Coal bunker lower scraper feeding device

Abstract

This application discloses a coal bunker lower scraper feeding device, including a feeding trough and chain links. The bottom of the feeding trough is provided with a concave slide, and the side wall of the feeding trough is provided with a feed inlet. An upper slide and a lower slide are symmetrically arranged on both sides of the feeding trough. The chain links rotate in a closed loop on the upper and lower slides. Scrapers are evenly spaced along the extension direction of the chain links. In the height direction of the feeding trough, the scrapers protrude from the top and bottom of the chain links, respectively. When the chain links move to the lower slide, the scrapers engage with the concave slide and embed into the bottom of the concave slide, thereby conveying material. The coal bunker lower scraper feeding device provided by this application can effectively increase the contact area between the scraper and the material, thereby improving the material conveying efficiency. Simultaneously, it reduces frictional resistance, lowers equipment power consumption and wear, and effectively extends the equipment's service life.

Description

Technical Field

[0001] This utility model relates to the field of coal bunker feeding technology, and in particular to a coal bunker lower scraper feeding device. Background Technology

[0002] With the continuous advancement of coal mining technology and the increasing demand for efficient resource utilization, the material conveying system in the coal mine production process has become a key link in improving production efficiency, reducing energy consumption, and ensuring safety. The scraper conveyor is a type of conveyor that uses scraper chains to traction and transport bulk materials in a trough.

[0003] In the prior art, our company's patent with announcement number CN222743397U proposes a scraper conveyor for coal mines. By setting a fixed frame and a brush roller above the support plate, the rotation of the brush roller facilitates the cleaning of the scraper conveyor belt at the conveyor. At the same time, by setting a moving component, the lead screw rotates, causing the slider to move on the surface of the lead screw, thereby driving the bending rod, the fixed frame and the brush roller to move horizontally. This allows the brush roller to move closer to or away from the conveyor belt, avoiding wear on the brush roller when it is not in use and ensuring that the conveyor belt can be cleaned and used again next time.

[0004] However, during the work process, such as Figure 1 As shown, we found that the bottom of the conveying trough is a flat-bottomed slide. The chain 51 drives the scraper 52 to rotate in a direction within the conveying trough. The top of the scraper 52 is flush with the top of the upper conveyor belt 53 and the bottom of the lower conveyor belt 54. At the same time, the scraper 52 protrudes downward from the bottom of the upper conveyor belt 53 and upward from the top of the lower conveyor belt 54. The material is conveyed through the protruding parts. The smooth bottom of the conveying trough limits the contact area between the scraper 52 and the coal slime in the trough, reducing the conveying efficiency of the coal slime and limiting the production capacity.

[0005] In addition, the chain 51 that drives the scraper to rotate slides and rubs against the slide rail in the conveying trough, resulting in high frictional resistance, high power consumption, and significant wear, which in turn affects the service life of the equipment. Utility Model Content

[0006] This application provides a coal bunker scraper feeding device, which can not only increase the contact area between the scraper and the material, thereby improving the material conveying efficiency, but also reduce frictional resistance, thereby reducing equipment power consumption and wear, and effectively extending the equipment service life.

[0007] This application provides a coal bunker lower scraper feeding device, including a feeding trough and chain links. The bottom of the feeding trough is provided with a concave slide, and the side wall of the feeding trough is provided with a feed inlet. The two sides of the feeding trough are symmetrically provided with an upper slide and a lower slide. The chain links rotate in a closed loop on the upper slide and the lower slide. The chain links are provided with scrapers at equal intervals in the extending direction.

[0008] In the height direction of the feeding trough, the scraper protrudes from the top and bottom of the chain link respectively, and when the chain link moves to the lower slide, the scraper cooperates with the concave slide and is embedded into the bottom of the concave slide, and the material is conveyed by the scraper.

[0009] In one possible implementation, the chain link has a symmetrical structure, including a guide wheel, a connecting pin, an inner chain plate, and an outer chain plate. The outer chain plate is symmetrically sandwiched on the outside of the inner chain plate and has an overlapping portion at its end. The connecting pin rotatably passes through the overlapping portion. The guide wheel is sleeved on the connecting pin and located inside the inner chain plate. The guide wheel rolls in cooperation with the upper slide rail and the lower slide rail. The scraper is vertically connected between the two outer chain plates.

[0010] In one possible implementation, the scraper is vertically connected to a reinforcing rib, and the two ends of the reinforcing rib are respectively vertically connected to the front and rear outer chain plates.

[0011] In one possible implementation, there is one reinforcing rib located at the center of the height direction of the outer chain plate, or there are multiple reinforcing ribs evenly distributed in the height direction of the outer chain plate.

[0012] In one possible implementation, the lower chute is L-shaped and includes a vertically connected support plate and a protective plate. The support plate cooperates with the guide wheel to allow the guide wheel to roll. The protective plate is attached to the side wall of the feeding trough and protrudes from the scraper in the height direction.

[0013] In one possible implementation, the feeding trough has a high-end and a low-end conveying section, with the feed inlet located near the low-end conveying section. The high-end conveying section is equipped with a main drive motor, and the output shaft of the main drive motor is coaxially connected to a drive shaft. The drive shaft is located inside the feeding trough and is fixedly fitted with a drive wheel. The low-end conveying section is fitted with a driven wheel via a driven shaft. The chain link is simultaneously fitted onto the drive wheel and the driven wheel in a transmission engagement manner.

[0014] Beneficial effects: Compared with the prior art, the coal bunker lower scraper feeding device provided in this application can improve the contact area between the scraper and the material by setting a concave slide at the bottom of the feeding trough and having the scraper protrude from the top and bottom of the chain link in the height direction and cooperate with the concave slide, thereby improving the material conveying efficiency.

[0015] These and other objects, features and advantages of this utility model will be fully realized through the following detailed description. Attached Figure Description

[0016] Figure 1 A partial structural diagram of the chain and scraper in the prior art is shown.

[0017] Figure 2 A three-dimensional structural schematic diagram of the coal bunker scraper feeding device of this application is shown.

[0018] Figure 3 A side view of the coal bunker scraper feeding device of this application is shown.

[0019] Figure 4 A partial structural diagram of the chain link and scraper in this application is shown. Detailed Implementation

[0020] The following description is intended to disclose the present invention so that those skilled in the art can implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art. The basic principles of the present invention defined in the following description can be applied to other embodiments, modifications, improvements, equivalents, and other technical solutions that do not depart from the spirit and scope of the present invention.

[0021] Those skilled in the art should understand that, in the disclosure of this specification, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the above terms should not be construed as limitations on this utility model.

[0022] It is understood that the term "a" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element can be one, while in another embodiment, the number of the element can be multiple, and the term "a" should not be understood as a limitation on the number.

[0023] refer to Figures 2 to 4This application provides a coal bunker scraper feeding device, including a feeding trough 10 and chain links 20. The bottom of the feeding trough 10 is provided with a concave slide 101, and the side wall of the feeding trough 10 is provided with a feed inlet 102 for feeding materials into the feeding trough 10. In addition, the two sides of the feeding trough 10 are symmetrically provided with an upper slide 11 and a lower slide 12. The chain links 20 rotate in a closed loop on the upper slide 11 and the lower slide 12. The chain links 20 are provided with scrapers 30 at equal intervals in the extending direction.

[0024] In the height direction of the feeding trough 10, the scraper 30 protrudes from the top and bottom of the chain link 20 respectively (the protrusion height is the same), and when the chain link 20 moves to the lower slide 12, the scraper 30 cooperates with the concave slide 101 and embeds into the bottom of the concave slide 101, conveying materials through the scraper 30. In this way, compared with the conventional flat-bottom slide, by additionally setting the concave slide 101, and the scraper 30 embedding into the concave slide 101 when moving to the lower slide 12, the scraper 30 can be effectively increased. The contact area between the scraper and the material is increased, thereby improving the feeding efficiency. Specifically, the scraper feeding device provided in this application improves the feeding trough 10 by adding a concave slide 101 to the bottom of the feeding trough 10. On the other hand, it also improves the scraper 30, which no longer protrudes from the chain link at only one end, but increases the height of the scraper 30. This allows the scraper 30 to scrape material at the chain link 10, the part above the chain link 10, and the part below the chain link 10 at the same time. Through the simultaneous improvement of the two aspects, the contact area between the scraper 30 and the material can be effectively increased, thereby improving the working efficiency.

[0025] In one embodiment, the chain link 20 has a symmetrical structure, including a guide wheel 21, a connecting pin 22, an inner chain plate 23, and an outer chain plate 24. The outer chain plate 23 is symmetrically sandwiched on the outside of the inner chain plate and has an overlapping portion 231 at its end. The connecting pin 22 rotatably passes through the overlapping portion 231. The guide wheel 21 is sleeved on the connecting pin 22 and located inside the inner chain plate 23. The guide wheel 21 rolls with the upper slide rail 11 and the lower slide rail 12. The scraper 30 is vertically connected between the two outer chain plates 24. The rolling engagement of the guide wheel 21 on the upper slide rail 11 and the lower slide rail 12 replaces the sliding engagement of the chain link and the slide rail in the prior art, which can reduce the frictional resistance during operation, reduce equipment power consumption and wear, and effectively extend the service life of the equipment.

[0026] In one embodiment, the scraper 30 is vertically connected to a reinforcing rib plate 31, and the two ends of the reinforcing rib plate 31 are respectively vertically connected to the front and rear outer chain plates 24, thereby improving the structural strength and scraping stability of the scraper 30 through the reinforcing rib plate 31.

[0027] In one embodiment, there is one reinforcing rib 31, which is located at the center of the outer chain plate 24 in the height direction.

[0028] In another embodiment, there are multiple reinforcing ribs 31, and the multiple reinforcing ribs 31 are evenly distributed in the height direction of the outer chain plate 24.

[0029] In one embodiment, the lower slide 12 is L-shaped and includes a vertically connected support plate 121 and a protective plate 122. The support plate 121 cooperates with the guide wheel 21 to allow the guide wheel 21 to roll. The protective plate 122 is connected to the side wall of the feeding trough 10 in a close-fitting manner and protrudes from the scraper 30 in the height direction, thereby achieving the purpose of protection. During operation, the material contacts the protective plate 122 from the side rather than directly contacting the feeding trough 10, which can reduce the negative impacts such as corrosion caused by the material on the feeding trough 10 and extend the service life of the feeding trough 10.

[0030] In one embodiment, the feeding trough 10 has a high-end and a low-end conveying section. The feed inlet 102 is located near the low-end conveying section. The high-end conveying section is equipped with a main drive motor 41, the output shaft of which is coaxially connected to a drive shaft 42. The drive shaft 42 is located within the feeding trough 10 (the drive shaft 42 engages with the feeding trough 10 via a bearing) and is fixedly fitted with a drive wheel 43. The low-end conveying section is fitted with a driven wheel 44 via a driven shaft (the driven shaft engages with the feeding trough 10 via a bearing). The chain link 20 is simultaneously fitted onto the drive wheel 43 and the driven wheel 44 in a transmission engagement manner, thereby driving the chain link 20 to rotate directionally within the feeding trough 10 through the engagement of the main drive motor 41, drive shaft 42, drive wheel 43, and driven wheel 44.

[0031] Those skilled in the art should understand that the embodiments of the present invention described above and shown in the accompanying drawings are merely examples and do not limit the present invention. The advantages of the present invention have been fully and effectively realized. The functions and structural principles of the present invention have been shown and explained in the embodiments, and any modifications or variations may be made to the implementation of the present invention without departing from the stated principles.

Claims

1. A coal bunker under-scraper feeding device, characterized in that, The device includes a feeding trough and chain links. The bottom of the feeding trough is provided with a concave slide, and the side wall of the feeding trough is provided with a feed inlet. The two sides of the feeding trough are symmetrically provided with an upper slide and a lower slide. The chain links rotate in a closed loop on the upper slide and the lower slide. The chain links are provided with scrapers at equal intervals in the extending direction. In the height direction of the feeding trough, the scraper protrudes from the top and bottom of the chain link respectively, and when the chain link moves to the lower slide, the scraper cooperates with the concave slide and is embedded into the bottom of the concave slide, and the material is conveyed by the scraper.

2. The coal bunker under-scraper feeding device according to claim 1, characterized in that, The chain link has a symmetrical structure, including a guide wheel, a connecting pin, an inner chain plate, and an outer chain plate. The outer chain plate is symmetrically sandwiched on the outside of the inner chain plate and has an overlapping portion at its end. The connecting pin rotatably passes through the overlapping portion. The guide wheel is sleeved on the connecting pin and located inside the inner chain plate. The guide wheel rolls in cooperation with the upper and lower slide rails. The scraper is vertically connected between the two outer chain plates.

3. The coal bunker under-scraper feeding device according to claim 2, characterized in that, The scraper is vertically connected to a reinforcing rib plate, and the two ends of the reinforcing rib plate are respectively vertically connected to the front and rear outer chain plates.

4. The coal bunker under-scraper feeding device according to claim 3, characterized in that, The reinforcing rib is one and located at the center of the height direction of the outer chain plate, or the reinforcing rib is multiple and the multiple reinforcing ribs are evenly distributed in the height direction of the outer chain plate.

5. The coal bunker under-scraper feeding device of claim 2, wherein, The lower slide is L-shaped and includes a vertically connected support plate and a protective plate. The support plate cooperates with the guide wheel to allow the guide wheel to roll. The protective plate is connected to the side wall of the feeding trough in a close-fitting manner and protrudes from the scraper in the height direction.

6. The coal bunker lower scraper feeding device as described in claim 1, characterized in that, The feeding trough has a high-end and a low-end feeding point. The feed inlet is close to the low-end feeding point. The high-end feeding point is equipped with a main drive motor. The output shaft of the main drive motor is coaxially connected to a drive shaft. The drive shaft is located inside the feeding trough and is fixedly fitted with a drive wheel. The low-end feeding point is fitted with a driven wheel through a driven shaft. The chain link is simultaneously fitted on the drive wheel and the driven wheel in a transmission engagement manner.

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