Tooth holder for improving cutting drum of EKF coal mining machine

Abstract

The utility model relates to the technical field of cutting drums of coal mining machines, and discloses a toothholder for improving an EKF cutting drum of a coal mining machine, which comprises a drum body, a toothholder body is fixedly connected to the outer side of the drum body, a buffer component is mounted in the toothholder body, cutting teeth are slidably connected to the interior of the toothholder body, and the cutting teeth are fixedly connected to the outer side of the drum body. A reinforcing assembly is mounted on the inner side of the toothholder body; the buffer assembly comprises a connecting shell, the connecting shell is fixedly connected into the tooth holder body, a connecting column is slidably connected into the connecting shell, and a buffer plate is fixedly connected to the front side of the connecting column. According to the utility model, under the cooperation of the connecting column, the buffer spring and the buffer plate, the direct collision between the toothholder body and the cutting pick is reduced, and meanwhile, the inner side of the toothholder body adopts a multi-layer material structure of the supporting layer, the buffer layer and the wear-resistant layer, so that the durability of the toothholder and the cutting pick is effectively improved, and the operation stability of the coal mining machine is enhanced.

Description

TECHNICAL FIELD

[0001] The utility model relates to coal winning machine cutting drum technical field especially relates to a kind of tooth holder of improving EKF coal winning machine cutting drum. BACKGROUND

[0002] Coal winning machine cutting drum is the core component of EKF coal winning machine, is responsible for breaking coal seam and conveying coal, its structure usually includes drum body, pick and tooth holder, pick is installed on tooth holder, cuts coal rock when rotating, the design of drum influences coal winning efficiency, cutting resistance and coal powder rate, commonly according to coal seam hardness optimization tooth type and arrangement, in combination with advanced cutting technology, improve wear resistance and working efficiency, widely used in high efficient fully mechanized coal face.

[0003] The tooth holder of coal winning machine cutting drum is an important component for fixing the picks, which directly affects the cutting efficiency and durability. The tooth holder is usually fixed on the drum body by welding or bolt connection, and its design needs to ensure the stable installation of the picks and the ability to withstand high impact load.

[0004] The tooth holder of imported cutting drum of EKF coal winning machine usually adopts non-rotatable pick design, which leads to serious pick eccentric wear during production and causes problems such as deformation of the inner hole of the tooth holder. The large amount of tooth holder wear increases the working resistance of the coal winning machine and the on-site maintenance time, which further affects the service life of the drum. Therefore, a tooth holder for improving the cutting drum of EKF coal winning machine is proposed to solve the above problems. SUMMARY

[0005] To make up for the above shortcomings, the utility model provides a kind of tooth holder of improving EKF coal winning machine cutting drum, to improve the problem of pick eccentric wear seriously, tooth holder inner hole deformation, affect the service life of drum in prior art.

[0006] To achieve the above purpose, the utility model adopts the following technical scheme:

[0007] A kind of tooth holder of improving EKF coal winning machine cutting drum, including drum body, the outside of the drum body is fixedly connected with tooth holder body, buffer assembly is installed in the inside of the tooth holder body, pick is slidably connected in the inside of the tooth holder body, reinforcing assembly is installed in the inside of the tooth holder body;The buffer assembly includes connecting shell, the connecting shell is fixedly connected in the inside of the tooth holder body, connecting column is slidably connected in the inside of the connecting shell, buffer plate is fixedly connected on the front side of the connecting column, the buffer plate is slidably connected in the inside of the tooth holder body;

[0008] As a further description of the above technical scheme:

[0009] The inside of the connecting shell is provided with buffer spring, and the buffer spring is arranged between the connecting column and the connecting shell.

[0010] As a further description of the above technical solutions:

[0011] The reinforcing assembly comprises a support layer, the support layer is made of high-chromium cast iron material, and the support layer is arranged on the inner side of the tooth holder body.

[0012] As a further description of the above technical solutions:

[0013] The reinforcing assembly comprises a buffer layer, the buffer layer is made of high-manganese steel material, and the buffer layer is arranged on the inner side of the tooth holder body.

[0014] As a further description of the above technical solutions:

[0015] The reinforcing assembly comprises a wear-resistant layer, the wear-resistant layer is made of chromium-molybdenum alloy steel material, and the wear-resistant layer is arranged on the inner side of the tooth holder body.

[0016] As a further description of the above technical solutions:

[0017] The reinforcing assembly comprises a support layer, a buffer layer and a wear-resistant layer, the support layer is made of high-chromium cast iron material, the buffer layer is made of high-manganese steel material, the wear-resistant layer is made of chromium-molybdenum alloy steel material, the support layer is arranged on the inner side of the tooth holder body, the buffer layer is arranged on the inner side of the support layer, and the wear-resistant layer is arranged on the inner side of the buffer layer.

[0018] As a further description of the above technical solutions:

[0019] The outer side of the connecting column is fixedly connected with a positioning block, the inner side of the connecting shell is provided with a positioning groove, and the positioning block is slidably connected in the positioning groove.

[0020] As a further description of the above technical solutions:

[0021] The outer side of the cutting tooth is fixedly connected with a limiting ring, the inner side of the tooth holder body is provided with a limiting groove, and the limiting ring is slidably connected in the limiting groove.

[0022] The utility model has the advantages of the following beneficial effects:

[0023] 1、The utility model discloses a buffering plate, a connecting column and a buffer spring are matched, the hard collision between the cutting tooth and the tooth holder body is reduced, impact damage is effectively reduced, the service life of the tooth holder and the cutting tooth is prolonged, and the operation stability of the coal mining machine is improved.

[0024] 2、The utility model discloses a support layer, a buffer layer and a wear-resistant layer multi-layer structure are adopted, the wear resistance and the impact resistance of the tooth holder body are improved, the inner hole is prevented from deforming, the downtime maintenance time is reduced, and the operation efficiency and the durability of the coal mining machine are improved. DRAWINGS

[0025] Figure 1 A three-dimensional view of the tooth holder of the improved EKF coal mining machine cutting drum is shown in the utility model;

[0026] Figure 2 A structure diagram of the connecting shell of the tooth holder of the improved EKF coal mining machine cutting drum is shown in the utility model;

[0027] Figure 3 A structure diagram of the limiting groove of the tooth holder of the improved EKF coal mining machine cutting drum is shown in the utility model;

[0028] Figure 4 A cross-sectional view of the tooth holder body of the tooth holder of the improved EKF coal mining machine cutting drum is shown in the utility model.

[0029] Legend:

[0030] 1, drum body; 2, tooth holder body; 3, buffer assembly; 4, cutting tooth; 5, reinforcing assembly; 501, support layer; 502, buffer layer; 503, wear-resistant layer; 6, connecting shell; 7, connecting column; 8, buffer plate; 9, buffer spring; 10, positioning block; 11, positioning groove; 12, limiting ring; 13, limiting groove. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than 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 protection of the utility model.

[0032] Embodiment one:

[0033] Reference Figure 1 and Figure 2The utility model provides an embodiment: an improve EKF coal winning machine cutting drum's tooth holder, including the drum body 1, the outside fixed connection of drum body 1 has tooth holder body 2, the inside mounting of tooth holder body 2 has buffer assembly 3, the inside sliding connection of tooth holder body 2 has cutting pick 4, the inside mounting of tooth holder body 2 has reinforcing component 5, buffer assembly 3 includes the connecting shell 6, the inside fixed connection of connecting shell 6 is at tooth holder body 2, uses connecting shell 6 to protect the structure inside, the inside sliding connection of connecting shell 6 has connecting column 7, the front side fixed connection of connecting column 7 has buffer plate 8, and buffer plate 8 is slidingly connected in the inside of tooth holder body 2, and cutting pick 4 moves inwards and contacts buffer plate 8, makes buffer plate 8 with connecting column 7 move back.

[0034] Referring to Figure 1 And Figure 4 Reinforcing component 5 includes support layer 501, and support layer 501 is high chromium cast iron material, and support layer 501 is arranged at the inside of tooth holder body 2, can ensure the stability and rigidity of the whole structure of tooth holder, carries the whole stress, prevents the deformation of inner hole, improves the connecting strength of tooth holder and drum.

[0035] Referring to Figure 2 And Figure 3 The outside fixed connection of connecting column 7 has locating block 10, and the inside of connecting shell 6 is provided with locating groove 11, and locating block 10 is slidingly connected in the inside of locating groove 11, is prevented connecting column 7 from leaving connecting shell 6 by the cooperation of locating block 10 and locating groove 11. The outside fixed connection of cutting pick 4 has limit ring 12, and the inside of tooth holder body 2 is provided with limit slot 13, and limit ring 12 is slidingly connected in the inside of limit slot 13, and the movement track of cutting pick 4 is limited by the cooperation of limit ring 12 and limit slot 13.

[0036] Embodiment two:

[0037] Referring to Figure 4 Different from the above embodiment, the utility model further provides an embodiment, and reinforcing component 5 includes buffer layer 502, and buffer layer 502 is high manganese steel material, and buffer layer 502 is arranged at the inside of tooth holder body 2, provides good impact resistance and energy absorption capacity, can reduce the damage of cutting pick 4 impact force to tooth holder body 2, reduces crack propagation.

[0038] Embodiment three:

[0039] Referring to Figure 4Unlike the above-mentioned embodiments, the utility model provides an embodiment, the reinforcing component 5 includes the wear -resisting layer 503, the wear -resisting layer 503 is chromium molybdenum alloy steel material, the wear -resisting layer 503 is arranged in the inside of tooth seat body 2, enhances the impact resistance and the wear resistance of tooth seat body 2 inside, bears main cutting load and friction loss.

[0040] Embodiment four:

[0041] With reference to Figure 4 Unlike the above-mentioned embodiments, the utility model provides an embodiment, the reinforcing component 5 includes the support layer 501, the buffer layer 502 and the wear -resisting layer 503, the support layer 501 is high chromium cast iron material, the buffer layer 502 is high manganese steel material, the wear -resisting layer 503 is chromium molybdenum alloy steel material, the support layer 501 is arranged in the inside of tooth seat body 2, the buffer layer 502 is arranged in the inside of support layer 501, the wear -resisting layer 503 is arranged in the inside of buffer layer 502, through the cooperation of support layer 501, buffer layer 502 and wear -resisting layer 503, effectively promote the wear resistance of tooth seat, the impact resistance and the service life, reduce the downtime maintenance time, improve the operation efficiency of coal winning machine.

[0042] Working principle: when the drum breaks the coal seam, the pick 4 in the tooth seat body 2 is stressed, and the pick 4 is contacted to the buffer plate 8 by moving inward, under the cooperation of connecting column 7 and buffer spring 9, the pressure on buffer plate 8 is relieved, the hard collision between pick 4 and tooth seat body 2 is reduced, and the service life of tooth seat body 2 and pick 4 is prolonged.

[0043] The support layer 501 of high chromium cast iron material can ensure the stability and rigidity of the overall structure of the tooth seat, bear the overall stress, prevent the deformation of the inner hole, improve the connection strength of the tooth seat and the drum, the buffer layer 502 of high manganese steel material provides good impact resistance and energy absorption capacity, can reduce the damage of the impact force of the pick 4 to the tooth seat body 2, reduce crack propagation, the wear -resisting layer 503 of chromium molybdenum alloy steel material enhances the impact resistance and the wear resistance of tooth seat body 2 inside, bears main cutting load and friction loss, through the cooperation of support layer 501, buffer layer 502 and wear -resisting layer 503, effectively promote the wear resistance of tooth seat, the impact resistance and the service life, reduce the downtime maintenance time, improve the operation efficiency of coal winning machine.

[0044] Finally, it should be noted that: the above only for preferred embodiment of the utility model has been described in detail with reference to the foregoing embodiments, for the person skilled in the art, it still can be modified to the technical scheme recorded in the foregoing each embodiment, or equivalent replacement to part of technical features, any modification, equivalent replacement, improvement etc. made within the spirit and principles of the utility model, should be included in the protection scope of the utility model.

Claims

1. An improved tooth holder of a shearer cutting drum, comprising a drum body (1), characterized in that: The outer side of the roller body (1) is fixedly connected with a tooth seat body (2), the inside of the tooth seat body (2) is provided with a buffer assembly (3), the inside of the tooth seat body (2) is slidably connected with a cutting tooth (4), and the inside of the tooth seat body (2) is provided with a reinforcing assembly (5); The buffer assembly (3) comprises a connecting shell (6) fixedly connected to the inside of the tooth seat body (2), a connecting column (7) slidably connected to the inside of the connecting shell (6), and a buffer plate (8) fixedly connected to the front side of the connecting column (7) and slidably connected to the inside of the tooth seat body (2).

2. The tooth holder for improving the EKF shearer cutting drum according to claim 1, characterized in that: The inside of the connecting shell (6) is provided with a buffer spring (9) arranged between the connecting column (7) and the connecting shell (6).

3. The tooth holder for improving the EKF shearer cutting drum according to claim 1, characterized in that: The reinforcing assembly (5) comprises a support layer (501) made of high-chromium cast iron material, which is arranged on the inside of the tooth seat body (2).

4. The tooth holder for improving the EKF shearer cutting drum according to claim 1, characterized in that: The reinforcing assembly (5) comprises a buffer layer (502) made of high-manganese steel material, which is arranged on the inside of the tooth seat body (2).

5. The tooth holder for improving the EKF shearer cutting drum according to claim 1, characterized in that: The reinforcing assembly (5) comprises a wear-resistant layer (503) made of chromium-molybdenum alloy steel material, which is arranged on the inside of the tooth seat body (2).

6. The tooth holder for improving the EKF shearer cutting drum according to claim 1, characterized in that: The reinforcing assembly (5) comprises a support layer (501), a buffer layer (502) and a wear-resistant layer (503), wherein the support layer (501) is made of high-chromium cast iron material, the buffer layer (502) is made of high-manganese steel material, and the wear-resistant layer (503) is made of chromium-molybdenum alloy steel material, the support layer (501) is arranged on the inside of the tooth seat body (2), the buffer layer (502) is arranged on the inside of the support layer (501), and the wear-resistant layer (503) is arranged on the inside of the buffer layer (502).

7. The tooth holder for improving the EKF shearer cutting drum according to claim 1, characterized in that: The outside of the connecting column (7) is fixedly connected with a positioning block (10), the inside of the connecting shell (6) is provided with a positioning groove (11), and the positioning block (10) is slidably connected to the inside of the positioning groove (11).

8. The tooth holder for improving the EKF shearer cutting drum according to claim 1, characterized in that: The outside of the cutting tooth (4) is fixedly connected with a limiting ring (12), the inside of the tooth seat body (2) is provided with a limiting groove (13), and the limiting ring (12) is slidably connected to the inside of the limiting groove (13).

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