Four-row back-mounted bucket elevator

Abstract

The application discloses a four-row back-mounted bucket elevator, which comprises a head transmission shaft and a tail transmission shaft, four chain wheels are arranged on the head transmission shaft, four tail wheels are arranged on the tail transmission shaft, each chain wheel is in transmission connection with a corresponding tail wheel through a chain, and a plurality of buckets are arranged on the chain, and the buckets on two adjacent chains are in one-to-one correspondence. Compared with the prior art, the single bucket with large capacity is split into four independent buckets with moderate capacity, so that the problem of excessively large bucket width is avoided.

Description

Technical Field

[0001] This invention relates to the technical field of bucket elevators, and in particular to the technical field of a four-row back-loading bucket elevator. Background Technology

[0002] A bucket elevator consists of buckets, a drive unit, top and bottom rollers (or sprockets), a belt (or traction chain), a tensioning device, and a casing. The buckets scoop up material from the storage below, and as the conveyor belt or chain lifts it to the top, it flips down after passing over the top wheel, and the bucket elevator pours the material into the receiving trough. Belt-driven bucket elevators typically use rubber belts, mounted on the lower or upper drive rollers and the upper and lower idler rollers. Chain-driven bucket elevators generally have two parallel drive chains, with a pair of drive sprockets at the top or bottom and a pair of idler sprockets at the bottom or top.

[0003] As a primary material transport equipment, traditional bucket elevators typically employ large-capacity buckets to meet high conveying demands. However, this often leads to problems such as bucket deformation and uneven chain stress due to material impact and distribution during operation. Furthermore, it causes inconvenience in production, processing, and transportation. To address this issue, we have optimized and innovated the elevator structure by dividing the large-capacity single bucket into four appropriately sized independent buckets, thus avoiding the problem of excessively wide buckets. Summary of the Invention

[0004] The purpose of this invention is to solve the problems in the prior art by proposing a four-row back-loading bucket elevator, which avoids the problem of excessively wide buckets by dividing a single large-capacity bucket into four appropriately sized independent buckets.

[0005] To achieve the above objectives, the present invention proposes a four-row back-loading bucket elevator, including a head drive shaft and a tail drive shaft. The head drive shaft is provided with four sprockets, and the tail drive shaft is provided with four tail wheels. Each sprocket is connected to the corresponding tail wheel by a chain drive. Each chain is provided with several buckets, and the buckets on two adjacent chains correspond one-to-one.

[0006] Preferably, the head drive shaft passes through the head housing via bearing seat I, and the tail drive shaft is mounted on the tail housing via a tensioning device. The head housing and the tail housing are connected by two intermediate housings. The chain drives the hopper on it to pass through the intermediate housings. Each intermediate housing is equipped with an inspection door II. The head housing is equipped with a support beam. The middle position of the head drive shaft is supported on the support beam via bearing seat II. Two sealing plates are rotatably mounted on the head drive shaft, and the sealing plates are fixedly connected to the corresponding side walls of the head housing.

[0007] Preferably, the head housing includes a lower head housing and a head cover fixed to the upper end of the lower head housing via a flange. The head cover is provided with an inspection door I, and the lower head housing is provided with a discharge port. The discharge port is provided with three discharge baffles that divide its interior into four material distribution outlets. Four chains drive the hoppers on them through the corresponding material distribution outlets.

[0008] Preferably, each of the two corresponding side walls of the lower head housing is provided with a mounting base for mounting the bearing seat I, and a plurality of support arms are provided between the bottom of the mounting base and the lower head housing.

[0009] Preferably, the head drive shaft adopts a multi-step structure with the shaft diameter decreasing from the middle to both ends. The sprocket is fixed to the corresponding step of the head drive shaft by a key and screw. The sprocket includes a sprocket core and an annular sprocket body that is mounted on the sprocket core by a number of bolts.

[0010] Preferably, the tail drive shaft adopts a multi-step structure with the shaft diameter decreasing from the middle to both ends. The tail wheel is fixed to the corresponding step of the tail drive shaft by a key and screws. The tail wheel includes a tail wheel core and several fan-shaped tail wheel rims that are sequentially assembled and attached to the tail wheel core by several bolt pairs.

[0011] Preferably, the tail section housing is provided with a feed inlet, and the feed inlet is provided with three feed baffles that divide the interior into four feed inlets. Four chains drive the hoppers on them through the corresponding feed inlets.

[0012] Preferably, the tensioning device is located between two intermediate housings. The tensioning device includes two sliding mechanisms, a connecting shaft, a counterweight roller, two wheel bodies, and two racks. The sliding mechanism is provided with a connecting shaft, and the counterweight roller is rotatably mounted on the connecting shaft. Both ends of the counterweight roller are provided with wheel bodies, and a toothed groove area is provided on one side of the circumference of the wheel body. The intermediate housing in front is provided with racks that correspond one-to-one with the toothed groove areas and mesh appropriately.

[0013] Preferably, the sliding mechanism includes a frame, a bearing seat III, and a slide rod. The bearing seat III is slidably mounted inside the frame via a linear guide rail. A linear bearing is mounted on the upper end of the frame. A slide rod with its lower end connected to the bearing seat III is mounted inside the linear bearing. The upper end of the slide rod has an external thread section that passes through the connecting shaft. A fixing nut that is threadedly connected to the external thread section and located on the upper and lower sides of the connecting shaft is fitted onto the external thread section.

[0014] Preferably, the intermediate housing at the rear is provided with a limiting block that corresponds to and contacts the circumference of the wheel body, and also includes a positioning plate on the tail housing, with linear bearings sleeved on the slide rod at both ends of the positioning plate.

[0015] The beneficial effects of the present invention are as follows: The present invention has four sprockets on the head drive shaft and four tail wheels on the tail drive shaft. Each sprocket is connected to the corresponding tail wheel by a chain drive. Each chain has several hoppers, and the hoppers on two adjacent chains correspond one-to-one. Compared with the prior art, the present invention avoids the problem of excessively wide hoppers by splitting a single large-capacity hopper into four appropriately sized independent hoppers.

[0016] The features and advantages of the present invention will be described in detail through embodiments and in conjunction with the accompanying drawings. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural schematic diagram of a four-row back-loading bucket elevator according to the present invention; Figure 2 This is a side view of a four-row back-loading bucket elevator according to the present invention; Figure 3 This is a schematic diagram of a structure where the sprocket is mounted on the head drive shaft; Figure 4 This is a three-dimensional structural diagram of the tail wheel mounted on the tail drive shaft; Figure 5 This is a side view of the tail wheel mounted on the tail drive shaft; Figure 6 This is a top view of the tensioning device; Figure 7 This is a three-dimensional schematic diagram of the tensioning device.

[0018] In the diagram: 1-Head drive shaft, 2-Tail drive shaft, 3-Sprocket, 4-Tail wheel, 5-Chain, 6-Hopper, 7-Bearing seat I, 8-Head housing, 9-Tensioning device, 10-Tail housing, 11-Feed inlet, 12-Feed partition, 13-Distribution inlet, 14-Intermediate housing, 15-Inspection door II, 31-Sprocket core, 32-Annular sprocket body, 41-Tail wheel core, 42-Fan-shaped tail wheel rim, 80-Discharge port, 81-Lower head housing, 82-Head Cover, 83-Inspection door I, 84-Support beam, 85-Bearing seat II, 86-Sealing plate, 87-Mounting seat, 88-Support arm, 91-Sliding mechanism, 92-Connecting shaft, 93-Counterweight roller, 94-Wheel body, 95-Rack, 96-Gear groove area, 97-Limit block, 98-Positioning plate, 911-Frame seat, 912-Bearing seat III, 913-Slide rod, 914-Linear guide rail, 915-Linear bearing, 916-External thread section, 917-Fixing nut. Detailed Implementation

[0019] See Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7 The present invention discloses a four-row back-loading bucket elevator, comprising a head drive shaft 1 and a tail drive shaft 2. The head drive shaft 1 is provided with four sprockets 3, and the tail drive shaft 2 is provided with four tail wheels 4. Each sprocket 3 is connected to the corresponding tail wheel 4 by a chain 5. Each chain 5 is provided with a plurality of buckets 6, and the buckets 6 on two adjacent chains 5 correspond one-to-one.

[0020] The head drive shaft 1 passes through the head housing 8 via the bearing seat I7, and the tail drive shaft 2 is mounted on the tail housing 10 via the tensioning device 9. The head housing 8 and the tail housing 10 are connected by two intermediate housings 14. The chain 5 drives the hopper 6 on it to pass through the intermediate housings 14. Each intermediate housing 14 is equipped with an inspection door II15. The head housing 8 is equipped with a support beam 84. The middle position of the head drive shaft 1 is supported on the support beam 84 via the bearing seat II85. Two sealing plates 86 are rotatably mounted on the head drive shaft 1, and the sealing plates 86 are fixedly connected to the corresponding side walls of the head housing 8.

[0021] The head housing 8 includes a lower head housing 81 and a head cover 82 fixed to the upper end of the lower head housing 81 by a flange. The head cover 82 is provided with an inspection door 183. The lower head housing 81 is provided with a discharge port 80. The discharge port 80 is provided with three discharge baffles that divide its interior into four material distribution outlets. Four chains 5 drive the hoppers 6 on them through the corresponding material distribution outlets.

[0022] The lower housing 81 of the head is provided with mounting bases 87 for mounting bearing seats I7 on two corresponding side walls, and a number of support arms 88 are provided between the bottom of the mounting base 87 and the lower housing 81 of the head.

[0023] The head drive shaft 1 adopts a multi-step structure with the shaft diameter decreasing from the middle to both ends. The sprocket 3 is fixed on the corresponding step of the head drive shaft 1 by a key and screw. The sprocket 3 includes a sprocket core 31 and an annular sprocket body 32 that is mounted on the sprocket core 31 by a number of bolts.

[0024] The tail drive shaft 2 adopts a multi-step structure with the shaft diameter decreasing from the middle to both ends. The tail wheel 4 is fixed on the corresponding step of the tail drive shaft 2 by a key and screw. The tail wheel 4 includes a tail wheel core 41 and several fan-shaped tail wheel rims 42 that are sequentially assembled and connected to the tail wheel core 41 by several bolts.

[0025] The tail housing 10 is provided with a feed inlet 11, and the feed inlet 11 is provided with three feed baffles 12, which divide the interior into four feed inlets 13. The four chains 5 drive the hoppers 6 on them through the corresponding feed inlets 13.

[0026] The tensioning device 9 is located between the two intermediate housings 14. The tensioning device 9 includes two sliding mechanisms 91, a connecting shaft 92, a counterweight roller 93, two wheel bodies 94, and two racks 95. The sliding mechanism 91 is provided with a connecting shaft 92, and the counterweight roller 93 is rotatably mounted on the connecting shaft 92. Both ends of the counterweight roller 93 are provided with wheel bodies 94. A toothed groove area 96 is provided on one side of the circumferential surface of the wheel body 94. The intermediate housing 14 in front is provided with racks 95 that correspond one-to-one with the toothed groove area 96 and mesh properly.

[0027] The sliding mechanism 91 includes a frame 911, a bearing seat III 912, and a slide rod 913. The bearing seat III 912 is slidably mounted inside the frame 911 via a linear guide rail 914. A linear bearing 915 is provided at the upper end of the frame 911. A slide rod 913, whose lower end is connected to the bearing seat III 912, is provided inside the linear bearing 915. An external thread section 916, which passes through the connecting shaft 92, is provided at the upper end of the slide rod 913. A fixing nut 917, which is threadedly connected to the external thread section 916 and is located on the upper and lower sides of the connecting shaft 92, is fitted on the external thread section 916.

[0028] The intermediate housing 14 at the rear is provided with a limiting block 97 that corresponds to and contacts the circumferential surface of the wheel 94. It also includes a positioning plate 98 on the tail housing 10. The two ends of the positioning plate 98 are also provided with linear bearings 915 sleeved on the slide rod 913.

[0029] The working process of this invention: In the operation of this invention, a four-row back-loading bucket elevator first drives the head drive shaft 1 through a power unit. The four sprockets 3 on the head drive shaft 1 rotate accordingly, driving the meshing chain 5. The tail drive shaft 2 also moves with the chain drive. Then, the external feeding mechanism transports the material to the feed inlet 11 at the tail of the elevator. The material is divided by the feed baffle 12 and flows into the four rows of buckets. The buckets 6 then transport the material from the tail of the elevator to the head through the chain drive. After the buckets 6 reach the head, they are flipped by the chain drive, and the material is poured out. It then flows out from the discharge port 80 of the head casing 8 and enters the external feeding device. The buckets of the four-row back-loading bucket elevator are independent of each other and can be transported by the material distribution device at the inlet and outlet.

[0030] When the tensioning device 9 is working, the connecting shaft 92 drives the slide bar 913 to move downward through the weight of the counterweight roller 93. The slide bar 913 drives the tail drive shaft 2 to move downward through the bearing seat III 912. The tail drive shaft 2 pulls the corresponding chain 5 through the tail wheel 4 to tension. When the counterweight roller 93 moves downward, due to the meshing of the tooth groove area 96 and the rack 95, the wheel bodies 94 at both ends will rotate synchronously along the rack 95 and drive the counterweight roller 93 to rotate. This makes the two ends of the counterweight roller 93 descend synchronously, avoiding the disadvantages caused by the tilting of the connecting shaft 92 causing the tail drive shaft 2 to tilt.

[0031] The hopper is mounted on its back and connected to four conveyor chains. The transmission uses a structure with four sets of sprockets on the same drive shaft to ensure the synchronization of the transmission and improve the balance during operation. The four-row hopper structure can also meet the conveying requirements of different materials through independent feeding and discharging systems, which improves the overall conveying capacity while taking into account structural reliability and process flexibility.

[0032] During the operation of the hoist, the head drive shaft 1 is subjected to excessive force in the middle. Therefore, a support beam 84 is provided inside the head housing 8. The middle position of the head drive shaft 1 is supported on the support beam 84 by a bearing seat II 85 to reduce the support span, reduce bending stress, and protect the head shaft from bending deformation or damage.

[0033] The above embodiments are illustrative of the present invention and are not intended to limit the present invention. Any simple modifications to the present invention are within the scope of protection of the present invention.

Claims

1. A four-row back-loading bucket elevator, characterized in that: It includes a head drive shaft (1) and a tail drive shaft (2). The head drive shaft (1) is provided with four sprockets (3) and the tail drive shaft (2) is provided with four tail wheels (4). Each sprocket (3) is connected to the corresponding tail wheel (4) by a chain (5). Each chain (5) is provided with several hoppers (6), and the hoppers (6) on two adjacent chains (5) correspond one-to-one.

2. The four-row back-loading bucket elevator as described in claim 1, characterized in that: The head drive shaft (1) passes through the bearing seat I (7) on the head housing (8), and the tail drive shaft (2) is mounted on the tail housing (10) through the tensioning device (9). The head housing (8) and the tail housing (10) are connected by two intermediate housings (14). The chain (5) drives the hopper (6) on it to pass through the intermediate housing (14). Each intermediate housing (14) is provided with an inspection door II (15). The head housing (8) is provided with a support beam (84). The middle position of the head drive shaft (1) is supported on the support beam (84) through the bearing seat II (85). The head drive shaft (1) is provided with two sealing plates (86) for sealing rotation. The sealing plates (86) are fixedly connected to the corresponding side walls of the head housing (8).

3. A four-row back-loading bucket elevator as described in claim 2, characterized in that: The head housing (8) includes a lower head housing (81) and a head cover (82) fixed to the upper end of the lower head housing (81) by a flange connection. The head cover (82) is provided with an inspection door I (83). The lower head housing (81) is provided with a discharge port (80). The discharge port (80) is provided with three discharge baffles to divide its interior into four material distribution outlets. Four chains (5) drive the hoppers (6) on them to pass through the corresponding material distribution outlets.

4. A four-row back-loading bucket elevator as described in claim 2, characterized in that: The lower housing (81) of the head is provided with mounting bases (87) for mounting bearing seats I (7) on two corresponding side walls, and a number of support arms (88) are provided between the bottom of the mounting base (87) and the lower housing (81).

5. A four-row back-loading bucket elevator as described in claim 1, characterized in that: The head drive shaft (1) adopts a multi-step structure with the shaft diameter decreasing from the middle to both ends. The sprocket (3) is fixed on the corresponding step of the head drive shaft (1) by a key and screw. The sprocket (3) includes a sprocket core (31) and an annular sprocket body (32) that is mounted on the sprocket core (31) by a number of bolts.

6. A four-row back-loading bucket elevator as described in claim 1, characterized in that: The tail drive shaft (2) adopts a multi-step structure with the shaft diameter decreasing from the middle to both ends. The tail wheel (4) is fixed on the corresponding step of the tail drive shaft (2) by a key and screw. The tail wheel (4) includes a tail wheel core (41) and several fan-shaped tail wheel rims (42) that are sequentially assembled and set on the tail wheel core (41) by several bolts.

7. A four-row back-loading bucket elevator as described in claim 2, characterized in that: The tail housing (10) is provided with a feed inlet (11), and the feed inlet (11) is provided with three feed baffles (12) to divide it into four feed inlets (13). The four chains (5) drive the hoppers (6) on them to pass through the corresponding feed inlets (13).

8. A four-row back-loading bucket elevator as described in claim 2, characterized in that: The tensioning device (9) is located between two intermediate housings (14). The tensioning device (9) includes two sliding mechanisms (91), a connecting shaft (92), a counterweight roller (93), two wheel bodies (94), and two racks (95). The sliding mechanism (91) is provided with a connecting shaft (92). The counterweight roller (93) is rotatably provided on the connecting shaft (92). Both ends of the counterweight roller (93) are provided with wheel bodies (94). A toothed groove area (96) is provided on one side of the wheel body (94). The intermediate housing (14) in front is provided with racks (95) that correspond one-to-one with the toothed groove area (96) and mesh properly.

9. A four-row back-loading bucket elevator as described in claim 8, characterized in that: The sliding mechanism (91) includes a frame (911), a bearing seat III (912), and a slide rod (913). The bearing seat III (912) is slidably disposed inside the frame (911) via a linear guide rail (914). A linear bearing (915) is disposed at the upper end of the frame (911). A slide rod (913) is disposed inside the linear bearing (915) and its lower end is connected to the bearing seat III (912). An external thread section (916) passing through the connecting shaft (92) is disposed at the upper end of the slide rod (913). A fixing nut (917) is fitted on the external thread section (916) and threadedly connected to it and located on the upper and lower sides of the connecting shaft (92).

10. A four-row back-loading bucket elevator as described in any one of claims 8 to 9, characterized in that: The intermediate housing (14) at the rear is provided with a limiting block (97) that corresponds to and contacts the circumferential surface of the wheel (94), and also includes a positioning plate (98) provided on the tail housing (10). The two ends of the positioning plate (98) are also provided with linear bearings (915) sleeved on the slide rod (913).

Images