Universal cutting tooth assembly

Abstract

The invention belongs to the technical field of mining design, and discloses a universal cutting tooth assembly which is characterized in that an inner hole and a first clamping groove are formed in the stress surface of a tooth holder; the universal tooth sleeve comprises a sleeve and a sleeve connecting piece mounted at the top of the sleeve, the sleeve is matched with the inner hole, a cutting tooth mounting hole is formed in the sleeve, and the cutting tooth mounting hole comprises a large inner diameter section and a small inner diameter section which are sequentially communicated; a gear sleeve buckle matched with the first clamping groove is installed on one side of the sleeve connecting piece, and second clamping grooves are symmetrically formed in the top of the sleeve connecting piece. The cutting pick comprises a knife-shaped cutting pick and a pickaxe-shaped cutting pick, a pick handle of the knife-shaped cutting pick and the pickaxe-shaped cutting pick are matched with the cutting pick mounting hole, and a cutting pick buckle matched with the second clamping groove is arranged at the junction of the cutting pick head and the pick handle corresponding to the knife-shaped cutting pick. According to the technical scheme, two types of cutting teeth can be considered at the same time, so that a mine party can specifically select the cutting tooth type according to the change of geological conditions, and the production efficiency and the economic benefit are improved.

Description

Technical Field

[0001] This invention belongs to the field of mining design technology, and in particular relates to a universal cutting tooth assembly. Background Technology

[0002] Coal breaking with cutting tools is the most important and fundamental process in coal mining. Among them, blade-shaped cutting tools are the earliest used and most technologically mature type, while pick-shaped cutting tools are currently the most widely used. Pick-shaped cutting tools currently offer better wear resistance and are more widely used in coal mining, but they generally break smaller coal blocks, resulting in a lower lump coal yield. While blade-shaped cutting tools are not as wear-resistant as pick-shaped tools, they can significantly improve the lump coal yield during mining. Due to the different structures of the two types of cutting tools, there is currently no universal tooth holder, and the auger drum of a coal mining machine equipped with pick-shaped cutting tools cannot be fitted with blade-shaped cutting tools. Therefore, it is necessary to develop a universal cutting tool assembly that combines pick-shaped and blade-shaped cutting tools, allowing mine operators to select the appropriate cutting tool type based on geological conditions and improve economic efficiency. Summary of the Invention

[0003] The purpose of this invention is to provide a universal cutting tooth assembly to solve the problems existing in the prior art.

[0004] To achieve the above objectives, the present invention provides a universal cutting tooth assembly, comprising: A universal gear holder, wherein an inner hole and a first slot are provided on the force-bearing surface of the universal gear holder; A universal toothed sleeve includes a sleeve and a sleeve connector mounted on the top of the sleeve. The sleeve is configured to mate with an inner hole. The sleeve has a cutting tooth mounting hole inside, which includes a large inner diameter section and a small inner diameter section connected in sequence. The small inner diameter section is located below the large inner diameter section. A toothed sleeve buckle that mates with a first slot is installed on one side of the sleeve connector. A second slot is symmetrically arranged on the top of the sleeve connector. The cutting teeth include blade-shaped cutting teeth and pick-shaped cutting teeth. The shanks of the blade-shaped cutting teeth and the pick-shaped cutting teeth are configured to cooperate with the cutting teeth mounting holes. At the junction of the cutting tooth head and the shank of the blade-shaped cutting teeth, a cutting tooth buckle is provided to cooperate with the second slot.

[0005] Optionally, the universal gear seat is also provided with a water hole and a water channel, the water channel being connected to the water hole of the roller.

[0006] Optionally, the large inner diameter section and the small inner diameter section are connected by a 45° step.

[0007] Optionally, an inner groove is provided on the inner sidewall of the small inner diameter section, and the inner groove cooperates with the protruding part of the tooth shank of each cutting tooth.

[0008] Optionally, an alloy head is fixedly installed on the cutting head of the blade-shaped cutting tooth and the pick-shaped cutting tooth.

[0009] Optionally, a discharge blade is provided below the alloy head of the blade-shaped cutting tooth.

[0010] The technical effects of this invention are as follows: This invention provides a universal cutting tooth assembly that, based on the structural characteristics and working principles of blade-shaped and pick-shaped cutting teeth, designs a universal tooth seat and universal tooth sleeve that can simultaneously install blade-shaped and pick-shaped cutting teeth. This allows mine operators to select the appropriate cutting tooth type according to changes in geological conditions, thereby improving the lump coal yield and increasing economic benefits. Attached Figure Description

[0011] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0012] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments and descriptions of this application are used to explain this application and do not constitute an undue limitation of this application. In the drawings: Figure 1 This is a schematic diagram of the structure of a universal cutting tooth assembly for pick-shaped and knife-shaped cutting teeth in an embodiment of the present invention; Figure 2 This is a schematic diagram of a general toothed seat structure in an embodiment of the present invention; Figure 3 This is a schematic diagram of the structure of the universal toothed sleeve in an embodiment of the present invention; Figure 4 This is a schematic diagram of the pick-shaped cutting tooth and the knife-shaped cutting tooth structure in an embodiment of the present invention.

[0013] Labeling Explanation: 1. Universal Gear Seat; 11. Inner Hole; 12. Flat Plane; 13. First Slot; 14. Water Hole; 15. Water Channel; 2. Universal Gear Sleeve; 21. First Snap-on; 22. Outer Diameter; 23. Inner Diameter; 24. Second Slot; 25. Inner Channel; 3. Cutting Tooth; 31. Alloy Head; 32. Exhaust Blade; 33. Gear Shank; 34. Cutting Tooth Snap-on. Detailed Implementation

[0014] The technical solutions of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0015] To facilitate understanding of the present invention, a more comprehensive description of the invention will be given below with reference to the accompanying drawings, and several embodiments of the invention will be provided. However, the invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of the invention will be more thorough and complete.

[0016] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only. The terms “include,” “including,” “have,” “contain,” etc., used in this article are all open-ended terms, meaning that they include but are not limited to.

[0017] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0018] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the specification of this invention is for the purpose of describing particular embodiments only and is not intended to limit the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0019] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0020] like Figures 1-4 As shown, this embodiment provides a universal cutting tooth assembly, including: A universal gear seat 1, wherein an inner hole 11 and a first slot 13 are provided on the force-bearing surface of the universal gear seat 1; A universal toothed sleeve 2 includes a sleeve and a sleeve connector mounted on the top of the sleeve. The sleeve is configured to mate with the inner hole 11. The sleeve has a cutting tooth mounting hole inside, which includes a large inner diameter section and a small inner diameter section connected in sequence. The small inner diameter section is located below the large inner diameter section. A toothed sleeve buckle that mates with the first slot 13 is installed on one side of the sleeve connector. A second slot 24 symmetrically arranged is provided on the top of the sleeve connector. The cutting tooth 3 includes a knife-shaped cutting tooth and a pick-shaped cutting tooth. The tooth shank 33 of the knife-shaped cutting tooth and the pick-shaped cutting tooth are configured to cooperate with the cutting tooth mounting hole. The cutting tooth head corresponding to the knife-shaped cutting tooth is provided with a cutting tooth buckle that cooperates with the second slot 24 at the junction of the tooth shank 33.

[0021] This embodiment designs a universal tooth holder that can accommodate both types of cutting teeth, based on their structural characteristics and working principles. This allows mine operators to select the appropriate cutting tooth type according to changes in geological conditions, thereby increasing the lump coal yield and economic benefits.

[0022] Universal cutting tool components for pick-shaped and knife-shaped cutting tools, such as Figure 1 As shown, it includes a universal gear seat 1, a universal gear sleeve 2, and a cutting tooth 3.

[0023] The structure of the general gear seat 1 is as follows Figure 2 As shown, the tooth holder has an inner hole 11 and a first groove 13 on its stress-bearing surface, as well as a water hole 14 and a water channel 15. The inner hole 11 mates with the outer diameter of the universal tooth sleeve 2, and the installation position of the tooth sleeve is restricted by the plane 12. Both the plane 12 and the inner hole 11 are the main stress-bearing surfaces. The first groove 13 engages with the tooth sleeve to restrict the rotation of the tooth sleeve relative to the tooth holder, preventing friction between the outer diameter of the tooth sleeve and the inner hole 11 of the tooth holder, which would cause the inner hole 11 to expand and significantly reduce the life of the tooth holder. The water hole 14 communicates with the water channel 15, and a nozzle is installed through a pipe thread for spraying water to reduce the temperature of the cutting tooth, enhance its wear resistance, and increase its service life. The water channel 15 communicates with the water passage of the drum, and the bottom of the tooth holder is welded around its perimeter to achieve fixation and sealing.

[0024] The structure of the universal gear sleeve 2 is as follows Figure 3 As shown, the outer diameter 22 mates with the inner hole 11 of the gear holder, ensuring that the diameter dimensions are the same and concentric. The inner diameter 23 mates with the outer diameter of the tooth shank 33 of the cutting tooth 3. The inner diameter has two sizes, large and small, transitioned by a 45° step. The small diameter section of the inner diameter 23 has an inner groove 25 near the tail of the tooth sleeve, which is used to mate with the protruding part of the retaining ring of the cutting tooth 3, ensuring that the cutting tooth will not be thrown out during the cutting process. The first snap 21 mates with the first slot 13 of the universal gear holder 1. After installation, the first snap 21 is embedded in the first slot 13, ensuring that the tooth sleeve will not rotate freely in the inner hole 11 of the gear holder.

[0025] The cutting teeth are divided into knife-shaped cutting teeth and pick-shaped cutting teeth, and their structures are as follows: Figure 4 As shown, the alloy head 31 is the main cutting part of the cutting tooth and is generally fixed to the head of the cutting tooth by brazing. The tooth shank 33 of the cutting tooth matches the inner diameter 23 of the universal tooth sleeve 2 to ensure that the diameter is the same and the inner and outer diameters are concentric.

[0026] The knife-shaped cutting tooth differs from the pick-shaped cutting tooth in that it has a discharge blade 32 below its alloy head, which is used to remove dense cores in a timely manner, thereby improving the lump coal rate during the cutting process. There are also two cutting tooth latches 34 at the junction with the tooth shank 33, which cooperate with the second slot 24 of the universal tooth sleeve 2 to ensure that the knife-shaped cutting tooth does not rotate freely in the tooth sleeve, so that the cutting edge of the cutting tooth alloy head always faces the coal wall, thus avoiding the chipping of the cutting edge.

[0027] The pick-shaped cutting tooth has no snap-fit ​​structure. After being installed in place, it can rotate freely inside the tooth sleeve. This characteristic can be used to improve the wear resistance of the cutting tooth.

[0028] In summary, this embodiment, based on the structural characteristics and working principles of blade-shaped and pick-shaped cutting teeth, designs a universal tooth holder and universal tooth sleeve capable of simultaneously installing blade-shaped and pick-shaped cutting teeth. For manufacturers, the newly designed cutting tooth assembly is installed in the same way as traditional cutting tooth assemblies, both being fixed to the auger drum of the coal mining machine by welding. The cutting angle, water flow method, etc., are also identical, allowing for the use of the same design methods for the auger drum of the coal mining machine. For mine operators, the application of the newly designed cutting tooth assembly allows coal mining enterprises to select the type of cutting teeth used on the drum based on the geological conditions of the fully mechanized mining face: under favorable geological conditions such as few interbedded rocks and no faults, replacing the blade-shaped cutting teeth can increase the lump coal rate and increase the profitability of the coal mining enterprise; under conditions of faults, many interbedded rocks, and the need to cut a certain amount of rock, replacing the pick-shaped cutting teeth can improve the drum's cutting performance, reduce the frequency of cutting tooth replacement, and increase production efficiency.

[0029] The above description is merely a preferred embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A universal cutting tooth assembly, characterized in that, include: A universal gear seat (1) is provided with an inner hole (11) and a first slot (13) on the force-bearing surface. A universal toothed sleeve (2) includes a sleeve and a sleeve connector installed on the top of the sleeve. The sleeve is fitted with the inner hole (11). The sleeve has a cutting tooth mounting hole inside, which includes a large inner diameter section and a small inner diameter section connected in sequence. The small inner diameter section is located below the large inner diameter section. A toothed sleeve buckle that fits with the first slot (13) is installed on one side of the sleeve connector. A second slot (24) is symmetrically arranged on the top of the sleeve connector. Cutting teeth (3), the cutting teeth (3) include knife-shaped cutting teeth and pick-shaped cutting teeth. The tooth shanks (33) of the knife-shaped cutting teeth and the pick-shaped cutting teeth are configured to cooperate with the cutting teeth mounting holes. The cutting teeth (3) corresponding to the knife-shaped cutting teeth are provided with a cutting teeth buckle (34) that cooperates with the second slot (24) at the junction of the head of the cutting teeth (3) and the tooth shank (33).

2. The universal cutting tooth assembly according to claim 1, characterized in that, The universal toothed seat (1) is also provided with a water hole (14) and a water channel (15) that are connected together. The water channel (15) is connected to the water hole of the roller.

3. A universal cutting tooth assembly according to claim 1, characterized in that, The large inner diameter section and the small inner diameter section are connected by a 45° step.

4. A universal cutting tooth assembly according to claim 1, characterized in that, An inner groove (25) is provided on the inner sidewall of the small inner diameter section, and the inner groove (25) is engaged with the retaining ring of the tooth shank (33) of each cutting tooth (3).

5. A universal cutting tooth assembly according to claim 1, characterized in that, An alloy head (31) is fixedly installed on the head of the blade-shaped cutting tooth and the pick-shaped cutting tooth (3).

6. A universal cutting tooth assembly according to claim 5, characterized in that, A drain blade (32) is provided below the alloy head (31) of the blade-shaped cutting tooth.

Images