Bucket wheel machine raw coal screening device

Abstract

The application relates to a bucket wheel machine technology field, and particularly discloses a raw coal screening device of a bucket wheel machine, which comprises a screening frame, a shunt frame is arranged on the screening frame, side slides are arranged on the left side and the right side of the shunt frame, and the side slides are gradually inclined downward along the direction away from the middle part of the shunt frame; and a fishbone frame is arranged at the front end of the screening frame. Through cooperation of the shunt frame and the side slides, uniform distribution and natural sliding of raw coal are realized, and the screening efficiency is improved; meanwhile, impurities in the raw coal are also hung on the shunt frame, so that a certain filtering effect is achieved; and the fishbone frame can effectively filter the impurities, improve the cleanliness of the raw coal, and avoid affecting the normal use of the raw coal.

Description

Technical Field

[0001] This application relates to the field of bucket wheel excavator technology, and in particular to a raw coal screening device for a bucket wheel excavator. Background Technology

[0002] Bucket wheel stacker-reclaimer, also known as a bucket wheel machine, is a high-efficiency loading and unloading machine used in large dry bulk cargo yards that can both stack and reclaim materials.

[0003] The raw coal arriving at the plant is stacked in the coal shed by a bucket wheel excavator to provide the boiler with coal of the required particle size for combustion. For a long time, the coal arriving by train has contained a large amount of foam strips, woven bags, and other materials. After entering the crushing system, these materials become entangled inside the equipment, reducing the equipment's output, increasing the chance of blockages, seriously affecting safe and stable operation, and increasing the labor intensity of employees. Utility Model Content

[0004] The purpose of this application is to provide a raw coal screening device for a bucket wheel excavator to solve the above-mentioned problems.

[0005] To achieve the above objectives, the technical solution of this application is as follows:

[0006] A bucket wheel excavator raw coal screening device includes a screening frame, a diversion frame on the screening frame, side slides on both the left and right sides of the diversion frame, and the side slides gradually slope downwards in a direction away from the center of the diversion frame; a fishbone frame is provided at the front end of the screening frame.

[0007] Preferably, the screening frame is provided with connecting rods on both the left and right sides, pointing from the rear end of the screening frame to the front end, and the connecting rods gradually tilt downwards.

[0008] Preferably, a filter rack is provided at the bottom of the diversion rack.

[0009] Preferably, the filter frame includes a plurality of first filter rods arranged in the front-back direction, and a first scraper is slidably provided on the filter frame. The first scraper includes a first scraping ring slidably sleeved on the first filter rod, and two adjacent first scraping rings are connected by a first connecting rod.

[0010] Preferably, the side slide rail includes a plurality of inclined second filter rods, and a second scraping frame is slidably disposed on the side slide rail. The second scraping frame includes a second scraping ring and a second connecting rod. The second scraping ring is slidably sleeved on the second filter rod, and two adjacent second scraping rings are connected by the second connecting rod.

[0011] Preferably, one of the second links is rotatably provided with a snap hook for engaging with the diverter.

[0012] Preferably, a first lifting assembly and a second lifting assembly are connected to both the left and right sides of the screening frame, and the ends of the first lifting assembly and the second lifting assembly away from the screening frame are connected to the cantilever frame of the bucket wheel excavator.

[0013] Preferably, the first lifting assembly includes a first lifting rod and a second lifting rod. One end of the first lifting rod is provided with a first connecting plate, and the first connecting plate is provided with a plurality of first connecting holes in the circumferential direction. The other end of the first lifting rod and one end of the second lifting rod are screwed to the same first adjusting ring. The threads on the first lifting rod and the second lifting rod have opposite directions of rotation. The other end of the second lifting rod is hinged to the screening frame.

[0014] Preferably, the second hoisting assembly includes a third hoisting rod and a fourth hoisting rod. One end of the third hoisting rod is provided with a second connecting plate, and the second connecting plate is provided with a plurality of second connecting holes in the circumferential direction. The other end of the third hoisting rod and one end of the fourth hoisting rod are screwed to the same second adjusting ring. The threads on the third hoisting rod and the fourth hoisting rod have opposite directions of rotation. The other end of the fourth hoisting rod is hinged to a sliding sleeve, and the sliding sleeve is in sliding cooperation with the screening frame.

[0015] Preferably, the screening frame is provided with sliding rods on both the left and right sides, and the sliding sleeve is slidably sleeved on the sliding rods; two limiting sleeves are screwed onto the sliding rods, and the two limiting sleeves are respectively located on both sides of the length direction of the sliding sleeve.

[0016] The raw coal screening device of the bucket wheel excavator disclosed in this application achieves uniform distribution and natural downward sliding of raw coal through the cooperation of the diversion frame and the side slide, thereby improving screening efficiency. At the same time, impurities in the raw coal are also caught in the diversion frame, thus playing a certain filtering role. The fishbone frame can also effectively filter impurities, improve the cleanliness of the raw coal, and avoid affecting the normal use of the raw coal in the future. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this application;

[0018] Figure 2 for Figure 1 Enlarged view of a portion of point A in the middle;

[0019] Figure 3 for Figure 1 Enlarged view of a portion of point B in the middle;

[0020] Figure 4 for Figure 1 Enlarged view of a portion of point C in the middle;

[0021] Figure 5 for Figure 1 Enlarged view of a portion of point D;

[0022] Figure 6 This is another schematic diagram of the overall structure of this application.

[0023] In the picture:

[0024] 1. Screening frame; 10. First filter rod; 2. Diverting frame; 20. Second filter rod; 3. Fishbone frame; 4. Connecting rod; 50. First lifting rod; 51. Second lifting rod; 52. First adjusting ring; 53. First connecting plate; 54. First connecting hole; 60. Third lifting rod; 61. Fourth lifting rod; 62. Second adjusting ring; 63. Second connecting plate; 64. Second connecting hole; 70. Second scraping ring; 71. Second connecting rod; 72. Snap hook; 80. Sliding rod; 81. Limiting sleeve; 82. Sliding sleeve; 83. First scraping ring; 84. First connecting rod. Detailed Implementation

[0025] The present application will now be described in further detail with reference to the accompanying drawings. The drawings are simplified schematic diagrams, illustrating only the basic structure of the present application, and therefore only show the components relevant to the present application.

[0026] like Figure 1-6 As shown, the raw coal screening device of the bucket wheel excavator includes a screening frame 1, a diversion frame 2 on the screening frame 1, and side slides on both the left and right sides of the diversion frame 2. The side slides gradually slope downwards in a direction away from the middle of the diversion frame 2. A fishbone frame 3 is provided at the front end of the screening frame 1.

[0027] The raw coal screening device of the bucket wheel excavator specifically includes a screening frame 1, which serves as the basic support structure for the entire device and bears the load of other components.

[0028] A diversion frame 2 is fixedly installed on the screening frame 1. The main function of the diversion frame 2 is to initially divert the incoming raw coal, so that the raw coal can be distributed more evenly to the subsequent screening area. Side slides are provided on both the left and right sides of the diversion frame 2, and the side slides gradually slope downwards away from the center of the diversion frame 2. This allows the raw coal to slide naturally down the inclined side slides after diversion, increasing the fluidity of the raw coal in the device and the screening efficiency.

[0029] The front end of the screening frame 1 is equipped with a fishbone frame 3. The unique structure of the fishbone frame 3 can initially block impurities in the raw coal.

[0030] The combination of the diversion frame 2 and the side slide rails enables the raw coal to be evenly distributed and slide down naturally, thus improving the screening efficiency. At the same time, impurities in the raw coal are also caught in the diversion frame 2, thus playing a certain filtering role. The fishbone frame 3 can also effectively filter impurities, improve the cleanliness of the raw coal, and avoid affecting the normal use of the raw coal in the future.

[0031] In some further embodiments, connecting rods 4 are provided on both the left and right sides of the screening frame 1, pointing from the rear end of the screening frame 1 to the front end, and the connecting rods 4 gradually tilt downward.

[0032] Connecting rods 4 are fixedly installed on both the left and right sides of the screening frame 1. The connecting rods 4 gradually slope downward from the rear end to the front end of the screening frame 1. The installation of connecting rods 4 enhances the overall structural strength of the screening frame 1, enabling it to better withstand the impact and weight of raw coal.

[0033] In some further embodiments, a filter rack is provided at the bottom of the diversion rack 2.

[0034] A filter frame is installed at the bottom of the diverter 2, and it is one of the key components of the entire screening device. It further filters and screens the raw coal after it has been diverted by the diverter 2, blocking larger impurities. The presence of the filter frame greatly improves the screening quality of the raw coal, ensuring that the raw coal entering the crushing system meets the requirements and reducing the possibility of subsequent equipment failures and blockages.

[0035] In some further embodiments, the filter frame includes a plurality of first filter rods 10 arranged in the front-back direction, and a first scraper is slidably provided on the filter frame. The first scraper includes a first scraping ring 83 slidably sleeved on the first filter rods 10, and two adjacent first scraping rings 83 are connected by a first connecting rod 84.

[0036] The filter frame includes several first filter rods 10 arranged along the front-to-back direction, with gaps between them to control the screening particle size of the raw coal. A first scraper frame is slidably mounted on the filter frame, including first scraper rings 83 slidably sleeved on the first filter rods 10. Adjacent first scraper rings 83 are connected by a first connecting rod 84. When cleaning the filter frame is required, the first scraper frame can be pushed to slide along the first filter rods 10. During the sliding process, the first scraper rings 83 scrape off impurities and particles stuck between the first filter rods 10, keeping the filter frame unobstructed and ensuring screening efficiency. This design facilitates the cleaning and maintenance of the filter frame, reduces manual cleaning workload, and improves work efficiency.

[0037] In some further embodiments, the side slide rail includes a plurality of inclined second filter rods 20, and a second scraping frame is slidably disposed on the side slide rail. The second scraping frame includes a second scraping ring 70 and a second connecting rod 71. The second scraping ring 70 is slidably sleeved on the second filter rod 20, and two adjacent second scraping rings 70 are connected by the second connecting rod 71.

[0038] The side slide rail includes several inclined second filter rods 20, which also serve to screen the raw coal. A second scraper frame is slidably mounted on the side slide rail. The second scraper frame includes a second scraping ring 70 and a second connecting rod 71. The second scraping ring 70 is slidably fitted onto the second filter rod 20, and adjacent second scraping rings 70 are connected by the second connecting rod 71. Similar to the first scraper frame, when the second filter rod 20 on the side slide rail is blocked by impurities, the second scraper frame is pushed to slide along the second filter rod 20, and the second scraping ring 70 scrapes away the impurities, ensuring the normal screening function of the side slide rail. This slidable scraper frame design makes cleaning the side slide rail more convenient and effectively extends the service life of the device.

[0039] In some further embodiments, one of the second links 71 is rotatably provided with a snap hook 72 for engaging with the diverter 2.

[0040] When the second scraper is not needed or needs to be secured, the snap hook 72 can be rotated to engage with the diverter 2, fixing the second scraper on the side slide and preventing it from sliding freely during operation, which would affect the screening effect. When cleaning the side slide is required, simply remove the snap hook 72 from the diverter 2 to push the second scraper for cleaning. This design increases the flexibility and stability of the second scraper's use.

[0041] In some further embodiments, a first hoisting assembly and a second hoisting assembly are connected to both the left and right sides of the screening frame 1, and the ends of the first hoisting assembly and the second hoisting assembly away from the screening frame 1 are connected to the cantilever frame of the bucket wheel excavator.

[0042] The screening device is suspended on the cantilever frame of the bucket wheel excavator using a first and a second hoisting assembly, allowing the device to move along with the cantilever frame and screen raw coal at different locations. This hoisting method makes the installation and disassembly of the screening device more convenient, and also facilitates adjusting the position of the screening device according to actual working needs.

[0043] In some further embodiments, the first lifting assembly includes a first lifting rod 50 and a second lifting rod 51. One end of the first lifting rod 50 is provided with a first connecting plate 53, and the first connecting plate 53 is provided with a plurality of first connecting holes 54 in the circumferential direction. The other end of the first lifting rod 50 and one end of the second lifting rod 51 are screwed to the same first adjusting ring 52. The threads on the first lifting rod 50 and the second lifting rod 51 have opposite directions of rotation. The other end of the second lifting rod 51 is hinged to the screening frame 1.

[0044] When the first adjusting ring 52 is rotated, the first lifting rod 50 and the second lifting rod 51 move closer to each other or further away from each other, thereby adjusting the height of the screening frame 1.

[0045] When it is necessary to adjust the front and rear positions of the screening frame 1, the first connecting plate 53 on it can be rotated by rotating the first lifting rod 50 to rotate to different threaded holes on the cantilever frame. Then the first connecting plate 53 can be locked with bolts to achieve the adjustment and fixation of the first lifting rod 50.

[0046] In some further embodiments, the second lifting assembly includes a third lifting rod 60 and a fourth lifting rod 61. One end of the third lifting rod 60 is provided with a second connecting plate 63, and the second connecting plate 63 is provided with a plurality of second connecting holes 64 in the circumferential direction. The other end of the third lifting rod 60 and one end of the fourth lifting rod 61 are screwed to the same second adjusting ring 62. The threads on the third lifting rod 60 and the fourth lifting rod 61 have opposite directions of rotation. The other end of the fourth lifting rod 61 is hinged to a sliding sleeve 82, which slides in cooperation with the screening frame 1.

[0047] The second hoisting assembly has the same adjustment mode as the first hoisting assembly. The difference is that the third hoisting rod 60 and the screening frame 1 are slidably engaged through the sliding sleeve 82 to avoid jamming when the second hoisting assembly and the first hoisting assembly extend and retract synchronously.

[0048] In some further embodiments, sliding rods 80 are provided on both the left and right sides of the screening frame 1, and sliding sleeves 82 are slidably sleeved on the sliding rods 80; two limiting sleeves 81 are screwed onto the sliding rods 80, and the two limiting sleeves 81 are respectively located on both sides of the length direction of the sliding sleeves 82.

[0049] Specifically, the sliding sleeve is slidably mounted on the sliding rod 80. When the second adjusting ring 62 needs to be adjusted, the two limiting sleeves 81 can be rotated to move them away from the sliding sleeve 82. Then the length or angle of the first lifting assembly and the second lifting assembly can be adjusted to prevent interference.

[0050] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the scope of protection of this application.

Claims

1. A raw coal screening device for a bucket wheel excavator, characterized in that, Includes a screening frame (1), on which a diversion frame (2) is provided, and side slides are provided on both the left and right sides of the diversion frame (2). The side slides gradually slope downwards in a direction away from the middle of the diversion frame (2); and a fishbone rack (3) is provided at the front end of the screening frame (1).

2. The raw coal screening device for a bucket wheel excavator according to claim 1, characterized in that, The screening frame (1) is provided with connecting rods (4) on both the left and right sides, pointing from the rear end of the screening frame (1) to the front end, and the connecting rods (4) gradually tilt downward.

3. The raw coal screening device for a bucket wheel excavator according to claim 1, characterized in that, The bottom of the diverter (2) is provided with a filter rack.

4. The raw coal screening device for a bucket wheel excavator according to claim 3, characterized in that, The filter frame includes a plurality of first filter rods (10) arranged in the front-back direction. A first scraper is slidably provided on the filter frame. The first scraper includes a first scraping ring (83) slidably sleeved on the first filter rod (10). Two adjacent first scraping rings (83) are connected by a first connecting rod (84).

5. The raw coal screening device for a bucket wheel excavator according to claim 1, characterized in that, The side slide rail includes several inclined second filter rods (20), and a second scraper is slidably provided on the side slide rail. The second scraper includes a second scraping ring (70) and a second connecting rod (71). The second scraping ring (70) is slidably sleeved on the second filter rod (20), and two adjacent second scraping rings (70) are connected by the second connecting rod (71).

6. The raw coal screening device for a bucket wheel excavator according to claim 5, characterized in that, One of the second links (71) is rotatably provided with a snap hook (72) for engaging with the diverter (2).

7. The raw coal screening device for a bucket wheel excavator according to claim 1, characterized in that, The screening frame (1) is connected to a first hoisting component and a second hoisting component on both the left and right sides. The ends of the first hoisting component and the second hoisting component that are away from the screening frame (1) are connected to the cantilever frame of the bucket wheel machine.

8. The raw coal screening device for a bucket wheel excavator according to claim 7, characterized in that, The first hoisting assembly includes a first hoisting rod (50) and a second hoisting rod (51). One end of the first hoisting rod (50) is provided with a first connecting plate (53). The first connecting plate (53) is provided with a plurality of first connecting holes (54) in the circumferential direction. The other end of the first hoisting rod (50) and one end of the second hoisting rod (51) are screwed to the same first adjusting ring (52). The threads on the first hoisting rod (50) and the second hoisting rod (51) have opposite directions. The other end of the second hoisting rod (51) is hinged to the screening frame (1).

9. The raw coal screening device for a bucket wheel excavator according to claim 7, characterized in that, The second hoisting assembly includes a third hoisting rod (60) and a fourth hoisting rod (61). One end of the third hoisting rod (60) is provided with a second connecting plate (63). The second connecting plate (63) is provided with a plurality of second connecting holes (64) in the circumferential direction. The other end of the third hoisting rod (60) and one end of the fourth hoisting rod (61) are screwed together with the same second adjusting ring (62). The threads on the third hoisting rod (60) and the fourth hoisting rod (61) have opposite directions. The other end of the fourth hoisting rod (61) is hinged to a sliding sleeve (82), which slides in cooperation with the screening frame (1).

10. The raw coal screening device for a bucket wheel excavator according to claim 9, characterized in that, The screening frame (1) is provided with sliding rods (80) on both the left and right sides, and the sliding sleeve (82) is slidably sleeved on the sliding rods (80); two limiting sleeves (81) are screwed onto the sliding rods (80), and the two limiting sleeves (81) are respectively located on both sides of the length direction of the sliding sleeve (82).

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