Direct connect screen hopper power unit

Abstract

The utility model discloses a direct connection type screening hopper power head, including direct connection type screening hopper power head, including frame backplate, connecting stud, screen hopper tail plate, axle end cover plate, threaded connection spare, cover plate connecting stud, screen hopper, tail box connecting plate, slewing reducer connecting screw, screen hopper tail plate connecting screw, slewing disc, slewing disc connecting screw, frame, still have slewing reducer, hydraulic motor, slewing disc, main shaft. Adopt slewing reducer to replace double -row same -diameter ball type slewing support spare, set up main shaft connection screen hopper and frame, and the dispersed load. Place the transmission part and the support part as a whole in the tail box, insulate dry high dust working environment, reduce the maintenance cost.

Description

Technical Field

[0001] This utility model belongs to the technical field of engineering machinery attachments, specifically relating to a direct-drive screening bucket power head. Background Technology

[0002] Screening buckets, as excavator attachments, are primarily used for screening initially crushed and excavated engineering materials such as rock, soil, sand, and gravel. The working conditions are harsh, with significant dust and oil pollution. Currently, a screening bucket consists of a connecting frame, a frame, a screening bucket, a direct-drive screening bucket power head, a towing wheel system, and a tail box. The connecting frame connects the screening bucket to the excavator arm; the frame acts as the screening bucket's framework, supporting the bucket and connecting to the connecting frame, providing structural strength; the screening bucket performs the screening operation; the bucket drive support provides support and power to drive the bucket's rotation; the towing wheel system provides front-end support for the bucket, assisting in its rotation while ensuring concentricity; and the tail box primarily isolates the bucket drive support from dust.

[0003] Regarding the drive support of the screen bucket, current small-tonnage screen buckets use a direct-drive structure to the traveling motor. This structure causes the load to be transmitted to the motor bearings, which cannot meet the working requirements under heavy loads. Existing large-tonnage screen buckets have the following problems: The screen bucket is connected to the frame via a double-row, same-diameter spherical rotary support. This support structure is directly exposed to a dry, high-dust environment, and dust entering the support reduces its service life. The motor is fixed by bolts inserted into the tail box connecting plate. These bolts are subjected to repeated impact loads and shear forces, making them prone to breakage. The motor, double-row, same-diameter spherical rotary support, and screen bucket require high coaxiality, making installation complex and difficult, requiring multiple attempts. The tail box is a closed structure, making it inconvenient to connect cables and conduits to the internal structure. Utility Model Content

[0004] The purpose of this utility model is to provide a direct-drive screening bucket power head, which solves the problems in the existing technology where the motor is fixed by bolts inserted into the tail box connecting plate. During operation, the bolts are subjected to repeated impact loads and shear forces, which easily leads to breakage and poor reliability. The motor, double-row equal-diameter ball slewing support and the screening bucket need to have a high degree of coaxiality.

[0005] To solve the above-mentioned technical problems, this utility model provides a direct-drive screening bucket power head, characterized in that it includes a hydraulic motor, which is fixedly connected to the input shaft of a rotary reducer. The rotary reducer is fixedly connected to the tail box connecting plate by connecting screws on the tail plate of the screening bucket. The tail box connecting plate is fixedly connected to the back plate of the frame by connecting studs on the side near the frame. The back plate of the frame is fixedly connected to the frame. The rotating reducer's moving ring is fixedly connected to the rotary table via rotary reducer connecting screws. The rotary table is fixedly connected to one end of the main shaft via rotary table connecting screws. The main shaft passes sequentially from the rotary table to the screen bucket, through the rotary reducer's central circular hole, the frame back plate, the tail box connecting plate, and the screen bucket tail plate. The other end of the main shaft is fixedly connected to the shaft end cover plate via threaded connectors. The shaft end cover plate is fixedly connected to the screen bucket tail plate via cover plate connecting studs. The screen bucket tail plate is fixedly connected to the screen bucket.

[0006] The features of this utility model also include: The shaft end cover is fixedly provided with a stop, and the threaded connector passes through the stop to fix the shaft end cover and the main shaft.

[0007] The rotary table is connected to the spindle via a key.

[0008] The shaft end cover plate is also fixedly connected to the screen bucket tail plate by a pin.

[0009] The tail box connecting plate connects to the tail box, which is a hollow metal shell that covers the top of the rotary reducer and hydraulic motor.

[0010] The tail box is divided into two parts. One part is a trapezoidal box. The longest surface of the trapezoidal box is close to the tail box connecting plate and has a circular hole. Another part of the circular gasket is fixedly connected to the outside of the circular hole. The circular gasket is connected to the tail box connecting plate.

[0011] The top surface of the rectangular box in the tailgate has pre-drilled holes for pipes.

[0012] Rotary reducer 1 is a hydraulic rotary reducer.

[0013] The beneficial effects of this utility model are: (1) The transmission part and the support part are placed as one unit in the tail box, which isolates the dry and dusty working environment and reduces maintenance costs.

[0014] (2) A rotary reducer is used instead of a double-row ball-type rotary support. A main shaft is set up to connect the screen bucket and the frame. The hydraulic motor is directly connected to the rotary reducer to strengthen the load-bearing capacity and enhance the structural reliability.

[0015] (3) A stop is provided on the shaft end cover to ensure the concentricity of the main shaft and the shaft end cover when connected, and to reduce the wear of parts caused by vibration.

[0016] (4) The tail box is equipped with a pipe pre-drilled hole to facilitate hydraulic oil pipe connection and improve efficiency. Attached Figure Description Figure 1 This is a three-dimensional axonometric view of the direct-drive screening bucket power head of this utility model; Figure 2 The rear view of the direct-connection screening bucket power head of this utility model is a three-dimensional isometric view. Figure 3 This is a cross-sectional view of the direct-connection screening bucket power head of this utility model; Figure 4 This is a view showing the installation and assembly of the direct-connection screening bucket power head of this utility model; Figure 5 This is an enlarged view of the new direct-connection screening bucket power head of this utility model; Figure 6 This is a partial cross-sectional view of the novel direct-connection screening bucket power head of this utility model; Figure 7 This is a front view of a conventional rotary reducer; Figure 8 This is a cross-sectional view of a conventional rotary reducer.

[0017] In the diagram, 1. Rotary reducer, 2. Hydraulic motor, 3. Frame back plate, 4. Connecting stud, 5. Screen bucket tail plate, 6. Pin, 7. Shaft end cover plate, 8. Threaded connector, 9. Cover plate connecting stud, 10. Screen bucket, 11. Tail box connecting plate, 12. Reducer connecting screw, 13. Screen bucket tail plate connecting screw, 14. Stop, 15. Rotary disc, 16. Key, 17. Rotary disc connecting screw, 18. Main shaft, 19. Frame, 20. Tail box. Detailed Implementation

[0018] The following detailed description is provided in conjunction with specific implementation methods.

[0019] This utility model provides a direct-drive power head for a screening bucket, such as... Figure 7 , Figure 8 As shown, it includes a hydraulic motor 2, such as Figure 1 , Figure 2 As shown, the hydraulic motor 2 is fixedly connected to the input shaft of the rotary reducer 1, as follows: Figure 5 , Figure 6 As shown, the rotary reducer 1 is fixedly connected to the tail box connecting plate 11 by the screen bucket tail plate connecting screw 13. The tail box connecting plate 11 is fixedly connected to the frame back plate 3 by the connecting stud 4 on the side near the frame. The frame back plate 3 is fixedly connected to the frame 19. like Figure 3 , Figure 4As shown, the rotating coil of the rotary reducer 1 is fixedly connected to the rotary disk 15 via the rotary reducer connecting screw 12. The end face of the rotary disk 15 is fixedly connected to one end of the main shaft 18 via the rotary disk connecting screw 17, so that the main shaft 18 is axially positioned. The rotary disk 15 is circumferentially connected to the main shaft 18 via the key 16. The main shaft 18 passes through the central circular hole of the rotary reducer 1, the frame back plate 3, the tail box connecting plate 11, and the tail plate of the screen bucket 10 in sequence from the rotary disk 15 to the screen bucket 10. The other end of the main shaft 18 is fixedly connected to the shaft end cover plate 7 via the threaded connector 8. At the same time, the shaft end cover plate 7 is fixedly connected to the tail plate of the screen bucket 5 via the cover plate connecting stud 9. The tail plate of the screen bucket 5 is fixedly connected to the screen bucket 10.

[0020] When working, the hydraulic motor 2 is started to generate power, which is transmitted to the rotary reducer 1, then to the rotary table 15, and then from the rotary table 15 to the main shaft 18 via the key 16. The main shaft 18 then transmits the power to the shaft end cover plate 7, and the shaft end cover plate 7 transmits the power to the screen bucket tail plate 5. The screen bucket tail plate 5 connects to the screen bucket 10, enabling the screen bucket 10 to perform its operation.

[0021] Example 1 The direct-drive screening bucket power head includes a hydraulic motor 2, which is fixedly connected to the input shaft of the rotary reducer 1. The rotary reducer 1 is fixedly connected to the tail box connecting plate 11 by the tail plate connecting screw 13. The tail box connecting plate 11 is fixedly connected to the frame back plate 3 by the connecting stud 4 on the side near the frame. The frame back plate 3 is fixedly connected to the frame 19. The rotating reducer 1 has its moving coil fixedly connected to the rotary table 15 via rotary reducer connecting screws 12. The end face of the rotary table 15 is fixedly connected to one end of the main shaft 18 via rotary table connecting screws 17, thus axially positioning the main shaft 18. The rotary table 15 is circumferentially connected to the main shaft 18 via key 16. The main shaft 18 passes sequentially from the rotary table 15 to the screen bucket 10, through the central circular hole of the rotary reducer 1, the frame back plate 3, the tail box connecting plate 11, and the screen bucket tail plate 5. The other end of the main shaft 18 is fixedly connected to the shaft end cover plate 7 via threaded connector 8. At the same time, the shaft end cover plate 7 is fixedly connected to the screen bucket tail plate 5 via cover plate connecting studs 9. The screen bucket tail plate 5 is fixedly connected to the screen bucket 10.

[0022] The rotary table 15 is connected to the spindle 18 via key 16.

[0023] The shaft end cover plate 7 is also fixedly connected to the screen bucket tail plate 5 by pin 6.

[0024] Example 2 The direct-drive screening bucket power head includes a hydraulic motor 2, which is fixedly connected to the input shaft of the rotary reducer 1. The rotary reducer 1 is fixedly connected to the tail box connecting plate 11 by the tail plate connecting screw 13. The tail box connecting plate 11 is fixedly connected to the frame back plate 3 by the connecting stud 4 on the side near the frame. The frame back plate 3 is fixedly connected to the frame 19. The rotating reducer 1 has its moving coil fixedly connected to the rotary table 15 via rotary reducer connecting screws 12. The end face of the rotary table 15 is fixedly connected to one end of the main shaft 18 via rotary table connecting screws 17, thus axially positioning the main shaft 18. The rotary table 15 is circumferentially connected to the main shaft 18 via key 16. The main shaft 18 passes sequentially from the rotary table 15 to the screen bucket 10, through the central circular hole of the rotary reducer 1, the frame back plate 3, the tail box connecting plate 11, and the screen bucket tail plate 5. The other end of the main shaft 18 is fixedly connected to the shaft end cover plate 7 via threaded connector 8. At the same time, the shaft end cover plate 7 is fixedly connected to the screen bucket tail plate 5 via cover plate connecting studs 9. The screen bucket tail plate 5 is fixedly connected to the screen bucket 10.

[0025] The rotary table 15 is connected to the spindle 18 via key 16.

[0026] The shaft end cover plate 7 is also fixedly connected to the screen bucket tail plate 5 by pin 6.

[0027] The shaft end cover 7 is fixedly provided with a stop 14, and the threaded connector 8 passes through the stop 14 to fix the shaft end cover 7 and the main shaft 18.

[0028] Example 3 The direct-drive screening bucket power head includes a hydraulic motor 2, which is fixedly connected to the input shaft of the rotary reducer 1. The rotary reducer 1 is fixedly connected to the tail box connecting plate 11 by the tail plate connecting screw 13. The tail box connecting plate 11 is fixedly connected to the frame back plate 3 by the connecting stud 4 on the side near the frame. The frame back plate 3 is fixedly connected to the frame 19. The rotating reducer 1 has its moving coil fixedly connected to the rotary table 15 via rotary reducer connecting screws 12. The end face of the rotary table 15 is fixedly connected to one end of the main shaft 18 via rotary table connecting screws 17, thus axially positioning the main shaft 18. The rotary table 15 is circumferentially connected to the main shaft 18 via key 16. The main shaft 18 passes sequentially from the rotary table 15 to the screen bucket 10, through the central circular hole of the rotary reducer 1, the frame back plate 3, the tail box connecting plate 11, and the screen bucket tail plate 5. The other end of the main shaft 18 is fixedly connected to the shaft end cover plate 7 via threaded connector 8. At the same time, the shaft end cover plate 7 is fixedly connected to the screen bucket tail plate 5 via cover plate connecting studs 9. The screen bucket tail plate 5 is fixedly connected to the screen bucket 10.

[0029] The rotary table 15 is connected to the spindle 18 via key 16.

[0030] The shaft end cover plate 7 is also fixedly connected to the screen bucket tail plate 5 by pin 6.

[0031] The shaft end cover 7 is fixedly provided with a stop 14, and the threaded connector 8 passes through the stop 14 to fix the shaft end cover 7 and the main shaft 18.

[0032] Rotary reducer 1 is a hydraulic rotary reducer.

[0033] Example 4 The direct-drive screening bucket power head includes a hydraulic motor 2, which is fixedly connected to the input shaft of the rotary reducer 1. The rotary reducer 1 is fixedly connected to the tail box connecting plate 11 by the tail plate connecting screw 13. The tail box connecting plate 11 is fixedly connected to the frame back plate 3 by the connecting stud 4 on the side near the frame. The frame back plate 3 is fixedly connected to the frame 19. The rotating reducer 1 has its moving coil fixedly connected to the rotary table 15 via rotary reducer connecting screws 12. The end face of the rotary table 15 is fixedly connected to one end of the main shaft 18 via rotary table connecting screws 17, thus axially positioning the main shaft 18. The rotary table 15 is circumferentially connected to the main shaft 18 via key 16. The main shaft 18 passes sequentially from the rotary table 15 to the screen bucket 10, through the central circular hole of the rotary reducer 1, the frame back plate 3, the tail box connecting plate 11, and the screen bucket tail plate 5. The other end of the main shaft 18 is fixedly connected to the shaft end cover plate 7 via threaded connector 8. At the same time, the shaft end cover plate 7 is fixedly connected to the screen bucket tail plate 5 via cover plate connecting studs 9. The screen bucket tail plate 5 is fixedly connected to the screen bucket 10.

[0034] The rotary table 15 is connected to the spindle 18 via key 16.

[0035] The shaft end cover plate 7 is also fixedly connected to the screen bucket tail plate 5 by pin 6.

[0036] The shaft end cover 7 is fixedly provided with a stop 14, and the threaded connector 8 passes through the stop 14 to fix the shaft end cover 7 and the main shaft 18.

[0037] Rotary reducer 1 is a hydraulic rotary reducer.

[0038] The tail box connecting plate 11 connects to the tail box 20, which is a hollow metal shell that covers the top of the rotary reducer 1 and the hydraulic motor 2.

[0039] Example 5 The direct-drive screening bucket power head includes a hydraulic motor 2, which is fixedly connected to the input shaft of the rotary reducer 1. The rotary reducer 1 is fixedly connected to the tail box connecting plate 11 by the tail plate connecting screw 13. The tail box connecting plate 11 is fixedly connected to the frame back plate 3 by the connecting stud 4 on the side near the frame. The frame back plate 3 is fixedly connected to the frame 19. The rotating reducer 1 has its moving coil fixedly connected to the rotary table 15 via rotary reducer connecting screws 12. The end face of the rotary table 15 is fixedly connected to one end of the main shaft 18 via rotary table connecting screws 17, thus axially positioning the main shaft 18. The rotary table 15 is circumferentially connected to the main shaft 18 via key 16. The main shaft 18 passes sequentially from the rotary table 15 to the screen bucket 10, through the central circular hole of the rotary reducer 1, the frame back plate 3, the tail box connecting plate 11, and the screen bucket tail plate 5. The other end of the main shaft 18 is fixedly connected to the shaft end cover plate 7 via threaded connector 8. At the same time, the shaft end cover plate 7 is fixedly connected to the screen bucket tail plate 5 via cover plate connecting studs 9. The screen bucket tail plate 5 is fixedly connected to the screen bucket 10.

[0040] The rotary table 15 is connected to the spindle 18 via key 16.

[0041] The shaft end cover plate 7 is also fixedly connected to the screen bucket tail plate 5 by pin 6.

[0042] The shaft end cover 7 is fixedly provided with a stop 14, and the threaded connector 8 passes through the stop 14 to fix the shaft end cover 7 and the main shaft 18.

[0043] Rotary reducer 1 is a hydraulic rotary reducer.

[0044] The tail box connecting plate 11 connects to the tail box 20, which is a hollow metal shell that covers the top of the rotary reducer 1 and the hydraulic motor 2.

[0045] The tail box 20 is divided into two parts. One part is a trapezoidal shell. The longest surface of the trapezoidal shell is close to the tail box connecting plate 11 and has a circular hole. The circular hole is connected to another part of the circular gasket, which is connected to the tail box connecting plate 11.

[0046] Example 6 The input shaft of speed reducer 1, the fixed ring of rotary speed reducer 1 is fixedly connected to tail box connecting plate 11 by screen bucket tail plate connecting screw 13, the tail box connecting plate 11 is fixedly connected to frame back plate 3 by connecting stud 4 on the side near the frame, and frame back plate 3 is fixedly connected to frame 19. The rotating reducer 1 has its moving coil fixedly connected to the rotary table 15 via rotary reducer connecting screws 12. The end face of the rotary table 15 is fixedly connected to one end of the main shaft 18 via rotary table connecting screws 17, thus axially positioning the main shaft 18. The rotary table 15 is circumferentially connected to the main shaft 18 via key 16. The main shaft 18 passes sequentially from the rotary table 15 to the screen bucket 10, through the central circular hole of the rotary reducer 1, the frame back plate 3, the tail box connecting plate 11, and the screen bucket tail plate 5. The other end of the main shaft 18 is fixedly connected to the shaft end cover plate 7 via threaded connector 8. At the same time, the shaft end cover plate 7 is fixedly connected to the screen bucket tail plate 5 via cover plate connecting studs 9. The screen bucket tail plate 5 is fixedly connected to the screen bucket 10.

[0047] The rotary table 15 is connected to the spindle 18 via key 16.

[0048] The shaft end cover plate 7 is also fixedly connected to the screen bucket tail plate 5 by pin 6.

[0049] The shaft end cover 7 is fixedly provided with a stop 14, and the threaded connector 8 passes through the stop 14 to fix the shaft end cover 7 and the main shaft 18.

[0050] Rotary reducer 1 is a hydraulic rotary reducer.

[0051] The tail box connecting plate 11 connects to the tail box 20, which is a hollow metal shell that covers the top of the rotary reducer 1 and the hydraulic motor 2.

[0052] The tail box 20 is divided into two parts. One part is a trapezoidal shell. The longest surface of the trapezoidal shell is close to the tail box connecting plate 11 and has a circular hole. The circular hole is connected to another part of the circular gasket, which is connected to the tail box connecting plate 11.

[0053] The top surface of the rectangular box of the tail box 20 has a reserved hole for pipe connection.

Claims

1. A direct-drive screening bucket power head, characterized in that... Includes a hydraulic motor (2), which is fixedly connected to the input shaft of the rotary reducer (1). The rotary reducer (1) is fixedly connected to the tail box connecting plate (11) by the tail plate connecting screw (13). The tail box connecting plate (11) is fixedly connected to the frame back plate (3) by the connecting stud (4) on the side near the frame. The frame back plate (3) is fixedly connected to the frame (19). The rotating reducer (1) is fixedly connected to the rotary table (15) by the rotary reducer connecting screw (12). The rotary table (15) is fixedly connected to one end of the main shaft (18) axially by the rotary table connecting screw (17). The rotary table (15) is connected to the main shaft (18) circumferentially by the key (16). The main shaft (18) passes through the center hole of the rotary reducer (1), the frame back plate (3), the tail box connecting plate (11), and the tail plate of the sieve (10) in sequence from the rotary table (15) to the sieve bucket (10). The other end of the main shaft (18) is fixedly connected to the shaft end cover plate (7) by the threaded connector (8). At the same time, the shaft end cover plate (7) is fixedly connected to the sieve bucket tail plate (5) by the cover plate connecting stud (9). The sieve bucket tail plate (5) is fixedly connected to the sieve bucket (10).

2. The direct-drive screening bucket power head according to claim 1, characterized in that... The shaft end cover (7) is fixedly provided with a stop (14), and the threaded connector (8) passes through the stop (14) to fix the shaft end cover (7) and the main shaft (18).

3. The direct-drive screening bucket power head according to claim 1, characterized in that... The rotary table (15) is connected to the spindle (18) via a key (16).

4. The direct-drive screening bucket power head according to claim 1, characterized in that... The shaft end cover plate (7) is also fixedly connected to the screen bucket tail plate (5) by a pin (6).

5. The direct-drive screening bucket power head according to claim 1, characterized in that... The tail box connecting plate (11) connects to the tail box (20), which is a hollow metal shell covering the top of the rotary reducer (1) and the hydraulic motor (2).

6. The direct-drive screening bucket power head according to claim 5, characterized in that... The tail box (20) is divided into two parts. One part is a trapezoidal shell. The longest surface of the trapezoidal shell is close to the tail box connecting plate (11) and has a circular hole. Another part of the circular gasket is fixedly connected to the outside of the circular hole. The circular gasket is connected to the tail box connecting plate (11).

7. The direct-drive screening bucket power head according to claim 6, characterized in that... The top surface of the rectangular shell of the tail box (20) has a reserved hole for a pipe.

8. The direct-drive screening bucket power head according to any one of claims 1 to 7, characterized in that... The rotary reducer (1) is a hydraulic rotary reducer.

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