Scraper conveyer with ultra-long working face

Abstract

The scraper conveyor comprises a rack, a conveying assembly, a scraper assembly and a chute, the conveying assembly is arranged on the rack, the scraper assembly is arranged on a chain, the conveying assembly drives the scraper assembly to move through the chain, the chute comprises a chute body and a fixing plate, the chute body is arranged on the rack, the chute body is opposite to the scraper assembly, and the fixing plate is arranged on the chute body. The groove body comprises a conveying section and arc-shaped sections, the arc-shaped sections are arranged at the two ends of the conveying section, smooth connecting surfaces are arranged between the arc-shaped sections and the conveying section, the conveying section is provided with a fixing plate, and the fixing plate is located on the inner side of the chain and supports the chain. The scraper conveyor has the advantages that the chain tensioning effect is stable, the coal mine pushing effect of the scraper is stable and the like, and the problem that the pushing effect of the scraper on the coal mine is affected due to the fact that the chain droops easily when the coal mine is conveyed for a long distance is solved.

Description

Technical Field

[0001] The invention relates to the technical field of scraper conveyors, and in particular to a scraper conveyor with an ultra-long working surface. Background Art

[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 the scraper on a chain (forming a scraper chain) as a traction member. When the head transmission unit is started, it drives the sprocket on the head shaft to rotate, causing the scraper chain to circulate and drive the material along the chute until it is unloaded at the head of the machine. The scraper chain bypasses the sprocket in a stepless closed loop to complete the material transportation. When using a scraper conveyor to transport coal over long distances, the chain length increases. Under the action of gravity, it is easy for the chain to sag, causing part of the scraper to slide at an angle in the chute. When the scraper pushes the coal, the coal creates resistance on the bottom of the scraper, which can easily cause the scraper to deflect further, making it difficult to effectively push some coal. Summary of the Invention

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

[0004] To this end, an embodiment of the present invention proposes a scraper conveyor with an ultra-long working surface, which has the advantages of stable chain tensioning effect and stable scraper pushing effect on coal mines, solving the problem that long-distance coal transportation easily causes chain sagging and affects the scraper pushing effect on coal mines.

[0005] According to an embodiment of the present invention, a scraper conveyor with an extra-long working surface includes a frame, a conveying assembly, a scraper assembly and a chute, the conveying assembly is arranged on the frame, the conveying assembly includes a driving shaft, a driven shaft and a chain, the driving shaft is arranged at one end of the frame in the first direction, the driven shaft is arranged at the other end of the frame in the first direction, the outer sides of the driving shaft and the driven shaft are meshed and connected with the chain, the scraper assembly is arranged on the chain, and the conveying assembly drives the scraper assembly to move through the chain, the chute includes a trough body and a fixed plate, the trough body is arranged on the frame, the trough body is opposite to the scraper assembly, the trough body includes a conveying section and an arc section, the arc section is provided at both ends of the conveying section, a smooth connecting surface is provided between the arc section and the conveying section, the conveying section is provided with the fixed plate, and the fixed plate is located on the inner side of the chain and supports the chain.

[0006] In the scraper conveyor of the embodiment of the present invention, the fixed plate provides support and lifting for the chain, preventing the upper section of the chain from sagging under the action of gravity, thereby preventing the scraper assembly from tilting relative to the chute, thereby ensuring the scraper's pushing effect on the coal and mineral materials. The arcuate section of the trough body and the conveying section have a smooth connecting surface, and the transition between the conveying section and the arcuate section is smooth, thereby preventing the scraper assembly from getting stuck with the trough body during the process of moving from the upper side of the conveying section to the lower side of the conveying section or from the lower side of the conveying section to the upper side of the conveying section, thereby ensuring the scraper assembly can operate normally with the chain, ensuring the scraper assembly's pushing effect on the coal and mineral materials, and thus ensuring the effective transportation of the coal and mineral materials by the scraper conveyor.

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

[0008] In some embodiments, the tensioning assembly further includes a limiting tooth, a first transverse plate, a second transverse plate, a plurality of sliders, a guide rod and a first elastic member, the limiting tooth is arranged on the slide seat, one side of the limiting tooth in the first direction is a first inclined surface, the other side of the limiting tooth in the first direction is a first vertical surface, the first vertical surface faces the telescopic driving member, the first transverse plate and the second transverse plate are both arranged on the other side of the frame, the first transverse plate is located between the second transverse plate and the limiting tooth, the first transverse plate is provided with a plurality of first sliding holes evenly arranged along the first direction, the second transverse plate is provided with a plurality of first sliding holes evenly arranged along the first direction A plurality of second sliding holes are evenly arranged in the first direction, and the plurality of second sliding holes correspond one-to-one to the plurality of first sliding holes in the second direction. The second direction is perpendicular to the first direction. The plurality of sliders correspond one-to-one to 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 the first vertical surface. The guide rod is slidably disposed in the second sliding hole. The guide rod is connected to the slider, and the first elastic member is connected to the second horizontal plate and the slider.

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

[0010] In some embodiments, a first avoidance hole is provided on one side of the material guide box, and the blocking section is passed through the first avoidance hole; the reciprocating transmission member includes a turntable, a transmission belt, a driving column and a sliding column, the turntable is rotatably provided on the support frame, the turntable is spaced apart from the material guide box, the transmission belt transmission connects the active shaft and the turntable, the driving column is eccentrically provided on the turntable, the sliding column extends along a second direction, the second direction is perpendicular to the first direction, a sliding groove is provided on the sliding column, the driving column is slidably provided in the sliding groove, and the sliding column is connected to the blocking section.

[0011] In some embodiments, the reciprocating transmission member further includes a connecting plate and a connecting rod, the connecting plate is connected to the other end of the blocking section, the connecting plate is located outside the material guide box, and the connecting rod connects the connecting plate and the sliding column; the support frame includes a support part, a connecting part and a fixing part, the connecting part connects the support part and the fixing part, the support part and the fixing part are spaced apart, the support part is arranged on the frame, the turntable is arranged on the support part, and the fixing part is fixedly connected to the material guide box.

[0012] In some embodiments, the scraper assembly includes a first scraper, a second scraper, a protective cover, a connecting column and a second elastic member, the first scraper is arranged on the chain, the first scraper has a gap with the trough body, the first scraper is provided with a cavity, a first through hole and a receiving groove, one side of the cavity is connected to the receiving groove through the first through hole, the receiving groove faces the trough body, and the first scraper is provided with a second through hole on the other side of the cavity; the second scraper is slidably arranged in the receiving groove; the protective cover is connected to one end of the connecting column, the connecting column is passed through the first through hole and the second through hole, and the other end of the connecting column is connected to the second scraper; the second elastic member is provided in the cavity, and the second elastic member connects the first scraper and the connecting column to form a force on the connecting column toward the protective cover.

[0013] In some embodiments, the scraper assembly further includes a pressing plate and a third elastic member, the pressing plate is connected to the other end of the connecting column, and the third elastic member connects the pressing plate and the second scraper.

[0014] In some embodiments, the scraper assembly further includes a gasket, which is provided on the connecting column and located in the cavity, and the second elastic member is used to connect the gasket and the first scraper.

[0015] In some embodiments, the scraper conveyor with an extra-long working surface further includes an extrusion assembly, which includes an arch frame and a pressure rail. There are multiple arch frames, and the multiple arch frames are arranged at intervals on the frame. The pressure rail is arranged under the arch frame, and the pressure rail abuts the protective cover. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a structural schematic diagram of a scraper conveyor with an extra-long working surface proposed by the present invention;

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

[0018] Figure 3 This is a schematic structural diagram of a tensioning assembly of a scraper conveyor with an extra-long working surface proposed by the present invention;

[0019] Figure 4 This is a structural schematic diagram of a tensioning assembly of a scraper conveyor with an extra-long working surface proposed by the present invention;

[0020] Figure 5 This is a structural schematic diagram of a feeding assembly of a scraper conveyor with an extra-long working surface proposed by the present invention;

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

[0022] Figure 7 This is a schematic diagram of the three-dimensional structure of a feeding assembly and a transmission assembly of a scraper conveyor with an ultra-long working surface proposed by the present invention;

[0023] Figure 8 This is a schematic structural diagram of the reciprocating transmission components of a scraper conveyor with an extra-long working surface proposed by the present invention.

[0024] Figure 9 This is a structural schematic diagram of a scraper assembly of a scraper conveyor with an ultra-long working surface proposed by the present invention;

[0025] Figure 10 This is a structural schematic diagram of a scraper assembly and an extrusion assembly of a scraper conveyor with an ultra-long working surface proposed by the present invention;

[0026] Reference numerals:

[0027] 100. Scraper conveyor,

[0028] 1. Frame, 11. Front frame, 12. Rear frame, 13. Avoidance groove;

[0029] 2. Conveying assembly, 21. driving shaft, 22. driven shaft, 23. chain, 24. driving motor;

[0030] 3. Scraper assembly, 31. First scraper, 311. Cavity, 312. Accommodating groove, 32. Second scraper, 33. Protective cover, 34. Connecting column, 35. Second elastic member, 36. Pressing plate, 37. Third elastic member, 38. Backing ring, 39. Mounting seat;

[0031] 4. chute, 41. trough body, 411. conveying section, 412. arc section, 42. fixed plate, 43. support plate,

[0032] 5. Tensioning assembly, 51. Telescopic drive member, 52. Slide seat, 521. First plate, 522. Second plate, 523. Third plate, 53. Limiting teeth, 54. First transverse plate, 55. Second transverse plate, 56. Slider, 57. Guide rod, 58. First elastic member,

[0033] 6. Feeding assembly, 61. Support frame, 611. Support portion, 612. Connecting portion, 613. Fixing portion, 62. Hopper, 63. Material guide box, 631. Feeding port, 632. First avoidance hole, 633. Second avoidance hole, 64. Pushing plate, 641. Blocking section, 642. Pushing section, 65. Reciprocating transmission member, 651. Turntable, 652. Transmission belt, 653. Driving 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. Press rail. DETAILED DESCRIPTION

[0035] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0036] Please refer to the attached 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 of the embodiment of the present invention comprises a frame 1, a conveying assembly 2, a scraper assembly 3 and a chute 4. The conveying assembly 2 is arranged on the frame 1, and the conveying assembly 2 comprises a driving shaft 21, a driven shaft 22 and a chain 23. The driving shaft 21 is arranged on the frame 1 in the first direction (for example Figure 1 The driven shaft 22 is provided at the other end of the frame 1 in the first direction. The outer sides of the driving shaft 21 and the driven shaft 22 are engaged with the chain 23. The scraper assembly 3 is provided 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 fixed plate 42. The trough body 41 is provided on the frame 1. The trough body 41 is opposite to the scraper assembly 3. The trough body 41 includes a conveying section 411 and an arc section 412. Both ends of the conveying section 411 are provided with an arc section 412. A smooth connecting surface is provided between the arc section 412 and the conveying section 411. The conveying section 411 is provided with a fixed plate 42. The fixed plate 42 is located on the inner side of the chain 23 and supports the chain 23.

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

[0039] In the scraper conveyor 100 of the present invention, 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 rests 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 the action of gravity. This prevents the scraper assembly 3 from tilting relative to the chute 4, thereby ensuring the scraper's propulsion of the coal and mineral materials. This is particularly suitable for scraper conveyors with extremely long conveying distances, as the fixed plates 42 support the upper half of the chain 23 to prevent sagging. There is a smooth connecting surface between the arc section 412 of the trough body 41 and the conveying section 411, and the transition between the conveying section 411 and the arc section 412 is smooth, so that when the scraper assembly 3 moves 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, the scraper assembly 3 is prevented from getting stuck with the trough body 41 during the turning process of the chain 23, thereby ensuring that the scraper assembly 3 can operate normally with the chain 23, ensuring the pushing effect of the scraper assembly 3 on the coal and mineral materials, and thus ensuring the effective transportation of the 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 body 11 and a rear frame body 12 , and the chute 4 is located between the front frame body 11 and the rear frame body 12 .

[0041] like Figure 2 As shown, the chute 4 includes a trough body 41, a fixed plate 42 and a support plate 43. The cross-section of the trough body 41 is U-shaped, 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 in 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 respectively welded to the front frame 11 and the rear frame 12 to achieve a fixed connection between the trough body 41 and the frame 1. Fixed plates 42 are welded to the front and rear sides of the conveying section 411. The fixed plate 42 located on the front side of the conveying section 411 is welded to the front frame 11, and the fixed plate 42 located on the rear side of the conveying section 411 is welded to the rear frame 12.

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

[0043] Specifically, the conveying assembly 2 also includes a drive motor 24, which is arranged at one end (left end) of the frame 1. The output shaft of the drive motor 24 is connected to the active shaft 21. When the drive motor 24 is turned on, the drive motor 24 drives the active shaft 21 to rotate, and the active shaft 21 drives the chain 23 to rotate. The chain 23 drives the scraper assembly 3 to move, thereby pushing the coal and mineral materials on the trough body 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 according to an embodiment of the present 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 in the conveying section 411. The telescopic drive member 51 has a telescopic end. One side (left side) of the slide 52 is connected to the telescopic end. 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, thereby tensioning the chain 23.

[0045] Specifically, the telescopic drive member 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 member 51. The right end of the front frame and the right end of the rear frame are both provided with an avoidance groove 13. The second plate 522 is slidably disposed within the avoidance groove 13. The first plate 521 is adjacent to or in contact with the front frame, and the third plate 523 is adjacent to or in contact with the rear frame. The slide 52 is symmetrical front to back. The front and rear sides of the slide 52 are both slidably connected to the frame 1. This helps ensure smooth sliding of the slide 52 relative to the frame 1 and prevents the slide 52 from deflecting. It also improves the stability of the connection between the slide 52 and the frame 1 and helps ensure the symmetry of the chains 23 on the front and rear sides, thereby preventing the scraper assembly 3 from deflecting and ensuring that the scraper assembly 3 effectively pushes the coal and mineral materials.

[0046] The tensioning assembly 5 further includes a limiting tooth 53, a first transverse plate 54, a second transverse plate 55, a plurality of sliders 56, a guide rod 57 and a first elastic member 58. The limiting tooth 53 is provided on the slide 52, and 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, and the first vertical surface faces the telescopic driving member 51. Figure 4As shown, the lower ends of the first plate 521 and the third plate 523 are both provided with a limiting tooth 53. The first transverse plate 54 and the second transverse plate 55 are both located on the other side (right side) of the frame 1, with the first transverse plate 54 located between the second transverse plate 55 and the limiting tooth 53. The first transverse plate 54 is provided with a plurality of first sliding holes evenly arranged along the first direction, and the second transverse plate 55 is provided with 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, and the second direction is perpendicular to the first direction. Specifically, the second direction is the same as the up-down direction. The plurality of sliders 56 correspond one-to-one with the plurality of 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, which abuts the first vertical surface. A guide rod 57 is slidably disposed within the second sliding hole, and the guide rod 57 connects the slider 56. The first elastic member 58 connects the second transverse plate 55 and the slider 56.

[0047] When the chain 23 needs to be tensioned, the telescopic driving member 51 is extended, and the telescopic end drives the slide 52 to move to the right, and the limiting tooth 53 moves right synchronously with the slide 52. The first inclined surface of the limiting tooth 53 presses the second inclined surface of the slider 56, thereby causing the slider 56 and the guide rod 57 to move downward, and the first elastic member 58 is squeezed and contracted. When the compressed slider 56 is staggered with the limiting tooth 53, the compressed 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, so that the slide 52 remains stable after moving 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 52 moves to a certain position and the limiting tooth 53 and the slider 56 are not completely offset, that is, the slider 56 is still being pressed downward by the limiting tooth 53, the slider 56 has not been fully reset, and the first vertical surface of the limiting tooth 53 and the second vertical surface of the slider 56 are not in contact, the slide 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). The slider 56 moves upward under the elastic force of the first elastic member 58 and is blocked on the left side of the limiting tooth 53, so that the first vertical surface of the limiting tooth 53 and the second vertical surface of the slider 56 are in contact, thereby limiting the position of the slider 56 on the left side of the limiting tooth 53. Due to the long length of the chain 23, the distance the slide 52 moves to the left is less than the size of the slider 56 in the left-right direction. The short movement distance can still ensure the tensioning 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, which is located on the lower side of the second transverse plate 55. The limiting protrusion limits the upward movement of the guide rod 57, preventing the guide rod 57 from falling off the second transverse plate 55, thereby ensuring the stability of the upward and downward movement of the slider 56.

[0050] Specifically, the first elastic member 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 transverse plate 55 .

[0051] like Figures 5 to 8 As shown, the scraper conveyor 100 of the embodiment of the present invention further includes a feeding assembly 6, and the feeding assembly 6 includes a support frame 61, a hopper 62, a material guide box 63, a push plate 64 and a reciprocating transmission member 65. One side of the support frame 61 is fixedly connected to the frame 1, and the material guide box 63 is provided with a hopper 62 on one side (left side) in the first direction, and the material guide box 63 is provided with 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 have a distance in the left and right directions. The push plate 64 has a blocking section 641 and a pushing section 642, and one end of the blocking section 641 is connected to the pushing section 642. As shown 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 the bottom wall of the material guide box 63. The pushing plate 64 is movably provided on the material guide box 63 along a first direction between a feeding position and a pushing position. In the feeding position, the pushing section 642 is adjacent to or in contact with the side (left side) of the material guide box 63 so that the hopper 62 is in communication with the material guide box 63. In the pushing position, the pushing section 642 is adjacent to or located at the discharge port 631 to push the material in the material guide box 63 out of the discharge port 631. The scraper assembly 3 is staggered from the discharge port 631. The reciprocating transmission member 65 connects the driving shaft 21 and the pushing plate 64 to drive the pushing plate 64 to move between the feeding position and the pushing position.

[0052] In this pushing position, the scraper assembly 3 is staggered with the discharge port 631 . In other words, in this pushing position, the scraper assembly 3 does not correspond to each other in the up and down directions, and the coal and mineral materials do not contact the scraper assembly 3 when falling into the chute 4 .

[0053] Coal and mineral materials fall downward from the hopper 62. When the push plate 64 is in the feeding position, it is adjacent to or in contact with the left side of the guide box 63, connecting the hopper 62 and the guide box 63, and the coal and mineral materials fall from the hopper 62 into the guide box 63. The reciprocating transmission member 65 drives the push plate 64 from the feeding position to the pushing position, causing the push plate 64 to move rightward until the push section 642 is adjacent to or located at the discharge opening 631. The push 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 of the discharge opening 631, causing the coal and mineral materials to fall onto the trough body 41. At the same time, as the push plate 64 moves rightward, the blocking section 641 gradually blocks the through hole between the hopper 62 and the guide box 63. Then, the reciprocating transmission member 65 drives the push plate 64 to move from the pushing position to the feeding position, causing the push 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. The scraper conveyor 100 of the embodiment of the present invention drives the push plate 64 to slide back and forth in the guide box 63 through the reciprocating transmission member 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 push plate 64. The coal and mineral materials then fall into the trough body 41 through the discharge port 631, thereby intermittently feeding the coal and mineral materials into the chute 4, thereby preventing the scraper assembly 3 from passing through the discharge port 631 without coal and mineral materials falling, and preventing the falling coal and mineral materials from causing a downward impact on the scraper assembly, causing the scraper to tilt and be damaged.

[0054] A first avoidance hole 632 is provided on the side (left side) of the material guide box 63, and a blocking section 641 is inserted into the first avoidance hole 632. The reciprocating transmission member 65 includes a turntable 651, a transmission belt 652, a drive post 653, and a slide post 654. The turntable 651 is rotatably mounted on the support frame 61 and is spaced apart from the material guide box 63. The transmission belt 652 transmits a transmission connection between the drive shaft and the turntable 651. The drive post 653 is eccentrically mounted on the turntable 651. The slide post 654 extends along the second direction and is provided with a slide groove. The slide groove extends along the second direction. The drive post 653 is slidably mounted within the slide groove. The slide post 654 is connected to the blocking section 641. When the driving motor drives the active shaft to rotate, the turntable 651 is driven to rotate through the transmission belt 652, and the driving column 653 eccentrically arranged on the turntable 651 rotates with the turntable 651. Since the driving column 653 is located in the slide groove of the slide column 654, the driving column 653 drives the slide column 654 to move back and forth in the left and right directions, thereby driving the push plate 64 to move back and forth in the left and right directions.

[0055] The reciprocating transmission member 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 blocking 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 the guide box 63. The connecting plate 655 can limit the rightward movement of the pushing plate 64 and still achieve the blocking of the hopper 62 and the guide box 63 in this pushing position, preventing the accumulation of coal materials on the left side of the pushing section 642. Figure 6 As shown, the ejector plate 64 is located in the ejector position.

[0056] A second avoidance hole 633 is provided on the left side of the guide box 63. The feeding assembly 6 further includes a reinforcing rod 68, one end (the right end) of which is connected to the pushing section 642. The reinforcing rod 68 passes through the second avoidance hole 633, and the other end (the left end) of the reinforcing rod 68 is connected to the connecting plate 655. The reinforcing rod 68 connects the pushing section 642 and the connecting plate 655, thereby enhancing the strength of the pushing plate 64, improving the resistance of the pushing section 642 when pushing the coal and mineral material, and ensuring that the pushing plate 64 can smoothly push the coal and mineral material 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 disposed on the frame 1, the turntable 651 is disposed on the support portion 611, and the fixing portion 613 is fixedly connected to the material guide box 63. The support portion 611 and the fixing portion 613 are spaced apart in the front-to-back direction, providing space for accommodating the turntable 651, the drive column 653, and the slide 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 column 34, and a second elastic member 35. The first scraper 31 is provided on the chain 23, with a gap between the first scraper 31 and the trough body 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 trough body 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 accommodating groove 312, the protective cover 33 is connected to one end (upper end) of the connecting column 34, the connecting column 34 is passed through the first through hole and the second through hole, and the other end (lower end) of the connecting column 34 is connected to the second scraper 32, and the second elastic member 35 is disposed in the cavity 311, and the second elastic member 35 connects the first scraper 31 and the connecting column 34 to form a force on the connecting column 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, and the multiple drag seats are arranged at equal intervals on the chain 23. The mounting seats 39 are fixed to the bracket by bolts to achieve a fixed connection between the first scraper 31 and the two chains 23, thereby preventing the first scraper 31 from deflecting relative to the chain 23.

[0060] The elasticity of the second elastic member 35 causes the connecting posts 34 and the pressure plate 36 to move upward, positioning the second scraper 32 within the receiving slot 312. A protective shield 33 is fixedly mounted on the top of the two connecting posts 34. The shield 33 fits over the top of the first scraper 31 and has a curved top surface. When the scraper assembly 3 moves below the guide box 63, the guide box 63 squeezes the shield 33, causing the shield 33 and the connecting posts 34 to move downward relative to the first scraper 31, thereby moving the second scraper 32 downward and causing the lower end of the second scraper 32 to contact the slot 41. This compresses and contracts the second elastic member 35. When the scraper assembly 3 passes through the discharge port 631 of the guide box 63, the discharge port 631 has a space allowing the protective cover 33 to move upward, and the size of the discharge port 631 in the front-to-back direction is larger than the size 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, in the process of passing through the discharge port 631, the protective cover 33 is not squeezed by the guide box 63. Under the elastic force of the second elastic member 35, the second elastic member 35 forms an upward force on the protective cover 33, driving the second scraper 32 and the protective cover 33 to move upward and return to the original position. The second scraper 32 is retracted into the accommodating groove 312, and the lower end of the second scraper 32 is not lower than the lower end of the first scraper 31. As a result, 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 body 41, so that after the scraper assembly 3 scrapes the trough body 41 below the discharge port 631, a thin layer of coal mineral material can be left on the trough body 41 below the discharge port 631. The coal mineral material layer can play a certain buffering and shock-absorbing role, so that when the coal mineral material falls from the discharge port 631 onto the trough body 41, the coal mineral material is prevented from directly colliding with the trough body 41 and causing deformation of the trough body 41.

[0061] The scraper assembly 3 further includes a pressure plate 36 and a third elastic member 37. The pressure plate 36 is connected to the other (lower) end of the connecting column 34. The third elastic member 37 connects the pressure plate 36 and the second scraper 32. The pressure plate 36 limits the upward movement of the connecting column 34. The third elastic member 37 allows the second scraper 32 to have a certain amount of room to move and position relative to the pressure plate 36. The elastic force of the third elastic member 37 also increases the squeezing force of the second scraper 32 on the trough 41, thereby improving the scraper assembly 3's ability to push the coal and mineral material.

[0062] The scraper assembly 3 further includes a washer 38, which is mounted on the connecting post 34 and positioned within the cavity 311. A second elastic member 35 connects the washer 38 and the first scraper 31. The second elastic member 35 is a second spring, which is sleeved onto the connecting post 34. The lower end of the second spring abuts the wall of the cavity 311 of the first scraper 31, while the upper end of the second spring abuts the connecting washer 38. The provision of the connecting washer 38 facilitates the connection between the upper end of the second spring and the connecting post 34, facilitating the transmission of force between the second spring and the connecting post 34, and ensuring the effective transmission of the elastic force of the second spring.

[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 provided at the left end of the material guide box 63, and 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. Therefore, when the scraper assembly 3 moves from the left side to the right side of the material 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 move smoothly to the lower side of the material guide box 63. The second inclined plate 67 is provided on the wall of the material guide box 63 at the discharge opening 631. The second inclined plate 67 is located to the right of the discharge opening 631. The second inclined plate 67 is a triangular plate. The right side of the second inclined plate 67 abuts the right wall of the material guide box 63. The lower side of the second inclined plate 67 gradually decreases in height, with the left side higher and the right side lower. As the scraper assembly 3 moves from the left to the right of the discharge opening 631, the lower side of the second inclined plate 67 abuts 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 material guide box 63. The distance between the left side of the second inclined plate 67 and the right wall of the material guide box 63 gradually increases from top to bottom. As the push plate 64 pushes the coal and mineral material out of the discharge opening 631, the left side of the second inclined plate 67 can guide the material to a certain extent and prevent it from accumulating on the left side of the second inclined surface.

[0064] like Figure 10 As shown, the scraper conveyor 100 according to the embodiment of the present invention further includes a squeezing assembly 7, which includes an arch frame 71 and a pressure rail 72. There are multiple arch frames 71, which are spaced apart on the frame 1. The pressure rail 72 is provided below the arch frames 71 and abuts against the protective cover 33. The pressure rail 72 is strip-shaped. After the scraper assembly 3 is detached from the right end of the material guide box 63, the pressure rail 72 continues to squeeze the protective cover 33, thereby keeping the second scraper 32 in contact with the bottom wall of the trough 41, and the scraper assembly 3 pushes the coal and mineral materials in the trough 41 to the right.

[0065] In the embodiment of the present invention, the scraper conveyor 100 with an extra-long working surface, when in use, uses the fixed plate 42 to lift the chain 23, preventing the upper half of the chain 23 from sagging under the action of gravity. The hydraulic cylinder output terminal extends, driving the slide 52 to move rightward, thereby driving the driven shaft 22 to move rightward, 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. As the slide 52 moves rightward, the limiter 53 simultaneously moves rightward. The first inclined surface of the limiter 53 presses against the second inclined surface of the slider 56, causing the slider 56 and the guide rod 57 to move downward, compressing and contracting the first spring. When the slider 56 is offset from the limiter 53, the slider 56 moves upward under the elastic force of the first spring to reset and abut against the first vertical surface to the left of the limiter 53, preventing the slide 52 from moving long distances to the left and ensuring a more stable tensioning effect on the chain 23.

[0066] The driving motor drives the driving shaft 21 to rotate, and drives the chain 23 to rotate clockwise. At the same time, the transmission action of the transmission belt 652 drives the turntable 651 to rotate, and the driving column 653 performs a circular motion. In the process of the driving column 653 sliding along the slide groove, the sliding column 654 is pushed to move back and forth, thereby driving the push plate 64 to move back and forth in the guide box 63. The push plate 64 pushes the coal and mineral materials that fall from the hopper 62 and only the left half of the guide box 63 to the right half of the guide box 63, and makes the coal and mineral materials pass through the discharge port 631 and fall into the trough body 41.

[0067] As the scraper assembly 3 follows the chain 23, the scraper assembly 3 moves from the left end to the right end of the frame 1. As the scraper assembly 3 moves from the lower side of the left arc segment 412 to the upper side, the protective cover 33 is not squeezed downward. The second scraper 32 is located within the receiving groove 312 of the first scraper 31. Both the first scraper 31 and the second scraper 32 have a gap with the trough body 41, preventing the scraper assembly 3 from getting stuck at the left turn and ensuring that the scraper assembly 3 can move smoothly from the lower side to the upper side of the trough body 41. When the scraper assembly 3 moves from the left arc segment 412 to the conveying section 411, when the scraper assembly 3 moves to the first inclined plate 66, the first inclined plate 66 squeezes the protective cover 33, allowing the scraper assembly 3 to move smoothly to the lower side of the material guide box 63. When the scraper assembly 3 moves to the discharge port 631, under the elastic force of the second elastic member 35, the protective cover 33 moves upward, and the second scraper 32 retracts into the interior of the accommodating groove 312; at this time, a gap appears between the bottom of the first scraper 31 and the bottom wall of the groove body 41, so that a thin layer of coal mineral material is formed on the groove body 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 groove body 41, avoiding the coal mineral material directly hitting the groove body 41 and causing the groove body 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 squeezes the protective cover 33, causing the second scraper 32 to extend out of the receiving slot 312. When the scraper assembly 3 moves out from the lower side of the material guide box 63 and enters the lower side of the pressure rail 72, the pressure rail 72 squeezes the protective cover 33, ensuring the squeezing force between the second scraper 32 and the bottom wall of the trough body 41, so that the first scraper 31 and the second scraper 32 can steadily push the coal and mineral materials in the trough body 41. When the scraper assembly 3 moves to the right end of the frame 1, the scraper assembly 3 is no longer squeezed by the pressure rail 72, and the protective cover 33 and the second scraper 32 are reset. The second scraper 32 retracts into the receiving slot 312, and the lower ends of the second scraper 32 and the lower ends of the first scraper 31 are both clear of the right arc segment 412, preventing the scraper assembly 3 (mainly the first and second scrapers) from getting stuck with the trough body 41 at the right bend, which would affect the normal use of the scraper assembly 3.

[0068] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present 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 the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0070] In the present invention, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0071] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0072] In the present invention, the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples without contradiction.

[0073] Although the embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and are not to be construed as limitations on the present invention. A person skilled in the art may change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A scraper conveyor (100) with an extra-long working surface, characterized in that: include: Rack (1); A conveying assembly (2), the conveying assembly (2) being arranged on the frame (1), the conveying assembly (2) comprising a driving shaft (21), a driven shaft (22) and a chain (23), the driving shaft (21) being arranged at one end of the frame (1) in a first direction, the driven shaft (22) being arranged at the other end of the frame (1) in the first direction, and the outer sides of the driving shaft (21) and the driven shaft (22) being meshed and connected to the chain (23); a scraper assembly (3), wherein the scraper assembly (3) is arranged on the chain (23), and the conveying assembly (2) drives the scraper assembly (3) to move via the chain (23); and A chute (4), the chute (4) comprising a chute body (41) and a fixed plate (42), the chute body (41) being arranged on the frame (1), the chute body (41) being opposite to the scraper assembly (3), the chute body (41) comprising a conveying section (411) and an arc section (412), the arc section (412) being provided at both ends of the conveying section (411), a smooth connection surface being provided between the arc section (412) and the conveying section (411), the conveying section (411) being provided with the fixed plate (42), the fixed plate (42) being located on the inner side of the chain (23) and supporting the chain (23).

2. The scraper conveyor (100) with an extra-long working surface according to claim 1, characterized in that: It further comprises a tensioning assembly (5), wherein the tensioning assembly (5) comprises: a telescopic driving member (51), the telescopic driving member (51) being provided in the conveying section (411), the telescopic driving member (51) having a telescopic end; and A slide (52), one side of the slide (52) is connected to the telescopic end, the driven shaft is rotatably arranged on the other side of the slide (52), and the slide (52) is slidably arranged on the other end of the frame (1).

3. The scraper conveyor (100) with an extra-long working surface according to claim 2, characterized in that: The tensioning assembly (5) further comprises: A limiting tooth (53), the limiting tooth (53) being provided on the sliding seat (52), one side of the limiting tooth (53) in the first direction being a first inclined surface, and the other side of the limiting tooth (53) in the first direction being a first vertical surface, the first vertical surface facing the telescopic driving member (51); A first transverse plate (54) and a second transverse plate (55), wherein the first transverse plate (54) and the second transverse plate (55) are both arranged on the other side of the frame (1), the first transverse plate (54) is located between the second transverse plate (55) and the limiting tooth (53), the first transverse plate (54) is provided with a plurality of first sliding holes evenly arranged along the first direction, the second transverse plate (55) is provided with a plurality of second sliding holes evenly arranged along the first direction, the plurality of second sliding holes correspond to the plurality of first sliding holes in a one-to-one manner in the second direction, and the second direction is perpendicular to the first direction; A plurality of sliders (56), wherein the plurality of sliders (56) correspond to the plurality of first sliding holes one by one 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, and the second vertical surface abuts against the first vertical surface; a guide rod (57), the guide rod (57) being slidably disposed in the second slide hole, the guide rod (57) being connected to the slider (56); and A first elastic member (58), wherein the first elastic member (58) connects the second transverse plate (55) and the slider (56).

4. The scraper conveyor (100) with an extra-long working surface according to claim 1, characterized in that: The invention further comprises a feeding assembly (6), wherein the feeding assembly (6) comprises: A support frame (61), one side of the support frame (61) is fixedly connected to the frame (1); A hopper (62) and a material guide box (63), wherein the material guide box (63) is provided with the hopper (62) on one side in the first direction, and the material guide box (63) is provided with a material discharge port (631) on the other side in the first direction, and the hopper (62) and the material discharge port (631) are spaced apart in the first direction; A push plate (64), the push 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 push plate (64) being movably arranged on the guide box (63) between a feeding position and a pushing position along the first direction, wherein at the feeding position, the pushing section (642) is adjacent to or in contact with the one side of the guide box (63) so that the hopper (62) is in communication with the guide box (63), and at the pushing position, the pushing section (642) is adjacent to or located at the discharge port (631) so as to push the material in the guide box (63) out of the discharge port (631), and the scraper assembly (3) is staggered with the discharge port (631); and A reciprocating transmission member (65) is connected to the driving shaft (21) and the push plate (64) to drive the push plate (64) to move between the feeding position and the pushing position.

5. The scraper conveyor (100) with an extra-long working surface according to claim 4, characterized in that: A first avoidance hole (632) is provided on one side of the material guide box (63), and the blocking section (641) is passed through the first avoidance hole (632); The reciprocating transmission member (65) comprises: a turntable (651), the turntable (651) being rotatably disposed on the support frame (61), the turntable (651) being spaced apart from the material guide box (63); a transmission belt (652), the transmission belt (652) transmitting and connecting the driving shaft and the rotating disk (651); A driving column (653), wherein the driving column (653) is eccentrically arranged on the rotating disk (651); A sliding column (654), wherein the sliding column (654) extends along a second direction, wherein the second direction is perpendicular to the first direction, a sliding groove is provided on the sliding column (654), wherein the driving column (653) is slidably disposed in the sliding groove, and the sliding column (654) is connected to the blocking section (641).

6. The scraper conveyor (100) with an extra-long working surface according to claim 5, characterized in that: The reciprocating transmission member (65) further includes a connecting plate (655) and a connecting rod (656), wherein the connecting plate (655) is connected to the other end of the blocking section (641), the connecting plate (655) is located outside the material guide box (63), and the connecting rod (656) connects the connecting plate (655) and the sliding column (654); The support frame (61) comprises 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 provided on the frame (1); the turntable (651) is provided on the support portion (611); and the fixing portion (613) is fixedly connected to the material guide box (63).

7. The scraper conveyor (100) with an extra-long working surface according to claim 4, characterized in that: The scraper assembly (3) comprises: a first scraper (31), the first scraper (31) being provided on the chain (23), a gap being formed between the first scraper (31) and the trough body (41), a cavity (311), a first through hole and a receiving groove (312) being provided in the first scraper (31), one side of the cavity (311) being in communication with the receiving groove (312) through the first through hole, the receiving groove (312) facing the trough body (41), and a second through hole being provided on the other side of the cavity (311); a second scraper (32), the second scraper (32) being slidably disposed in the receiving groove (312); a protective cover (33) and a connecting post (34), wherein the protective cover (33) is connected to one end of the connecting post (34), the connecting post (34) is inserted into 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 A second elastic member (35) is provided in the cavity (311), and the second elastic member (35) connects the first scraper (31) and the connecting column (34) to form a force on the connecting column (34) toward the protective cover (33).

8. The scraper conveyor (100) with an extra-long working surface according to claim 7, characterized in that: The scraper assembly (3) further includes a pressing plate (36) and a third elastic member (37), wherein the pressing plate (36) is connected to the other end of the connecting column (34), and the third elastic member (37) connects the pressing plate (36) and the second scraper (32).

9. The scraper conveyor (100) with an extra-long working surface according to claim 7, characterized in that: The scraper assembly (3) further includes a gasket (38), which is provided on the connecting column (34) and located in the cavity (311). The second elastic member (35) is used to connect the gasket (38) and the first scraper (31).

10. The scraper conveyor (100) with an extra-long working surface according to claim 7, characterized in that: The machine further comprises an extrusion assembly (7), wherein the extrusion assembly (7) comprises an arch frame (71) and a pressure rail (72), wherein the arch frames (71) are provided in plurality, and the plurality of arch frames (71) are arranged at intervals on the machine frame (1), and the pressure rail (72) is provided under the arch frame (71), and the pressure rail (72) abuts against the protective cover (33).

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