Cleaning equipment for sediments in front of trash rack
By designing guide devices in front of the smudge gate, including fixed pulleys and guide cables, the problem that the grab cannot directly clean up the smudge under the front extension structure of the smudge gate is solved, and a wider silting range and more efficient cleaning effect are achieved.
Patent Information
- Application Number
- CN202421458834.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-25
- Publication Date
- 2025-04-15
- Estimated Expiration
- 2034-06-25
AI Technical Summary
The prior art cannot directly clean up the silt under the front extension structure of the sludge barrier because the grab cannot pass through the extension structure.
A pre-siloed silt cleaning device is designed, and a guide device is adopted to include a first fixed pulley, a second fixed pulley, a third fixed pulley and a guide steel cable. Through these components, the grab can be moved between the door grooves on both sides of the blocking silt, thereby grabbing the deposit.
The external structure of the grab can pass through the sludge barrier is realized, the silt range is expanded, and the silt content in the entire door groove area can be effectively cleaned.
Smart Images
Figure CN222758980U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of silt cleaning, and in particular relates to a silt cleaning device in front of a trash rack. Background Art
[0002] The existing technology of using lifting equipment in conjunction with a grab bucket for underwater dredging is only applicable to dredging the area where the steel wire rope connecting the grab bucket and the lifting equipment naturally droops under the weight of the grab bucket. The dredging range depends on the range within which the lifting equipment boom can move.
[0003] However, some hydropower stations have an overhanging structure in front of the trash rack, that is, the top of some areas in front of the trash rack is not exposed. At the same time, silt often accumulates in front of the trash rack. When a grab bucket is used to clean the silt in front of the trash rack, due to the existence of this overhanging structure, the grab bucket cannot be directly lowered by the lifting equipment to the silt accumulation area in front of the trash rack for silt removal. Utility Model Content
[0004] Details of one or more embodiments of the present invention are set forth in the following drawings and description to make other features, objects, and advantages of the present application more readily apparent.
[0005] The utility model provides a device for cleaning silt in front of a trash rack, which solves the technical problem that a grab bucket cannot directly perform cleaning work on silt in front of the trash rack because the upper part of the dredging area is not exposed to the air. The device has the characteristics of simple structure, convenient installation, high adaptability, and effectively guarantees the dredging range and dredging effect.
[0006] The utility model discloses a device for cleaning sludge in front of a trash rack, comprising a lifting device, a grab bucket, and a steel wire rope connecting the lifting device and the grab bucket, and also comprising a guiding device, wherein the guiding device further comprises a first fixed pulley, a second fixed pulley, a third fixed pulley, and a guiding steel cable; the first fixed pulley is fixedly installed on the top of the rack groove of the trash rack; the second fixed pulley is located below the first fixed pulley and is positioned by a positioning assembly; the third fixed pulley is connected to the steel wire rope; one end of the guiding steel cable is connected to a winch, bypassing the first fixed pulley and the second fixed pulley in the middle, and the other end is fixedly connected to the third fixed pulley; the positioning assembly further comprises a limiting member and a first fixed steel cable; the limiting member is horizontally arranged, and both ends are fixedly connected to the two side door grooves of the trash rack; one end of the first fixed steel cable is fixedly connected to the second fixed pulley, and the other end is slidably connected to the limiting member.
[0007] In some embodiments, the vertical plane where the guide steel cable located between the third fixed pulley and the second fixed pulley is located is parallel to the plane where the two side door slots of the trash rack are located.
[0008] In some embodiments, the positioning assembly also includes a second fixed steel cable, one end of which is connected to the top of the rack groove of the trash rack, and the other end is connected to the first fixed steel cable, and the second fixed steel cable drives the first fixed steel cable to move left and right along the limiting member.
[0009] In some of the embodiments, the rack further comprises a hanger mounted on the top of the rack groove of the trash rack, and the first fixed pulley is fixedly connected to the hanger.
[0010] In some of the embodiments, the lifting device is arranged on the top of the rack groove of the trash rack.
[0011] In some embodiments, the first fixing steel cable is a rigid steel cable.
[0012] In some embodiments, the third fixed pulley is clamped on the steel wire rope by a buckle.
[0013] Compared with the prior art, the beneficial effects of the utility model are:
[0014] The utility model provides a device for cleaning silt in front of a trash rack, which solves the problem that the boom of a lifting device cannot extend to the bottom of an outrigger structure, thereby causing a grab bucket to be unable to grab the silt below the outrigger structure. By arranging a first fixed pulley, a second fixed pulley, a third fixed pulley, and a guide steel cable, the grab bucket is able to move to the space between the gate slots on both sides of the trash rack, thereby grabbing the silt within the range. At the same time, by arranging a positioning component, the guide device can guide the grab bucket in the left and right bank directions in addition to guiding the grab bucket in the upstream and downstream directions, thereby achieving underwater dredging of the entire gate slot area by the grab bucket under the working condition. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:
[0016] Figure 1 A schematic diagram of the structure of a device for cleaning silt in front of a trash rack provided by an embodiment of the utility model;
[0017] In the above figures: 1. first fixed pulley; 2. second fixed pulley; 3. third fixed pulley; 4. guide steel cable; 5. first fixed steel cable; 6. limiter; 7. second fixed steel cable; 8. hanger; 9. lifting device; 10. wire rope; 11. grab; 12. fence groove; 13. door groove. DETAILED DESCRIPTION
[0018] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model is described and illustrated in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the utility model and are not used to limit the utility model. Based on the embodiments provided by the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.
[0019] The utility model provides a device for cleaning silt in front of a trash rack. Figure 1 Schematic diagram of the structure of the sludge cleaning device in front of the trash rack according to an embodiment of the utility model. Figure 1 As shown, the equipment for cleaning sediment in front of the trash rack includes a lifting device 9, a grab bucket 11, and a wire rope 10 connecting the lifting device 9 and the grab bucket 11, and also includes a guiding device, which further includes a first fixed pulley 1, a second fixed pulley 2, a third fixed pulley 3, and a guiding steel cable 4; the first fixed pulley 1 is fixedly installed on the top of the rack groove 12 of the trash rack; the second fixed pulley 2 is located below the first fixed pulley 1 and is positioned by a positioning assembly; the third fixed pulley 3 is connected to the wire rope 10; one end of the guiding steel cable 4 is connected to the winch, bypassing the first fixed pulley 1 and the second fixed pulley 2 in the middle, and the other end is fixedly connected to the third fixed pulley 3; the positioning assembly further includes a limit member 6 and a first fixed steel cable 5; the limit member 6 is horizontally arranged, and both ends are fixedly connected to the two side door grooves 13 of the trash rack; one end of the first fixed steel cable 5 is fixedly connected to the second fixed pulley 2, and the other end is slidably connected to the limit member 6.
[0020] In order to further ensure the desilting area, the vertical plane where the guide steel cable 4 located between the third fixed pulley 3 and the second fixed pulley 2 is located is parallel to the plane where the gate slots 13 on both sides of the trash rack are located.
[0021] In order to facilitate the left and right movement of the first fixed steel cable 5, the positioning assembly also includes a second fixed steel cable 7, one end of the second fixed steel cable 7 is connected to the top of the rack groove 12 of the trash rack, and the other end is connected to the first fixed steel cable 5. The second fixed steel cable 7 drives the first fixed steel cable 5 to move left and right along the limit member 6.
[0022] In order to ensure the stability of the installation, it also includes a hanger 8 installed on the top of the grid groove 12 of the trash rack, and the first fixed pulley 1 is fixedly connected to the hanger 8. Further, the lifting device 9 is arranged on the top of the grid groove 12 of the trash rack.
[0023] In order to ensure the stability of the installation of the second fixed pulley 2, the first fixed steel cable 5 is a rigid steel cable.
[0024] In order to ensure the fixation of the third fixed pulley 3, the third fixed pulley 3 is clamped on the steel wire rope 10 through a buckle.
[0025] The above-mentioned guide device provides conditions for the grab bucket 11 to clear the silt at the bottom of the extended structure of the hydropower station. The grab bucket 11 can be guided by a simple fixed pulley and a steel cable. It has a simple structure, is easy to install, has high adaptability, and can be adjusted according to the conditions of the hydraulic structure. The above-mentioned silt cleaning equipment in front of the trash rack realizes the movement of the grab bucket 11 to the space between the gate slots 13 on both sides of the trash rack by setting the first fixed pulley 1, the second fixed pulley 2, the third fixed pulley 3, and the guide steel cable 4, so as to realize the grabbing of silt within the range. At the same time, by setting the positioning component, the guide device can guide the grab bucket 11 in the left and right bank directions in addition to guiding the grab bucket 11 in the upstream and downstream directions, so as to realize the underwater silt clearing of the grab bucket 11 in the entire gate slot 13 area under this working condition.
[0026] The above-mentioned equipment for cleaning silt in front of the trash rack is suitable for cleaning silt in front of the trash rack that cannot be directly performed by the grab bucket 11, as well as other similar working conditions where the grab bucket 11 cannot directly clean silt. Specifically, the first fixed pulley 1 and the hanger 8 are installed in the appropriate area on the top of the rack groove 12, and a winch is provided, which has the following functions: retracting and releasing the guide steel cable 4; horizontally fixing an I-beam as a limiter 6 in the trash rack gate groove 13 by a jack, limiting the second fixed pulley 2 by the first fixed steel cable 5, and connecting the second fixed steel cable 7 by the first fixed steel cable 5, which is used to adjust the position of the second fixed pulley 2 along the left and right banks of the gate groove 13. The action direction of the guide steel cable 4 is changed by the second fixed pulley 2, one end of the guide steel cable 4 is connected to the first fixed pulley 1, and the other end is connected to the third fixed pulley 3, and the connecting device connecting the guide steel cable 4 to one end of the third fixed pulley 3 can be removed and hung. The third fixed pulley 3 is fixed on the wire rope 10 of the lifting device 9. The lifting device 9 lifts and lowers the grab bucket 11 and the wire rope 10, and the grab bucket 11 grabs the bottom sediment.
[0027] The working process of the above-mentioned trash rack front sediment cleaning equipment is as follows:
[0028] During construction, the guide steel cable 4 is temporarily not connected to the third fixed pulley 3. The construction process is:
[0029] (1) The lifting device 9 lowers the grab bucket 11 and the wire rope 10 so that the grab bucket 11 reaches below the plane where the second fixed pulley 2 is located;
[0030] (2) The diver goes into the water to connect the guide cable 4 and the third fixed pulley 3;
[0031] (3) The winch equipped with the first fixed pulley 1 and the hanger 8 retracts the guide cable 4, shortening the guide cable 4 and pulling the third fixed pulley 3 to move downstream, and the third fixed pulley 3 drives the grab bucket 11 and the wire rope 10 to move downstream until the grab bucket 11 is located directly above the sediment to be grabbed.
[0032] (4) The grab bucket 11 grabs the sediment and lifts it up. The winch equipped with the first fixed pulley 1 and the hanger 8 slowly lengthens the guide cable 4 until the grab bucket 11 and the wire rope 10 droop naturally. The diver goes into the water to remove the connection buckle between the wire rope 10 and the third fixed pulley 3. The lifting device 9 retracts the wire rope 10, and the grab bucket 11 and the sediment are lifted out of the water and unloaded.
[0033] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.
[0034] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.
Claims
1. A device for cleaning silt in front of a trash rack, comprising a lifting device, a grab bucket, and a steel wire rope connecting the lifting device and the grab bucket, characterized in that: Also includes a guide device, the guide device further includes: a first fixed pulley, wherein the first fixed pulley is fixedly mounted on the top of the rack groove of the trash rack; a second fixed pulley, the second fixed pulley being located below the first fixed pulley and being positioned by a positioning assembly; a third fixed pulley, the third fixed pulley being connected to the steel wire rope; A guide steel cable, one end of which is connected to the winch, passing around the first fixed pulley and the second fixed pulley in the middle, and the other end of which is fixedly connected to the third fixed pulley; The positioning assembly further includes a limiter and a first fixed steel cable; the limiter is horizontally arranged, and both ends are fixedly connected to the two side door grooves of the trash rack; one end of the first fixed steel cable is fixedly connected to the second fixed pulley, and the other end is slidably connected to the limiter.
2. The equipment for cleaning sludge in front of trash rack according to claim 1, characterized in that: The vertical plane where the guide steel cable located between the third fixed pulley and the second fixed pulley is located is parallel to the plane where the door slots on both sides of the trash rack are located.
3. The equipment for cleaning sludge in front of trash rack according to claim 1, characterized in that: The positioning assembly also includes a second fixed steel cable, one end of which is connected to the top of the rack groove of the trash rack, and the other end is connected to the first fixed steel cable, and the second fixed steel cable drives the first fixed steel cable to move left and right along the limiting member.
4. The equipment for cleaning sludge in front of trash rack according to claim 1, characterized in that: It also includes a hanger mounted on the top of the rack groove of the trash rack, and the first fixed pulley is fixedly connected to the hanger.
5. The equipment for cleaning sludge in front of trash rack according to claim 1, characterized in that: The lifting device is arranged on the top of the rack groove of the trash rack.
6. The equipment for cleaning sludge in front of trash rack according to claim 1, characterized in that: The first fixing steel cable is a rigid steel cable.
7. The equipment for cleaning sludge in front of trash rack according to claim 1, characterized in that: The third fixed pulley is clamped on the steel wire rope through a buckle.