CN215801473U

CN215801473U - Lifting type cleaning mechanism for trash rack of hydropower station

Info

Publication number: CN215801473U
Application number: CN202121966975.1U
Authority: CN
Inventors: 黄姿慧
Original assignee: Yunnan Agricultural University
Current assignee: Yunnan Agricultural University
Priority date: 2021-08-20
Filing date: 2021-08-20
Publication date: 2022-02-11
Anticipated expiration: 2031-08-20

Abstract

The utility model discloses a lifting type cleaning mechanism for a trash rack of a hydropower station, belonging to the technical field of hydraulic and hydroelectric engineering, and comprising the trash rack arranged at a water inlet of a power generation hole of a dam body, wherein transverse cleaning rods are symmetrically arranged on the front surface and the back surface of the trash rack; a brush body is arranged on one surface of the cleaning rod facing the trash rack; two ends of the cleaning rod are connected with the lifting screw; the upper end of the lifting screw penetrates through the platform of the dam body and is coaxially connected with a worm gear in a threaded manner; the worm wheel is meshed with the worm; the worm is connected with a driving motor. The cleaning mechanism is combined with the trash rack to form the trash rack mechanism with a self-cleaning function, and a double-side synchronous cleaning structure is adopted, so that dirt on the grid can be quickly removed, and meanwhile, the trash rack is not easy to deform and damage.

Description

Lifting type cleaning mechanism for trash rack of hydropower station

Technical Field

The utility model belongs to the technical field of hydraulic and hydroelectric engineering, and particularly relates to a lifting type cleaning mechanism for a trash rack of a hydropower station.

Background

The trash rack is generally arranged at an inlet gate of a power generation tunnel of a hydraulic power plant, mainly adopts a grid type fixed welding structure, and is used for intercepting large-volume or long-length sundries floating or suspended in a river channel and filtering water. After the trash rack is used for a long time, various dirt such as plastics, silkvine and the like can be accumulated on the trash rack. When the dirt accumulated on the trash rack is more, the filtering performance of the trash rack is reduced, the flow speed of water flow is reduced, and the power generation efficiency of the unit is influenced.

To solve this problem, the trash rack is usually cleaned by a person or a ship to remove the dirt on the grid. The two modes can only clean the front side of the trash rack, so that dirt breeding on the back side of the trash rack cannot be removed, and meanwhile, when the single side of the trash rack is clean, the front side of the trash rack is extruded in a one-way mode, so that the trash rack is easy to deform, and the trash rack cannot be cleaned in time.

SUMMERY OF THE UTILITY MODEL

Aiming at the problems, the utility model provides a lifting type cleaning mechanism for a trash rack of a hydropower station, which combines the cleaning mechanism with the trash rack to form the trash rack mechanism with a self-cleaning function.

In order to achieve the purpose, the utility model adopts the technical scheme that:

a lifting type cleaning mechanism for a trash rack of a hydropower station comprises the trash rack arranged at a water inlet of a power generation hole of a dam body, wherein transverse cleaning rods are symmetrically arranged on the front surface and the back surface of the trash rack; a brush body is arranged on one surface of the cleaning rod facing the trash rack; two ends of the cleaning rod are connected with the lifting screw; the upper end of the lifting screw penetrates through the platform of the dam body and is coaxially connected with a worm gear in a threaded manner; the worm wheel is meshed with the worm; the worm is connected with a driving motor.

As a further improvement of the technical scheme, the worm wheels are distributed on two sides of the worm, and the worm is clamped and meshed.

As a further improvement of the technical scheme, the upper end and the lower end of the worm wheel are arranged in the mounting box through bearings.

As a further improvement of the technical scheme, a groove is axially arranged on the outer wall of the lifting screw; and a bulge matched with the groove is arranged in the mounting hole which is used for penetrating through the lifting screw on the mounting box.

As a further improvement of the technical scheme, two ends of the cleaning rod are provided with rollers; vertical sliding grooves are formed in the two side walls of the power generation hole; the roller is positioned in the sliding groove.

Compared with the prior art, the utility model has the advantages that:

this device has adopted and has set up clean mechanism simultaneously at the front and the reverse side of trash rack, through the synchronous cleanness on tow sides, ensures to all clean trash rack two sides fast, simultaneously owing to adopted two-sided synchronous cleanness for clean mechanism is balanced to the extrusion force of trash rack, can not make the trash rack because often receive the single face extrusion and take place to warp.

Drawings

FIG. 1 is a schematic side view of the present invention;

FIG. 2 is a schematic front view of the present invention;

FIG. 3 is a schematic structural view of a lifting screw driven by a worm and gear mechanism;

FIG. 4 is a schematic structural view of an end face of the lifting screw;

fig. 5 is a schematic top view of the mounting box.

In the figure: 1. a dam body; 2. a trash rack; 3. a lifting screw; 4. a cleaning rod; 5. a roller; 6. a chute; 7. a worm gear; 8. a worm; 9. mounting a box; 10. a drive motor; 11. a cover plate; 31. and (4) a groove.

Detailed Description

The following detailed description of the present invention is given for the purpose of better understanding technical solutions of the present invention by those skilled in the art, and the present description is only exemplary and explanatory and should not be construed as limiting the scope of the present invention in any way.

Referring to fig. 1 to 5, in a specific embodiment, the lifting type hydropower station trash rack cleaning mechanism comprises a trash rack 2 arranged at a water inlet of a power generation hole of a dam body 1, wherein transverse cleaning rods 4 are symmetrically arranged on the front surface and the back surface of the trash rack 2; a brush body is arranged on one surface of the cleaning rod 4 facing the trash rack 2; two ends of the cleaning rod 4 are connected with the lifting screw 3; the upper end of the lifting screw rod 3 penetrates through the platform of the dam body 1 and then is coaxially connected with a worm wheel 7 in a threaded manner; the worm wheel 7 is meshed with the worm 8; the worm 8 is connected with a driving motor 10.

Wherein the brush body can be the brush, also can be other intensive flexible quarter butt that distributes on cleaning rod 4, and cleaning rod reciprocates, and the filth that glues hanging on trash rack 2 is cleared away through the brush body.

The trash rack 2 is of a grid structure, vertical bars are uniformly distributed in a grid main body side by side, and the vertical bars are connected through cross bars with wider intervals.

Wherein, when clean 4 short periods of pole, can only set up lifting screw 3 at both ends, when clean 4 long periods of pole, can add extra lifting screw 3 in clean 4 interlude positions of pole and improve the operating stability of clean 4 pole.

As shown in fig. 3, in order to improve the structural stability and the mechanism operation reliability, it is optimized on the basis of the above-mentioned embodiment that the worm wheels 7 are distributed on both sides of the worm 8, and the worm 8 is arranged in a manner of sandwiching and meshing. The worm wheels 7 corresponding to the upper ends of the lifting screw rods 3 on the front and the back surfaces of the trash rack are distributed on two sides of the worm 8, and force balance is achieved by meshing the worm wheels 8 from the two sides.

As shown in fig. 3 and 5, in addition to the above-mentioned embodiments, the worm wheel 7 is installed in the mounting box 9 through bearings at the upper and lower ends thereof. The worm wheels 7 are vertically arranged on two sides of the mounting box 9, and the worm 8 is transversely arranged in the middle of the mounting box 9.

As shown in fig. 4-5, in order to improve the operation stability of the lifting screw 3, it is optimized on the basis of the above-mentioned embodiment that the outer wall of the lifting screw 3 is provided with a groove 31 along the axial direction; and a bulge matched with the groove 31 is arranged in a mounting hole which is used for penetrating through the lifting screw rod 3 on the mounting box 9. The groove 31 is snapped into the protrusion, and the rotation of the lifting screw 3 is limited by the protrusion, ensuring that the lifting screw 3 can only move up and down.

As shown in fig. 2, in order to improve the operation stability of the cleaning rod 4 and prevent the cleaning rod 4 from loosening, it is optimized on the basis of the above embodiment that rollers 5 are arranged at two ends of the cleaning rod 4; vertical sliding grooves 6 are formed in the two side walls of the power generation hole; the roller 5 is positioned in the sliding groove 6. After adopting this structure, cleaning rod 4 reciprocates in spout 6 through the gyro wheel 5 card at both ends, ensures that the brush body of cleaning rod 4 can realize the scrubbing with trash rack surface contact all the time.

The working principle of the utility model is as follows:

after the driving motor 10 is started, the worm 8 is driven to rotate, the worm 8 drives the worm wheel 7 to rotate in a rotating mode, a threaded hole is formed in the center of the worm wheel 7 and is matched with the lifting screw rod 3 to form a driving nut, the worm wheel 7 can drive the lifting screw rod 3 to ascend and descend when rotating, therefore, the cleaning rod 4 at the lower end of the lifting screw rod 3 is enabled to move up and down, the two ends of the cleaning rod 4 are clamped in the sliding groove 6 through the idler wheels 5 to move up and down, the brush body on the cleaning rod 4 is in surface contact with the trash rack 2, and the trash rack is cleaned by the surface cleaning through the up and down movement.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts of the present invention. The foregoing is only a preferred embodiment of the present invention, and it should be noted that there are objectively infinite specific structures due to the limited character expressions, and it will be apparent to those skilled in the art that a plurality of modifications, decorations or changes may be made without departing from the principle of the present invention, and the technical features described above may be combined in a suitable manner; such modifications, variations, combinations, or adaptations of the utility model using its spirit and scope, as defined by the claims, may be directed to other uses and embodiments, or may be learned by practice of the utility model.

Claims

1. A lifting type cleaning mechanism for a trash rack of a hydropower station comprises the trash rack (2) arranged at a water inlet of a power generation hole of a dam body (1), and is characterized in that transverse cleaning rods (4) are symmetrically arranged on the front surface and the back surface of the trash rack (2) respectively; a brush body is arranged on one surface of the cleaning rod (4) facing the trash rack (2); two ends of the cleaning rod (4) are connected with the lifting screw (3); the upper end of the lifting screw (3) penetrates through the platform of the dam body (1) and then is coaxially connected with a worm gear (7) in a threaded manner; the worm wheel (7) is meshed with the worm (8); the worm (8) is connected with a driving motor (10).

2. The lifting type cleaning mechanism for the trash rack of the hydropower station according to claim 1, wherein the worm gears (7) are distributed on two sides of the worm (8) to clamp and mesh the worm (8).

3. The lifting type cleaning mechanism for the trash rack of the hydropower station as claimed in claim 2, wherein the upper end and the lower end of the worm gear (7) are arranged in the mounting box (9) through bearings.

4. The lifting type hydropower station trash rack cleaning mechanism according to claim 3, wherein a groove (31) is axially formed in the outer wall of the lifting screw (3); and a bulge matched with the groove (31) is arranged in the mounting hole which is used for penetrating through the lifting screw rod (3) on the mounting box (9).

5. The lifting type hydropower station trash rack cleaning mechanism according to claim 1, wherein rollers (5) are arranged at two ends of the cleaning rod (4); vertical sliding grooves (6) are formed in the two side walls of the power generation hole; the roller (5) is positioned in the sliding groove (6).