Cutting pick throwing-off prevention device of coal mining machine

Abstract

The utility model relates to the technical field of cutting picks of coal mining machines, solves the technical problem that the cutting picks are easy to separate from a pick holder, and in particular relates to a cutting pick throwing-off prevention device of a coal mining machine, which comprises a tooth sleeve seat serving as a supporting foundation, and the inner side of the tooth sleeve seat is connected with the cutting picks in a sliding manner; the tooth sleeve seat and the cutting tooth are provided with an anti-falling assembly for limiting the cutting tooth, the cutting tooth is provided with a limiting removal assembly for releasing the limiting function of the anti-falling assembly, the anti-falling assembly comprises a plurality of springback grooves formed in the inner side of the tooth sleeve seat at equal intervals, and stable sliding grooves are formed in the top ends and the bottom ends of the inner sides of the springback grooves; a one-way limiting block is slidably connected to the inner side of the springback groove. Due to the arrangement of the anti-falling component, the cutting pick can be prevented from being thrown out of the interior of the pick sleeve seat due to rotation in the use process, so that the use safety of the cutting pick is improved, and the service life of a single cutting pick can be prolonged.

Description

Technical Field

[0001] This utility model relates to the technical field of coal mining machine cutting teeth, and in particular to a coal mining machine cutting tooth anti-detachment device. Background Technology

[0002] Coal is one of the most widely used resources in modern society. Coal mining is typically carried out using coal mining machines. The working environment underground in coal mines is harsh. A coal mining machine is a large and complex system integrating mechanical, electrical, and hydraulic components. Coal mining machines are suitable for general medium and small-sized mines with gently dipping thin coal seams. In extremely thin composite coal seams, they are used to create bottom slots in the working face to facilitate coal extraction. If a coal mining machine malfunctions, it can lead to the interruption of the entire mining operation, causing huge economic losses. Currently, during the use of coal mining machines, the cutting teeth are very prone to detaching from the tooth holder during operation, causing the teeth to fall off to the outside of the tooth holder. This affects the normal mining and operation of the coal mining machine, and can even cause mechanical damage and personnel injuries. Utility Model Content

[0003] In view of the shortcomings of the existing technology, this utility model provides a coal mining machine cutting tooth anti-detachment device, which solves the technical problem that the cutting tooth is easy to detach from the tooth holder and achieves the purpose of improving the safety of the cutting tooth.

[0004] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a coal mining machine cutting tooth anti-detachment device, including a tooth sleeve seat as a support base, a cutting tooth slidably connected to the inner side of the tooth sleeve seat, an anti-detachment component for limiting the cutting tooth on the tooth sleeve seat and the cutting tooth, and a limit removal component for releasing the limiting function of the anti-detachment component on the cutting tooth.

[0005] The anti-detachment component includes several spring grooves equidistantly formed on the inner side of the tooth sleeve seat. The top and bottom of the inner side of each spring groove are provided with stabilizing grooves. A one-way limiting block is slidably connected to the inner side of each spring groove. A stabilizing slider is fixedly connected to the top and bottom of each one-way limiting block. Several spring springs are connected between the one-way limiting block and the spring groove. A limiting annular groove is formed in the middle of the outer side of the cutting tooth.

[0006] Preferably, the one-way limiting block has a ramp at the end away from the rebound groove, and the end of the one-way limiting block away from the rebound groove is engaged with the limiting annular groove.

[0007] Preferably, the limiting removal component includes a vertical slide groove formed in the middle of the inside of the cutting tooth, both ends of the vertical slide groove are provided with hidden slide grooves, a connecting slide rod is slidably connected to the inside of the hidden slide groove, a return spring is connected between the connecting slide rod and the adjacent hidden slide groove, a transmission screw is spirally connected to the middle of the bottom end of the cutting tooth, and a turning round plate is fixedly connected to the top end of the transmission screw.

[0008] Preferably, the actuating frustum is slidably connected inside the vertical slide groove, and the two connecting slide rods extend into the vertical slide groove from one end near the actuating frustum.

[0009] Preferably, the ends of the two connecting slide rods furthest from the actuating truncated cone correspond to the ends of the adjacent one-way limiting blocks.

[0010] Preferably, the length of the connecting slide rod extending to the inner side of the vertical slide groove is greater than the length of the unidirectional limiting block extending to the outer side of the spring groove.

[0011] By means of the above technical solution, this utility model provides a device for preventing the cutting teeth of a coal mining machine from slipping off, which has at least the following beneficial effects:

[0012] 1. Due to the anti-detachment component, this utility model can prevent the cutting tooth from being thrown out of the tooth sleeve during use due to rotation, thereby improving the safety of the cutting tooth and increasing the service life of a single cutting tooth.

[0013] 2. Due to the setting of the limiting and removing component, the limiting cutting tooth can be quickly removed from the inside of the tooth sleeve seat. It can be quickly replaced after the cutting tooth is damaged, so as not to affect the normal operation of the coal mining machine. Attached Figure Description

[0014] The accompanying drawings, which are provided to further illustrate this application and form part of this application, illustrate exemplary embodiments of this application and are used to explain this application, but do not constitute an undue limitation of this application.

[0015] In the attached diagram:

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0017] Figure 2 A schematic diagram of the structure of the limiting annular groove of this utility model;

[0018] Figure 3 This is a schematic diagram of the cutting tooth mounting structure of this utility model;

[0019] Figure 4 This utility model Figure 3 A magnified structural diagram at point A;

[0020] Figure 5 This utility model Figure 3 A magnified structural diagram at point B.

[0021] In the diagram: 1. Gear sleeve seat; 2. Cutting tooth;

[0022] 3. Anti-detachment component; 31. Rebound groove; 32. Stabilizing slide groove; 33. One-way limit block; 34. Stabilizing slider; 35. Rebound spring; 36. Limiting annular groove;

[0023] 4. Limit removal component; 41. Vertical slide rail; 42. Hidden slide rail; 43. Connecting slide rod; 44. Return spring; 45. Transmission screw; 46. Actuating round platform. Detailed Implementation

[0024] 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.

[0025] Example 1

[0026] During the operation of a coal mining machine, the cutting teeth are prone to detaching from their holders, causing them to fall off and disrupt normal mining and operation. This can even lead to mechanical damage and personnel injury. Please refer to [link / reference needed]. Figures 1-5 This embodiment provides a device to prevent the cutting teeth from detaching from the base of a coal mining machine, solving the technical problem that the cutting teeth easily detach from the tooth holder. The device includes a tooth sleeve base 1 as a supporting foundation, with a cutting tooth 2 slidably connected to the inner side of the tooth sleeve base 1. An anti-detachment component 3 is provided on the tooth sleeve base 1 and the cutting tooth 2 to limit the cutting tooth 2's movement. A limit removal component 4 is provided on the cutting tooth 2 to release the limiting function of the anti-detachment component 3. The anti-detachment component 3 improves the limiting ability of the cutting tooth 2 on the tooth sleeve base 1, and the limit removal component 4 improves the replacement efficiency of the cutting tooth 2.

[0027] In traditional cutting teeth, the cutting teeth are easily thrown off the coal mining machine drill bit during operation, which not only affects the coal mining operation but also poses a safety hazard to the operators. To solve this problem, an anti-detachment component 3 is proposed. The anti-detachment component 3 includes several spring grooves 31 equidistantly formed inside the tooth sleeve seat 1. The top and bottom of the inner side of the spring grooves 31 are provided with stabilizing grooves 32. A one-way limiting block 33 is slidably connected inside the spring grooves 31. A stabilizing slider 34 is fixedly connected to the top and bottom of the one-way limiting block 33. Several spring springs 35 are connected between the one-way limiting block 33 and the spring grooves 31. A limiting annular groove 36 is formed in the middle of the outer side of the cutting tooth 2. A ramp is formed at the end of the limiting block 33 away from the spring groove 31. The end of the one-way limiting block 33 away from the spring groove 31 is engaged with the limiting annular groove 36.

[0028] After the bottom end of the cutting tooth 2 slides into the tooth sleeve seat 1, the bottom end of the cutting tooth 2 will contact the inclined part of the one-way limiting block 33. As the downward movement continues, it will push the one-way limiting block 33 to slide towards the inside of the spring groove 31 until the one-way limiting block 33 and the limiting annular groove 36 on the cutting tooth 2 are on the same horizontal line. Then, the limiting annular groove 36 will slide out of the spring groove 31 due to the elastic force of the spring spring 35, thereby engaging with the limiting annular groove 36 to achieve limiting.

[0029] Example 2

[0030] Based on Example 1, Example 1 solved the technical problem of the cutting tooth easily detaching from the tooth holder, but the problem of the limiting component affecting the replacement of cutting tooth 2 still exists. Combined with... Figures 1-5 As shown, the specific implementation process is as follows: In order to prevent the anti-detachment component 3 from affecting the replacement of the cutting tooth 2 during use, a limiting removal component 4 is proposed. The limiting removal component 4 includes a vertical slide groove 41 opened in the middle of the inside of the cutting tooth 2. Both ends of the vertical slide groove 41 are provided with hidden slide grooves 42. A connecting slide rod 43 is slidably connected to the inside of the hidden slide groove 42. A return spring 44 is connected between the connecting slide rod 43 and the adjacent hidden slide groove 42. A transmission screw 45 is spirally connected to the middle of the bottom end of the cutting tooth 2. A turning round 46 is fixedly connected to the top of the transmission screw 45. The turning round 46 is slidably connected inside the vertical slide groove 41. The ends of the two connecting slide rods 43 near the turning round 46 extend into the inside of the vertical slide groove 41. The ends of the two connecting slide rods 43 away from the turning round 46 correspond to the ends of the adjacent one-way limiting blocks 33.

[0031] To ensure that the connecting slide bar 43 can fully push the one-way limiting block 33 into the springback groove 31, the length of the connecting slide bar 43 extending into the inner side of the vertical slide groove 41 is greater than the length of the one-way limiting block 33 extending out of the outer side of the springback groove 31.

[0032] If the cutting tooth 2 needs to be replaced during operation, the transmission screw 45 needs to be rotated. At that time, the transmission screw 45 will rotate and push the actuating platform 46 fixedly connected to its top to move. During this period, the two connecting slides 43 that are in contact with the actuating platform 46 will move along its inclined surface as the actuating platform 46 moves upward, thereby pushing the one-way limiting block 33 corresponding to the connecting slide 43 to move until the maximum diameter part of the actuating platform 46 is completely in contact with the connecting slide 43. At that time, the one-way limiting block 33 will completely retract into the spring groove 31, thereby releasing the limiting ability of the anti-detachment component 3.

[0033] It should be noted that, in this document, the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0034] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A device for preventing a coal cutter pick from being thrown off, comprising a pick sleeve seat (1) as a supporting base, characterized in that: The tooth sleeve seat (1) is slidably connected with the cutting tooth (2), the tooth sleeve seat (1) and the cutting tooth (2) are provided with the anti-off assembly (3) for limiting the cutting tooth (2), and the cutting tooth (2) is provided with the limit removing assembly (4) for removing the limiting function of the anti-off assembly (3); The anti-off assembly (3) comprises a plurality of rebound grooves (31) equidistantly formed in the inner side of the tooth sleeve seat (1), the inner side of the rebound groove (31) is provided with a stable sliding groove (32) at the top end and the bottom end, the rebound groove (31) is slidably connected with a one-way limiting block (33), the top end and the bottom end of the one-way limiting block (33) are fixedly connected with a stable sliding block (34), a plurality of rebound springs (35) are connected between the one-way limiting block (33) and the rebound groove (31), and the outer side of the cutting tooth (2) is provided with a limiting annular groove (36).

2. The pick anti-throwing-off device of the coal mining machine according to claim 1, characterized in that: The one-way limiting block (33) is provided with a slope at the end away from the rebound groove (31), and the end of the one-way limiting block (33) away from the rebound groove (31) is embedded with the limiting annular groove (36).

3. The pick anti-throwing-off device of the coal mining machine according to claim 1, characterized in that: The limit removing assembly (4) comprises a vertical sliding groove (41) formed in the middle of the cutting tooth (2), the vertical sliding groove (41) is provided with a hidden sliding groove (42) at both ends, the hidden sliding groove (42) is slidably connected with a connecting sliding rod (43), the connecting sliding rod (43) and the adjacent hidden sliding groove (42) are connected with a reset spring (44), the bottom end of the cutting tooth (2) is spirally connected with a transmission screw (45), and the top end of the transmission screw (45) is fixedly connected with a rotating circular table (46).

4. The pick anti-throwing-off device of the coal mining machine according to claim 3, characterized in that: The rotating circular table (46) is slidably connected in the vertical sliding groove (41), and the two connecting sliding rods (43) extend into the vertical sliding groove (41) at the end close to the rotating circular table (46).

5. The pick anti-throwing-off device of the coal mining machine according to claim 3, characterized in that: The ends of the two connecting sliding rods (43) away from the rotating circular table (46) are respectively corresponding to the ends of the adjacent one-way limiting blocks (33).

6. The pick anti-throwing-off device of the coal mining machine according to claim 3, characterized in that: The length of the connecting sliding rod (43) extending into the vertical sliding groove (41) is greater than the length of the one-way limiting block (33) extending out of the rebound groove (31).

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