Grille machine

Abstract

The utility model discloses a grillage machine, which relates to the technical field of water conservancy and comprises a rack used for being connected to a drainage channel. The rake tooth assembly is arranged on the rack, the rake tooth assembly is inclined from back to front, and the lower end of the rake tooth assembly extends into the drainage channel; the grid assembly is configured to be connected to the inner side wall of the drainage channel in a lifting mode, the grid assembly inclines from back to front, and the grid assembly can be immersed in a water body in the drainage channel and is staggered with the rake tooth assembly, so that the grid assembly can intercept suspended garbage in the water body in the drainage channel; suspended garbage in water in the drainage channel can be fished up by the rake tooth assembly; and the lifting driving assembly is arranged on the rack, and the lifting driving assembly can drive the grating assembly to ascend so that the grating assembly can be pumped out of the water body in the drainage channel. The grille assembly can move to the position above the water body, the situation that the grille assembly is damaged due to impact of the water body is effectively avoided, and then the service life of the grillage machine is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of water conservancy technology, and in particular to a bar screen machine. Background Technology

[0002] In water conservancy projects, to cope with urban flooding under extreme conditions, forced-draft pumping stations are typically added to the ends of drainage ditches and other water conservancy facilities. To ensure that the pump inlets of these stations are not clogged by impurities, a bar screen is installed upstream of the pumps to remove suspended debris from the water. When the sea level is higher than the water level at the end of the drainage ditches, the water in the ditches cannot be discharged to the open sea by gravity. In this case, the gates must be closed and the pumps and bar screens must be turned on, allowing the pumps to pump the water from the ditches to the open sea. During pump operation, the bar screen effectively removes suspended debris from the water, ensuring the pumps can operate normally for extended periods.

[0003] When the sea level is lower than the water level at the end of the drainage channel, the gate remains open while the pumps and bar screen are shut off. At this point, the water in the drainage channel can be discharged into the open sea by gravity. However, the bar screen components in the bar screen can obstruct water flow in the drainage channel, hindering safe flood discharge. Furthermore, due to the high flow velocity of the water in the drainage channel, the bar screen components are easily damaged by the water's impact, thus reducing the bar screen's lifespan. Utility Model Content

[0004] The present invention aims to at least solve one of the technical problems existing in the prior art. To this end, the present invention proposes a bar screen machine that can improve the service life of the bar screen machine.

[0005] The bar screen machine according to an embodiment of the present invention includes a frame, a rake tooth assembly, a bar screen assembly, and a lifting drive assembly.

[0006] The frame is used to connect to the drainage ditch; the rake tooth assembly is mounted on the frame, the rake tooth assembly is inclined from back to front, and the lower end of the rake tooth assembly extends into the drainage ditch; the bar screen assembly is configured to be vertically connected to the inner wall of the drainage ditch, the bar screen assembly is inclined from back to front, the bar screen assembly can be submerged in the water in the drainage ditch and is staggered with the rake tooth assembly, so that the bar screen assembly can intercept suspended debris in the water in the drainage ditch and the rake tooth assembly can scoop up suspended debris in the water in the drainage ditch; the lifting drive assembly is mounted on the frame, the lifting drive assembly can drive the bar screen assembly to rise, so that the bar screen assembly is extracted from the water in the drainage ditch.

[0007] It has at least the following beneficial effects:

[0008] When the sea level is lower than the water level at the end of the drainage ditch, the lifting drive assembly raises the bar screen assembly, allowing it to be extracted from the water and positioned above the water. Once above the water, the flowing water in the drainage ditch can no longer impact the bar screen, effectively preventing damage and extending its lifespan. Furthermore, the bar screen assembly allows the water to flow smoothly to the open sea, ensuring the drainage ditch's flood control safety. When the sea level is higher than the water level at the end of the drainage ditch, the gate closes and the pump starts. The lifting drive assembly lowers the bar screen assembly, submerging it in the water and allowing it to be staggered with the rake tooth assembly. Under the interception effect of the bar screen assembly, suspended debris in the water can be intercepted on the bar screen assembly, and under the action of the rake tooth assembly, the suspended debris intercepted on the bar screen assembly can be picked up by the rake tooth assembly, so as to achieve the purpose of removing debris from the water and ensuring that the water pump can operate normally for a long time.

[0009] According to an embodiment of the present invention, the lifting drive assembly of the bar screen includes a rotary drive component, a winch, and a cable. The rotary drive component is mounted on the frame, and its output end is connected to the winch. One end of the cable is connected to the winch, and the other end of the cable is connected to the bar screen assembly. The rotary drive component is used to drive the winch to rotate so that the cable can be wound around the winch and pull the bar screen assembly upward.

[0010] According to an embodiment of the present invention, the lifting drive assembly of the bar screen includes a connecting rod, two winches, and two cables. The two winches are rotatably connected to the frame and connected to each other by the connecting rod. One end of each cable is connected to the two winches, and the other end of each cable is connected to the left and right sides of the bar screen assembly. The rotation drive is used to drive the connecting rod to rotate so that the two cables can be wound around the two winches and pull the bar screen assembly upward.

[0011] According to an embodiment of the present invention, the lifting drive assembly of the bar screen machine further includes a fixed pulley, which is rotatably connected to the frame, and the cable is wound around the fixed pulley.

[0012] According to the grating machine of this utility model embodiment, a limiting ring groove is formed on the outer wall of the fixed pulley, and the limiting ring groove is used for the cable to extend into.

[0013] The bar screen machine according to an embodiment of the present utility model further includes a guide assembly, which is parallel to the vertical direction and is disposed on the inner wall of the drainage ditch. The bar screen assembly is slidably connected to the inner wall of the drainage ditch in the vertical direction.

[0014] According to an embodiment of the present invention, the bar screen machine includes two first guide members and two second guide members. The two first guide members and the two second guide members are parallel to the vertical direction. The two first guide members are respectively disposed on the left and right inner sidewalls of the drainage ditch, and the two second guide members are respectively disposed on the left and right inner sidewalls of the drainage ditch. The two first guide members are respectively disposed in front of the two second guide members. Each of the two first guide members has a first sliding groove, and each of the two second guide members has a second sliding groove. The first sliding groove and the second sliding groove are parallel to the vertical direction. The left and right sides of the upper end of the bar screen assembly are slidably disposed in the two first sliding grooves, and the left and right sides of the lower end of the bar screen assembly are slidably disposed in the two second sliding grooves.

[0015] According to the bar screen machine of this utility model embodiment, the guide assembly further includes two first rollers and two second rollers. The two first rollers are respectively disposed on the left and right sides of the upper end of the bar screen assembly, and the two second rollers are respectively disposed on the left and right sides of the lower end of the bar screen assembly. The two first rollers are respectively disposed in the two first sliding grooves, and the two second rollers are respectively disposed in the two second sliding grooves.

[0016] The bar screen machine according to the present utility model embodiment further includes two barbed limiters and two barbed limiters. The two barbed limiters are respectively disposed in the two first sliding grooves, and the two barbed limiters are respectively disposed on the left and right sides of the upper end of the bar screen assembly. The two barbed limiters can abut against the two barbed limiters respectively to restrict the bar screen assembly from moving forward and upward.

[0017] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0019] Figure 1 This is a side view of the bar screen machine and drainage ditch according to an embodiment of the present utility model;

[0020] Figure 2 This is a side view of the bar screen assembly after it has been raised in an embodiment of the present invention.

[0021] Figure 3 This is a partial schematic diagram of the bar screen machine according to an embodiment of the present utility model;

[0022] Figure 4 This is a top view of the bar screen assembly, guide assembly, and drainage channel in the bar screen machine of this utility model embodiment;

[0023] Figure 5 This is a schematic diagram of the barb limiting component and the hook limiting component in the bar screen machine according to an embodiment of this utility model;

[0024] Figure 6 This is a schematic diagram showing another state of the barb limiting component and the hook limiting component in the barbed screen machine according to an embodiment of this utility model;

[0025] Figure 7 This is a schematic diagram showing the staggered arrangement of the bar screen assembly and the rake tooth assembly in an embodiment of the present utility model.

[0026] Figure label:

[0027] Rake tooth assembly 100; mounting rod 110; rake teeth 111;

[0028] Grid assembly 200; slag baffle 210; first roller 220; second roller 230; barbed limiter 240;

[0029] Lifting drive assembly 300; Rotary drive component 310; Winch 320; Cable 330; Fixed pulley 340; Connecting rod 350;

[0030] Guide assembly 400; first guide member 410; first slide groove 411; second guide member 420; second slide groove 421; barb limiting member 430;

[0031] 500 racks;

[0032] Drainage ditch 10. Detailed Implementation

[0033] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0034] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0035] In the description of this utility model, "multiple" refers to two or more. The use of "first" and "second" is for distinguishing technical features only and should not be construed as indicating or implying relative importance, or implicitly indicating the number of technical features or their sequential relationship.

[0036] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0037] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

[0038] refer to Figure 1 and Figure 2 The bar screen machine of this utility model embodiment includes a frame 500, a rake tooth assembly 100, a bar screen assembly 200, and a lifting drive assembly 300.

[0039] A frame 500 is connected to a drainage ditch 10. A rake tooth assembly 111 100 is mounted on the frame 500, tilting from rear to front, with its lower end extending into the drainage ditch 10. A screen assembly 200 is configured to be vertically connected to the inner wall of the drainage ditch 10, tilting from rear to front. The screen assembly 200 is submerged in the water within the drainage ditch 10 and is staggered with the rake tooth assembly 111 100, allowing it to intercept suspended debris in the water and to scoop up suspended debris from the water within the drainage ditch 10. A lifting drive assembly 300 is mounted on the frame 500 and drives the screen assembly 200 upwards, thereby extracting it from the water within the drainage ditch 10.

[0040] In this embodiment of the invention, the frame 500 of the bar screen is connected to the left and right walls of the drainage ditch 10. The rake tooth assembly 111 100 is inclined, with its lower end extending into the drainage ditch 10 and submerged in the water. The upper end of the rake tooth assembly 111 100 is tilted forward. The bar screen assembly 200 is configured to be vertically connected to the left and right inner walls of the drainage ditch 10. The bar screen assembly 200 can be lowered and submerged in the water of the drainage ditch 10, allowing it to engage with the lower end of the rake tooth assembly 111 100. This staggered arrangement allows the bar screen assembly 200 to intercept suspended debris in the water, while the rake tooth assembly 111 100 removes suspended debris from the water in the drainage ditch 10. A lifting drive assembly 300 is mounted on the frame 500. The output end of the lifting drive assembly is connected to the bar screen assembly 200, enabling the lifting drive assembly 300 to drive the bar screen assembly 200 to rise or fall. When the lifting drive assembly 300 drives the bar screen assembly 200 to rise, the bar screen assembly 200 can be extracted from the water in the drainage ditch 10, allowing it to move above the water in the drainage ditch 10. At this point, the bar screen assembly 200 can no longer intercept suspended debris in the water, and the water in the drainage ditch 10 can no longer impact the bar screen assembly 200. When the lifting drive assembly 300 drives the bar screen assembly 200 to fall, the bar screen assembly 200 can descend and be submerged in the water. After descending to its lower limit, the bar screen assembly 200 can be staggered with the rake teeth assembly 111 100, at which point the bar screen assembly 200 can intercept suspended debris in the water.

[0041] In this embodiment of the invention, the bar screen further includes a rotary drive assembly and a waste collection assembly. The rotary drive assembly drives the rake teeth 111 assembly 100 to rotate, enabling the rake teeth 111 assembly 100 to collect suspended waste in the water. (Reference) Figure 1 and Figure 7 The rake tooth 111 assembly 100 includes two chains and multiple mounting rods 110. Both chains are rotatably connected to the frame 500. The left and right ends of each mounting rod 110 are connected to the two chains respectively. Multiple rake teeth 111 are evenly distributed along the left-right direction on each mounting rod 110. A rotary drive assembly is used to drive the two chains to rotate, allowing the mounting rods 110 to rotate on the frame 500 and enabling the multiple rake teeth 111 on the mounting rods 110 to sequentially scoop up suspended debris in the water. A debris collection assembly is used to collect suspended debris that falls from the rake teeth 111. In this embodiment of the invention, the grid assembly 200 is inclined, and the inclination angle of the grid assembly 200 is consistent with the inclination angle of the rake tooth 111 assembly 100. (Reference) Figure 1 and Figure 7The grid assembly 200 includes a crossbar (not shown in the figure) and multiple slag-blocking grid bars 210 evenly distributed in the left-right direction. The crossbar is parallel to the left-right direction, and the multiple slag-blocking grid bars 210 are all disposed on the crossbar. The multiple slag-blocking grid bars 210 are all inclined and perpendicular to the left-right direction. The upper ends of the multiple slag-blocking grid bars 210 are inclined forward. The gap between any two slag-blocking grid bars 210 is used for the rake teeth 111 to extend into.

[0042] refer to Figure 7 When the water level at the outer sea is higher than the water level at the end of the drainage ditch 10, the gate closes, the lowering drive component drives the screen assembly 200 to descend, the water pump starts, and the rotary drive component in the screen machine starts. After the lowering drive component drives the screen assembly 200 to descend, the multiple slag-blocking bars 210 can be staggered with the multiple rake teeth 111 on the mounting rod 110, that is, the multiple rake teeth 111 on the mounting rod 110 can all pass through the gap between the corresponding two slag-blocking bars 210. At this time, the multiple slag-blocking bars 210 are all submerged in the water in the drainage ditch 10. In this embodiment of the present invention, the water in the drainage ditch 10 moves from back to front. Under the interception action of the multiple slag-blocking bars 210, the suspended garbage in the water can be intercepted on the multiple slag-blocking bars 210. Driven by the rotary drive assembly, multiple mounting rods 110 and their rake teeth 111 begin to rotate, causing the rake teeth 111 between any two adjacent slag-blocking bars 210 to move forward and upward. This allows the rake teeth 111 to pick up suspended debris intercepted on the slag-blocking bars 210. After the rake teeth 111 have lifted the suspended debris to a certain height, they continue to rotate, causing the suspended debris on the rake teeth 111 to fall into the debris collection assembly, thus achieving the purpose of removing suspended debris from the water. The rake tooth assembly 111 100, the bar screen assembly 200, and the debris collection assembly in the bar screen are common configurations in the field of bar screens, and the corresponding debris retrieval principle will not be further elaborated here.

[0043] Understandably, reference Figure 2When the sea level is lower than the water level at the end of the drainage channel 10, the lifting drive component 300 drives the bar screen assembly 200 to rise, allowing it to be extracted from the water in the drainage channel 10 and positioned above the water. Once the bar screen assembly 200 is above the water, the flowing water in the drainage channel 10 can no longer impact it, effectively preventing damage and extending its service life. Furthermore, with the bar screen assembly 200 above the water in the drainage channel 10, the water is no longer obstructed, allowing gravity-fed water to flow smoothly into the open sea, ensuring the flood discharge safety of the drainage channel 10. When the water level at the outer sea is higher than the water level at the end of the drainage channel 10, the gate closes and the water pump starts. The lifting drive component 300 drives the screen component 200 to descend, immersing it in the water within the drainage channel 10. This also allows the screen component 200 to be staggered with the rake teeth component 111 100. Under the interception effect of the screen component 200, suspended debris in the water is trapped on it. Furthermore, under the action of the rake teeth component 111 100, the suspended debris trapped on the screen component 200 is lifted up, achieving the purpose of removing debris from the water and ensuring the water pump can operate normally for an extended period.

[0044] It should be explained that when the sea level is lower than the water level at the end of the drainage ditch 10, the rotary drive component shuts off to prevent the rake tooth assembly 111 100 from continuing to rotate, ensuring that the rake tooth assembly 111 100 does not obstruct water flow. When the bar screen assembly 200 is above the water, the bar screen no longer has the ability to clean and block water, allowing the water in the drainage ditch 10 to flow smoothly.

[0045] refer to Figure 1 and Figure 2The lifting drive assembly 300 includes a rotary drive 310, a winch 320, and a cable 330. The rotary drive 310 is mounted on the frame 500. The output end of the rotary drive 310 is connected to the winch 320. One end of the cable 330 is connected to the winch 320, and the other end is connected to the screen assembly 200. The rotary drive 310 drives the winch 320 to rotate, allowing the cable 330 to wind around the winch 320 and pull the screen assembly 200 upwards. It is understood that when the sea level is lower than the water level at the end of the drainage ditch 10, the rotary drive 310 drives the winch 320 to rotate clockwise, causing the cable 330 to wind around the winch 320 and pull the screen assembly 200 upwards, ensuring that the screen assembly 200 rises above the water body. When the sea level is higher than the water level at the end of the drainage ditch 10, the rotary drive 310 drives the winch 320 to reverse, allowing the cable 330 to be released from the winch 320. Under its own weight, the screen assembly 200 begins to descend, allowing it to be submerged in the water and interleaved with the rake tooth assembly 111 100. This allows the screen assembly 200 and the rake tooth assembly 111 100 to work together to remove suspended debris, ensuring the water pump can operate normally for a long time. In this embodiment, the other end of the cable 330 is connected to a crossbar in the screen assembly 200.

[0046] For details, please refer to Figure 2 and Figure 3 The lifting drive assembly 300 includes a connecting rod 350, two winches 320, and two cables 330. Both winches 320 are rotatably connected to the frame 500 and are connected by the connecting rod 350. One end of each cable 330 is connected to one of the two winches 320, and the other end is connected to the left and right sides of the grid assembly 200. A rotary drive unit 310 drives the connecting rod 350 to rotate, allowing the two cables 330 to wind around the two winches 320 and pull the grid assembly 200 upwards. The connecting rod 350 is parallel to the left-right direction, and the two winches 320 are connected by the connecting rod 350. The rotary drive unit 310 drives the connecting rod 350 to rotate around its own axis, thus enabling the two winches 320 to rotate synchronously. When the rotary drive 310 drives the two winches 320 to rotate clockwise, the two cables 330 can simultaneously pull the left and right sides of the grid assembly 200, allowing the grid assembly 200 to rise smoothly. When the rotary drive 310 drives the two winches 320 to rotate counterclockwise, the two cables 330 can be simultaneously released from the two winches 320 respectively, ensuring that the grid assembly 200 can descend smoothly. In this embodiment of the invention, the rotary drive 310 can be a motor.

[0047] refer to Figure 2 and Figure 3 The lifting drive assembly 300 also includes a fixed pulley 340, which is rotatably connected to the frame 500. A cable 330 is wound around the fixed pulley 340. A limiting annular groove is formed on the outer wall of the fixed pulley 340 for the cable 330 to extend into. It is understood that the cable 330 is wound around the fixed pulley 340 and located within the limiting annular groove. The inner wall of the limiting annular groove can limit the cable 330 to prevent it from swaying during retraction and extension, ensuring that the grid assembly 200 can be raised and lowered smoothly. In this embodiment of the invention, there are two fixed pulleys 340, and two cables 330 are wound around the two fixed pulleys 340 respectively.

[0048] refer to Figure 1 and Figure 2 The bar screen also includes a guide assembly 400, which is parallel to the vertical direction and is disposed on the inner wall of the drainage ditch 10. The bar screen assembly 200 is slidably connected to the inner wall of the drainage ditch 10 in the vertical direction. In one embodiment of this invention, the guide assembly 400 includes two slide rails and two sliders. The two slide rails are respectively connected to the left and right inner walls of the drainage ditch 10, and the two sliders are respectively disposed on the left and right sides of the bar screen assembly 200. The two sliders are slidably connected to the two slide rails, allowing the bar screen assembly 200 to move up and down on the drainage ditch 10.

[0049] refer to Figure 2 and Figure 4 The guide assembly 400 includes two first guide members 410 and two second guide members 420. Both the first guide members 410 and the second guide members 420 are parallel to the vertical direction. The two first guide members 410 are respectively installed on the left and right inner sidewalls of the drainage ditch 10, and the two second guide members 420 are respectively installed on the left and right inner sidewalls of the drainage ditch 10. The two first guide members 410 are respectively located in front of the two second guide members 420. Each of the two first guide members 410 has a first sliding groove 411, and each of the two second guide members 420 has a second sliding groove 421. The first sliding grooves 411 and the second sliding grooves 421 are parallel to the vertical direction. The upper left and right sides of the grille assembly 200 are slidably disposed within the two first sliding grooves 411, and the lower left and right sides of the grille assembly 200 are slidably disposed within the two second sliding grooves 421. (Reference) Figure 4The guide assembly 400 also includes two first rollers 220 and two second rollers 230. The two first rollers 220 are respectively located on the left and right sides of the upper end of the grille assembly 200, and the two second rollers 230 are respectively located on the left and right sides of the lower end of the grille assembly 200. The two first rollers 220 are respectively located within two first sliding grooves 411, and the two second rollers 230 are respectively located within two second sliding grooves 421. It can be understood that during the lifting and lowering process of the grille assembly 200, the two first rollers 220 can abut against the inner walls of the two first sliding grooves 411, and the two second rollers 230 can abut against the inner walls of the two second sliding grooves 421, allowing the first rollers 220 and the second rollers 230 to roll, thereby enabling the grille assembly 200 to lift and lower smoothly. In this embodiment of the present invention, two first rollers 220 are respectively connected to the slag-blocking grid bars 210 located on the left and right sides of the grid assembly 200, and two second rollers 230 are respectively connected to the slag-blocking grid bars 210 located on the left and right sides of the grid assembly 200.

[0050] refer to Figure 5 and Figure 6 The bar screen also includes two barbed hook limiting members 430 and two barbed barb limiting members 240. The two barbed hook limiting members 430 are respectively disposed in the two first sliding grooves 411, and the two barbed barb limiting members 240 are respectively disposed on the left and right sides of the upper end of the bar screen assembly 200. The two barbed barb limiting members 240 can abut against the two barbed hook limiting members 430 respectively to restrict the bar screen assembly 200 from moving forward and upward. It should be explained that both the rake tooth 111 assembly 100 and the bar screen assembly 200 are inclined from back to front. In this embodiment of the present invention, the rake tooth 111 assembly 100 includes multiple mounting rods 110, and each mounting rod 110 is provided with multiple rake teeth 111. During the operation of the bar screen, the multiple rake teeth 111 on the multiple mounting rods 110 move forward and upward, that is, the multiple rake teeth 111 on the multiple mounting rods 110 scoop up suspended garbage in the water. The grid assembly 200 includes multiple slag-blocking grid bars 210 evenly distributed in the left-right direction, and the multiple slag-blocking grid bars 210 are respectively staggered with multiple rake teeth 111 on the mounting rod 110. As the multiple rake teeth 111 on the mounting rod 110 move forward and upward, the rake teeth 111 may come into contact with adjacent slag-blocking grid bars 210, which may cause the rake teeth 111 to drive the slag-blocking grid bars 210 to move forward and upward, thereby causing the grid assembly 200 to rise and reducing the garbage interception effect of the grid assembly 200.

[0051] Understandably, reference Figure 6 , Figure 6The dotted line represents the barb limiting member 240 that abuts against the barb limiting member 430. The barb limiting member 240 is tilted forward and upward. When the rake tooth assembly 111 100 moves the grid assembly 200 forward and upward, the barb limiting member 240 on the grid assembly 200 will move forward and upward and abut against the barb limiting member 430 in the first chute 411, thus limiting the grid assembly 200 from rising further and ensuring the garbage interception effect of the grid assembly 200. (Reference) Figure 5 , Figure 5 The dotted line represents the barb limiting member 240 that moves upward and passes through the barb limiting member 430. When the lifting drive assembly 300 drives the grid assembly 200 to rise, the barb limiting member 240 will not abut against the barb limiting member 430, allowing the grid assembly 200 to rise smoothly. In this embodiment of the present invention, the lower end of the frame 500 extends into the drainage ditch 10, the upper end of the frame 500 is provided with a first magnetic suction member, and the lower end of the grid assembly 200 is provided with a second magnetic suction member. The first magnetic suction member can magnetically attract the second magnetic suction member, so that the grid assembly 200 and the rake tooth 111 assembly 100 are staggered. Understandably, after the lifting drive assembly 300 drives the grille assembly 200 to descend, the second magnetic attractor on the grille assembly 200 can magnetically attract the first magnetic attractor on the lower end of the frame 500, thus fixing the grille assembly 200 to the frame 500. This also ensures that the grille assembly 200 and the rake tooth assembly 111 are staggered, preventing the rake tooth assembly 111 from lifting the grille assembly 200. After the lifting drive assembly 300 drives the grille assembly 200 to rise, the second magnetic attractor on the grille assembly 200 and the first magnetic attractor on the frame 500 will disengage, allowing the grille assembly 200 to rise smoothly.

[0052] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above 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.

[0053] Of course, this utility model is not limited to the above-described embodiments. Those skilled in the art can make equivalent modifications or substitutions without departing from the spirit of this utility model. All such equivalent modifications or substitutions are included within the scope defined by the claims of this application.

Claims

1. A grating machine characterized by, The utility model relates to a garbage collecting device for drainage ditch, comprising: a rack (500) for connecting on a drainage ditch (10); a rake (111) assembly (100) arranged on the rack (500), the rake (111) assembly (100) is inclined from back to front, and the lower end of the rake (111) assembly (100) extends into the drainage ditch (10); a grid assembly (200) configured to be connected on the inner side wall of the drainage ditch (10) in a lifting manner, the grid assembly (200) is inclined from back to front, the grid assembly (200) can be immersed in the water body in the drainage ditch (10) and staggered with the rake (111) assembly (100), so that the grid assembly (200) can intercept the suspended garbage in the water body in the drainage ditch (10), and the rake (111) assembly (100) can pick up the suspended garbage in the water body in the drainage ditch (10); a lifting drive assembly (300) arranged on the rack (500), the lifting drive assembly (300) can drive the grid assembly (200) to rise, so that the grid assembly (200) is drawn out of the water body in the drainage ditch (10).

2. The grating machine of claim 1, wherein: The lifting drive assembly (300) comprises a rotating drive (310), a winch (320) and a cable (330), the rotating drive (310) is arranged on the rack (500), the output end of the rotating drive (310) is connected with the winch (320), one end of the cable (330) is connected with the winch (320), the other end of the cable (330) is connected with the grid assembly (200), and the rotating drive (310) is used for driving the winch (320) to rotate, so that the cable (330) can be wound on the winch (320), and the cable (330) can pull the grid assembly (200) to rise.

3. The grating machine of claim 2, wherein: The lifting drive assembly (300) comprises a connecting rod (350), two winches (320) and two cables (330), the two winches (320) are rotatably connected on the rack (500), the two winches (320) are connected through the connecting rod (350), one end of the two cables (330) is connected with the two winches (320) respectively, and the other end of the two cables (330) is connected with the left and right sides of the grid assembly (200) respectively, the rotating drive (310) is used for driving the connecting rod (350) to rotate, so that the two cables (330) can be wound on the two winches (320) respectively, and the two cables (330) can pull the grid assembly (200) to rise.

4. The grating machine of claim 2, wherein: The lifting driving assembly (300) further comprises a fixed pulley (340) rotatably connected to the rack (500), and the cable (330) is wound around the fixed pulley (340).

5. The grating machine of claim 4, wherein: A limiting ring groove is formed in the outer wall of the fixed pulley (340) for the cable (330) to extend into.

6. The grating machine of claim 1, wherein: Further comprising a guide assembly (400) parallel to the up-down direction, which is arranged on the inner side wall of the drainage channel (10), and the grille assembly (200) is slidably connected to the inner side wall of the drainage channel (10) in the up-down direction.

7. The grating machine of claim 6, wherein: The guide assembly (400) comprises two first guide members (410) and two second guide members (420), both of which are parallel to the up-down direction, and both of which are arranged on the left and right inner side walls of the drainage channel (10), respectively. The two first guide members (410) are arranged in front of the two second guide members (420), respectively, and the first sliding groove (411) is formed in the two first guide members (410), respectively. The second sliding groove (421) is formed in the two second guide members (420), respectively. The first sliding groove (411) and the second sliding groove (421) are parallel to the up-down direction, and the left and right sides of the upper end of the grille assembly (200) are slidably arranged in the two first sliding grooves (411), respectively. The left and right sides of the lower end of the grille assembly (200) are slidably arranged in the two second sliding grooves (421), respectively.

8. The grating machine of claim 7, wherein: The guide assembly (400) further comprises two first rollers (220) and two second rollers (230), the two first rollers (220) are arranged on the left and right sides of the upper end of the grille assembly (200), respectively, and the two second rollers (230) are arranged on the left and right sides of the lower end of the grille assembly (200), respectively. The two first rollers (220) are arranged in the two first sliding grooves (411), respectively, and the two second rollers (230) are arranged in the two second sliding grooves (421), respectively.

9. The grating machine of claim 7, wherein: Further comprising two barb limiting members (430) and two barb limiting members (240), the two barb limiting members (430) are arranged in the two first sliding grooves (411), respectively, and the two barb limiting members (240) are arranged on the left and right sides of the upper end of the grille assembly (200), respectively. The two barb limiting members (240) can respectively abut against the two barb limiting members (430) to limit the forward and upward movement of the grille assembly (200).

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