An intake trash rack cleaning system and an intake trash rack cleaning method

Abstract

The present invention relates to the technical field of intake trash rack cleaning, and specifically relates to an intake trash rack cleaning system and an intake trash rack cleaning method, which include a pier, a single rail, a single-rail cleaning machine, and a trash rack. A bent frame is installed at the top of the pier, and a single rail is installed at the bottom of the bent frame. The single-rail cleaning machine is arranged at the bottom of the single rail, and the trash rack is installed in the pier grid slot. The single-rail cleaning machine includes a traveling mechanism, a hoisting mechanism, and a hydraulic rake. The traveling mechanism is installed at the bottom of the single rail, and the hoisting mechanism is installed at the bottom of the traveling mechanism. For this intake trash rack cleaning system and intake trash rack cleaning method, by setting a guide grid and an eccentric hydraulic rake, the single-rail cleaning machine can be connected to the hydraulic rake or the trash rack tie rod respectively through a movable pulley block to complete trash cleaning or the opening and closing of the trash rack. The combined action of the eccentric hydraulic rake and the trash rack guide grid can solve the problem of the offset of the hanging point, thereby solving the problem of the single function of the opening and closing equipment in the intake single-rail trash rack cleaning system.

Description

Technical Field

[0001] The present invention relates to the technical field of intake trash rack and trash cleaning, and particularly to an intake trash rack and trash cleaning system and an intake trash rack and trash cleaning method. Background Art

[0002] In water conservancy and hydropower projects, in order to prevent dirt from bringing potential safety hazards and benefit losses to the project operation, a trash rack and trash cleaning system is generally set at the intake. The trash rack system mainly includes a trash rack and the opening and closing equipment of the trash rack, and the trash cleaning system is a trash cleaner and a dirt treatment system. In the existing intake design, generally, the hoisting equipment of the trash rack and the trash cleaner are set independently, or a mobile multi-functional trash cleaner with a double track is set to simultaneously realize the functions of trash cleaning and opening and closing the trash rack. However, this design has problems of large investment in hydraulic structures and large floor area. Especially for the trash rack system in the forebay of the intake, in order to reduce water flow loss, the water inlet area is generally enlarged, and a larger number of trash racks must be set. If designed according to the traditional method, the investment occupied by the equipment and hydraulic structures is very large.

[0003] In the existing single-track intake trash rack and trash cleaning system of water conservancy and hydropower projects, due to space limitations, and in the water flow direction, there is a certain distance between the hoisting center of the trash rack and the hoisting center of the trash cleaning bucket. The single-track structure can only adapt to one working condition and realize one function, that is, only a hoist dedicated to opening and closing the trash rack or only a trash cleaner for trash cleaning is set. This setting will cause problems that the trash rack cannot be opened and closed or the dirt cannot be cleaned. Summary of the Invention

[0004] The purpose of the present invention is to provide an intake trash rack and trash cleaning system and an intake trash rack and trash cleaning method to solve the problems raised in the above background art.

[0005] To achieve the above purpose, the present invention provides the following technical solution: An intake trash rack and trash cleaning system includes a pier, a single track, a single-track trash cleaner, and a trash rack. A dirt discharging platform is arranged on the plane of the pier, water flows inside the pier, a bent frame is installed on the top of the pier, the single track is installed on the front bottom of the bent frame, the single-track trash cleaner is arranged at the bottom of the single track, the trash rack is installed in the gate slot of the pier, and the opening and closing center of the trash rack is directly below the center of the single track.

[0006] The single-track trash cleaner includes a traveling mechanism, a hoisting mechanism, and a hydraulic bucket. The traveling mechanism is installed at the bottom of the single track, the hoisting mechanism is installed at the bottom of the traveling mechanism, and the hydraulic bucket can be placed on the surface of the dirt discharging platform.

[0007] The trash rack is composed of a guide rack, a trash rack surface, a trash rack tie rod, and a trash rack tie rod baffle. The guide rack is installed inside the pier. The trash rack surface is fixedly connected to the bottom of the guide rack. The trash rack tie rod is installed inside the guide rack. The trash rack tie rod baffle is fixedly connected to the back of the guide rack. There is a corner between the guide rack surface and the trash rack surface, forming a corner line.

[0008] Preferably, the hydraulic grab bucket includes a fixed grab, rolling travel wheels, a grab opening and closing mechanism, an opening and closing oil cylinder, a water seal joint, a movable grab, and a hanging point. The fixed grab is arranged on the downstream side of the hydraulic grab bucket. The rolling travel wheels are installed on the back of the hydraulic grab bucket. The grab opening and closing mechanism is installed inside the fixed grab. The opening and closing oil cylinder is installed on the outer wall of the fixed grab. The water seal joint is installed on the outer wall of the grab opening and closing mechanism. The movable grab is installed on the front of the grab opening and closing mechanism. The hanging point is fixedly connected to the top of the front of the fixed grab.

[0009] Preferably, the rolling travel wheels are composed of a front travel wheel, a middle travel wheel, and a rear travel wheel. The front travel wheel is located at the bottom of the rolling travel wheels. The middle travel wheel is located at the lower middle part of the back of the rolling travel wheels. The rear travel wheel is located at the top of the back of the rolling travel wheels.

[0010] Preferably, the outer walls of the guide rack and the trash rack surface are both slidably connected to the gate slot of the pier, and the outer walls of the guide rack and the trash rack surface are both in rolling contact with the outer walls of the rolling travel wheels. The hydraulic grab bucket can be lifted and lowered along the outer walls of the guide rack and the trash rack surface through the rolling travel wheels. The bottom end of the trash rack tie rod is rotatably connected to the inner wall of the guide rack, and the trash rack tie rod can rotate inside the guide rack. The contact outer wall between the guide rack and the trash rack surface is the corner line.

[0011] Preferably, a cantilever is installed at the bottom of the bent frame. A cable reel is installed inside the hoisting mechanism. A submersible cable is wound inside the cable reel. A side pressure type load sensor is installed below the hoisting mechanism. A steel wire rope is installed below the hoisting mechanism.

[0012] Preferably, the side pressure type load sensor is composed of a fixing bolt and a sensor body. The fixing bolt is installed on the outer wall of the side pressure type load sensor. The outer wall of the hoisting mechanism is wound with a steel wire rope. One end of the fixing bolt penetrates through the side pressure type load sensor and the steel wire rope and extends to the outside of the steel wire rope. The inner walls of the side pressure type load sensor and the steel wire rope penetrated by the fixing bolt are respectively adapted to the outer wall of the fixing bolt, and the side pressure type load sensor can be fixed through the fixing bolt.

[0013] Preferably, a movable pulley set is installed at the bottom of the steel wire rope. The movable pulley set is respectively adapted to the trash rack tie rod and the lifting point. When the movable pulley set is connected to the trash rack tie rod, the trash rack can be opened and closed. When the movable pulley set is connected to the lifting point, the hydraulic grab bucket can be lifted and lowered to realize the cleaning operation.

[0014] A method for cleaning trash at the water inlet includes the following steps:

[0015] S1: The operator installs the trash rack in the gate slot of the pier through the traveling mechanism, the hoisting mechanism and the movable pulley set, and then separates the movable pulley set from the trash rack tie rod, so that the trash rack tie rod abuts against the outer wall of the trash rack tie rod baffle under the action of its own gravity, thus avoiding affecting the operation of the hydraulic grab bucket.

[0016] S2: Connect the movable pulley set to the lifting point, lift the hydraulic grab bucket through the hoisting mechanism, and close the hydraulic grab bucket through the grab bucket opening and closing mechanism. Under the action of the eccentricity, the hydraulic grab bucket rotates counterclockwise and forms a suitable angle with the guide grid. Move the hydraulic grab bucket to a suitable position through the traveling mechanism, and then cooperate with the hoisting mechanism, the steel wire rope and the movable pulley set to lower the hydraulic grab bucket, and make the outer wall of the front traveling wheel abut against the outer wall of the guide grid, so as to guide the hydraulic grab bucket. When the hydraulic grab bucket is pulled by the rolling traveling wheel and moves to the corner line, open the hydraulic grab bucket through the grab bucket opening and closing mechanism. Under the action of the eccentric moment, the hydraulic grab bucket rotates clockwise and inclines towards the upstream surface of the water flow, so that the hydraulic grab bucket can smoothly cross the corner line. When the hydraulic grab bucket enters the water surface, it will cause the outer wall of the rolling traveling wheel to be in close contact with the trash rack grid surface under the impact of the water flow, and shovel the dirt into the hydraulic grab bucket.

[0017] S3: After the hydraulic grab bucket descends to a certain depth, the grab bucket opening and closing mechanism closes, so as to grab the garbage in front of the trash rack inside the hydraulic grab bucket, and lift and pull the hydraulic grab bucket through the hoisting mechanism, the movable pulley set and the steel wire rope. When the hydraulic grab bucket moves to the sewage discharge platform through the traveling mechanism, open the grab bucket. Under the action of the eccentric moment, the hydraulic grab bucket rotates clockwise around the lifting point, so that the sewage discharge angle is greater than 90°. At this time, the garbage inside the hydraulic grab bucket will pour onto the surface of the sewage discharge platform.

[0018] S4: The operator runs the dirt cleaning machine to the sewage discharge platform through the traveling mechanism, places and fixes the hydraulic rake on the sewage discharge platform, pulls out the submersible cable from the water seal joint on the rake opening and closing mechanism, fixes the submersible cable on the cable reel, disconnects the connection between the movable pulley and the lifting lug of the hydraulic rake, starts the traveling mechanism of the dirt cleaning machine, the dirt cleaning machine runs to the orifice where the trash rack needs to be opened and closed, aligns with the center of the trash rack to be lifted, starts the lifting mechanism of the dirt cleaning machine to lower the movable pulley block, rotates the trash rack tie rod from the bottom of the grid bars to the vertical state, inserts the shaft of the movable pulley block into the shaft hole on the trash rack tie rod, and the trash rack can be opened and closed after the connection is completed.

[0019] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0020] 1. For the intake trash cleaning system and the intake trash cleaning method, by setting the eccentric suspension points of the guide grid and the hydraulic rake, the movable pulley block can be respectively connected to the suspension point of the hydraulic rake and the trash rack tie rod. Therefore, through the cooperation between the lifting mechanism and the movable pulley block, the cleaning or the opening and closing of the trash rack can be completed, solving the problem in the single-rail intake trash cleaning system of existing water conservancy and hydropower projects that due to space limitations, and in the water flow direction, there is a certain distance between the lifting center of the trash rack and the lifting center of the cleaning rake, and the opening and closing equipment can only adapt to one working condition and realize one function.

[0021] 2. For the intake trash cleaning system and the intake trash cleaning method, by installing rolling wheels on the back of the fixed rake, when the hydraulic rake descends, the outer wall of the rolling wheels can contact the outer wall of the guide grid and the trash rack grid surface, thus avoiding sliding friction between the hydraulic rake and the trash rack, which may lead to a decrease in the service life of the trash rack and the hydraulic rake.

[0022] 3. For the intake trash cleaning system and the intake trash cleaning method, when discharging sewage, the rake is opened. Under the action of the eccentric moment, the hydraulic rake rotates clockwise around the suspension point, making the sewage discharge angle greater than 90°, which helps to completely discharge the dirt in the hydraulic rake. Description of the Drawings

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0024] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0025] Figure 2 It is a schematic diagram of the bent frame structure of the present invention;

[0026] Figure 3 Side schematic view of the overall structure of the present invention;

[0027] Figure 4 Schematic view of the hydraulic grab structure of the present invention;

[0028] Figure 5 Schematic view of the trash rack structure of the present invention;

[0029] Figure 6 Schematic view of the side-pressure load cell structure of the present invention;

[0030] Figure 7 Schematic view of the opening and closing of the trash rack structure of the present invention;

[0031] Figure 8 Schematic view of the closed-grab walking of the cleaning machine of the present invention;

[0032] Figure 9 Schematic view of the cleaning grab contacting the guide grid of the present invention;

[0033] Figure 10 Schematic view of the closed grab at the corner line of the present invention;

[0034] Figure 11 Schematic view of the open grab at the corner line of the present invention;

[0035] Figure 12 Schematic view of the hydraulic grab descending to scoop up dirt of the present invention;

[0036] Figure 13 Schematic view of the closed grab lifting of the present invention;

[0037] Figure 14 Schematic view of the open grab discharging dirt of the present invention.

[0038] In the figure: 1, pier; 2, bent frame; 201, cantilever; 3, single track; 4, traveling mechanism; 5, hoisting mechanism; 6, cable reel; 7, submersible cable; 8, side-pressure load cell; 801, fixing bolt; 802, steel wire rope; 9, hydraulic grab; 901, fixed grab; 902, rolling wheel; 903, grab opening and closing mechanism; 904, opening and closing oil cylinder; 905, water seal joint; 906, moving grab; 907, hanging point; 10, trash rack; 1001, guide grid; 1002, trash rack grid surface; 1003, trash rack tie rod; 1004, trash rack tie rod baffle; 11, movable pulley block. Detailed implementation manners

[0039] Next, in combination with the embodiments of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0040] In the present invention, unless otherwise clearly defined and limited, terms such as "installation", "connection", "connection", "fixation" and the like shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0041] As Figures 1-14 shown, the present invention provides a technical solution: an intake trash cleaning system, including a pier 1, a single track 3, a single-rail trash cleaner, and a trash rack 10. A sewage discharge platform is provided on the surface of the pier 1, water flows inside the pier 1, a bent frame 2 is installed on the top of the pier 1, a cantilever 201 is installed at the bottom of the bent frame 2, the single track 3 is installed on the front bottom of the bent frame 2, the single-rail trash cleaner is arranged at the bottom of the single track 3, the single-rail trash cleaner includes a traveling mechanism 4, a hoisting mechanism 5, and a hydraulic grab 9. The traveling mechanism 4 is installed at the bottom of the single track 3, the hoisting mechanism 5 is installed at the bottom of the traveling mechanism 4, a cable reel 6 is installed inside the hoisting mechanism 5, a submersible cable 7 is wound inside the cable reel 6, a side-pressure load sensor 8 is installed below the hoisting mechanism 5, and the side-pressure load sensor 8 is composed of a fixing bolt 801 and a sensor body. The fixing bolt 801 is installed on the outer wall of the side-pressure load sensor 8, a steel wire rope 802 is wound around the outer wall of the hoisting mechanism 5, one end of the fixing bolt 801 penetrates through the side-pressure load sensor 8 and the steel wire rope 802 and extends to the outside of the steel wire rope 802. The outer wall of the fixing bolt 801 is adapted to the inner wall of the side-pressure load sensor 8 penetrated and the inner wall of the steel wire rope 802 penetrated, and the side-pressure load sensor 8 can be fixed by the fixing bolt 801. The hydraulic grab 9 is placed on the surface of the sewage discharge platform, the trash rack 10 is installed inside the pier 1, a movable pulley group 11 is installed at the bottom of the steel wire rope 802, and the movable pulley group 11 is respectively adapted to a trash rack tie rod 1003 and a hanging point 907. When the movable pulley group 11 is connected to the trash rack tie rod 1003, the trash rack 10 can be opened and closed. When the movable pulley group 11 is connected to the hanging point 907, the hydraulic grab 9 can be tractionally lifted.

[0042] The hydraulic scraper 9 includes a fixed scraper 901, rolling wheels 902, a scraper opening and closing mechanism 903, an opening and closing oil cylinder 904, a water seal joint 905, a movable scraper 906, and a lifting point 907. The fixed scraper 901 is arranged on the outer wall of the hydraulic scraper 9. The rolling wheels 902 are installed on the back of the hydraulic scraper 9. The rolling wheels 902 are composed of a front traveling wheel, a middle traveling wheel, and a rear traveling wheel. The front traveling wheel is located at the bottom of the rolling wheels 902. The middle traveling wheel is located at the lower middle part of the back of the rolling wheels 902. The rear traveling wheel is located at the top of the back of the rolling wheels 902. The scraper opening and closing mechanism 903 is installed inside the fixed scraper 901. The opening and closing oil cylinder 904 is installed on the outer wall of the fixed scraper 901. The water seal joint 905 is installed on the outer wall of the scraper opening and closing mechanism 903. The movable scraper 906 is installed on the front of the scraper opening and closing mechanism 903. The lifting point 907 is fixedly connected to the top of the front of the fixed scraper 901.

[0043] The trash rack 10 is composed of a guide rack 1001, a trash rack surface 1002, trash rack tie rods 1003, and trash rack tie rod baffles 1004. The guide rack 1001 is installed inside the pier 1. The trash rack surface 1002 is fixedly connected to the bottom of the guide rack 1001. The outer walls of the guide rack 1001 and the trash rack surface 1002 are both slidably connected to the inner wall of the pier 1. The outer contact point between the guide rack 1001 and the trash rack surface 1002 is the corner line. The outer walls of the guide rack 1001 and the trash rack surface 1002 are both rollingly connected to the outer walls of the rolling wheels 902. The hydraulic scraper 9 can move on the outer walls of the guide rack 1001 and the trash rack surface 1002 through the rolling wheels 902. The trash rack tie rods 1003 are installed inside the guide rack 1001. The bottom end of the trash rack tie rods 1003 is rotatably connected to the inner wall of the guide rack 1001. The trash rack tie rods 1003 can rotate inside the guide rack 1001. The trash rack tie rod baffles 1004 are fixedly connected to the back of the guide rack 1001. When opening and closing the trash rack 10, it is a vertical opening and closing. When cleaning the dirt, there is a diagonal pull of less than 10°.

[0044] By setting up the movable pulley block 11, the movable pulley block 11 can be respectively connected to the lifting point 907 and the trash rack tie rods 1003. Therefore, through the cooperation between the hoisting mechanism 5 and the movable pulley block 11, the lifting of the hydraulic scraper 9 or the opening and closing of the trash rack 10 can be completed, solving the problem in the existing single-rail intake trash rack cleaning system with a bent frame 2 that due to space limitations, and in the water flow direction, there is a certain distance between the lifting center of the trash rack 10 and the lifting center of the cleaning scraper, and the single-rail structure can only adapt to one working condition and realize one function.

[0045] By installing rolling wheels 902 on the back of the fixed rake 901, when the hydraulic rake bucket 9 descends, the outer wall of the rolling wheel 902 can contact the outer wall of the guide grid 1001 and the trash rack surface 1002, thus avoiding sliding friction between the hydraulic rake bucket 9 and the trash rack 10 and reducing the service life of the trash rack 10 and the hydraulic rake bucket 9.

[0046] When discharging the dirt, the rake is opened. Under the action of the eccentric moment, the hydraulic rake bucket 9 rotates clockwise around the suspension point 907, making the dirt discharge angle greater than 90°, which helps to completely discharge the dirt in the hydraulic rake bucket 9.

[0047] The suspension point distance of the rake bucket is the same as that of the hoisting mechanism 5, and the lifting lugs are adapted to the movable pulley block 11.

[0048] In the water flow direction, the position of the center of gravity of the closed rake bucket in the vertical state can be calculated by formula (1).

[0049]

[0050] Where:

[0051] X - The distance from the center of gravity of the closed rake bucket in the vertical state to the walking surface of the rake bucket.

[0052] Gj - The weight of the fixed parts such as the fixed rake 901 of the rake bucket.

[0053] X1 - The distance from the center of gravity of the fixed parts such as the fixed rake 901 of the closed rake bucket in the vertical state to the walking surface of the rake bucket.

[0054] Gd - The weight of the movable parts such as the movable rake 906 of the rake bucket.

[0055] X2 - The distance from the center of gravity of the rotating parts such as the movable rake 906 of the closed rake bucket in the vertical state to the walking surface of the rake bucket.

[0056] In the water flow direction, the position of the center of gravity of the fully opened rake bucket in the vertical state can be calculated by formula (2).

[0057]

[0058] Where:

[0059] Xk - The distance from the center of gravity of the fully opened rake bucket in the vertical state to the walking surface of the rake bucket;

[0060] Gj, X1, Gd - The same as formula (1);

[0061] X2 ’ - The distance from the center of gravity of the rotating parts such as the movable rake 906 of the fully opened rake bucket in the vertical state to the walking surface of the rake bucket.

[0062] When the dragline suspension point 907 is between X and Xk, there is an eccentricity between the dragline suspension point 907 and the center of gravity line. When the dragline is closed, the center of gravity of the dragline is downstream of the lifting center, and the eccentricity is e1. When the dragline is opened, the center of gravity of the dragline is upstream of the lifting center, and the eccentricity is e2. After the dragline is lifted by the hoisting mechanism 5, eccentric moments Ge1 and Ge2 are generated respectively. When the dragline is lifted in the free state, under the action of the eccentric force moment, the dragline will rotate counterclockwise or clockwise. Using this principle and combined with the action of the guide grating 1001, the offset problem of the suspension point 907 with different functions of the single-rail multi-functional trash cleaner can be solved, so as to realize multiple functions of trash cleaning and opening and closing the trash rack 10.

[0063] A method for cleaning the trash rack at the water inlet includes the following steps:

[0064] S1: The operator installs the trash rack 10 in the gate slot of the pier 1 through the traveling mechanism 4, the hoisting mechanism 5 and the movable pulley block 11, and then separates the movable pulley block 11 from the trash rack pull rod 1003, so that the trash rack pull rod 1003 abuts against the outer wall of the trash rack pull rod baffle 1004 under its own gravity, thus avoiding affecting the operation of the hydraulic dragline 9.

[0065] S2: Connect the movable pulley block 11 with the suspension point 907, lift the hydraulic dragline 9 through the hoisting mechanism 5, and close the hydraulic dragline 9 through the dragline opening and closing mechanism 903. Under the action of the eccentricity, the hydraulic dragline 9 rotates counterclockwise and forms a suitable angle with the guide grating 1001. Move the hydraulic dragline 9 to a suitable position through the traveling mechanism 4, and then cooperate with the hoisting mechanism 5, the steel wire rope 802 and the movable pulley block 11 to lower the hydraulic dragline 9, and make the outer wall of the front traveling wheel abut against the outer wall of the guide grating 1001, so as to guide the hydraulic dragline 9. When the hydraulic dragline 9 is pulled by the rolling wheel 902 and moves to the corner line, open the hydraulic dragline 9 through the dragline opening and closing mechanism 903. Under the action of the eccentric force moment, the hydraulic dragline 9 rotates clockwise and inclines towards the upstream surface of the water flow, so that the hydraulic dragline 9 can successfully cross the corner line. When the hydraulic dragline 9 enters the water surface, under the impact force of the water flow, the outer wall of the rolling wheel 902 will be in close contact with the trash rack grid surface 1002, and the dirt will be shoveled into the hydraulic dragline 9.

[0066] S3: After the hydraulic dragline 9 descends to a certain depth, the dragline opening and closing mechanism 903 is closed, so as to grab the garbage in front of the trash rack 10 inside the hydraulic dragline 9, and lift and tow the hydraulic dragline 9 through the hoisting mechanism 5, the movable pulley block 11 and the steel wire rope 802. When the hydraulic dragline 9 moves to the sewage discharge platform through the traveling mechanism 4, open the dragline. Under the action of the eccentric force moment, the hydraulic dragline 9 rotates clockwise around the suspension point 907, so that the sewage discharge angle is greater than 90°. At this time, the garbage inside the hydraulic dragline 9 will pour on the surface of the sewage discharge platform.

[0067] S4: The operator runs the sewage cleaning machine to the sewage discharge platform through the traveling mechanism 4, places and fixes the hydraulic grab bucket 9 on the sewage discharge platform, pulls out the submersible cable 7 from the water-sealed joint 905 of the grab bucket opening and closing mechanism 903, fixes the submersible cable 7 on the cable reel 6, disconnects the connection between the movable pulley block 11 and the lifting lug 907 of the hydraulic grab bucket 9, starts the traveling mechanism 4 of the sewage cleaning machine, the sewage cleaning machine runs to the orifice where the trash rack 10 needs to be opened and closed, aligns with the center of the trash rack 10 to be lifted, starts the lifting mechanism 5 to lower the movable pulley block 11, rotates the trash rack tie rod 1003 from the bottom to the vertical state, inserts the shaft of the movable pulley block 11 into the shaft hole on the trash rack tie rod 1003, and after completing the connection, the trash rack 10 can be opened and closed.

[0068] During use, move the dirt cleaning machine to the dirt discharging platform, place and fix the hydraulic grab 9 on the dirt discharging platform, disconnect the connection between the movable pulley and the lifting lug of the hydraulic grab 9, and at the same time pull out the submersible cable 7 from the water seal joint 905 on the grab opening and closing mechanism 903, and fix the submersible cable 7 on the cable reel 6. Start the traveling mechanism 4, and the dirt cleaning machine runs to the orifice where the trash rack needs to be lifted, aligns with the center of the trash rack 10 to be lifted, starts the lifting mechanism 5 to lower the movable pulley block 11, rotates the trash rack tie rod 1003 from the bottom of the rack bars to the vertical state, and passes the shaft of the movable pulley block 11 through the shaft hole on the trash rack tie rod 1003. After the connection is completed, the trash rack 10 can be lifted; move the dirt cleaning machine to the dirt discharging platform, connect the movable pulley to the lifting lug of the hydraulic grab 9, and at the same time insert the submersible cable 7 into the water seal joint of the hydraulic grab 9, and rotate the lifting lug of the trash rack tie rod 1003 to the bottom of the rack bars to prevent it from affecting the dirt cleaning operation of the hydraulic grab 9. Close the hydraulic grab 9. Under the action of the eccentric moment, the hydraulic grab 9 rotates counterclockwise around the suspension point 907, making it in an inclined state, approaching parallel to the grid surface of the guide grid 1001; start the traveling mechanism 4 and run to the position where dirt cleaning is required, start the lifting mechanism 5 to lower the hydraulic grab 9. Since the hydraulic grab 9 is in an inclined state in the closed grab state, and the front walking wheels are provided at the front end of the hydraulic grab 9, the front walking wheels come into contact with the guide grid 1001 first, which can prevent the grab from inserting into the trash rack 10; the hydraulic grab 9 descends to the corner line at the corner of the guide grid 1001 and the trash rack 10, opens the hydraulic grab 9, and under the action of the eccentric moment, the hydraulic grab 9 rotates clockwise with the front walking wheels as the center; after the hydraulic grab 9 opens and descends beyond the corner line and enters the water surface, under the action of the water flow, the impact force of the water flow makes the hydraulic grab 9 press tightly against the trash rack 10, and rely on the front, middle and rear walking wheels to descend along the trash rack 10 for shoveling dirt, and press the dirt under the movable rake 906; when the grab descends to an appropriate height and is filled with dirt, start the opening and closing mechanism to close the grab. After the grab is closed, it is lifted with the grabbed dirt. Below the corner line, the hydraulic grab 9 is pressed tightly against the trash rack 10 and lifted by the impact force of the water flow. At the corner, since the rear walking wheels are at the uppermost end of the hydraulic grab 9 and the middle walking wheels are provided in the middle, there will be no sliding friction with the trash rack 10 during the lifting process, which can play a role in protecting the trash rack 10 and the fixed rake 901 of the grab; continue to lift the grab and the dirt in the grab to make it leave the trash rack 10, start the traveling mechanism 4 and run to the dirt discharging platform, open the hydraulic grab 9, unload the dirt. After opening the grab, under the action of the eccentric moment, the hydraulic grab 9 rotates clockwise around the suspension point 907, making the dirt discharging angle greater than 90°, which helps to completely unload the dirt in the hydraulic grab 9; since there is a certain distance between the lifting center of the grab and the lifting center of the lifting mechanism during dirt cleaning, and there is a certain oblique pull in the water flow direction during the lifting process of the grab, the side pressure sensor installed on the wire rope 802 can be used to limit the lifting force during dirt cleaning to protect the operation safety.

[0069] It should be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprising", "including" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising an..." does not exclude the presence of additional identical elements in the process, method, article or device comprising the element.

[0070] Although the embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A water inlet trash rack and cleaning system, comprising a pier (1), a single track (3), a single-rail trash cleaner and a trash rack (10), characterized in that: The plane of the pier (1) is provided with a sewage discharge platform. Water flows inside the pier (1). A bent frame (2) is installed at the top of the pier (1). The single track (3) is installed on the front of the bottom of the bent frame (2). The single-track trash cleaner is arranged at the bottom of the single track (3). The trash rack (10) is installed inside the pier (1). The opening and closing center of the trash rack (10) is directly below the center of the single track (3). The single-track trash cleaner includes a traveling mechanism (4), a hoisting mechanism (5) and a hydraulic rake bucket (9). The traveling mechanism (4) is installed at the bottom of the single track (3). The hoisting mechanism (5) is installed at the bottom of the traveling mechanism (4). The hydraulic rake bucket (9) can be placed on the surface of the sewage discharge platform. The trash rack (10) consists of a guide rack (1001), a trash rack grid surface (1002), a trash rack tie rod (1003) and a trash rack tie rod baffle (1004). The guide rack (1001) is installed inside the pier (1). The trash rack grid surface (1002) is fixedly connected to the bottom of the guide rack (1001). The trash rack tie rod (1003) is installed inside the guide rack (1001). The trash rack tie rod baffle (1004) is fixedly connected to the back of the guide rack (1001). There is a corner between the grid surface of the guide rack (1001) and the trash rack grid surface (1002), forming a corner line. The hydraulic rake bucket (9) includes a fixed rake (901), rolling wheels (902), a rake bucket opening and closing mechanism (903), an opening and closing oil cylinder (904), a water seal joint (905), a movable rake (906) and a lifting point (907). The fixed rake (901) is arranged on the downstream side of the hydraulic rake bucket (9). The rolling wheels (902) are installed on the back of the hydraulic rake bucket (9). The rake bucket opening and closing mechanism (903) is installed inside the fixed rake (901). The opening and closing oil cylinder (904) is installed on the outer wall of the fixed rake (901). The water seal joint (905) is installed on the outer wall of the rake bucket opening and closing mechanism (903). The movable rake (906) is installed on the front of the rake bucket opening and closing mechanism (903). The lifting point (907) is fixedly connected to the top of the front of the fixed rake (901).

2. The intake trash rack and cleaning system according to claim 1, characterized in that: The rolling wheels (902) are composed of a front traveling wheel, a middle traveling wheel and a rear traveling wheel. The front traveling wheel is located at the bottom of the rolling wheels (902). The middle traveling wheel is located at the lower middle part of the back of the rolling wheels (902). The rear traveling wheel is located at the top of the back of the rolling wheels (902).

3. The intake trash rack and cleaning system according to claim 2, wherein: The outer walls of the guide rack (1001) and the trash rack grid surface (1002) are both slidably connected to the inner wall of the pier (1). The outer walls of the guide rack (1001) and the trash rack grid surface (1002) are both rollingly connected to the outer walls of the rolling wheels (902). The bottom end of the trash rack tie rod (1003) is rotatably connected to the inner wall of the guide rack (1001). The contact outer wall between the guide rack (1001) and the trash rack grid surface (1002) is the corner line.

4. The intake trash rack and cleaning system according to claim 3, characterized in that: A cantilever (201) is installed at the bottom of the rack (2). A cable reel (6) is installed inside the hoisting mechanism (5). A submersible cable (7) is wound inside the cable reel (6). A side-pressure load sensor (8) is installed below the hoisting mechanism (5). A steel wire rope (802) is installed below the hoisting mechanism (5).

5. The intake trash rack and cleaning system according to claim 4, wherein: The side-pressure load sensor (8) consists of a fixing bolt (801) and a load sensor body. The fixing bolt (801) is installed on the outer wall of the side-pressure load sensor (8). The steel wire rope (802) is wound around the outer wall of the hoisting mechanism (5). One end of the fixing bolt (801) penetrates through the side-pressure load sensor (8) and the steel wire rope (802) and extends to the outside of the steel wire rope (802). The outer wall of the fixing bolt (801) is adapted to the inner wall of the side-pressure load sensor (8) that is penetrated and the inner wall of the steel wire rope (802) that is penetrated respectively.

6. The intake trash rack and cleaning system according to claim 5, wherein: A movable pulley block (11) is installed at the bottom of the steel wire rope (802). The movable pulley block (11) is respectively adapted to the trash rack pull rod (1003) and the hanging point (907).

7. A method for intercepting and cleaning dirt at the water inlet, which is applied to the water inlet dirt interception and cleaning system according to any one of claims 1-6, characterized in that, It includes the following steps: S1: The operator installs the trash rack (10) in the gate slot of the pier (1) through the traveling mechanism (4), the hoisting mechanism (5) and the movable pulley block (11). Subsequently, the movable pulley block (11) is separated from the trash rack pull rod (1003), so that the trash rack pull rod (1003) abuts against the outer wall of the trash rack pull rod baffle (1004) under the action of its own gravity, thereby avoiding affecting the operation of the hydraulic rake bucket (9). S2: Connect the movable pulley block (11) with the hanging point (907), hoist the hydraulic rake bucket (9) through the hoisting mechanism (5), and close the hydraulic rake bucket (9) through the rake bucket opening and closing mechanism (903). Under the action of the eccentricity, the hydraulic rake bucket (9) rotates counterclockwise and forms an appropriate angle with the guide grid (1001). Move the hydraulic rake bucket (9) to an appropriate position through the traveling mechanism (4). Subsequently, through the cooperation of the hoisting mechanism (5), the steel wire rope (802) and the movable pulley block (11), the hydraulic rake bucket (9) descends, and the outer wall of the front traveling wheel abuts against the outer wall of the guide grid (1001), thereby guiding the hydraulic rake bucket (9). When the hydraulic rake bucket (9) is pulled by the rolling wheel (902) and moves to the corner line, and the hydraulic rake bucket (9) is opened through the rake bucket opening and closing mechanism (903). Under the action of the eccentric moment, the hydraulic rake bucket (9) rotates clockwise and inclines towards the upstream surface of the water flow, so that the hydraulic rake bucket (9) can smoothly cross the corner line. When the hydraulic rake bucket (9) enters the water surface, it will cause the outer wall of the rolling wheel (902) to be in close contact with the trash rack grid surface (1002) under the impact force of the water flow, and shovel the dirt into the hydraulic rake bucket (9). S3: After the hydraulic grab bucket (9) descends to a certain depth, the hydraulic grab bucket (9) closes, thereby grasping the garbage in front of the trash rack (10) inside the hydraulic grab bucket (9), and the hydraulic grab bucket (9) is pulled upward through the hoisting mechanism (5), the movable pulley block (11) and the steel wire rope (802). When the hydraulic grab bucket (9) moves to the sewage discharge platform through the traveling mechanism (4), the grab bucket is opened. Under the action of the eccentric moment, the hydraulic grab bucket (9) rotates clockwise around the suspension point (907), so that the sewage discharge angle is greater than 90°. At this time, the garbage inside the hydraulic grab bucket (9) will pour onto the surface of the sewage discharge platform; S4: The operator runs the sewage cleaning machine to the sewage discharge platform through the traveling mechanism (4), places and fixes the hydraulic grab bucket (9) on the sewage discharge platform, pulls out the submersible cable (7) from the water seal joint (905) of the grab bucket opening and closing mechanism (903), fixes the submersible cable (7) on the cable reel (6), then disconnects the connection between the movable pulley block (11) and the suspension point (907) of the lifting lug of the hydraulic grab bucket (9), starts the traveling mechanism (4) of the sewage cleaning machine, the sewage cleaning machine runs to the orifice where the trash rack (10) needs to be opened and closed, aligns with the center of the trash rack (10) to be lifted, starts the hoisting mechanism (5) to lower the movable pulley block (11) group, rotates the trash rack tie rod (1003) from the bottom to the vertical state, and passes the shaft of the movable pulley block (11) through the shaft hole on the trash rack tie rod (1003). After the connection is completed, the trash rack (10) can be opened and closed.

Images