Wear-resistant rotary excavating tooth

Abstract

The utility model discloses a wear-resistant rotary excavating tooth, which belongs to the field of rotary excavating teeth and comprises a tooth handle, a tooth body is fixedly arranged at the upper end of the tooth handle, a tooth head is fixedly arranged at the upper end of the tooth body, a raised head is fixedly arranged at the upper end of the tooth head, a plurality of radial grooves are formed in the tooth head, and a hard alloy head is fixedly clamped on the raised head. The protruding head is connected with the hard alloy head in a clamped mode, the protruding head limits and supports the hard alloy head and improves the limiting stability, the limiting strip is connected with the radial groove in a clamped mode, then the hard alloy head is limited and reinforced through connection of the threaded groove and the bolt, and therefore the installation stability of the hard alloy head is improved; the hard alloy head is stressed during rotation, so that friction damage of the tooth head is avoided, the working effect is improved through the hard alloy head, meanwhile, the whole rotary excavating tooth is reinforced through the arrangement of the column core, the long inclined ribs and the short inclined ribs, and the firmness of the rotary excavating tooth is improved.

Description

Technical Field

[0001] The utility model relates to the field of rotary digging teeth, and more specifically, to a wear-resistant rotary digging tooth. Background Art

[0002] For example, a rotary drilling tooth disclosed in announcement number CN208267768U solves the problem of low operating efficiency. The key points of its technical solution are that it includes a main body and a separately arranged alloy head. The main body includes an integrally forged shank and tooth head. The main body is a hollow structure and has a channel running through the shank and the tooth head. A drive shaft is rotatably arranged in the channel. Both ends of the drive shaft have spline portions. The tail end of the alloy head is embedded in the channel and cooperates with the spline portion of the drive shaft. A bearing is connected between the alloy head and the tooth head, thereby achieving the function of bidirectional drive and improving operating efficiency.

[0003] It can be seen from the above-mentioned public scheme that the main stress point of the rotary digging tooth is currently at the head of the rotary digging tooth, so the head of the rotary digging tooth is seriously damaged and has a short service life. The damage affects the use effect. At the same time, the firmness of the rotary digging tooth does not enhance the protective effect, thereby reducing the use of the rotary digging tooth. Utility Model Content

[0004] The utility model aims to provide a wear-resistant rotary digging tooth to solve the problems of protecting the head of the rotary digging tooth and strengthening the entire rotary digging tooth.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a wear-resistant rotary excavation tooth, comprising a tooth shank, a tooth body is fixedly provided at the upper end of the tooth shank, a tooth head is fixedly provided at the upper end of the tooth body, a convex head is fixedly provided at the upper end of the tooth head, the tooth head is provided with a plurality of radial grooves, a cemented carbide head is fixedly clamped on the convex head, a plurality of limit strips are fixedly provided on the lower end of the cemented carbide head, a plurality of thread grooves are provided on the tooth head, a bolt is clamped inside the thread groove by threaded rotation, a column core is fixedly provided inside the tooth shank, the tooth body and the tooth head, a plurality of long The inclined ribs are fixedly provided with a plurality of short inclined ribs at the lower end of the column core, and the carbide head is clamped by the convex head, and the convex head performs limit support on the carbide head to increase the limit stability, and the limit strip is clamped by the diameter groove, and then the carbide head is limited and reinforced by the connection of the thread groove and the bolt, thereby increasing the installation stability of the carbide head, and the carbide head wraps the tooth head and the convex head. When rotating, the carbide head is subjected to force, thereby avoiding friction damage to the tooth head, and the carbide head increases the working effect. At the same time, through the setting of the column core, long inclined ribs and short inclined ribs, the entire rotary excavation tooth is reinforced to increase the firmness of the rotary excavation tooth.

[0006] Preferably, the length of the tooth shank is smaller than the length of the tooth body, and the length of the tooth head is larger than the length of the tooth body.

[0007] Preferably, the carbide head is clamped on the upper end of the tooth head, and the limit strip is clamped on the inside of the radial groove.

[0008] Preferably, the bolt is threadably rotated through the limiting strip, and the diameter of the column core is greater than the diameter of the long oblique rib.

[0009] Preferably, the diameter of the long oblique rib is the same as the diameter of the short oblique rib, and the length of the long oblique rib is greater than the length of the short oblique rib.

[0010] Compared with the prior art, the beneficial effects of the utility model are:

[0011] The utility model clamps the carbide head with the convex head, and the convex head performs limit support on the carbide head, thereby increasing the limit stability; the limit strip is clamped with the diameter groove, and then the carbide head is limited and reinforced by the connection between the thread groove and the bolt, thereby increasing the installation stability of the carbide head; the carbide head wraps the tooth head and the convex head, and the carbide head is subjected to force during rotation, thereby avoiding friction damage to the tooth head, and the carbide head increases the working effect.

[0012] The utility model reinforces the entire rotary digging tooth by arranging the column core, the long oblique ribs and the short oblique ribs, thereby increasing the firmness of the rotary digging tooth. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0014] Figure 2 It is a partial structural schematic diagram of the utility model;

[0015] Figure 3 It is a sectional view of the overall structure of the utility model.

[0016] Description of the numbers in the figure:

[0017] 1. Tooth shank, 2. tooth body, 3. tooth head, 4. convex head, 5. radial groove, 6. carbide head, 7. limit strip, 8. thread groove, 9. bolt, 10. column core, 11. long oblique rib, 12. short oblique rib. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model; it is obvious that the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the utility model without making creative work are within the scope of protection of the utility model. Example 1

[0019] See also Figure 1-3A wear-resistant rotary digging tooth shown in the figure includes a tooth shank 1, a tooth body 2 is fixedly provided on the upper end of the tooth shank 1, a tooth head 3 is fixedly provided on the upper end of the tooth body 2, a convex head 4 is fixedly provided on the upper end of the tooth head 3, the tooth head 3 is provided with a plurality of radial grooves 5, a cemented carbide head 6 is fixedly clamped on the convex head 4, a plurality of limit strips 7 are fixedly provided on the lower end of the cemented carbide head 6, a plurality of thread grooves 8 are provided on the tooth head 3, a bolt 9 is clamped inside the threaded groove 8 by threaded rotation, a column core 10 is fixedly provided inside the tooth shank 1, the tooth body 2 and the tooth head 3, a plurality of long oblique ribs 11 are fixedly provided on the upper end of the column core 10, and a plurality of short oblique ribs 12 are fixedly provided on the lower end of the column core 10.

[0020] In order to facilitate the protection of the tooth head, the length of the tooth shank 1 is smaller than the length of the tooth body 2, the length of the tooth head 3 is larger than the length of the tooth body 2, the carbide head 6 is clamped on the upper end of the tooth head 3, and the limit strip 7 is clamped on the inside of the radial groove 5.

[0021] In this embodiment, the carbide head 6 is clamped by the convex head 4, and the convex head 4 provides limit support for the carbide head 6 to increase the limit stability. The limit strip 7 is clamped by the diameter groove 5, and then the carbide head 6 is limited and reinforced by the connection between the threaded groove 8 and the bolt 9, thereby increasing the installation stability of the carbide head 6. The carbide head 6 wraps the tooth head 3 and the convex head 4. The carbide head 6 is subjected to force during rotation, thereby avoiding friction damage to the tooth head 3 and increasing the working effect. Example 2

[0022] See also Figure 1-3 The present embodiment further explains Example 1. The figure shows a wear-resistant rotary excavation tooth, including a shank 1. A tooth body 2 is fixedly provided on the upper end of the shank 1. A tooth head 3 is fixedly provided on the upper end of the tooth body 2. A convex head 4 is fixedly provided on the upper end of the tooth head 3. The tooth head 3 is provided with a plurality of radial grooves 5. A cemented carbide head 6 is fixedly clamped on the convex head 4. A plurality of limiting strips 7 are fixedly provided on the lower end of the cemented carbide head 6. A plurality of thread grooves 8 are provided on the tooth head 3. Bolts 9 are clamped inside the thread grooves 8 by threaded rotation. A column core 10 is fixedly provided inside the shank 1, the tooth body 2 and the tooth head 3. A plurality of long oblique ribs 11 are fixedly provided on the upper end of the column core 10, and a plurality of short oblique ribs 12 are fixedly provided on the lower end of the column core 10.

[0023] In order to facilitate the reinforcement of the rotary digging teeth, the bolt 9 is threaded through the limit strip 7, the diameter of the column core 10 is larger than the diameter of the long oblique rib 11, the diameter of the long oblique rib 11 is the same as the diameter of the short oblique rib 12, and the length of the long oblique rib 11 is greater than the length of the short oblique rib 12.

[0024] In this embodiment, the entire rotary digging tooth is reinforced by providing the column core 10, the long oblique ribs 11 and the short oblique ribs 12, thereby increasing the strength of the rotary digging tooth.

[0025] When the rotary digging tooth rotates, the tooth head 3 is first subjected to force. The tooth head 3 is wrapped by the carbide head 6, which not only wraps and protects the tooth head 3 but also increases its sharpness to facilitate the rotation work. Through the arrangement of the column core 10, the long oblique ribs 11 and the short oblique ribs 12, the entire rotary digging tooth is reinforced to increase the firmness of the rotary digging tooth.

[0026] The above is only a preferred specific implementation of the utility model; however, the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solution and improved ideas of the utility model within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model.

Claims

1. A wear-resistant rotary excavator tooth, comprising a tooth shank (1), characterized in that: The upper end of the tooth shank (1) is fixedly provided with a tooth body (2), the upper end of the tooth body (2) is fixedly provided with a tooth head (3), the upper end of the tooth head (3) is fixedly provided with a convex head (4), the tooth head (3) is provided with a plurality of radial grooves (5), the convex head (4) is fixedly clamped with a hard alloy head (6), the lower end of the hard alloy head (6) is fixedly provided with a plurality of limit strips (7), the tooth head (3) is provided with a plurality of thread grooves (8), the interior of the thread groove (8) is clamped with a bolt (9) by threaded rotation, the interior of the tooth shank (1), the tooth body (2) and the tooth head (3) is fixedly provided with a column core (10), the upper end of the column core (10) is fixedly provided with a plurality of long oblique ribs (11), and the lower end of the column core (10) is fixedly provided with a plurality of short oblique ribs (12).

2. The wear-resistant rotary excavator tooth according to claim 1, characterized in that: The length of the tooth shank (1) is smaller than the length of the tooth body (2), and the length of the tooth head (3) is larger than the length of the tooth body (2).

3. The wear-resistant rotary excavator tooth according to claim 1, characterized in that: The hard alloy head (6) is clamped on the upper end of the tooth head (3), and the limiting strip (7) is clamped on the inside of the radial groove (5).

4. The wear-resistant rotary excavator tooth according to claim 1, characterized in that: The bolt (9) is threadably rotated through the limiting strip (7), and the diameter of the column core (10) is greater than the diameter of the long oblique rib (11).

5. The wear-resistant rotary excavator tooth according to claim 1, characterized in that: The diameter of the long oblique rib (11) is the same as the diameter of the short oblique rib (12), and the length of the long oblique rib (11) is greater than the length of the short oblique rib (12).

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