A small hydropower station trash rack cleaning device
By designing a cleaning device consisting of a gantry frame, electrical assembly, and drum assembly, and using a wire rope and roller system to drive the drum rotation, the problem of cleaning trash racks in small hydropower stations has been solved, achieving automated, time-saving, and labor-saving cleaning results.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- YELLOW RIVER PEARL WATER CONSERVANCY HYDROPOWER CONSTR C
- Filing Date
- 2023-10-24
- Publication Date
- 2026-05-29
AI Technical Summary
The inconsistent design of trash racks in small hydropower stations and the lack of standardized trash removal devices mean that trash removal relies on manual operation, which is time-consuming and labor-intensive. Furthermore, it is difficult to remove debris at high flow rates, thus affecting power generation efficiency.
Design a cleaning device that includes a gantry frame, an electrical assembly, and a drum assembly. The drum is driven to rotate by a steel wire rope and roller system, and unidirectional rotation is achieved through a ratchet mechanism to automatically clean debris from the trash rack.
It has achieved automated, time-saving, and labor-saving cleaning of trash racks, reduced labor intensity, and can clean efficiently without stopping the machine or reducing the load, thus improving cleaning efficiency and socio-economic benefits.
Smart Images
Figure CN117328417B_ABST
Abstract
Description
Technical Field
[0001] This invention relates to a cleaning drum device, specifically a cleaning device for a small-scale hydropower station trash rack. Background Technology
[0002] Currently, many small hydropower stations have trash racks with varying widths and heights, lacking standardized cleaning devices. Cleaning is typically done manually using a rake, resulting in significant manpower consumption during station operation with poor cleaning effectiveness. Furthermore, when debris is abundant, the increased flow velocity of water discharged from the generators causes debris to adhere to the trash racks, making manual removal impossible. Cleaning can only be carried out after the generators are reduced in load or shut down, which is time-consuming and labor-intensive. Therefore, there is a need to develop a new, simple, convenient, and fast trash rack cleaning device to solve the cleaning problems of trash racks in these small hydropower stations. Summary of the Invention
[0003] In view of the above situation and to overcome the defects of the prior art, the purpose of this invention is to provide a small-scale trash rack cleaning device for hydropower stations, which can effectively solve the problem of trash rack cleaning.
[0004] To achieve the above objectives, the technical solution provided by this invention is a small-scale hydropower station trash rack cleaning device, comprising a gantry frame, an electrical assembly, and a drum assembly. The gantry frame is equipped with two pulley blocks. A wire rope passes around one end of the pulley blocks and is connected to the drum support of the drum assembly, while the other end is connected to a wire rope wheel. The wire rope wheel is connected to a roller assembly, and the transmission end of the roller assembly is connected to the electrical assembly to drive the wire rope wheel to rotate. The drum includes a drum support, a drum, and a ratchet. The drum has evenly distributed pawls along its circumference. The drum is connected to both sides of the drum support via bearing seats. Both ends of the drum are equipped with ratchets, which cooperate with the pawls mounted on the drum support to achieve unidirectional rotation.
[0005] This invention has a simple structure, is easy to operate, and has low manufacturing cost. It effectively solves the problem of cleaning trash racks in small hydropower stations, is easy to produce and promote, and has good social and economic benefits. Attached Figure Description
[0006] Figure 1 This is the front view of the present invention.
[0007] Figure 2 This is a side view of the present invention.
[0008] Figure 3 This is a top view of the present invention.
[0009] Figure 4 This is the present invention. Figure 3 Diagram of direction A in the middle.
[0010] Figure 5 This is the present invention. Figure 3Diagram of the BB direction. Detailed Implementation
[0011] The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings and specific circumstances.
[0012] As shown in the accompanying drawings, a small-scale hydropower station trash rack cleaning device includes a gantry frame, an electrical assembly, and a drum assembly. The gantry frame 2 is equipped with two pulley blocks 1. A wire rope 4 passes around the pulley blocks 1 and is connected at one end to the drum support 3 of the drum assembly, and at the other end to a wire rope wheel 401. The wire rope wheel 401 is connected to a roller assembly, and the transmission end of the roller assembly is connected to the electrical assembly to drive the wire rope wheel 401 to rotate. The drum includes a drum support 3, a drum 5, and a ratchet 11. The drum 5 has evenly distributed pawls 501 along its circumference. The drum 5 is connected to both sides of the drum support 3 via bearing seats. Both ends of the drum 5 are equipped with ratchet 11, and the ratchet 11 cooperates with the pawls mounted on the drum support 3 to achieve unidirectional rotation.
[0013] To ensure better implementation results, the roller assembly includes a roller shaft 6, a bearing seat 7, and a support 701. The wire rope wheel 401 is mounted on the roller shaft 6, and both ends of the roller shaft 6 are respectively mounted in the bearing seat 7. The bearing seat 7 is fixed on the support 701, and the transmission end of the roller shaft 6 extends out of the bearing seat 7 and is connected to the electrical assembly.
[0014] The electrical assembly includes a speed reducer 9 and a motor 10. The transmission end of the roller shaft 6 extends out of the bearing seat 7 and is connected to the output shaft of the speed reducer 9 via a coupling 8. The input end of the speed reducer 9 is connected to the output end of the motor 10.
[0015] The spacing of the teeth 501 is determined according to the spacing between the bars of the trash rack, and the width of the drum 5 is the same as that of the trash rack.
[0016] In practical use, the motor 10 and the reducer 9 transmit power to the roller shaft 6 via the coupling 8, driving the wire rope wheel 401 to rotate. This causes the drum support 3 to rise or fall via the wire rope 4, which in turn causes the drum 5 to rise or fall. The length of the drum 5 is the same as the width of the trash rack. The ratchet 11 at both ends of the drum 5 engages with the pawl on the drum support 3 to rotate in one direction, ensuring that the drum 5 can only rotate in one direction. When lowering the drum 5, it rotates clockwise along the trash rack and is lowered into the water until it reaches the bottom of the trash rack. When rising, the drum 5 cannot rotate counterclockwise due to the action of the ratchet 11. The pawl 501 on the drum 5 catches debris. As the reducer 9 rotates, the drum support 3 rises via the wire rope wheel 401 and the wire rope 4, thus bringing the drum 5 out and achieving the purpose of cleaning the front of the trash rack.
[0017] This invention has a simple structure and is easy to operate. It effectively solves the problem of cleaning trash racks in small hydropower stations, reduces labor intensity, saves time and effort, and can be easily cleaned without reducing the load or stopping the unit. It is easy to produce and promote its application, and has good social and economic benefits.
Claims
1. A small-scale hydropower station trash rack cleaning device, comprising a gantry frame, an electrical assembly, and a drum assembly, characterized in that, The gantry (2) is equipped with two pulley groups (1). The wire rope (4) passes around the pulley group (1) and is connected at one end to the drum support (3) of the drum assembly, and at the other end to the wire rope wheel (401). The wire rope wheel (401) is connected to the roller assembly. The transmission end of the roller assembly is connected to the electrical assembly to drive the wire rope wheel (401) to rotate. The drum includes a drum support (3), a drum (5) and a ratchet (11). The drum (5) is provided with evenly distributed teeth (501) along the circumference. The drum (5) is connected to both sides of the drum support (3) through the bearing seat. Both ends of the drum (5) are equipped with ratchet (11). The ratchet (11) cooperates with the pawls on the drum support (3) to achieve unidirectional rotation.
2. The trash rack cleaning device for a small hydropower station according to claim 1, characterized in that, The roller assembly includes a roller shaft (6), a bearing housing (7) and a support (701). The wire rope wheel (401) is mounted on the roller shaft (6). Both ends of the roller shaft (6) are respectively mounted in the bearing housing (7). The bearing housing (7) is fixed on the support (701). The transmission end of the roller shaft (6) extends out of the bearing housing (7) and is connected to the electrical assembly.
3. The small hydropower station trash rack cleaning device according to claim 2, characterized in that, The electrical assembly includes a speed reducer (9) and a motor (10). The transmission end of the roller shaft (6) extends out of the bearing seat (7) and is connected to the output shaft of the speed reducer (9) via a coupling (8). The input end of the speed reducer (9) is connected to the output end of the motor (10).