A drum structure and a coal winning machine

Abstract

The utility model provides a kind of drum structure and coal winning machine;Drum structure includes:end head subassembly: rotatably mounted on the coal winning machine rocker arm by drive shaft;Mounting shell: the cutting tooth of end for cutting coal wall, its inside mounting cavity contains end head subassembly partial structure;Driving assembly: connect end head subassembly with mounting shell, drive mounting shell reciprocating motion along axis.Driving assembly promotes mounting shell telescoping, realizes drum vertical tool, need not to move complete machine to complete cutting coal operation, work efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of coal mining machine technology, specifically to a drum structure and a coal mining machine. Background Technology

[0002] In the field of coal mining, the spiral drum of a coal mining machine is a core working mechanism, and its structural design directly affects mining efficiency and cost. Traditional spiral drums for coal mining machines have the following significant drawbacks:

[0003] The existing drum lacks radial vertical cutting capability, which requires the coal mining machine to cut coal two to three times from the end, resulting in low equipment operating efficiency. Frequent movement of the whole machine not only increases energy consumption but also accelerates equipment wear and significantly increases maintenance costs. Furthermore, the existing fixed drum is difficult to dynamically adjust the cutting depth according to the hardness of the coal seam, and is prone to jamming or overload under complex geological conditions. Utility Model Content

[0004] The purpose of this utility model is to overcome the above-mentioned technical deficiencies and provide a drum structure and a coal mining machine to solve the technical problem of high drum operating costs in coal mining machines in related technologies.

[0005] To achieve the above technical objectives, the present invention adopts the following technical solution: providing a roller structure, comprising:

[0006] An end assembly includes a drive shaft that is rotatably disposed;

[0007] The mounting housing has cutting teeth on its periphery and ends; the mounting housing has a mounting cavity; at least a portion of the end assembly is located in the mounting cavity and is movably connected to the mounting housing; the mounting housing is connected to the drive shaft.

[0008] A drive assembly is connected to the end assembly and to the mounting housing; the drive assembly is used to drive the mounting housing to reciprocate relative to the end assembly.

[0009] Furthermore, the mounting housing includes:

[0010] A sleeve, the outside of which is provided with a spiral roller; the spiral roller is provided with cutting teeth;

[0011] An end cap is connected to the end of the sleeve; a coal-breaking end plate is provided on the end cap; the cutting teeth are provided on the coal-breaking end plate; the end cap and the sleeve form the mounting cavity.

[0012] Furthermore, a guide key is provided on the inner wall of the sleeve; the end assembly is slidably connected to the guide key.

[0013] Furthermore, there are multiple guide keys arranged in a circular pattern; and / or, the mounting cavity is a cylindrical structure; the guide keys are parallel to the axis of the mounting cavity.

[0014] Furthermore, there is an installation gap between the end of the end assembly and the end cap; a drive cylinder is disposed within the installation gap; the drive cylinder is disposed on the end assembly; the piston rod of the drive cylinder is connected to the end cap; the drive cylinder pushes the end cap by driving the piston rod.

[0015] Furthermore, the drive shaft includes:

[0016] A fixed component, wherein a drive channel is provided within the fixed component, and a drive pipe is provided within the drive channel, the drive pipe being connected to the drive cylinder body;

[0017] A rotating component is rotatably disposed relative to the fixed component; the rotating component is connected to the sleeve.

[0018] Furthermore, the rotation axis of the rotating component passes through the drive channel.

[0019] Furthermore, there are multiple drive cylinders; the multiple drive cylinders are arranged at intervals; and / or, the end cap is provided with mounting holes for connecting to the piston rod of the drive cylinder.

[0020] Furthermore, the drive shaft includes a connecting flange; the outer edge of the connecting flange is slidably connected to the mounting housing.

[0021] A coal mining machine includes a drum structure, wherein the drum structure is the drum structure described above.

[0022] Beneficial effects:

[0023] The drum structure of this utility model includes: an end assembly: rotatably mounted on the rocker arm of a coal mining machine via a drive shaft; a mounting housing: cutting teeth on its periphery and ends are used to cut the coal wall, and its internal mounting cavity accommodates part of the end assembly structure; and a drive assembly: connecting the end assembly and the mounting housing, driving the mounting housing to reciprocate along the axis. The drive assembly pushes the mounting housing to extend and retract, realizing vertical cutting of the drum, completing the coal cutting operation without moving the entire machine, thus improving work efficiency. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the internal structure of the roller structure used in this embodiment of the utility model;

[0025] Figure 2 This is a schematic diagram of the external structure of the roller structure used in this embodiment of the utility model;

[0026] Figure 3 This is a schematic diagram of the piston rod of the drive cylinder with the roller structure used in this embodiment of the utility model when it is extended;

[0027] Figure 4 This is a schematic diagram of the piston rod of the drive cylinder with the roller structure used in this embodiment of the utility model when it retracts.

[0028] The above figures include the following reference numerals:

[0029] 1. End assembly; 2. Drive shaft; 3. Mounting housing; 4. Cutting teeth; 5. Mounting cavity; 6. Drive assembly; 7. Sleeve; 8. Spiral drum; 9. End cover; 10. Coal crushing end plate; 11. Guide key; 12. Installation clearance; 13. Drive cylinder; 14. Fixed component; 15. Drive pipeline; 16. Rotating component; 18. Connecting flange. Detailed Implementation

[0030] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0031] According to an embodiment of this utility model, a roller structure is provided; please refer to [link / reference]. Figures 1 to 4 The drum structure includes: end assembly 1: rotatably mounted on the rocker arm of the coal mining machine via drive shaft 2; mounting housing 3: cutting teeth 4 on the periphery and end for cutting the coal wall, and the mounting cavity 5 inside it accommodates part of the end assembly 1; drive assembly 6: connecting the end assembly 1 and the mounting housing 3, and driving the mounting housing 3 to reciprocate along the axis.

[0032] With the above configuration, the drive component 6 pushes the mounting housing 3 to extend and retract, enabling the drum to feed vertically. This allows the coal cutting operation to be completed without moving the entire machine, thus improving work efficiency.

[0033] See Figure 1 In this embodiment, the mounting housing 3 of the drum structure includes: a sleeve 7: an externally welded spiral drum 8, on which cutting teeth 4 are installed for crushing and loading coal; and an end cap 9: the end of the sleeve 7 is connected by bolts, and the cutting teeth 4 of the conical blade structure of its coal crushing end plate 10 enhance the crushing force of the coal wall.

[0034] With the above configuration, the conical design of the coal crushing end plate 10 improves the coal wall crushing efficiency, and the spiral drum 8 and the cutting teeth 4 work together to achieve integrated cutting and loading.

[0035] The guide key 11 ensures that the telescopic movement of the mounting housing 3 is free from radial offset, thus reducing vibration.

[0036] Specifically, in some embodiments, four guide keys 11 are provided on the inner wall of the sleeve 7, and the connecting flange 18 of the end assembly 1 slides within the keyway groove. The evenly distributed four guide keys 11 ensure the smooth operation of the roller structure.

[0037] See Figure 1 In this embodiment, the guide slide key 11 of the roller structure is parallel to the axis of the cylindrical mounting cavity 5 and is evenly distributed circumferentially.

[0038] With the above configuration, the multi-key surround layout ensures uniform force distribution, avoids unilateral wear, and extends service life; the cylindrical mounting cavity 5 ensures precise motion trajectory.

[0039] See Figure 1 In this embodiment, an installation gap 12 is provided between the end assembly 1 and the end cover 9 of the roller structure, and a drive cylinder 13 is built in. The cylinder is fixed on the end assembly 1, and the piston rod is connected to the mounting hole of the end cover 9.

[0040] Specifically, in some embodiments, two sets of drive cylinders 13 are built into the installation gap 12. The dual drive cylinders 13 provide symmetrical driving force and large thrust, ensuring stable extension and retraction under heavy load.

[0041] See Figure 1 In this embodiment, the drive shaft 2 of the roller structure is divided into: a fixed component 14 with a built-in drive channel, through which the drive pipe 15 passes and connects to the drive cylinder 13; and a rotating component 16 that rotates relative to the fixed component 14 via a bearing, with an outer flange connecting to the sleeve 7.

[0042] With the above configuration, the drive pipe 15 is integrated inside the fixed component 14, and the drive pipe 15 supplies oil to the drive cylinder 13 to avoid oil pipe entanglement; the rotating component 16 directly transmits torque to the spiral drum 8.

[0043] In some embodiments, the axis of the rotating component 16 coincides with the center of the drive channel.

[0044] By adopting the above settings, the coaxial design eliminates eccentric vibration, ensures smooth rotation, and improves the dynamic balance accuracy of the drum.

[0045] Specifically, there are two drive cylinders 13, symmetrically arranged in the installation gap 12; the mounting hole of the end cover 9 is adapted to the threaded end of the piston rod.

[0046] With the above configuration, the dual-cylinder redundancy design prevents single-point failure; the threaded connection of the mounting holes ensures impact resistance.

[0047] See Figure 1 In this embodiment, the drive shaft 2 is provided with a connecting flange 18 at its end, the outer edge of which slides with the inner wall of the sleeve 7. The connecting flange 18 is made of 35 forged steel. The wear resistance of the 35 forged steel connecting flange 18 is increased by 3 times, and the sliding fit structure shares the radial load of the guide key 11.

[0048] The coal mining machine in this embodiment is equipped with the aforementioned drum structure, and the cutting depth adjustment range is 0.8–1.5m. This enables mining without repeated cutting across the entire working face, increasing the daily output of the fully mechanized mining face by 25%.

[0049] The working process of the coal mining machine in this embodiment is as follows:

[0050] 1. Initial positioning:

[0051] The rocker arm of the coal mining machine drives the entire drum structure to cut into the coal wall. At this time, the drive cylinder 13 is in a retracted state, and the mounting housing 3 retracts to the vicinity of the end assembly 1. The minimum drum cutting depth is 0.8m.

[0052] 2. Vertical feed cutting:

[0053] Oil supply drive: Hydraulic oil is input into the drive cylinder 13 through the drive pipe 15 inside the fixed component 14 of the drive shaft 2;

[0054] Telescopic propulsion: The piston rod of the drive cylinder 13 extends, pushing the end cover 9 and the mounting housing 3 to slide outward along the guide key 11. See [link / reference] Figure 3 In the direction of the arrow, the spiral drum 8 outside the sleeve 7 and the coal breaking end plate 10 of the end cover 9 move forward synchronously;

[0055] Rotary cutting: The rotating component 16 of the drive shaft 2 drives the mounting housing 3 to rotate, the cutting teeth 4 break the coal wall, and at the same time the conical blades of the coal breaking end plate 10 efficiently tear the coal body.

[0056] 3. Maximum travel operation:

[0057] When the drive cylinder 13 is fully extended, the mounting housing 3 reaches a maximum cutting depth of 1.5m, and the blades of the spiral drum 8 transport the crushed coal to the middle of the coal mining machine, completing the coal cutting at the current position.

[0058] 4. Retraction and repositioning

[0059] Hydraulic oil is input in reverse to drive cylinder 13, and piston rod pulls end cover 9 to retract housing 3 along guide key 11; the coal mining machine moves laterally to the next coal cutting position and repeats steps 1-3 for continuous mining.

[0060] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0061] Optionally, specific examples in this embodiment can refer to the examples described in the above embodiments, and will not be repeated here.

[0062] The sequence numbers of the embodiments in this application are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments.

[0063] In the above embodiments of this application, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0064] The above description is only a preferred embodiment of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this application, and these improvements and modifications should also be considered within the scope of protection of this application.

Claims

1. A roller structure, characterized in that, include: The end assembly (1) includes a drive shaft (2) which is rotatably disposed; Mounting housing (3), the mounting housing (3) is provided with cutting teeth (4) on its periphery and end; the mounting housing (3) has a mounting cavity (5); at least part of the end assembly (1) is located in the mounting cavity (5) and is movably connected to the mounting housing (3); the mounting housing (3) is connected to the drive shaft (2); The drive assembly (6) is connected to the end assembly (1) and the mounting housing (3); the drive assembly (6) is used to drive the mounting housing (3) to reciprocate relative to the end assembly (1).

2. The roller structure according to claim 1, characterized in that, The mounting housing (3) includes: A sleeve (7) is provided with a spiral roller (8) on its outside; the spiral roller (8) is provided with the cutting teeth (4). An end cap (9) is connected to the end of the sleeve (7); a coal breaking end plate (10) is provided on the end cap (9); the cutting teeth (4) are provided on the coal breaking end plate (10); the end cap (9) and the sleeve (7) form the mounting cavity (5).

3. The roller structure according to claim 2, characterized in that, The inner wall of the sleeve (7) is provided with a guide slide key (11); the end assembly (1) is slidably connected to the guide slide key (11).

4. The roller structure according to claim 3, characterized in that, There are multiple guide keys (11), and the multiple guide keys (11) are arranged around each other; and / or, the mounting cavity (5) is a cylindrical structure; the guide keys (11) are parallel to the axis of the mounting cavity (5).

5. The roller structure according to claim 3, characterized in that, There is an installation gap (12) between the end of the end assembly (1) and the end cap (9); a drive cylinder (13) is provided in the installation gap (12); the drive cylinder (13) is provided on the end assembly (1); the piston rod of the drive cylinder (13) is connected to the end cap (9); the drive cylinder (13) pushes the end cap (9) by driving the piston rod.

6. The roller structure according to claim 5, characterized in that, The drive shaft (2) includes: A fixed component (14) is provided with a drive channel, and a drive pipe (15) is provided in the drive channel. The drive pipe (15) is connected to the drive cylinder (13). A rotating component (16) is rotatably disposed relative to the fixed component (14); the rotating component (16) is connected to the sleeve (7).

7. The roller structure according to claim 6, characterized in that, The rotation axis of the rotating component (16) passes through the drive channel.

8. The roller structure according to claim 6, characterized in that, There are multiple drive cylinders (13); the multiple drive cylinders (13) are arranged at intervals; and / or, the end cap (9) is provided with mounting holes (17) for connecting to the piston rod of the drive cylinder (13).

9. The roller structure according to claim 1, characterized in that, The drive shaft (2) includes a connecting flange (18); the outer edge of the connecting flange (18) is slidably connected to the mounting housing (3).

10. A coal mining machine, comprising a drum structure, characterized in that, The roller structure is the roller structure according to any one of claims 1 to 9.

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