New type of grass special-purpose harvesting blade guard

Abstract

This utility model discloses a novel forage harvester blade protector, belonging to the technical field of blade protectors. It includes an upper pressure plate and a bottom support plate, with a gap between the upper pressure plate and the bottom support plate for the blade to pass horizontally. One end of the upper pressure plate has a mounting hole, and the other end has at least one forward extension. The end of the forward extension away from the mounting hole is pointed, and both sides of the forward extension near the mounting hole have horizontally arranged first serrated strips. One end of the bottom support plate has a fixing hole, and the other end of the bottom support plate has support members corresponding to the forward extensions. The distance between the support members and the fixing hole is less than the distance between the forward extensions and the mounting holes. This novel forage harvester blade protector with the above structure is simple in structure and low in manufacturing cost. It can achieve all-round protection for the cutter blade, while reducing the resistance when the cutter blade is pulled out, resulting in good cutting effect and thus improving cutting efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of blade protector technology, and in particular relates to a new type of blade protector for harvesting forage. Background Technology

[0002] A blade guard is a component used to protect the blade and also assists in harvesting crops. However, blade guards have the following problems in practical applications: 1. Existing blade guards are generally located on one side of the blade, providing insufficient protection. Collisions with sand and gravel easily cause wear and deformation of the blade. Deformation can lead to jamming during blade movement, and wear reduces the blade's sharpness, thus decreasing harvesting effectiveness and efficiency. 2. Existing blade guards are generally cast parts. Contact with sand and gravel easily causes deformation or even breakage. Deformation increases frictional resistance during blade movement, causing jamming and affecting harvesting effectiveness and efficiency. Once the blade guard deforms to a certain extent or breaks, the entire casting must be discarded and replaced with a completely new one. This not only wastes resources but also requires significant time for replacement and assembly.

[0003] To solve the above problems, a new type of blade guard is needed. Utility Model Content

[0004] The purpose of this invention is to provide a new type of forage harvester blade protector with a simple structure and low manufacturing cost. It can provide all-round protection for the cutter blade, reduce the resistance when the cutter blade is pulled, and improve the cutting effect and thus improve the cutting efficiency.

[0005] To achieve the above objectives, this utility model provides a novel forage harvester blade guard, comprising an upper pressure plate and a bottom support plate. A gap is provided between the upper pressure plate and the bottom support plate for the blade to pass horizontally. The top surface of one end of the upper pressure plate is provided with a mounting hole, and the other end of the upper pressure plate is provided with at least one forward extension. The end of the forward extension away from the mounting hole is a pointed end. Both sides of the forward extension near the mounting hole are provided with horizontally arranged first serrated strips. One end of the bottom support plate is provided with a fixing hole, and the other end of the bottom support plate is provided with a support member corresponding to the forward extension. The distance between the support member and the fixing hole is less than the distance between the forward extension and the mounting hole.

[0006] Preferably, a bottom blade is fixedly connected to one side of the front extension near the bottom support plate. A second serrated bar is provided on both sides of the bottom blade. The central axis of the bottom blade and the front extension overlap, and the width of the bottom blade in the length direction of the serrated bar is smaller than the width of the front extension in the length direction of the serrated bar.

[0007] Preferably, a connecting rod is fixedly connected between all the bottom blades on the same upper pressure plate.

[0008] Preferably, the upper pressure plate has a protrusion located between the mounting hole and the extension member, and the distance between the protrusion and the blade gradually increases and then gradually decreases from the end closer to the mounting hole to the end farther away from the mounting hole.

[0009] Preferably, the support member has a recessed portion at its root, and the distance between the recessed portion and the blade gradually increases and then gradually decreases from the end near the fixing hole to the end away from the fixing hole. The support member has a horizontal support block at its end that contacts and connects with the blade.

[0010] Therefore, the novel forage harvester blade guard of this utility model, which adopts the above-described structure, has the following beneficial effects:

[0011] 1. The traditional casting method for blade guards is changed to steel plate cutting method, which simplifies the casting parts, reduces the production cost, and makes it easier to repair and replace the blade guard if it deforms or even breaks.

[0012] 2. The use of the upper pressure plate and the bottom support plate can achieve all-round protection for the blades, preventing them from being worn and deformed due to collisions with sand and gravel, thus improving the service life of the blades and ensuring harvesting effect and efficiency.

[0013] 3. The blade protector's protection of the blades and its ease of maintenance prevent deformation of both the blades and the blade protector, thereby reducing frictional resistance between them and ensuring harvesting quality and efficiency.

[0014] The technical solution of this utility model will be further described in detail below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of an embodiment of a novel forage harvester blade guard of this utility model;

[0016] Figure 2 This is a schematic diagram of another embodiment of the novel forage harvester blade guard of this utility model from another perspective;

[0017] Figure 3 This is a schematic diagram of the installation state of an embodiment of the novel forage harvester blade guard of this utility model;

[0018] Figure 4 This is a structural schematic diagram of an embodiment of the present invention, showing the installation state of a novel forage harvester blade protector.

[0019] In the diagram: 1. Upper pressure plate; 2. Bottom support plate; 3. Blade; 4. Mounting hole; 5. Tip; 6. First serrated blade; 7. Fixing hole; 8. Bottom blade; 9. Second serrated blade; 10. Connecting rod; 11. Mounting plate. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0022] Example

[0023] Reference Figure 1-4 As shown, this embodiment provides a novel forage harvester with a protective blade, including an upper pressure plate 1 and a bottom support plate 2, with a gap between the upper pressure plate 1 and the bottom support plate 2 for the horizontal passage of the blade 3. One end of the upper pressure plate 1 has a mounting hole 4 on its top surface, and the other end of the upper pressure plate 1 has at least one forward extension; in this embodiment, one upper pressure plate 1 has two forward extensions. The end of the forward extension away from the mounting hole 4 is a pointed tip 5, which is used to move the crop to be harvested to both sides of the forward extension to prevent bending of the crop. Both sides of the forward extension, near the mounting hole 4, have horizontally arranged first serrated strips 6, which act as a barrier and limiter for the crop, preventing harvesting failure due to the crop retreating during the forward harvesting process of the blade 3. One end of the bottom support plate 2 has a fixing hole 7, and the other end of the bottom support plate 2 has a support member corresponding to each forward extension. The support member supports the blade 3, increasing the stability of the blade 3 during its back-and-forth movement along its length. The distance between the support and the fixing hole 7 is less than the distance between the extension and the mounting hole 4. The support is located behind the tip 5 to avoid crushing the crops.

[0024] In use, multiple upper pressure plates 1 are evenly fixed to the top surface of the mounting plate 11 using mounting holes 4 and bolts, and multiple bottom support plates 2 are evenly fixed to the bottom surface of the mounting plate 11 using fixing holes 7 and bolts. The blade 3 is placed horizontally on the bottom support plate 2 and located in the gap between the upper pressure plates 1 and the bottom support plate 2. The distance between the bottom support plate 2 and the lower pressure plate should be maintained at 0.4 mm as much as possible to prevent sand and gravel from entering between the bottom support plate 2 and the lower pressure plate and thus hitting the blade 3. When the mounting plate 11 moves forward under the drive of a harvester or other equipment, the blade 3, upper pressure plates 1 and bottom support plates 2 move synchronously. At the same time, the blade 3 is driven by the drive device to move back and forth along its length to harvest crops. During the harvesting process, the upper pressure plates 1 and the bottom support plates 2 protect the blade 3, preventing it from being worn and deformed due to collisions with sand and gravel, thus improving the service life of the blade 3 and ensuring the harvesting effect and efficiency. During the harvesting process, the upper pressure plate 1 and the bottom support plate 2 can be quickly disassembled and reassembled after wear or deformation, reducing maintenance costs and time.

[0025] In a further preferred embodiment, a bottom blade 8 is fixedly connected to one side of the front extension near the bottom support plate 2. A second serrated bar 9 is horizontally arranged on both sides of the bottom blade 8. The central axis of the bottom blade 8 and the front extension overlaps, and the width of the bottom blade 8 in the length direction of the blade bar 3 is smaller than the width of the front extension in the length direction of the blade bar 3.

[0026] In use, the connection between the front extension and the bottom blade can be welded. The bottom blade 8 can further reduce the probability and area of ​​contact between the blade 3 and the lower pressure plate, thereby reducing the frictional resistance of the blade 3 and the probability of the blade 3 getting stuck. The second serrated blade 9 can work in conjunction with the first serrated blade 6 to block the crops and prevent harvesting failure due to the crops retreating during the forward harvesting process of the blade 3.

[0027] In a further optimized design, all bottom blades 8 on the same upper pressure plate 1 are fixedly connected by connecting rods 10.

[0028] In use, the connecting rod 10 is used to increase the connection strength between the bottom blades 8, thereby increasing the overall strength of the lower pressure plate.

[0029] In a further optimized design, the upper pressure plate 1 has a protrusion located between the mounting hole 4 and the forward extension. The distance between the protrusion and the blade 3 gradually increases and then gradually decreases from the end closer to the mounting hole 4 to the end farther away from the mounting hole 4.

[0030] In use, the protrusion provides clearance for the blade 3, reducing the contact area between the blade 3 and the upper pressure plate 1, thereby ensuring that the blade 3 can be smoothly pulled. At the same time, the protrusion facilitates the removal and placement of the upper pressure plate 1, thus facilitating its assembly and disassembly.

[0031] In a further preferred embodiment, the root of the support member is provided with a recessed portion, and the distance between the recessed portion and the blade 3 gradually increases and then gradually decreases from the end closer to the fixing hole 7 to the end farther away from the fixing hole 7. The end of the support member is provided with a horizontal support block that contacts and connects with the blade 3.

[0032] In use, the horizontal support block is used to support and limit the blade 3, and the recessed part can provide clearance for the blade 3, reduce the contact area between the blade 3 and the bottom support plate 2, thereby ensuring that the blade 3 can be pulled out smoothly. At the same time, the recessed part makes it easy to put on and take off the bottom support plate 2, thus making it easy to disassemble and assemble the bottom support plate 2.

[0033] Therefore, the present invention provides a novel forage harvester blade protector with the above-mentioned structure. It has a simple structure and low manufacturing cost, can provide all-round protection for the cutter blade, and can reduce the resistance when the cutter blade is pulled out, resulting in good cutting effect and thus improving cutting efficiency.

[0034] In the description of this utility model, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model 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 this utility model.

[0035] The embodiments described above are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.

Claims

1. A novel forage harvester with a protective blade, characterized in that: The device includes an upper pressure plate (1) and a bottom support plate (2). A gap is provided between the upper pressure plate (1) and the bottom support plate (2) for the horizontal passage of the blade (3). The top surface of one end of the upper pressure plate (1) is provided with a mounting hole (4). The other end of the upper pressure plate (1) is provided with at least one forward extension. The end of the forward extension away from the mounting hole (4) is a pointed tip (5). Both sides of the forward extension are provided with horizontally arranged first serrated strips (6) at the end near the mounting hole (4). One end of the bottom support plate (2) is provided with a fixing hole (7). The other end of the bottom support plate (2) is provided with a support member that corresponds to the forward extension. The distance between the support member and the fixing hole (7) is less than the distance between the forward extension and the mounting hole (4).

2. The novel forage harvester blade protector according to claim 1, characterized in that: A bottom blade (8) is fixedly connected to one side of the front extension near the bottom support plate (2). The bottom blade (8) has horizontally arranged second serrated strips (9) on both sides. The central axis of the bottom blade (8) overlaps with that of the front extension, and the width of the bottom blade (8) in the length direction of the blade strip (3) is smaller than the width of the front extension in the length direction of the blade strip (3).

3. The novel forage harvester blade protector according to claim 2, characterized in that: A connecting rod (10) is fixedly connected between all the bottom blades (8) on the same upper pressure plate (1).

4. The novel forage harvester blade protector according to claim 1, characterized in that: The upper pressure plate (1) is provided with a protrusion located between the mounting hole (4) and the extension member. The distance between the protrusion and the blade (3) gradually increases and then gradually decreases from the end closer to the mounting hole (4) to the end farther away from the mounting hole (4).

5. The novel forage harvester blade protector according to claim 1, characterized in that: The support member has a recessed portion at its root. The distance between the recessed portion and the blade (3) gradually increases and then gradually decreases from the end near the fixing hole (7) to the end away from the fixing hole (7). The end of the support member has a horizontal support block that contacts and connects with the blade (3).

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