Cutting pick anti-breaking device of coal mining machine

Abstract

The utility model discloses a coal mining machine cutting pick anti-breaking device, and particularly relates to the technical field of coal mining equipment, the coal mining machine cutting pick anti-breaking device comprises a pick holder mechanism and an anti-vibration assembly, the anti-vibration assembly is arranged above the inner wall of the pick holder mechanism, and the pick holder mechanism comprises a limiting assembly, a sliding assembly and an anti-vibration rubber pad. A sliding assembly is placed above the limiting assembly, a shockproof rubber pad is installed on the side face of the sliding assembly, and the shockproof assembly serves as a compensation element, so that when the cutting pick is impacted, a good buffering effect can be achieved, for example, when the cutting pick encounters a hard interlayer in coal rock, the cutting pick can be prevented from falling off. The anti-vibration assembly can absorb impact energy generated when the cutting teeth and coal rock collide according to deformation of the damper of the anti-vibration assembly, and therefore impact force transmitted to the cutting teeth and the cutting part of the coal mining machine is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of coal mine equipment more specifically, the utility model relates to coal winning machine picks anti -break device. BACKGROUND

[0002] In the coal mining industry, the coal winning machine is the key equipment to realize efficient mechanized coal mining, and the picks as the part directly contacting with coal and rock of the coal winning machine, its working state directly affects the working efficiency and reliability of the coal winning machine, with the continuous development of coal mining technology, the cutting speed and cutting power of the coal winning machine are continuously improved, and the load borne by the picks is also getting bigger and bigger, making the problem of breakage increasingly prominent, the traditional pick fixing mode is difficult to effectively prevent the falling and breaking of the picks under the condition of high strength work, in order to solve the problem, the coal winning machine pick anti -break device emerges as the times require,

[0003] Through the search, the existing publication number CN222576659U: the coal winning machine pick anti -break device is disclosed, including cutter head, the cutter head outer wall is fixedly connected with the mounting seat, the mounting seat inside is slidably connected with the mounting block, the mounting block top is fixedly connected with the tooth cover, the tooth cover outer wall is provided with the shock pad, the tooth cover inside is fixedly connected with the tooth cutter, the mounting seat inside is slidably connected with the clamping block two, the mounting seat inside is slidably connected with the clamping block one, the clamping block one and the clamping block two are all slidably connected on the mounting block outer wall, the clamping block one and the clamping block two are internally threadedly connected with the bidirectional screw rod. In the utility model, the mounting block is clamped and fixed by the clamping block, the spring and the shock pad buffer the picks, the effect of effectively preventing the picks from falling is realized, the problem that the picks will vibrate when contacting coal and will cause the picks to fall off when working under high load is solved, and the stability of the picks is improved. The inventor found the following problems in the prior art in the process of realizing the utility model:

[0004] The traditional picks rely on simple bolts or clamping grooves for fixing, but such fixing mode is prone to loosening under the high load cutting work of the coal winning machine due to frequent bearing of great impact force, causing the picks to fall off, and once the picks fall off, not only the cutting efficiency of the coal winning machine will be greatly reduced, but also the fallen picks will mix into the coal flow and cause damage to the subsequent transportation, screening and other link equipment, and a series of chain faults will be caused.

[0005] Therefore, the coal winning machine pick anti -break device is proposed for the above problems. UTILITY MODEL CONTENTS

[0006] In order to overcome the above-mentioned defects of the prior art, the utility model provides a coal winning machine pick anti -break device to solve the problems in the above background art.

[0007] To achieve the above object, the utility model provides the following technical scheme: coal -winning machine picks anti -break device, including tooth seat mechanism and shockproof subassembly, the inner wall of tooth seat mechanism top is installed with shockproof subassembly, and tooth seat mechanism contains limiting component, sliding assembly and shockproof rubber pad, and the top of limiting component is placed with sliding assembly, and the side surface of sliding assembly is installed with shockproof rubber pad.

[0008] Preferably, the limiting component includes a limiting bolt, a limiting half ring, a connecting column and a limiting piece, the side surface of the limiting bolt is placed with the limiting half ring, the top of the limiting half ring is installed with the connecting column, and the top of the connecting column is installed with the limiting piece.

[0009] Preferably, the sliding assembly includes a placing slot column, a sliding slot block and a closing plate, the top of the placing slot column is installed with the sliding slot block, and the top of the sliding slot block is installed with the closing plate.

[0010] Preferably, the limiting half ring includes a half ring body, an anti-loosening gasket and a limiting ring, the side surface of the half ring body is installed with the limiting ring, and the side, away from the limiting ring, of the half ring body is installed with the anti-loosening gasket.

[0011] Preferably, the shockproof subassembly includes a damper, a return spring and a mounting base, the outer diameter surface of the damper is placed with the return spring, and the bottom of the damper is installed with the mounting base.

[0012] Preferably, the outer wall of the placing slot column is drilled with a threaded interface, and the top of the placing slot column is bonded with a sealing rubber strip.

[0013] The utility model discloses the technical effect and advantage:

[0014] 1, compared with the prior art, the coal -winning machine picks anti -break device through shockproof subassembly as compensation element, can play good buffering effect when pick is impacted, such as when hard interlayer in coal and rock is encountered, shockproof subassembly can absorb the impact energy produced when pick and coal and rock collide according to the deformation of its own damper, thereby reducing the impact force transmitted to pick and coal -winning machine cutting part.

[0015] 2, compared with the prior art, the coal -winning machine picks anti -break device through closing plate and shockproof rubber pad prevents coal dust produced when pick runs again from entering its inside through the junction of pick anti -break device, and causes damage to the parts in its inside, thereby increasing the service life of pick anti -break device, and shockproof rubber pad can also prevent pick from colliding with the inner wall of pick anti -break device directly due to collision with coal mine, causing the inner wall of pick anti -break device to be damaged, thereby making pick loose in the device. DRAWINGS

[0016] Figure 1 This is a schematic diagram of the overall frontal cross-sectional structure of this utility model.

[0017] Figure 2 This is a top view of the limiting semi-ring plate of this utility model.

[0018] Figure 3 This is a top view of the sliding groove block of this utility model.

[0019] Figure 4 For the present utility model Figure 1 A schematic diagram of the structure at point A.

[0020] The attached diagram is labeled as follows: 1. Gear seat mechanism; 2. Anti-vibration component; 3. Limiting component; 4. Sliding component; 5. Anti-vibration rubber pad; 6. Limiting bolt; 7. Limiting semi-ring plate; 8. Connecting column; 9. Limiting plate; 10. Placement groove column; 11. Sliding groove block; 12. Closing plate; 13. Semi-ring body; 14. Anti-loosening pad; 15. Limiting ring; 16. Damper; 17. Return spring; 18. Mounting base. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Example

[0023] As attached Figures 1 to 4 The coal mining machine cutting tooth anti-breakage device shown includes a tooth base mechanism 1 and a shock-absorbing component 2. The shock-absorbing component 2 is installed on the upper inner wall of the tooth base mechanism 1. The tooth base mechanism 1 includes a limit component 3, a sliding component 4 and a shock-absorbing rubber pad 5. The sliding component 4 is placed on the upper part of the limit component 3, and the shock-absorbing rubber pad 5 is installed on the side of the sliding component 4.

[0024] When the worker installs the cutting tooth, he needs to put the cutting tooth into the sliding assembly 4, and then fix the cutting tooth using the limiting assembly 3. During the movement of the limiting assembly 3, some parts of the limiting assembly 3 are limited in the sliding assembly 4, so that the limiting assembly 3 does not deviate during the movement. The shock-absorbing rubber pad 5 in the tooth seat mechanism 1 can reduce the vibration of the cutting tooth during operation and collision with the tooth seat mechanism 1. When the cutting tooth is used for mining coal, the coal will exert a reaction force on the top end of the cutting tooth, which will cause the cutting tooth body to move towards the bottom of the cutting tooth anti-falling device and press the shock-absorbing assembly 2. The shock-absorbing assembly 2 will deform under the pressure of the cutting tooth body and absorb the stress. When the stress disappears, the shock-absorbing assembly 2 will restore the cutting tooth to its original position.

[0025] Embodiment 2

[0026] Based on the embodiment 1, the scheme in embodiment 1 is further refined based on the specific working mode as follows: Figures 1 to 4 as shown in the following description:

[0027] As a preferred embodiment, the limiting assembly 3 includes a limiting bolt 6, a limiting half-ring piece 7, a connecting column 8, and a limiting piece 9. The side surface of the limiting bolt 6 is provided with the limiting half-ring piece 7. The connecting column 8 is installed on the upper side of the limiting half-ring piece 7 by welding. The limiting piece 9 is installed on the upper side of the connecting column 8 by welding. When the worker needs to fix the cutting tooth in the anti-falling device, he needs to adjust the distance between the two limiting half-rings and the connection of the cutting tooth through the limiting bolt 6. During the movement of the limiting half-ring piece 7, the limiting piece 9 connected by the connecting column 8 and the limiting half-ring moves in the sliding assembly 4 and limits the movement position of the limiting half-ring, so that the movement path is on a horizontal line.

[0028] As a preferred embodiment, the sliding assembly 4 includes a placing slot column 10, a sliding slot block 11, and a closing plate 12. The sliding slot block 11 is installed on the upper side of the placing slot column 10 by welding. The closing plate 12 is installed on the upper side of the sliding slot block 11 by welding. The placing slot column 10 provides a space for the installation of the cutting tooth. The sliding slot block 11 can limit the movement of the limiting assembly 3. The closing plate 12 can form a closed space for the tooth seat mechanism 1 to prevent external dust from entering the internal structure of the tooth seat mechanism 1 and causing damage.

[0029] As a preferred embodiment, the limiting half ring piece 7 comprises a half ring body 13, an anti-loosening washer 14 and a limiting ring 15, the side of the half ring body 13 is provided with the limiting ring 15 by welding, and the side of the half ring body 13 away from the limiting ring 15 is bonded with the anti-loosening washer 14. When the worker moves the half ring body 13 through the limiting assembly 3, the worker will twist the limiting assembly 3, so that the limiting assembly 3 pushes the half ring body 13 to approach the connecting part of the sawtooth, and the limiting ring 15 can limit the limiting bolt 6, so that the deviation of the pushing point of the limiting bolt 6 in the process of pushing the half ring body 13 is prevented, and the position of the half ring body 13 is prevented from being deviated. The anti-loosening washer 14 can prevent loosening at the contact position of the cutting tooth and the limiting half ring piece 7.

[0030] As a preferred embodiment, the shockproof assembly 2 comprises a damper 16, a reset spring 17 and a mounting base 18. The model of the damper 16 is SD-50. The damper 16 utilizes the viscous characteristics of silicon oil to generate a damping force proportional to the speed of motion when the cutting tooth is impacted and vibrated, thereby effectively inhibiting the high-frequency vibration and impact of the cutting tooth, avoiding the cutting tooth from falling off or breaking due to excessive instantaneous impact force, and being able to maintain relatively stable damping performance within different working temperature ranges. The outer diameter surface of the damper 16 is provided with the reset spring 17. The reset spring 17 can quickly return to the original position before placement when the cutting tooth is not subjected to the reaction force of the coal mine. The damper 16 is provided below with the mounting base 18. When the cutting tooth is subjected to the reaction force of the ore during rotation, the cutting tooth will vibrate and press the damper 16 below. The damper 16 can eliminate the vibration of the cutting tooth and absorb the stress transmitted by the cutting tooth. When the cutting tooth stops running, the reset spring 17 will restore the original position of the cutting tooth by elastic force, and the mounting base 18 can provide space for placement of the damper 16 and the reset spring 17.

[0031] As a preferred embodiment, the outer wall of the placement slot column 10 is provided with a threaded interface, and the top of the placement slot column 10 is bonded with a sealing rubber strip. When the cutting tooth anti-falling and breaking device is installed together with the cutting tooth installed inside, the worker needs to threadedly connect the connecting part of the placement slot column 10 and the coal mining machine, and then seal the connecting opening of the placement slot column 10 and the coal mining machine using the sealing rubber strip to prevent coal residue from entering the connecting part between the two during the process of coal mining, thereby preventing damage to the internal parts of the coal mining machine.

[0032] The working process of the utility model is as follows: firstly, when the cutting tooth is installed, it needs to be placed into the placing groove column 10 of the sliding assembly 4, then the cutting tooth is fixed by using the limiting assembly 3, it needs to adjust the distance between the two limiting half rings and the connecting part of the cutting tooth through the limiting bolt 6 first, when the half ring body 13 is moved by the limiting bolt 6, the limiting ring 15 can limit the limiting bolt 6, prevent the deviation of the pushing point of the limiting bolt 6 in the process of pushing the half ring body 13, make the position of the half ring body 13 deviate, and the anti-loose gasket 14 can prevent the loosening of the contact place between the cutting tooth and the limiting half ring piece 7, in the process of moving the limiting half ring piece 7, the limiting piece 9 connected with the limiting half ring through the connecting column 8 can move in the sliding groove block 11 and limit the position of the limiting half ring, make the moving path be on a horizontal line, and the closing plate 12 can make the tooth seat mechanism 1 form a closed space, prevent the dust outside from entering the inside of the tooth seat mechanism 1 and damaging the internal structure, the shockproof rubber pad 5 in the tooth seat mechanism 1 can reduce the vibration of the cutting tooth when it collides with the tooth seat mechanism 1 left and right in the running process, when the cutting tooth is used for mining coal, the cutting tooth will be subjected to the reaction force given by the ore, at this time, the cutting tooth will vibrate and extrude the damper 16 below, the damper 16 can eliminate the vibration of the cutting tooth and absorb the stress conducted by the cutting tooth, when the cutting tooth stops running, the reset spring 17 can restore the original position of the cutting tooth through the elastic force, and the installation base 18 can provide space for the placement of the damper 16 and the reset spring 17, the above is the working principle of the cutting tooth anti-disengagement device of the coal mining machine.

Claims

1. A device for preventing the breakage of a pick of a coal mining machine, comprising a pick seat mechanism (1) and a shockproof assembly (2), characterized in that: The shockproof assembly (2) is installed above the inner wall of the tooth seat mechanism (1), the tooth seat mechanism (1) comprises a limiting assembly (3), a sliding assembly (4) and a shockproof rubber pad (5), the sliding assembly (4) is arranged above the limiting assembly (3), and the shockproof rubber pad (5) is installed on the side of the sliding assembly (4).

2. A pick pull-out prevention device for a coal mining machine according to claim 1, characterized in that: The limiting assembly (3) comprises a limiting bolt (6), a limiting half ring piece (7), a connecting column (8) and a limiting piece (9), the limiting half ring piece (7) is arranged on the side of the limiting bolt (6), the connecting column (8) is installed above the limiting half ring piece (7), and the limiting piece (9) is installed above the connecting column (8).

3. A pick pull-out prevention device for a coal mining machine according to claim 2, characterized in that: The sliding assembly (4) comprises a placing groove column (10), a sliding groove block (11) and a closing plate (12), the sliding groove block (11) is installed above the placing groove column (10), and the closing plate (12) is installed above the sliding groove block (11).

4. The pick puller device of claim 2, wherein: The limiting half ring piece (7) comprises a half ring body (13), an anti-loosening gasket (14) and a limiting ring (15), the limiting ring (15) is installed on the side of the half ring body (13), and the anti-loosening gasket (14) is installed on the side, away from the limiting ring (15), of the half ring body (13).

5. A pick pull-off prevention device for a coal mining machine according to claim 4, characterized in that: The shockproof assembly (2) comprises a damper (16), a reset spring (17) and a mounting base (18), the reset spring (17) is arranged on the outer diameter surface of the damper (16), and the mounting base (18) is installed below the damper (16).

6. The pick puller device of claim 3, wherein: The outer wall of the placing groove column (10) is tapped with a threaded interface, and the top of the placing groove column (10) is bonded with a sealing rubber strip.

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