Adjustable device for fixed cutter of hay cutter
By designing a hay cutter adjustable device, the adjustment of the gap between the moving fixed knife is achieved by using the principle of adjusting wire and lever, which solves the time-consuming and troublesome problem of adjusting the gap between the moving fixed knife in the prior art, and improves efficiency and convenience.
Patent Information
- Application Number
- CN202422153811.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-03
- Publication Date
- 2025-06-10
- Estimated Expiration
- 2034-09-03
AI Technical Summary
After the existing hay cutters sharpen the blade, the gap between the fixed knife becomes larger. When adjusting the gap between the fixed knife, multiple sets of bolts need to be adjusted, which is time-consuming and troublesome.
A hay cutter adjustable device is designed to adjust the nut on the wire, and the lever principle is used to move the fixed knife back and forth, so as to adjust the gap between the moving fixed knife without adjusting the moving knife.
The movement of the fixed tool can be achieved by adjusting a few bolts, which simplifies the adjustment process of the moving fixed tool clearance, saves time and improves efficiency.
Smart Images
Figure CN222954456U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of auxiliary structures for fixed knives of hay cutters, and particularly relates to an adjustable device for the fixed knife of a hay cutter. Background Art
[0002] At present, the rotary knife hay cutter is widely used in the market. The moving knife of the rotary knife hay cutter needs to be sharpened after being used for a period of time. However, after the moving knife is sharpened, it becomes shorter. Once it becomes shorter, the gap between the moving knife and the fixed knife becomes larger. Currently, to adjust the gap between the moving knife and the fixed knife, the bolts fixing the moving knife are loosened. There are long holes on the moving knife, and the moving knife is moved to adjust the gap. The fixed knife is fixed and cannot move. Adjusting the moving knife is very troublesome because there are at least 2 sets of bolts for fixing one moving knife. Each rotor group of a hay cutter has 3 - 16 moving knives, and some large models even exceed 20. Therefore, it is very time-consuming to adjust the gap between the moving knife and the fixed knife each time. There is an urgent need for a simple and convenient technical device to solve this problem. Content of the Utility Model
[0003] Aiming at the above deficiencies in the prior art, the utility model provides an adjustable device for the fixed knife of a hay cutter, which realizes the adjustment of the fixed knife without adjusting the moving knife.
[0004] In order to achieve the above utility model purpose, the technical solution adopted by the utility model is as follows:
[0005] An adjustable device for the fixed knife of a hay cutter includes: a fixed knife fixing plate. On both sides of the fixed knife fixing plate, there are hay cutter wallboards. In the middle of the hay cutter wallboards, a rotating shaft is installed. An adjusting swing arm is sleeved outside the rotating shaft. In the middle of the hay cutter wallboards, an adjusting wire fixing shaft is installed. An adjusting wire is installed on the adjusting wire fixing shaft. The adjusting nut of the adjusting wire is connected to the adjusting swing arm. The fixed knife is fixed by a screw rod on the fixed knife fixing plate, and after the fixed knife and the fixed knife fixing plate are combined, both ends are connected to the adjusting swing arm.
[0006] Furthermore, the shape of the fixed knife is a trapezoid with a wider upper edge and a narrower lower edge.
[0007] Furthermore, positioning bolts are installed on both sides of the fixed knife fixing plate and the adjusting swing arm. A positioning bolt bracket is sleeved outside the positioning bolts. The positioning bolts and the positioning bolt brackets are installed on the hay cutter wallboards, that is, the number of both the positioning bolts and the positioning bolt brackets is 4.
[0008] Furthermore, there is a locking nut outside the positioning step of the adjusting swing arm.
[0009] Furthermore, the adjusting wire is a combined component of a shaft sleeve and a bolt.
[0010] Further, there is a connection hole connecting to the fixed knife fixing plate below the adjustment rocker arm; there is a rotating shaft hole adapted to the rotating shaft in the middle; there is an adjustment screw hole adapted to the adjustment screw at the upper part, and the adjustment screw hole is a strip hole.
[0011] The beneficial effects of the present utility model are as follows:
[0012] When it is necessary to adjust the gap between the moving knife and the fixed knife, there is no need to adjust the moving knife of the rotor group. Only need to adjust the adjusting nut on the adjusting screw, and make the fixed knife move back and forth through the lever principle to realize the adjustment of the gap size between the moving knife and the fixed knife. After the adjustment is completed, lock the adjusting nut on the adjusting screw and the positioning bolts on the left and right sides to lock the position of the fixed knife. Through this solution, there is no need to adjust the moving knife, and only need to adjust a few bolts to move the fixed knife, which is very convenient to adjust the gap between the moving knife and the fixed knife, and the gap adjustment of the moving knife and the fixed knife is completed simply, conveniently and time-saving. Description of the Drawings
[0013] Figure 1 is the structural schematic diagram of the present utility model;
[0014] Figure 2 is the side structural diagram of the present utility model;
[0015] Figure 3 is the structural schematic diagram of the present utility model with the adjustment screw installed;
[0016] Figure 4 is the side structural schematic diagram of the adjustment rocker arm of the present utility model;
[0017] Figure 5 is the front structural schematic diagram of the adjustment rocker arm of the present utility model;
[0018] List of Corresponding Reference Numerals in the Drawings:
[0019] 1 - Fixed knife fixing plate, 2 - Rotating shaft, 3 - Wall panel of the hay cutter, 4 - Adjustment screw fixing shaft, 5 - Adjustment screw, 6 - Adjustment rocker arm, 7 - Positioning bolt, 8 - Positioning bolt bracket, 9 - Fixed knife, 10 - Moving knife. Detailed Embodiment
[0020] The following further illustrates the detailed embodiment of the present utility model with reference to the drawings. The same components are denoted by the same reference numerals. It should be noted that the terms "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to the directions in the drawings, and the terms "inner" and "outer" respectively refer to the directions towards or away from the geometric center of a specific component.
[0021] In order to make the content of the present utility model be more clearly understood, the technical solutions in the embodiments of the present utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the present utility model.
[0022] AsFigures 1 to 5 As shown in the figure, a fixed knife adjustable device for a straw cutter includes: a fixed knife fixing plate 1. On both sides of the fixed knife fixing plate 1, there are straw cutter wall plates 3. In the middle of the straw cutter wall plates 3, a rotating shaft 2 is installed. An adjusting rocker arm 6 is sleeved outside the rotating shaft 2. In the middle of the straw cutter wall plates 3, an adjusting wire fixing shaft 4 is installed. An adjusting wire 5 is installed on the adjusting wire fixing shaft 4. The adjusting nut of the adjusting wire 5 is connected to the adjusting rocker arm 6. The fixed knife fixing plate 1 fixes the fixed knife 9 through a screw. After the combination of the fixed knife 9 and the fixed knife fixing plate 1, both ends are connected to the adjusting rocker arm 6.
[0023] As Figure 2 shown: The shape of the fixed knife 9 is a trapezoid with a wide upper cutting edge and a narrow lower cutting edge. Positioning bolts 7 are installed on both sides of the fixed knife fixing plate 1 and the adjusting rocker arm 6. A positioning bolt bracket 8 is sleeved outside the positioning bolt 7. The positioning bolt 7 and the positioning bolt bracket 8 are installed on the straw cutter wall plate 3, that is, the number of the positioning bolt 7 and the positioning bolt bracket 8 is 4 each. There is a locking nut outside the positioning step of the adjusting rocker arm 6. The adjusting wire 5 is a combined part of a shaft sleeve and a bolt.
[0024] As Figure 5 shown: There is a connection hole connecting to the fixed knife fixing plate 1 below the adjusting rocker arm 6; there is a rotating shaft hole adapted to the rotating shaft 2 in the middle; there is an adjusting wire hole adapted to the adjusting wire 5 in the upper part, and the adjusting wire hole is a strip hole.
[0025] When it is necessary to adjust the clearance between the moving knife and the fixed knife, it is not necessary to adjust the moving knife 10 of the rotor group. Only the adjusting nut on the adjusting wire 5 needs to be adjusted. Through the lever principle, the fixed knife moves back and forth to realize the adjustment of the clearance between the moving knife and the fixed knife. After the adjustment is completed, lock the adjusting nut on the adjusting wire 5 and the positioning bolts 7 on the left and right sides to lock the position of the fixed knife. Through this solution, it is not necessary to adjust the moving knife. Only a few bolts need to be adjusted to move the fixed knife, which is very convenient to adjust the clearance between the moving knife and the fixed knife, and the clearance adjustment of the moving knife and the fixed knife is completed simply, conveniently and time-saving.
[0026] The above are only the preferred embodiments of the utility model patent, and are not intended to limit the utility model patent. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the utility model patent shall be included in the protection scope of the utility model patent.
Claims
1. A fixed blade adjustable device for a grass mower, characterized in that: include: A fixed blade fixing plate (1), wherein both sides of the fixed blade fixing plate (1) are provided with a grass cutter wall plate (3), a rotating shaft (2) is installed in the middle of the grass cutter wall plate (3), an adjusting rocker arm (6) is sleeved on the outer side of the rotating shaft (2), an adjusting wire fixing shaft (4) is installed in the middle of the grass cutter wall plate (3), an adjusting wire (5) is installed on the adjusting wire fixing shaft (4), an adjusting nut of the adjusting wire (5) is connected to the adjusting rocker arm (6), the fixed blade fixing plate (1) fixes the fixed blade (9) by means of a screw, and the fixed blade (9) and the fixed blade fixing plate (1) are combined, and the two ends of the fixed blade (9) are connected to the adjusting rocker arm (6).
2. The adjustable fixed blade device of a grass mower according to claim 1, characterized in that: The fixed knife (9) is in the shape of a trapezoid with a wide upper cutting edge and a narrow lower cutting edge.
3. The adjustable fixed blade device of a grass mower according to claim 1, characterized in that: Positioning bolts (7) are installed on both sides of the fixed blade fixing plate (1) and the adjusting rocker arm (6); a positioning bolt frame (8) is sleeved on the outer side of the positioning bolt (7); and the positioning bolts (7) and the positioning bolt frame (8) are installed on the wall plate (3) of the grass mower, that is, the number of the positioning bolts (7) and the positioning bolt frame (8) is 4.
4. The adjustable fixed blade device of a grass mower according to claim 1, characterized in that: A locking nut is arranged outside the positioning step of the adjusting rocker arm (6).
5. The adjustable fixed blade device of a grass mower according to claim 1, characterized in that: The adjusting wire (5) is a combination of a shaft sleeve and a bolt.
6. The adjustable fixed blade device of a grass mower according to claim 1, characterized in that: The adjusting rocker arm (6) has a connection hole connected to the fixed knife fixing plate (1) at the bottom, a rotating shaft hole adapted to the rotating shaft (2) at the middle, and an adjusting thread hole adapted to the adjusting thread (5) at the top, and the adjusting thread hole is a strip-shaped hole.