Sawtooth shovel with arc-shaped shovel edge
By designing a serrated shovel with a concave arc-shaped shovel edge and a lever hole, the problem of stress dispersion at the end of the serrated shovel is solved, and efficient excavation of hard soil and adjustment of nuts and bolts are achieved, thereby extending the service life.
Patent Information
- Application Number
- CN202422319862.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-24
- Publication Date
- 2025-09-19
- Estimated Expiration
- 2034-09-24
Smart Images
Figure CN223349034U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of serrated shovels, and in particular to a serrated shovel with an arc-shaped shovel edge. Background Art
[0002] A serrated shovel is a metal shovel with serrations on one or both sides of the shovel head. It is mainly made of iron and is a commonly used agricultural tool in agriculture and forestry.
[0003] In the prior art, the shovel head end of a serrated shovel is usually an arc-shaped structure protruding outward, and a cutting edge is formed at its edge. However, during use, the arc-shaped end protruding outward has a larger contact surface, which makes the stress more dispersed. As a result, the serrated shovel is subjected to greater excavation resistance when facing hard soil, which is not conducive to soil excavation. Utility Model Content
[0004] The problem to be solved by the present application is that during use, the existing serrated shovel has an end portion protruding outward in an arc-shaped structure, resulting in a large contact surface at the end portion, which makes the digging stress at the end portion relatively dispersed, and the digging resistance at the end portion is relatively large when facing hard soil.
[0005] In order to solve the above technical problems, the present application provides a serrated shovel with an arc-shaped shovel edge, including an integrally formed shovel head and a shovel shank. Saw teeth with cutting function are symmetrically formed on both sides of the shovel head. The edges of the saw teeth have a 45° chamfer. The end of the shovel head is formed with an inwardly concave and arc-shaped shovel edge. The curvature of the shovel edge is 0.75 rad, and the ratio between its radius and the far end of the shovel head is 1.3 to 1.5:1. The shovel head is symmetrically arranged with wrench holes of different sizes on both sides near the shovel shank for performing rotation adjustment operations on bolts and nuts.
[0006] Since the serrated shovel of the present application is designed with an inwardly concave and arc-shaped shovel edge and a lever hole, the inwardly concave and arc-shaped shovel edge can concentrate the stress, thereby facilitating the excavation operation on hard soil, and the lever hole can also enable the serrated shovel to have the rotation adjustment operation of the bolts and nuts, thereby solving the problem of the serrated shovel of the prior art in which, during use, the end portion of the serrated shovel has a large contact surface due to the end portion protruding outward in a circular arc structure, thereby making the excavation stress on the end portion more dispersed, and the excavation resistance when facing hard soil is greater. BRIEF DESCRIPTION OF THE DRAWINGS
[0007] Figure 1 Schematic diagram of the three-dimensional structure of the embodiment.
[0008] Figure 2 It is a front view structural schematic diagram of an embodiment.
[0009] Figure 3 It is a side structural schematic diagram of an embodiment.
[0010] Figure 4 Schematic diagram of the top structure of the embodiment.
[0011] Figure 5 It is a schematic diagram of the back structure of the embodiment.
[0012] In the picture: 1. Spade pants; 2. Shoulder step; 3. Serration; 4. Chamfer; 5. Hole; 6. Spade head; 7. Spade edge. DETAILED DESCRIPTION
[0013] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application. Example
[0014] The present application relates to a serrated shovel with an arc-shaped shovel edge, such as Figure 1-5 As shown, the sawtooth shovel includes an integrally formed shovel head 6 and a shovel shank 1. The upper part of the shovel head 6 is symmetrically provided with bent shoulder 2 for the user to step on and apply force on both sides of the shovel shank 1. The shovel head 6 is symmetrically provided with saw teeth 3 with cutting function on both sides. In order to reduce the wear rate of the sawtooth shovel, an inwardly concave and arc-shaped shovel edge 7 is formed at the end of the shovel head 6. The curvature of the shovel edge 7 is 0.75 rad, and the ratio between its radius and the distal end of the shovel head 6 is 1.3 to 1.5:1. The surface of the shovel edge 7 is formed with a The cutting edge, and in order to reduce the resistance of the shovel head 6 during digging, the surface of the shovel head 63 is concave, and the angle of the concave is 120~145°. The width dimension from the proximal end to the distal end of the shovel head 65 changes evenly, gradually changing from wide to narrow, and the width dimension ratio between the proximal end and the distal end is 1.6~1.8:1, and the length dimension ratio between the shovel head 65 and the shovel pants 11 is 1~1.5:1. On both sides of the shovel head 6 near the shovel pants 1, there are symmetrically arranged wrench holes 5 of different sizes for performing bolt and nut rotation adjustment operations.
[0015] In order to be able to firmly hold the spade pants 1 when using the serrated spade, outward-protruding anti-slip contact points are evenly arranged on the surface of the spade pants 1, and outward-protruding anti-slip grooves can also be added to the surface of the shoulder 2, so that when the user steps on it, the friction between the foot and the shoulder 2 can be increased, reducing the chance of slipping.
[0016] In order to increase the toughness strength of the saw teeth 3, the angle between the saw teeth 3 is a negative angle, and an arc is formed at the root of the saw teeth 3 to improve the connection strength and transition. The edge of the saw teeth 3 also has a 45° chamfer 4 to improve the sharpness of the saw teeth 3.
[0017] The material of the serrated shovel can be selected from a single metal material such as iron, steel, or a composite metal material such as manganese steel, stainless steel, etc., according to the impact resistance and wear strength requirements of the usage scenario.
[0018] When in use, the serrated shovel is connected to the shovel handle, and a through hole is formed on the surface of the shovel pants 1 for passing pins and rivets to connect with the shovel handle. The shovel handle can be made of wood or metal according to needs and usage costs. The user can then hold the shovel handle and step on the shoulder 2 to apply a downward digging force to the serrated shovel, so that the shovel edge 7 of the serrated shovel contacts the ground surface, and then the shovel head 6 gradually penetrates under the ground surface. With the help of the inwardly concave and arc-shaped shovel edge 7, compared with the traditional convex arc shovel edge 7, the contact area can be effectively reduced, thereby effectively concentrating the stress, reducing the wear rate of the shovel edge 7, and increasing the service life of the serrated shovel. The teeth 3 arranged on the side of the shovel head 6 can improve the cutting ability of the shovel, and are mainly used for cutting and chopping some small branches, weeds and other plants. At the same time, the lever hole 5 arranged on the upper part of the shovel head 6 can also be used to tighten or disassemble parts such as nuts and studs.
[0019] Generally speaking, terms should be understood, at least in part, based on the context in which they are used. For example, as used herein, the term "one or more" can be used to describe any feature, structure, or characteristic in the singular sense, or can be used to describe a combination of features, structures, or characteristics in the plural sense, depending at least in part on the context. Similarly, terms such as "a," "an," or "the" can also be understood to convey either singular or plural usage, depending at least in part on the context.
[0020] It should be readily understood that “on,” “above,” and “over” in this disclosure should be interpreted in the broadest manner, such that “on” means not only “directly on something,” but also includes “on something” with intervening features or layers therebetween, and “above” or “over” includes not only the meaning of “above” or “over,” but also includes “above” or “over” with no intervening features or layers therebetween (i.e., directly on something).
[0021] Additionally, spatially relative terms, such as "below," "beneath," "beneath," "above," and the like, may be used herein for ease of description to describe the relationship of one element or feature relative to other elements or features as shown in the figures. Spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. The device may be in other orientations (rotated 90 degrees or at other orientations), and the spatially relative descriptors used herein should be interpreted accordingly.
[0022] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.
Claims
1. A serrated shovel with an arc-shaped shovel edge, comprising an integrally formed shovel head and shovel shank, characterized in that: Saw teeth with cutting function are symmetrically formed on both sides of the shovel head. The edges of the saw teeth have a 45° chamfer. The end of the shovel head is formed with an inwardly concave and arc-shaped shovel edge. The curvature of the shovel edge is 0.75rad, and the ratio between its radius and the far end of the shovel head is 1.3~1.5:
1. The shovel head is symmetrically arranged with wrench holes of different sizes on both sides near the shovel pants for rotating and adjusting bolts and nuts.
2. The serrated shovel with an arc-shaped shovel edge according to claim 1, characterized in that: A cutting edge is formed on the surface of the shovel edge.
3. The serrated shovel with an arc-shaped shovel edge according to claim 1, characterized in that: The surface of the shovel head is concave, with an angle of 120 to 145 degrees.
4. The serrated shovel with an arc-shaped shovel edge according to claim 1, characterized in that: The width of the shovel head varies evenly from the proximal end to the distal end, gradually changing from wide to narrow.
5. The serrated shovel with an arc-shaped shovel edge according to claim 1, characterized in that: The width ratio between the proximal end and the distal end is 1.6 to 1.8:
1.
6. The serrated shovel with an arc-shaped shovel edge according to claim 1, characterized in that: The length ratio between the shovel head and the shovel pants is 1 to 1.5:
1.
7. The serrated shovel with an arc-shaped shovel edge according to claim 1, characterized in that: The surface of the spade pants is evenly arranged with anti-skid contact points protruding outwards, and the surface of the shoulder strap is provided with anti-skid patterns protruding outwards.
8. The serrated shovel with an arc-shaped shovel edge according to claim 1, characterized in that: The upper part of the shovel head is symmetrically provided with bent shoulder pedals on both sides of the shovel pants for the user to step on and apply force.
9. The serrated shovel with an arc-shaped shovel edge according to claim 1, characterized in that: The included angle between the teeth is a negative reflex angle.
10. The serrated shovel with an arc-shaped shovel edge according to claim 1, characterized in that: The roots of the saw teeth are formed with arcs to enhance the connection strength and transition.