Belt conveyor cleaning device

Abstract

The application belongs to the technical field of secondary sweeper, and particularly relates to a belt conveyor cleaning device, which comprises a supporting frame, a chassis, a scraper assembly and a synchronous shaft. The scraper assembly comprises a base and a scraper, the base is fixedly connected with the chassis, the scraper is connected with the base, and a supporting spring is arranged between the scraper and the base. The scraper assembly is arranged on the chassis and comprises a plurality of scraper assemblies. The chassis is inserted with the supporting frame. The left and right ends of the supporting frame are respectively connected with a connecting assembly through connecting shafts. The connecting assembly comprises a connecting seat and a mounting frame. Through the insertion design of the supporting frame and the chassis and the rotatable structure of the connecting shaft, the whole assembly only needs to be rotated downward after the limiting is removed during replacement, so that the chassis can be pulled out from below. This process avoids the direct friction between the scraper and the surface of the belt, effectively overcomes the resistance caused by the downward pressure of the belt, saves labor and is efficient during replacement operation, and greatly reduces the risk of damaging the conveyor belt.

Description

Technical Field

[0001] This invention belongs to the technical field of two-stage sweepers, specifically relating to a belt conveyor sweeping device. Background Technology

[0002] When conveying viscous or impurity-containing materials, some material will adhere to the working surface of the conveyor belt. If these residual materials are not removed in a timely and effective manner, they will fall off with the return belt, causing environmental pollution, material waste, and potentially leading to a series of problems such as conveyor belt misalignment, accelerated wear of rollers and idlers, and in severe cases, even equipment damage and safety accidents. Therefore, a cleaning device is an indispensable key component of a belt conveyor. For example, utility model patent application number 202322996925.3 discloses a two-stage cleaner. When replacing the scraper, the operator usually needs to directly approach and operate the scraper assembly located under the conveyor belt. This process presents many inconveniences and risks:

[0003] First, when pulling out the base frame that carries the scraper assembly, the edge of the scraper may rub or snag against the lower surface of the conveyor belt, posing a risk of damaging the conveyor belt. Second, because the conveyor belt itself has a certain tension and sag, the downward pressure of the belt will create resistance on the base frame during the pulling out process, making the pulling operation laborious, especially in space-constrained working conditions.

[0004] Furthermore, existing multi-scraper structures often require individual adjustment of the scraper's contact pressure with the belt, making it difficult to ensure uniform pressure across all scrapers. This can lead to uneven wear in certain areas, reducing cleaning effectiveness and scraper lifespan. Additionally, when large, hard objects are accidentally present on the belt, the fixed scraper structure can easily become stuck, scratching the belt surface. Moreover, after prolonged use, impurities accumulate on the scraper's surface, affecting cleaning performance. Existing devices lack convenient online cleaning capabilities for this, typically requiring disassembly and cleaning, increasing maintenance complexity and downtime. Summary of the Invention

[0005] To address the aforementioned technical problems, the present invention provides a belt conveyor cleaning device that allows for safe and convenient scraper replacement, effectively avoids belt damage, and prevents scraper wear.

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

[0007] A belt conveyor cleaning device includes a support frame, a base frame, a scraper assembly, and a synchronous shaft; the scraper assembly includes a base and a scraper, the base is fixedly connected to the base frame, the scraper is connected to the base, and a support spring is provided between the scraper and the base; the scraper assembly is mounted on the base frame and there are several of them; the base frame is inserted into the support frame;

[0008] The left and right ends of the support frame are respectively connected to connecting components via connecting shafts; the connecting components include connecting seats and mounting frames, the connecting seats are slidably connected to the mounting frames, the connecting seats are provided with adjusting shafts, the adjusting shafts are fitted with adjusting springs connected to the mounting frames, the connecting seats are rotatably connected to the connecting shafts, and a support arm is fixedly connected to the connecting seats; a limiting component is provided between the connecting shaft and the connecting seat in the left connecting component to limit the rotation of the connecting shaft;

[0009] The synchronous shaft is rotatably connected to the support arm; an adjusting arm is fixed at each end of the synchronous shaft, and a pressure plate that cooperates with the adjusting arm is sleeved on the adjusting shaft; the synchronous shaft is connected to an adjusting drive assembly, which drives the synchronous shaft to rotate; an elastic clamping assembly connected to the scraper is provided on the synchronous shaft.

[0010] The scraper is provided with a hinge shaft, and the base is provided with a sliding groove connected to the hinge shaft; two support springs are provided between the scraper and the base.

[0011] The limiting assembly includes a limiting pressure plate and a limiting ring. The limiting pressure plate is slidably connected to the connecting shaft, and a limiting block is provided on the limiting pressure plate. Both the connecting shaft and the connecting seat are provided with limiting grooves that connect to the limiting block. The limiting ring is threadedly connected to the connecting shaft.

[0012] A clamping plate is fixedly connected to the limiting pressure plate, and the clamping plate is provided with a trapezoidal groove; a trapezoidal block that mates with the trapezoidal groove is provided on the base frame.

[0013] It also includes a cleaning assembly, which includes a cleaning shaft, a cleaning plate, and a connecting block. The connecting block is slidably connected to the support frame, and the cleaning plate is hinged to the connecting block. A torsion spring is provided at the hinge. One end of the cleaning shaft is rotatably connected to the connecting block. A lever is provided on the cleaning shaft. By rotating the cleaning shaft, the lever is driven to contact the cleaning plate, thereby driving the cleaning plate to rotate. A limiting shaft that cooperates with the lever is provided on the mounting bracket in the right-end connecting assembly.

[0014] The support frame is fixed with a support ring that is connected to the cleaning shaft.

[0015] The adjustment drive assembly includes a worm gear and a worm. The worm gear is fixedly connected to the synchronous shaft, and the worm is rotatably connected to the support arm and meshes with the worm gear.

[0016] The elastic clamping assembly includes a clamping baffle and a clamping spring; the clamping baffle is rotatably connected to a synchronous shaft, and a connecting plate is fixed on both the synchronous shaft and the clamping baffle; the two ends of the clamping spring are respectively fixedly connected to the two connecting plates.

[0017] The elastic clamping assembly also includes an alarm, and both connecting plates are provided with connecting screws, which are connected to the alarm via wires.

[0018] Compared with the prior art, the beneficial effects of this invention are:

[0019] With its plug-in design between the support frame and the base frame, and a rotatable connecting shaft, replacement is as simple as releasing the limiting mechanism and rotating the entire assembly downwards to pull the base frame out from below. This process avoids direct friction and scratches between the scraper and the belt surface, while effectively overcoming the resistance caused by the downward pressure of the belt. This makes the replacement operation labor-saving and efficient, and greatly reduces the risk of damaging the conveyor belt.

[0020] By setting up a synchronous shaft, adjusting arm, and adjusting drive assembly, the pre-compression force of the adjusting spring can be adjusted synchronously, thereby ensuring uniform contact pressure between all scrapers and the belt. This overcomes the problem of localized uneven wear caused by uneven pressure.

[0021] The hinged design of the scraper and the base, together with the support spring or a special elastic clamping component, allows the scraper to automatically lift or rotate when it encounters a large hard object on the belt, thereby avoiding the hard object and effectively preventing scratches and damage to the belt surface.

[0022] The cleaning component allows for the direct removal of impurities adhering to the working surface of the scraper by operating the cleaning shaft and cleaning plate without disassembling the scraper. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of the present invention in one direction;

[0024] Figure 2 yes Figure 1 A magnified view of a section at point A in the middle;

[0025] Figure 3 yes Figure 1 A magnified view of a section at point B in the middle;

[0026] Figure 4 This is a schematic diagram of the structure from another direction of the present invention;

[0027] Figure 5 yes Figure 4 A magnified view of a section at point C;

[0028] Figure 6 This is a cross-sectional view of the present invention;

[0029] Figure 7 yes Figure 6 A magnified view of a section at point D;

[0030] Figure 8 This is a schematic diagram of the structure of the connecting component of the present invention;

[0031] Figure 9 This is a schematic diagram of the connection structure between the support frame, the base frame, and the scraper assembly of the present invention;

[0032] Wherein: 1 is the support frame, 100 is the connecting shaft, 2 is the base frame, 3 is the scraper assembly, 30 is the base, 31 is the scraper, 32 is the support spring, 33 is the hinge shaft, 34 is the slide groove, 4 is the synchronous shaft, 5 is the connecting assembly, 50 is the connecting seat, 51 is the mounting bracket, 52 is the adjusting shaft, 53 is the adjusting spring, 54 is the support arm, 6 is the limiting assembly, 60 is the limiting pressure plate, 61 is the limiting ring, 62 is the limiting block, 63 is the limiting groove, and 64 is the pressure... 65 is a trapezoidal block, 7 is an adjusting arm, 8 is a pressure plate, 9 is an adjusting drive assembly, 90 is a worm gear, 91 is a worm, 10 is an elastic clamping assembly, 101 is a clamping baffle, 102 is a clamping spring, 103 is a connecting plate, 104 is a connecting screw, 105 is an alarm, 11 is a cleaning assembly, 110 is a cleaning shaft, 111 is a cleaning plate, 112 is a connecting block, 113 is a lever, 114 is a limit shaft, and 115 is a support ring. Detailed Implementation

[0033] 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.

[0034] like Figure 1 , Figure 2 , Figure 6 , Figure 7 and Figure 8 As shown, a belt conveyor cleaning device includes a support frame 1, a base frame 2, a scraper assembly 3, and a synchronous shaft 4. Several scraper assemblies 3 are mounted on the base frame 2, and the base frame 2 is inserted into the support frame 1. When the scraper assembly 3 needs to be replaced, the base frame 2 can be pulled out for replacement. The scraper assembly 3 includes a base 30 and a scraper 31. The base 30 is fixedly connected to the base frame 2 (specifically via bolts), and the scraper 31 is connected to the base 30. A support spring 32 is provided between the scraper 31 and the base 30, with both ends of the support spring 32 fixedly connected to the scraper 31 and the base 30, respectively.

[0035] The left and right ends of the support frame 1 are respectively connected to the connecting components 5 via connecting shafts 100, and the connecting shafts 100 are fixedly connected to the support frame 1. The connecting component 5 includes a connecting seat 50 and a mounting frame 51. The connecting seat 50 is slidably connected to the mounting frame 51, and the connecting seat 50 is provided with an adjusting shaft 52, which is slidably connected to the mounting frame 51. During installation, the mounting frame 51 is fixedly connected to the frame of the belt conveyor by bolts.

[0036] An adjusting spring 53 connected to the mounting bracket 51 is sleeved on the adjusting shaft 52. The connecting seat 50 is rotatably connected to the connecting shaft 100. A support arm 54 is fixedly connected to the connecting seat 50. A limiting component 6 is provided between the connecting shaft 100 and the connecting seat 50 in the left connecting assembly 5. The rotation of the connecting shaft 100 is restricted by the limiting component 6.

[0037] When replacing the scraper assembly 3, first release the restriction of the limiting component 6 on the connecting shaft 100; then drive the connecting shaft 100 to rotate, causing the support frame 1, the base frame 2, and the scraper assembly 3 to rotate downwards; after the scraper assembly 3 has rotated to the bottom, pull out the base frame 2 for replacement. This replacement method can avoid damaging the belt during the pulling process, and also avoid the problem of difficulty in pulling out due to the resistance generated by the downward pressure of the belt.

[0038] Synchronous shaft 4 is rotatably connected to support arm 54; adjusting arms 7 are fixed at both ends of synchronous shaft 4, and pressure plates 8 that cooperate with adjusting arms 7 are sleeved on adjusting shaft 52; synchronous shaft 4 is connected to adjusting drive assembly 9, which drives synchronous shaft 4 to rotate. During the rotation of synchronous shaft 4, it will drive adjusting arms 7 to press down pressure plates 8, thereby synchronously changing the pre-compression of adjusting spring 53; avoiding the difference in pre-compression of adjusting spring 53 at the left and right ends due to individual adjustment, and thus avoiding uneven wear caused by inconsistent contact pressure between scraper assembly 3 and belt.

[0039] An elastic clamping assembly 10 connected to a scraper 31 is provided on the synchronous shaft 4. The scraper 31 is connected to the base 30. When a hard object is attached to the belt, the scraper 31 overcomes the resistance of the elastic clamping assembly 10 and rotates, thereby avoiding scratching the belt.

[0040] Furthermore, such as Figure 2 As shown, the scraper 31 is provided with a hinge shaft 33, and the base 30 is provided with a sliding groove 34 connected to the hinge shaft 33; two support springs 32 are provided between the scraper 31 and the base 30. Each scraper 31 can move up and down independently. When a hard object is attached to the belt, the scraper 31 will move down and rotate, which can further prevent the belt from being scratched.

[0041] Furthermore, such as Figure 2 , Figure 7 , Figure 8As shown, the limiting assembly 6 includes a limiting pressure plate 60 and a limiting ring 61. The limiting pressure plate 60 is slidably connected to the connecting shaft 100. A limiting block 62 is provided on the limiting pressure plate 60. Both the connecting shaft 100 and the connecting seat 50 are provided with limiting grooves 63 that connect to the limiting block 62. The limiting ring 61 is threadedly connected to the connecting shaft 100.

[0042] When a limit is required, tightening the limit ring 61 causes the limit ring 61 to push the limit pressure plate 60 to move until the limit block 62 is inserted into the limit groove 63 on the connecting shaft 100 and the connecting seat 50; at this time, the connecting shaft 100 cannot be rotated.

[0043] When it is necessary to release the restriction, loosen the limiting ring 61 and pull the limiting pressure plate 60 outward until the limiting block 62 separates from the limiting groove 63 on the connecting shaft 100 and the connecting seat 50; at this time, the connecting shaft 100 can rotate.

[0044] Furthermore, such as Figure 7 As shown, a clamping plate 64 is fixedly connected to the limiting pressure plate 60, and the clamping plate 64 is provided with a trapezoidal groove; the base frame 2 is provided with a trapezoidal block 65 that mates with the trapezoidal groove. Specifically: the base frame 2 is inserted into the support frame 1, and the support frame 1 is provided with a slot. The right side of the slot is closed, that is, the base frame 2 can only be pulled out from the left side.

[0045] After the scraper assembly 3 is replaced, the base frame 2 is reinserted into the slot of the support frame 1 from the left side; then the connecting shaft 100 is rotated in the opposite direction to make the support frame 1, the base frame 2 and the scraper assembly 3 rotate upward and reset; finally, the limiting ring 61 is tightened. During the process of pushing the limiting pressure plate 60, the limiting ring 61 will cause the trapezoidal groove on the pressure plate 64 to engage with the trapezoidal block 65, thereby playing a fixing role.

[0046] Furthermore, impurities may accumulate on the scraper 31 during long-term use; disassembling and cleaning it would be inconvenient. Therefore, a cleaning component 11 is also included.

[0047] like Figures 1 to 3 As shown, the cleaning assembly 11 includes a cleaning shaft 110, a cleaning plate 111, and a connecting block 112. The connecting block 112 is slidably connected to the support frame 1, and the cleaning plate 111 is hinged to the connecting block 112. A torsion spring (not shown in the figure) is provided at the hinge. One end of the cleaning shaft 110 is rotatably connected to the connecting block 112; the connecting block 112 can be moved by pulling the cleaning shaft 110.

[0048] The cleaning shaft 110 is equipped with a lever 113. By rotating the cleaning shaft 110, the lever 113 is driven to contact the cleaning plate 111, which causes the cleaning plate 111 to rotate. The mounting bracket 51 in the right end connecting assembly 5 is equipped with a limiting shaft 114 that cooperates with the lever 113. The function of the limiting shaft 114 is to restrict the rotation of the lever 113 when cleaning is not performed.

[0049] When cleaning is required, first pull the cleaning shaft 110 outward until the limit shaft 114 separates from the lever 113; then rotate the cleaning shaft 110 clockwise, and the torsion spring releases elastic potential energy to make the cleaning plate 111 contact the scraper 31; finally, by alternately pulling the cleaning shaft 110 outward and inward, the cleaning plate 111 scrapes off the impurities attached to the scraper 31.

[0050] After cleaning is completed, the cleaning shaft 110 should be rotated clockwise to make the lever 113 contact the cleaning plate 111, causing the cleaning plate 111 to rotate (the torsion spring generates elastic potential energy). Then, the cleaning shaft 110 should be pushed inward until the lever 113 moves to the limit shaft 114. Finally, the external force should be removed, and the torsion spring should release its elastic potential energy, causing the lever 113 to contact the limit shaft 114. The limit shaft 114 restricts the rotation of the lever 113, ensuring that the cleaning plate 111 is in the open state, that is, it does not contact the scraper 31 and does not affect the normal operation of the scraper 31.

[0051] Furthermore, such as Figure 2 and Figure 9 As shown, in order to improve the support effect, a support ring 115 connected to the cleaning shaft 110 is fixed on the support frame 1. The cleaning shaft 110 is a round shaft, and the support ring 115 is provided with a corresponding round through hole; therefore, the support ring 115 will not hinder the rotation and movement of the cleaning shaft 110.

[0052] Furthermore, such as Figure 2 As shown, the adjustment drive assembly 9 includes a worm gear 90 and a worm 91. The worm gear 90 is fixedly connected to the synchronous shaft 4, and the worm 91 is rotatably connected to the support arm 54 and meshes with the worm gear 90. By rotating the worm 91, the worm gear 90 and the synchronous shaft 4 can be rotated; at the same time, the self-locking characteristic of the worm gear 90 and the worm 91 is used to fix the position of the synchronous shaft 4.

[0053] Furthermore, such as Figure 4 , Figure 5 As shown, the elastic clamping assembly 10 includes an alarm 105, a clamping baffle 101, and a clamping spring 102; the alarm 105 can be installed on the frame or mounting bracket 51 of the belt conveyor as needed.

[0054] The clamping baffle 101 is rotatably connected to the synchronous shaft 4. Both the synchronous shaft 4 and the clamping baffle 101 are fixed with connecting plates 103. The two ends of the clamping spring 102 are fixedly connected to the two connecting plates 103 respectively. Both connecting plates 103 are provided with connecting screws 104. The two connecting screws 104 are connected to the alarm 105 through wires respectively.

[0055] The alarm 105 can be an alarm light or a buzzer and is powered. When a hard object adheres to the belt, the scraper 31 overcomes the resistance of the compression spring 102 and pushes the compression baffle 101 to rotate. When the hard object is large, the scraper 31 will cause the compression baffle 101 to change a large angle, and the two connecting screws 104 will contact each other, making the circuit conductive. The alarm 105 will then activate, alerting the staff that a large hard object is attached to the belt and needs to be removed promptly by other means. Therefore, the two connecting screws 104 act as a "switch".

[0056] 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 belt conveyor cleaning device, characterized in that: It includes a support frame (1), a base frame (2), a scraper assembly (3), and a synchronous shaft (4); the scraper assembly (3) includes a base (30) and a scraper (31), the base (30) is fixedly connected to the base frame (2), the scraper (31) is connected to the base (30), and a support spring (32) is provided between the scraper (31) and the base (30); the scraper assembly (3) is set on the base frame (2) and there are several of them; the base frame (2) is inserted into the support frame (1); The left and right ends of the support frame (1) are respectively connected to the connecting components (5) via connecting shafts (100); the connecting components (5) include a connecting seat (50) and a mounting frame (51). The connecting seat (50) is slidably connected to the mounting frame (51). An adjusting shaft (52) is provided on the connecting seat (50). An adjusting spring (53) connected to the mounting frame (51) is sleeved on the adjusting shaft (52). The connecting seat (50) is rotatably connected to the connecting shaft (100). A support arm (54) is fixedly connected to the connecting seat (50). A limiting component (6) is provided between the connecting shaft (100) and the connecting seat (50) in the left connecting component (5). The rotation of the connecting shaft (100) is restricted by the limiting component (6). The synchronous shaft (4) is rotatably connected to the support arm (54); the two ends of the synchronous shaft (4) are respectively fixed with adjusting arms (7), and the adjusting shaft (52) is fitted with a pressure plate (8) that cooperates with the adjusting arm (7); the synchronous shaft (4) is connected to an adjusting drive assembly (9), which drives the synchronous shaft (4) to rotate; the synchronous shaft (4) is provided with an elastic pressing assembly (10) connected to the scraper (31).

2. The belt conveyor cleaning device according to claim 1, characterized in that: The scraper (31) is provided with a hinge shaft (33), and the base (30) is provided with a groove (34) connected to the hinge shaft (33); two support springs (32) are provided between the scraper (31) and the base (30).

3. The belt conveyor cleaning device according to claim 1, characterized in that: The limiting component (6) includes a limiting pressure plate (60) and a limiting ring (61). The limiting pressure plate (60) is slidably connected to the connecting shaft (100). A limiting block (62) is provided on the limiting pressure plate (60). The connecting shaft (100) and the connecting seat (50) are both provided with limiting grooves (63) that are connected to the limiting block (62). The limiting ring (61) is threadedly connected to the connecting shaft (100).

4. A belt conveyor cleaning device according to claim 3, characterized in that: A clamping plate (64) is fixedly connected to the limiting pressure plate (60), and a trapezoidal groove is provided on the clamping plate (64); a trapezoidal block (65) that cooperates with the trapezoidal groove is provided on the base frame (2).

5. A belt conveyor cleaning device according to claim 3, characterized in that: It also includes a cleaning assembly (11), which includes a cleaning shaft (110), a cleaning plate (111), and a connecting block (112). The connecting block (112) is slidably connected to the support frame (1), and the cleaning plate (111) is hinged to the connecting block (112). A torsion spring is provided at the hinge. One end of the cleaning shaft (110) is rotatably connected to the connecting block (112). A lever (113) is provided on the cleaning shaft (110). By rotating the cleaning shaft (110), the lever (113) is driven to contact the cleaning plate (111), thereby driving the cleaning plate (111) to rotate. A limiting shaft (114) that cooperates with the lever (113) is provided on the mounting bracket (51) in the right end connecting assembly (5).

6. A belt conveyor cleaning device according to claim 5, characterized in that: The support frame (1) is fixed with a support ring (115) that is connected to the cleaning shaft (110).

7. A belt conveyor cleaning device according to claim 1, characterized in that: The adjustment drive assembly (9) includes a worm wheel (90) and a worm (91). The worm wheel (90) is fixedly connected to the synchronous shaft (4), and the worm (91) is rotatably connected to the support arm (54) and meshes with the worm wheel (90).

8. A belt conveyor cleaning device according to claim 1, characterized in that: The elastic clamping assembly (10) includes a clamping baffle (101) and a clamping spring (102); the clamping baffle (101) is rotatably connected to the synchronous shaft (4), and a connecting plate (103) is fixed on both the synchronous shaft (4) and the clamping baffle (101). The two ends of the clamping spring (102) are respectively fixedly connected to the two connecting plates (103).

9. A belt conveyor cleaning device according to claim 8, characterized in that: The elastic clamping assembly (10) also includes an alarm (105), and each of the two connecting plates (103) is provided with a connecting screw (104). The two connecting screws (104) are connected to the alarm (105) through wires respectively.

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