relative outer edge of the first rotation gap 22 and the second rotation gap 23. When the rotating seat 2 rotates, the grass blocking component 3 rotates synchronously and forms a first blocking ring and a second blocking ring around the outer edge of the first rotation gap 22 and the second rotation gap 23, thereby preventing grass from entering the fixed seat 1 and the rotating seat 2 from the first rotation gap 22 and the second rotation gap 23, and avoiding grass from getting tangled in them.
[0055] It should be noted that, in this document, the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.
[0056] This article uses specific examples to illustrate the principles and implementation methods of this utility model. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of this utility model. The above are only preferred embodiments of this utility model. It should be noted that due to the limitations of textual expression, while there are objectively infinite specific structures, those skilled in the art can make several improvements, modifications, or changes without departing from the principles of this utility model, and can also combine the above technical features in an appropriate manner. These improvements, modifications, changes, or combinations, or the direct application of the concept and technical solution of the utility model to other occasions without modification, should all be considered within the protection scope of this utility model.
Claims
1. A blade shaft fixing device for preventing grass entanglement, characterized in that, include: Fixing base (1), used to fix it to the machine body; Rotary seat (2) is rotatably connected to the fixed seat (1). One end passes through the fixed seat (1) to form a rotating shaft (21), and the other end is used to connect to the end of the cutter shaft. A first rotational gap (22) is formed between the rotating seat (2) and the fixed seat (1), and a second rotational gap (23) is formed between the rotating seat (2) and the end of the cutter shaft. The forage blocking assembly (3) is connected to the rotating seat (2) and can rotate with the rotating seat (2) to form a first blocking ring covering the outside of the first rotating gap (22) and a second blocking ring covering the outside of the second rotating gap (23).
2. The anti-tangle grass-fixing device according to claim 1, characterized in that, The forage barrier assembly (3) includes: The first blocking block (31) has one end connected to the outer periphery of the rotating seat (2) and the other end extending toward the fixed seat (1); The second blocking block (32) is connected at one end to the outer periphery of the rotating seat (2) and at the other end extends toward the direction of the cutter shaft.
3. The anti-tangle grass-fixing device according to claim 2, characterized in that, The first blocking block (31) and the second blocking block (32) are located on opposite sides of the rotating seat (2).
4. The anti-tangle grass-fixing device according to claim 3, characterized in that, The rotating seat (2) has a triangular structure. The rotating seat (2) is connected to the end of the cutter shaft and has multiple mounting parts (24). The mounting parts (24) are distributed in the triangular area of the triangular structure.
5. The anti-tangle grass-fixing device according to claim 4, characterized in that: The first blocking block (31) is located on the side of the triangular region away from the mounting part (24); The second blocking block (32) is located between the two mounting parts (24).
6. The anti-tangle grass-fixing device according to claim 5, characterized in that, The mounting part (24) includes a fixing bolt (241), which is threaded to the triangular area. The first blocking block (31) has a mounting groove (311) at the position of the fixing bolt (241).
7. The anti-tangle grass-fixing device according to claim 1, characterized in that, A bearing (25) is provided between the rotating shaft (21) and the fixed seat (1).
8. The anti-tangle grass-fixing device according to claim 7, characterized in that, A combined oil seal (26) is also provided between the rotating shaft (21) and the fixed seat (1), the combined oil seal (26) being used to isolate the bearing (25) and the first rotational clearance (22).