CN219218157U

CN219218157U - Ceramic alloy powder laser cladding coal cutting pick

Info

Publication number: CN219218157U
Application number: CN202222698166.8U
Authority: CN
Inventors: 王士剑; 张娜; 于俊果; 张红卫; 李飞飞; 吕品; 翟士民; 李忠朋; 呼金燕
Original assignee: Shandong Hechuang Laser Technology Co ltd
Current assignee: Shandong Hechuang Laser Technology Co ltd
Priority date: 2022-10-13
Filing date: 2022-10-13
Publication date: 2023-06-20
Anticipated expiration: 2032-10-13

Abstract

The utility model belongs to the technical field of application of mining mechanical accessories, and particularly relates to a ceramic alloy powder laser cladding coal cutting pick. Including the coal pick body, the coal pick body has set gradually the carbide head from the top downwards, is used for fixed carbide head's body head, sets up at body head keep away from the cylinder of carbide head one end, sets up the tooth handle in the cylinder below, wherein, body head is round platform form setting, be provided with wear-resisting arch on the lateral wall of body head, wear-resisting arch is water droplet form setting, wear-resisting arch is annular evenly distributed on the lateral wall of body head, be provided with upper and lower two-layer wear-resisting arch on the body head, wear-resisting arch is ceramic alloy powder laser cladding setting on the lateral wall of body head. The ceramic alloy powder has the advantages that the wear resistance of the ceramic alloy powder is matched with the unique water drop shape and the reasonable up-and-down staggered layout, so that the wear resistance and the chipping resistance of the coal cutting pick are effectively improved, and the market competitiveness of the product is further improved.

Description

Ceramic alloy powder laser cladding coal cutting pick

Technical Field

The utility model belongs to the technical field of application of mining mechanical accessories, and particularly relates to a ceramic alloy powder laser cladding coal cutting pick.

Background

The coal cutting pick is one of the vulnerable parts in coal mining and tunnel tunneling machinery, and is a main tool for coal dropping and coal crushing. The existing coal cutting pick mainly comprises a cutter type cutting pick and a pick type cutting pick, and the most used pick type cutting pick in China at present.

At present, the matrix of the coal cutter used by the coal cutter is a pure steel body with the surface hardness lower than HRC65, and the coal cutter head is made of hard alloy. In the use process, the matrix on the side surface of the coal cutting pick is not wear-resistant and impact-resistant, and the welding coal cutting pick head is easy to separate, so that the whole service life of the coal cutting pick is shortened, the service time of the coal cutting pick is short, the maintenance and replacement times are frequent, the labor efficiency is low, the labor intensity is high, the coal cutting cost is high, and the pick is used for directly cutting coal and rock and is worn and impacted by abrasive particles of the coal and the rock, so that the basic requirements on the pick are as follows: the tooth head has high wear resistance; the body has high strength and toughness. When meeting gangue and faults, the cutter head is required to have good wear resistance and impact resistance, and the cutter head is not cracked and the cutter body is not worn. For this reason, how to provide the performance of the coal pick is the important research and development direction of the coal pick manufacturers at present.

Disclosure of Invention

Aiming at the performance requirement of the coal cutting pick, the utility model provides the ceramic alloy powder laser cladding coal cutting pick which is reasonable in design, convenient to process and excellent in performance.

In order to achieve the above purpose, the technical scheme includes that the ceramic alloy powder laser cladding coal cutting pick comprises a coal cutting pick body, a hard alloy head, a body head used for fixing the hard alloy head, a cylinder arranged at one end of the body head far away from the hard alloy head and a tooth handle arranged below the cylinder are sequentially arranged from top to bottom, wherein the body head is arranged in a circular truncated cone shape, wear-resistant protrusions are arranged on the side wall of the body head and are arranged in a water drop shape, the wear-resistant protrusions are uniformly distributed on the side wall of the body head in a ring shape and are arranged close to the hard alloy head, an upper layer of wear-resistant protrusions and a lower layer of wear-resistant protrusions are arranged on the body head in a staggered mode, the thin head ends of the upper layer of wear-resistant protrusions and the lower layer of wear-resistant protrusions are arranged close to each other, and the wear-resistant protrusions are arranged on the side wall of the body head in a ceramic alloy powder laser cladding mode.

Preferably, the side wall of the body head is also provided with a reinforcing rib, and the reinforcing rib is arranged between the body head and the column body.

Preferably, the reinforcing ribs are uniformly distributed between the body head and the column body in a ring shape.

Preferably, the top surface of the reinforcing rib is arranged in an obtuse angle shape.

Preferably, the side wall of the body head is further provided with a reinforcing groove, and the reinforcing groove is arranged between two adjacent reinforcing ribs.

Compared with the prior art, the utility model has the advantages and positive effects that,

1. the utility model provides a ceramic alloy powder laser cladding coal cutting pick, which utilizes the wear-resisting property of the ceramic alloy powder to match with unique water drop shape and reasonable up-and-down staggered layout, effectively improves the wear resistance and chipping resistance of the coal cutting pick, and further improves the market competitiveness of products. Meanwhile, the utility model has simple structure, convenient processing and obvious test effect, and is suitable for large-scale popularization and use.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort to a person skilled in the art.

FIG. 1 is a schematic diagram of a ceramic alloy powder laser cladding coal pick provided in example 1;

FIG. 2 is a front view of a ceramic alloy powder laser cladding coal pick provided in example 1;

in the above figures, 1, a hard alloy head; 2. a body head; 21. wear-resisting bulges; 22. reinforcing ribs; 23. reinforcing grooves; 3. a column; 4. a tooth handle; 41. a thick tooth handle; 42. a fine tooth handle.

Detailed Description

In order that the above objects, features and advantages of the utility model will be more clearly understood, a further description of the utility model will be rendered by reference to the appended drawings and examples. It should be noted that, in the case of no conflict, the embodiments of the present application and the features in the embodiments may be combined with each other.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model, however, the present utility model may be practiced otherwise than as described herein, and therefore the present utility model is not limited to the specific embodiments of the disclosure that follow.

Example 1, as shown in FIG. 1 and FIG. 2, the embodiment provides a ceramic alloy powder laser cladding coal cutting pick with better wear resistance

In order to achieve the above-mentioned purpose, the ceramic alloy powder laser cladding coal pick that this embodiment provided, including the coal pick body, like current coal pick, the coal pick body that this embodiment provided has set gradually carbide head 1 from the top downwards, be used for fixing carbide head 1's body head 2, set up at body head 2 keep away from the cylinder 3 of carbide head one end, set up the tooth handle 4 in cylinder 3 below, and tooth handle 4 is general coarse tooth handle 41 and the fine tooth handle 42 that set up from top to bottom, in addition, body head 2 is the round platform form setting, cylinder 3 is the cylinder pie form setting, above structure is current common structure, so in this embodiment, not add detailed description.

The important improvement of this embodiment is that the wear-resistant protrusions 21 are provided on the side walls of the body head 2, the wear-resistant protrusions 21 being provided close to the cemented carbide head 1, i.e. the wear-resistant protrusions 21 are provided in the upper part of the body head 2, because the cemented carbide head 1 serves to intercept the coal seam, whereas the cemented carbide head 1 is embedded in the top of the body head 2, for which reason the upper part of the body head 2 is also the most susceptible to wear, and for which reason the wear-resistant protrusions 21 are provided in this position.

In order to improve the wear resistance and impact resistance of the wear-resistant protrusion 21, in this embodiment, the wear-resistant protrusion 21 is in a drop shape, the drop shape referred to in this embodiment is that the end of the entire wear-resistant protrusion 21 is large, and the other end is pointed, so that a common drop shape is formed, and the whole cross section of the drop shape can be regarded as a triangle shape, and it should be noted that in this embodiment, the thickness of the thick end of the wear-resistant protrusion 21 is greater than the thickness of the thin end, so that the wear-resistant protrusion 21 appears to be in an inclined plane from the thick end to the thin end. The advantage of setting up like this is convenient better dispersion atress. Meanwhile, the shape of the water drop also has the characteristic of promoting the rotation speed of the tooth body to quickly dissipate heat.

For better utilization of the wear-resistant protrusions 21, in the embodiment, the wear-resistant protrusions 21 are uniformly distributed on the side wall of the body head 2 in an annular shape, the upper and lower two layers of wear-resistant protrusions 21 are arranged on the body head 2, the upper and lower two layers of wear-resistant protrusions 21 are arranged in a staggered manner, and meanwhile, the thin head ends of the upper and lower two layers of wear-resistant protrusions 21 are arranged in a similar manner, and because the thickness of the thick head ends of the wear-resistant protrusions 21 is larger than that of the thin head ends, the situation that the two ends of the two layers of wear-resistant protrusions 21 are high and low in the middle is formed, protruding points at the two ends are formed, and the impact force of the dispersed coal blocks is utilized.

In order to improve the performance of the wear-resistant protrusions 21, in the present embodiment, the wear-resistant protrusions 21 are made of a ceramic alloy powder and are laser-clad on the side wall of the body head 2. The ceramic alloy has the high temperature resistance and corrosion resistance of ceramic and the ductility and toughness of metal. And the laser cladding forms a metallurgically bonded additive cladding layer on the surface of the base layer by adding cladding materials on the surface of the base material and fusing the cladding materials and the thin layer on the surface of the base material by utilizing a high-energy-density laser beam. Thus, the ceramic alloy powder is coated by laser to form the wear-resistant protrusions 21, so that the wear resistance of the wear-resistant protrusions 21 is further improved.

In order to further increase the strength of the whole coal pick, in this embodiment, reinforcing ribs 22 are also provided on the side walls of the body head 2, the reinforcing ribs 22 being provided between the body head 2 and the cylinder 3. Unlike the conventional case where grooves are directly provided on the side wall of the body head 2 so that the protruding portions form the reinforcing ribs 22, in this embodiment, the reinforcing ribs 22 are individually provided in a ring shape uniformly distributed between the body head 2 and the column body 3. And unlike the conventional reinforcing ribs 22 whose top surfaces are inclined, in this embodiment, the top surfaces of the reinforcing ribs 22 are provided in an obtuse angle. In this way, the top surface of the reinforcing rib 22 also forms a convex angle, so that the impact force received by the head 2 is further dispersed by the protrusions, the impact resistance of the whole coal pick is improved, and of course, the inclined surface of the obtuse angle of the top surface of the reinforcing rib 22, which is close to one end of the body head 2, is longer than the inclined surface, which is close to one end of the column 3, and the inclined surface, which is close to one end of the column 3, is almost horizontally arranged with the column 3, so that the impact resistance of the reinforcing rib 22 is mainly improved.

Of course, as is conventional, a reinforcing groove 23 is also provided in the side wall of the body head 2, the reinforcing groove 23 being provided between two adjacent reinforcing ribs 22. The reinforcing grooves 23 themselves function as reinforcing properties, and for this reason, in the present embodiment, they are not described in detail. Of course, the present embodiment provides a reinforcement groove 23 of a smaller size than conventional coal picks due to the separate arrangement of the reinforcing ribs 22.

Through foretell setting, utilize the setting of the shape and the overall arrangement of water droplet formula wear-resisting protruding 21, make its atress more easily dispersed, and then improve its impact resistance, simultaneously, utilize the laser cladding ceramic alloy powder to make it form wear-resisting protruding 21, improve wear resistance of wear-resisting protruding 21, and then reach the purpose that improves whole coal pick performance. According to detection, the impact toughness of the coal cutting pick provided in the embodiment is greater than 50J/cm ² The shearing strength value of the cutting pick braze welding seam is more than 180MPa. In addition, it should be noted that the structure provided in this embodiment can be applied not only to coal picks but also to tunneling teeth for tunnels.

The present utility model is not limited to the above-mentioned embodiments, and any equivalent embodiments which can be changed or modified by the technical content disclosed above can be applied to other fields, but any simple modification, equivalent changes and modification made to the above-mentioned embodiments according to the technical substance of the present utility model without departing from the technical content of the present utility model still belong to the protection scope of the technical solution of the present utility model.

Claims

1. The utility model provides a ceramic alloy powder laser cladding coal pick, includes the coal pick body, the coal pick body has set gradually the carbide head from the top downwards, is used for fixed carbide head's body head, sets up the cylinder of keeping away from carbide head one end at the body head, sets up the tooth handle in the cylinder below, wherein, the body head is round platform form setting, its characterized in that, be provided with wear-resisting arch on the lateral wall of body head, wear-resisting arch is water droplet form setting, wear-resisting arch is annular evenly distributed on the lateral wall of body head, wear-resisting arch is close to carbide head setting, be provided with upper and lower two-layer wear-resisting arch on the body head, crisscross setting between the upper and lower two-layer wear-resisting arch's thin head end is close to setting, wear-resisting arch is ceramic alloy powder laser cladding setting on the lateral wall of body head.

2. The ceramic alloy powder laser cladding coal pick of claim 1, wherein the body head side wall is further provided with a reinforcing rib, the reinforcing rib being disposed between the body head and the cylinder.

3. The ceramic alloy powder laser cladding coal cutting pick of claim 2, wherein the reinforcing ribs are uniformly distributed between the body head and the cylinder in a ring shape.

4. The ceramic alloy powder laser cladding coal pick of claim 3, wherein the top surface of the reinforcing ribs is provided in an obtuse angle.

5. The ceramic alloy powder laser cladding coal pick of claim 3 or 4, wherein a reinforcing groove is further provided on a side wall of the body head, the reinforcing groove being provided between two adjacent reinforcing ribs.