Lifting type rainwater grating for urban flood drainage channel

Abstract

The utility model discloses a lifting type rainwater grating for an urban flood drainage channel, the lower part of the rainwater grating is immersed at the bottom of the flood drainage channel, the middle part of the rainwater grating is positioned and erected on the side bank of the flood drainage channel, the top of the rainwater grating is provided with lifting and hoisting power by a gantry crane, and automatic deslagging units are arranged on the two sides of the rainwater grating; the upper portion of the rainwater grating is of a balance weight solid structure extending to the position above the flood drainage channel, the lower portion of the rainwater grating is of a grid hollow structure extending to the bottom of the flood drainage channel, and the grid hollow structure cleans dirt through circulating motion of an automatic deslagging unit chain wheel. The rainwater grid is automatically lifted / dropped by the gantry crane, rainwater (mountain spring water) in the flood drainage channel is automatically filtered and automatically deslagged on the premise that the flood drainage flow is guaranteed, the deslagging efficiency of the rainwater grid is improved, and the problem that the rainwater grid is difficult to effectively arrange under the condition that urban environment construction conditions are limited is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of municipal drainage facilities, and in particular to a lifting rainwater grille used in urban flood drainage channels. Background Art

[0002] At present, rainwater grates are mostly used in drainage pumping stations, rainwater collection ports and ground drainage ditches. The grates are mainly designed as fixed structures and cannot be moved. The fixed grates are used to simply filter the dirt in the river. The scum intercepted by the grates is mainly cleaned manually. This method is not only inefficient, but also cannot drain water in time. With the development of industrial automation, the current drainage pumping station is equipped with an automatic basket-type slag remover in the grating forebay to remove slag in order to drain water and flood in time, but the grating is still a fixed structure and still faces the problem of manual cleaning.

[0003] Drainage pump stations generally occupy a large area, and the construction conditions are more conducive to the installation of larger grilles. However, this cannot be implemented for urban drainage channels with relatively narrow sites. If fixed grilles are still used, they cannot be effectively widened according to the design conditions due to the limitations of the construction site, which will inevitably affect the safety of urban flood discharge. Therefore, grilles are rarely installed in some drainage channels in cities, or relatively low fixed grilles are used.

[0004] In summary, how to design a rainwater grate that can remove slag without affecting flood flow under limited construction conditions has become a technical problem that needs to be urgently solved by people in this field. Utility Model Content

[0005] The purpose of the utility model is to solve the deficiencies of the prior art and to propose a lifting rainwater grille for urban flood drainage channels. The rainwater grille is automatically lifted / lowered by a gantry crane, and rainwater (spring water) in the flood drainage channel is automatically filtered and slag removed while ensuring the flood flow rate, thereby improving the slag removal efficiency of the rainwater grille and solving the problem that it is difficult to effectively set up rainwater grilles when urban environmental construction conditions are limited.

[0006] A lifting rainwater grille for urban flood drainage channels, wherein the lower part of the rainwater grille is immersed in the bottom of the flood drainage channel, the middle part of the rainwater grille is positioned and erected on the side bank of the flood drainage channel, the top of the rainwater grille is provided with lifting and hoisting power by a gantry crane, and automatic slag discharging units are provided on both sides of the rainwater grille;

[0007] The upper part of the rainwater grille is a solid structure with a counterweight extending to the top of the flood discharge channel, and the lower part is a hollow grid structure extending to the bottom of the flood discharge channel. The hollow grid structure is cleaned of dirt by the cyclic motion of the sprocket of the automatic slag discharge unit.

[0008] Preferably, the automatic slag discharge unit comprises an upper rotating shaft, a lower fixed shaft, a transmission chain, a rake rod and a motor, wherein both ends of the upper rotating shaft and the lower fixed shaft are coaxially connected with sprockets, and a transmission chain is wound around the sprocket to drive the upper rotating shaft and the lower fixed shaft to rotate synchronously;

[0009] The upper rotating shaft rotates and penetrates a solid structure of a counterweight connected to the upper part of the rainwater grille;

[0010] The lower fixed shaft is fixed to and penetrates the hollow grid structure connected to the lower part of the rainwater grille;

[0011] The two ends of the rake rod are pinned and connected to two chains wound on the upper rotating shaft and the lower fixed shaft, and a plurality of rake nails for cleaning dirt in the gaps of the hollow structure of the grid are radially fixed on the rake rod;

[0012] The motor is fixed on the outer shell of the solid counterweight structure on the upper part of the rainwater grille, and the power output end of the motor is connected to one end of the upper rotating shaft through a transmission belt.

[0013] Preferably, sprockets are coaxially fixed at both ends of the upper rotating shaft, and the sprockets are coaxially rotatably connected at both ends of the lower fixed shaft.

[0014] Preferably, the gantry crane is straddled above the flood discharge channel, and the power output end of the gantry crane is hoisted and attached to the outer shell of the solid structure of the counterweight, and V-shaped guide blocks with an open opening set upward are fixed on the side banks of the flood discharge channel in the middle of both sides of the gantry crane; positioning rods are fixed on both sides of the rainwater grille, which are radially overlapped on the inside of the V-shaped guide blocks and provide vertical positioning support for the entire rainwater grille.

[0015] Preferably, support rods are radially fixed to both ends of the lower fixed shaft, and the bottom of the support rods is supported on the bottom of the flood discharge channel.

[0016] Preferably, a guide groove is obliquely opened on the side wall of the flood discharge channel, and the two ends of the fixed shaft under the overlap are lifted, slid and guided in the guide groove.

[0017] Preferably, a liquid level meter is provided at the bottom of the flood discharge channel.

[0018] The advantages and technical effects of the utility model are:

[0019] The utility model discloses a lifting rainwater grille for urban flood drainage channels. The automatic slag removal unit automatically cleans the dirt accumulated on the hollow structure of the grille, cooperates with the liquid level meter to obtain the water level information in the channel, adjusts the positioning height of the rainwater grille according to the flood discharge pressure, and provides the rainwater grille with lifting and lifting power by the gantry crane. In this way, a lifting rainwater grille is set for the existing urban flood drainage channels that cannot be widened to carry out lifting and transformation. The lifting height of the rainwater grille is controlled according to the flood control liquid level. The rainwater (spring water) in the flood drainage channel is automatically slag-free while ensuring the flood discharge, thereby improving the slag removal efficiency of the rainwater grille and solving the problem that the rainwater grille cannot be effectively set up under limited construction conditions. Finally, the utility model monitors the water level in real time through the liquid level meter, and realizes the automatic lifting and lowering of the grille net in combination with the drive system, thereby effectively removing the scum in a limited space while ensuring the smooth flow of the flood discharge channel, improving the urban flood control and drainage capacity, and improving the urban water environment quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is the front view of the utility model;

[0021] Figure 2 It is a side view of the utility model (a schematic diagram of the installation state in the channel);

[0022] Figure 3 It is a top view of the utility model (a schematic diagram of the installation state in the channel);

[0023] Figure 4 for Figure 1 A partial enlarged view of the middle A;

[0024] Figure 5 for Figure 1 A partial enlarged view of point B in the middle;

[0025] In the figure: 1-gantry crane; 2-upper rotating shaft; 3-raking rod; 4-counterweight solid structure; 5-motor; 6-V-shaped guide block; 7-positioning plug rod; 8-grid hollow structure; 9-lower fixed shaft; 10-drainage channel; 11-slag bucket; 12-liquid level meter; 13-support rod; 14-transmission chain; 15-sprocket; 16-transmission belt; 17-raking nail; 18-guide groove. DETAILED DESCRIPTION

[0026] The embodiments of the utility model are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the utility model, and cannot be understood as limiting the utility model.

[0027] A lifting rainwater grille for urban flood drainage channels, wherein the lower part of the rainwater grille is immersed in the bottom of the flood drainage channel 10, the middle part of the rainwater grille is positioned and erected on the side bank of the flood drainage channel, the top of the rainwater grille is provided with lifting and hoisting power by a gantry crane 1, and automatic slag discharging units are provided on both sides of the rainwater grille;

[0028] The upper part of the rainwater grid is a solid counterweight structure 4 extending above the flood discharge channel, and the lower part is a hollow grid structure 8 extending to the bottom of the flood discharge channel. The hollow grid structure is cleaned of dirt by the cyclic motion of the sprocket of the automatic slag discharge unit.

[0029] Preferably, the automatic slag discharge unit comprises an upper rotating shaft 2, a lower fixed shaft 9, a transmission chain 14, a rake rod 3 and a motor 5, wherein both ends of the upper rotating shaft and the lower fixed shaft are coaxially connected with a sprocket 15, and a transmission chain is wound around the sprocket to drive the upper rotating shaft and the lower fixed shaft to rotate synchronously;

[0030] The upper rotating shaft rotates and penetrates a solid structure of a counterweight connected to the upper part of the rainwater grille;

[0031] The lower fixed shaft is fixed to and penetrates the hollow grid structure connected to the lower part of the rainwater grille;

[0032] The two ends of the rake rod are pinned to two chains wound on the upper rotating shaft and the lower fixed shaft, and a plurality of rake nails 17 for cleaning dirt in the gaps of the hollow structure of the grid are radially fixed on the rake rod;

[0033] The motor is fixed on the outer shell of the solid structure of the counterweight on the upper part of the rainwater grille, and the power output end of the motor is connected to one end of the upper rotating shaft through a transmission belt 16.

[0034] Preferably, sprockets are coaxially fixed at both ends of the upper rotating shaft, and the sprockets are coaxially rotatably connected at both ends of the lower fixed shaft.

[0035] Preferably, the gantry crane is straddled above the flood discharge channel, and the power output end of the gantry crane is hoisted and attached to the outer shell of the solid structure of the counterweight, and V-shaped guide blocks 6 with an open top set upward are fixedly provided on the side banks of the flood discharge channel in the middle of both sides of the gantry crane; positioning rods 7 are fixedly provided on both sides of the rainwater grille, which are radially overlapped on the inside of the V-shaped guide blocks and provide vertical positioning support for the entire rainwater grille.

[0036] Preferably, support rods 13 are radially fixed to both ends of the lower fixed shaft, and the bottom of the support rods is supported on the bottom of the flood discharge channel.

[0037] Preferably, a guide groove 18 is obliquely opened on the side wall of the flood discharge channel, and the two ends of the fixed shaft under the overlap are lifted, slid and guided in the guide groove.

[0038] Preferably, a liquid level meter 12 is provided at the bottom of the flood discharge channel.

[0039] In addition, in the preferred embodiment of the present invention, a slag bucket 11 can be installed above the drainage channel. The slag bucket is located obliquely below the top of the rainwater grille and is used to hold the dirt dropped from the rake rod.

[0040] In order to more clearly illustrate the specific implementation of the utility model, an embodiment is provided below:

[0041] The utility model discloses a lifting rainwater grille for urban flood drainage channels, which can be installed after lifting and remodeling the existing urban internal flood drainage channels, and specifically includes:

[0042] 1. Channel reconstruction: demolish the walls and top of the existing 10m long flood drainage channel on both sides, cast the reinforced concrete walls on both sides of the channel and embed the steel components of the support device with a load-bearing capacity of 150t. The top of the cast-in-place channel has holes reserved on the top for the installation of the grille.

[0043] 2. Install the grille. Install the rainwater grille with an inclination of 75° according to the width of the channel.

[0044] 3. Install a gantry crane capable of lifting 5 tons. The maximum lifting height of the gantry crane is controlled at 2 meters, and the installation height is set 3 meters above the top of the rainwater grille. A liquid level meter is installed to control the lifting process of the gantry crane.

[0045] 4. The automatic slag-removing rainwater grille is set in the flood discharge channel, and the rainwater grille can be installed on the gantry crane in a lifting manner. The gantry crane drive system is connected to the automatic slag-removing rainwater grille to drive the lifting of the rainwater grille. The liquid level meter is set in the flood discharge channel to monitor the water level in real time. By setting up a lifting rainwater grille, when the water volume is not large, the motor operation drives the transmission chain to move, and then drives the rake rod to circulate and clean the scum accumulated on the hollow structure of the grid; when the water volume is large, the liquid level meter is controlled, and when the liquid level reaches 2.5m (adjustable), the rainwater grille is lifted to ensure the flood discharge channel.

[0046] 5. In addition, the automatic slag remover of the rainwater grille is set to start the slag remover every 2 hours and run for 15 minutes. When the rainwater grille is started, the slag remover of the rainwater grille is turned off.

[0047] Finally, in the present invention, the working principle of the automatic slag removal rainwater grille is:

[0048] An upper rotating shaft is set on the upper part of the rainwater grate to ensure that the rotational power output by the motor acts on the two transmission chains at the same time, ensuring that the rake rod is lifted and lowered in a horizontal posture; on the other hand, a lower fixed shaft is set at the lower part of the rainwater grate to avoid excessive underwater rotating structures causing dirt to be entangled and stuck, and to help the support rod to bear force and avoid damage to the lower fixed shaft and support rod; it should be noted that the support rod should be raised at the bottom of the channel to support the lower fixed shaft, providing sufficient space for the rake rod to circulate.

[0049] Finally, all the unexplained parts of the utility model adopt mature products and mature technical means in the existing technology.

[0050] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in combination with the embodiment or example are included in the embodiment or example of the utility model.

[0051] Although embodiments of the utility model have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the utility model, and that the scope of the utility model is defined by the claims and their equivalents.

Claims

1. A lifting rainwater grille for urban flood drainage channel, characterized in that: The lower part of the rainwater grille is immersed in the bottom of the flood discharge channel, the middle part of the rainwater grille is positioned and erected on the side bank of the flood discharge channel, the top of the rainwater grille is provided with lifting and hoisting power by a gantry crane, and automatic slag discharging units are provided on both sides of the rainwater grille; The upper part of the rainwater grid is a solid counterweight structure extending above the flood discharge channel, and the lower part is a hollow grid structure extending to the bottom of the flood discharge channel. The hollow grid structure is cleaned of dirt by the cyclic motion of the sprocket of the automatic slag discharge unit.

2. The lifting rainwater grille for urban flood drainage channel according to claim 1, characterized in that: The automatic slag discharge unit comprises an upper rotating shaft, a lower fixed shaft, a transmission chain, a rake rod and a motor, wherein both ends of the upper rotating shaft and the lower fixed shaft are coaxially connected with sprockets, and a transmission chain is wound around the sprocket to drive the upper rotating shaft and the lower fixed shaft to rotate synchronously; The upper rotating shaft rotates and penetrates the solid structure of the counterweight connected to the upper part of the rainwater grille; The lower fixed shaft is fixed to and penetrates the hollow grid structure at the bottom of the rainwater grid; The two ends of the rake rod are respectively pinned and connected to two chains wound on the upper rotating shaft and the lower fixed shaft, and a plurality of rake nails for cleaning dirt in the gaps of the hollow structure of the grid are radially fixed on the rake rod; The motor is fixed on the outer shell of the solid counterweight structure on the upper part of the rainwater grille, and the power output end of the motor is connected to one end of the upper rotating shaft through a transmission belt.

3. The lifting rainwater grille for urban flood drainage channel according to claim 2, characterized in that: The two ends of the upper rotating shaft are coaxially fixed with sprockets, and the two ends of the lower fixed shaft are coaxially rotatably connected with the sprockets.

4. The lifting rainwater grille for urban flood drainage channel according to claim 1, characterized in that: The gantry crane is straddled above the flood discharge channel, and the power output end of the gantry crane is hoisted and attached to the outer shell of the solid structure of the counterweight, and V-shaped guide blocks with an open upward setting are fixed on the side banks of the flood discharge channel in the middle of both sides of the gantry crane; positioning rods are fixed on both sides of the rainwater grille, and the positioning rods are radially overlapped inside the V-shaped guide blocks and provide vertical positioning support for the entire rainwater grille.

5. The lifting rainwater grille for urban flood drainage channel according to claim 2, characterized in that: Support rods are radially fixed at both ends of the lower fixed shaft, and the bottoms of the support rods are supported on the bottom of the flood discharge channel.

6. The lifting rainwater grille for urban flood drainage channel according to claim 1, characterized in that: A guide groove is obliquely provided on the side wall of the flood discharge channel, and the two ends of the fixed shaft under the overlap are lifted, slid and guided in the guide groove.

7. The lifting rainwater grille for urban flood drainage channel according to claim 1, characterized in that: A liquid level meter is provided at the bottom of the flood discharge channel.

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