A pollution cleaning tooth harrow

Abstract

The utility model discloses a kind of pollution cleaning tooth harrows, including mounting bracket, rotating harrow claw and fixed harrow claw, mounting bracket includes crossbeam and stringer, crossbeam is spaced apart and is connected by multiple stringers of interval arrangement, crossbeam rear portion is equipped with mounting seat, multiple rotating harrow claws are hinged on mounting seat;Hydraulic cylinder is equipped on stringer, and the output end of each hydraulic cylinder is hinged with a rotating harrow claw, the inner edge surface of rotating harrow claw is provided with sawtooth groove, crossbeam front end is equipped with fixed harrow frame, and the both sides of rotating harrow claw are provided with blocking net.The utility model discloses a kind of pollution cleaning tooth harrow, by the cooperation of rotating harrow claw, fixed harrow frame and the both sides blocking net, when folding, form a three-sided enclosed " harrow bucket " structure, can effectively hold dirt, prevent it from falling from lateral in lifting process, greatly improve the pollution cleaning efficiency.

Description

Technical Field

[0001] This utility model relates to the field of display technology, and more specifically, to a cleaning toothed rake. Background Technology

[0002] Trash grates are typically installed at the water inlet of power plant turbines or the water intake of pumping stations to intercept floating debris and other contaminants in the water flow. To prevent excessive accumulation of debris on the trash grates, which could lead to increased head loss before and after the grates or damage to the grates structure, they need to be cleaned regularly using a trash grab bucket.

[0003] Existing cleaning grab buckets primarily rely on the contact between the guide wheels and the grid surface during their ascent and descent to maintain the insertion depth of the grab bucket's shovel teeth (or rake teeth) between the grid bars. This depth is crucial: if inserted too deeply, the shovel teeth may interfere with or snag on the internal cross bracing structure of the grid bars, posing a risk of equipment damage or even safety accidents; if inserted too shallowly or not at all, stubborn dirt stuck in the gaps between the grid bars cannot be effectively removed, resulting in poor cleaning performance. To address the issue of excessive shovel tooth insertion during grab bucket tilting, existing designs typically place the lower guide wheel closer to the end than the shovel teeth. However, in practical applications, when there is a significant amount of dirt accumulated on the grid surface, the lower guide wheel may crush the dirt layer during the grab bucket's descent. This action lifts the entire grab bucket relative to the grid, preventing the shovel teeth from inserting into the gaps between the grid bars to the expected depth, severely impacting cleaning efficiency and effectiveness.

[0004] Therefore, there is an urgent need for a new type of cleaning rake that can be stably and reliably inserted into the gaps between the grid bars, effectively accommodate and grab dirt, and avoid interference with the grid structure. Utility Model Content

[0005] This utility model provides a cleaning rake, which optimizes the cooperation structure between the rotating rake claw and the fixed rake frame, and adds a side baffle to achieve stable insertion depth, efficient cleaning and prevent side leakage of dirt.

[0006] According to one aspect of this utility model, a cleaning rake is provided, including a mounting frame, rotating rake claws, and fixed rake claws. The mounting frame includes a crossbeam and longitudinal beams. The crossbeams are arranged in parallel at intervals and connected by a plurality of longitudinal beams arranged at intervals. A mounting seat is installed at the rear of the crossbeam, and a plurality of rotating rake claws are hinged to the mounting seat. A hydraulic cylinder is installed on the longitudinal beam, and a rotating rake claw is hinged to the output end of each hydraulic cylinder. The inner edge of the rotating rake claw is provided with a serrated groove. A fixed rake frame is installed at the front end of the crossbeam, and baffles are provided on both sides of the rotating rake claws.

[0007] Based on the above scheme, the preferred embodiment is that the rotating rake claw includes a mounting beam, ribs and connecting columns. The ribs are installed parallel to each other at intervals at the bottom of the mounting beam. Adjacent ribs are connected through the mounting beam, and the free ends of the ribs are connected through the connecting columns.

[0008] Preferably, based on the above scheme, the rib is arc-shaped, and the serrated groove is provided on the inner edge surface of the rib.

[0009] Based on the above scheme, the preferred embodiment is that the baffle is welded to the ribs at both ends, and when the rotating rake claw and the fixed rake frame are closed, the rotating rake claw, the fixed rake frame and the baffle form an accommodating space.

[0010] In a preferred embodiment based on the above scheme, the rotating rake claw is further provided with a connecting seat, and the output end of the hydraulic cylinder is hinged to the connecting seat.

[0011] Based on the above scheme, preferably, guide frames are provided at both ends of the crossbeam, and transverse guide wheels and longitudinal guide wheels are rotatably mounted on the guide frames, with the central axis of the transverse guide wheel being perpendicular to the central axis of the longitudinal guide wheel.

[0012] This utility model discloses a cleaning rake that, through the cooperation of rotating rake claws, fixed rake frame, and side guard nets, forms a three-sided enclosed "rake bucket" structure when closed, which can effectively hold the dirt and prevent it from falling from the side during the lifting process, thus greatly improving the cleaning efficiency.

[0013] This invention no longer relies entirely on the contact between the guide wheels and the grid surface to maintain the insertion depth. Hydraulic drive provides powerful closing force, enabling the serrated rotating rake claws to overcome slight resistance and reliably insert into the grid gaps to the specified depth, removing stuck debris. The guide wheel assembly primarily serves to stabilize operation and prevent tipping, reducing sensitivity to debris accumulation.

[0014] The rotating rake claw of this utility model adopts a frame structure composed of mounting beams, ribs and connecting plates, which has high strength and can withstand the load generated when cleaning large or entangled dirt. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. In the drawings: Figure 1 This is a three-dimensional structural diagram of the cleaning rake of this utility model.

[0016] Figure 2 for Figure 1 A 3D view of the assembled cleaning rake.

[0017] Figure 3 for Figure 1 A 3D view of the open state of the medium-sized cleaning rake.

[0018] Figure 4 for Figure 1 A three-dimensional schematic diagram of the rotating rake claw.

[0019] Figure 5 for Figure 1 A 3D view of the central rake frame.

[0020] Figure 6 for Figure 1 A three-dimensional view of the guide frame.

[0021] Explanation of icon numbers: 1. Mounting frame; 11. Crossbeam; 12. Longitudinal beam; 13. Mounting base; 2. Rotating rake claw; 21. Mounting beam; 22. Rib plate; 221. Serrated groove; 23. Connecting column; 24. Connecting base; 3. Fixed rake frame; 4. Hydraulic cylinder; 5. Baffle net; 6. Guide frame; 61. Transverse guide wheel; 62. Longitudinal guide wheel. Detailed Implementation

[0022] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit its scope.

[0023] It should be understood that, when used in this specification and the appended claims, the term "comprising" indicates the presence of a descriptive feature, integral, step, operation, element, and / or component, but does not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components, and / or sets.

[0024] To keep the drawings concise, only the parts relevant to this invention are shown schematically in each figure, and they do not represent the actual structure of the product. Furthermore, for ease of understanding, in some figures, only one of the components with the same structure or function is schematically depicted, or only one is labeled. In this document, "one" not only means "only one," but can also mean "more than one."

[0025] It should also be further understood that the term “and / or” as used in this application specification and the appended claims means any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.

[0026] In the embodiments shown in the accompanying drawings, the directional indications (such as up, down, left, right, front, and back) used to explain the structure and movement of the various components of this invention are relative rather than absolute. These descriptions are appropriate when these components are in the positions shown in the drawings. If the descriptions of the positions of these components change, these directional indications also change accordingly.

[0027] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0028] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the specific implementation methods of this utility model will be described below with reference to the accompanying drawings. Obviously, the drawings described below are merely some embodiments of this utility model. For those skilled in the art, other drawings and other implementation methods can be obtained based on these drawings without any creative effort.

[0029] Please see Figure 1 and combined Figure 2 , Figure 3 and Figure 4 As shown, the present invention provides a cleaning rake, which includes a mounting frame 1, a rotating rake claw 2, a fixed rake frame 3, a hydraulic cylinder 4, and a baffle net 5.

[0030] Mounting frame 1, serving as the core load-bearing and connecting frame, includes two parallel crossbeams 11 and multiple longitudinal beams 12 welded between them. Mounting bases 13 are welded to the upper rear of the crossbeams 11, and two rotating claws 2 are respectively hinged to the mounting bases 13 on the left and right sides via pins, allowing them to rotate around the hinge points.

[0031] The rotating rake claw 2 of this invention is a component that performs the cleaning action. See also... Figure 3 Each rotating rake 2 includes a long strip mounting beam 21, multiple parallel arc-shaped ribs 22 welded to the bottom of the mounting beam 21, and multiple interlaced connecting columns 23 welded to all the ribs 22.

[0032] Dense serrated grooves 221 are machined on the inner edge surface of all ribs 22 (i.e., the side facing the fixed rake frame 3) to enhance the ability to grip and tear dirt. A connecting seat 24 is also welded onto the mounting beam 21.

[0033] The cylinder body of hydraulic cylinder 4 is mounted on longitudinal beam 12, and its piston rod output end is hinged to connecting seat 24 on rotating rake claw 2. By controlling the synchronous extension and retraction of hydraulic cylinder 4 through an external hydraulic system, the two rotating rake claws 2 can be driven to perform opening or closing actions.

[0034] The fixed rake frame 3 is fixedly installed at the front end of the bottom crossbeam 11, serving as a fixed clamping surface when closed. For example, Figure 5 As shown, the fixed rake frame 3 of this utility model includes fixed rake teeth 34, mounting plate 31, connecting plate 32 and partition plate 33. There are two mounting plates 31, and mounting holes are provided on their surfaces. The two mounting plates 31 are spaced apart and connected at the bottom by the connecting plate 32. The partition plate 33 is provided between the connecting plate 32 and the mounting plate 31, or between two adjacent mounting plates 31. The rake teeth 34 are inserted into the mounting holes and one end is locked by a nut.

[0035] The baffle 5 is a metal mesh structure, welded to the outermost ribs 22 of the two rotating rake claws 2. For example... Figure 1 and Figure 2 As shown, when the rotating rake claw 2 closes to the fixed rake frame 3 under the drive of the hydraulic cylinder 4, the two rotating rake claws 2, the fixed rake frame 3, and the baffles 5 on both sides together form a box-type receiving space with only the top and rear openings, which can effectively prevent dirt from sliding out from the side.

[0036] Guide frames 6 are welded to both ends of the crossbeam 11. Figure 6 As shown, each guide frame 6 is equipped with a transverse guide wheel 61 and a longitudinal guide wheel 62 via bearings. The central axis of the transverse guide wheel 61 is horizontal, and it contacts the side guide rail of the trash rack to limit the lateral sway of the rake. The central axis of the longitudinal guide wheel 62 is vertical, and it contacts the front of the trash rack to limit the distance between the rake and the rack surface and guide its vertical movement. This guiding system ensures that the cleaning rake maintains a stable posture under complex working conditions, allowing the rotating rake claws 2 to accurately align with the gaps between the rack bars.

[0037] During cleaning, the toothed rake is connected to the lifting equipment via a lifting lug (not shown in the figure) on the upper part of the mounting frame 1. During the lowering process, the rotating rake claw 2 is in the open state and descends along the trash rack under the guidance of the guide frame 6. When it reaches the predetermined cleaning position, the hydraulic system drives the hydraulic cylinder 4 to retract, pulling the rotating rake claw 2 to rotate around the hinge point towards the fixed rake frame 3 to close. During this process, the serrated grooves 221 of the rotating rake claw 2 insert into the gaps between the rack bars, scraping and grabbing the dirt attached to the rack surface and stuck in the gaps, and gathering it into the receiving space formed by the rotating rake claw 2, the fixed rake frame 3, and the baffle 5. After closing, the lifting equipment lifts the entire toothed rake, transports the captured dirt to the unloading point, and finally the hydraulic cylinder 4 pushes out, the rotating rake claw 2 opens, and the unloading is completed.

[0038] This utility model discloses a cleaning rake that, through the cooperation of rotating rake claws 2, fixed rake frame and side guard nets, forms a three-sided enclosed "rake bucket" structure when closed, which can effectively hold the dirt and prevent it from falling from the side during the lifting process, thus greatly improving the cleaning efficiency.

[0039] This invention no longer relies entirely on the contact between the guide wheel and the grid surface to maintain the insertion depth. The hydraulic drive provides a powerful closing force, enabling the serrated rotating rake claw to overcome slight resistance and reliably insert into the grid gap to the specified depth, removing stuck debris. The guide wheel assembly mainly serves to stabilize operation and prevent tipping, reducing sensitivity to the state of debris accumulation.

[0040] The rotating rake claw of this utility model adopts a frame structure composed of mounting beams, ribs and connecting plates, which has high strength and can withstand the load generated when cleaning large or entangled dirt.

[0041] Finally, the method described in this application is merely a preferred embodiment and is not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. A cleaning rake, characterized in that, The device includes a mounting frame, rotating rake claws, and fixed rake claws. The mounting frame includes a crossbeam and longitudinal beams. The crossbeams are arranged in parallel at intervals and connected by multiple longitudinal beams. A mounting base is installed at the rear of the crossbeam, and multiple rotating rake claws are hinged to the mounting base. A hydraulic cylinder is installed on the longitudinal beam, and a rotating rake claw is hinged to the output end of each hydraulic cylinder. The inner edge of the rotating rake claw is provided with a serrated groove. A fixed rake frame is installed at the front end of the crossbeam, and baffles are provided on both sides of the rotating rake claws.

2. A cleaning rake as described in claim 1, characterized in that, The rotating rake claw includes a mounting beam, ribs, and connecting columns. The ribs are installed parallel to each other at intervals at the bottom of the mounting beam. Adjacent ribs are connected through the mounting beam, and the free ends of the ribs are connected through the connecting columns.

3. A cleaning rake as described in claim 2, characterized in that, The rib is arc-shaped, and the serrated groove is provided on the inner edge surface of the rib.

4. A cleaning rake as described in claim 3, characterized in that, The baffle is welded to the ribs at both ends. When the rotating rake claw and the fixed rake frame are closed, the rotating rake claw, the fixed rake frame and the baffle form an accommodating space.

5. A cleaning rake as described in claim 1, characterized in that, The rotating rake claw is also provided with a connecting seat, and the output end of the hydraulic cylinder is hinged to the connecting seat.

6. A cleaning rake as described in claim 1, characterized in that, Guide frames are provided at both ends of the crossbeam, and transverse guide wheels and longitudinal guide wheels are rotatably mounted on the guide frames. The central axis of the transverse guide wheel is perpendicular to the central axis of the longitudinal guide wheel.

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