Bottom-breaking roller shovel plate and bottom-breaking coal remover

Abstract

The utility model provides a bottom breaking roller shovel plate and a bottom breaking coal cleaning machine, comprising a shovel plate base body, the front end of the shovel plate base body is rotatablely provided with a roller through a roller driving mechanism, the roller is provided with a plurality of crushing cutting teeth, the plurality of crushing cutting teeth are spirally arranged on the peripheral surface of the roller, and the bottom breaking roller shovel plate comprises a shovel plate base body. A star wheel is arranged in the cavity of the shovel plate base body and used for collecting materials crushed by the roller into the cavity of the shovel plate base body. According to the bottom-breaking roller shovel plate and the bottom-breaking coal remover, the roller and the breaking cutting teeth can be used for breaking non-back-gouging or protruding parts at the bottom of a roadway, and therefore the purpose of efficient work is achieved. Meanwhile, large coal blocks cannot stably block the shovel plate under the disturbance action of the roller, so that the propelling efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the field of coal mine machinery, in particular to a bottom breaking drum shovel and a bottom breaking coal cleaning machine. Background Art

[0002] A coal shearer is a large, complex system integrating mechanical, electrical, and hydraulic functions. In the tunnel cut created by tunneling, the shearer's cutting section breaks coal from the coal mass. This is then loaded into the shearer's loading section via a loading device and then continuously transported out via a belt conveyor. The shearer travels on a front conveyor at a set traction speed, enabling the coal breaking and loading processes to proceed continuously. However, floor heave can occur within the tunnel, hindering movement. Floor heave is a common pressure phenomenon in soft-rock tunnels in coal mines. When floor heave occurs, the height between the tunnel roof and floor decreases to varying degrees, hindering normal transportation, pedestrian access, and ventilation. Severe floor heave can affect the overall stability of the tunnel's surrounding rock, posing a significant threat to the safe and efficient mining of deep mines and directly impacting the smooth operation of coal mine safety production. Existing solutions to floor heave primarily rely on manual crushing using simple tools, then loading the crushed coal rock onto a belt conveyor for cleaning. This is labor-intensive and inefficient. However, due to its structural limitations, ordinary shovels are not capable of cleaning the bass drum.

[0003] Utility model patent number CN219863027U discloses a multifunctional coal cleaning vehicle for coal mines. The vehicle body is equipped with a mechanical excavation arm and a loading device. The loading device is located at the front end of the vehicle body and includes a shovel plate. The shovel plate consists of a base plate and side plates located on one side of the base plate. The side of the base plate without the side plates is the coal unloading side. The base plate is tilted gradually from the side plate to the coal unloading side. A curved coal retaining plate is installed between the side plates and the base plate, close to the vehicle body. The outer portion of the coal unloading side corresponds to the working face scraper conveyor. A star wheel and a star wheel motor are installed on the base plate to drive the star wheel. The star wheel rotation transfers coal from the shovel plate to the adjacent working face scraper conveyor. This multifunctional coal cleaning vehicle for coal mines can travel along the scraper conveyor in the unmined area of ​​the working face, performing the functions of loading, transferring, and unloading coal to clean up loose coal. However, if there are protrusions on the roadway floor or if the excavation process does not involve clearing the root, the shovel plate may become stuck, affecting propulsion efficiency. Utility Model Content

[0004] In order to be able to crush the uncleaned or raised parts at the bottom of the tunnel and avoid large lumps of coal blocking the shovel plate, the technical solution adopted by the utility model is: a bottom-breaking roller shovel plate, including a shovel plate base, the front end of the shovel plate base is rotatably mounted with a roller through a roller driving mechanism, a plurality of crushing picks are provided on the roller, and the plurality of crushing picks are spirally arranged on the outer circumferential surface of the roller, and a star wheel is provided in the cavity of the shovel plate base, and the star wheel is used to collect the material crushed by the roller into the cavity of the shovel plate base.

[0005] Based on the above, in order to facilitate the installation of the crushing pick, a welding spiral line is provided on the outer peripheral surface of the drum, and the crushing pick is installed on the welding spiral line.

[0006] Based on the above, roller mounting shafts are respectively provided at both ends of the roller, and the roller mounting shafts are in rolling engagement with the front end of the shovel base, and one of the roller mounting shafts is transmission-connected to the roller drive mechanism.

[0007] Based on the above, in order to facilitate loading the coal blocks crushed by the crushing picks into the internal cavity of the shovel plate base, the bottom outer peripheral surface of the roller is connected to the front bottom of the shovel plate base.

[0008] Based on the above, an upper baffle is provided on the upper part of the shovel plate base, and the upper end of the star wheel extends out of the upper baffle.

[0009] Based on the above, a shovel mounting shaft for an external crawler walking mechanism is provided at the rear end of the shovel base.

[0010] The utility model also provides a bottom breaking coal cleaning machine, which comprises a crawler traveling mechanism, and the front end of the crawler traveling mechanism is equipped with the above-mentioned bottom breaking drum shovel plate.

[0011] Based on the above, in order to improve the crushing capacity, a hydraulic mechanical arm is further provided at the upper front end of the crawler walking mechanism, and a bucket and a breaker hammer are respectively provided at the front end of the hydraulic mechanical arm.

[0012] The roller is independently driven by a hydraulic motor and a gearbox. The welding helix is ​​an Archimedean helix.

[0013] The present invention offers substantial advantages and advancements over existing technologies. Specifically, the present invention provides a bottom-breaking drum shovel and bottom-breaking coal cleaning machine. By disposing an independently rotating and cutting drum at the front end of the shovel base and providing multiple crushing picks on the drum, the shovel and crushing picks can be used to pre-crush any uncleaned or raised areas at the bottom of the roadway before the shovel is used to collect the loose coal. This allows for efficient operation. Furthermore, the drum's agitation can be utilized to prevent large coal lumps from becoming stuck on the shovel, thereby increasing propulsion efficiency.

[0014] Furthermore, the roller is independently driven by a hydraulic motor and gearbox, and its diameter is rationally controlled, allowing a small-radius roller to generate greater cutting force with less torque, resulting in smoother and more reliable operation. Furthermore, the roller is integrated with the shovel blade, with the main engine pushing the shovel blade for easier movement.

[0015] Furthermore, the crushing pick layout on the drum adopts the Archimedean spiral, the pick spacing is optimized through simulation, and the rotation direction and deflection angle are tested to achieve the maximum work efficiency with the minimum consumption.

[0016] Furthermore, by combining the bottom-breaking roller shovel with a crawler traveling mechanism and installing a bucket and a breaker hammer on the crawler traveling mechanism, the ability to clear obstacles and break the bottom is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the bottom-breaking roller shovel provided by the utility model.

[0018] Figure 2 It is a schematic diagram of the side structure of the bottom-breaking roller shovel provided by the utility model.

[0019] Figure 3 It is a schematic diagram of the overall structure of the bottom breaking coal cleaning machine provided by the utility model.

[0020] In the figure: 1. crawler walking mechanism; 2. shovel base; 3. star wheel; 4. upper baffle; 5. crushing pick; 6. welding spiral; 7. roller; 8. bucket; 9. breaker hammer; 10. hydraulic mechanical arm; 11. shovel mounting shaft; 12. roller mounting shaft. DETAILED DESCRIPTION

[0021] The technical solution of the present utility model is further described in detail below through specific implementation methods.

[0022] Example 1

[0023] This embodiment provides a bottom-breaking roller shovel, such as Figure 1 、 Figure 2 As shown, it includes a shovel base 2, with a roller 7 rotatably mounted on the front end of the shovel base 2 via a roller drive mechanism. The roller 7 is provided with a plurality of crushing picks 5, which are spirally arranged on the outer circumference of the roller 7. A star wheel 3 is provided in the cavity of the shovel base 2, and is used to collect the material crushed by the roller 7 into the cavity of the shovel base 2.

[0024] In this embodiment, to facilitate the installation of the crushing pick 5, a welded spiral 6 is provided on the outer circumference of the drum 7, upon which the crushing pick 5 is mounted. A drum mounting shaft 12 is provided at each end of the drum 7, which rolls in engagement with the front end of the shovel base 2. One of the drum mounting shafts 12 is connected in a transmission manner to the drum drive mechanism. A shovel mounting shaft 11 for externally connecting to a crawler travel mechanism is provided at the rear end of the shovel base 2.

[0025] Example 2

[0026] This embodiment provides a bottom-breaking roller shovel plate. The main difference from Example 1 is that, in this embodiment, in order to facilitate the loading of coal blocks crushed by the crushing picks into the internal cavity of the shovel plate base, the bottom outer peripheral surface of the roller 7 is connected to the front end bottom of the shovel plate base 2.

[0027] Example 3

[0028] This embodiment provides a bottom-breaking roller shovel plate. The main difference from Embodiment 1 is that, in this embodiment, an upper baffle 4 is provided on the upper part of the shovel plate base 2, and the upper end of the star wheel 3 extends out of the upper baffle 4.

[0029] Example 4

[0030] This embodiment provides a bottom breaking coal cleaning machine, such as Figure 3 As shown, it includes a crawler walking mechanism 1, and the front end of the crawler walking mechanism 1 is installed with the bottom-breaking roller shovel provided by Example 1, Example 2 or Example 3.

[0031] In order to improve the crushing capacity, in this embodiment, a hydraulic mechanical arm 10 is further provided at the upper front end of the crawler walking mechanism 1, and a bucket 8 and a breaker hammer 9 are respectively provided at the front end of the hydraulic mechanical arm 10.

[0032] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model and not to limit it; although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the specific implementation methods of the utility model can still be modified or some technical features can be replaced by equivalents; without departing from the spirit of the technical solution of the utility model, they should all be included in the scope of the technical solution for which protection is requested in the utility model.

Claims

1. A bottom-breaking roller shovel, characterized by: It includes a shovel plate base, and a roller is rotatably installed at the front end of the shovel plate base through a roller driving mechanism. A plurality of crushing picks are arranged on the roller, and the plurality of crushing picks are spirally arranged on the outer circumference of the roller. A star wheel is arranged in the cavity of the shovel plate base, and the star wheel is used to collect the material crushed by the roller into the cavity of the shovel plate base.

2. The bottom-breaking drum shovel according to claim 1, characterized in that: A welding spiral is provided on the outer circumferential surface of the drum, and the crushing pick is mounted on the welding spiral.

3. The bottom-breaking drum shovel according to claim 1 or 2, characterized in that: Both ends of the roller are respectively provided with roller mounting shafts, and the roller mounting shafts are in rolling engagement with the front end of the shovel base, and one of the roller mounting shafts is transmission-connected to the roller driving mechanism.

4. The bottom-breaking drum shovel according to claim 1, characterized in that: The outer peripheral surface of the bottom of the roller is connected with the front end bottom of the shovel plate base.

5. The bottom-breaking drum shovel according to claim 1, 2 or 4, characterized in that: An upper baffle is provided on the upper portion of the shovel plate base, and the upper end of the star wheel extends out of the upper baffle.

6. The bottom-breaking drum shovel according to claim 5, characterized in that: The rear end of the shovel base is provided with a shovel mounting shaft for externally connecting to a crawler walking mechanism.

7. A bottom breaking coal cleaning machine, characterized by: It comprises a crawler walking mechanism, the front end of which is mounted with the bottom-breaking roller shovel plate according to any one of claims 1 to 6.

8. The bottom coal cleaning machine according to claim 7, characterized in that: A hydraulic mechanical arm is further provided on the upper front end of the crawler walking mechanism, and a bucket and a breaker hammer are respectively provided on the front end of the hydraulic mechanical arm.

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