Scraper conveyer for conveying coal

Abstract

The invention discloses a scraper conveyor for coal conveying, and relates to the field of conveyors, the scraper conveyor comprises a conveying case, the top side and the bottom side of the conveying case are respectively provided with a feeding box, a power motor and a discharging cover, the conveying case is internally provided with two transmission shafts, and the power motor is in transmission connection with one transmission shaft. It needs to be explained that when coal is conveyed, coal on a scraper is scraped off through reciprocating movement of a cleaning push plate, the coal on the scraper is scraped off again through rotation of the cleaning push plate, meanwhile, a middle scraping strip drives two receding scraping strips to move, and the coal accumulated on the inner wall of a conveying machine box is fully scraped off; in addition, when coal in the conveyor box is overloaded due to faults, water in a water inlet pipe enters a water spraying ring pipe through a transfer box to clean the interior of the conveyor box, a scraper blade continuously operates to clean the coal, and automatic feeding is achieved after cleaning, so that the purpose of continuous operation is achieved.

Description

Technical Field

[0001] This invention relates to the field of conveyor technology, and more particularly to a scraper conveyor for coal conveying. Background Technology

[0002] Coal conveying is a crucial part of the coal mining process, and scraper conveyors are commonly used equipment in coal transportation. The working principle of a scraper conveyor is as follows: an open chute serves as the receiving element for coal, gangue, or other materials. Scrapers are fixed to a chain (forming a scraper chain) as the traction component. When the head drive unit starts, it drives the sprocket on the head shaft to rotate, causing the scraper chain to circulate and move the material along the chute until it is unloaded at the head of the conveyor. The scraper chain then loops around the sprocket in a continuously closed loop, completing the material conveying process.

[0003] When a scraper conveyor transports coal, the coal enters through the feed box. A motor drives two drive shafts, which in turn rotate multiple conveyor wheels, driving two conveyor chains. These chains in turn drive multiple scrapers to transport the coal, which is then discharged through a discharge hood. However, due to the varying environments in which coal exists, it is not always dry; it can be of different viscosities. When this moist, viscous coal is scraped by the scrapers, it tends to stick to the scrapers or to any part of the conveyor housing. As the conveyor continues to operate, this accumulation increases until the scrapers can no longer transport the coal, causing the entire conveyor to become overloaded and unable to transport coal. This can even lead to overload damage to other components on the conveyor. Summary of the Invention

[0004] The purpose of this invention is to provide a scraper conveyor for coal transportation to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: A scraper conveyor for coal transportation includes a conveyor housing, on the top and bottom sides of which a feed box, a power motor, and a discharge hood are respectively installed. Two drive shafts are installed inside the conveyor housing. The power motor is connected to one of the drive shafts. Two transmission wheels are installed on the drive shafts. A transmission chain is connected to the two transmission wheels on the same side. Multiple scrapers are installed on the two transmission chains. It also includes a scraper side cleaning device, which is installed on both sides of the conveyor box and is used to clean the scraper. The scraper side cleaning device includes two cleaning side boxes, which are respectively installed on both sides of the conveyor box. A transverse cleaning sleeve is slidably installed in the cleaning side box. A return frame is rotatably installed on the transverse cleaning sleeve, and a cleaning push plate is installed on the bottom side of the return frame. The cleaning push plate moves to scrape the coal off the scraper, and a dirt cover is installed on the cleaning push plate. It also includes an intermediate synchronous cleaning device, which is installed on the conveyor box and is used to scrape the inner wall of the conveyor box; the intermediate synchronous cleaning device includes two intermediate scraping strips, which are slidably installed on both sides of the conveyor box, and retractable scraping strips are slidably installed on both sides of the intermediate scraping strips. It also includes an overload active cleaning device, which is installed on the top side of the conveyor box and is used to spray water to clean the conveyor box; the overload active cleaning device includes a water spray ring pipe, which is installed on the top side of the conveyor box, a transfer box is installed on the water spray ring pipe, and a water inlet pipe is installed on the transfer box.

[0006] Furthermore, in a preferred embodiment of the present invention, the cleaning device on both sides of the scraper further includes two driving cylinders, which are respectively rotatably mounted on the two cleaning side boxes; Cleaning gears are installed on one side of each of the two driving cylinders. Two follower racks are slidably installed on the conveyor box. The two follower racks mesh with the two cleaning gears. A rotary pusher is installed on each of the two drive shafts. The rotary pusher rotates to push the follower racks to move. A reciprocating spring connects the follower racks to the conveyor box. The driving cylinder has a driving arc groove, and the inner wall of the transverse cleaning sleeve is equipped with a driving adapter block, which is movably installed in the driving arc groove.

[0007] Furthermore, in a preferred embodiment of the present invention, a positioning bracket is installed on the bottom side of the return rotating frame, a rotating seat is installed on the cleaning push plate, and the positioning bracket is rotatably mounted on the rotating seat; A drive bar is installed on the cleaning push plate, a telescopic bracket is movably installed on the bottom side of the return rotating frame, a drive shaft is rotatably installed on the telescopic bracket, the drive shaft is movably installed inside the drive bar, and a telescopic spring is installed between the return rotating frame and the telescopic bracket.

[0008] Furthermore, in a preferred embodiment of the present invention, a transfer bracket is rotatably mounted on the transverse cleaning sleeve, a transfer support is mounted on the transfer bracket, and the return rotating frame is rotatably mounted on the transfer support. The transverse cleaning sleeve has an installation cavity, in which an installation shaft is rotatably installed. The installation shaft is mounted on the adapter bracket, and a rotary torsion spring is mounted on the installation shaft. The rotary torsion spring is mounted on the inner wall of the installation cavity.

[0009] Furthermore, in a preferred embodiment of the present invention, a torsion groove is provided on the adapter support, a torsion shaft is rotatably installed in the torsion groove, and the return frame is installed on the torsion shaft; A push plate is mounted at the top of the torsion shaft, and a push wheel is rotatably mounted on the push plate.

[0010] Furthermore, in a preferred embodiment of the present invention, a torsion spring is installed on the torsion shaft, and the torsion spring is installed on the inner wall of the torsion groove.

[0011] Furthermore, in a preferred embodiment of the present invention, the intermediate synchronous cleaning device further includes two cleaning lifting frames, lifting sliding holes are provided on both sides of the conveyor box, and closed sliding plates are slidably installed in the two lifting sliding holes. The two cleaning lifting frames are respectively installed on the two closed sliding plates, and the two intermediate scrapers are respectively installed on the two closed sliding plates. Both ends of the drive shaft are equipped with linkage rods, and linkage sliding shafts are installed on the linkage rods. The cleaning lifting frame has linkage sliding holes, and the linkage sliding shafts are movably installed in the linkage sliding holes.

[0012] Furthermore, in a preferred embodiment of the present invention, a push-out spring is installed on the retracting scraper, and the push-out spring is installed on the inner wall of the intermediate scraper.

[0013] Furthermore, in a preferred embodiment of the present invention, the overload active cleaning device further includes a feed sealing plate and a water inlet sealing plate, wherein the feed sealing plate and the water inlet sealing plate are respectively rotatably installed in the transfer box and the feed box; A sliding opening and closing push frame is installed on one side of the conveyor box. Two transition rods are movably installed on the opening and closing push frame. The two transition rods are respectively installed on the feed sealing plate and the water inlet sealing plate. Both of the two adapter rods are equipped with adapter shafts, which are respectively installed on the feed sealing plate and the water inlet sealing plate. The other two adapter shafts are movably installed inside the opening and closing push frame.

[0014] Furthermore, in a preferred embodiment of the present invention, support rods are installed at the four corners of the bottom side of the conveyor box, support seats are sleeved on the support rods, and support springs are connected between the support rods and the support seats.

[0015] The beneficial effects of the scraper conveyor for coal transportation proposed in this invention are: In this invention, by setting up cleaning devices on both sides of the scraper, when the scraper contacts any cleaning push plate, the return force of the telescopic spring causes the telescopic bracket to move via the drive shaft, and the drive bar causes the cleaning push plate to maintain close contact with the scraper. At the same time, when the transmission shaft rotates, it drives the rotating push frame to rotate, causing the rotating push frame to push the follower rack frame to slide. The follower rack frame drives the cleaning gear to rotate, and the cleaning gear squeezes the drive transition block through the drive arc groove, causing the drive transition block to drive the transverse cleaning sleeve to move, thereby driving the cleaning push plate to move and scrape the coal off the scraper. In addition, when the transition support continues to move, it drives the push plate to contact the inner wall of the conveyor box, thereby squeezing the push wheel, causing the return frame to drive the cleaning push plate to rotate through the positioning bracket and the telescopic bracket, scraping the coal on the scraper into the conveyor box, ensuring the cleaning effect of the scraper, achieving sufficient cleaning of the scraper, and ensuring the conveying effect of the scraper.

[0016] Furthermore, in this invention, by setting up an intermediate synchronous cleaning device, when the transmission shaft rotates, it drives the linkage rod to rotate, so that the linkage rod drives the cleaning lifting frame to move through the linkage sliding shaft. When the linkage rod rotates one revolution, it drives the cleaning lifting frame to rise and fall once, thereby realizing the raising and lowering of the cleaning lifting frame. At the same time, when the cleaning lifting frame moves, it drives the intermediate scraper to move through the closed sliding plate, so that the intermediate scraper scrapes off the coal accumulated on the inner wall of the conveyor box, avoiding the problem of coal sticking inside the conveyor box.

[0017] Furthermore, in this invention, by setting up an overload active cleaning device, when the coal in the conveyor box is overloaded due to a malfunction, it drives the four support rods to move downwards within the four support seats, causing the four support springs to be stressed. At the same time, the opening and closing push frame is squeezed upwards by the ground. The movement of the opening and closing push frame drives the two transfer rods to rotate, and the two transfer rods drive the feed sealing plate and the water inlet sealing plate to rotate, thereby causing the feed sealing plate to close the feed box. The rotation of the water inlet sealing plate opens the transfer box, allowing the water in the water inlet pipe to enter the water spray ring pipe through the transfer box to clean the inside of the conveyor box. The scraper continues to operate until the coal is cleaned out. Then, under the rebound force of the four support springs, the conveyor box is reset, thereby realizing the automatic cleaning of the conveyor box and automatic feeding after cleaning, achieving the purpose of continuous operation. Attached Figure Description

[0018] Figure 1A three-dimensional structural schematic diagram of a scraper conveyor for coal transportation provided in an embodiment of the present invention; Figure 2 This is a schematic diagram of the internal structure of a scraper conveyor for coal transportation provided in an embodiment of the present invention; Figure 3 This is a schematic diagram illustrating the connection between the cleaning side box and the water inlet pipe of a scraper conveyor for coal transportation, as provided in an embodiment of the present invention. Figure 4 This is a schematic diagram of the connection between the transverse cleaning sleeve and the return rotating frame of a scraper conveyor for coal transportation, provided by an embodiment of the present invention. Figure 5 This is a partial cross-sectional view of the connection between the transverse cleaning sleeve and the drive cylinder of a scraper conveyor for coal transportation, as provided in an embodiment of the present invention. Figure 6 A scraper conveyor for coal transportation is provided as an embodiment of the present invention. Figure 5 A schematic diagram of the structure of part A; Figure 7 This is a partial cross-sectional view of the connection between the transfer support and the push plate of a scraper conveyor for coal transportation, as provided in an embodiment of the present invention. Figure 8 This is a partial cross-sectional view of the connection between the conveyor box and the follower rack and pinion frame of a scraper conveyor for coal transportation, as provided in an embodiment of the present invention. Figure 9 This is a partial structural diagram illustrating the connection between the transverse cleaning sleeve and the cleaning lifting frame of a scraper conveyor used for coal transportation, as provided in an embodiment of the present invention. Figure 10 This is a partial cross-sectional view of the connection between the enclosed sliding plate and the cleaning lifting frame of a scraper conveyor for coal transportation, as provided in an embodiment of the present invention. Figure 11 This is a partial cross-sectional view of the connection between the intermediate scraper and the yielding scraper of a scraper conveyor for coal transportation, provided in an embodiment of the present invention. Figure 12 This is a partial structural diagram illustrating the connection between the transfer shaft and the transfer rod of a scraper conveyor for coal transportation, provided in an embodiment of the present invention. Figure 13 This is a partial cross-sectional view of the connection between the support rod and support seat of a scraper conveyor for coal transportation, as provided in an embodiment of the present invention.

[0019] In the diagram: 1-Conveyor box; 2-Feed box; 3-Discharge hood; 4-Drive shaft; 5-Conveyor chain; 6-Scraper; 7-Scraper side cleaning device; 701-Cleaning side box; 702-Transverse cleaning sleeve; 703-Return rotating frame; 704-Cleaning push plate; 705-Positioning bracket; 706-Telescopic bracket; 707-Drive bar; 708-Rotating seat; 709-Drive shaft; 710-Telescopic spring; 711-Rotary push frame; 712-Mounting cavity; 713-Mounting shaft; 714-Rotary torsion spring; 715-Adapter support; 716-Push rotating plate; 717-Torsion groove; 718-Torsion shaft; 719-Torsion torsion spring; 720-Anti-fouling cover; 721-Push wheel; 722-Drive cylinder; 723-Drive arc groove; 724- Drive adapter block; 725-Cleansing gear; 726-Follower rack frame; 727-Adapter bracket; 728-Reciprocating spring; 8-Intermediate synchronous cleaning device; 801-Intermediate scraper; 802-Retracting scraper; 803-Push-out spring; 804-Lifting slide hole; 805-Closing slide plate; 806-Cleansing lifting frame; 807-Linkage rotating rod; 808-Linkage sliding shaft; 809-Linkage sliding hole; 9-Overload active cleaning device; 901-Water spray ring pipe; 902-Transfer box; 903-Water inlet pipe; 904-Feed sealing plate; 905-Water inlet sealing plate; 906-Adapter shaft; 907-Adapter rotating rod; 908-Support rod; 909-Support seat; 910-Support spring; 911-Opening and closing push frame; 10-Transmission wheel; 11-Power motor. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0021] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0022] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0023] Furthermore, in the description of this invention, it should be noted that the terms "center," "upper," "lower," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this invention is in use. They are only for the convenience of describing this invention 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, and therefore should not be construed as a limitation of this invention. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0024] Furthermore, terms such as "horizontal," "vertical," and "perpendicular" do not imply that components must be absolutely vertical, but rather that they can be slightly tilted. For example, "vertical" simply means that its direction is more vertical relative to "horizontal," not that the structure must be completely vertical, but can be slightly tilted.

[0025] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0026] Please refer to the attached instruction manual. Figures 1-2 The present invention provides a scraper conveyor for coal transportation, which includes a conveyor box 1. A feed box 2, a power motor 11 and a discharge hood 3 are respectively installed on the top and bottom sides of the conveyor box 1. Two drive shafts 4 are installed inside the conveyor box 1. The power motor 11 is connected to one of the drive shafts 4. Two transmission wheels 10 are installed on the drive shaft 4. The two transmission wheels 10 located on the same side are connected to the two transmission chains 5. Multiple scrapers 6 are installed on the two transmission chains 5.

[0027] Further, please refer to the appendix to the instruction manual. Figures 3-9This invention provides a scraper conveyor for coal transportation, which further includes a scraper side cleaning device 7. The scraper side cleaning device 7 is installed on both sides of the conveyor housing 1 and is used to clean the scraper 6. Specifically, the scraper side cleaning device 7 includes two cleaning side boxes 701, which are respectively installed on both sides of the conveyor housing 1. A transverse cleaning sleeve 702 is slidably installed inside the cleaning side box 701. A return frame 703 is rotatably installed on the transverse cleaning sleeve 702, and a cleaning push plate 704 is installed on the bottom side of the return frame 703. The cleaning push plate 704 moves to scrape the coal off the scraper 6, and a dirt cover 720 is installed on the cleaning push plate 704. It should be noted that, in this embodiment of the invention, when conveying coal, the coal on the scraper 6 is scraped off by the reciprocating movement of the cleaning push plate 704, and the coal on the scraper 6 is scraped off by pushing the rotating plate 716 to rotate, thus achieving thorough cleaning of the scraper 6.

[0028] More specifically, in this embodiment of the invention, an intermediate synchronous cleaning device 8 is also included. The intermediate synchronous cleaning device 8 is installed on the conveyor box 1 and is used to scrape the inner wall of the conveyor box 1. The intermediate synchronous cleaning device 8 includes two intermediate scraper strips 801, which are slidably installed on both sides of the conveyor box 1. Retreating scraper strips 802 are slidably installed on both sides of each intermediate scraper strip 801. It should be noted that in this embodiment of the invention, when the drive shaft 4 rotates, the intermediate scraper strips 801 drive the two retreating scraper strips 802 to move, fully scraping away the coal accumulated on the inner wall of the conveyor box 1, ensuring the normal operation of the conveyor box 1.

[0029] More specifically, in this embodiment of the invention, an overload active cleaning device 9 is also included. The overload active cleaning device 9 is installed on the top side of the conveyor box 1 and is used to spray water to clean the conveyor box 1. The overload active cleaning device 9 includes a water spray ring pipe 901, which is installed on the top side of the conveyor box 1. A transfer box 902 is installed on the water spray ring pipe 901, and a water inlet pipe 903 is installed on the transfer box 902. It should be noted that in this embodiment of the invention, if the coal in the conveyor box 1 is not discharged in time due to moisture or other reasons, thereby causing the conveyor box 1 to be overloaded, the feed sealing plate 904 closes the feed box 2, and the transfer box 902 is opened by rotating the water inlet sealing plate 905, so that the water in the water inlet pipe 903 enters the water spray ring pipe 901 through the transfer box 902 to clean the inside of the conveyor box 1, and the scraper 6 continues to operate until the coal is cleaned up, thereby achieving the purpose of automatically cleaning the conveyor box 1.

[0030] Please continue to refer to the instruction manual appendix. Figures 3-9Furthermore, in an embodiment of the present invention, a scraper conveyor for coal conveying includes a scraper side cleaning device 7 further comprising two driving cylinders 722, which are rotatably mounted on two cleaning side boxes 701 respectively; a cleaning gear 725 is mounted on one side of each of the two driving cylinders 722; two follower rack frames 726 are slidably mounted on the conveyor housing 1, which mesh with the two cleaning gears 725; and a rotary push frame 711 is mounted on each of the two transmission shafts 4, which rotates to push the follower rack frame 726 to move; and a reciprocating spring 728 is connected between the follower rack frame 726 and the conveyor housing 1. In addition, a drive arc groove 723 is provided on the drive cylinder 722, and a drive adapter block 724 is installed on the inner wall of the transverse cleaning sleeve 702. The drive adapter block 724 is movably installed in the drive arc groove 723. It should be noted that, in this embodiment of the invention, when the transmission shaft 4 rotates, it drives the rotating push frame 711 to rotate, causing the rotating push frame 711 to push the follower rack frame 726 to slide, and causing the reciprocating spring 728 to be stressed. The follower rack frame 726 drives the cleaning gear 725 to rotate, causing the cleaning gear 725 to squeeze the drive adapter block 724 through the drive arc groove 723, thereby causing the drive adapter block 724 to drive the transverse cleaning sleeve 702 to move. When the rotating push frame 711 continues to rotate, it disengages from the follower rack frame 726. At this time, under the rebound force of the reciprocating spring 728, the follower rack frame 726 is pulled back to reset, causing the transverse cleaning sleeve 702 to reset, realizing the reciprocating movement of the transverse cleaning sleeve 702, thereby causing the transverse cleaning sleeve 702 to drive the cleaning push plate 704 to scrape the scraper 6.

[0031] More specifically, in this embodiment of the invention, a positioning bracket 705 is installed on the bottom side of the return frame 703, and a rotating seat 708 is installed on the cleaning push plate 704. The positioning bracket 705 is rotatably mounted on the rotating seat 708. In addition, a driving bar 707 is installed on the cleaning push plate 704, and a telescopic bracket 706 is movably installed on the bottom side of the return frame 703. A driving shaft 709 is rotatably installed on the telescopic bracket 706 and is movably installed within the driving bar 707. A telescopic spring 710 is installed between the return frame 703 and the telescopic bracket 706. It should be noted that, in this embodiment of the invention, when the scraper 6 presses against the cleaning push plate 704, the telescopic bracket 706, through the driving shaft 709, drives the driving bar 707 to move, and the driving bar 707 drives the cleaning push plate 704 to maintain close contact with the scraper 6.

[0032] Please continue to refer to the instruction manual appendix. Figures 3-9More specifically, in this embodiment of the invention, a transition bracket 727 is rotatably mounted on the transverse cleaning sleeve 702, a transition support 715 is mounted on the transition bracket 727, and a return frame 703 is rotatably mounted on the transition support 715; in addition, an installation cavity 712 is opened on the transverse cleaning sleeve 702, an installation shaft 713 is rotatably mounted in the installation cavity 712, the installation shaft 713 is mounted on the transition bracket 727, a rotary torsion spring 714 is mounted on the installation shaft 713, and the rotary torsion spring 714 is mounted on the inner wall of the installation cavity 712. It should be noted that, in this embodiment of the invention, when the scraper 6 disengages from the cleaning push plate 704, the cleaning push plate 704 pushes the adapter 715 to rotate via the positioning bracket 705. The adapter 715 drives the adapter 727 to rotate on the mounting shaft 713, and causes the rotary torsion spring 714 to be stressed. When a scraper 6 disengages from the cleaning push plate 704, the cleaning push plate 704 is reset under the rebound force of the rotary torsion spring 714, thereby achieving continuous cleaning of the scraper 6.

[0033] More specifically, in this embodiment of the invention, a torsion groove 717 is provided on the adapter support 715, a torsion shaft 718 is rotatably installed in the torsion groove 717, and a return frame 703 is installed on the torsion shaft 718; a push plate 716 is installed at the top of the torsion shaft 718, and a push wheel 721 is rotatably installed on the push plate 716. It should be noted that, in this embodiment of the invention, when the adapter support 715 moves continuously, it drives the push plate 716 to contact the inner wall of the conveyor box 1, thereby squeezing the push wheel 721 and causing the push plate 716 to rotate. The rotation of the push plate 716 drives the return frame 703 to rotate through the torsion shaft 718, and at the same time, the torsion spring 719 is subjected to force, thereby causing the return frame 703 to drive the cleaning push plate 704 to rotate through the positioning bracket 705 and the telescopic bracket 706, scraping the coal on the scraper 6 into the conveyor box 1, so that the scraper 6 can rotate and scrape while moving laterally, thus achieving full scraping of the coal on the scraper 6.

[0034] More specifically, in this embodiment of the invention, a torsion spring 719 is installed on the torsion shaft 718, and the torsion spring 719 is installed on the inner wall of the torsion groove 717. It should be noted that, in this embodiment of the invention, when the return frame 703 is reset, the rebound force of the torsion spring 719 drives the cleaning push plate 704 to reset, thereby realizing the automatic rotation of the rotating plate 716.

[0035] Please refer to the instruction manual attached. Figures 9-11Furthermore, the scraper conveyor for coal conveying provided in this embodiment of the invention includes an intermediate synchronous cleaning device 8 that further includes two cleaning lifting frames 806. Lifting sliding holes 804 are provided on both sides of the conveyor box 1. Enclosed sliding plates 805 are slidably installed in both lifting sliding holes 804. The two cleaning lifting frames 806 are respectively installed on the two enclosed sliding plates 805. The two intermediate scrapers 801 are respectively installed on the two enclosed sliding plates 805. In addition, both ends of a drive shaft 4 are equipped with linkage rods 807, and linkage sliding shafts 808 are installed on the linkage rods 807. The cleaning lifting frame 806 has linkage sliding holes 809, and the linkage sliding shaft 808 is movably installed in the linkage sliding holes 809. It should be noted that, in this embodiment of the invention, when the drive shaft 4 rotates, it drives the linkage rods 807 to rotate, so that the linkage rods 807 drive the cleaning lifting frame 806 to move through the linkage sliding shafts 808. At the same time, the linkage sliding shaft 808 slides in the linkage sliding holes 809, and when the linkage rods 807 rotate one revolution, it drives the cleaning lifting frame 806 to rise and fall once, thereby realizing the raising and lowering of the cleaning lifting frame 806. Meanwhile, when the cleaning lifting frame 806 moves, it drives the intermediate scraper 801 to move through the closed sliding plate 805, so that the intermediate scraper 801 scrapes off the coal accumulated on the inner wall of the conveyor box 1.

[0036] More specifically, in this embodiment of the invention, a push-out spring 803 is installed on the retracting scraper 802, and the push-out spring 803 is installed on the inner wall of the intermediate scraper 801. It should be noted that, in this embodiment of the invention, the rebound force of the push-out spring 803 can help the retracting scraper 802 to be pushed out, thereby realizing the automatic extension and retraction of the retracting scraper 802.

[0037] Please refer to the instruction manual attached. Figure 3 and Figures 12-13 Furthermore, the scraper conveyor for coal transportation provided in this embodiment of the invention includes an overload active cleaning device 9 that further includes a feed sealing plate 904 and a water inlet sealing plate 905, which are rotatably installed in the transfer box 902 and the feed box 2, respectively. In addition, a sliding opening and closing push frame 911 is installed on one side of the conveyor box 1. Two transition rods 907 are movably installed on the opening and closing push frame 911. The two transition rods 907 are respectively installed on the feed sealing plate 904 and the water inlet sealing plate 905. Each of the two transition rods 907 is equipped with a transition shaft 906. The two transition shafts 906 are respectively installed on the feed sealing plate 904 and the water inlet sealing plate 905. The other two transition shafts 906 are movably installed inside the opening and closing push frame 911. It should be noted that, in this embodiment of the invention, when the conveyor box 1 is overloaded, the opening and closing pusher 911 is pushed upward by the ground. The movement of the opening and closing pusher 911 drives the two transition shafts 906 to rotate. The rotation of the two transition shafts 906 drives the two transition rods 907 to rotate. The two transition rods 907 drive the feed sealing plate 904 and the water inlet sealing plate 905 to rotate through the other two transition shafts 906. This causes the feed sealing plate 904 to close the feed box 2, and the rotation of the water inlet sealing plate 905 to open the transfer box 902. This allows the water in the water inlet pipe 903 to enter the water spray ring pipe 901 through the transfer box 902 to clean the inside of the conveyor box 1. The scraper 6 continues to operate until the coal is removed, thus achieving the purpose of automatically cleaning the conveyor box 1.

[0038] More specifically, in this embodiment of the invention, support rods 908 are installed at the four corners of the bottom side of the conveyor box 1. Support seats 909 are sleeved on the support rods 908, and support springs 910 are connected between the support rods 908 and the support seats 909. It should be noted that, in this embodiment of the invention, when the conveyor box 1 is overloaded, the four support rods 908 move downward within the four support seats 909, causing the four support springs 910 to be stressed. Therefore, the rebound force of the four support springs 910 can drive the conveyor box 1 to reset, allowing the conveyor box 1 to continue operating.

[0039] In summary, the working principle of a scraper conveyor for coal transportation provided in this embodiment of the invention is as follows: When conveying coal, it is fed through the feed box 2, and driven by the power motor 11, two transmission shafts 4 rotate, causing multiple conveyor wheels 10 to drive two conveyor chains 5 to rotate. The two conveyor chains 5 drive multiple scrapers 6 to rotate, conveying the coal, which is then output through the discharge hood 3. When a scraper 6 contacts any of the cleaning push plates 704, because the scraper 6 is at the bend of the conveyor wheel 10, the return force of the telescopic spring 710 causes the telescopic bracket 706 to move the drive bar 707 via the drive shaft 709. The drive bar 707 causes the cleaning push plate 704 to maintain close contact with the scraper 6. First, according to Figure 4To explain, during the rotation of scraper 6, it comes into contact with cleaning push plate 704. If cleaning push plate 704 needs to scrape away scraper 6, it must maintain constant contact with the surface of scraper 6. However, scraper 6 does not move vertically but rotates, which necessitates that cleaning push plate 704 also rotate to a certain extent. Therefore, according to... Figure 4 It can be clearly seen that when the scraper 6 rotates continuously, it squeezes and pushes the cleaning push plate 704 to rotate. The cleaning push plate 704 then drives the telescopic bracket 706 to move in the opposite direction through the driving bar 707. The telescopic bracket 706 slides on the driving bar 707 through the driving shaft 709. Therefore, under the rebound force of the telescopic spring 710, the telescopic bracket 706 can rebound, which in turn causes the driving bar 707 to drive the cleaning push plate 704 to maintain close contact with the scraper 6. This ensures that when the scraper 6 rotates, the cleaning push plate 704 is in contact with the scraper 6. As the cleaning push plate 704 moves, it can fully scrape away the impurities on the scraper 6. Furthermore, when the scraper 6 moves continuously, it squeezes the cleaning push plate 704 in the opposite direction. The cleaning push plate 704 rotates on the positioning bracket 705 through the rotating seat 708, which keeps the cleaning push plate 704 in contact with the scraper 6. Furthermore, when the scraper 6 disengages from the cleaning push plate 704, the cleaning push plate 704 pushes the adapter support 715 to rotate via the positioning bracket 705. The adapter support 715 drives the adapter bracket 727 to rotate on the mounting shaft 713, causing the rotary torsion spring 714 to be stressed. When one scraper 6 disengages from the cleaning push plate 704, the return force of the rotary torsion spring 714 causes the cleaning push plate 704 to return to its original position, thus allowing the cleaning push plate 704 to continue contacting the next scraper 6. Figure 4 and Figure 6As can be seen, during the continuous rotation of scraper 6, the rotation angle of cleaning push plate 704 is relatively large, and the scraping is completed. Therefore, as scraper 6 continues to rotate, it pushes cleaning push plate 704 to rotate, causing cleaning push plate 704 to push adapter support 715 to rotate via positioning bracket 705. Adapter support 715 drives adapter bracket 727 to rotate on mounting shaft 713, causing rotary torsion spring 714 to be stressed until scraper 6 disengages from cleaning push plate 4, thus completing the cleaning work of one scraper 6. When one scraper 6 disengages from cleaning push plate 704, the return force of rotary torsion spring 714 causes cleaning push plate 704 to reset. When the next scraper 6 continues to rotate, it re-engages with the reset cleaning push plate 704. 4. Contact, thereby realizing the repeated cleaning action of scraper 6. When the drive shaft 4 rotates, it drives the rotating push frame 711 to rotate, so that the rotating push frame 711 pushes the follower rack frame 726 to slide, and the reciprocating spring 728 is stressed. The follower rack frame 726 drives the cleaning gear 725 to rotate, so that the cleaning gear 725 squeezes the drive adapter block 724 through the drive arc groove 723. The drive adapter block 724 drives the transverse cleaning sleeve 702 to move. When the rotating push frame 711 continues to rotate, it disengages from the follower rack frame 726. At this time, under the rebound force of the reciprocating spring 728, the follower rack frame 726 is pulled back to reset, thereby resetting the transverse cleaning sleeve 702, realizing the reciprocating movement of the transverse cleaning sleeve 702. It should be noted that the movement of the transverse cleaning sleeve 702 drives the movement of the transfer support 715 via the transfer bracket 727. The transfer support 715, through the return rotating frame 703, drives the positioning bracket 705 and the telescopic bracket 706 to move, which in turn drives the cleaning push plate 704 to move and scrape the coal off the scraper 6. Furthermore, as the transfer support 715 continues to move, it drives the push plate 716 to contact the inner wall of the conveyor box 1, thereby squeezing the push wheel 721 and causing the push plate 716 to rotate. The rotation of the push plate 716 is controlled by the torsion shaft 718. The rotating frame 703 is driven to rotate, which in turn causes the torsion spring 719 to be stressed. This causes the rotating frame 703 to drive the cleaning push plate 704 to rotate through the positioning bracket 705 and the telescopic bracket 706, scraping the coal on the scraper 6 into the conveyor box 1, thus ensuring the cleaning effect of the scraper 6. In addition, when the rotating frame 703 is reset, the rebound force of the torsion spring 719 drives the cleaning push plate 704 to reset. Therefore, through the lateral movement and rotation of the cleaning push plate 704, each scraper 6 in contact with it is cleaned, ensuring the conveying effect of the scraper 6. Furthermore, it should be noted that when the drive shaft 4 rotates, it drives the linkage rod 807 to rotate, causing the linkage rod 807 to drive the cleaning lifting frame 806 to move through the linkage sliding shaft 808. At the same time, the linkage sliding shaft 808 slides in the linkage sliding hole 809. When the linkage rod 807 rotates one revolution, it drives the cleaning lifting frame 806 to rise and fall once, thus realizing the raising and lowering of the cleaning lifting frame 806. At the same time, when the cleaning lifting frame 806 moves, it drives the intermediate scraper 801 to move through the closed sliding plate 805, so that the intermediate scraper 801 scrapes away the coal accumulated on the inner wall of the conveyor box 1. When the intermediate scraper 801 moves, it drives the two retracting scrapers 802 to move. When the retracting scrapers 802 are squeezed by the conveyor wheel 10, the retracting scrapers 802 retract into the intermediate scraper 801, and the push-out spring 803 is subjected to force. Therefore, by setting the retracting scrapers 802, the coal accumulated on the inner wall of the conveyor box 1 can be fully scraped away. Furthermore, if the coal in the conveyor box 1 is not discharged in time due to moisture or other reasons, causing the coal to accumulate continuously, this will cause the four support rods 908 to move downwards within the four support seats 909, and force the four support springs 910. Simultaneously, the opening and closing push frame 911 will be pushed upwards by the ground. The movement of the opening and closing push frame 911 will cause the two transition shafts 906 to rotate, which in turn will cause the two transition rods 907 to rotate. The two transition rods 907 will then rotate via two other... The adapter shaft 906 drives the feed sealing plate 904 and the water inlet sealing plate 905 to rotate, thereby causing the feed sealing plate 904 to close the feed box 2, and the rotation of the water inlet sealing plate 905 to open the transfer box 902, so that the water in the water inlet pipe 903 enters the water spray ring pipe 901 through the transfer box 902 to clean the inside of the conveyor box 1; in addition, the scraper 6 continues to operate until the coal is cleared away, and then the return force of the four support springs 910 causes the conveyor box 1 to reset, thereby ensuring the continuous operation of the conveyor box 1.

[0040] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A scraper conveyor for coal transportation, characterized in that, It includes a conveyor box, on the top and bottom sides of which a feed box, a power motor, and a discharge hood are respectively installed. Two drive shafts are installed inside the conveyor box. The power motor is connected to one of the drive shafts. Two conveyor wheels are installed on the drive shafts. A conveyor chain is connected to the two conveyor wheels on the same side. Multiple scrapers are installed on the two conveyor chains. It also includes a scraper side cleaning device, which is installed on both sides of the conveyor box and is used to clean the scraper. The scraper side cleaning device includes two cleaning side boxes, which are respectively installed on both sides of the conveyor box. A transverse cleaning sleeve is slidably installed in the cleaning side box. A return frame is rotatably installed on the transverse cleaning sleeve, and a cleaning push plate is installed on the bottom side of the return frame. The cleaning push plate moves to scrape the coal off the scraper, and a dirt cover is installed on the cleaning push plate. It also includes an intermediate synchronous cleaning device, which is installed on the conveyor box and is used to scrape the inner wall of the conveyor box; the intermediate synchronous cleaning device includes two intermediate scraping strips, which are slidably installed on both sides of the conveyor box, and retractable scraping strips are slidably installed on both sides of the intermediate scraping strips. It also includes an overload active cleaning device, which is installed on the top side of the conveyor box and is used to spray water to clean the conveyor box; the overload active cleaning device includes a water spray ring pipe, which is installed on the top side of the conveyor box, a transfer box is installed on the water spray ring pipe, and a water inlet pipe is installed on the transfer box.

2. A scraper conveyor for coal conveying according to claim 1, characterized in that, The scraper side cleaning device also includes two drive cylinders, which are rotatably mounted on the two cleaning side boxes respectively; Cleaning gears are installed on one side of each of the two driving cylinders. Two follower racks are slidably installed on the conveyor box. The two follower racks mesh with the two cleaning gears. A rotary pusher is installed on each of the two drive shafts. The rotary pusher rotates to push the follower racks to move. A reciprocating spring connects the follower racks to the conveyor box. The driving cylinder has a driving arc groove, and the inner wall of the transverse cleaning sleeve is equipped with a driving adapter block, which is movably installed in the driving arc groove.

3. A scraper conveyor for coal conveying according to claim 2, characterized in that, A positioning bracket is installed on the bottom side of the return rotating frame, and a rotating seat is installed on the cleaning push plate. The positioning bracket is rotatably mounted on the rotating seat. A drive bar is installed on the cleaning push plate, a telescopic bracket is movably installed on the bottom side of the return rotating frame, a drive shaft is rotatably installed on the telescopic bracket, the drive shaft is movably installed inside the drive bar, and a telescopic spring is installed between the return rotating frame and the telescopic bracket.

4. A scraper conveyor for coal conveying according to claim 3, characterized in that, The transverse cleaning sleeve is rotatably mounted with a transfer bracket, the transfer bracket is mounted with a transfer support, and the return rotating frame is rotatably mounted on the transfer support. The transverse cleaning sleeve has an installation cavity, in which an installation shaft is rotatably installed. The installation shaft is mounted on the adapter bracket, and a rotary torsion spring is mounted on the installation shaft. The rotary torsion spring is mounted on the inner wall of the installation cavity.

5. A scraper conveyor for coal conveying according to claim 4, characterized in that, The adapter support is provided with a torsion groove, and a torsion shaft is rotatably installed in the torsion groove. The return frame is installed on the torsion shaft. A push plate is mounted at the top of the torsion shaft, and a push wheel is rotatably mounted on the push plate.

6. A scraper conveyor for coal conveying according to claim 5, characterized in that, A torsion spring is installed on the torsion shaft, and the torsion spring is installed on the inner wall of the torsion groove.

7. A scraper conveyor for coal conveying according to claim 1, characterized in that, The intermediate synchronous cleaning device also includes two cleaning lifting frames. Lifting sliding holes are provided on both sides of the conveyor box. Enclosed sliding plates are slidably installed in the two lifting sliding holes. The two cleaning lifting frames are respectively installed on the two enclosed sliding plates. The two intermediate scrapers are respectively installed on the two enclosed sliding plates. Both ends of the drive shaft are equipped with linkage rods, and linkage sliding shafts are installed on the linkage rods. The cleaning lifting frame has linkage sliding holes, and the linkage sliding shafts are movably installed in the linkage sliding holes.

8. A scraper conveyor for coal conveying according to claim 7, characterized in that, The retraction scraper is equipped with a push-out spring, which is mounted on the inner wall of the intermediate scraper.

9. A scraper conveyor for coal conveying according to claim 1, characterized in that, The overload active cleaning device further includes a feed sealing plate and a water inlet sealing plate, which are rotatably installed in the transfer box and the feed box, respectively. A sliding opening and closing push frame is installed on one side of the conveyor box. Two transition rods are movably installed on the opening and closing push frame. The two transition rods are respectively installed on the feed sealing plate and the water inlet sealing plate. Both of the two adapter rods are equipped with adapter shafts, which are respectively installed on the feed sealing plate and the water inlet sealing plate. The other two adapter shafts are movably installed inside the opening and closing push frame.

10. A scraper conveyor for coal conveying according to claim 9, characterized in that, Support rods are installed at the four corners of the bottom side of the conveyor box. Support seats are sleeved on the support rods, and support springs connect the support rods and the support seats.

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