Coal mining machine and drum drive structure thereof

Abstract

The utility model provides a kind of coal winning machine drum driving structure, including rocker bracket and the drum of rotation arrangement on rocker bracket, rocker bracket inside is also provided with slewing bearing power transmission device;Slewing bearing power transmission device has the output ring of connecting drum, and the inner gear ring for power connection power driving device. Through slewing bearing power transmission device inside rocker bracket, slewing bearing power transmission device is connected drum by output ring, is connected power driving device by inner gear ring, utilize the annular structure of inner gear ring, can adopt the mode of multiple point position arrangement driving device to inner gear ring Power output, provide the space of driving device arrangement, simultaneously, by the setting of flexible driving device, multiple driving devices can be set to common power output according to work requirement, effectively solve the problem of insufficient power of existing single driving mode. The utility model further provides a kind of coal winning machine.

Description

Technical Field

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

[0002] In current coal mining operations, the performance of coal mining machines plays a crucial role in coal extraction efficiency. The existing power transmission structure used in coal mining machine drums employs an electric motor as the power source, which is then transmitted via a gear reducer to drive the drum. However, this existing power transmission structure suffers from continuous energy loss during the conversion between the electric motor and the gear reducer, resulting in low overall transmission efficiency and presenting significant drawbacks.

[0003] Coal mining environments are complex, and the mining process often faces challenges such as uneven coal seam hardness and variable geological conditions. This necessitates that the coal mining machine drum possesses a strong torque output capability. However, existing power transmission structures are limited by efficiency and cannot provide greater torque to the drum. Consequently, when dealing with hard coal seams, the coal mining machine exhibits low cutting efficiency and slow mining progress, severely impacting the overall efficiency of coal production and hindering further development and breakthroughs in coal mining technology.

[0004] Therefore, how to improve the mining efficiency of coal mining machines is a problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0005] In view of this, the present invention provides a coal mining machine and its drum drive structure to improve the mining efficiency of the coal mining machine.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A coal mining machine drum drive structure includes a rocker arm frame and a drum rotatably arranged on the rocker arm frame, and a slewing bearing power transmission device is also provided inside the rocker arm frame;

[0008] The slewing bearing power transmission device has an output ring connected to the roller and an internal gear ring for power connection to the power drive device.

[0009] Preferably, in the above-mentioned coal mining machine drum drive structure, the rocker arm frame has a rocker arm support cylinder extending along a first direction, and the drum has a rotating cylinder rotatably fitted on the rocker arm support cylinder; the slewing bearing power transmission device has a slewing bearing coaxially arranged inside the rocker arm support cylinder.

[0010] Preferably, in the above-mentioned coal mining machine drum drive structure, the slewing bearing power transmission device has a gearbox arranged in the rocker arm support cylinder, and the gearbox contains a slewing bearing for power transmission.

[0011] Preferably, in the above-mentioned coal mining machine drum drive structure, the power drive device includes multiple drive power sources arranged circumferentially along the internal gear ring and engaged with the internal gear ring gear transmission.

[0012] Preferably, in the above-mentioned coal mining machine drum drive structure, the drive power source includes a drive motor, a fuel engine, or a hydraulic motor.

[0013] Preferably, in the above-mentioned coal mining machine drum drive structure, the drive power source also has a deceleration device for reducing the output of power.

[0014] Preferably, in the above-mentioned coal mining machine drum drive structure, a sealing structure for sealing the interior of the gearbox is further provided between the rocker arm support cylinder and the rotating cylinder.

[0015] Preferably, in the above-mentioned coal mining machine drum drive structure, the sealing structure includes a first sealing ring arranged between the support cylinder and the output ring, and a second sealing ring arranged between the output ring and the inner ring connecting the inner gear ring.

[0016] Preferably, in the above-mentioned coal mining machine drum drive structure, both the first sealing ring and the second sealing ring are skeleton oil seal sealing rings.

[0017] Preferably, in the above-mentioned coal mining machine drum drive structure, the gearbox is installed on the inner ring of the rocker arm support cylinder for mounting the slewing bearing.

[0018] Preferably, in the above-mentioned coal mining machine drum drive structure, the internal gear ring of the slewing bearing is coaxially connected to the output ring, and the output ring and the internal gear ring are axially connected as one unit by a screw.

[0019] Preferably, in the above-mentioned coal mining machine drum drive structure, the gearbox serves as the outer ring of the slewing bearing, or an independent slewing bearing outer ring is provided and connected to the gearbox as a whole.

[0020] A coal mining machine includes a coal mining drum for coal mining operations, the coal mining drum having a coal mining drum drive structure as described in any of the preceding claims.

[0021] The coal mining machine drum drive structure provided by this utility model includes a rocker arm and a drum rotatably arranged on the rocker arm. A slewing bearing power transmission device is also installed inside the rocker arm. The slewing bearing power transmission device has an output ring connecting to the drum and an internal gear ring for power connection to the power drive device. The coal mining machine drum is mounted on the rocker arm, and the rotational power is transmitted to the drum through the slewing bearing power transmission device inside the rocker arm. The slewing bearing power transmission device connects to the drum through the output ring and to the power drive device through the internal gear ring. Utilizing the annular structure of the internal gear ring, power can be output by arranging multiple drive devices at multiple points on the internal gear ring, providing space for drive device arrangement. Furthermore, through the flexible arrangement of drive devices, multiple drive devices can be set up to output power together according to work requirements, effectively solving the problem of insufficient power in existing single-drive methods. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 A schematic diagram of the first direction of the coal mining machine drum drive structure provided in this application;

[0024] Figure 2 A schematic diagram of the second direction of the coal mining machine drum drive structure provided in this application;

[0025] Figure 3 for Figure 1 Cross-sectional view of the drum drive structure of a coal mining machine;

[0026] Figure 4 for Figure 3 A partial enlarged view of the mid-section view. Detailed Implementation

[0027] This utility model discloses a coal mining machine and its drum drive structure, which improves the mining efficiency of the coal mining machine.

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. 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 skilled in the art without creative effort are within the protection scope of the present utility model.

[0029] like Figures 1-4 As shown, Figure 1 A schematic diagram of the first direction of the coal mining machine drum drive structure provided in this application; Figure 2 A schematic diagram of the second direction of the coal mining machine drum drive structure provided in this application; Figure 3 for Figure 1 Cross-sectional view of the drum drive structure of a coal mining machine; Figure 4 for Figure 3 A partial enlarged view of the mid-section view.

[0030] This application provides a coal mining machine drum drive structure, including a rocker arm 2 and a drum 1 rotatably arranged on the rocker arm 2. The rocker arm 2 also houses a slewing bearing power transmission device. The slewing bearing power transmission device has an output ring 8 connecting to the drum 1 and an internal gear ring 6 for power connection to a power drive device. The drum 1 of the coal mining machine is mounted on the rocker arm 2, and the rotational power is transmitted to the drum 1 through the slewing bearing power transmission device inside the rocker arm 2. The slewing bearing power transmission device connects to the drum 1 via the output ring 8 and to the power drive device via the internal gear ring 6. Utilizing the annular structure of the internal gear ring 6, power can be output by arranging multiple drive devices 3 at multiple points on the internal gear ring 6, providing space for drive device arrangement. Furthermore, through flexible drive device configuration, multiple drive devices can be set up to jointly output power according to work requirements, effectively solving the problem of insufficient power in existing single-drive methods.

[0031] In a specific embodiment of this case, the rocker arm 2 has a rocker arm support cylinder 21 extending along a first direction, and the drum 1 has a rotating cylinder 11 rotatably mounted on the rocker arm support cylinder 21; the slewing bearing 7 is coaxially arranged inside the rocker arm support cylinder 21. The rocker arm 2 is fitted with the coal mining machine drum 1 through the rocker arm support cylinder 21. The slewing bearing 7 is arranged using the cylindrical structure of the rocker arm support cylinder 21. The drive device 3 is connected by the internal gear ring 6 of the slewing bearing 7, and the output ring 8 is connected to the coal mining machine drum 1 through the shaft end of the internal gear ring 6, thereby realizing the transmission of power.

[0032] In one specific embodiment of this case, the slewing bearing power transmission device has a gearbox 5 arranged inside the rocker arm support cylinder 21, and a slewing bearing 7 for power transmission is arranged inside the gearbox 5. The gearbox 5 is installed on the inner ring of the rocker arm support cylinder 21 for mounting the slewing bearing 7. The internal gear ring 6 of the slewing bearing 7 is coaxially connected to the output ring 8, and the output ring 8 and the internal gear ring 6 are axially connected as one unit by a screw 81. In this embodiment, the gearbox 5 serves as the outer ring of the slewing bearing, or an independent outer ring of the slewing bearing 7 can be provided and connected to the gearbox 5 as one unit.

[0033] In one specific embodiment of this case, the power drive device includes a plurality of drive power sources 3 arranged circumferentially along the internal gear ring 6 and engaged with the internal gear ring 6 in gear transmission.

[0034] Preferably, the driving power source 3 includes a drive motor, a fuel engine, or a hydraulic motor.

[0035] In another specific embodiment of this case, the driving power source 3 also has a reduction device 4 for reducing the output power. Preferably, the reduction device is a gearbox.

[0036] Taking the drive power source 3 as an example, the drive motor is an electric motor, with multiple motors arranged in a ring. Power is transmitted to the internal gear ring 6 via gear transmission, employing a multi-motor collaborative operation mode. The power generated by each motor is reduced in speed and increased in torque by a carefully matched reducer before being directly applied to the drum, driving its rotation. The parallel operation of multiple motors outputs strong and stable power, effectively solving the problem of insufficient power in traditional single-drive methods. This is particularly suitable for scenarios requiring high torque for efficient excavation and conveying operations, such as those involving hard rock or other harsh mining conditions. This direct drive method reduces energy loss in the transmission process, improves energy efficiency, and lowers the risk of failure due to intermediate transmission components. This makes the entire mining equipment more stable and reliable, significantly reducing maintenance costs and providing a solid guarantee for the efficient operation of large-scale open-pit mining operations.

[0037] In one specific embodiment of this case, a sealing structure for sealing the interior of the gearbox is further provided between the rocker arm support cylinder 21 and the rotating cylinder 11. Further, the sealing structure includes a first sealing ring 9 disposed between the support cylinder 21 and the output ring 8, and a second sealing ring 10 disposed between the output ring 8 and the inner ring connecting the internal gear ring 6.

[0038] Furthermore, both the first sealing ring 9 and the second sealing ring 10 are skeleton oil seal rings. In the complex working conditions of large-scale open-pit mining, the sealing performance of the equipment is crucial, directly affecting its stable operation and service life. In this embodiment, the coal mining machine drum achieves high torque drive through multiple electric motors, and its sealing design employs a multi-layer skeleton oil seal system. These seals work closely together, ensuring safety and reliability. The multi-layered oil seal system effectively resists the intrusion of various impurities such as dust, mud, and moisture, ensuring the cleanliness and safety of critical internal components even in harsh working environments. This multi-layered skeleton oil seal system has undergone extensive testing and verification under actual working conditions, demonstrating extremely high reliability. It significantly reduces the probability of equipment failure due to seal failure, decreases maintenance frequency and costs, and provides a solid guarantee for the long-term stable and efficient operation of the equipment.

[0039] Based on the coal mining machine drum drive structure provided in the above embodiments, the present invention also provides a coal mining machine, including a coal mining machine drum for coal mining operations, wherein the coal mining machine drum provided on the coal mining machine has the coal mining machine drum drive structure provided in the above embodiments.

[0040] Since the coal mining machine adopts the coal mining machine drum drive structure of the above embodiment, please refer to the above embodiment for the beneficial effects brought by the coal mining machine drum drive structure.

[0041] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A drum drive structure for a coal mining machine, characterized in that, It includes a rocker arm frame and a roller rotatably arranged on the rocker arm frame, and the rocker arm frame is also provided with a slewing bearing power transmission device; The slewing bearing power transmission device has an output ring connected to the roller and an internal gear ring for power connection to the power drive device.

2. The coal mining machine drum drive structure according to claim 1, characterized in that, The rocker arm frame has a rocker arm support cylinder extending in a first direction, and the roller has a rotating cylinder rotatably mounted on the rocker arm support cylinder; the slewing bearing power transmission device has a slewing bearing coaxially arranged inside the rocker arm support cylinder.

3. The coal mining machine drum drive structure according to claim 2, characterized in that, The slewing bearing power transmission device has a gearbox arranged inside the rocker arm support cylinder, and the slewing bearing for power transmission is arranged inside the gearbox.

4. The coal mining machine drum drive structure according to claim 3, characterized in that, The power drive device includes multiple drive power sources arranged circumferentially along the internal gear ring and engaging with the internal gear ring gear transmission.

5. The coal mining machine drum drive structure according to claim 4, characterized in that, The driving power source includes a drive motor, a fuel engine, or a hydraulic motor.

6. The coal mining machine drum drive structure according to claim 5, characterized in that, The driving power source also has a deceleration device for reducing the output power.

7. The coal mining machine drum drive structure according to any one of claims 3-6, characterized in that, A sealing structure is also provided between the rocker arm support cylinder and the rotating cylinder to seal the interior of the gearbox.

8. The coal mining machine drum drive structure according to claim 7, characterized in that, The sealing structure includes a first sealing ring disposed between the support cylinder and the output ring, and a second sealing ring disposed between the output ring and the inner ring connecting the internal gear ring.

9. The coal mining machine drum drive structure according to claim 8, characterized in that, Both the first sealing ring and the second sealing ring are skeleton oil seal sealing rings.

10. The coal mining machine drum drive structure according to claim 3, characterized in that, The gearbox is installed on the inner ring of the rocker arm support cylinder and is used to install the slewing bearing.

11. The coal mining machine drum drive structure according to claim 10, characterized in that, The internal gear ring of the slewing bearing is coaxially connected to the output ring, and the output ring and the internal gear ring are axially connected as one unit by a screw.

12. The coal mining machine drum drive structure according to claim 11, characterized in that, The gearbox serves as the outer ring of the slewing bearing, or a separate slewing bearing outer ring is connected to the gearbox as a whole.

13. A coal mining machine, comprising a coal mining drum for coal mining operations, characterized in that, The coal mining machine drum has a coal mining machine drum drive structure as described in any one of claims 1-12.

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