A rake opening and closing device of a moving rail type grid cleaner
By installing hydraulic cylinders in the moving-rail bar screen and utilizing the directional force of the triangular rotating arm, combined with a lubrication mechanism, the problems of equipment maintenance safety and operational reliability have been solved, achieving fully automatic operation and reducing the failure rate.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHENGDU KAIYAMEI MASCH MFG CO LTD
- Filing Date
- 2025-06-09
- Publication Date
- 2026-06-09
AI Technical Summary
When repairing the hydraulic cylinder of the existing moving-rail bar screen in harsh environments, maintenance personnel need to go down into the channel to operate, which poses a safety risk and makes equipment maintenance inconvenient.
The hydraulic cylinder is installed on the top of the grating pool. The power is transmitted and the direction is changed through the triangular swing arm. The vertical force is converted into the horizontal force by the push rod and the triangular swing arm, which drives the rake bucket to open and close the rake. At the same time, a lubrication mechanism is designed to reduce the extension and retraction resistance of the hydraulic cylinder.
It enables fully automated operation of the equipment, reduces the failure rate, improves maintenance safety, and reduces the extension and retraction resistance of the hydraulic cylinder through the lubrication mechanism.
Smart Images
Figure CN224331683U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of bar screen cleaning machines, specifically a moving-rail type bar screen cleaning machine with opening and closing rakes. Background Technology
[0002] As is well known, the moving rail bar screen (also known as "mobile bar screen" or "gantry bar screen cleaner") is a high-efficiency cleaning device used in sewage treatment, pumping stations, hydropower stations and other occasions. It is mainly used to intercept and remove suspended solids, garbage, aquatic plants and other impurities in water bodies to ensure the normal operation of subsequent treatment equipment.
[0003] The principle of the moving rail type bar screen is that a single steel wire rope and a hydraulic push rod device control the moving track. The drive motor drives the steel wire rope drum to extend and retract the steel wire rope, so that the bar screen buckets rise and fall along the track to complete the process of opening the rake, lowering the rake, closing the rake, raising the rake, and unloading the slag.
[0004] A utility model patent with patent authorization announcement number CN205307956U discloses a bar screen cleaning machine, including a frame assembly, a rotary rake plate, a drive chain, a drive wheel, a driven wheel, a drive device, a magnetic roller, and a slag collection bin. The frame assembly is equipped with a rotary rake plate; drive chains are provided on both sides and in the middle of the rotary rake plate in the width direction; a drive wheel and a driven wheel are respectively provided at both ends of the rotary rake plate; the drive wheel is connected to the drive device; the drive device is located on the top of the frame assembly; a magnetic roller is provided on one side of the drive wheel, and a slag collection bin is provided below the drive wheel and the magnetic roller.
[0005] However, existing moving-rail bar screens are generally used in deeper channels, ranging from 3 to 12 meters in length and no more than 2 meters in width. These are coarse bar screens, and the working environment is relatively harsh. The hydraulic cylinders that operate the opening and closing actions of the moving-rail bar screens are typically installed about 1 meter above the water surface in the channel. When repairing the hydraulic cylinders, maintenance personnel need to go down into the channel. If there is no water in the ditch, a ladder can be used for operation; if there is normal water in the channel, the maintenance operation is quite dangerous. Utility Model Content
[0006] The purpose of this utility model is to provide an opening and closing device for a moving-rail bar screen cleaner, which solves the problem that the working environment of the existing moving-rail bar screen cleaner is relatively harsh. Generally, the hydraulic cylinder for opening and closing the hydraulic cylinder of the moving-rail bar screen cleaner is installed about 1 meter above the water surface of the channel. When repairing the hydraulic cylinder, the maintenance personnel need to go down into the channel. If there is no water in the ditch, a ladder can be used for operation; if there is normal water in the channel, it makes the maintenance operation relatively dangerous.
[0007] To achieve the above objectives, this utility model provides the following technical solution: a moving-rail type bar screen cleaning machine with opening and closing rakes, comprising a bar screen channel, the inner wall of which is provided with a bar screen, a frame at the upper end of which is provided with a rotating fulcrum, a swing arm at the rotating fulcrum, a sliding sleeve on the outer side of the swing arm, a grab rake on the sliding sleeve, a winding assembly on the frame, a wire rope on the winding assembly, the wire rope being fixedly connected to the sliding sleeve, a fixing frame at the upper end of the bar screen channel and on the right side of the frame, a hydraulic cylinder on the fixing frame, a push rod at the telescopic end of the hydraulic cylinder, a bracket on the inner right side wall of the bar screen channel, a triangular rotating arm on the bracket, the triangular rotating arm being hinged to the push rod, a crossbar on the triangular rotating arm, and the crossbar being hinged to the swing arm.
[0008] Preferably, a moving rail guide groove is provided at the bottom inner side of the grid channel. The moving rail guide groove contacts the swing rod, and the swing rod can be moved and guided by the moving rail guide groove.
[0009] Preferably, a hydraulic station is provided at the upper end of the bar screen channel, and an electrical control box is provided at the upper end of the bar screen channel and to the right of the hydraulic station. The installation of the hydraulic station and the electrical control box can ensure the normal operation of the opening and closing device of the moving rail bar screen cleaner.
[0010] Preferably, the fixing frame is provided with a lubrication mechanism, which includes an oil storage box. The oil storage box is fixedly connected to the left end of the fixing frame. A guide pipe is fixedly connected to the inner wall of the oil storage box. An end plate is fixedly connected to the bottom inner side of the oil storage box. A spring is welded to the right end of the end plate. A sealing plate is welded to the other end of the spring. The sealing plate is slidably connected to the oil storage box. A plug is fixedly connected to the vertical part of the sealing plate. The plug is slidably connected to the guide hole of the oil storage box. A traction line is fixedly connected to the vertical part of the sealing plate. The traction line is slidably connected to the oil storage box. Through the traction action of the traction line, the sealing plate can drive the plug to disengage from the guide hole of the oil storage box, so as to guide the lubricating oil for use.
[0011] Preferably, a receiving shell is fixedly sleeved on the outer side of the inclined portion of the guide pipe. The receiving shell is slidably connected to the telescopic end of the hydraulic cylinder. By setting the receiving shell, the lubricating oil can be received, thereby lubricating the hydraulic cylinder.
[0012] Preferably, the left end of the traction line is fixedly connected to an end ball, which contacts the oil reservoir. The end ball facilitates the movement of the traction line by pulling it.
[0013] Preferably, a guide post one is fixedly connected to the inner wall of the oil storage box, and the guide post one is in contact with the traction line. A guide post two is fixedly connected to the inner wall of the oil storage box, and the guide post two is in contact with the traction line. By using the guide post one and the guide post two together, the traction line can be guided.
[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0015] 1. This utility model installs a hydraulic cylinder on top of the grating channel, using a triangular swing arm to transmit power and change direction. The reciprocating stroke of the hydraulic cylinder, through a push rod and the triangular swing arm, converts the vertical force of the hydraulic cylinder into a horizontal force, pushing the swing arm to rotate along the pivot point, thereby driving the bottom rake bucket to open and close. This equipment can operate fully automatically, with a reduced failure rate, and is safe and convenient to maintain.
[0016] 2. This utility model moves the traction line by pulling the end ball, causing the sealing plate to move the plug away from the guide hole of the oil storage box. With the help of the guide pipe and the receiving shell, the lubricating oil can be guided, stored and used, thereby lubricating the extension and retraction end of the hydraulic cylinder to reduce the extension and retraction resistance of the hydraulic cylinder. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0018] Figure 2 For the present utility model Figure 1 Side view;
[0019] Figure 3 For the present utility model Figure 1 Enlarged view of the hydraulic cylinder;
[0020] Figure 4 For the present utility model Figure 3 Enlarged view of the lubrication mechanism.
[0021] In the diagram: 1. Bar screen channel; 2. Bar screen; 3. Frame; 4. Rotating fulcrum; 5. Swing arm; 6. Sliding sleeve; 7. Grab rake; 8. Winding assembly; 9. Wire rope; 10. Moving rail guide groove; 11. Fixed frame; 12. Hydraulic cylinder; 13. Push rod; 14. Bracket; 15. Triangular swing arm; 16. Crossbar; 17. Hydraulic station; 18. Electrical control box; 19. Lubrication mechanism; 190. Oil reservoir; 191. Guide pipe; 192. Receiving shell; 193. End plate; 194. Spring; 195. Sealing plate; 196. Plug; 197. Traction line; 198. Guide post one; 199. Guide post two. Detailed Implementation
[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0023] Please see Figure 1 , Figure 2 , Figure 3 , Figure 4 A moving-rail type bar screen cleaning machine with opening and closing rake device includes a bar screen channel 1, a bar screen 2 installed on the inner wall of the bar screen channel 1, a frame 3 installed at the upper end of the bar screen channel 1, a rotating fulcrum 4 installed on the frame 3, a swing arm 5 installed on the rotating fulcrum 4, a sliding sleeve 6 installed on the outer side of the swing arm 5, a grab rake 7 installed on the sliding sleeve 6, a winding assembly 8 installed on the frame 3, a wire rope 9 installed on the winding assembly 8, the wire rope 9 being fixedly connected to the sliding sleeve 6, a fixed frame 11 installed at the upper end of the bar screen channel 1 and located on the right side of the frame 3, a hydraulic cylinder 12 installed on the fixed frame 11, a push rod 13 installed at the telescopic end of the hydraulic cylinder 12, a bracket 14 installed on the inner right side wall of the bar screen channel 1, a triangular rotating arm 15 installed on the bracket 14, the triangular rotating arm 15 being hinged to the push rod 13, a crossbar 16 installed on the triangular rotating arm 15, and the crossbar 16 being hinged to the swing arm 5.
[0024] Please see Figure 1 , Figure 2 The bottom inner side of the bar screen channel 1 is provided with a moving rail guide groove 10, which contacts the swing rod 5. The moving rail guide groove 10 can guide the swing rod 5 to move. A hydraulic station 17 is provided at the upper end of the bar screen channel 1. An electrical control box 18 is provided at the upper end of the bar screen channel 1 and to the right of the hydraulic station 17. The hydraulic station 17 and the electrical control box 18 can ensure the normal operation of the opening and closing device of the moving rail bar screen cleaner.
[0025] Please see Figure 1 , Figure 2 , Figure 3 , Figure 4A lubrication mechanism 19 is provided on the fixed frame 11. The lubrication mechanism 19 includes an oil reservoir 190. The oil reservoir 190 is fixedly connected to the left end of the fixed frame 11. A guide pipe 191 is fixedly connected to the inner wall of the oil reservoir 190. An end plate 193 is fixedly connected to the bottom inner side of the oil reservoir 190. A spring 194 is welded to the right end of the end plate 193. A sealing plate 195 is welded to the other end of the spring 194. The sealing plate 195 is slidably connected to the oil reservoir 190. A plug 196 is fixedly connected to the vertical part of the sealing plate 195. The plug 196 is slidably connected to the guide hole of the oil reservoir 190. A traction line 197 is fixedly connected to the vertical part of the sealing plate 195. The traction line 197 is slidably connected to the oil reservoir 190. Through the traction action of the traction line 197, the sealing plate 195 can drive the plug 196 to disengage from the guide hole of the oil reservoir 190, so as to guide the lubricating oil for use.
[0026] Please see Figure 1 , Figure 2 , Figure 3 , Figure 4 A receiving shell 192 is fixedly sleeved on the outer side of the inclined part of the guide pipe 191. The receiving shell 192 is slidably connected to the telescopic end of the hydraulic cylinder 12. The receiving shell 192 can receive the lubricating oil and thus lubricate the hydraulic cylinder 12. The left end of the traction line 197 is fixedly connected to an end ball, which contacts the oil storage box 190. The end ball facilitates the movement of the traction line 197.
[0027] Please see Figure 1 , Figure 2 , Figure 3 , Figure 4 The inner wall of the oil reservoir 190 is fixedly connected to a guide post 198, which contacts the traction line 197. The inner wall of the oil reservoir 190 is also fixedly connected to a guide post 199, which contacts the traction line 197. Through the cooperation of the guide post 198 and the guide post 199, the traction line 197 can be guided.
[0028] The specific implementation process of this utility model is as follows: In use, the hydraulic cylinder 12 drives the telescopic end to move the push rod 13. Under the hinged relationship, the drive triangular rotating arm 15 deflects, converting the vertical thrust of the hydraulic cylinder 12 into a horizontal force, which pushes the crossbar 16 to move, causing the swing arm 5 to rotate along the rotation fulcrum 4, thereby driving the grab rake 7 at the bottom of the grid channel 1 to achieve the closing action, scooping the intercepted slag, debris, etc. into the grab rake 7, and then the winding assembly 8 drives the wire rope drum. The steel wire rope 9 is wound to raise and lower the grab rake 7 along the track, thereby lifting the grab rake 7 to the slag outlet to unload the slag, debris, etc. Then, the telescopic end is retracted and reset by the hydraulic cylinder 12. Similarly, under the action of the push rod 13, triangular rotating arm 15, crossbar 16 and other structures, the vertical pull of the hydraulic cylinder 12 is converted into a horizontal pull, which pulls the swing arm 5 to rotate along the pivot point 4, thereby driving the grab rake 7 on the upper part of the swing arm 5 to open the rake and complete one action cycle.
[0029] By pulling the ball to the left, the traction line 197 is moved, causing it to slide along the surfaces of guide post 198 and guide post 199 to ensure stable movement. This, in turn, moves the sealing plate 195, causing the spring 194 to deform. Ultimately, the plug 196 is disengaged from the guide hole of the oil reservoir 190. Under the guidance of the guide pipe 191, the lubricating oil is guided to flow into the receiving shell 192. Finally, the lubricating oil comes into contact with the extension end of the hydraulic cylinder 12, lubricating the hydraulic cylinder 12 and reducing its extension resistance.
[0030] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A device for opening and closing a rake of a moving-rail grid cleaner, comprising a grid channel (1), characterized in that: The inner wall of the bar screen channel (1) is provided with a bar screen (2). A frame (3) is provided at the upper end of the bar screen channel (1). A rotating fulcrum (4) is provided on the frame (3). A swing arm (5) is provided on the rotating fulcrum (4). A sliding sleeve (6) is provided on the outside of the swing arm (5). A grab rake (7) is provided on the sliding sleeve (6). A winding assembly (8) is provided on the frame (3). A wire rope (9) is provided on the winding assembly (8). The wire rope (9) is fixedly connected to the sliding sleeve (6). A fixed frame (11) is provided at the upper end of the channel (1) and on the right side of the frame (3). A hydraulic cylinder (12) is provided on the fixed frame (11). A push rod (13) is provided at the telescopic end of the hydraulic cylinder (12). A bracket (14) is provided on the inner right side wall of the grid channel (1). A triangular rotating arm (15) is provided on the bracket (14). The triangular rotating arm (15) is hinged to the push rod (13). A crossbar (16) is provided on the triangular rotating arm (15). The crossbar (16) is hinged to the swing arm (5).
2. The device according to claim 1, characterized in that: The bottom inner side of the grid channel (1) is provided with a moving rail guide groove (10), which is in contact with the swing rod (5).
3. The device according to claim 1, characterized in that: A hydraulic station (17) is provided at the upper end of the bar screen channel (1), and an electrical control box (18) is provided at the upper end of the bar screen channel (1) and to the right of the hydraulic station (17).
4. The device as claimed in claim 1, wherein: A lubrication mechanism (19) is provided on the fixed frame (11). The lubrication mechanism (19) includes an oil reservoir (190). The oil reservoir (190) is fixedly connected to the left end of the fixed frame (11). A guide pipe (191) is fixedly connected to the inner wall of the oil reservoir (190). An end plate (193) is fixedly connected to the bottom inner side of the oil reservoir (190). A spring (194) is welded to the right end of the end plate (193). (194) has a sealing plate (195) welded to the other end. The sealing plate (195) is slidably connected to the oil storage box (190). A plug (196) is fixedly connected to the vertical part of the sealing plate (195). The plug (196) is slidably connected to the guide hole of the oil storage box (190). A traction line (197) is fixedly connected to the vertical part of the sealing plate (195). The traction line (197) is slidably connected to the oil storage box (190).
5. A device for opening and closing a rake of a travelling-rail grid cleaner according to claim 4, characterized in that: A receiving shell (192) is fixedly sleeved on the outside of the inclined part of the guide pipe (191), and the receiving shell (192) is slidably connected to the telescopic end of the hydraulic cylinder (12).
6. The open-close rake device of the travelling-rail grid cleaner according to claim 4, characterized in that: The left end of the traction line (197) is fixedly connected to an end ball, which is in contact with the oil storage box (190).
7. The device according to claim 4, characterized in that: The inner wall of the oil storage box (190) is fixedly connected to a guide post one (198), which is in contact with the traction line (197). The inner wall of the oil storage box (190) is fixedly connected to a guide post two (199), which is in contact with the traction line (197).