Cutting pick structure of coal mining machine

Abstract

The utility model provides a cutting pick structure of a coal mining machine, which relates to the technical field of coal mining machines and comprises a positioning end, a sleeve, an alloy head, an alloy head positioning component and a rod body, one end of the sleeve is connected with the positioning end in an inserted manner, the other end of the sleeve is provided with the rod body, and the top of the alloy head penetrates through a through groove of the positioning end from the inside of the sleeve. One end of the alloy head positioning assembly is fixedly connected with the alloy head, and the other end of the alloy head positioning assembly abuts against the rod body. Through the arrangement of the limiting plate, the shell of the sleeve is connected to the positioning end in an inserted mode, the alloy head and the alloy head positioning assembly are integrally inserted into the shell, the base of the alloy head positioning assembly is limited to move front and back, and the cutting tooth structure can be disassembled into a plurality of parts; and moreover, disassembly and assembly are easy to operate, replacement is convenient, and the cutting pick with a good working effect is provided for the coal mining machine, so that operation is simple and easy.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of coal mining machine, concretely is a coal mining machine tooth structure. BACKGROUND

[0002] The coal mining machine tooth is installed on the large mining equipment for coal mining, and the coal mining machine tooth is a cutting tool for coal mining, is usually made of high strength alloy steel, has the characteristics of wear resistance, corrosion resistance and high temperature resistance, is usually installed on the cutter of the heading machine, and the underground coal seam is excavated through rotation and cutting.

[0003] The prior art coal mining machine tooth structure is prone to wear of the contact surface of the tooth due to high strength work, and the wear degree of different parts is also different, but most of the teeth are integrated, and the replacement of the whole tooth will increase the cost, and if the wear is not serious, the coal seam mining efficiency will be affected. UTILITY MODEL CONTENT

[0004] The utility model discloses a coal mining machine tooth structure, to solve above prior art coal mining machine tooth structure of the background art, due to high strength work, the contact surface of the tooth is prone to wear, and the wear degree of different parts is also different, but most of the teeth are integrated, and the replacement of the whole tooth will increase the cost, and if the wear is not serious, the coal seam mining efficiency will be affected.

[0005] To achieve the above object, the utility model provides the following technical scheme: a coal mining machine tooth structure, including fixed end, sleeve, alloy head, alloy head positioning assembly and rod body, one end of sleeve is connected with fixed end, the other end of sleeve installs rod body, the top of alloy head passes through the through slot of fixed end from the inside of sleeve, alloy head positioning assembly is arranged in the inside of sleeve, one end is fixedly connected with alloy head, and the other end abuts against rod body.

[0006] Preferably, the outer diameter of the alloy head matches the inner diameter of the through slot of the fixed end, and a rubber strip is installed between the fixed end and the alloy head on the fixed end.

[0007] Preferably, the sleeve includes a housing and a connecting end, the small-diameter end of the housing is connected with the fixed end, and the large-diameter end of the housing is provided with the connecting end.

[0008] Preferably, one side of the fixed end connected with the housing is provided with a ring groove, and the end of the housing is provided with a convex edge, and the convex edge is matched with the position of the ring groove.

[0009] Preferably, the housing is provided with a plurality of groups of tooth pieces on the circumferential side.

[0010] Preferably, the connecting end is divided into two parts, the part close to the shell has a small caliber, and the part far from the shell has a large caliber.

[0011] Preferably, the inside of the part with a large caliber of the connecting end is provided with a first thread, the one end of the rod body is provided with a second thread on the lateral side, and the connecting end is threadedly connected with the one end of the rod body.

[0012] Preferably, a plurality of positioning holes are arranged on the one end of the connecting end far from the first thread, a threaded hole corresponding to the position of the connecting end positioning hole is arranged on the rod body, and a fixing nail is installed through the threaded hole of the rod body from the outside of the connecting end.

[0013] Preferably, the part with a small caliber of the connecting end is provided with a groove, the alloy head positioning assembly comprises a base, the lateral side of the base is provided with a convex part, the convex part is matched with the position of the groove, and the base is inserted and connected in the part with a small caliber of the connecting end.

[0014] Preferably, the alloy head positioning assembly further comprises a top base, a damping part and a support part, the top base is fixedly connected with one end of the alloy head in the shell, the support part connects the top base and the base, and a plurality of damping parts are arranged between the top base and the support part.

[0015] Compared with the prior art, the utility model has the advantages that:

[0016] The utility model discloses a sleeve is inserted and connected in the positioning end through the setting of the limiting plate, the alloy head and the whole alloy head positioning assembly are inserted in the shell, the base of alloy head positioning assembly is limited by the connecting end and cannot move forward, the rod body is installed to the large caliber part of the connecting end, the base cannot move backward, the cutting tooth structure can be split into a plurality of components, mainly the alloy head and the sleeve these easy-wearing components and the alloy head positioning assembly and the rod body these not-easy-to-damage components, the not-easy-to-damage components can be repeatedly used, and the cost is saved. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is the schematic diagram of the cutting tooth structure of the coal mining machine of the utility model.

[0018] Figure 2 It is the internal schematic diagram of the cutting tooth sleeve section of the utility model.

[0019] Figure 3 It is the sleeve section structure schematic diagram of the utility model.

[0020] Figure 4 It is the alloy head and alloy head positioning assembly connecting structure schematic diagram of the utility model.

[0021] Figure 5 It is the positioning end and alloy head connecting structure schematic view of the utility model.

[0022] Figure 6 It is the alloy head positioning assembly structure schematic view of the utility model.

[0023] Figure 7 It is the rod body and connecting end connecting structure schematic view of the utility model.

[0024] Figure 8 It is the connecting end structure schematic view of the utility model.

[0025] In the drawing: 1, positioning end;11, ring groove;12, adhesive tape;2, sleeve;21, shell;211, tooth piece;212, convex edge;22, connecting end;221, first thread;222, positioning hole;223, recess;3, alloy head;4, alloy head positioning assembly;41, top seat;42, damping;43, support piece;44, base;441, convex piece;5, rod body;51, second thread;52, threaded hole;6, fixing nail. DETAILED DESCRIPTION

[0026] The technical scheme in the embodiments of the utility model will be described clearly and completely below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the utility model.

[0027] One embodiment provided by the utility model: as Figure 1 The utility model discloses a coal winning machine pick structure, which comprises a positioning end 1, a sleeve 2, an alloy head 3, an alloy head positioning assembly 4, a rod body 5 and a fixing nail 6.

[0028] As Figure 1 , Figure 2 and Figure 3 As shown in the drawing, the sleeve 2 comprises a shell 21 and a connecting end 22, the small-caliber end of the shell 21 is connected to the positioning end 1 in a plug-in manner, the positioning end 1 is connected to one side of the shell 21 and is provided with a ring groove 11, the end of the shell 21 is provided with a convex edge 212, and the convex edge 212 is matched with the position of the ring groove 11.

[0029] The shell 21 is provided with a plurality of tooth pieces 211 on the circumferential side.

[0030] The large-caliber end of the shell 21 is provided with the connecting end 22, the connecting end 22 is divided into two parts, the part close to the shell 21 has a small caliber, and the part away from the shell 21 has a large caliber.

[0031] As Figure 4, Figure 5 and Figure 6 As shown, both the alloy head 3 and the alloy head positioning assembly 4 are disposed inside the sleeve 2. The top of the alloy head 3 can pass through the through groove of the positioning end 1 from inside the sleeve 2. The outer diameter of the alloy head 3 matches the inner diameter of the through groove of the positioning end 1. An adhesive strip 12 is installed on the positioning end 1 between the positioning end 1 and the alloy head 3. The alloy head positioning assembly 4 includes a top seat 41, a damper 42, a support member 43, and a base 44. The top seat 41 is fixedly connected to one end of the alloy head 3 inside the housing 21. The support member 43 connects the top seat 41 and the base 44. Multiple sets of dampers 42 are provided between the top seat 41 and the support member 43.

[0032] like Figure 7 As shown, the smaller diameter portion of the connecting end 22 has a groove 223, and the base 44 has a protrusion 441 around its periphery. The protrusion 441 mates with the groove 223, and the base 44 is inserted into the smaller diameter portion of the connecting end 22. The outer diameter of the base 44 is larger than the inner diameter of the smaller diameter portion of the connecting end 22.

[0033] like Figure 8 As shown, the inner side of the larger diameter portion of the connecting end 22 is provided with a first thread 221, and the circumferential side of one end of the rod body 5 is provided with a second thread 51. The connecting end 22 is threadedly connected to one end of the rod body 5. The end of the rod body 5 mounted on the connecting end 22 abuts against the base 44.

[0034] The connecting end 22 is provided with multiple sets of positioning holes 222 at the end away from the first thread 221. The rod body 5 is provided with threaded holes 52 corresponding to the positioning holes 222 of the connecting end 22. Fixing nails 6 are installed through the threaded holes 52 of the rod body 5 from the outside of the connecting end 22.

[0035] Installation steps: First, insert the housing 21 of the sleeve 2 into the positioning end 1, with the protruding edge 212 just entering the position of the annular groove 11; fix the alloy head 3 to the top seat 41 of the alloy head positioning assembly 4 with screws; insert the alloy head 3 and the alloy head positioning assembly 4 into the housing 21 as a whole, and the base 44 of the alloy head positioning assembly 4 is limited to the small diameter part of the connecting end 22 and cannot move forward. At this time, the head of the alloy head 3 protrudes from the positioning end 1; then install the rod body 5 to the large diameter part of the connecting end 22. When the rod body 5 is installed and tightened, it restricts the base 44 from moving backward. Finally, install the fixing nail 6 so that the rod body 5 is relatively fixed to the connecting end 22, thus completing the installation operation of the coal mining machine cutting tooth.

[0036] The pick structure of the coal mining machine can be split into multiple components, mainly the alloy head 3 and the sleeve 2 which are easily worn parts and the alloy head positioning assembly 4 and the rod body 5 which are not easily damaged parts, the not easily damaged parts can be reused, saving costs; at the same time, the easily worn parts can be replaced with new parts according to the wear condition of different parts, and the disassembly and installation are easy to operate, convenient to replace, and provide the coal mining machine with a good working effect.

[0037] When the pick is in the working state of the coal mining machine, the alloy head 3 is the part closest to the coal seam, and when the alloy head 3 is under pressure, the damper 42 between the top seat 41 and the support 43 can play a role in shock absorption and buffering, reducing the damage of the reaction force of the coal mining equipment to the pick itself, prolonging the service life of the pick.

[0038] When the damper 42 is in action, the alloy head 3 will retract into the shell 21, and the rubber strip 12 between the alloy head 3 and the positioning end 1 can prevent coal dust from entering the shell 21 and affecting the normal working effect of the damper 42.

[0039] In the working state of the coal mining machine pick, the multiple sets of tooth pieces 211 on the side of the shell 21 increase the friction between the shell 21 and the coal seam, improving the coal mining efficiency.

[0040] Due to the fixed manner of the convex part 441 and the groove 223, the base 44 is not easy to rotate relative to the connecting end 22 after installation, so the alloy head 3 part will not rotate when contacting the coal mining part, thereby not affecting the force effect of the coal mining machine and improving the coal mining efficiency.

[0041] The fixing nails 6 increase the fixing degree of the rod body 5 and the connecting end 22, which can avoid the loosening of the threaded connection part between the connecting end 22 and the rod body 5 under the vibration in the working state, improving the stability of the pick working.

[0042] The above is only an embodiment of the present application, and the specific structure and characteristics of the scheme are not described in detail. For those skilled in the art, it is obvious that the present application is not limited to the details of the above exemplary embodiments, and can be realized in other specific forms without departing from the spirit or basic characteristics of the present application. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting, the scope of the present application is defined by the appended claims rather than the above description, therefore all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present application. Any reference signs in the claims should not be regarded as limiting the claims.

Claims

1. A structure for a shearer pick characterised by: The utility model provides a kind of alloy head positioning device, including positioning end (1), sleeve (2), alloy head (3), alloy head positioning assembly (4) and stem (5), one end of sleeve (2) is insertedly connected positioning end (1), the other end of sleeve (2) installs stem (5), the top of alloy head (3) passes through the through slot of positioning end (1) from inside sleeve (2), alloy head positioning assembly (4) is arranged inside sleeve (2), one end is fixedly connected alloy head (3), the other end abuts stem (5).

2. A shearer pick construction according to claim 1 wherein: The outer diameter of the alloy head (3) matches the inner diameter of the through slot of the positioning end (1), and a rubber strip (12) is installed on the positioning end (1) between the positioning end (1) and the alloy head (3).

3. A shearer pick construction according to claim 1 wherein: The sleeve (2) includes a housing (21) and a connecting end (22), the small-diameter end of the housing (21) is insertedly connected to the positioning end (1), and the large-diameter end of the housing (21) is provided with the connecting end (22).

4. A shearer pick construction according to claim 3 wherein: One side of the connecting end (22) is provided with a ring groove (11), and the end of the housing (21) is provided with a convex edge (212) matched with the position of the ring groove (11).

5. A shearer pick construction according to claim 3 wherein: The housing (21) is provided with a plurality of tooth pieces (211) on the circumferential side.

6. A shearer pick construction according to claim 3 wherein: The connecting end (22) is divided into two parts, the part close to the housing (21) has a small diameter, and the part away from the housing (21) has a large diameter.

7. A shearer pick construction according to claim 6 wherein: The inside of the part with a large diameter of the connecting end (22) is provided with a first thread (221), and the circumferential side of one end of the stem (5) is provided with a second thread (51), and the connecting end (22) is threadedly connected to one end of the stem (5).

8. A shearer pick construction according to claim 7 wherein: A plurality of positioning holes (222) are arranged at the end of the connecting end (22) away from the first thread (221), and the position corresponding to the positioning hole (222) of the connecting end (22) is provided with a threaded hole (52) of the stem (5), and a fixing nail (6) is installed and fixed through the threaded hole (52) of the stem (5) from the outside of the connecting end (22).

9. A shearer pick construction according to claim 7 wherein: The part with a small diameter of the connecting end (22) is provided with a recess (223), and the alloy head positioning assembly (4) includes a base (44), the circumferential side of the base (44) is provided with a convex piece (441) matched with the position of the recess (223), and the base (44) is insertedly connected to the part with a small diameter of the connecting end (22).

10. A shearer pick construction according to claim 9 wherein: The alloy head positioning assembly (4) further includes a top base (41), a damping (42) and a support (43), one end of the top base (41) is fixedly connected to the alloy head (3) inside the housing (21), the support (43) connects the top base (41) and the base (44), and a plurality of dampings (42) are arranged between the top base (41) and the support (43).

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