An apron conveyor

Abstract

The present application belongs to the technical field of conveyors, and particularly relates to a scraper conveyor, which comprises a scraper conveyor body, a turning assembly and a guide rail, the turning assembly is arranged at a turning position of the scraper conveyor body, the turning assembly comprises a guide cover and a guide wheel, the guide cover and the guide wheel are both annular in shape, the guide wheel is provided with two guide wheels which are coaxially arranged above and below and are both rotationally connected with the guide cover, the guide wheel is provided with a groove matched with a scraper, the guide cover is composed of a first cover body and a second cover body, a connecting assembly is arranged between the first cover body and the second cover body, the guide wheel comprises a first guide half wheel and a second guide half wheel, and the central angle of the second cover body and the second guide half wheel is the same. The annular guide wheel and the guide cover replace the traditional waist-shaped turning structure, a smooth and continuous circular guide track is formed, sudden change of curvature is fundamentally avoided, and the running resistance and abrasion of the scraper chain at the turning position are reduced.

Description

Technical Field

[0001] This invention belongs to the field of conveyor technology, and specifically relates to a scraper conveyor. Background Technology

[0002] As the core transportation equipment in longwall mining faces, the performance of scraper conveyors directly affects coal mining efficiency and the overall layout of the face. In practical applications, to meet the needs of continuous face advancement and roadway connection, scraper conveyors often require turning sections. Existing technologies for implementing turning sections in scraper conveyors mainly suffer from the following problems:

[0003] For example, the double-chain turning scraper conveyor disclosed in prior art document CN113086517A uses an arc-shaped track within a fixed frame, and is equipped with an auxiliary guiding component formed by multiple rotating components connected end to end. Although this scheme reduces running resistance through rolling friction, its overall structure is cashew-shaped, which inevitably leads to a significant increase in running resistance, aggravates the wear of the chain, scraper, and guiding mechanism, and increases the consumption of drive power and the risk of unstable operation.

[0004] For example, the prior art document CN212531049U discloses a novel 90° curved scraper conveyor that employs a rotary turning mechanism. This solution uses grooves on the rotary wheel to engage with the scraper for guidance. While it can accommodate double-chain structures, its rotary wheel is typically an integral disc structure. This structure results in a large radial dimension (footprint) for the turning device, which conflicts with the compact underground space layout and is detrimental to the arrangement of support equipment in that area. Summary of the Invention

[0005] To address the aforementioned technical problems, the present invention provides a scraper conveyor with a ring-shaped turning device that can be opened and closed, which facilitates the arrangement of support devices.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows:

[0007] A scraper conveyor includes a scraper conveyor body, a turning assembly, and a guide rail. The turning assembly is located at the turning point of the scraper conveyor body. The turning assembly includes a guide cover and guide wheels. Both the guide cover and the guide wheels are annular in shape. There are two guide wheels, which are coaxially arranged vertically and rotatably connected to the guide cover. The guide wheels are provided with grooves that cooperate with the scraper.

[0008] The guide cover is composed of a first cover and a second cover connected together, and a connecting component is provided between the first cover and the second cover; the guide wheel includes a first guide half-wheel and a second guide half-wheel; the center angles of the second cover and the second guide half-wheel are the same;

[0009] The guide rail consists of two rails connected together; the two rails are spaced apart and fixedly connected to the scraper conveyor body; the first cover is fixedly connected to the guide rail; a slider is slidably connected to the rail; one end of the second cover is fixedly connected to the slider on the left rail by bolts, and the other end of the second cover is hinged to the slider on the right rail; the guide rail is connected to a drive assembly that drives the second cover to move and rotate.

[0010] The two guide wheels are connected by transmission gears, and there are at least three transmission gears. The transmission gears are rotatably connected to the guide cover; both guide wheels are provided with teeth that mesh with the transmission gears.

[0011] The first guide half-wheel and the second guide half-wheel in the upper guide wheel are both fixedly connected to a semi-annular toothed rail, and the first guide half-wheel is provided with a power component connected to the semi-annular toothed rail.

[0012] The power assembly includes a connecting seat and a geared motor. The connecting seat is connected to the first cover through a first lifting cylinder. The housing of the geared motor is fixedly connected to the connecting seat. A drive gear that meshes with a semi-annular toothed rail is fixedly connected to the output shaft of the geared motor.

[0013] The connecting assembly includes a second lifting cylinder and a lifting plate. The two ends of the second lifting cylinder are fixedly connected to the second cover and the lifting plate, respectively. A positioning seat is fixedly connected to the first cover, and a positioning pin that is inserted into the positioning seat is fixedly connected to the lifting plate.

[0014] The lifting plate is fixedly connected with a limiting pin; the second cover is provided with a through hole that cooperates with the limiting pin, and the limiting pin can pass through the through hole and contact the second guide half wheel in the guide wheel located at the top.

[0015] The drive assembly includes two drive cylinders, the cylinder bodies of which are fixedly connected to the guide rail; the piston rod ends of the two drive cylinders are respectively connected to the second cover through a fixing assembly.

[0016] The fixing assembly includes a fixing ear plate, a connecting ear plate, and a pin; the fixing ear plate is fixedly connected to the second cover, and the connecting ear plate is fixedly connected to the piston rod of the drive cylinder; the pin passes through the fixing ear plate and is inserted into the connecting ear plate, and after the pin is inserted into the connecting ear plate, the upper end face of the pin is higher than the lower end face of the second cover.

[0017] A connecting chain plate is fixedly connected to the second cover, and the connecting chain plate is connected to the connecting ear plate by a chain.

[0018] The first guide half-wheel and the second guide half-wheel are rotatably connected to the first support wheel and the second support wheel; the first support wheel is horizontally arranged and the second support wheel is vertically arranged; the first cover and the second cover are provided with annular grooves that cooperate with the second support wheel.

[0019] Compared with the prior art, the beneficial effects of this invention are:

[0020] By replacing the traditional waist-shaped turning structure with an annular guide wheel and guide cover, a smooth and continuous circular guide trajectory is formed, which fundamentally avoids abrupt changes in curvature, reduces the running resistance and wear of the scraper chain at the turning point, and improves the stability and reliability of the equipment operation.

[0021] The guide cover and guide wheel are designed as a separable structure consisting of a first and second cover body and a half-wheel, and are equipped with a drive assembly and a connecting assembly. This design allows the turning assembly to be partially moved and rotated open, providing a passage for the insertion of support components such as hydraulic supports.

[0022] The upper and lower guide wheels rotate synchronously in opposite directions through transmission gears; the cooperation between the power component and the semi-circular toothed rail not only provides auxiliary driving force during operation, but also controls the position of the guide wheels before separating the second cover, ensuring that the second guide half wheel moves synchronously with the second cover.

[0023] The drive assembly is not only responsible for moving and opening / closing the enclosure, but also assists in positioning the traction support assembly via rope connections. The limit pin design in the connection assembly effectively locks the guide half-wheels when the enclosure separates, preventing accidental rotation. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of the present invention in one direction;

[0025] Figure 2 yes Figure 1 A magnified view of a section at point A in the middle;

[0026] Figure 3 yes Figure 1 A magnified view of a section at point B in the middle;

[0027] Figure 4 This is a schematic diagram of the structure from another direction of the present invention;

[0028] Figure 5 This is a cross-sectional view of the present invention;

[0029] Figure 6 yes Figure 5 A magnified view of a section at point C;

[0030] Figure 7 This is a schematic diagram of the structure of the present invention with the guide cover and some components removed;

[0031] Figure 8 yes Figure 7 A magnified view of a section at point D;

[0032] Figure 9 This is a schematic diagram of the second cover of the present invention in the open state;

[0033] Wherein: 1 is the scraper conveyor body, 2 is the turning assembly, 3 is the guide rail, 30 is the rail, 4 is the guide cover, 40 is the first cover, 41 is the second cover, 5 is the guide wheel, 50 is the first guide half wheel, 51 is the second guide half wheel, 6 is the groove, 7 is the connecting assembly, 70 is the second lifting cylinder, 71 is the lifting plate, 72 is the positioning seat, 73 is the positioning pin, 74 is the limit pin, 8 is the slider, 9 is the bolt, 10 is the drive assembly, 100 is the drive cylinder, 101 is the fixed ear plate, 102 is the connecting ear plate, 103 is the pin, 11 is the transmission gear, 12 is the tooth, 13 is the semi-ring toothed rail, 14 is the connecting seat, 15 is the geared motor, 16 is the first lifting cylinder, 17 is the drive gear, 18 is the connecting chain plate, 19 is the chain, 20 is the first support wheel, 21 is the second support wheel, and 22 is the ring groove. Detailed Implementation

[0034] The technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0035] like Figures 1 to 9 As shown, a scraper conveyor includes a scraper conveyor body 1, a turning assembly 2, and a guide rail 3. The turning assembly 2 is located at the turning point of the scraper conveyor body 1. The turning assembly 2 includes a guide cover 4 and a guide wheel 5; both the guide cover 4 and the guide wheel 5 are annular in shape, and the internal space within the annulus can be used to install support components, such as hydraulic supports. Meanwhile, the circular guide wheel 5's operating state is similar to that of the disc-shaped guide wheel 5 in the prior art, and is superior to the existing waist-shaped turning structure (whose complex curve structure increases operating resistance).

[0036] Two guide wheels 5 are provided, which are coaxially arranged vertically and rotatably connected to the guide cover 4. The guide wheels 5 are provided with grooves 6 that cooperate with the scraper. The upper and lower guide wheels 5 respectively cooperate with the scrapers on the top chain and bottom chain of the scraper conveyor body 1.

[0037] The guide cover 4 is composed of a first cover body 40 and a second cover body 41 connected together. A connecting component 7 is provided between the first cover body 40 and the second cover body 41, which fixes the first cover body 40 and the second cover body 41 into a complete ring shape. The guide wheel 5 includes a first guide half wheel 50 and a second guide half wheel 51. The first guide half wheel 50 and the second guide half wheel 51 are disposed inside the guide cover 4. When the first cover body 40 and the second cover body 41 are connected, the first guide half wheel 50 and the second guide half wheel 51 are constrained to form a complete ring shape and can rotate along the guide cover 4.

[0038] The second cover 41 and the second guide half-wheel 51 have the same center angle. When the second cover 41 is separated from the first cover 40 for the installation of the support assembly, the first guide half-wheel 50 is located inside the first cover 40 and the second guide half-wheel 51 is located inside the second cover 41.

[0039] The guide rail 3 consists of two rails 30 connected together. The two rails 30 are spaced apart and fixedly connected to the scraper conveyor body 1. The first cover 40 is fixedly connected to the guide rail 3. Slider blocks 8 are slidably connected to both rails 30. The front end of each rail 30 is provided with a limiting protrusion to prevent the slider 8 from moving off the rail 30. One end of the second cover 41 is fixedly connected to the slider 8 on the left rail 30 by bolts 9, and the other end of the second cover 41 is hinged to the slider 8 on the right rail 30.

[0040] When the support assembly needs to be installed, the second cover 41 is driven to move away from the first cover 40 by the drive assembly 10; after moving a certain distance, the bolts 9 on the second cover 41 and the left track 30 are removed, and then the second cover 41 is rotated open by the drive assembly 10 to facilitate the movement of the support assembly between the first cover 40 and the second cover 41.

[0041] After the support components are installed in place, the second cover 41 is driven to rotate in the opposite direction and close by the drive component 10. The second cover 41 is then fixedly connected to the slider 8 on the left track 30 by the bolt 9. After that, the second cover 41 is driven to move closer to the first cover 40 by the drive component 10. Finally, the first cover 40 and the second cover 41 are fixed by the connecting component 7.

[0042] Furthermore, the two guide wheels 5 are connected by transmission gears 11, and there are at least three transmission gears 11. The transmission gears 11 are rotatably connected to the guide cover 4. Both guide wheels 5 are provided with teeth 12 that mesh with the transmission gears 11. When the upper guide wheel 5 rotates clockwise, the lower guide wheel 5 rotates counterclockwise under the action of the transmission gears 11.

[0043] Semi-annular toothed rails are fixedly connected to both the first guide half-wheel 50 and the second guide half-wheel 51 in the upper guide wheel 5. When the first cover 40 and the second cover 41 are connected, the two semi-annular toothed rails 13 can form a complete circular toothed rail. A power component connected to the semi-annular toothed rail is provided on the first guide half-wheel 50. The purpose of the power component is to drive the guide wheel 5 to rotate before the second cover 41 is separated from the first cover 40, so as to ensure that the second guide half-wheel 51 is located inside the second cover 41. At the same time, during the operation of the scraper conveyor, additional driving force can be added through the power component as needed.

[0044] Furthermore, the power assembly includes a connecting seat 14 and a geared motor 15. The connecting seat 14 is connected to the first cover 40 via a first lifting cylinder 16, with both ends of the first lifting cylinder 16 fixedly connected to the connecting seat 14 and the first cover 40, respectively. The connecting seat 14 moves up and down by extending and retracting the piston rod of the first lifting cylinder 16.

[0045] The housing of the geared motor 15 is fixedly connected to the connecting seat 14, and a drive gear 17 that meshes with the semi-circular toothed track is fixedly connected to the output shaft of the geared motor 15. When the piston rod of the first lifting cylinder 16 retracts, it drives the connecting seat 14 and the geared motor 15 to move downward, so that the drive gear 17 meshes with the semi-circular toothed track; when the piston rod of the first lifting cylinder 16 extends, it drives the connecting seat 14 and the geared motor 15 to move upward, so that the drive gear 17 separates from the semi-circular toothed track.

[0046] Furthermore, the connecting assembly 7 preferably has two components, including a second lifting cylinder 70 and a lifting plate 71. The two ends of the second lifting cylinder 70 are fixedly connected to the second cover 41 and the lifting plate 71, respectively. A positioning seat 72 is fixedly connected to the first cover 40, and a positioning pin 73, which inserts into the positioning seat 72, is fixedly connected to the lifting plate 71. When the second cover 41 moves to fit against the first cover 40, the piston rod of the second lifting cylinder 70 extends, causing the positioning pin 73 to insert into the positioning seat 72, thereby fixing the first cover 40 and the second cover 41. When the second cover 41 needs to move away from the first cover 40, the piston rod of the second lifting cylinder 70 retracts, causing the positioning pin 73 to move out of the positioning seat 72.

[0047] Furthermore, a limiting pin 74 is fixedly connected to the lifting plate 71; the second cover 41 is provided with a through hole that cooperates with the limiting pin 74. When the second cover 41 needs to move away from the first cover 40, the piston rod of the second lifting cylinder 70 retracts, and at the same time the positioning pin 73 moves out of the positioning seat 72, the limiting pin 74 will pass through the through hole and contact the second guide half-wheel 51 in the upper guide wheel 5, thereby preventing the second guide half-wheel 51 from rotating during the movement of the second cover 41.

[0048] Furthermore, the drive assembly 10 includes two drive cylinders 100, the cylinder bodies of the two drive cylinders 100 are fixedly connected to the guide rail 3; when it is necessary to push the second cover 41 to move, the piston rod ends of the two drive cylinders 100 are fixedly connected to the second cover 41 through the fixing assembly, that is, the second cover 41 is pushed to move away from the first cover 40 by the extension of the piston rods of the two drive cylinders 100.

[0049] When the second cover 41 needs to be rotated open, the piston rod ends of the two drive cylinders 100 contact the second cover 41 through fixing components, and the bolts 9 are removed; at this time, the piston rods of the two drive cylinders 100 extend and push the second cover 41 to rotate open. If the second cover 41 is not fully opened under the action of the two drive cylinders 100, it can be fully opened with the assistance of a winch or other tools. Figure 9 Angle (Note) Figure 9 It includes chain 19, but chain 19 does not need to be set during the opening process.

[0050] The piston rods of the two drive cylinders 100 can be connected to the support assembly (hydraulic support) via ropes. Through the cooperation of the two drive cylinders 100, the support assembly is pulled between the first cover 40 and the second cover 41; that is, the two drive cylinders 100 can also assist in the movement of the support assembly.

[0051] Furthermore, the fixing assembly includes a fixing ear plate 101, a connecting ear plate 102, and a pin 103; the fixing ear plate 101 is fixedly connected to the second cover 41, and the connecting ear plate 102 is fixedly connected to the piston rod of the drive cylinder 100. When it is necessary to push the second cover 41 to move, the pin 103 is inserted through the fixing ear plate 101 and into the connecting ear plate 102. When it is necessary to rotate and open the second cover 41, the piston rods of the two drive cylinders 100 first retract to the inside of the second cover 41 (the bolt 9 has been removed), and then the pin 103 is inserted into the connecting ear. After the pin 103 is inserted into the connecting ear, the upper end face of the pin 103 is higher than the lower end face of the second cover 41; therefore, at this time, the piston rods of the two drive cylinders 100 extend, and the pin 103 will contact the inner side of the second cover 41 and push the second cover 41 to rotate and open.

[0052] Furthermore, a connecting chain plate 18 is fixedly connected to the second cover 41. When the second cover 41 needs to be rotated in the opposite direction to close, the connecting chain plate 18 is connected to the connecting ear plate 102 on the left drive cylinder 100 via a chain 19, and the piston rod of the left drive cylinder 100 retracts to drive the second cover 41 to rotate in the opposite direction to close.

[0053] Furthermore, both the first guide half-wheel 50 and the second guide half-wheel 51 are rotatably connected to the first support wheel 20 and the second support wheel 21; the first support wheel 20 is horizontally arranged, and the second support wheel 21 is vertically arranged; the first cover 40 and the second cover 41 are provided with annular grooves 22 that cooperate with the second support wheel 21. By setting the first support wheel 20 and the second support wheel 21, the resistance when the first guide half-wheel 50 and the second guide half-wheel 51 rotate can be effectively reduced.

[0054] The above description only illustrates preferred embodiments of the present invention, but the present invention is not limited to the above embodiments.

Claims

1. A scraper conveyor, characterized in that: The system includes a scraper conveyor body (1), a turning assembly (2), and a guide rail (3). The turning assembly (2) is located at the turning point of the scraper conveyor body (1). The turning assembly (2) includes a guide cover (4) and a guide wheel (5). Both the guide cover (4) and the guide wheel (5) are annular in shape. There are two guide wheels (5), which are coaxially arranged vertically and are rotatably connected to the guide cover (4). The guide wheel (5) has a groove (6) that cooperates with the scraper. The guide cover (4) is composed of a first cover (40) and a second cover (41) connected together, and a connecting component (7) is provided between the first cover (40) and the second cover (41); the guide wheel (5) includes a first guide half wheel (50) and a second guide half wheel (51); the center angles of the second cover (41) and the second guide half wheel (51) are the same; The guide rail (3) is composed of two rails (30) connected together; the two rails (30) are spaced apart and are fixedly connected to the scraper conveyor body (1); the first cover (40) is fixedly connected to the guide rail (3); a slider (8) is slidably connected on the rail (30); one end of the second cover (41) is fixedly connected to the slider (8) on the left rail (30) by bolts (9); the other end of the second cover (41) is hinged to the slider (8) on the right rail (30); the guide rail (3) is connected to a drive assembly (10) that drives the second cover (41) to move and rotate. The drive assembly (10) includes two drive cylinders (100), the cylinder bodies of the two drive cylinders (100) are fixedly connected to the guide rail (3); the piston rod ends of the two drive cylinders (100) are respectively connected to the second cover (41) through a fixing assembly; the fixing assembly includes a fixing ear plate (101), a connecting ear plate (102) and a pin (103); the fixing ear plate (101) is fixedly connected to the second cover (41), and the connecting ear plate (102) is fixedly connected to the piston rod of the drive cylinder (100); the pin (103) passes through the fixing ear plate (101) and is inserted into the connecting ear plate (102). After the pin (103) is inserted into the connecting ear, the upper end face of the pin (103) is higher than the lower end face of the second cover (41).

2. The scraper conveyor according to claim 1, characterized in that: The two guide wheels (5) are connected by a transmission gear (11), and there are at least three transmission gears (11). The transmission gears (11) are rotatably connected to the guide cover (4). Both guide wheels (5) are provided with teeth (12) that mesh with the transmission gears (11). The first guide half-wheel (50) and the second guide half-wheel (51) in the upper guide wheel (5) are both fixedly connected to a semi-circular toothed rail, and the first guide half-wheel (50) is provided with a power component connected to the semi-circular toothed rail.

3. The scraper conveyor according to claim 2, characterized in that: The power assembly includes a connecting seat (14) and a geared motor (15). The connecting seat (14) is connected to the first cover (40) through a first lifting cylinder (16). The housing of the geared motor (15) is fixedly connected to the connecting seat (14). A drive gear (17) that meshes with a semi-annular toothed track is fixedly connected to the output shaft of the geared motor (15).

4. The scraper conveyor according to claim 1, characterized in that: The connecting assembly (7) includes a second lifting cylinder (70) and a lifting plate (71). The two ends of the second lifting cylinder (70) are fixedly connected to the second cover (41) and the lifting plate (71) respectively. A positioning seat (72) is fixedly connected to the first cover (40), and a positioning pin (73) that is inserted into the positioning seat (72) is fixedly connected to the lifting plate (71).

5. The scraper conveyor according to claim 4, characterized in that: The lifting plate (71) is fixedly connected with a limiting pin (74); the second cover (41) is provided with a through hole that cooperates with the limiting pin (74), and the limiting pin (74) can pass through the through hole and contact the second guide half wheel (51) in the guide wheel (5) located at the top.

6. The scraper conveyor according to claim 1, characterized in that: The second cover (41) is fixedly connected to a connecting chain plate (18), and the connecting chain plate (18) and the connecting ear plate (102) are connected by a chain (19).

7. The scraper conveyor according to claim 1, characterized in that: The first guide half-wheel (50) and the second guide half-wheel (51) are rotatably connected to the first support wheel (20) and the second support wheel (21); the first support wheel (20) is horizontally arranged and the second support wheel (21) is vertically arranged; the first cover (40) and the second cover (41) are provided with annular grooves (22) that cooperate with the second support wheel (21).

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