Coal chute with automatic cover control

Abstract

The present application relates to a coal leakage hopper with automatic cover control device, relates to coal mine tool technical field, including coal leakage hopper body, top connecting piece arranged at the top of coal leakage hopper body and upper cover plate arranged at the upper end of coal leakage hopper body, top connecting piece includes vertical plate connected to the top side end of coal leakage hopper body, horizontal plate connected to the upper side end of vertical plate and side plate vertically connected to the two side ends of vertical plate, two side plates protruding from the same side of the side end of coal leakage hopper body are the same group, the end face of the two side plates of the same group is vertically provided with guide groove, the end face of the two vertical plates is horizontally provided with sliding groove smoothly connecting two side guide grooves, the upper cover plate is metal chain plate and is divided into two parts, the two side ends of the upper cover plate are embedded in the sliding groove and block the opening at the top of the coal leakage hopper body, and the two side ends of the upper cover plate are completely slid into the guide groove along the sliding groove and open the opening at the top of the coal leakage hopper body. Its beneficial effect is that workers do not need to climb to the top of the coal leakage hopper to install the cover, which is safer.

Description

Technical Field

[0001] This invention relates to the field of coal mining tools, and in particular to a coal hopper with an automatic cover control device. Background Technology

[0002] In underground coal mining, the coal at the working face needs to be transported using belt conveyors. Since underground belt conveyors are often arranged in a straight line, when passing through mutually perpendicular or intersecting roadways, coal needs to be transferred and unloaded using hoppers between different belt conveyors. For example, the coal on the belt conveyor in the mining area roadway needs to be transferred and unloaded using hoppers onto the belt conveyor in the panel roadway.

[0003] When the belt conveyor is running, the coal flow needs to be transferred to the lower belt conveyor through the coal hopper. When the coal flow is not needed, a cover plate needs to be installed at the bottom or top of the coal hopper to prevent people or objects from falling and to prevent dust from rising due to different wind pressure. In the current actual application in coal mines, it is necessary to manually climb to the top of the coal hopper wearing a safety belt and install the cover plate, which has disadvantages such as high safety risks and untimely installation. Summary of the Invention

[0004] (a) Technical problems to be solved

[0005] In view of the above-mentioned shortcomings and deficiencies of the prior art, the present invention provides a coal hopper with an automatic cover plate control device, which solves the technical problem of unsafety when manually climbing to the top of the coal hopper wearing a safety belt and installing the cover plate.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, the main technical solutions adopted by the present invention include:

[0008] This invention provides a coal hopper with an automatic cover control device, comprising a coal hopper body, a top connector symmetrically arranged on the top of the coal hopper body for connecting to an upper belt conveyor, and an upper cover plate disposed on the upper end of the coal hopper body and for closing or opening the top opening of the coal hopper body during use. The top connector includes a vertical plate vertically connected to the top side of the coal hopper body, a horizontal plate horizontally connected to the upper side of the vertical plate, and a horizontal plate vertically connected to both sides of the vertical plate and protruding from the side of the coal hopper body. The side plates, two of which protrude from the side end of the coal hopper body on the same side, are in the same group. The two side plates in the same group have a guide groove vertically opened along the length direction on the end face of the two side plates that are close to each other. The two end faces of the two side plates have a smooth sliding groove horizontally opened to connect the guide grooves on both sides. The top cover plate is a metal chain plate and is divided into two parts. The two sides of the top cover plate are embedded in the sliding groove and block the opening at the top of the coal hopper body. The two sides of the top cover plate slide completely into the guide groove along the sliding groove and open the opening at the top of the coal hopper body.

[0009] This invention provides a coal hopper with an automatic cover plate control device. When the coal hopper needs to receive coal flow from the upper belt conveyor to the lower belt conveyor, the two ends of the two upper cover plates are completely slidably inserted into the guide groove. At this time, the coal flow can pass smoothly through the coal hopper body. When coal flow is not needed, the two upper cover plates slide upward along the guide groove. Since the upper cover plates are metal chain plates, they bend when passing the connection between the guide groove and the slide groove, and then slide completely into the slide groove until the ends of the two upper cover plates abut. At this time, the upper cover plates completely cover the opening at the top of the coal hopper body, thereby preventing personnel or objects from falling into the coal hopper body. At the same time, it eliminates the need for workers to climb to the top of the coal hopper to install the cover plates, making it safer.

[0010] Optionally, a drive sprocket is rotatably provided at the connection between the vertical plate and the side plate, engaging with the back of the upper cover plate and driving the upper cover plate to move along the slide groove and the guide groove. A motor is provided on the side end of the coal hopper body below the horizontal plate, driving the drive sprocket to rotate via a chain.

[0011] The operation of the upper cover plate is made more convenient by rotating and setting a drive sprocket at the connection between the vertical plate and the side plate to engage with the back of the upper cover plate, and then driving the drive sprocket to rotate through the motor and chain.

[0012] Optionally, a sealing plate is vertically provided on the side end of the two side plates in the same group away from the coal hopper body, and a storage cavity is formed between the sealing plate and the two side plates for the upper cover plate to slide into and be stored.

[0013] By fixing a sealing plate together at the end of the two side plates in the same group away from the coal hopper body, a receiving cavity is formed between the sealing plate and the two side plates in the same group, thereby receiving and protecting part of the top cover plate and reducing damage to the top cover plate during transportation and coal transportation.

[0014] Optionally, the top of the sealing plate is bent in the same direction as the upper cover plate and a sealing piece is rotatably connected to its end via a torsion spring, the sealing piece covering the storage cavity.

[0015] By setting the top of the sealing plate to be curved, the sealing plate fits snugly at the connection between the side plate and the vertical plate, while providing greater protection for the top cover. Combined with the sealing plate connected by a torsion spring, when the top cover is fully retracted into the storage cavity, the sealing plate will cover the top opening of the storage cavity. When the top cover slides out of the storage cavity, it can directly abut against the sealing plate and rotate to open, making it more convenient.

[0016] Optionally, an elastic rubber sheet is fixed to the upper surface of the upper cover plate, and the elastic rubber sheet bends and wraps around the head and tail ends of the upper cover plate in the direction of movement.

[0017] The top cover plate is a metal chain plate, and there are still certain gaps between each chain plate to allow for mutual rotation. This solution fixes a layer of elastic rubber sheet to the upper end of the top cover plate. The elastic rubber sheet will extend as the top cover plate bends, without affecting the sliding of the top cover plate. At the same time, it can block the gaps on the top cover plate to reduce the rise of coal ash dust.

[0018] Optionally, it also includes a lower cover plate disposed at the lower end of the coal hopper body and which closes or opens the bottom opening of the coal hopper body as it is used. The coal hopper body includes a feed end with a large diameter at the top, a discharge end with a small diameter at the bottom, and a narrowing channel connecting the feed end and the discharge end. The discharge end has symmetrical horizontal sliding ports on both parallel sides. The lower cover plate is divided into two parts, each of which is horizontally slidably inserted into the two sliding ports.

[0019] By setting a lower cover plate, the lower cover plate is divided into two parts, so that both parts of the lower cover plate can be horizontally inserted along the sliding insertion ports on both sides of the discharge end, thereby sealing the discharge end opening at the lower end of the coal hopper body, and further improving the sealing work in conjunction with the upper cover plate at the top.

[0020] Optionally, the two parallel side walls of the discharge end are horizontally provided with slides that connect to the interior of the discharge end. Both ends of the two slides are connected to the two sliding ports. Two sliders are horizontally slidably embedded in the two slides. The two sides of the two parts of the lower cover plate are coaxially provided with rotating shafts that are rotatably connected to the sliders. When the lower cover plate rotates to completely disengage from the sliding ports, it rotates to a vertical position and is fixed to the outer surface of the feed end.

[0021] By opening slideways on both sides of the discharge end, the slider is slidably installed in the slideways. The two sides of the lower cover plate are provided with rotating shafts, which are inserted into the slider. Thus, when the slider slides to the two ends of the slideway, the lower cover plate can be rotated to be close to the outer surface of the feed end. When it is necessary to block the opening of the feed end, the lower cover plate can be rotated to a horizontal position, and then the lower cover plate is slid into the sliding port until the two parts of the lower cover plate abut.

[0022] Optionally, multiple magnetic plates are embedded in both ends of the lower cover plate and magnetically fixed to the side of the discharge end.

[0023] By embedding magnetic pieces in both ends of the lower cover plate, the lower cover plate can be directly and magnetically attached to the side of the discharge end, which is more convenient.

[0024] Optionally, both lower cover plates are provided with sealing strips on one side where they slide into the discharge end and abut against each other.

[0025] By installing sealing strips on one side where the two lower cover plates abut against each other, the gap between the two lower cover plates will be sealed when they abut together, thereby reducing the upward flow of coal ash dust.

[0026] Optionally, the sealing strip includes a main strip and a secondary strip. The side end of the main strip is provided with a snap-fit ​​strip with a ball-shaped cross-section along its own length. The secondary strip is provided with a snap-fit ​​groove along its length on the side end near the main strip for the snap-fit ​​strip to be inserted and snapped in. The two halves of the lower cover plate are provided with a handle of the same thickness as themselves on the side end away from the sealing strip. When the lower cover plate is fully inserted into the sliding port, the handle is located outside the sliding port.

[0027] By setting the sealing strip as a main strip and a secondary strip, when the main strip and the secondary strip abut together, the snap-fit ​​strip on the main strip directly inserts into the snap-fit ​​groove of the secondary strip, thereby fixing the two parts of the lower cover plate together. When transporting the coal hopper, the two parts of the lower cover plate will not easily separate. At the same time, a handle is set on the side of the two parts of the lower cover plate away from the sealing strip, so that the thickness of the handle is the same as that of the lower cover plate. On the one hand, it does not affect the magnetic fixation of the lower cover plate to the side of the discharge end, and on the other hand, it is convenient to separate and slide out the two parts of the lower cover plate.

[0028] (III) Beneficial Effects

[0029] The beneficial effects of this invention are as follows: When the coal hopper with the automatic cover plate control device of this invention needs to receive coal flow from the upper belt conveyor to the lower belt conveyor, the two ends of the two upper cover plates are completely slidably inserted into the guide groove. At this time, the coal flow can pass smoothly through the coal hopper body. When coal flow is not needed, the two upper cover plates slide upward along the guide groove. Since the upper cover plate is a metal chain plate, it bends when passing the connection between the guide groove and the slide groove, and then slides completely into the slide groove until the ends of the two upper cover plates abut. At this time, the upper cover plate completely covers the opening at the top of the coal hopper body, thereby preventing personnel or objects from falling into the coal hopper body. At the same time, it eliminates the need for workers to climb to the top of the coal hopper to install the cover plate, making it safer. Attached Figure Description

[0030] Figure 1 This is a three-dimensional schematic diagram of an embodiment of the present invention;

[0031] Figure 2 This is a cross-sectional view of an embodiment of the present invention;

[0032] Figure 3 This is an exploded view diagram of an embodiment of the present invention.

[0033] [Explanation of Labels in the Attached Image]

[0034] 1. Coal hopper body; 11. Feeding end; 12. Narrowing channel; 13. Discharge end; 131. Sliding inlet; 132. Slide rail; 133. Sliding block; 2. Top connector; 21. Vertical plate; 211. Slide groove; 22. Horizontal plate; 23. Side plate; 231. Guide groove; 24. Drive sprocket; 25. Sealing plate; 251. Sealing piece; 26. Storage cavity; 3. Upper cover plate; 31. Elastic rubber sheet; 4. Lower cover plate; 41. Magnetic suction piece; 42. Sealing strip; 421. Main sealing strip; 4211. Snap-fit ​​sealing strip; 422. Secondary sealing strip; 4221. Snap-fit ​​groove; 43. Handle; 5. Remote control motor. Detailed Implementation

[0035] To better explain and facilitate understanding of the present invention, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0036] The coal hopper with an automatic cover plate control device proposed in this embodiment of the invention allows the two ends of the two upper cover plates to slide completely into the guide groove when the coal hopper needs to receive coal flow from the upper belt conveyor to the lower belt conveyor. At this time, the coal flow can pass smoothly through the coal hopper body. When coal flow is not needed, the two upper cover plates slide upward along the guide groove. Since the upper cover plate is a metal chain plate, it bends when passing the connection between the guide groove and the slide groove, and then slides completely into the slide groove until the ends of the two upper cover plates abut. At this time, the upper cover plate completely covers the opening at the top of the coal hopper body, thereby preventing personnel or objects from falling into the coal hopper body. At the same time, it eliminates the need for workers to climb to the top of the coal hopper to install the cover plate, making it safer.

[0037] To better understand the above technical solutions, exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present invention are shown in the drawings, it should be understood that the present invention can be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that the present invention can be understood more clearly and thoroughly, and that the scope of the present invention can be fully conveyed to those skilled in the art.

[0038] Reference Figures 1-3 A coal hopper with an automatic cover control device includes a coal hopper body 1, a top connector 2 symmetrically arranged on the top of the coal hopper body 1 for connecting to an upper belt conveyor, an upper cover 3 arranged on the upper end of the coal hopper body 1 and used to close or open the top opening of the coal hopper body 1, and a lower cover 4 arranged on the lower end of the coal hopper body 1 and used to close or open the bottom opening of the coal hopper body 1.

[0039] The coal hopper body 1 includes a large-diameter feed end 11 at the top, a small-diameter discharge end 13 at the bottom, and a narrowing channel 12 connecting the feed end 11 and the discharge end 13, which are welded together in sequence.

[0040] The top connector 2 includes a vertical plate 21 arranged horizontally and vertically welded to the outer wall of the top of the feed end 11, a horizontal plate 22 welded outwardly to the upper end of the vertical plate 21, and a side plate 23 welded vertically to both ends of the vertical plate 21 and protruding from the side end of the feed end 11. When connected to the external structure through the horizontal plate 22, since the horizontal plate 22, the vertical plate 21 and the side plate 23 are welded into a whole, the top connector 2 has more connection parts with the coal hopper body 1, thus making the connection more solid.

[0041] Two side plates 23 protruding from the side end of the coal hopper body 1 on the same side are in the same group. The two side plates 23 in the same group are vertically provided with guide grooves 231 along the length direction on the end face of the two side plates 23 that are close to each other. The two vertical plates 21 are horizontally provided with sliding grooves 211 that smoothly connect the two guide grooves 231. The upper cover plate 3 is a metal chain plate and is divided into two parts. The two sides of the upper cover plate 3 are embedded in the sliding grooves 211 and block the opening at the top of the coal hopper body 1. The two sides of the upper cover plate 3 slide completely into the guide grooves 231 along the sliding grooves 211 and open the opening at the top of the coal hopper body 1.

[0042] When the coal hopper needs to receive coal flow from the upper belt conveyor to the lower belt conveyor, the two ends of the two upper cover plates 3 are completely slidably inserted into the guide groove 231. At this time, the coal flow can pass smoothly through the coal hopper body 1. When the coal flow is not needed, the two upper cover plates 3 slide upward along the guide groove 231. Since the upper cover plate 3 is a metal chain plate, it bends when passing the connection between the guide groove 231 and the slide 211, and then slides completely into the slide 211 until the ends of the two upper cover plates 3 abut together. At this time, the upper cover plate 3 completely covers the opening at the top of the coal hopper body 1, thereby preventing personnel or objects from falling into the coal hopper body 1.

[0043] Metal chain plates, also known as plate chains, refer to chains formed by the continuous connection of pins and chain plates. They are simple and robust in structure, typically possessing high tensile strength and load-bearing capacity. They are mainly used for traction, lifting, suspension, and balancing applications, and are widely used in logistics, forklifts, machine tools, elevators, and other fields. Their structure is existing technology and will not be elaborated upon here.

[0044] A drive sprocket 24 is rotatably mounted at the connection between the vertical plate 21 and the side plate 23 via a rotating shaft. The drive sprocket 24 consists of two coaxial sprockets of the same diameter, located on opposite sides of the connection between the vertical plate 21 and the side plate 23. The inner sprocket engages with the back of the upper cover plate 3 and drives the upper cover plate 3 to move along the extension direction of the slide groove 211 and the guide groove 231. A remote control motor 5 is bolted to the side end of the coal hopper body 1 below the horizontal plate 22. The remote control motor 5 has a built-in chip and remote control components, and can be started and stopped remotely by manual operation. The control method of the remote control motor 5 is existing technology and will not be described in detail here. A sprocket is keyed to the output shaft of the remote control motor 5. The sprocket is connected to the externally exposed sprocket of the drive sprocket 24 via a chain, thereby driving the drive sprocket 24 to rotate as a whole, and thus controlling the movement of the upper cover plate 3, making the operation more automatic and convenient.

[0045] Two side plates 23 in the same group are vertically fixed to a sealing plate 25 on the side away from the coal hopper body 1 by bolts. The lower part of the sealing plate 25 is bent towards the coal hopper and abuts against the lower end of the side plate 23 and the side end of the feed end 11, so that a receiving cavity 26 is formed between the sealing plate 25 and the two side plates 23 for the upper cover plate 3 to slide into and be received. This allows part of the upper cover plate 3 to be received and protected, reducing damage to the upper cover plate 3 during transportation and coal transportation.

[0046] The top of the sealing plate 25 bends in the same direction as the upper cover plate 3 and is connected to a sealing piece 251 via a torsion spring at its end. The sealing piece 251 covers the storage cavity 26. The top of the sealing plate 25 is bent so that it fits against the connection between the side plate 23 and the vertical plate 21, while providing greater protection for the upper cover plate 3. With the sealing piece 251 connected by the torsion spring, when the upper cover plate 3 is completely stored in the storage cavity 26, the sealing piece 251 will cover the top opening of the storage cavity 26. When the upper cover plate 3 slides out of the storage cavity 26, it can directly abut against the sealing piece 251 and rotate to open, making it more convenient.

[0047] An elastic rubber sheet 31 is bonded and fixed to the upper end surface of the upper cover plate 3. The elastic rubber sheet 31 bends and wraps around the head and tail ends of the upper cover plate 3 in the direction of movement. The upper cover plate 3 is a metal chain plate, and there are still certain gaps between each chain plate to allow mutual rotation. By fixing an elastic rubber sheet 31 to the upper end surface of the upper cover plate 3, the elastic rubber sheet 31 will extend as the upper cover plate 3 bends, without affecting the bending and sliding of the upper cover plate 3. At the same time, it can block the gaps on the upper cover plate 3 to reduce the rise of coal ash dust.

[0048] The discharge end 13 has symmetrical horizontal sliding slots 131 on both sides. The lower cover plate 4 is divided into two parts, each of which is horizontally slidably inserted into the two sliding slots 131. Both parts of the lower cover plate 4 can be horizontally inserted along the sliding slots 131 on both sides of the discharge end 13, thereby sealing the opening of the discharge end 13 at the lower end of the coal hopper body 1, thus further improving the sealing work in conjunction with the upper cover plate 3 at the top.

[0049] The discharge end 13 does not have a sliding insertion port 131, and its two parallel side walls are horizontally provided with slides 132 that connect to the interior of the discharge end 13. Both ends of the two slides 132 are connected to the two sliding insertion ports 131. Two sliders 133 are horizontally slidably embedded in the two slides 132 respectively. The two ends of the two lower cover plates 4 are coaxially provided with a rotating shaft that is rotatably connected to the sliders 133. When the lower cover plate 4 is rotated to completely disengage from the sliding insertion port 131, it rotates to a vertical position and is fixed to the outer surface of the feed end 11. When the sliders 133 slide to the two ends of the slides 132, the lower cover plate 4 can be rotated to be close to and fixed to the outer surface of the feed end 11. When it is necessary to block the opening of the feed end 11, the lower cover plate 4 can be rotated to a horizontal position, and then the lower cover plate 4 is slid into the sliding insertion port 131 until the two lower cover plates 4 abut.

[0050] Multiple magnetic pieces 41 are embedded in the two ends of the lower cover plate 4 and are magnetically fixed to the side of the discharge end 13.

[0051] The two lower cover plates 4 are slidably inserted into the discharge end 13 and abut against each other. One side of each side is provided with a sealing strip 42. The sealing strip 42 includes a main strip 421 and a secondary strip 422. The side of the main strip 421 is provided with a snap-fit ​​strip 4211 with a ball-shaped cross section along its own length. The side of the secondary strip 422 near the main strip 421 is provided with a snap-fit ​​groove 4221 for the snap-fit ​​strip 4211 to be inserted and snapped. The two lower cover plates 4 are integrally provided with a handle 43 of the same thickness as itself on the side away from the sealing strip 42. When the lower cover plate 4 is fully inserted into the sliding port 131, the handle 43 is located outside the sliding port 131. When the main rubber strip 421 and the secondary rubber strip 422 abut together, the snap-fit ​​rubber strip 4211 on the main rubber strip 421 is directly inserted into the snap-fit ​​groove 4221 of the secondary rubber strip 422, thereby fixing the two parts of the lower cover plate 4 together. When transporting the coal hopper, it can reduce the rise of coal ash and dust, and also prevent the two parts of the lower cover plate 4 from easily separating. At the same time, a handle 43 is provided on the side of the two parts of the lower cover plate 4 away from the sealing rubber strip 42, so that the thickness of the handle 43 is the same as that of the lower cover plate 4. On the one hand, it does not affect the magnetic fixation of the lower cover plate 4 to the side of the discharge end 13, and on the other hand, it is convenient to separate and slide out the two parts of the lower cover plate 4.

[0052] In the description of this invention, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0053] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0054] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first and second features are in direct contact, or that they are in indirect contact through an intermediate medium. Furthermore, "above," "over," or "on top" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," or "beneath" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0055] In the description of this specification, the terms "one embodiment," "some embodiments," "embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0056] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make modifications, alterations, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A coal hopper with an automatic cover control device, characterized in that: The device includes a coal hopper body (1), a top connector (2) symmetrically arranged on the top of the coal hopper body (1) for connecting to an upper belt conveyor, and an upper cover plate (3) arranged on the upper end of the coal hopper body (1) and used to close or open the top opening of the coal hopper body (1). The top connector (2) includes a vertical plate (21) vertically connected to the top side of the coal hopper body (1), a horizontal plate (22) horizontally connected to the upper side of the vertical plate (21), and a side plate (23) vertically connected to both sides of the vertical plate (21) and protruding from the side of the coal hopper body (1). The side plate protruding from the coal hopper body (1) on the same side... The two side plates (23) at the side ends are in the same group. The two side plates (23) in the same group are vertically provided with guide grooves (231) along the length direction on the end face of the two side plates (21) that are close to each other. The two vertical plates (21) are horizontally provided with sliding grooves (211) that smoothly connect the guide grooves (231) on both sides. The upper cover plate (3) is a metal chain plate and is divided into two parts. The two sides of the upper cover plate (3) are embedded in the sliding grooves (211) and block the opening at the top of the coal hopper body (1). The two sides of the upper cover plate (3) slide completely into the guide grooves (231) along the sliding grooves (211) and open the opening at the top of the coal hopper body (1).

2. The coal hopper with an automatic cover control device as described in claim 1, characterized in that: At the connection between the vertical plate (21) and the side plate (23), a drive sprocket (24) is rotatably provided, which meshes with the back of the upper cover plate (3) and drives the upper cover plate (3) to move along the slide groove (211) and the guide groove (231). At the side end of the coal hopper body (1), a motor is provided on the lower side of the horizontal plate (22) to drive the drive sprocket (24) to rotate via a chain.

3. The coal hopper with an automatic cover control device as described in claim 1, characterized in that: A sealing plate (25) is vertically installed on the side end of the two side plates (23) away from the coal hopper body (1). A storage cavity (26) is formed between the sealing plate (25) and the two side plates (23) for the upper cover plate (3) to slide into and be stored.

4. The coal hopper with an automatic cover control device as described in claim 3, characterized in that: The top of the sealing plate (25) is bent in the direction of the sliding bending of the upper cover plate (3) and the end is connected to the sealing piece (251) by a torsion spring. The sealing piece (251) covers the storage cavity (26).

5. The coal hopper with an automatic cover control device as described in claim 3, characterized in that: An elastic rubber sheet (31) is fixed on the upper end surface of the upper cover plate (3), and the elastic rubber sheet (31) bends and covers the head end and tail end of the upper cover plate (3) in the direction of movement.

6. The coal hopper with an automatic cover control device as described in claim 1, characterized in that: It also includes a lower cover plate (4) disposed at the lower end of the coal hopper body (1) and which closes or opens the bottom opening of the coal hopper body (1) as it is used. The coal hopper body (1) includes a feed end (11) with a large diameter at the top, a discharge end (13) with a small diameter at the bottom, and a narrowing channel (12) connecting the feed end (11) and the discharge end (13). The discharge end (13) has symmetrical horizontal sliding ports (131) on both sides parallel to each other. The lower cover plate (4) is divided into two parts and each part is horizontally slidably inserted into the two sliding ports (131).

7. The coal hopper with an automatic cover control device as described in claim 6, characterized in that: The discharge end (13) has parallel side walls with horizontally opened slides (132) that connect to the interior of the discharge end (13). Both ends of the two slides (132) are connected to the two sliding ports (131). Two sliders (133) are horizontally slidably embedded in the two slides (132). The two sides of the two parts of the lower cover plate (4) are coaxially provided with rotating shafts that are rotatably connected to the sliders (133). When the lower cover plate (4) rotates to completely disengage from the sliding port (131), it rotates to a vertical position and is fixed to the outer surface of the feed end (11).

8. The coal hopper with an automatic cover control device as described in claim 7, characterized in that: Multiple magnetic pieces (41) are embedded in the two ends of the lower cover plate (4) and magnetically fixed to the side of the discharge end (13).

9. The coal hopper with an automatic cover control device as described in claim 7, characterized in that: The two lower cover plates (4) are slidably inserted into the discharge end (13) and abut against each other, and a sealing strip (42) is provided on one side.

10. The coal hopper with an automatic cover control device as described in claim 9, characterized in that: The sealing strip (42) includes a main strip (421) and a secondary strip (422). The side end of the main strip (421) is provided with a snap-fit ​​strip (4211) with a ball-shaped cross section. The secondary strip (422) is provided with a snap-fit ​​groove (4221) along its length on the side end near the main strip (421) for the snap-fit ​​strip (4211) to be inserted and snapped. The two halves of the lower cover plate (4) are provided with a handle (43) of the same thickness as itself on the side end away from the sealing strip (42). When the lower cover plate (4) is fully inserted into the sliding port (131), the handle (43) is located outside the sliding port (131).

Images