Composite hard alloy coal mining cutting pick

Abstract

The utility model relates to the technical field of coal mining equipment, in particular to a composite hard alloy coal mining cutting pick, which is characterized in that a pick body is protected by a plurality of detachable sheaths for sacrifice wear, the whole cutting pick does not need to be replaced, and the replacement cost is reduced; comprising a tooth handle, a tooth body and a tooth head, the tooth handle and the tooth body are integrally formed, the tooth body is concentrically arranged at the end of the tooth handle, and the tooth head is installed at the top end of the tooth body; the tooth further comprises a plurality of protective sleeves, the protective sleeves are detachably installed on the outer wall of the tooth body, and the outer surfaces of the protective sleeves all extend out of the outer surface of the tooth body.

Description

Technical Field

[0001] The utility model relates to the technical field of coal mining equipment, in particular to a composite hard alloy coal mining pick. Background Art

[0002] The pick is one of the vulnerable parts in coal mining and tunnel excavation machinery, and is the main tool for dropping and crushing coal. The Chinese utility model patent with the prior art publication number CN220955576U proposes a new type of coal mining pick, the tooth head and the tooth body of the coal mining pick are detachably connected. When the tooth head is worn, only the tooth head can be replaced to avoid waste on the tooth body and the shank. When the tooth head is installed, the first positioning protrusion on the tooth head is placed in the positioning groove, so that the threaded hole on the tooth head is aligned with the countersunk hole on the tooth body, thereby improving the fixing efficiency of the tooth head.

[0003] However, the tooth body of the pick in the prior art will come into contact with the coal seam and the rock during use, causing wear. When the tooth body is worn, the pick needs to be replaced as a whole, resulting in high replacement costs. Utility Model Content

[0004] In order to solve the above technical problems, the utility model provides a composite carbide coal mining pick which protects the tooth body by multiple detachable sheaths for sacrificial wear, thereby eliminating the need to replace the pick as a whole and reducing replacement costs.

[0005] The composite carbide coal mining pick of the utility model comprises a shank, a tooth body and a tooth head. The shank and the tooth body are integrally formed, the tooth body is concentrically arranged on the end of the shank, and the tooth head is installed on the top end of the tooth body; it also comprises a plurality of sleeves, the plurality of sleeves are detachably installed on the outer wall of the tooth body, and the outer surfaces of the plurality of sleeves all extend out of the outer surface of the tooth body; the shank is installed on the pick seat during operation, and the pick seat drives the shank, the tooth body and the tooth head to move during coal mining, so that the tooth head hits and cuts the coal seam, causing the coal seam to scatter, and at the same time, the plurality of sleeves contact the coal seam instead of the tooth body, so that the plurality of sleeves are worn and sacrificed, and when the plurality of sleeves are worn and thinned to the outer surface of the tooth body, the plurality of sleeves are removed and replaced with new sleeves, thereby protecting the tooth body, and there is no need to replace the pick as a whole, thereby reducing the replacement cost.

[0006] Preferably, it also includes multiple positioning pins and multiple welds. Multiple positioning pins are arranged on the outer surface of the tooth body, and multiple sleeves are provided with sockets matching the positioning pins. The multiple positioning pins are respectively inserted into the sockets of the multiple sleeves, and the sockets of the sleeves are welded to the positioning pins by plug welding to form welds; the multiple sleeves are snapped onto the outer surface of the tooth body, and the multiple positioning pins are respectively inserted into the sockets of the multiple sleeves to achieve positioning of the multiple sleeves, the welds are formed by plug welding and the sleeves are welded and fixed to the positioning pins, which is firmly fixed and easy to operate. When the multiple sleeves are worn and sacrificed, the multiple welds are also worn and thinned. When the multiple welds are worn and sacrificed, the multiple sleeves reach the standard that needs to be replaced. At this time, it is convenient to remove the multiple sleeves from the multiple positioning pins, thereby improving the convenience of installing and replacing the sleeves.

[0007] Preferably, the ends of the plurality of positioning pins are tapered; the tapered end surfaces of the plurality of positioning pins can increase the contact area between the weld and the sleeve and the positioning pins, thereby improving the installation firmness of the sleeve and the tooth body and the positioning pins.

[0008] Preferably, through countersunk holes are provided on the multiple sleeves, and threaded holes are provided on the outer wall of the tooth body, and multiple bolts pass through the countersunk holes of the multiple sleeves and are screwed to the threaded holes of the tooth body respectively; the multiple sleeves are installed and fastened on the outer surface of the tooth body by bolts, which is convenient for installation and disassembly. When the multiple sleeves are worn and sacrificed to the extent that the bolts are exposed, the multiple sleeves reach the standard for replacement. At this time, the multiple sleeves can be conveniently removed from the tooth body, thereby improving the convenience of installing and replacing the sleeves.

[0009] Preferably, it also includes a plurality of reinforcing ribs. The plurality of reinforcing ribs are arranged on the outer surface of the tooth body, the plurality of reinforcing ribs are respectively located between the plurality of sheaths, and the outer surfaces of the plurality of reinforcing ribs are lower than the outer surfaces of the plurality of sheaths; the plurality of reinforcing ribs reinforce the structure of the tooth body, and the plurality of reinforcing ribs limit and position the plurality of sheaths, thereby improving the stability of the plurality of sheaths.

[0010] Preferably, it also includes a snap-in groove, in which an annular snap-in groove is arranged on the outer wall of one end of the shank away from the tooth body; by providing the snap-in groove, after the shank is inserted into the pick seat, the snap-in groove is snap-connected with the limiting structure inside the pick seat, thereby improving the installation accuracy and firmness of the shank.

[0011] Preferably, it also includes multiple sliding grooves, and the multiple sliding grooves are evenly arranged on the outer wall circumference of the shank, and the multiple sliding grooves are arranged along the axis of the shank; the multiple sliding grooves match the limit keys of the pick seat, so that after the shank is installed on the pick seat, the shank will not rotate, thereby improving the firmness of the shank and the tooth body, and facilitating the adjustment of the relative angle between the shank and the pick seat, so that the sheath with less wear can be rotated to an angle that is prone to wear, so that the wear of multiple sheaths is more even, further reducing the cost of replacing the pick.

[0012] Compared with the prior art, the utility model has the following beneficial effects: the shank is installed on the pick seat during operation; when mining coal, the pick seat drives the shank, tooth body and tooth head to move, so that the tooth head hits and cuts the coal seam, causing the coal seam to scatter; at the same time, multiple sleeves replace the tooth body to contact the coal seam, so that multiple sleeves are worn and sacrificed; when the multiple sleeves are worn and thinned to the outer surface of the tooth body, the multiple sleeves are removed and replaced with new sleeves, thereby protecting the tooth body. There is no need to replace the pick as a whole, thereby reducing the replacement cost. BRIEF DESCRIPTION OF THE DRAWINGS

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

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

[0015] Figure 3 It is a schematic diagram of the axonometric structure of the utility model when a sheath is removed;

[0016] Figure 4 It is a structural schematic diagram of the utility model in a decomposed state.

[0017] Markings in the attached figure: 1, tooth shank; 2, tooth body; 3, tooth head; 4, sleeve; 5, positioning pin rod; 6, weld; 7, reinforcing rib; 8, slot; 9, slide groove. DETAILED DESCRIPTION

[0018] In order to facilitate the understanding of the utility model, the utility model will be described more comprehensively below with reference to the relevant drawings. The utility model can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the utility model more thorough and comprehensive.

[0019] Example 1

[0020] like Figures 1 to 4As shown, the composite cemented carbide coal mining pick comprises a shank 1, a tooth body 2 and a tooth head 3, the shank 1 and the tooth body 2 are integrally formed, the tooth body 2 is concentrically arranged on the end of the shank 1, and the tooth head 3 is installed on the top end of the tooth body 2; it also includes a plurality of sleeves 4, the plurality of sleeves 4 are detachably mounted on the outer wall of the tooth body 2, and the outer surfaces of the plurality of sleeves 4 all extend out of the outer surface of the tooth body 2; it also includes a plurality of positioning pins 5 and a plurality of welds 6, a plurality of positioning pins 5 are arranged on the outer surface of the tooth body 2, the plurality of sleeves 4 are all arranged with sockets matching the positioning pins 5, the plurality of positioning pins 5 are respectively inserted into the sockets of the plurality of sleeves 4, and the sockets of the sleeves 4 are welded to the positioning pins 5 by plug welding to form welds 6; the ends of the plurality of positioning pins 5 are tapered; it also includes a plurality of reinforcing ribs 7, a plurality of reinforcing ribs 7 are arranged on the outer surface of the tooth body 2, the plurality of reinforcing ribs 7 are respectively located between the plurality of sleeves 4, and the outer surfaces of the plurality of reinforcing ribs 7 are lower than the outer surfaces of the plurality of sleeves 4.

[0021] The plurality of sheaths 4 are buckled onto the outer surface of the tooth body 2, and the plurality of positioning pins 5 are respectively inserted into the insertion holes of the plurality of sheaths 4 to realize the positioning of the plurality of sheaths 4. The weld 6 is formed by plug welding and the sheath 4 is welded and fixed to the positioning pin 5. The fixing is firm and the operation is simple. The tapered end faces of the plurality of positioning pins 5 can increase the contact area between the weld 6 and the sheath 4 and the positioning pin 5, thereby improving the installation firmness of the sheath 4 and the tooth body 2 and the positioning pin 5. The plurality of reinforcing ribs 7 strengthen the structure of the tooth body 2, and the plurality of reinforcing ribs 7 limit and position the plurality of sheaths 4, thereby improving the plurality of The stability of the sleeve 4. The shank 1 is installed on the pick seat during operation. When mining coal, the pick seat drives the shank 1, the tooth body 2 and the tooth head 3 to move, so that the tooth head 3 hits and cuts the coal seam, causing the coal seam to scatter. At the same time, multiple sleeves 4 replace the tooth body 2 to contact the coal seam, so that multiple sleeves 4 are worn and sacrificed, and multiple welds 6 are worn and thinned at the same time. When multiple welds 6 are worn and sacrificed, multiple sleeves 4 reach the standard for replacement. At this time, it is convenient to remove the multiple sleeves 4 from the multiple positioning pin rods 5 and replace them with new sleeves 4, thereby protecting the tooth body 2. There is no need to replace the pick as a whole, thereby reducing the replacement cost.

[0022] Example 2

[0023] like Figure 1 As shown, the composite carbide coal mining pick comprises a shank 1, a tooth body 2 and a tooth head 3. The shank 1 and the tooth body 2 are integrally formed, the tooth body 2 is concentrically arranged on the end of the shank 1, and the tooth head 3 is installed on the top end of the tooth body 2; it also includes a plurality of sleeves 4, the plurality of sleeves 4 are detachably mounted on the outer wall of the tooth body 2, and the outer surfaces of the plurality of sleeves 4 extend out of the outer surface of the tooth body 2; through countersunk holes are arranged on the plurality of sleeves 4, and threaded holes are arranged on the outer wall of the tooth body 2, and a plurality of bolts respectively pass through the countersunk holes of the plurality of sleeves 4 and are screwed to the threaded holes of the tooth body 2.

[0024] Multiple sleeves 4 are installed and fastened on the outer surface of the tooth body 2 by bolts, which is convenient for installation and disassembly. When the multiple sleeves 4 are worn and sacrificed to the extent that the bolts are exposed, the multiple sleeves 4 reach the standard for replacement. At this time, the multiple sleeves 4 can be conveniently removed from the tooth body 2, thereby improving the convenience of installing and replacing the sleeves 4.

[0025] Example 3

[0026] like Figure 1 , Figure 3 and Figure 4 As shown, on the basis of embodiments 1 and 2, it also includes a slot 8, and an annular slot 8 is arranged on the outer wall of the end of the shank 1 away from the tooth body 2; it also includes a plurality of slide grooves 9, and a plurality of slide grooves 9 are evenly arranged on the circumference of the outer wall of the shank 1, and the plurality of slide grooves 9 are arranged along the axis of the shank 1.

[0027] By setting the card slot 8, after the shank 1 is inserted into the pick seat, the card slot 8 is connected with the limiting structure inside the pick seat, thereby improving the installation accuracy and firmness of the shank 1. The multiple slide grooves 9 match the limiting keys of the pick seat, so that after the shank 1 is installed on the pick seat, the shank 1 will not rotate, thereby improving the firmness of the shank 1 and the tooth body 2, and also facilitating the adjustment of the relative angle between the shank 1 and the pick seat, so that the sheath 4 with less wear can be rotated to an angle that is prone to wear, so that the wear of multiple sheaths 4 is more even, further reducing the cost of replacing the pick.

[0028] like Figures 1 to 4 As shown, the composite carbide coal mining pick of the utility model, when working, first the shank 1 is installed on the pick seat, the slot 8 is connected with the limiting structure inside the pick seat, and the multiple slide grooves 9 are matched with the limiting keys of the pick seat, so that after the shank 1 is installed on the pick seat, the shank 1 will not rotate. Then, when mining coal, the pick seat drives the shank 1, the tooth body 2 and the tooth head 3 to move, so that the tooth head 3 hits and cuts the coal seam, causing the coal seam to scatter, and then multiple sleeves 4 replace the tooth body 2 to contact the coal seam, so that multiple sleeves 4 are worn and sacrificed. When multiple sleeves 4 are worn and thinned to the outer surface of the tooth body 2, the relative angle between the shank 1 and the pick seat is adjusted, so that the sleeves 4 with less wear are rotated to an angle that is easy to wear, so that the wear of multiple sleeves 4 is more even, and finally when all the sleeves 4 are worn to the standard that needs to be replaced, the multiple sleeves 4 are removed and replaced with new sleeves 4, thereby protecting the tooth body 2, and there is no need to replace the pick as a whole, thereby reducing the replacement cost.

[0029] The main functions achieved by this utility model are:

[0030] 1. The tooth body is protected by multiple removable sheaths for sacrificial wear, so there is no need to replace the pick as a whole, thus reducing the replacement cost;

[0031] 2. By adjusting the relative angle between the shank and the pick seat, multiple sheaths can be evenly worn and replaced after they are sacrificed, further reducing the replacement cost;

[0032] 3. The sheath is easy to disassemble, replace and install.

[0033] The installation method, connection method or setting method of the composite carbide coal mining pick of the utility model are all common mechanical methods, and can be implemented as long as they can achieve their beneficial effects; the shank 1, tooth body 2, tooth head 3, and positioning pin rod 5 of the composite carbide coal mining pick of the utility model are purchased on the market, and technicians in the industry only need to install and operate them according to the accompanying instruction manual, without the need for technical personnel in this field to make creative labor.

[0034] All technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0035] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A composite cemented carbide coal mining pick, comprising a shank (1), a tooth body (2) and a tooth head (3), wherein the shank (1) and the tooth body (2) are integrally formed, the tooth body (2) is concentrically arranged on the end of the shank (1), and the tooth head (3) is installed at the top end of the tooth body (2); characterized in that: It also comprises a plurality of protective sleeves (4), which are detachably mounted on the outer wall of the tooth body (2), and the outer surfaces of the plurality of protective sleeves (4) all extend out of the outer surface of the tooth body (2).

2. The composite carbide coal mining pick according to claim 1, characterized in that: The invention also comprises a plurality of positioning pins (5) and a plurality of welds (6). The plurality of positioning pins (5) are arranged on the outer surface of the tooth body (2), and the plurality of sleeves (4) are all provided with insertion holes matching the positioning pins (5). The plurality of positioning pins (5) are respectively inserted into the insertion holes of the plurality of sleeves (4), and the insertion holes of the sleeves (4) and the positioning pins (5) are welded to form welds (6) by plug welding.

3. The composite carbide coal mining pick according to claim 2, characterized in that: The ends of the plurality of positioning pin rods (5) are tapered.

4. The composite carbide coal mining pick according to claim 1, characterized in that: Through countersunk holes are arranged on the plurality of sleeves (4), threaded holes are arranged on the outer wall of the tooth body (2), and the plurality of bolts respectively pass through the countersunk holes of the plurality of sleeves (4) and are screwed to the threaded holes of the tooth body (2).

5. The composite carbide coal mining pick according to claim 1, characterized in that: It also comprises a plurality of reinforcing ribs (7). The plurality of reinforcing ribs (7) are arranged on the outer surface of the tooth body (2). The plurality of reinforcing ribs (7) are respectively located between the plurality of protective sleeves (4). The outer surfaces of the plurality of reinforcing ribs (7) are lower than the outer surfaces of the plurality of protective sleeves (4).

6. The composite carbide coal mining pick according to claim 1, characterized in that: It also comprises a clamping groove (8), and an annular clamping groove (8) is arranged on the outer wall of one end of the tooth handle (1) away from the tooth body (2).

7. The composite carbide coal mining pick according to claim 1, characterized in that: It also comprises a plurality of slide grooves (9), wherein the plurality of slide grooves (9) are evenly arranged on the circumference of the outer wall of the tooth handle (1), and the plurality of slide grooves (9) are arranged along the axis of the tooth handle (1).

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