Cutting knife blade for reciprocating double-acting cutting knife

Abstract

The utility model discloses a cutter blade for a reciprocating double-acting cutter, which belongs to the technical field of water area cleaning cutter design and is characterized in that cutter teeth or cutting edges are symmetrically arranged on two sides of the cutter blade, a sinking cavity is arranged on one side of the middle of the cutter blade and forms a boss on the other side of the middle of the cutter blade, and a center hole for riveting a guide column is arranged at the bottom of the sinking cavity. A plurality of connecting holes used for installing rivets are symmetrically formed in the bottom of the blade, and chamfers are arranged at the inner ends of the connecting holes. Compared with an existing structure, the sinking cavities formed in the blades and the sinking tables of the connecting holes can hide protruding heads after riveting, secondary grinding and repairing are not needed, procedures are saved, the riveting effect is not damaged, in addition, the contact area between the upper and lower adjacent blades can be reduced through the sinking cavities, and the service life of the blades is prolonged. The technical effects of reducing the friction force between the blades and reducing the driving energy consumption of the cutting knife are achieved.

Description

Technical Field

[0001] This utility model belongs to the field of amphibious operation tool design technology, and in particular relates to a cutting blade for a reciprocating double-action cutting tool. Background Technology

[0002] In recent years, with the rapid development of my country's economy, the demand for ecological environmental protection and water management has become increasingly urgent. In complex aquatic operation scenarios such as coastal mudflat management, reclamation projects, saline-alkali land restoration, and river dredging, traditional land-based engineering machinery has significant limitations due to its inability to adapt to shallow water, silt, or swampy environments. Therefore, amphibious vehicles have become a key technological equipment for solving these problems. By integrating a special chassis and operating devices, they achieve seamless switching between land and water environments. Among these components, the plant cutter, as the core functional component of the amphibious vehicle, directly determines the efficiency and stability of underwater vegetation cutting.

[0003] Currently, traditional cutter structures such as Figure 1 , Figure 2 , Figure 3 As shown, the cutter and blade are connected by rivets. After riveting, the protrusion will be higher than the blade's height H, requiring secondary grinding and reshaping, which is not only complex but also damages the riveting effect. Furthermore, the central part of the traditional cutter structure is entirely flat, with adjacent cutters in full-surface contact. This uniform contact surface becomes a friction surface, leading to rapid blade wear and reduced lifespan over long-term use. Finally, the traditional cutter structure lacks guide pillars and guide arms, relying on upper and lower pressure blocks to ensure a tight fit between the blades, further exacerbating wear. Utility Model Content

[0004] To address the aforementioned technical problems, this utility model provides a cutting blade for a reciprocating double-action cutting tool, which solves the problems through the following technical means:

[0005] A reciprocating double-action cutter blade is characterized in that the blade has symmetrically arranged cutting teeth or cutting edges on both sides, a recessed cavity is provided on one side of the middle of the blade, a boss is formed on the other side of the middle of the blade, a central hole is provided at the bottom of the recessed cavity, and multiple connecting holes are symmetrically arranged at the bottom of the blade, with a recessed platform at the inner end of the connecting holes.

[0006] Preferably, the inner end of the central hole is provided with a central chamfer.

[0007] Preferably, the inner end of the settling platform is provided with an inner chamfer.

[0008] Preferably, the shape of the sunken cavity is triangular, rectangular, trapezoidal or circular, and the depth of the sunken cavity ranges from 1.3 to 1.7 mm.

[0009] Preferably, the main body of the blade is an isosceles triangle structure, with a flat top at the apex and chamfers at the two base corners.

[0010] Preferably, a process hole is provided at the bottom of the blade, located between the connecting holes.

[0011] Preferably, it also includes a blade for mounting the blade, wherein a plurality of mounting holes are symmetrically provided on the connecting plane of the blade, and the mounting holes and the connecting holes are riveted together by rivets.

[0012] Preferably, the blade is provided with a vertical connecting lug, which is used to connect to the drive arm.

[0013] Preferably, it also includes a guide post, the bottom of which is riveted into the center hole.

[0014] Preferably, the top of the guide post is mounted on the outer end of the guide arm via a pivot, and the inner end of the guide arm is oscillatingly mounted in a swing seat.

[0015] The cutting blade for a reciprocating double-action cutting tool of this utility model has the following beneficial effects:

[0016] The recessed cavity and countersunk hole of this blade design conceal the protrusion after riveting, eliminating the need for re-grinding and reshaping, saving steps and preserving the riveting effect. The center chamfer and inner chamfer increase the contact area and enhance the connection strength. Furthermore, the recessed cavity reduces the contact area between adjacent blades, thereby reducing friction between blades and lowering the energy consumption of the cutting tool drive. Attached Figure Description

[0017] To more clearly illustrate the technical solution of this utility model, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of an existing cutting blade;

[0019] Figure 2 yes Figure 1 A sectional view of section AA;

[0020] Figure 3 This is a schematic diagram of the riveting protrusion on an existing cutting tool;

[0021] Figure 4 This is a front view of the blade tooth structure of this utility model;

[0022] Figure 5 This is a schematic diagram of the back structure of the blade tooth structure of this utility model;

[0023] Figure 6 This is a schematic diagram of the front structure of the blade of this utility model;

[0024] Figure 7 This is a schematic diagram of the back structure of the blade structure of this utility model;

[0025] Figure 8 This is an installation diagram of this utility model;

[0026] Figure 9 yes Figure 8 A sectional view of section AA;

[0027] Figure 10 yes Figure 8 A sectional view of section BB;

[0028] Figure 11 This is a schematic diagram illustrating the application of this utility model.

[0029] Among them, 1-cutting tooth, 2-cutting edge, 3-sunken cavity, 4-bore, 5-center hole, 501-center chamfer, 6-connecting hole, 601-sunken platform, 602-inner chamfer, 7-process hole, 8-cutting bar, 801-mounting hole, 802-connecting ear, 9-guide post, 901-guide arm, 902-swing seat, 10-rivet. Detailed Implementation

[0030] In the description of this utility model, it should be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this utility model 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, and therefore should not be construed as a limitation of this utility model. The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0031] The present invention will now be described in detail with reference to the accompanying drawings.

[0032] like Figures 4 to 10As shown, the blade of the reciprocating double-acting cutter has symmetrically arranged cutting teeth 1 or cutting edges 2 on both sides of the blade, a recessed cavity 3 is provided on one side of the middle of the blade, and a boss 4 is formed on the other side of the middle of the blade. A central hole 5 is provided at the bottom of the recessed cavity 3, and multiple connecting holes 6 are symmetrically arranged at the bottom of the blade. A recessed platform 601 is provided at the inner end of the connecting hole 6.

[0033] Specifically, the inner end of the central hole 5 is provided with a central chamfer 501, and the inner end of the recessed platform 601 is provided with an inner chamfer 602.

[0034] In actual operation, the recessed cavity and countersunk platform of the cutting tool can conceal the protrusion after riveting, eliminating the need for re-grinding and reshaping, saving steps and not damaging the riveting effect. The center chamfer and inner chamfer increase the contact area and improve the connection strength.

[0035] It should be noted that inserts of 3mm and below can be directly obtained by increasing the stamping pressure. For inserts larger than 3mm, stamping will cause uncontrollable deformation of the insert edge. After punching the center hole boss, a 0.5mm countersunk edge can be machined.

[0036] In practical applications, the shape of the recessed cavity 3 is triangular, rectangular, trapezoidal, or circular, and the depth of the recessed cavity 3 ranges from 1.3 to 1.7 mm. The main body of the blade is an isosceles triangular structure, with a flat end at the apex and chamfers at the two base corners.

[0037] It should be noted that a process hole 7 is provided at the bottom of the blade and between the connecting holes 6. The process hole 7 is used for positioning the blade during installation or for the punch to pass through during disassembly.

[0038] The figure also includes a blade bar 8 for mounting the blade. Multiple mounting holes 801 are symmetrically formed on the connecting plane of the blade bar 8, and the mounting holes 801 are riveted to the connecting holes 6 by rivets 10. In addition, a connecting lug 802 is vertically provided on the blade bar 8 for connecting the drive arm.

[0039] The figure also includes a guide post 9, the bottom of which is riveted into the center hole 5, and the top of which is mounted on the outer end of the guide arm 901 via a pivot. The inner end of the guide arm 901 is swayably mounted in the swing seat 902.

[0040] In actual operation, the two stacked blades are close together, and move symmetrically under the drive arm and connecting lug, effectively offsetting impact and improving the stability of the equipment during operation. The blades on both sides of the upper blade have a cutting edge structure, while the blades on both sides of the lower blade have a tooth structure. Guide arms for guiding the movement of the upper blade and guide arms for guiding the movement of the lower blade are alternately arranged in the swing seat. The blades perform cutting motion under the guidance of the central guide post. In the figure, the countersunk cavity between adjacent blades effectively reduces the contact area and friction.

[0041] It should be noted that the recessed cavity and the countersunk platen of the connecting hole in this blade can hide the protrusion after riveting, eliminating the need for re-grinding and reshaping, saving processes and not damaging the riveting effect. In addition, the recessed cavity can reduce the contact area between adjacent blades, thereby reducing the friction between the blades and lowering the energy consumption of the cutting tool drive.

[0042] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A cutting blade for a reciprocating double-action cutting tool, characterized in that, The blade has symmetrical teeth (1) or blades (2) on both sides. A recessed cavity (3) is provided on one side of the middle of the blade. A boss (4) is formed on the other side of the middle of the blade in the recessed cavity (3). A central hole (5) is provided at the bottom of the recessed cavity (3). Multiple connecting holes (6) are symmetrically provided at the bottom of the blade. A recessed platform (601) is provided at the inner end of the connecting hole (6).

2. The cutting blade for a reciprocating double-action cutting tool according to claim 1, characterized in that, The inner end of the central hole (5) is provided with a central chamfer (501).

3. The cutting blade for a reciprocating double-action cutting tool according to claim 1, characterized in that, The inner end of the sinking platform (601) is provided with an inner chamfer (602).

4. The cutting blade for a reciprocating double-action cutting tool according to claim 1, characterized in that, The shape of the sinking cavity (3) is triangular, rectangular, trapezoidal or circular, and the depth of the sinking cavity (3) ranges from 1.3 to 1.7 mm.

5. The cutting blade for a reciprocating double-action cutting tool according to claim 1, characterized in that, The blade body is an isosceles triangle structure, with a flat tip at the apex and chamfers at the two base corners.

6. The cutting blade for a reciprocating double-action cutting tool according to claim 1, characterized in that, A process hole (7) is provided at the bottom of the blade and at the position between the connecting holes (6).

7. The cutting blade for a reciprocating double-action cutting tool according to claim 1, characterized in that, It also includes a blade strip (8) for mounting the blade, wherein a plurality of mounting holes (801) are symmetrically provided on the connecting plane of the blade strip (8), and the mounting holes (801) and the connecting holes (6) are riveted together by rivets (10).

8. The cutting blade for a reciprocating double-action cutting tool according to claim 7, characterized in that, A connecting ear (802) is vertically provided on the blade (8), and the connecting ear (802) is used to connect the drive arm.

9. The cutting blade for a reciprocating double-action cutting tool according to claim 1, characterized in that, It also includes a guide post (9), the bottom of which is riveted into the center hole (5).

10. The cutting blade for a reciprocating double-action cutting tool according to claim 9, characterized in that, The top of the guide post (9) is mounted on the outer end of the guide arm (901) via a pivot, and the inner end of the guide arm (901) is swayably mounted in the swing seat (902).

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