A U-shaped chisel

Abstract

The utility model discloses a kind of U-shaped chisels, it is related to chisel technical field, to solve the problem of insufficient chip flute cutting of existing U-shaped chisel, poor quality of groove. The U-shaped chisel includes integrally arranged connecting handle and chisel head, and the chisel head is provided with chip flute, the end of chip flute away from connecting handle is provided with blade edge, chip flute bottom has horizontal contact plane, chip flute both sides are provided with vertical contact plane, and blade edge extends and covers to the end of horizontal contact plane. Through the multidimensional contact plane structure of "bottom horizontal+two sides vertical", the synchronous full cutting of groove bottom and side wall is realized, avoids debris residue, greatly improves construction efficiency;While increasing the contact area of chisel head and workpiece, reducing chisel offset, improving operation stability, prolonging tool service life, can meet the trenching needs of cable laying or pipeline pre-buried on concrete, hard ceramic and other workpieces.

Description

Technical Field

[0001] This utility model relates to the field of chisel technology, specifically a U-shaped chisel. Background Technology

[0002] In the fields of construction, power, and ceramics processing, U-shaped chisels are often used to cut grooves in concrete, hard ceramics, and other workpieces for laying cables or pre-burying pipes. Existing U-shaped chisels mainly consist of a one-piece connected handle and a chisel head. The chisel head has a chip removal groove, and the end of the groove away from the connected handle has a cutting edge, but its chip removal groove is mostly an arc structure.

[0003] This type of arc-shaped chip removal groove has obvious shortcomings in actual excavation: the two sides of the chip removal groove cannot form a stable cutting contact with the workpiece, and cutting is only done by the edge of the cutting edge, which makes it difficult to fully cut the material on both sides of the groove. The residual chips need to be cleaned up or repeatedly cut, which affects the construction efficiency. In addition, the poor flatness of the groove sidewall may damage the cables or pipes laid later.

[0004] Therefore, it is urgent to optimize and improve the existing U-shaped chisel chip removal groove structure to solve problems such as insufficient cutting, poor groove quality, low efficiency and short service life, so as to meet the actual construction needs. Utility Model Content

[0005] In view of the shortcomings of the prior art, this utility model provides a U-shaped chisel.

[0006] The technical solution adopted by this utility model is: a U-shaped chisel, including an integrally formed connecting handle and a chisel head, the chisel head is provided with a chip removal groove, the end of the chip removal groove away from the connecting handle is provided with a cutting edge, the bottom of the chip removal groove has a horizontal contact plane, the two sides of the chip removal groove are provided with vertical direct contact planes, and the cutting edge extends to cover the end of the horizontal contact plane.

[0007] Furthermore, the chip removal groove has a U-shaped structure.

[0008] Furthermore, the chip removal groove gradually thickens from the cutting edge end to the connecting handle end.

[0009] Furthermore, there is a rounded transition between the horizontal contact plane and the vertical direct contact plane.

[0010] Furthermore, the connecting handle includes a straight rod section and an arc section. One end of the arc section is connected to the chisel head, and the other end is connected to the straight rod section. The end of the straight rod section has a connecting part that is adapted to connect with a power tool.

[0011] Furthermore, the included angle α between the straight rod section and the chisel head is 135-155°.

[0012] Furthermore, the horizontal contact plane and the vertical direct contact plane are arranged perpendicular to each other.

[0013] The beneficial effects of this utility model are: 1. Improved cutting efficiency and construction efficiency: The chip removal groove has a horizontal contact plane at the bottom and vertical direct contact planes on both sides that extend to cover the ends of the horizontal contact plane. During excavation, a multi-directional stable cutting contact can be formed from the bottom to both sides. The horizontal contact plane can accurately cut the material at the bottom of the groove, while the vertical direct contact planes on both sides can thoroughly cut the material on the sidewalls of the groove. This avoids the chip residue problem caused by the ineffective contact between the sides of the existing arc groove, eliminating the need for additional cleaning procedures and significantly improving construction efficiency.

[0014] 2. Enhanced chiseling stability and extended tool life: The horizontal contact plane at the bottom of the chip groove increases the contact area with the workpiece, effectively preventing chisel head deviation during chiseling, improving operational stability, and reducing chiseling difficulty. Furthermore, stable contact cutting reduces localized stress concentration on the chisel head, slows down the wear rate of the cutting edge and groove walls, extends the overall service life of the U-shaped chisel, and reduces construction costs.

[0015] In addition to the objectives, features, and advantages described above, this utility model has other objectives, features, and advantages. The utility model will now be described in further detail with reference to the accompanying drawings. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model.

[0017] Figure 2 This is a schematic diagram from another perspective of the present invention.

[0018] Figure 3 This is a side view of the present invention.

[0019] Figure 1-3 In the middle: 1. Connecting handle; 2. Chisel head; 3. Chip removal groove; 4. Cutting edge; 5. Horizontal contact plane; 6. Vertical direct contact plane; 7. Rounded transition; 8. Straight rod section; 9. Rounded section; 10. Connecting part. Detailed Implementation

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

[0021] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0022] This utility model provides a U-shaped chisel.

[0023] In this embodiment, refer to Figure 1-3 The U-shaped chisel includes an integrally formed connecting handle 1 and a chisel head 2. The chisel head 2 is provided with a chip removal groove 3. The chip removal groove 3 is provided with a cutting edge 4 at one end away from the connecting handle. The bottom of the chip removal groove has a horizontal contact plane 5. The two sides of the chip removal groove are provided with vertical direct contact planes 6. The cutting edge extends to cover the end of the horizontal contact plane.

[0024] In this embodiment, a multi-dimensional contact structure of "horizontal bottom + vertical sides" is constructed by setting a horizontal contact plane at the bottom of the chip removal groove and setting vertical direct contact planes on both sides of the chip removal groove (with the vertical direct contact planes extending to cover the ends of the horizontal contact planes). During chiseling, the horizontal contact plane can form a full-fit contact with the bottom of the groove, and the vertical direct contact plane can form a complete corresponding contact with the sidewall of the groove. This changes the existing method of only contacting the edges of the arc groove, allowing the cutting force to be evenly transmitted to the workpiece through multiple planes. This solves the problem of incomplete cutting of the sidewall of the existing arc groove, avoids chip residue, eliminates the need for additional cleaning procedures, and improves construction efficiency; secondly, the multi-plane fit ensures that the bottom of the groove is flat and the sidewall is smooth, meeting the accuracy requirements of cable / pipe laying and preventing damage to cables or pipes due to unevenness of the groove; thirdly, it increases the contact area between the chisel and the workpiece, reduces the probability of deviation during chiseling, improves operational stability, and reduces the difficulty of chiseling.

[0025] Specifically, the chip removal groove has a U-shaped structure.

[0026] Specifically, the chip removal groove gradually thickens from the cutting edge end to the connecting handle end.

[0027] In this embodiment, the thin-edged cutting edge design reduces initial chiseling resistance, making it easier for the operator to apply force and reducing physical exertion, especially effective on hard concrete / ceramic workpieces; in addition, the thickened connecting shank end improves the chisel's impact resistance, allowing it to withstand greater chiseling force without easily being damaged, thus extending the overall service life of the chisel.

[0028] Specifically, there is a circular arc transition between the horizontal contact plane and the vertical direct contact plane.

[0029] In this embodiment, a rounded transition is provided between the horizontal contact plane and the vertical direct contact plane. The smoothness of the rounded surface avoids the formation of sharp edges at the junction of the two planes. During chiseling, the rounded transition can disperse the cutting stress transmitted between the two planes, while reducing the jamming of debris at the junction, allowing the debris to be smoothly discharged along the transition surface.

[0030] Specifically, the connecting handle includes a straight rod section 8 and an arc section 9. One end of the arc section is connected to the chisel head, and the other end is connected to the straight rod section. The end of the straight rod section has a connecting part 10 that is adapted to connect with a power tool.

[0031] In this embodiment, the connecting handle is divided into a straight section and an arc section. The arc section connects the chisel head and the straight section, and the end of the straight section is provided with a connecting part adapted to the power tool. The arc section allows for an angle transition between the chisel head and the straight section, adapting to different operating postures in different construction scenarios and conforming to ergonomics. The connecting part, through standardized adaptation structures (such as threads, bayonets, etc.), achieves a stable connection between the chisel and the power tool (such as an electric hammer, impact drill), enabling the power of the power tool to be efficiently transmitted to the chisel head.

[0032] Specifically, the included angle α between the straight rod section and the chisel head is 135-155°.

[0033] In this embodiment, the angle between the straight rod section and the chisel head is 135-155°. This angle range is designed based on ergonomics and construction scenario requirements: at this angle, when the operator holds the straight rod section, the chisel head can naturally fit the workpiece surface without excessive adjustment of the arm posture, while the impact force of the power tool can be efficiently transmitted to the chisel head cutting edge along the angle direction.

[0034] Specifically, the horizontal contact plane and the vertical contact plane are arranged perpendicular to each other.

[0035] In this embodiment, the horizontal contact plane and the vertical direct contact plane are set perpendicular to each other. This vertical structure is perfectly matched with the ideal shape of the workpiece groove, which is "horizontal at the bottom and vertical at the sidewalls". This allows the planar structure of the chip removal groove to accurately correspond to the target shape of the groove. During cutting, the groove can be directly processed according to its ideal dimensions without the need for subsequent finishing.

[0036] Attention all technical personnel: Although this utility model has been described according to the specific embodiments above, the concept of this utility model is not limited to this utility model. Any modification that utilizes the concept of this utility model will be included within the scope of protection of this patent right.

Claims

1. A U-shaped chisel, comprising an integrally formed connecting handle and a chisel head, wherein the chisel head is provided with a chip removal groove, and a cutting edge is provided at the end of the chip removal groove away from the connecting handle, characterized in that: The bottom of the chip removal groove has a horizontal contact plane, and the two sides of the chip removal groove are provided with vertical direct contact planes. The cutting edge extends to cover the end of the horizontal contact plane.

2. The U-shaped chisel according to claim 1, characterized in that: The chip removal groove has a U-shaped structure.

3. The U-shaped chisel according to claim 1, characterized in that: The chip removal groove gradually thickens from the cutting edge to the connecting handle.

4. The U-shaped chisel according to claim 1, characterized in that: The horizontal contact plane and the vertical direct contact plane are connected by a rounded transition.

5. The U-shaped chisel according to any one of claims 1-4, characterized in that: The connecting handle includes a straight section and an arc section. One end of the arc section is connected to the chisel head, and the other end is connected to the straight section. The end of the straight section has a connecting part that is adapted to connect with a power tool.

6. The U-shaped chisel according to claim 5, characterized in that: The included angle α between the straight rod section and the chisel head is 135-155°.

7. The U-shaped chisel according to claim 1, characterized in that: The horizontal contact plane and the vertical direct contact plane are arranged perpendicularly to each other.

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