A coal extraction device

Abstract

The present application relates to the field of coal loading equipment, especially to a coal material taking device, which comprises a belt conveyor and a loading mechanism, the loading mechanism comprises a middle shaft for connecting the belt conveyor, both ends of the middle shaft are rotationally connected with supports, the supports are slidingly sleeved with sleeves, a bucket is rotationally connected between the sleeves at both ends of the middle shaft, guide plates are fixedly connected to the inner sides of the supports at both ends of the middle shaft, and sprockets for driving the rotation of the supports are sleeved with the supports at the outer sides of the supports at both ends of the middle shaft. The device has multiple buckets, can cyclically and continuously take materials to improve the material taking efficiency, can self-adapt to the ground to shovel materials, can lift the bucket vertically upward after shoveling the materials, can realize the shoveling of the shallow layer of coal materials on the ground or the corner coal materials on the rock wall, can unload the materials backward after the extension of the overhanging length, has a lower requirement for the installed platform, and can be used on a conventional mobile belt conveyor.

Description

Technical Field

[0001] This invention relates to the field of coal loading equipment, and in particular to a coal reclaiming device. Background Technology

[0002] Some small open-pit coal mines use loaders extensively for loading coal during mining and transportation. Loaders can load a large amount of coal into trucks at a time. However, during the coal scooping and unloading process, the loader needs to repeatedly adjust the vehicle's position, and each operation can only load and unload one bucket of coal. Generally, to increase production capacity, more loaders are needed, the working time of the loaders needs to be extended, and more skilled drivers need to be introduced, which will significantly increase equipment and human resource costs. Therefore, there is a need for a miniaturized device that can replace loaders for fast coal loading and unloading. To address the above needs, a coal handling device is proposed. Summary of the Invention

[0003] In view of the high cost of using loaders to increase production capacity in small open-pit coal mines as described above or in the prior art, this invention is proposed.

[0004] Therefore, the object of the present invention is to provide a coal mining device.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a coal reclaiming device, including a belt conveyor and a loading mechanism, wherein the loading mechanism includes a central shaft for connecting the belt conveyor, supports rotatably connected to both ends of the central shaft, and sleeves slidably fitted onto the supports, a bucket rotatably connected between the sleeves at both ends of the central shaft, guide plates fixedly connected to both ends of the central shaft inside the supports, and sprockets for driving the supports to rotate sleeved to both ends of the central shaft outside the supports, and the sprockets being fixedly connected to the supports; the loading mechanism includes a central shaft for connecting the belt conveyor and a loading mechanism. The shaft is fixedly connected to the belt conveyor at both ends. The brackets are arranged in a ring array about the central shaft. Each bracket group consists of two parallel square tubes. A steel plate is fixedly connected between the two ends of the sleeves near the central shaft. A slider is fixedly connected to the steel plate and slides along the contour edge of the guide plate. Limiting rods are symmetrically arranged on both sides of the back of the bucket. The outer side of the limiting rod matches and slides with the steel plate. A short column is arranged on the edge of the guide plate at one end of the belt conveyor, and the inner side of the limiting rod matches and slides with the short column.

[0006] In a preferred embodiment of the coal feeding device of the present invention, the central shaft is located between two guide plates and a support cover is sleeved thereon, and the outer contour of the support cover is similar to the contour of the guide plate, and both ends of the support cover are fixedly connected to the guide plate.

[0007] In a preferred embodiment of the coal feeding device of the present invention, the central shaft is located between the guide plates and is in the shape of a circular tube. The two ends of the central shaft are located outside the guide plates and are in the shape of circular shafts, which are rotatably connected to the sprockets and the support. The two ends of the central shaft are rectangular and connected to the belt conveyor.

[0008] As a preferred embodiment of the coal reclaiming device of the present invention, wherein: the guide plates are provided with grooves along their contour edges on the two sides that are far apart from each other, and the grooves include: a right-angle section for advancing and raising the bucket close to the ground; an arc section for extending the bucket to the unloading area of ​​the belt conveyor; and a straight-edge section for retracting the extended bucket to the initial position.

[0009] In a preferred embodiment of the coal reclaiming device of the present invention, the transition between the straight edge section and the arc section extends to the belt conveyor.

[0010] In a preferred embodiment of the coal reclaiming device of the present invention, the bottom of the right-angled section is horizontally positioned at the bottom of the central shaft, and the vertical portion of the right-angled section is positioned on the side of the central shaft away from the belt conveyor.

[0011] In a preferred embodiment of the coal reclaiming device of the present invention, the end of the horizontal portion of the right-angle segment is connected to the straight segment, and the other end of the right-angle segment is connected to the arc segment.

[0012] In a preferred embodiment of the coal reclaiming device of the present invention, the bucket is provided with slewing supports on both sides, the inner ring of the slewing support is connected to the side wall of the bucket, and the end of the sleeve away from the central axis is annularly sleeved on the outer ring of the slewing support.

[0013] In a preferred embodiment of the coal reclaiming device of the present invention, the steel plate is arranged in a V-shape, and the V-shaped opening of the steel plate faces the bucket.

[0014] In a preferred embodiment of the coal feeding device of the present invention, the short column vertical guide plate sidewall is disposed at the transition between the straight edge section and the arc section, and the short column is disposed at the outer edge of the chute.

[0015] The beneficial effects of the coal mining device of the present invention are as follows: The device has multiple buckets, which can continuously mine materials in a cyclic manner to improve the material mining efficiency. It can also scoop materials by itself close to the ground and lift the buckets vertically upward after scooping materials, so as to scoop shallow coal materials or coal materials in the corners of rock walls. It can also unload materials backward after extending the cantilever length. It has low requirements for the installation platform and can be used by assembling it on a conventional mobile belt conveyor. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the following description of the embodiments will be briefly introduced. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram illustrating a simulation example of a coal reclaiming device.

[0018] Figure 2 This is a schematic diagram showing the working state of the excavator bucket of the coal reclaiming device.

[0019] Figure 3 The difference between coal recovery devices and Figure 2 A schematic diagram of the working state of the excavator bucket.

[0020] Figure 4 This is a schematic diagram of the structure of the coal reclaiming device when the bucket is unloading material and is in the state of waiting to be overturned.

[0021] Figure 5 Coal reclaiming device Figure 4 Top view of the structure.

[0022] Figure 6 This is a structural cross-sectional view of the central axis of the coal reclaiming device. Detailed Implementation

[0023] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0024] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0025] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that is mutually exclusive with other embodiments.

[0026] Example 1, referring to Figures 1-6This is the first embodiment of the present invention, which provides a coal mining device that can continuously mine and load coal by means of multiple buckets 204 working in a cycle. It includes a belt conveyor 100 and a loading mechanism 200. The loading mechanism 200 includes a central shaft 201 for connecting to the belt conveyor 100. Supports 202 are rotatably connected to both ends of the central shaft 201, and sleeves 203 are slidably fitted onto the supports 202. Buckets 204 are rotatably connected between the sleeves 203 at both ends of the central shaft 201. Guide plates 205 are fixedly connected to both ends of the central shaft 201 inside the supports 202. Sprockets 207 for driving the supports 202 to rotate are sleeved on both ends of the central shaft 201 outside the supports 202. 207 is fixedly connected to the bracket 202; both ends of the central shaft 201 are fixedly connected to the belt conveyor 100. The brackets 202 are arranged in a ring array about the central shaft 201. Each bracket 202 is composed of two parallel square tubes. A steel plate 208 is fixedly connected between the sleeves 203 and the end of the sleeves 203 that is close to the central shaft 201. A slider 209 is fixedly connected to the steel plate 208. The slider 209 is slidably connected along the contour edge of the guide plate 205. Limiting rods 210 are symmetrically arranged on both sides of the back of the bucket 204. The outer side of the limiting rod 210 is matched and slidably overlapped with the steel plate 208. A short column 211 is arranged on the edge of the guide plate 205 at one end of the belt conveyor 100. The inner side of the limiting rod 210 is matched and slidably overlapped with the short column 211.

[0027] To further explain the working method and advantages of this device in conjunction with existing technology: Most existing loader models cannot directly load the scooped material into the transport vehicle, so it is necessary to turn the loader around to align with the truck bed, which wastes a lot of time in the process of repeated movement. In addition, there are mining equipment with multi-bucket rotary drilling structures that can be used with conveyor belts for continuous mining. However, the common feature of such rotary drilling equipment is that its buckets can only move along an arc path. It is suitable for coal pile mining in large mines. Due to the arc movement path of its buckets, it is not possible to achieve continuous ground scooping. Therefore, it is difficult to scoop coal at the root of the rock wall or at very shallow depths, and it cannot replace the more flexible loader.

[0028] This invention mainly provides a device with multiple buckets 204 capable of continuous cyclic material extraction (improving material handling efficiency), capable of automatically scooping material close to the ground, vertically lifting the scooped material (capable of scooping shallow surface coal or coal from corners of rock walls), and directly unloading material to the rear (see reference). Figure 1 It can be used by assembling a standard mobile belt conveyor 100 and is not platform-dependent.

[0029] First, this device does not operate independently; it is part of the coal mining equipment and is installed and used based on the existing mobile belt conveyor 100. The device is driven by the power unit on the belt conveyor 100 through the sprocket 207. When installing this device, it is important to note that one of the supports 202 should be moved vertically downwards. At this time, after the bottom of the bucket 204 on the support 202 is kept horizontal, there should be a small gap between the bottom of the bucket 204 and the ground.

[0030] The working process of the device is as follows: Figure 3 Taking bucket 204, marked as A, as an example, at this moment, bucket 204 has just completed unloading and tilting onto belt conveyor 100. By selecting the turning points on both sides of bucket 204, the center of gravity of bucket 204 is slightly forward relative to the turning points, thus placing the front of bucket 204 in a downward tilting posture. This causes the lip of the front of bucket 204, used for shoveling material, to scoop into the coal at a downward angle until the lip of bucket 204 touches the bottom, causing the casing 203 to retract towards the support 202. The bottom of bucket 204 gradually touches the ground and tends to be horizontal. (Reference) Figure 3 Bucket 204, marked as B, continuously scoops material along the ground, allowing coal to enter; Reference Figure 2 The middle is marked as C, Figure 3 The middle is marked as D and Figure 2 The bucket 204, marked E, moves upward after reaching its horizontal stop point. Because the front sides of the bucket 204 are angled, more coal is retained inside, shifting the bucket 204's center of gravity rearward and causing its opening to face upward, preventing coal spillage. When the bucket 204 reaches its upward stop point, it begins to move backward. At this time, the limit rod 210 on the bucket 204 overlaps with the steel plate 208 as the angle of the support 202 changes, causing the bucket 204 to gradually tilt as the support 202 deflects. A small amount of coal spills onto the support cover 206 and slides down into the bucket 204, while the rest is eventually dumped onto the belt conveyor 100 and transported away. (Reference) Figure 4 Bucket 204, marked F, has completed feeding. However, due to its significantly rearward shift in center of gravity, it cannot flip itself by gravity. Therefore, by connecting the limiting rod 210 on the back of bucket 204 to the short column 211, bucket 204 deflects along with the support 202, quickly shifting its center of gravity forward to before its turning point. At this point, under gravity, bucket 204 can flip itself. (Reference) Figure 4 The middle is marked as F and Figure 3 The bucket 204, marked A, gradually slides down with the deflection of the support 202 under the action of gravity, and begins the next cycle.

[0031] The above describes the workflow of bucket 204 in one cycle. The device has three (but not limited to three buckets 204) buckets 204 operating continuously to continuously excavate the required coal. The device also has the following technical details:

[0032] Firstly, the ability of the bucket 204 to scrape material close to the ground like a loader during cyclical movement is a major feature of this device. The key to its realization lies in the cooperation between the guide plate 205 and accessories such as the bracket 202 and the sleeve 203, which enables the guidance and control of the movement direction of the bucket 204. For details, please refer to Embodiment 2.

[0033] Secondly, when the bucket 204 of the device moves cyclically to the belt conveyor 100 behind the equipment, it can extend its overhang length in the direction of the belt conveyor 100, so that as much coal as possible falls onto the belt conveyor 100. Moreover, the angle of the bucket 204 is stable and will not swing during feeding. Please refer to Example 3 for details.

[0034] In summary, the device has multiple buckets 204, which can continuously collect materials in a cyclical manner to improve material handling efficiency. It can also scoop materials by itself while keeping them close to the ground, and after scooping, it can lift the buckets 204 vertically upwards to scoop shallow coal or coal in the corners of rock walls. It can also unload materials backwards after extending its overhang length. It has low requirements for the installation platform and can be used by assembling it on a conventional mobile belt conveyor 100.

[0035] Example 2, refer to Figures 1-3 This is the second embodiment of the present invention. Unlike the previous embodiment, this embodiment provides a movement direction control structure for the bucket 204 of the coal reclaiming device. The bucket 204 is guided to move horizontally and vertically by the chute 205a on the guide plate 205, which can achieve the effect of automatically scooping material close to the ground and cleaning material at the corners of the wall. It includes: the guide plate 205 has chute 205a opened along its contour edge on the two sides that are far apart from each other; the transition between the straight edge section and the arc section 205c extends to the belt conveyor 100; the end of the horizontal part of the right angle section 205b is connected to the straight section 205d, and the other end of the right angle section 205b is connected to the arc section 205c; the two sides of the bucket 204 are provided with slewing supports, and the inner ring of the slewing support is connected to the side wall of the bucket 204; and the end of the sleeve 203 away from the central axis 201 is annularly sleeved on the outer ring of the slewing support.

[0036] Specifically, a support cover 206 is sleeved between two guide plates 205 on the central shaft 201, and the outline of the support cover 206 is similar to that of the guide plate 205. The two ends of the support cover 206 are fixedly connected to the guide plate 205. The central shaft 201 is in the shape of a round tube between the guide plates 205. The two ends of the central shaft 201 are in the shape of round shafts on the outside of the guide plate 205 and are rotatably sleeved with the sprocket 207 and the bracket 202. The two ends of the central shaft 201 are rectangular and connected to the belt conveyor 100.

[0037] The guide plate 205 of the device is connected to the support cover 206 to form a closed shell structure, which significantly enhances the structural strength. During the cycle of the bucket 204, it supports the movement of the sleeve 203 and the bucket 204 through the slide 205a and the slider 209. The slide 205a is a closed sliding path formed by the arc segment 205c, the straight edge segment and the right angle segment 205b. The bottom of the right angle segment 205b is horizontally set at the bottom of the central shaft 201, and the vertical part of the right angle segment 205b is set on the side of the central shaft 201 away from the belt conveyor 100. It is used to push and raise the bucket 204 close to the ground. The arc segment 205c is used to suspend the bucket 204 to the unloading area of ​​the belt conveyor 100, so that the coal in the bucket 204 falls onto the belt conveyor 100 as much as possible. The straight edge segment is used to lower the suspended bucket 204 back to the initial position for the next cycle.

[0038] The rest of the structure is the same as in Example 1.

[0039] In summary, the device guides the bucket 204 to move horizontally and vertically through the chute 205a on the guide plate 205, effectively achieving the automated ground-hugging material scooping and wall-corner cleaning effects of the bucket 204.

[0040] Example 3, referring to Figures 4-6 This is the third embodiment of the present invention. Unlike the previous embodiment, this embodiment provides an angle control structure for the bucket 204 of the coal receiving device. The bucket 204 is tilted for unloading by sliding the limiting rod 210 on the back of the bucket 204 with the steel plate 208. The bucket 204 is flipped and reset in time by sliding the limiting rod 210 with the short column 211. The structure includes a V-shaped steel plate 208 with the V-shaped opening facing the bucket 204, a short column 211 perpendicular to the side wall of the guide plate 205 at the transition between the straight edge section and the arc section 205c, and the short column 211 located on the outer edge of the chute 205a.

[0041] refer to Figure 2 Bucket 204, marked with D, has a limiting rod 210 that overlaps with steel plate 208 as the angle of support 202 changes. This causes the bucket 204 to gradually tilt as the support 202 deflects, changing its posture from gravity-controlled to tilting gradually until it completes feeding material onto belt conveyor 100. (Reference) Figure 4 The bucket 204 marked with F has completed feeding. However, because the center of gravity of the bucket 204 has shifted significantly backward, it cannot flip over by gravity. Therefore, the short column 211 is connected to the limiting rod 210 on the back of the bucket 204, so that the bucket 204 also deflects as the support 202 deflects. This quickly moves the center of gravity of the bucket 204 forward to before its turning point. At this time, the bucket 204 can flip over by gravity.

[0042] The rest of the structure is the same as in Example 2.

[0043] In summary, this device achieves the purpose of tilting and unloading of the bucket 204 by designing a limiting rod 210 on the back of the bucket 204, and achieves the purpose of timely flipping and resetting of the bucket 204 by slidingly overlapping the limiting rod 210 with the steel plate 208. The device has a simple and reliable structure.

[0044] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A coal reclaiming device, comprising a belt conveyor (100), characterized in that: It also includes a loading mechanism (200), which includes a central shaft (201) for connecting the belt conveyor (100), brackets (202) rotatably connected to both ends of the central shaft (201), and sleeves (203) slidably sleeved on the brackets (202). A bucket (204) is rotatably connected between the sleeves (203) at both ends of the central shaft (201). Guide plates (205) are fixedly connected to both ends of the central shaft (201) inside the brackets (202). Sprockets (207) for driving the brackets (202) to rotate are sleeved on both ends of the central shaft (201) outside the brackets (202), and the sprockets (207) are fixedly connected to the brackets (202). The two ends of the central shaft (201) are fixedly connected to the belt conveyor (100). The brackets (202) are arranged in a ring array about the central shaft (201). Each set of brackets (202) is composed of two parallel square tubes. The sleeve (203) is fixedly connected to a steel plate (208) at one end near the central shaft (201). The steel plate (208) is fixedly connected to a slider (209), and the slider (209) slides along the contour edge of the guide plate (205). The bucket (204) has symmetrical limit rods (210) on both sides of its back, and the outer side of the limit rod (210) is slidably connected to the steel plate (208). The guide plate (205) is provided with a short column (211) at one end of the belt conveyor (100), and the inner side of the limit rod (210) is slidably connected to the short column (211). When the bucket (204) rotates to a position close to the belt conveyor under the drive of the bracket (202), the limit rod (210) overlaps with the steel plate (208) to achieve the tilting unloading of the bucket (204).

2. The coal reclaiming device as described in claim 1, characterized in that: The central shaft (201) is located between two guide plates (205) and a support cover (206) is sleeved thereon. The outer contour of the support cover (206) is similar to the contour of the guide plate (205), and both ends of the support cover (206) are fixedly connected to the guide plate (205).

3. The coal reclaiming device as described in claim 2, characterized in that: The central shaft (201) is located between the guide plates (205) and is in the shape of a round tube. The two ends of the central shaft (201) are located outside the guide plates (205) and are in the shape of round shafts, which are rotatably connected to the sprocket (207) and the bracket (202). The two ends of the central shaft (201) are rectangular and connected to the belt conveyor (100).

4. The coal reclaiming device as described in claim 3, characterized in that: The guide plate (205) has grooves (205a) on its two mutually distant sides along its outline edge, and the grooves (205a) include a right-angle section (205b) for advancing and raising the bucket (204) close to the ground, an arc section (205c) for extending the bucket (204) to the unloading area of ​​the belt conveyor (100), and a straight edge section for retracting the extended bucket (204) to the initial position.

5. The coal reclaiming device as described in claim 4, characterized in that: The transition between the straight edge section and the arc section (205c) extends to the belt conveyor (100).

6. The coal reclaiming device as described in claim 5, characterized in that: The bottom of the right-angle segment (205b) is horizontally positioned at the bottom of the central shaft (201), and the vertical portion of the right-angle segment (205b) is positioned on the side of the central shaft (201) away from the belt conveyor (100).

7. The coal reclaiming device as described in claim 6, characterized in that: The end of the horizontal portion of the right-angle segment (205b) is connected to the straight segment (205d), and the other end of the right-angle segment (205b) is connected to the arc segment (205c).

8. The coal reclaiming device as described in claim 7, characterized in that: The bucket (204) is provided with slewing supports on both sides, and the inner ring of the slewing support is connected to the side wall of the bucket (204), and the end of the sleeve (203) away from the central axis (201) is annularly sleeved to the outer ring of the slewing support.

9. The coal reclaiming device as described in claim 8, characterized in that: The steel plate (208) is V-shaped, and the V-shaped opening of the steel plate (208) faces the bucket (204).

10. The coal reclaiming device as described in claim 9, characterized in that: The short column (211) is located at the transition between the straight edge section and the arc section (205c) on the side wall of the vertical guide plate (205), and the short column (211) is located on the outer edge of the groove (205a).

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