Irrigation device for landscaping construction

By designing a landscaping construction watering device including a fixed installation guide rail seat, a mobile support guide base, a counterweight water storage tank and a hydraulic telescopic pole, the problem of waste of water resources and uneven watering caused by conventional watering devices is solved, and efficient watering effect is achieved to adapt to changes in the growth height of green plants.

CN120188710AInactive Publication Date: 2025-06-24BEIJING LONGDING ANYUE CONSTRUCTION ENGINEERING CO LTD
View PDF 0 Cites 0 Cited by

Patent Information

Application Number
CN202510581563.2
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-05-07
Publication Date
2025-06-24
Estimated Expiration
Not applicable · inactive patent

AI Technical Summary

Technical Problem

During the initial construction of the garden, conventional watering devices result in waste of water resources and uneven watering, and as green plants grow, the height of the device cannot be adjusted, resulting in equipment replacement.

Method used

A pouring device for landscaping construction is designed, including a fixed installation guide rail seat, a mobile support guide base, a counterweight water storage tank and a hydraulic telescopic rod. The stable movement of the support guide base and the height adjustment of the hydraulic telescopic rod are achieved through the linkage gear plate and transmission wheel system.

Benefits of technology

Efficient and even watering of green plants is achieved, and the waste of water resources is reduced. As the green plants grow, it adapts to the watering needs of different heights through the adjustment of hydraulic telescopic rods, and extends the service life of the equipment.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN120188710A_ABST
    Figure CN120188710A_ABST
Patent Text Reader

Abstract

The invention discloses an irrigation device for landscaping construction, and relates to the technical field of landscaping construction, the irrigation device comprises a fixed mounting guide rail seat, and a supporting guide base capable of moving and conveying is arranged above the fixed mounting guide rail seat; a balance weight type water storage tank capable of supplying liquid to the pressurizing cavity is arranged on the left side of the upper portion of the supporting and guiding base. A hydraulic telescopic rod capable of conducting lifting operation on the movable supporting plate is arranged on the inner side of the fixed outer frame. The problems that in the preliminary construction process of a garden, green plants such as flowers and shrubs are just planted, the growth height is limited, the growth range is concentrated in one place, and in the irrigation process of the green plants, a conventional irrigation device always adopts a comprehensive covering type irrigation mode, so that water resources are greatly wasted, irrigation is not uniform, and the irrigation cost is high are solved. Meanwhile, after flowers and other shrub green plants grow up, the height of an irrigation device cannot be adjusted, and equipment needs to be replaced.
Need to check novelty before this filing date? Find Prior Art

Description

Technical Field

[0001] The present invention relates to the technical field of landscaping construction, and particularly relates to an irrigation device for landscaping construction. Background Art

[0002] Garden irrigation is a technical measure to supplement the soil moisture required for the growth of garden plants to improve their growth conditions, to supplement the soil moisture of garden green spaces and meet the water requirements of plants. Among them, during the initial construction process of gardens, due to the small scope of the greening area and the fixed monomers, in order to adapt to the initial irrigation of small-scale green belts, an irrigation device is needed.

[0003] Compared with the existing irrigation devices, there are still the following defects: during the initial construction of gardens, since green plants such as flowers and shrubs have just been planted, their growth height is limited and the range is concentrated in one place. During the irrigation process of such green plants, conventional irrigation devices often adopt a full-coverage irrigation method, which not only greatly wastes water resources, but also leads to uneven irrigation, causing water to splash due to factors such as leaves. At the same time, as shrubs such as flowers grow, the irrigation device cannot be adjusted in height, resulting in the need to replace the equipment. Summary of the Invention

[0004] The purpose of the present invention is to provide an irrigation device for landscaping construction, and solve the following technical problems: during the initial construction of gardens, since green plants such as flowers and shrubs have just been planted, their growth height is limited and the range is concentrated in one place. During the irrigation process of such green plants, conventional irrigation devices often adopt a full-coverage irrigation method, which not only greatly wastes water resources, but also leads to uneven irrigation, causing water to splash due to factors such as leaves. At the same time, as shrubs such as flowers grow, the irrigation device cannot be adjusted in height, resulting in the need to replace the equipment.

[0005] The purpose of the present invention can be achieved by the following technical solutions:

[0006] An irrigation device for landscaping construction, comprising: a fixedly installed guide rail seat, above which there is a support and guide base capable of moving and conveying, on the upper left side of the support and guide base there is a weight type water storage tank for supplying liquid to a pressurization cavity, and on the right side of the weight type water storage tank there is a fixed outer frame located above the support and guide base and for horizontally moving a protective frame plate;

[0007] Inside the fixed outer frame there is a hydraulic telescopic rod for lifting and lowering an active support plate, and inside the active support plate there is an active limit plate for horizontally moving the protective frame plate.

[0008] As a further solution of the present invention: a first linkage gear disc is arranged inside the support and guide base, an internal gear adjusting belt is arranged outside the first linkage gear disc, a first transmission wheel is fixedly installed at the outer end of the first linkage gear disc, and a second transmission wheel is arranged at the lower end of the first transmission wheel for rotating the moving wheel.

[0009] As a further solution of the present invention: the first linkage gear disc and the internal gear adjusting belt are connected in a meshing manner, and the first linkage gear disc and the first transmission wheel are fixedly connected;

[0010] The first transmission wheel and the second transmission wheel are connected in a meshing manner.

[0011] As a further solution of the present invention: the second transmission wheel and the moving wheel are coaxially and fixedly connected, and the moving wheel forms a fitting sliding structure inside the fixedly installed guide rail seat.

[0012] As a further solution of the present invention: the load-bearing workbench and the fixed limit rod are vertically and fixedly connected, and the fixed limit rod forms a clamping lifting movement inside the fixed outer frame;

[0013] The longitudinal section of the fixed outer frame is in a "U" - shaped structure.

[0014] As a further solution of the present invention: a movable support plate is clamped and slidably connected inside the load-bearing workbench, and the movable support plate and the reciprocating lead screw are connected in a threaded manner.

[0015] As a further solution of the present invention: third transmission wheels are arranged on both the front and rear sides at the right end inside the movable support plate, and the third transmission wheels and the movable limit plate are connected in a meshing manner;

[0016] The movable limit plate forms a fitting sliding structure inside the movable support plate.

[0017] As a further solution of the present invention: a worm is installed on the left side inside the protective frame plate, a worm gear is connected to the right side of the worm, and a fourth transmission wheel is fixedly connected to the lower end of the worm gear.

[0018] As a further solution of the present invention: the worm and the worm gear are connected in a meshing manner, and the right end of the fourth transmission wheel is meshingly connected to a second linkage gear disc.

[0019] As a further solution of the present invention: drain ports are provided on both the inner sides of the second linkage gear disc and the spray chamber plate for adjusting the water volume, and the second linkage gear disc and the spray chamber plate are in a fitting rotational connection;

[0020] The drainage guide plate arranged above the second linkage gear disc is nested and fitted with the drain pipe.

[0021] Advantages of the present invention:

[0022] 1. Through the threaded connection between the reciprocating lead screw and the movable support plate, and the meshing connection between the third transmission wheel and the movable limit plate, the overall protective frame plate can be extended and adjusted to the right, facilitating the watering operation of the innermost green plants. With the hydraulic telescopic rod arranged at the lower end of the load-bearing workbench and located inside the fixed outer frame, the overall height of the load-bearing workbench can be adjusted by lifting and lowering movements.

[0023] In addition, through the meshing connection between the first transmission wheel and the second transmission wheel, the overall support guide base can be stably moved and conveyed on the fixed installation guide rail seat, facilitating the circumferential movement of the fixed installation guide rail seat installed around the green plants, thereby watering the green plants within the range of the fixed installation guide rail seat. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The present invention will be further described below with reference to the drawings.

[0025] Figure 1 is the overall sectional structure schematic diagram of the connection between the fixed installation guide rail seat and the support guide base of the present invention;

[0026] Figure 2 is the overall structure schematic diagram of the connection between the fixed outer frame and the load-bearing workbench of the present invention;

[0027] Figure 3 is the overall structure schematic diagram of the fixed installation guide rail seat of the present invention;

[0028] Figure 4 is the overall structure schematic diagram of the connection between the fixed installation guide rail seat and the support guide base of the present invention;

[0029] Figure 5 is the overall exploded structure schematic diagram of the connection between the first linkage gear disc and the internal gear adjustment belt of the present invention;

[0030] Figure 6 is the overall exploded structure schematic diagram of the connection between the third transmission wheel and the movable limit plate of the present invention;

[0031] Figure 7 is the overall structure schematic diagram of the connection between the load-bearing workbench and the reciprocating lead screw of the present invention;

[0032] Figure 8 is the overall structure schematic diagram of the connection between the fourth transmission wheel and the second linkage gear disc of the present invention;

[0033] Figure 9It is a schematic diagram of the overall sectional structure of the connection between the second linkage gear disc and the injection cavity plate of the present invention.

[0034] In the figure: 1. Fixed installation guide rail seat; 2. Support and guide base; 201. First linkage gear disc; 202. Inner tooth adjustment belt; 203. First transmission wheel; 204. Second transmission wheel; 205. Moving wheel; 3. Counterweight type water storage tank; 4. Fixed outer frame; 401. Hydraulic telescopic rod; 402. Load-bearing bench; 403. Fixed limit rod; 404. Reciprocating lead screw; 405. Movable support plate; 406. Third transmission wheel; 407. Movable limit plate; 5. Protective frame plate; 501. Worm; 502. Worm gear; 503. Fourth transmission wheel; 504. Second linkage gear disc; 505. Drainage guide plate; 506. Injection cavity plate; 507. Boosting cavity; 508. Drain pipe; 509. Drainage port. Detailed implementation manners

[0035] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0036] Please refer to Figures 1-9 As shown, the present invention is an irrigation device for landscaping construction.

[0037] Embodiment 1

[0038] Please refer to Figures 1-5 In it, the present invention provides a technical solution: a fixed installation guide rail seat 1 is provided, and above the fixed installation guide rail seat 1, there is a support and guide base 2 that can move and convey. On the upper left side of the support and guide base 2, there is a counterweight type water storage tank 3 that can supply liquid to the boosting cavity 507. On the right side of the counterweight type water storage tank 3, there is a fixed outer frame 4 located above the support and guide base 2 and used for horizontally moving the protective frame plate 5.

[0039] Furthermore, a first linkage gear disc 201 is arranged inside the support and guide base 2. An inner tooth adjustment belt 202 is arranged outside the first linkage gear disc 201. A first transmission wheel 203 is fixedly installed at the outer end of the first linkage gear disc 201. A second transmission wheel 204 is arranged at the lower end of the first transmission wheel 203 for rotating the moving wheel 205.

[0040] Furthermore, the first linkage gear disc 201 and the inner tooth adjustment belt 202 are connected in a meshing manner, and the first linkage gear disc 201 and the first transmission wheel 203 are fixedly connected;

[0041] The first transmission wheel 203 and the second transmission wheel 204 are connected in a meshing manner.

[0042] Furthermore, the second transmission wheel 204 and the moving wheel 205 are coaxially and fixedly connected, and the moving wheel 205 forms a fitting sliding structure inside the fixedly installed guide rail seat 1.

[0043] Specifically, first, the fixedly installed guide rail seat 1 is sequentially spliced and installed around the green plant, and construction bolts are used to penetrate the inner sides of the left and right ends of the fixedly installed guide rail seat 1 and be tightly connected to the ground, so that the fixedly installed guide rail seat 1 forms a range circle around the green plant. At this time, the support and guide base 2 is installed above the fixedly installed guide rail seat 1, and the moving wheel 205 is fitted and installed on the inner surface of the upper end of the fixedly installed guide rail seat 1. When the servo motor is turned on to rotate the first linkage gear disc 201, it can drive the internal gear adjustment belt 202 meshed with the outside of the first linkage gear disc 201 to rotate synchronously, so that the first linkage gear disc 201 and another monomer rotate synchronously. At the same time, since the first transmission wheel 203 fixedly connected to the outer end of the first linkage gear disc 203 and the second transmission wheel 204 are connected in a meshing manner, when the first linkage gear disc 201 rotates, it will drive the first transmission wheel 203 to rotate synchronously, and the second transmission wheel 204 meshed with the first transmission wheel 203 will drive the moving wheel 205 to rotate, so that the moving wheel 205 drives the entire support and guide base 2 to perform a fitting roll on the upper surface of the fixedly installed guide rail seat 1.

[0044] In addition, the fixedly installed guide rail seats 1 are fixedly installed on the ground around the green plant through construction bolts, which can make the right end of the support and guide base 2 always move around the range of the green plant. By providing a convex structure on the inner side of the lower end of the support and guide base 2 and engaging and docking with the fixedly installed guide rail seat 1, the overall left - right tilt of the support and guide base 2 can be avoided. This setting can ensure the overall stability of the support and guide base 2. Combining with the diameter of the first transmission wheel 203 being larger than the diameter of the second transmission wheel 204, the rotation speed of the second transmission wheel 204 can be increased when the first transmission wheel 203 rotates, thereby increasing the overall moving speed of the support and guide base 2. Since the fixedly installed guide rail seat 1 is set to be narrower at the top and wider at the bottom as a whole, the fixedly installed guide rail seat 1 can be stably installed around the green plant and stably limit the support and guide base 2, improving the overall stability of the support and guide base 2 and preventing deviation. Among them, the servo motors symmetrically arranged at the inner end of the first linkage gear disc 201 are synchronous motors, which can be turned on simultaneously and have the same operating speed and other functions.

[0045] Embodiment 2

[0046] Please refer to Figure 1 、 Figure 8 and Figure 9The present invention provides a technical solution: a worm 501 is installed on the left side of the inner side of the protective frame plate 5, a worm wheel 502 is connected to the right side of the worm 501, and a fourth transmission wheel 503 is fixedly connected to the lower end of the worm wheel 502.

[0047] Furthermore, the worm 501 and the worm wheel 502 are connected in a meshing manner, and the right end of the fourth transmission wheel 503 is meshingly connected with the second linkage gear plate 504 .

[0048] Furthermore, the inner sides of the second linkage gear plate 504 and the injection cavity plate 506 are both provided with a drainage port 509 for adjusting the water volume, and the second linkage gear plate 504 and the injection cavity plate 506 are connected in a fitting rotation manner;

[0049] The drainage guide plate 505 disposed above the second linkage gear plate 504 and the drainage pipe 508 are nested and fitted together.

[0050] Specifically, in combination with the first embodiment, since the counterweight water storage tank 3 is arranged on the left side of the upper end of the support guide base 2, and the upper right side of the support guide base 2 is provided with a combination of a fixed outer frame 4 and a protective frame plate 5, when the protective frame plate 5 moves to the right as a whole, and under the counterweight of the counterweight water storage tank 3, the overall stability of the support guide base 2 is increased, at this time, the counterweight water storage tank 3 is connected to the pressurizing cavity 507 through a hose, and the liquid in the pressurizing cavity 507 can be pressurized and circulated downward through the drain pipe 508, and then sprayed out from the spray cavity plate 506 to water the green plants;

[0051] Among them, since the inner sides of the second linkage gear plate 504 and the injection chamber plate 506 are both provided with drainage ports 509, and the drainage ports 509 are respectively arranged alternately on the inner sides of the second linkage gear plate 504 and the injection chamber plate 506, when the servo motor is turned on to rotate the worm 501, the worm wheel 502 meshing with the worm 501 can be driven to rotate synchronously. Here, the diameter of the worm wheel 502 is smaller than the diameter of the fourth transmission wheel 503, and the worm wheel 502 and the fourth transmission wheel 503 are coaxially fixedly connected. When the worm wheel 502 rotates, it can drive the fourth transmission wheel 503 to rotate synchronously, and can rotate when the worm wheel 502 rotates. When the fourth transmission wheel 503 rotates one circle, it drives the fourth transmission wheel 503 to rotate a quarter circle, staggering the rotation speed of the fourth transmission wheel 503 and the worm wheel 502. At this time, the fourth transmission wheel 503 drives the meshing second linkage toothed disc 504 to rotate synchronously. Through the staggered setting of the drainage port 509, the second linkage toothed disc 504 is connected with the injection cavity plate 506, so that the drainage port 509 has overlaps or through holes of different sizes, so that the water flow sprayed by the drainage pipe 508 can spray the liquid according to the adjusted aperture size, thereby increasing the size of the water flow. In the early stage of green plant planting, watering is performed when the plant is small or the rhizome is fragile, thereby avoiding damage to the plant.

[0052] At this time, through the transportation of the counterweight type water storage tank 3, the liquid flows into the pressurization cavity 507 through the hose, and then flows into the drainage guide plate 505 along the drain pipe 508. Under the action of the drainage guide plate 505, liquid leakage can be avoided and the drainage effect can be achieved. Then, under the dislocation adjustment of the drainage guide plate 505 and the injection cavity plate 506, the liquid can be injected according to different aperture sizes, so that the liquid water flow can be controlled and adjusted. A hole groove corresponding to the injection cavity plate 506 is opened at the lower end of the protective frame plate 5, and the diameter of the hole groove is larger than the aperture size of the lower end of the injection cavity plate 506, so as to avoid the impact when the liquid is injected downward and cause the water flow to splash around.

[0053] Embodiment III

[0054] Please refer to Figure 1 、 Figure 2 、 Figures 6-8 In [references], the present invention provides a technical solution: a hydraulic telescopic rod 401 capable of lifting the movable support plate 405 is arranged inside the fixed outer frame 4, and a movable limiting plate 407 for horizontally moving the protective frame plate 5 is arranged inside the movable support plate 405.

[0055] Furthermore, the load-bearing platform 402 and the fixed limiting rod 403 are vertically and fixedly connected, and the fixed limiting rod 403 constitutes a clamping type lifting movement inside the fixed outer frame 4;

[0056] The longitudinal section of the fixed outer frame 4 is in a "U" - shaped structure.

[0057] Furthermore, the movable support plate 405 is clamped and slidably connected inside the load-bearing platform 402, and the movable support plate 405 is connected to the reciprocating lead screw 404 in a threaded manner.

[0058] Furthermore, third transmission wheels 406 are arranged on both the front and rear sides of the right end inside the movable support plate 405, and the third transmission wheels 406 are connected to the movable limiting plate 407 in a meshing manner;

[0059] The movable limiting plate 407 constitutes a fitting sliding structure inside the movable support plate 405.

[0060] Specifically, in combination with Embodiment 1 and Embodiment 2, as the green plants continue to grow, their height and growth density will also continuously increase. After the green plants grow up, the previous watering height and range cannot meet the watering effect of the green plants. At this time, it is necessary to turn on the hydraulic telescopic rod 401 to drive the load-bearing platform 402 to move up and down within the fixed outer frame 4. Since the fixed limit rods 403 are fixedly installed on the lower sides of the front and rear ends of the load-bearing platform 402, the overall height of the load-bearing platform 402 can be stably adjusted. When the overall height of the load-bearing platform 402 is adjusted to the height of the green plants within the range of the fixedly installed guide rail seat 1, the servo motor can be turned on to rotate the reciprocating lead screw 404, so that the movable support plate 405 threadedly connected to the reciprocating lead screw 404 moves horizontally within the load-bearing platform 402. With convex structures provided on the lower sides of the front and rear ends of the movable support plate 405, and the movable support plate 405 constituting a snap-fit sliding structure within the relief groove provided on the upper surface of the load-bearing platform 402 through the convex structures, it can be avoided that the overall movable support plate 405 exceeds the support range of the load-bearing platform 402 when moving to the right;

[0061] As the growth range of the green plants continues to expand, after extending the distance of the right end of the movable support plate 405, the servo motor can be turned on to rotate the third transmission wheel 406, so that the movable limit plate 407 meshed with the third transmission wheel 406 moves horizontally within the movable support plate 405, driving the overall protective frame plate 5 to move to the rightmost end. At this time, with the rolling movement of the moving wheels 205 on the upper surface of the fixedly installed guide rail seat 1, the extended and expanded protective frame plate 5 performs circumferential watering around the top of the green plants, enabling the sprayed water flow to perform top watering on the green plants and allowing the water to flow down along the leaves to irrigate the roots of the green plants; among them, with the cooperation of the support guide base 2, the fixed outer frame 4, and the protective frame plate 5, timing operations can be performed through the control device, or a moisture content measuring instrument can be installed in the soil. When the moisture content is lower than a certain value, the support guide base 2 is automatically driven to move on the fixedly installed guide rail seat 1, and then the protective frame plate 5 is used to water the green plants, making the entire device intelligent. Among them, when the protective frame plate 5 moves to the rightmost end, the overall movable support plate 405 also moves to the rightmost end. At this time, the upper end of the fixed outer frame 4 has the maximum weight at the right end. Under the counterweight of the counterweight water tank 3, the overall balance of the support guide base 2 can be increased, avoiding the phenomenon that the support guide base 2 tilts on the fixedly installed guide rail seat 1.

[0062] The above has described a specific embodiment of the present invention in detail, but the content described is only the preferred embodiment of the present invention and cannot be considered as limiting the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the application of the present invention should still fall within the scope covered by the patent of the present invention.

Claims

1. A watering device for landscaping construction, characterized in that: It includes a fixed mounting guide rail base (1), above which there is a support and guide base (2) that can move and convey. On the upper left side of the support and guide base (2), there is a counterweight water storage tank (3) that can supply liquid to the pressurization cavity (507). On the right side of the counterweight water storage tank (3), there is a fixed outer frame (4) located above the support and guide base (2) and used to laterally move the protective frame plate (5). Inside the fixed outer frame (4), there is a hydraulic telescopic rod (401) that can lift and lower the movable support plate (405). Inside the movable support plate (405), there is a movable limit plate (407) that laterally moves the protective frame plate (5).

2. A watering device for landscaping construction according to claim 1, characterized in that: Inside the support and guide base (2), there is a first linkage gear disk (201). Outside the first linkage gear disk (201), there is an internal gear adjustment belt (202). The outer end of the first linkage gear disk (201) is fixedly installed with a first transmission wheel (203). Below the first transmission wheel (203), there is a second transmission wheel (204) used to rotate the moving wheel (205).

3. A watering device for landscaping construction according to claim 2, characterized in that: The first linkage gear disk (201) is connected to the internal gear adjustment belt (202) in a meshing manner, and the first linkage gear disk (201) is fixedly connected to the first transmission wheel (203). The first transmission wheel (203) is connected to the second transmission wheel (204) in a meshing manner.

4. A watering device for landscaping construction according to claim 2, characterized in that: The second transmission wheel (204) is coaxially and fixedly connected to the moving wheel (205), and the moving wheel (205) forms a fitting sliding structure inside the fixed mounting guide rail base (1).

5. A watering device for landscaping construction according to claim 1, characterized in that: The load-bearing platform (402) is vertically and fixedly connected to the fixed limit rod (403), and the fixed limit rod (403) forms a clamping lifting movement inside the fixed outer frame (4). The longitudinal section of the fixed outer frame (4) is in a "U" shape structure.

6. A watering device for landscaping construction according to claim 5, characterized in that: The load-bearing platform (402) is connected to the movable support plate (405) in a clamping and sliding manner, and the movable support plate (405) is connected to the reciprocating lead screw (404) in a threaded manner.

7. A watering device for landscaping construction according to claim 5, characterized in that: On the front and rear sides of the right end inside the movable support plate (405), there are third transmission wheels (406), and the third transmission wheels (406) are connected to the movable limit plate (407) in a meshing manner. The movable limit plate (407) forms a fitting sliding structure inside the movable support plate (405).

8. The irrigation device for landscaping construction according to claim 1 is characterized in that: On the left side inside the protective frame plate (5), there is a worm (501). On the right side of the worm (501), there is a worm gear (502), and the lower end of the worm gear (502) is fixedly connected to a fourth transmission wheel (503).

9. A watering device for landscaping construction according to claim 8, characterized in that: The worm (501) is connected to the worm gear (502) in a meshing manner, and the right end of the fourth transmission wheel (503) is meshed with a second linkage gear disk (504).

10. A watering device for landscaping construction according to claim 8, characterized in that: The inner sides of the second linkage toothed disc (504) and the injection cavity plate (506) are both provided with drainage ports (509) for adjusting the water volume. The second linkage toothed disc (504) and the injection cavity plate (506) are connected in a close-fitting rotational manner. The drainage guide plate (505) disposed above the second linkage toothed disc (504) and the drainage pipe (508) are connected in a nested manner.