Scraper conveyor for ultra-long working face

Abstract

The present application relates to a kind of super-long working face scraper conveyor, including rack, conveying assembly, scraper assembly and chute, conveying assembly is arranged on rack, scraper assembly is arranged on chain, conveying assembly moves scraper assembly by chain, chute includes tank body and fixed plate, tank body is arranged on rack, tank body is opposite with scraper assembly, tank body includes conveying section and arc section, both ends of conveying section are equipped with arc section, arc section has smooth connecting surface between conveying section, conveying section is equipped with fixed plate, fixed plate is located in the inside of chain and supports chain.The scraper conveyor of the present application has the advantages of stable chain tensioning effect, stable coal pushing effect of scraper, etc., solves the problem of chain sagging caused by long-distance coal conveying, which affects the pushing effect of scraper on coal.

Description

Technical Field

[0001] This invention relates to the field of scraper conveyor technology, and more specifically to a scraper conveyor with an ultra-long working face. Background Technology

[0002] The working principle of a scraper conveyor is to use an open chute as a support for coal, gangue, or other materials, and to fix scrapers to a chain (forming a scraper chain) as a 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 runs in a stepless closed loop around the sprocket, completing the material conveying. When using a scraper conveyor to transport coal over long distances, the chain length increases, and under the influence of gravity, the chain is prone to sagging. This causes some scrapers to slide at an angle within the chute. When the scrapers push against the mine, the coal creates resistance at the bottom of the scrapers, which can cause further deflection and make it difficult to effectively push some coal. Summary of the Invention

[0003] The present invention aims to at least partially solve one of the technical problems in the related art.

[0004] Therefore, embodiments of the present invention propose a scraper conveyor with an ultra-long working face, which has the advantages of stable chain tension and stable scraper pushing effect on coal mine, and solves the problem that long-distance coal mine transportation is prone to chain sagging and affects the scraper pushing effect on coal mine.

[0005] According to an embodiment of the present invention, a scraper conveyor with an ultra-long working face includes a frame, a conveying assembly, a scraper assembly, and a chute. The conveying assembly is mounted on the frame and includes a drive shaft, a driven shaft, and a chain. The drive shaft is located at one end of the frame in a first direction, and the driven shaft is located at the other end of the frame in the first direction. The chain is meshed with the outer sides of both the drive shaft and the driven shaft. The scraper assembly is mounted on the chain, and the conveying assembly drives the scraper assembly to move via the chain. The chute includes a trough body and a fixing plate. The trough body is mounted on the frame and is opposite to the scraper assembly. The trough body includes a conveying section and an arc-shaped section. The arc-shaped section is provided at both ends of the conveying section, and the arc-shaped section has a smooth connecting surface with the conveying section. The fixing plate is provided in the conveying section and is located inside the chain and supports the chain.

[0006] In this embodiment of the scraper conveyor, the fixed plate supports and lifts the chain, preventing the upper section of the chain from sagging under gravity. This prevents the scraper assembly from tilting relative to the chute, thus ensuring the scraper's pushing effect on the coal and mineral materials. The arc-shaped section of the chute and the conveying section have a smooth connecting surface, and the transition between them is smooth. This prevents the scraper assembly from getting stuck in the chute as it moves from the upper to the lower side of the conveying section or vice versa, ensuring the scraper assembly can operate normally with the chain and effectively convey the coal and mineral materials.

[0007] In some embodiments, the scraper conveyor with an extra-long working surface further includes a tensioning assembly, the tensioning assembly including a telescopic drive and a slide, the telescopic drive being disposed in the conveying section, the telescopic drive having a telescopic end, one side of the slide being connected to the telescopic end, the driven shaft being rotatably disposed on the other side of the slide, and the slide being slidably disposed at the other end of the frame.

[0008] In some embodiments, the tensioning assembly further includes a limiting tooth, a first horizontal plate, a second horizontal plate, a plurality of sliders, a guide rod, and a first elastic element. The limiting tooth is disposed on the slide block, and one side of the limiting tooth in the first direction is a first inclined surface, and the other side of the limiting tooth in the first direction is a first vertical surface, the first vertical surface facing the telescopic drive member. The first horizontal plate and the second horizontal plate are both disposed on the other side of the frame, the first horizontal plate being located between the second horizontal plate and the limiting tooth. The first horizontal plate has a plurality of first sliding holes evenly arranged along the first direction, and the second horizontal plate has a plurality of first sliding holes evenly arranged along the first direction. A plurality of second sliding holes are evenly arranged in a first direction, and the plurality of second sliding holes correspond one-to-one with the plurality of first sliding holes in a second direction, which is perpendicular to the first direction. A plurality of sliders correspond one-to-one with the plurality of first sliding holes, and the sliders are slidably disposed in the first sliding holes. One side of the slider in the first direction is a second inclined surface, and the other side of the slider in the first direction is a second vertical surface. The second vertical surface abuts against the first vertical surface. The guide rod is slidably disposed in the second sliding hole and is connected to the slider. The first elastic element connects the second horizontal plate and the slider.

[0009] In some embodiments, the scraper conveyor with an extra-long working face further includes a feeding assembly, which includes a support frame, a hopper, a guide box, a pusher plate, and a reciprocating transmission component. One side of the support frame is fixedly connected to the frame. The guide box has the hopper on one side in the first direction and a discharge port on the other side in the first direction. The hopper and the discharge port are spaced apart in the first direction. The pusher plate has a blocking section and a pushing section, one end of which is connected to the pushing section. The pusher plate is movably disposed in the guide box between the feeding position and the pushing position along the first direction. In the feeding position, the pusher section is adjacent to or abuts one side of the guide box so that the hopper communicates with the guide box. In the pushing position, the pusher section is located at the discharge port to push the material in the guide box out of the discharge port. The scraper assembly is offset from the discharge port. The reciprocating transmission member connects the drive shaft and the pusher plate to drive the pusher plate to move between the feeding position and the pushing position.

[0010] In some embodiments, a first clearance hole is provided on one side of the guide box, and the sealing section passes through the first clearance hole; the reciprocating transmission component includes a turntable, a transmission belt, a drive column, and a sliding column. The turntable is rotatably mounted on the support frame and is spaced apart from the guide box. The transmission belt drives the drive shaft and the turntable. The drive column is eccentrically mounted on the turntable. The sliding column extends along a second direction, which is perpendicular to the first direction. The sliding column is provided with a sliding groove, and the drive column is slidably mounted in the sliding groove. The sliding column is connected to the sealing section.

[0011] In some embodiments, the reciprocating transmission component further includes a connecting plate and a connecting rod. The connecting plate is connected to the other end of the sealing section. The connecting plate is located outside the guide box. The connecting rod connects the connecting plate and the sliding column. The support frame includes a support portion, a connecting portion, and a fixing portion. The connecting portion connects the support portion and the fixing portion. The support portion and the fixing portion are spaced apart. The support portion is disposed on the frame. The turntable is disposed on the support portion. The fixing portion is fixedly connected to the guide box.

[0012] In some embodiments, the scraper assembly includes a first scraper, a second scraper, a protective cover, a connecting post, and a second elastic member. The first scraper is disposed on the chain and has a gap with the groove. The first scraper has a cavity, a first through hole, and a receiving groove. One side of the cavity communicates with the receiving groove through the first through hole, and the receiving groove faces the groove. The first scraper has a second through hole on the other side of the cavity. The second scraper is slidably disposed in the receiving groove. The protective cover is connected to one end of the connecting post, and the connecting post passes through the first through hole and the second through hole. The other end of the connecting post is connected to the second scraper. The second elastic member is disposed in the cavity and connects the first scraper and the connecting post to form a force on the connecting post toward the protective cover.

[0013] In some embodiments, the scraper assembly further includes a pressure plate and a third elastic member, the pressure plate being connected to the other end of the connecting post, and the third elastic member connecting the pressure plate and the second scraper.

[0014] In some embodiments, the scraper assembly further includes a washer ring disposed on the connecting post and located within the cavity, and the second elastic member connects the washer ring and the first scraper.

[0015] In some embodiments, the scraper conveyor with an extra-long working face further includes an extrusion assembly, the extrusion assembly including arch frames and pressure rails, the arch frames being multiple and spaced apart on the frame, the pressure rails being disposed under the arch frames and abutting against the protective cover. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of a scraper conveyor with an ultra-long working surface proposed in this invention;

[0017] Figure 2 This is a schematic diagram of the frame, chute, and conveyor chain assembly of a scraper conveyor with an ultra-long working surface proposed in this invention;

[0018] Figure 3 This is a schematic diagram of the tensioning assembly structure of a scraper conveyor with an ultra-long working surface proposed in this invention;

[0019] Figure 4 This is a schematic diagram of the tensioning assembly of a scraper conveyor with an ultra-long working surface proposed in this invention;

[0020] Figure 5 This is a schematic diagram of the feeding assembly of a scraper conveyor with an ultra-long working surface proposed in this invention;

[0021] Figure 6 This is a schematic cross-sectional view of the feeding assembly of a scraper conveyor with an ultra-long working surface proposed in this invention.

[0022] Figure 7 This is a three-dimensional structural diagram of the feeding assembly and transmission assembly of a scraper conveyor with an ultra-long working surface proposed in this invention.

[0023] Figure 8 This is a schematic diagram of the reciprocating transmission component of a scraper conveyor with an ultra-long working surface proposed in this invention.

[0024] Figure 9 This is a schematic diagram of the scraper assembly of a scraper conveyor with an ultra-long working surface proposed in this invention.

[0025] Figure 10 This is a schematic diagram of the scraper assembly and extrusion assembly of a scraper conveyor with an ultra-long working surface proposed in this invention.

[0026] Figure label:

[0027] 100. Scraper conveyor

[0028] 1. Frame; 11. Front frame; 12. Rear frame; 13. Clearance slot;

[0029] 2. Conveying assembly; 21. Drive shaft; 22. Driven shaft; 23. Chain; 24. Drive motor;

[0030] 3. Scraper assembly, 31. First scraper, 311. Cavity, 312. Receiving groove, 32. Second scraper, 33. Protective cover, 34. Connecting column, 35. Second elastic element, 36. Pressure plate, 37. Third elastic element, 38. Washer ring, 39. Mounting base;

[0031] 4. Chute; 41. Tank body; 411. Conveying section; 412. Arc-shaped section; 42. Fixed plate; 43. Support plate.

[0032] 5. Tensioning assembly; 51. Telescopic drive component; 52. Slide; 521. First plate; 522. Second plate; 523. Third plate; 53. Limiting tooth; 54. First horizontal plate; 55. Second horizontal plate; 56. Slider; 57. Guide rod; 58. First elastic element.

[0033] 6. Feeding assembly; 61. Support frame; 611. Support part; 612. Connecting part; 613. Fixing part; 62. Hopper; 63. Guide box; 631. Discharge port; 632. First clearance hole; 633. Second clearance hole; 64. Push plate; 641. Blocking section; 642. Pushing section; 65. Reciprocating transmission component; 651. Turntable; 652. Transmission belt; 653. Drive column; 654. Sliding column; 655. Connecting plate; 656. Connecting rod; 66. First inclined plate; 67. Second inclined plate; 68. Reinforcing rod;

[0034] 7. Extrusion assembly, 71. Arch frame, 72. Pressure rail. Detailed Implementation

[0035] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0036] The following is a reference to the appendix. Figures 1 to 10 The scraper conveyor 100 with an extra-long working surface according to an embodiment of the present invention is described in detail.

[0037] The scraper conveyor 100 with an extra-long working surface according to an embodiment of the present invention includes a frame 1, a conveying assembly 2, a scraper assembly 3, and a chute 4. The conveying assembly 2 is mounted on the frame 1 and includes a drive shaft 21, a driven shaft 22, and a chain 23. The drive shaft 21 is positioned on the frame 1 in a first direction (e.g., in a first direction). Figure 1 The driven shaft 22 is located at one end of the frame 1 in the left-right direction, and the driven shaft 22 is located at the other end of the frame 1 in the first direction. The outer sides of the drive shaft 21 and the driven shaft 22 are both meshed with the chain 23. The scraper assembly 3 is located on the chain 23. The conveying assembly 2 drives the scraper assembly 3 to move through the chain 23. The chute 4 includes a trough body 41 and a fixing plate 42. The trough body 41 is located on the frame 1 and is opposite to the scraper assembly 3. The trough body 41 includes a conveying section 411 and an arc section 412. The two ends of the conveying section 411 are provided with arc sections 412. The arc section 412 and the conveying section 411 have a smooth connecting surface. The conveying section 411 is provided with a fixing plate 42. The fixing plate 42 is located inside the chain 23 and supports the chain 23.

[0038] The scraper conveyor 100 with an extra-long working surface according to an embodiment of the present invention, in use, such as Figure 1 As shown, the first direction is the same as the left and right directions. One end of the frame 1 is the left end of the frame 1, and the other end of the frame 1 is the right end of the frame 1. Coal and mineral materials fall onto the chute 4. The conveying assembly 2 drives the chain 23 to rotate clockwise, which in turn drives the scraper assembly 3 to rotate clockwise. The scraper assembly 3 scrapes the coal and mineral materials on the chute 4 and conveys the coal and mineral materials from the left side to the right side of the frame 1, thereby realizing the conveying of coal and mineral materials.

[0039] In the scraper conveyor 100 of this embodiment, fixed plates 42 are provided on both sides of the conveying section 411 of the trough 41. During the clockwise rotation of the chain 23, the upper section of the chain 23 is located on the fixed plates 42. The fixed plates 42 provide support and lift for the chain 23, preventing the upper section of the chain 23 from sagging under gravity, thereby preventing the scraper assembly 3 from tilting relative to the chute 4 and ensuring the pushing effect of the scraper on the coal and mineral materials. This is especially suitable for scraper conveyors with ultra-long conveying distances, as the support of the upper part of the chain 23 by the fixed plates 42 prevents the chain 23 from sagging. The arc-shaped section 412 of the trough 41 has a smooth connecting surface with the conveying section 411, and the transition between the conveying section 411 and the arc-shaped section 412 is smooth. This prevents the scraper assembly 3 from getting stuck with the trough 41 during the process of moving from the upper side of the conveying section 411 to the lower side of the conveying section 411 or from the lower side of the conveying section 411 to the upper side of the conveying section 411. This ensures that the scraper assembly 3 can run normally with the chain 23 and ensures the pushing effect of the scraper assembly 3 on the coal and mineral materials, thereby ensuring the effective conveying of coal and mineral materials by the scraper conveyor 100.

[0040] Specifically, such as Figure 1 and Figure 2 As shown, the frame 1 includes a front frame 11 and a rear frame 12, and the chute 4 is located between the front frame 11 and the rear frame 12.

[0041] like Figure 2 As shown, the chute 4 includes a trough body 41, a fixing plate 42, and a support plate 43. The trough body 41 has a U-shaped cross-section, that is, the cross-section of the conveying section 411 is U-shaped, and the cross-section of the arc section 412 is U-shaped. The coal and mineral materials are pushed by the scraper assembly within the U-shaped trough body 41. The support plate 43 is attached to the lower side of the conveying section 411, and the front and rear sides of the support plate 43 are welded to the front frame 11 and the rear frame 12, respectively, to achieve a fixed connection between the trough body 41 and the frame 1. Fixing plates 42 are welded to both the front and rear sides of the conveying section 411. The fixing plate 42 located on the front side of the conveying section 411 is welded to the front frame 11, and the fixing plate 42 located on the rear side of the conveying section 411 is welded to the rear frame 12.

[0042] The lengths of the fixed plate 42 and the conveying section 411 are equal in the first direction.

[0043] Specifically, the conveying assembly 2 also includes a drive motor 24, which is located at one end (left end) of the frame 1. The output shaft of the drive motor 24 is connected to the drive shaft 21. When the drive motor 24 is turned on, it drives the drive shaft 21 to rotate, which in turn drives the chain 23 to rotate. The chain 23 then drives the scraper assembly 3 to move, thereby pushing the coal and mineral material on the trough 41 from the left end to the right end of the frame 1.

[0044] like Figure 3 and Figure 4 As shown, the scraper conveyor 100 with an extra-long working surface in this embodiment of the invention further includes a tensioning assembly 5. The tensioning assembly 5 includes a telescopic drive member 51 and a slide 52. The telescopic drive member 51 is disposed on the conveying section 411 and has a telescopic end. One side (left side) of the slide 52 is connected to the telescopic end, and the driven shaft is rotatably disposed on the other side (right side) of the slide 52. The slide 52 is slidably disposed on the other end (right end) of the frame 1. When the chain 23 needs to be tensioned, the telescopic drive member 51 extends, and the telescopic end drives the slide 52 to move to the right, thereby driving the driven shaft to move to the right, thus achieving the tensioning of the chain 23.

[0045] Specifically, the telescopic drive component 51 is a hydraulic cylinder. The slide 52 is U-shaped and includes a first plate 521, a second plate 522, and a third plate 523 connected in sequence. The second plate 522 is connected to the telescopic end of the telescopic drive component 51. Both the right end of the front frame and the right end of the rear frame are provided with clearance grooves 13. The second plate 522 is slidably disposed in the clearance grooves 13. The first plate 521 is adjacent to or fits against the front frame, and the third plate 523 is adjacent to or fits against the rear frame. The slide 52 is symmetrical front and back. Both the front and rear sides of the slide 52 are slidably connected to the frame 1, which helps to ensure the smoothness of the slide 52 sliding relative to the frame 1, avoids the slide 52 from tilting, and also improves the stability of the connection between the slide 52 and the frame 1. This helps to ensure the symmetry of the chains 23 on the front and rear sides, thereby helping to ensure that the scraper assembly 3 does not deflect and effectively pushes the coal and mineral materials.

[0046] The tensioning assembly 5 further includes a limiting tooth 53, a first horizontal plate 54, a second horizontal plate 55, multiple sliders 56, a guide rod 57, and a first elastic element 58. The limiting tooth 53 is located on the slide block 52. One side (right side) of the limiting tooth 53 in the first direction is a first inclined surface, and the other side (left side) of the limiting tooth 53 in the first direction is a first vertical surface, with the first vertical surface facing the telescopic drive element 51. Figure 4As shown, both the first plate 521 and the third plate 523 have limiting teeth 53 at their lower ends. The first horizontal plate 54 and the second horizontal plate 55 are located on the other side (right side) of the frame 1. The first horizontal plate 54 is positioned between the second horizontal plate 55 and the limiting teeth 53. The first horizontal plate 54 has multiple first sliding holes evenly arranged along a first direction, and the second horizontal plate 55 has multiple second sliding holes evenly arranged along the first direction. The multiple second sliding holes correspond one-to-one with the multiple first sliding holes in a second direction, which is perpendicular to the first direction. Specifically, the second direction is the same as the up-down direction. Multiple sliders 56 correspond one-to-one with the multiple first sliding holes, and the sliders 56 are slidably disposed within the first sliding holes. One side (left side) of the slider 56 in the first direction is a second inclined surface, and the other side (right side) of the slider 56 in the first direction is a second vertical surface. The second vertical surface abuts against the first vertical surface. A guide rod 57 is slidably disposed within the second sliding hole, and the guide rod 57 connects to the slider 56. A first elastic element 58 connects the second horizontal plate 55 and the slider 56.

[0047] When it is necessary to tension the chain 23, the telescopic drive member 51 extends, and the telescopic end drives the slide 52 to move to the right. The limiting tooth 53 moves to the right synchronously with the slide 52. The first inclined surface of the limiting tooth 53 presses against the second inclined surface of the slider 56, thereby causing the slider 56 and the guide rod 57 to move downward. The first elastic member 58 is compressed and contracted. When the pressed slider 56 is misaligned with the limiting tooth 53, the pressed slider 56 moves upward and resets under the elastic force of the first elastic member 58, and fits against the left side of the limiting tooth 53, so that the second vertical surface of the slider 56 fits against the first vertical surface of the limiting tooth 53, thereby limiting the limiting tooth 53 and preventing the limiting tooth 53 from sliding to the left. This allows the slide 52 to remain stable after moving to the right to tension the chain 23, avoiding the slide 52 from moving a long distance to the left, thereby further ensuring the stability of the tensioning effect of the chain 23.

[0048] It should be noted that when the slide block 52 moves to a certain position and the limiting tooth 53 and the slider 56 are not completely misaligned—that is, when the slider 56 is still being pressed downwards by the limiting tooth 53, the slider 56 is not fully reset, and the first vertical surface of the limiting tooth 53 is not in contact with the second vertical surface of the slider 56—the slide block 52 is allowed to slide to the left by a distance less than the size of the slider 56 (the size of the slider 56 in the left-right direction). Under the elastic force of the first elastic element 58, the slider 56 moves upwards and blocks the left side of the limiting tooth 53, causing the first vertical surface of the limiting tooth 53 to contact the second vertical surface of the slider 56, thus limiting the left side of the limiting tooth 53. Because the chain 23 is relatively long, the leftward movement distance of the slide block 52 is less than the size of the slider 56 in the left-right direction; the short movement distance still ensures the tension effect of the chain 23.

[0049] Specifically, the guide rod 57 includes a rod body and a limiting protrusion. The upper end of the rod body is connected to the slider 56, and the lower end of the rod body is provided with a limiting protrusion located on the lower side of the second horizontal plate 55. The limiting protrusion limits the upward movement of the guide rod 57, preventing the guide rod 57 from dislodging from the second horizontal plate 55 and ensuring the stability of the slider 56's up-and-down movement.

[0050] Specifically, the first elastic element 58 is a first spring, which is sleeved on the rod body of the guide rod 57. The upper end of the first spring is connected to the slider 56, and the lower end of the first spring abuts against the second horizontal plate 55.

[0051] like Figures 5 to 8 As shown, the scraper conveyor 100 of this embodiment further includes a feeding assembly 6, which includes a support frame 61, a hopper 62, a guide box 63, a pusher plate 64, and a reciprocating transmission component 65. One side of the support frame 61 is fixedly connected to the frame 1. The guide box 63 has a hopper 62 on one side (left side) in the first direction, and a discharge port 631 on the other side (right side) in the first direction. The hopper 62 and the discharge port 631 are spaced apart in the first direction, that is, the hopper 62 and the discharge port 631 are separated by a distance in the left-right direction. The pusher plate 64 has a blocking section 641 and a pushing section 642, one end of which is connected to the pushing section 642. Figure 6 As shown, the right end of the blocking section 641 is connected to the upper end of the pushing section 642, and the lower end of the pushing section 642 abuts against the bottom wall of the guide box 63. The pushing plate 64 is movably disposed in the guide box 63 between the feeding position and the pushing position along a first direction. In the feeding position, the pushing section 642 is adjacent to or abuts against one side (left side) of the guide box 63 so that the hopper 62 communicates with the guide box 63. In the pushing position, the pushing section 642 is located at the discharge port 631 to push the material in the guide box 63 out of the discharge port 631. The scraper assembly 3 is offset from the discharge port 631. The reciprocating transmission member 65 connects the drive shaft 21 and the pushing plate 64 to drive the pushing plate 64 to move between the feeding position and the pushing position.

[0052] At this feeding position, the scraper assembly 3 is offset from the discharge port 631. In other words, at this feeding position, the scraper assembly 3 does not correspond in the vertical direction, and the coal and mineral material does not come into contact with the scraper assembly 3 during the process of falling into the chute 4.

[0053] Coal and mineral materials fall from the hopper 62. When the pusher plate 64 is in the feeding position, it is adjacent to or against the left side of the guide box 63, making the hopper 62 and the guide box 63 connected. The coal and mineral materials fall from the hopper 62 into the guide box 63. The reciprocating transmission component 65 drives the pusher plate 64 from the feeding position to the pushing position, so that the pusher plate 64 moves to the right until the pusher section 642 is located at the discharge port 631. The pusher section 642 pushes the coal and mineral materials in the guide box 63 from the left side of the guide box 63 to the right side discharge port 631, so that the coal and mineral materials fall onto the trough 41. At the same time, as the pusher plate 64 moves to the right, the sealing section 641 gradually seals the through hole between the hopper 62 and the guide box 63. Then, the reciprocating transmission component 65 drives the pusher plate 64 from the pusher position to the feed position, causing the pusher section 642 to move from right to left. At the same time, the blocking section 641 gradually opens the through hole between the hopper 62 and the guide box 63, allowing the coal and mineral materials in the hopper 62 to flow into the guide box 63. In this embodiment of the invention, the scraper conveyor 100 drives the pusher plate 64 to slide back and forth in the guide box 63 via the reciprocating transmission component 65. When the coal and mineral materials in the hopper 62 fall to the left side of the guide box 63, they are intermittently pushed to the right side of the guide box 63 by the pusher plate 64. The coal and mineral materials then fall into the trough 41 through the discharge port 631, thereby realizing the intermittent feeding of coal and mineral materials into the chute 4. This prevents coal and mineral materials from falling when the scraper assembly 3 passes through the discharge port 631, avoiding the impact of falling coal and mineral materials on the scraper assembly from top to bottom, which could cause the scraper to tilt and be damaged.

[0054] A first clearance hole 632 is provided on one side (left side) of the guide box 63, and the sealing section 641 passes through the first clearance hole 632. The reciprocating transmission component 65 includes a turntable 651, a transmission belt 652, a drive column 653, and a sliding column 654. The turntable 651 is rotatably mounted on the support frame 61 and is spaced apart from the guide box 63. The transmission belt 652 drives the drive shaft and the turntable 651. The drive column 653 is eccentrically mounted on the turntable 651. The sliding column 654 extends along the second direction and has a sliding groove that extends along the second direction. The drive column 653 is slidably mounted in the sliding groove and is connected to the sealing section 641. During the process of the drive motor driving the drive shaft to rotate, the drive belt 652 drives the turntable 651 to rotate. The drive column 653 eccentrically set on the turntable 651 rotates with the turntable 651. Since the drive column 653 is located in the groove of the slide column 654, the drive column 653 drives the slide column 654 to move back and forth in the left and right directions, thereby driving the pusher plate 64 to move back and forth in the left and right directions.

[0055] The reciprocating transmission component 65 further includes a connecting plate 655 and a connecting rod 656. The connecting plate 655 is connected to the other end (left end) of the sealing section 641. The connecting plate 655 is located outside the guide box 63. The connecting rod 656 connects the connecting plate 655 and the sliding column 654. In this pushing position, the connecting plate 655 abuts against the guide box 63. The connecting plate 655 can limit the rightward movement of the pushing plate 64, and still achieves the sealing of the hopper 62 and the guide box 63 in this pushing position, preventing coal material from accumulating on the left side of the pushing section 642. Figure 6 As shown, the pusher plate 64 is located at the pusher position.

[0056] A second clearance hole 633 is provided on this side (left side) of the feed box 63. The feeding assembly 6 further includes a reinforcing rod 68, one end (right end) of which is connected to the pushing section 642. The reinforcing rod 68 passes through the second clearance hole 633, and the other end (left end) of which is connected to the connecting plate 655. The reinforcing rod 68 connects the pushing section 642 and the connecting plate 655, enhancing the strength of the pushing plate 64 and improving its resistance when pushing coal and mineral materials, thus ensuring the smoothness of the pushing plate 64 pushing coal and mineral materials to the discharge port 631.

[0057] The support frame 61 includes a support portion 611, a connecting portion 612, and a fixing portion 613. The connecting portion 612 connects the lower end of the support portion 611 and the fixing portion 613. The support portion 611 and the fixing portion 613 are spaced apart. The support portion 611 is mounted on the frame 1, and the turntable 651 is mounted on the support portion 611. The fixing portion 613 is fixedly connected to the guide box 63. The support portion 611 and the fixing portion 613 are spaced apart in the front-rear direction, providing space for the turntable 651, the drive column 653, and the sliding column 654, making the structural layout more compact and reasonable.

[0058] like Figure 9 As shown, in some embodiments, the scraper assembly 3 includes a first scraper 31, a second scraper 32, a protective cover 33, a connecting post 34, and a second elastic element 35. The first scraper 31 is disposed on the chain 23, and the first scraper 31 has a gap with the groove 41. The first scraper 31 is provided with a cavity 311, a first through hole, and a receiving groove 312. One side (lower side) of the cavity 311 is connected to the receiving groove 312 through the first through hole. The receiving groove 312 faces the groove 41. The first scraper 31 is provided with a second through hole on the other side (upper side) of the cavity 311. The second scraper 32 is slidably disposed in the receiving groove 312. The protective cover 33 is connected to one end (upper end) of the connecting post 34. The connecting post 34 passes through the first through hole and the second through hole. The other end (lower end) of the connecting post 34 is connected to the second scraper 32. The second elastic member 35 is disposed in the cavity 311. The second elastic member 35 connects the first scraper 31 and the connecting post 34 to form a force on the connecting post 34 toward the protective cover 33.

[0059] The first scraper 31 is provided with mounting seats 39 on both the front and rear sides, and the chains 23 on both the front and rear sides are provided with drag seats. There are multiple drag seats, which are arranged at equal intervals on the chains 23. The mounting seats 39 are fixedly installed on the support by bolts, so as to realize the fixed connection between the first scraper 31 and the two chains 23, thereby suppressing the first scraper 31 from deflecting relative to the chains 23.

[0060] The elasticity of the second elastic element 35 causes the connecting column 34 and the pressure plate 36 to tend to move upward, placing the second scraper 32 inside the receiving groove 312. Protective covers 33 are fixedly installed on the tops of the two connecting columns 34, and these covers 33 are fitted onto the top of the first scraper 31, with the top of the protective cover 33 having an arc-shaped surface. When the scraper assembly 3 moves below the guide box 63, the guide box 63 presses against the protective cover 33, causing the protective cover 33 and the connecting column 34 to move downward relative to the first scraper 31, thereby causing the second scraper 32 to move downward, so that the lower end of the second scraper 32 adheres to the groove 41, and the second elastic element 35 is compressed and contracted. When the scraper assembly 3 passes through the discharge port 631 of the guide box 63, the discharge port 631 has space that allows the protective cover 33 to move upward. The dimension of the discharge port 631 in the front-to-back direction is larger than the dimension of the protective cover 33 in the front-to-back direction. That is, the guide box 63 does not interfere with the protective cover 33 at the position of the discharge port 631. Therefore, during the process of passing through the discharge port 631, the protective cover 33 is not squeezed by the guide box 63. Under the action of the elastic force of the second elastic member 35, the second elastic member 35 forms an upward force on the protective cover 33, which drives the second scraper 32 and the protective cover 33 to move upward and back. The second scraper 32 is retracted into the receiving groove 312, and the lower end of the second scraper 32 is not lower than the lower end of the first scraper 31. Thus, there is a gap between the lower end of the scraper assembly 3 (that is, the lower end of the second scraper 32) and the trough 41. After the scraper assembly 3 scrapes the trough 41 below the discharge port 631, a thin layer of coal and mineral material can be left on the trough 41 below the discharge port 631. The coal and mineral material layer can play a certain role in buffering and shock absorption, so that when the coal and mineral material falls from the discharge port 631 onto the trough 41, it prevents the coal and mineral material from directly impacting the trough 41 and causing deformation of the trough 41.

[0061] The scraper assembly 3 further includes a pressure plate 36 and a third elastic element 37. The pressure plate 36 is connected to the other end (lower end) of the connecting column 34, and the third elastic element 37 connects the pressure plate 36 and the second scraper 32. The pressure plate 36 can limit the upward movement of the connecting column 34. The third elastic element 37 allows the second scraper 32 to have a certain amount of room for movement and positional variation relative to the pressure plate 36. At the same time, the elastic force of the third elastic element 37 can increase the squeezing force of the second scraper 32 on the trough 41, thereby improving the pushing effect of the scraper assembly 3 on the coal and mineral materials.

[0062] The scraper assembly 3 further includes a washer 38, which is disposed on the connecting post 34 and located within the cavity 311. A second elastic element 35 connects the washer 38 and the first scraper 31. The second elastic element 35 is a second spring, which is sleeved on the connecting post 34. The lower end of the second spring abuts against the wall of the cavity 311 of the first scraper 31, and the upper end of the second spring abuts against the connecting washer 38. The connecting washer 38 facilitates the connection between the upper end of the second spring and the connecting post 34, facilitates the transmission of force between the second spring and the connecting post 34, and ensures the effective transmission of the spring force.

[0063] like Figures 5 to 7 As shown, the feeding assembly 6 further includes a first inclined plate 66 and a second inclined plate 67. The first inclined plate 66 is located at the left end of the guide box 63. The height of the lower side of the first inclined plate 66 gradually decreases, that is, the left side of the lower side of the first inclined plate 66 is higher and the right side is lower. Thus, as the scraper assembly 3 moves from the left side to the right side of the guide box 63, the lower side of the first inclined plate 66 abuts against the protective cover 33 of the scraper assembly 3 and gradually presses the protective cover 33 downward, so that the protective cover 33 and the scraper assembly 3 can move smoothly to the lower side of the guide box 63. The second inclined plate 67 is disposed on the wall of the guide box 63 at the discharge port 631. The second inclined plate 67 is located on the right side of the discharge port 631. The second inclined plate 67 is a triangular plate, and its right side is in contact with the right side wall of the guide box 63. The height of the lower side of the second inclined plate 67 gradually decreases, with the left side higher and the right side lower. Thus, as the scraper assembly 3 moves from the left side to the right side of the discharge port 631, the lower side of the second inclined plate 67 abuts against the protective cover 33 of the scraper assembly 3 and gradually presses the protective cover 33 downward, allowing the protective cover 33 and the scraper assembly 3 to move smoothly to the right side of the guide box 63. The distance between the left side of the second inclined plate 67 and the right side wall of the guide box 63 gradually increases from top to bottom. Thus, as the pusher plate 64 pushes the coal and mineral materials out of the discharge port 631, the left side of the second inclined plate 67 can guide the falling material and prevent the material from accumulating on the left side of the second inclined plate.

[0064] like Figure 10 As shown, the scraper conveyor 100 of this embodiment further includes an extrusion assembly 7. The extrusion assembly 7 includes an arch frame 71 and a pressure rail 72. Multiple arch frames 71 are spaced apart on the frame 1. The pressure rail 72 is located below the arch frames 71 and abuts against the protective cover 33. The pressure rail 72 is strip-shaped. After the scraper assembly 3 disengages from the right end of the guide box 63, the pressure rail 72 continues to exert an extrusion force on the protective cover 33, thereby keeping the second scraper 32 in contact with the bottom wall of the trough 41. Thus, the scraper assembly 3 pushes the coal and mineral material in the trough 41 to the right.

[0065] In this embodiment of the invention, the scraper conveyor 100 with an extra-long working face, during use, uses the supporting plate 42 to lift the chain 23, preventing the upper part of the chain 23 from sagging under gravity. The extension of the hydraulic cylinder output end drives the slide 52 to move to the right, thereby driving the driven shaft 22 to move to the right, tensioning the chain 23 and ensuring that the first scraper 31 moves vertically within the conveying section 411 of the trough 41 to push the coal and mineral materials. When the slide 52 moves to the right, the limiting tooth 53 moves synchronously to the right. The first inclined surface of the limiting tooth 53 presses against the second inclined surface of the slider 56, causing the slider 56 and guide rod 57 to move downwards. The first spring is compressed and contracted. When the slider 56 is misaligned with the limiting tooth 53, the slider 56 moves upwards to reset under the elastic force of the first spring and fits against the first vertical surface on the left side of the limiting tooth 53, preventing the slide 52 from moving a long distance to the left and ensuring a more stable tension effect on the chain 23.

[0066] The drive motor drives the drive shaft 21 to rotate, which in turn drives the chain 23 to rotate clockwise. At the same time, the transmission belt 652 drives the turntable 651 to rotate, and the drive column 653 makes a circular motion. As the drive column 653 slides along the slide groove, it pushes the slide column 654 to move back and forth, thereby driving the pusher plate 64 to move back and forth in the guide box 63. The pusher plate 64 pushes the coal and mineral material that has fallen from the hopper 62 into the left half of the guide box 63 to the right half of the guide box 63, and causes the coal and mineral material to fall into the trough 41 through the discharge port 631.

[0067] During the movement of the scraper assembly 3 following the chain 23, for the movement of the scraper assembly 3 from the left end to the right end of the frame 1: as the scraper assembly 3 moves from the lower side of the arc-shaped section 412 on the left to the upper side, the protective cover 33 is not subjected to downward pressure. The second scraper 32 is located in the receiving groove 312 of the first scraper 31. Both the first scraper 31 and the second scraper 32 have gaps with the trough 41 to prevent the scraper assembly from getting stuck with the trough 41 at the left turn, ensuring that the scraper assembly 3 can move smoothly from the lower side to the upper side of the trough 41. When the scraper assembly 3 moves from the arc-shaped section 412 on the left to the conveying section 411, when the scraper assembly 3 moves to the first inclined plate 66, the first inclined plate 66 presses against the protective cover 33, allowing the scraper assembly 3 to move smoothly to the lower side of the guide box 63. When the scraper assembly 3 moves to the discharge port 631, under the elastic force of the second elastic element 35, the protective cover 33 moves upward and the second scraper 32 retracts into the interior of the receiving groove 312. At this time, a gap appears between the bottom of the first scraper 31 and the bottom wall of the trough 41, so that a thin layer of coal mineral material is formed on the trough 41 below the discharge port 631. When the coal mineral material falls from the discharge port 631, it falls on the coal mineral material in the trough 41, avoiding the coal mineral material from directly hitting the trough 41 and causing the trough 41 to deform. When the scraper assembly 3 moves to the second inclined plate 67 on the right side of the discharge port 631, the second inclined plate 67 presses against the protective cover 33, causing the second scraper 32 to extend out of the receiving groove 312. After the scraper assembly 3 moves out from under the guide box 63, it enters under the pressure rail 72, where the pressure rail 72 presses against the protective cover 33, ensuring the pressure between the second scraper 32 and the bottom wall of the trough 41, allowing the first scraper 31 and the second scraper 32 to stably push the coal and mineral materials in the trough 41. When the scraper assembly 3 moves to the right end of the frame 1, the scraper assembly 3 is no longer pressed by the pressure rail 72, the protective cover 33 and the second scraper 32 reset, and the second scraper 32 retracts into the receiving groove 312. The lower ends of the second scraper 32 and the first scraper 31 both have gaps with the right-side arc section 412, preventing the scraper assembly 3 (mainly the first and second scrapers) from getting stuck with the trough 41 at the right-side bend, which would affect the normal use of the scraper assembly 3.

[0068] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to 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, they should not be construed as limitations on this invention.

[0069] Furthermore, 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 technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0070] 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, an electrical connection, or a connection that allows communication between them; 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, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0071] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0072] In this invention, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the 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.

[0073] 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 changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A scraper conveyor (100) with an ultra-long working surface, characterized in that, include: Rack (1); A conveying assembly (2) is mounted on the frame (1). The conveying assembly (2) includes a drive shaft (21), a driven shaft (22), and a chain (23). The drive shaft (21) is located at one end of the frame (1) in a first direction, and the driven shaft (22) is located at the other end of the frame (1) in the first direction. The chain (23) is meshed with the outer sides of both the drive shaft (21) and the driven shaft (22). Scraper assembly (3), the scraper assembly (3) is mounted on the chain (23), and the conveying assembly (2) drives the scraper assembly (3) to move through the chain (23); A chute (4) includes a trough body (41) and a fixing plate (42). The trough body (41) is mounted on the frame (1) and is opposite to the scraper assembly (3). The trough body (41) includes a conveying section (411) and an arc-shaped section (412). The arc-shaped section (412) is provided at both ends of the conveying section (411). The arc-shaped section (412) and the conveying section (411) have a smooth connecting surface. The conveying section (411) is provided with the fixing plate (42). The fixing plate (42) is located inside the chain (23) and supports the chain (23). Tensioning assembly (5), which includes telescopic drive (51), slide (52), limiting tooth (53), first horizontal plate (54), second horizontal plate (55), multiple sliders (56), guide rod (57) and first elastic element (58). The telescopic drive (51) is provided in the conveying section (411), and the telescopic drive (51) has a telescopic end; One side of the slide (52) is connected to the telescopic end, the driven shaft is rotatably disposed on the other side of the slide (52), and the slide (52) is slidably disposed on the other end of the frame (1); The limiting tooth (53) is provided on the slide (52). The limiting tooth (53) has a first inclined surface on one side in the first direction and a first vertical surface on the other side in the first direction. The first vertical surface faces the telescopic drive member (51). The first horizontal plate (54) and the second horizontal plate (55) are both provided on the other side of the frame (1). The first horizontal plate (54) is located between the second horizontal plate (55) and the limiting tooth (53). The first horizontal plate (54) has a plurality of first sliding holes evenly arranged along the first direction. The second horizontal plate (55) has a plurality of second sliding holes evenly arranged along the first direction. The plurality of second sliding holes correspond one-to-one with the plurality of first sliding holes in the second direction. The second direction is perpendicular to the first direction. The multiple sliders (56) correspond one-to-one with the multiple first sliding holes and the sliders (56) are slidably disposed in the first sliding holes. One side of the slider (56) in the first direction is a second inclined surface, and the other side of the slider (56) in the first direction is a second vertical surface. The second vertical surface abuts against the first vertical surface. The guide rod (57) is slidably disposed within the second sliding hole, and the guide rod (57) is connected to the slider (56); and The first elastic element (58) connects the second horizontal plate (55) and the slider (56).

2. The scraper conveyor (100) with an ultra-long working surface according to claim 1, characterized in that, The system further includes a feeding assembly (6), which comprises: A support frame (61) is fixedly connected to the frame (1) on one side; The hopper (62) and the guide box (63) are provided on one side of the guide box (63) in the first direction, and the guide box (63) is provided on the other side of the first direction with a discharge port (631). The hopper (62) and the discharge port (631) are spaced apart in the first direction. A pusher plate (64) having a blocking section (641) and a pushing section (642), one end of the blocking section (641) being connected to the pushing section (642), the pusher plate (64) being movably disposed in the guide box (63) along the first direction between a feeding position and a pushing position, in the feeding position, the pushing section (642) being adjacent to or abutting one side of the guide box (63) so that the hopper (62) communicates with the guide box (63), in the pushing position, the pushing section (642) being located at the discharge port (631) to push the material in the guide box (63) out of the discharge port (631), the scraper assembly (3) being offset from the discharge port (631); and A reciprocating drive (65) is connected to the drive shaft (21) and the pusher plate (64) to drive the pusher plate (64) to move between the feeding position and the pushing position.

3. The scraper conveyor (100) with an ultra-long working surface according to claim 2, characterized in that, The material guide box (63) is provided with a first clearance hole (632) on one side, and the sealing section (641) passes through the first clearance hole (632); The reciprocating transmission component (65) includes: A turntable (651) is rotatably mounted on the support frame (61), and the turntable (651) is spaced apart from the guide box (63); A drive belt (652) drives the drive shaft and the turntable (651). A drive column (653) is eccentrically disposed on the turntable (651); A sliding column (654) extends along a second direction perpendicular to the first direction. A sliding groove is provided on the sliding column (654). A driving column (653) is slidably disposed in the sliding groove. The sliding column (654) is connected to the sealing section (641).

4. The scraper conveyor (100) with an ultra-long working surface according to claim 3, characterized in that, The reciprocating transmission component (65) further includes a connecting plate (655) and a connecting rod (656). The connecting plate (655) is connected to the other end of the sealing section (641). The connecting plate (655) is located outside the guide box (63). The connecting rod (656) connects the connecting plate (655) and the sliding column (654). The support frame (61) includes a support portion (611), a connecting portion (612), and a fixing portion (613). The connecting portion (612) connects the support portion (611) and the fixing portion (613). The support portion (611) and the fixing portion (613) are spaced apart. The support portion (611) is mounted on the machine frame (1). The turntable (651) is mounted on the support portion (611). The fixing portion (613) is fixedly connected to the guide box (63).

5. The scraper conveyor (100) with an ultra-long working surface according to claim 2, characterized in that, The scraper assembly (3) includes: The first scraper (31) is disposed on the chain (23). The first scraper (31) has a gap with the groove (41). The first scraper (31) is provided with a cavity (311), a first through hole and a receiving groove (312). One side of the cavity (311) is connected to the receiving groove (312) through the first through hole. The receiving groove (312) faces the groove (41). The first scraper (31) is provided with a second through hole on the other side of the cavity (311). The second scraper (32) is slidably disposed within the receiving groove (312); A protective cover (33) and a connecting post (34), wherein one end of the protective cover (33) is connected to one end of the connecting post (34), the connecting post (34) passes through the first through hole and the second through hole, and the other end of the connecting post (34) is connected to the second scraper (32); and The second elastic element (35) is disposed in the cavity (311) and connects the first scraper (31) and the connecting post (34) to form a force on the connecting post (34) toward the protective cover (33).

6. The scraper conveyor (100) with an ultra-long working surface according to claim 5, characterized in that, The scraper assembly (3) further includes a pressure plate (36) and a third elastic element (37), the pressure plate (36) being connected to the other end of the connecting post (34), and the third elastic element (37) connecting the pressure plate (36) and the second scraper (32).

7. The scraper conveyor (100) with an ultra-long working surface according to claim 5, characterized in that, The scraper assembly (3) further includes a washer (38) disposed on the connecting post (34) and located in the cavity (311). The second elastic member (35) connects the washer (38) and the first scraper (31).

8. The scraper conveyor (100) with an ultra-long working face according to claim 5, characterized in that, Further includes an extrusion assembly (7), which includes an arch frame (71) and a pressure rail (72). The arch frame (71) has multiple arch frames (71) arranged at intervals on the frame (1). The pressure rail (72) is located under the arch frame (71) and abuts against the protective cover (33).

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