High-speed steel edging guide plate

Abstract

The utility model relates to the technical field of chain saws, and discloses a high-speed steel edging guide plate which comprises a core plate, side plates are fixedly connected to the top face and the bottom face of the core plate respectively, high-speed steel edging plates are fixedly connected to the top face and the bottom face of the core plate respectively, and the side plates and the core plate are fixed in a welded mode. The high-speed steel edging guide plate has obvious advantages, the high-speed steel edging plate riveted to the front end of the high-speed steel edging guide plate utilizes the red and hard characteristic, the abrasion resistance of the guide rail face at the front end is enhanced, friction is effectively resisted when the high-speed steel edging guide plate is inserted into soil for operation, the service life of the guide rail face is prolonged, and the service life of the high-speed steel edging guide plate is prolonged. The service life is greatly prolonged, the reliability in a complex environment is improved, the two ends of the rivet of a special structure are riveted into a 90-degree inverted cone and are 0.2-0.4 mm higher than the side plates, the riveting strength is improved, and it is guaranteed that the high-speed steel edged plates, the core plate and the side plates are stably connected.

Description

Technical Field

[0001] This utility model relates to the field of chainsaw technology, specifically a high-speed steel edge guide plate. Background Technology

[0002] A chainsaw mainly consists of a prime mover, guide plate, saw chain, and sprocket. The rear end of the guide plate is fastened to the housing of the prime mover. The saw chain rotates at high speed around the guide plate and sprocket to cut trees. Traditionally, guide plates are made of structural steel, and the guide rails on both sides are hardened by high-frequency quenching. To reduce the frictional resistance when the saw chain passes around the front end of the guide plate, the front end of the guide plate is equipped with a driven sprocket and a needle roller bearing. In actual use, sometimes it is necessary to insert the guide plate into the soil to cut tree roots and other objects. At this time, the soil will inevitably enter the needle roller bearing at the front end of the guide plate, causing the needle roller bearing to wear out quickly. Some guide plates do not have a driven sprocket and needle roller bearing at the front end. When the saw chain passes around the front end of the guide plate, the frictional resistance is large, the heat generation is severe, and the temperature of the guide rail surface of the guide plate becomes too high, the material softens, and the front end of the guide plate wears out quickly. For this reason, we propose a high-speed steel edged guide plate. Summary of the Invention

[0003] (a) Technical problems to be solved

[0004] To address the shortcomings of existing technologies, this utility model provides a high-speed steel edge guide plate, which solves the aforementioned problems.

[0005] (II) Technical Solution

[0006] To achieve the above-mentioned objectives, this utility model provides the following technical solution:

[0007] A high-speed steel edging guide plate includes a core plate, side plates fixedly connected to the top and bottom surfaces of the core plate, high-speed steel edging plates fixedly connected to the top and bottom surfaces of the core plate, the side plates being welded to the core plate, the top surface of the side plates having equally spaced welding recesses, and rivets fixedly connecting the core plate and the high-speed steel edging plates.

[0008] Preferably, the two ends of the rivet are riveted into inverted cones with a cone apex angle of 90°, and the two ends of the rivet are higher than the side surface by a certain height, ranging from 0.2mm to 0.4mm.

[0009] Preferably, the top surface of the high-speed steel edging plate has equidistantly distributed high-speed steel edging plate rivet holes, the bottom inner side of the high-speed steel edging plate rivet holes is a cylindrical hole, the top inner side of the high-speed steel edging plate rivet holes is a conical hole, and rivets are fixedly connected to the inner side of the high-speed steel edging plate rivet holes.

[0010] Preferably, the top surface of the side plate has equidistantly distributed pin holes on one side, a guide groove on one side, and a front positioning hole on the other side; the top surface of the core plate has equidistantly distributed pin holes on one side, a guide groove on one side, and a front positioning hole on the other side.

[0011] Preferably, the top surface of the side plate has equidistant elongated oil guide holes.

[0012] Preferably, the top and bottom surfaces of the core board are fixedly connected with an electric welding surface, and a core board rivet hole is opened on one side of the top surface of the core board. The core board rivet hole is concentrically aligned with the rivet hole of the high-speed steel edging plate, and a rivet is fixedly connected to the inner side of the core board rivet hole.

[0013] (III) Beneficial Effects

[0014] Compared with the prior art, the advantages of this utility model are:

[0015] A high-speed steel edged guide plate is provided, which has the following beneficial effects:

[0016] 1. Enhanced wear resistance and extended service life: A high-speed steel edging plate is riveted to the front end of the guide plate. High-speed steel has red hardness, which can significantly increase the wear resistance of the guide rail surface at the front end of the guide plate. When the guide plate is inserted into the soil to saw tree roots or other objects, the high-speed steel edging plate can effectively resist the friction of soil and other foreign objects, avoiding rapid wear at the front end of the guide plate due to excessive frictional resistance. Compared with traditional guide plates, the service life of the guide plate is greatly extended, and the reliability of the guide plate in complex working environments is improved.

[0017] 2. Improved riveting strength and ensured structural stability: The core plate and the high-speed steel edging plate are connected by rivets with a special structure. The two ends of the rivets are riveted into inverted cones with a 90° apex angle. This structural design greatly improves the riveting strength and makes the rivets less likely to come loose. At the same time, the two ends of the rivets protrude 0.2-0.4mm above the side plate, which further enhances the riveting firmness without affecting the feed movement of the guide plate. This ensures a stable connection between the high-speed steel edging plate, the core plate, and the side plate, and guarantees the stability of the overall structure of the guide plate during operation.

[0018] 3. Optimized design and improved performance: The pin holes, guide grooves and front positioning holes on the side plates and core plates facilitate the installation and positioning of the guide plate with other parts of the chainsaw, ensuring the installation accuracy of the guide plate on the chainsaw, allowing the saw chain to move more smoothly around the guide plate and improving cutting efficiency. The elongated oil guide holes on the side plates can lubricate the contact parts between the saw chain and the guide plate, reducing friction and wear, and further improving the performance of the guide plate. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0020] Figure 2 This is a schematic diagram showing the overall structure of this utility model disassembled.

[0021] Figure 3 This is a cross-sectional view of the overall structure of this utility model.

[0022] Figure 4 for Figure 3 A magnified view of part A in the diagram.

[0023] In the diagram: 1. Side plate; 2. Core plate; 3. High-speed steel edging plate; 4. Rivet; 5. Front positioning hole; 6. Guide groove; 7. Pin hole; 8. Elongated oil guide hole; 9. Welding pit; 10. Welding surface; 11. Rivet hole in core plate; 12. Rivet hole in high-speed steel edging plate; 13. Cylindrical hole; 14. Conical hole. Detailed Implementation

[0024] 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.

[0025] Please see Figure 1-4 This utility model provides a technical solution:

[0026] A high-speed steel edge guide plate includes a core plate 2, side plates 1 are fixedly connected to the top and bottom surfaces of the core plate 2, and high-speed steel edge plates 3 are fixedly connected to the top and bottom surfaces of the core plate 2. The side plates 1 and the core plate 2 are welded together. The top surface of the side plates 1 is provided with equally spaced welding pits 9. The core plate 2 and the high-speed steel edge plates 3 are fixedly connected by rivets 4.

[0027] Furthermore, the two ends of the rivet 4 are riveted into inverted cones with a cone apex angle of 90°. This structure makes the riveting strength high and it is not easy to come loose. The two ends of the rivet 4 are raised above the side by a certain height, ranging from 0.2mm to 0.4mm, to improve the riveting strength without affecting the feed movement of the guide plate.

[0028] Furthermore, the top surface of the high-speed steel edging plate 3 is provided with equidistantly distributed high-speed steel edging plate rivet holes 12. The bottom inner side of the high-speed steel edging plate rivet holes 12 is a cylindrical hole 13, and the top inner side of the high-speed steel edging plate rivet holes 12 is a conical hole 14. Rivets 4 are fixedly connected to the inner side of the high-speed steel edging plate rivet holes 12. Through the action of the high-speed steel edging plate 3, the wear resistance of the guide rail surface at the front end of the guide plate is increased, thereby improving the reliability of the guide plate when inserted into the soil and extending the service life of the guide plate.

[0029] Furthermore, the top surface of the side plate 1 has equidistantly distributed pin holes 7, a guide groove 6, and a front positioning hole 5 on the other side of the top surface of the side plate 1. The top surface of the core plate 2 has equidistantly distributed pin holes 7, a guide groove 6, and a front positioning hole 5 on the other side of the top surface of the core plate 2.

[0030] Furthermore, one side of the top surface of the side plate 1 is provided with equidistant elongated oil guide holes 8.

[0031] Furthermore, the top and bottom surfaces of the core board 2 are fixedly connected with an electric welding surface 10, and a core board rivet hole 11 is opened on one side of the top surface of the core board 2. The core board rivet hole 11 and the high-speed steel edging plate rivet hole 12 are concentrically aligned, and a rivet 4 is fixedly connected to the inner side of the core board rivet hole 11.

[0032] Structural Description:

[0033] Core plate 2: As the core support structure of the guide plate, its top and bottom surfaces are connected to the side plate 1 and the high-speed steel edging plate 3, respectively. The core plate 2 is provided with an electric welding surface 10 for welding and fixing to the side plate 1 to ensure the stability of the overall structure. At the same time, the core plate 2 is also provided with core plate rivet holes 11, which are concentrically aligned with the high-speed steel edging plate rivet holes 12 on the high-speed steel edging plate 3. The high-speed steel edging plate 3 is firmly fixed to the core plate 2 by rivets 4, providing a stable installation foundation for the high-speed steel edging plate 3.

[0034] Side plate 1: It is fixed to the top and bottom surfaces of the core plate 2 respectively and welded to the core plate 2 to form a whole. The equidistant welding pits 9 opened on the top surface of the side plate 1 help to increase the welding area and improve the welding strength during the welding process, making the connection between the side plate 1 and the core plate 2 more secure. The pin hole 7, guide groove 6 on one side of the top surface of the side plate 1 and the front positioning hole 5 on the other side play a role in precise positioning and guidance when the guide plate is installed on the chainsaw, ensuring the accuracy and stability of the guide plate installation. In addition, the elongated oil guide hole 8 on one side of the top surface of the side plate 1 allows lubricating oil to flow to the contact part between the saw chain and the guide plate, realizing the lubrication function and reducing friction and wear.

[0035] High-speed steel edging plate 3: Installed on the top and bottom surfaces of the core plate 2, its front end directly contacts the saw chain and guides the saw chain movement. The top surface of the high-speed steel edging plate 3 has equidistantly distributed high-speed steel edging plate rivet holes 12, including cylindrical holes 13 at the bottom inner side and conical holes 14 at the top inner side, which cooperate with rivets 4 to achieve a tight connection with the core plate 2. The high-speed steel edging plate 3 utilizes the red hardness of high-speed steel, which can effectively resist friction when the guide plate is working, especially when inserting into the soil to cut tree roots, significantly increasing the wear resistance of the guide rail surface at the front end of the guide plate and extending the service life of the guide plate.

[0036] Rivet 4: It is a key component connecting the core plate 2 and the high-speed steel edging plate 3. Its two ends are riveted into inverted cones with a cone apex angle of 90°. This special shape design greatly improves the riveting strength, ensuring that the high-speed steel edging plate 3 and the core plate 2 are tightly connected and not easy to separate. The two ends of the rivet 4 are 0.2-0.4mm higher than the side plate 1. While not affecting the feed movement of the guide plate, it further enhances the firmness of the riveting and ensures the stability of the overall structure of the guide plate during operation.

[0037] Working Principle: When this utility model is used, the pin holes 7, guide grooves 6, and front positioning holes 5 on the side plate 1 and core plate 2 play a crucial role in installing the guide plate onto the chainsaw. The pin holes 7 cooperate with the corresponding positioning pins on the chainsaw, the guide grooves 6 provide guidance during installation to ensure accurate installation direction, and the front positioning holes 5 further refine the positioning, allowing the guide plate to be precisely installed on the chainsaw. This ensures the accuracy of the saw chain's movement around the guide plate, thereby improving the precision and stability of the cutting operation. Under the drive of the chainsaw, the saw chain rotates at high speed around the guide plate to perform sawing work. At this time, the high-speed steel edging plate 3 plays an important role due to its red hardness. High-speed steel can still maintain high hardness at high temperatures. When the front end of the guide plate contacts the object being sawed, such as inserting into soil to saw tree roots, the high-speed steel edging plate 3 can effectively resist the friction of foreign objects such as soil, reduce the wear of the guide rail surface at the front end of the guide plate, and avoid the guide plate material softening and losing its stability due to excessive frictional resistance. To ensure stable operation of the guide plate under complex working conditions and extend its service life, the core plate 2 and the high-speed steel edging plate 3 are connected by rivets 4. The two ends of the rivets 4 are riveted into inverted cones with a 90° apex angle, and both ends protrude 0.2-0.4mm above the side plate. This special structure greatly improves the riveting strength and makes the rivets less likely to come loose, ensuring a stable connection between the high-speed steel edging plate 3, the core plate 2, and the side plate 1. Under the vibration and impact force generated by the high-speed operation of the saw chain, the overall structure of the guide plate can remain stable and will not affect the cutting effect and the life of the guide plate due to loose parts. The elongated oil guide hole 8 on the top surface of the side plate 1 plays a lubricating role when the guide plate is working. The lubricating oil flows through the elongated oil guide hole 8 to the contact part of the saw chain and the guide plate, forming an oil film, reducing the friction coefficient between the two, reducing friction and wear, and allowing the saw chain to move more smoothly on the guide plate. This not only improves the cutting efficiency but also further extends the service life of the guide plate and the saw chain.

[0038] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-speed steel edge guide plate, comprising a core plate (2), characterized in that: The top and bottom surfaces of the core plate (2) are respectively fixedly connected to side plates (1), and the top and bottom surfaces of the core plate (2) are respectively fixedly connected to high-speed steel edging plates (3). The side plates (1) and the core plate (2) are welded together. The top surface of the side plates (1) is provided with equally spaced electric welding pits (9). The core plate (2) and the high-speed steel edging plates (3) are fixedly connected to each other with rivets (4).

2. The high-speed steel edge guide plate according to claim 1, characterized in that: The two ends of the rivet (4) are riveted into inverted cones with a cone apex angle of 90°. The two ends of the rivet (4) are higher than the side surface by a certain height, with a height range of 0.2mm to 0.4mm.

3. A high-speed steel edged guide plate according to claim 2, characterized in that: The high-speed steel edging plate (3) has equidistantly distributed high-speed steel edging plate rivet holes (12) on its top surface. The bottom inner side of the high-speed steel edging plate rivet holes (12) is a cylindrical hole (13), and the top inner side of the high-speed steel edging plate rivet holes (12) is a conical hole (14). Rivets (4) are fixedly connected to the inner side of the high-speed steel edging plate rivet holes (12).

4. A high-speed steel edged guide plate according to claim 1, characterized in that: The side plate (1) has equidistantly distributed pin holes (7) on one side of its top surface, a guide groove (6) on one side of its top surface, and a front positioning hole (5) on the other side of its top surface. The core plate (2) has equidistantly distributed pin holes (7) on one side of its top surface, a guide groove (6) on one side of its top surface, and a front positioning hole (5) on the other side of its top surface.

5. A high-speed steel edged guide plate according to claim 4, characterized in that: The side plate (1) has equidistantly distributed elongated oil guide holes (8) on one side of its top surface.

6. A high-speed steel edged guide plate according to claim 2, characterized in that: The top and bottom surfaces of the core plate (2) are fixedly connected to an electric welding surface (10). A core plate rivet hole (11) is opened on one side of the top surface of the core plate (2). The core plate rivet hole (11) and the high-speed steel edging plate rivet hole (12) are concentrically aligned. A rivet (4) is fixedly connected to the inner side of the core plate rivet hole (11).

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