Novel dredging knife

Abstract

The utility model belongs to the field of dredging engineering equipment, and provides a novel dredging cutter which comprises a cutter body, cutting edges are arranged on the two sides of the cutter body, cutter teeth are arranged at the top end of the cutter body, a wear-resistant layer is arranged on the surface of each cutter tooth, two main alloy grooves distributed at intervals and open grooves distributed on the two sides of each cutter tooth are formed in the top end of each cutter tooth, and the main alloy grooves are communicated with the open grooves. A main alloy is arranged in the main alloy groove, a side alloy is arranged in the open groove, front auxiliary alloy grooves and rear auxiliary alloy grooves are formed in the positions, close to the tooth body, of the cutter body, the front auxiliary alloy grooves are formed in the two sides of the front face of the cutter body, and the rear auxiliary alloy grooves are formed in the two sides of the rear face of the cutter body. A front abrasion-resistant alloy block and a rear abrasion-resistant alloy block are arranged in the front auxiliary alloy groove and the rear auxiliary alloy groove respectively, and a reinforcing rib is arranged on the waist portion of the cutter body. The novel dredging knife is reasonable in design, simple in structure, good in abrasion resistance, high in impact resistance, long in service life and suitable for large-scale popularization.

Description

Technical Field

[0001] The utility model belongs to the field of dredging engineering equipment, in particular to a novel dredging knife. Background Art

[0002] Dredging is the process of clearing, widening or deepening rivers, lakes and other waters, and excavating earth and stone underwater by manpower or machinery. Dredging in a broad sense includes blasting reefs and beaches by underwater blasting. Dredging projects are widely used in: excavating new waterways, ports and canals; deepening, widening and clearing existing waterways and ports; clearing rivers and channels, desilting reservoirs; excavating foundation pits for hydraulic structures such as docks, shipyards and ship locks; combining dredging with land reclamation and sea reclamation; and removing underwater obstacles.

[0003] The traditional dredging knife adopts an integral casting structure, that is, the whole is made of cast steel material, and its physical wear resistance is relatively uniform. However, due to the different workloads of different parts of the dredging knife in actual work, there are differences in the degree of wear, so the actual life of the dredging knife is short and the reuse rate is low. Utility Model Content

[0004] Aiming at the technical problems existing in the above-mentioned dredging knife, the utility model proposes a new dredging knife with reasonable design, simple structure, good wear resistance, strong impact resistance and long service life.

[0005] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is that the utility model provides a new type of dredging knife, including a knife body, the two sides of the knife body are cutting edges, the top of the knife body is a knife tooth, the surface of the knife tooth is provided with a wear-resistant layer, the top of the knife tooth is provided with two main alloy grooves distributed at intervals and open grooves distributed on both sides of the knife tooth, the main alloy groove is provided with a main alloy, the open groove is provided with a side alloy, the knife body is provided with a front auxiliary alloy groove and a rear auxiliary alloy groove at a position close to the tooth body, the front auxiliary alloy groove is arranged on the front two sides of the knife body, and the rear auxiliary alloy groove is arranged on the rear two sides of the knife body, the front auxiliary alloy groove and the rear auxiliary alloy groove are respectively provided with a front wear-resistant alloy block and a rear wear-resistant alloy block, and the waist of the knife body is provided with reinforcing ribs.

[0006] Preferably, the blade body is of a latch-type structure, a mounting opening connected to the bottom of the blade body is provided inside the blade body, a latch opening connected to the mounting opening is provided on one side of the blade body, and the latch opening is used to install a latch.

[0007] Preferably, the main alloy, the side alloy, the front wear-resistant alloy block and the rear wear-resistant alloy block are all made of tungsten-cobalt cemented carbide and are welded to the cutter teeth and the cutter body by silver brazing.

[0008] Preferably, the blade body is blunted in an arc from the bottom of the cutting edge to the position of the blade teeth.

[0009] Preferably, the bottom of the side alloy is a stepped structure, and the open groove cooperates with the bottom of the side alloy.

[0010] Preferably, there are four front wear-resistant alloy blocks distributed in two groups in the two front auxiliary alloy grooves on both sides of the cutter body, and there are four rear wear-resistant alloy blocks distributed in two groups in the two rear auxiliary alloy grooves on both sides of the cutter body.

[0011] Compared with the prior art, the advantages and positive effects of the utility model are:

[0012] 1. The utility model provides a new type of dredging knife, which can effectively improve the wear resistance and impact resistance of the blade teeth through silver brazing, main alloy and side alloy and the setting of wear-resistant layer. At the same time, the use of reinforcing ribs and front wear-resistant alloy blocks and rear wear-resistant alloy blocks can effectively improve the structural strength of the blade body to avoid the blade body from breaking after wear; and the main alloy, side alloy and front and rear wear-resistant alloy blocks that are over-worn can be cut off and replaced with new ones, which is conducive to extending the comprehensive service life of the tool. The utility model provides a new type of dredging knife with reasonable design, simple structure, good wear resistance, strong impact resistance and long service life, which is suitable for large-scale promotion. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the following is a brief introduction to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0014] Figure 1 A front view of a novel dredging knife provided in an embodiment;

[0015] Figure 2 A side view of a novel dredging knife provided in an embodiment;

[0016] Figure 3 A cross-sectional view of a novel dredging knife provided in an embodiment;

[0017] In the above figures, 1. cutter body; 2. cutting edge; 3. cutter teeth; 4. wear-resistant layer; 5. main alloy groove; 6. open groove; 7. main alloy; 8. side alloy; 9. front auxiliary alloy groove; 10. rear auxiliary alloy groove; 11. front wear-resistant alloy block; 12. rear wear-resistant alloy block; 13. reinforcing ribs; 14. mounting port; 15. latch port. DETAILED DESCRIPTION

[0018] In order to more clearly understand the above-mentioned purpose, features and advantages of the utility model, the utility model is further described below in conjunction with the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict. For the convenience of description, if the words "upper", "lower", "left" and "right" appear below, they only indicate that the upper, lower, left and right directions are consistent with the drawings themselves, and do not limit the structure.

[0019] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments of the following disclosure.

[0020] Examples, such as Figure 1 , Figure 2 and Figure 3 As shown, a new type of dredging knife provided by the utility model comprises a knife body 1, both sides of the knife body 1 are cutting edges 2, the top of the knife body 1 is a knife tooth 3, the surface of the knife tooth 3 is provided with a wear-resistant layer 4, the top of the knife tooth 3 is provided with two main alloy grooves 5 distributed at intervals and open grooves 6 distributed on both sides of the knife tooth 3, the main alloy grooves 5 are provided with a main alloy 7, the open grooves 6 are provided with a side alloy 8, the knife body 1 is provided with a front auxiliary alloy groove 9 and a rear auxiliary alloy groove 10 at a position close to the tooth body, the front auxiliary alloy groove 9 is arranged on both sides of the front of the knife body 1, and the rear auxiliary alloy groove 10 is arranged on both sides of the back of the knife body 1, the front auxiliary alloy groove 9 and the rear auxiliary alloy groove 10 are respectively provided with a front wear-resistant alloy block 11 and a rear wear-resistant alloy block 12, the waist of the knife body 1 is provided with a reinforcing rib 13, and the distribution span of the reinforcing rib 13 at the waist of the knife body 1 is greater than 1 / 2 of the height of the knife body 1.

[0021] Specifically, the front and back faces and the top face of the main alloy 7 can contact the dredging surface of the river channel, and the side faces of the side alloy 8 in addition to the front and back faces and the top face can also contact the dredging surface of the river channel. As working faces, the main alloy 7 and the side alloy 8 can effectively improve the wear resistance and impact resistance of the cutter teeth 3 through silver brazing, and there is also a wear-resistant layer 4 on the surface of the cutter teeth 3 to further improve the wear resistance of the tool. Furthermore, the dredging knife adopts reinforcing ribs 13 to effectively improve the structural strength of the knife body 1, and fully considers the working strength of the cutting edge 2. The front wear-resistant alloy block 11 and the rear wear-resistant alloy block 12 are set on the edge side of the waist, that is, the position of the cutting edge 2, to avoid the breakage of the knife body 1 after wear. Secondly, the over-worn main alloy 7, the side alloy 8 and the front and rear wear-resistant alloy blocks 12 can be cut off and replaced with new ones, which is beneficial to extend the comprehensive service life of the tool.

[0022] In order to improve the assembly performance of the dredging knife, the knife body 1 provided by the utility model is a latch-type structure, the interior of the knife body 1 is provided with a mounting port 14 connected to the bottom thereof, and one side of the knife body 1 is provided with a latch port 15 connected to the mounting port 14, and the latch port 15 is used to install a latch. In this way, the knife body 1 is mounted on the mounting teeth of the knife disc or knife arm of the dredging equipment through the mounting port 14, and the inner wall shape of the mounting port 14 is in surface-to-surface fit with the mounting teeth, and the dredging knife can be effectively fixed on the knife disc or knife arm by inserting a latch into the latch port 15, which has a simple structure and is convenient to install.

[0023] In order to improve the working reliability of the alloy structure on the dredging knife, the main alloy 7, the side alloy 8, the front wear-resistant alloy block 11 and the rear wear-resistant alloy block 12 provided by the utility model are all tungsten-cobalt cemented carbide, and the main alloy 7 and the side alloy 8 are welded to the cutter teeth 3 by silver brazing, and the front wear-resistant alloy block 11 and the rear wear-resistant alloy block 12 are welded to the cutter body 1 by silver brazing. The alloy structure after welding can be matched with the cutter teeth 3 and the cutter body 1, and a relatively reliable connection relationship can be established under the connection of the welding line with sufficient length and area, thereby ensuring that the cutter has good working performance and thus improving the excavation capacity of the dredging equipment.

[0024] In order to prevent the main alloy 7 and the side alloy 8 from being impacted by large-grained sand and gravel and causing the carbide blade to break, the tool body 1 provided by the utility model adopts an arc blunting from the bottom of the cutting edge 2 to the position of the tooth 3, and the main alloy 7 and the side alloy 8 are semi-inlaid, so that the larger impact force in the excavation process has a reasonable transmission path, avoiding the impact force from acting completely on the main alloy 7 and the side alloy 8, thereby ensuring that the main alloy 7 and the side alloy 8 have higher stability and longer service life at the end of the tooth 3.

[0025] Furthermore, since the side alloy 8 has more working surfaces and is subjected to more force, the bottom of the side alloy 8 provided by the utility model is a stepped structure, and the open groove 6 cooperates with the bottom of the side alloy 8. This can increase the force bearing surface of the side alloy 8, extend the length of the silver brazing, and effectively improve the weldability and reliability of the side alloy 8.

[0026] In order to improve the utilization rate of the tool, the utility model provides four front wear-resistant alloy blocks 11, which are divided into two groups and distributed in the two front auxiliary alloy grooves 9 on both sides of the tool body 1, and four rear wear-resistant alloy blocks 12, which are divided into two groups and distributed in the two rear auxiliary alloy grooves 10 on both sides of the tool body 1. In this way, if individual wear-resistant alloy blocks are seriously damaged, they can be replaced in a targeted manner; and each wear-resistant alloy block is welded on the tool body 1, which can effectively match the curvature of the cutting edge 2, which is conducive to reducing the difficulty of manufacturing the wear-resistant alloy blocks.

[0027] The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A novel dredging knife, comprising a knife body, both sides of the knife body are cutting edges, the top of the knife body is a knife tooth, characterized in that: The surface of the tooth is provided with a wear-resistant layer, the top of the tooth is provided with two main alloy grooves distributed at intervals and open grooves distributed on both sides of the tooth, the main alloy groove is provided with a main alloy, the open groove is provided with a side alloy, the tool body is provided with a front auxiliary alloy groove and a rear auxiliary alloy groove at a position close to the tooth body, the front auxiliary alloy groove is provided on both sides of the front of the tool body, and the rear auxiliary alloy groove is provided on both sides of the back of the tool body, the front auxiliary alloy groove and the rear auxiliary alloy groove are respectively provided with a front wear-resistant alloy block and a rear wear-resistant alloy block, and the waist of the tool body is provided with reinforcing ribs.

2. A novel dredging knife according to claim 1, characterized in that: The blade body is a latch-type structure, the interior of the blade body is provided with a mounting opening connected to the bottom thereof, and one side of the blade body is provided with a latch opening connected to the mounting opening, and the latch opening is used to install a latch.

3. A new type of dredging knife according to claim 2, characterized in that: The main alloy, the side alloy, the front wear-resistant alloy block and the rear wear-resistant alloy block are all tungsten-cobalt hard alloys and are welded to the cutter teeth and the cutter body by silver brazing.

4. A novel dredging knife according to claim 3, characterized in that: The knife body is blunted in an arc from the bottom of the cutting edge to the position of the cutting teeth.

5. A novel dredging knife according to claim 4, characterized in that: The bottom of the side alloy is a stepped structure, and the open groove matches the bottom of the side alloy.

6. A novel dredging knife according to claim 5, characterized in that: There are four front wear-resistant alloy blocks distributed in two groups in two front auxiliary alloy grooves on both sides of the cutter body, and there are four rear wear-resistant alloy blocks distributed in two groups in two rear auxiliary alloy grooves on both sides of the cutter body.

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