CN216195325U

CN216195325U - Drainage grate and grate blade

Info

Publication number: CN216195325U
Application number: CN202122521020.1U
Authority: CN
Inventors: 刘锡尧; 刘锡禹
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-10-19
Filing date: 2021-10-19
Publication date: 2022-04-05
Anticipated expiration: 2031-10-19

Abstract

The application provides a drainage grate and grate blade, wherein the drainage grate includes: the rainwater collecting device comprises a grate frame, a plurality of grate blades, a rainwater collecting structure and a grate counterweight structure, wherein each grate blade is provided with a rotating shaft so as to be rotationally connected with the grate frame; when rainwater collected in the rainwater collecting structure makes the counter weight of the rainwater collecting structure more than or equal to the counter weight of the grate counter weight structure, the plurality of grate blades rotate anticlockwise around the corresponding rotating shaft, so that the drainage grate is opened, rainwater enters the underground pipeline through the drainage grate, and when the counter weight of the rainwater collecting structure is smaller than the counter weight of the grate counter weight structure, the plurality of grate blades rotate clockwise around the corresponding rotating shaft, so that the drainage grate is closed. This application has the stifled of preventing becoming silted up, prevents empting, advantage such as odor prevention, and the drainage is efficient, and need not the operation that the manual work was opened, has saved the manpower.

Description

Drainage grate and grate blade

Technical Field

The utility model relates to the technical field of drainage, in particular to a drainage grate and grate blades.

Background

Urban inland inundation brings great inconvenience to the lives of residents, and the reasons for the urban inland inundation mainly include two reasons: on one hand, the rapid expansion of the urban scale aggravates the occurrence of a rain island effect, so that local heavy rain with small range and high intensity frequently occurs; on the other hand, the development of urban drainage systems is seriously delayed from the rapid expansion speed of cities, and drainage tools are generally not advanced enough. One of the common drainage tools of the drainage grate, however, the current drainage grate has at least one of the following problems:

1) clogging is easy to occur, leaves, silt and domestic garbage are accumulated, and only regular manual inspection and cleaning can be performed;

2) the drainage capacity is limited, the drainage requirement in case of heavy rainfall cannot be met, and the drainage sectional area of most of the drainage grates is only 45-60% of the drainage grates per se;

3) if the rainfall is large, the drainage grate can be opened only manually, and a large amount of manpower is consumed.

SUMMERY OF THE UTILITY MODEL

Embodiments of the present invention provide a drainage grate and grate vanes to overcome or alleviate the above-mentioned problems.

The technical scheme adopted by the utility model is as follows:

a drainage grate, comprising: the rainwater collecting device comprises a grate frame, a plurality of grate blades, a rainwater collecting structure and a grate counterweight structure, wherein each grate blade is provided with a rotating shaft so as to be rotationally connected with the grate frame; when rainwater collected in the rainwater collecting structure enables the counter weight of the rainwater collecting structure to be larger than or equal to the counter weight of the grate counter weight structure, the plurality of grate blades rotate anticlockwise around the corresponding rotating shafts, so that the drainage grate is opened, rainwater enters an underground pipeline through the drainage grate, and when the counter weight of the rainwater collecting structure is smaller than the counter weight of the grate counter weight structure, the plurality of grate blades rotate clockwise around the corresponding rotating shafts, so that the drainage grate is closed.

Two rotating shafts are arranged on each grate blade, the two rotating shafts are arranged close to the front side of the corresponding grate blade and far away from the rear side of the corresponding grate blade, one rotating shaft is positioned on the left side of the grate blade and is rotationally connected with the left side fixing plate, and the other rotating shaft is positioned on the right side of the grate blade and is rotationally connected with the right side fixing plate;

two first connecting lugs are arranged at the position, close to the rear, of the upper surface of each grate blade, one first connecting lug is close to the left fixing plate, and the other first connecting lug is close to the right fixing plate;

two second connecting lugs are arranged at the position, close to the front, of the upper surface of each grate blade, one second connecting lug is close to the left fixing plate, the other second connecting lug is close to the right fixing plate, and the transverse distance between the two second connecting lugs is larger than that between the two first connecting lugs.

The "number" appearing herein means "two or more", i.e. at least 2.

The drainage grate in the following embodiments of the present application comprises: the rainwater collecting device comprises a grate frame, a plurality of grate blades, a rainwater collecting structure and a grate counterweight structure, wherein each grate blade is provided with a rotating shaft so as to be rotationally connected with the grate frame; when rainwater collected in the rainwater collection structure enables the counter weight of the rainwater collection structure to be larger than or equal to the counter weight of the grate counter weight structure, the plurality of grate blades rotate anticlockwise around the corresponding rotating shafts, so that the drainage grate is opened, rainwater enters an underground pipeline through the drainage grate, and when the counter weight of the rainwater collection structure is smaller than the counter weight of the grate counter weight structure, the plurality of grate blades rotate clockwise around the corresponding rotating shafts, so that the drainage grate is closed, and therefore the rainwater collection structure has the advantages that:

1. the shutter type structure is adopted, the shutter is closed at ordinary times, leaves, silt and domestic garbage can be prevented from entering the shutter type structure, and the shutter type structure has the advantages of silt prevention, toppling prevention, odor prevention and the like.

2. The design of two-layer link mechanism is adopted, the instability of the parallelogram is fully utilized, the louver can be opened quickly in the rainy period by utilizing the counterweight difference of force between rainwater and counterweight, the drainage efficiency is high, the manual opening operation is not needed, and the manpower is saved.

Drawings

Fig. 1A is a schematic perspective view illustrating a drainage grate according to an embodiment of the present disclosure;

FIG. 1B is a second schematic perspective view of a drainage grate according to an embodiment of the present application;

fig. 2A is a schematic structural diagram of the left fixing plate or the right fixing plate in the embodiment of the present application;

fig. 2B is a schematic structural view of a first side plate in the embodiment of the present application;

fig. 2C is a schematic structural diagram of a second side plate in the embodiment of the present application;

FIG. 2D is a schematic structural diagram of a cover plate according to an embodiment of the present disclosure;

FIG. 3A is a schematic structural diagram of the first suspension plate according to the embodiment of the present application;

FIG. 3B is a second schematic structural view of the first suspension plate according to the embodiment of the present application;

FIG. 3C is a schematic structural view of a third suspension bar according to an embodiment of the present application;

FIG. 3D is a schematic view of a first suspension support bar according to an embodiment of the present disclosure;

fig. 3E is a second schematic structural view of the first suspension support rod in the embodiment of the present application;

FIG. 4 is a schematic structural view of the second suspension plate according to the embodiment of the present application;

FIG. 5A is a schematic view of a composite suspension strut according to an embodiment of the present disclosure;

fig. 5B is a second schematic structural diagram of a suspension support rod of a composite structure in an embodiment of the present application.

Detailed Description

In order to make the technical problems, technical solutions and advantages of the present invention more apparent, the following detailed description is given with reference to the accompanying drawings and specific embodiments.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

The drainage grate in the following embodiment of the application comprises a grate frame, a plurality of grate blades, a rainwater collection structure and a grate counterweight structure, wherein each grate blade is provided with a rotating shaft so as to be rotationally connected with the grate frame; when rainwater collected in the rainwater collection structure enables the counter weight of the rainwater collection structure to be larger than or equal to the counter weight of the grate counter weight structure, the plurality of grate blades rotate anticlockwise around the corresponding rotating shafts, so that the drainage grate is opened, rainwater enters an underground pipeline through the drainage grate, and when the counter weight of the rainwater collection structure is smaller than the counter weight of the grate counter weight structure, the plurality of grate blades rotate clockwise around the corresponding rotating shafts, so that the drainage grate is closed, and therefore the rainwater collection structure has the advantages that:

The following embodiments exemplarily illustrate the drainage grate provided in the embodiments of the present application.

Fig. 1A is a schematic perspective view illustrating a drainage grate according to an embodiment of the present disclosure; FIG. 1B is a second schematic perspective view of a drainage grate according to an embodiment of the present application; as shown in fig. 1A, 1B, the drainage grate comprises: the rainwater collecting device comprises a grate frame 101, a plurality of grate blades 102, a rainwater collecting structure 103 and a grate counterweight structure 104, wherein the rainwater collecting structure 103 is positioned below the grate blades 102, and the grate counterweight structure 104 is positioned below the rainwater collecting structure 103.

Wherein, the grate frame 101 includes: a left fixing plate 111 and a right fixing plate 121 which are transversely arranged oppositely, and a front fixing plate and a rear fixing plate (not shown) which are longitudinally arranged oppositely. Here, since the grate blades 102 are not provided on the front fixing plate and the rear fixing plate, they may be omitted in some application scenarios and may be replaced by a ground structure.

Two rotating shafts 112 are arranged on each grate blade 102, the two rotating shafts 112 are arranged at positions close to the front side of the corresponding grate blade 102 and far away from the rear side of the corresponding grate blade 102, one rotating shaft 112 is positioned at the left side of the grate blade 102 and is rotatably connected with the left side fixing plate 111, and the other rotating shaft 112 is positioned at the right side of the grate blade 102 and is rotatably connected with the right side fixing plate 121.

Through the arrangement positions of the two rotating shafts 112 close to the front side of the corresponding grate blade 102 and far away from the rear side of the corresponding grate blade 102, rear and front position points are formed on each grate blade, which is equivalent to that two lever supporting points are arranged for each grate blade 102, so that the two sides of the front and the rear of the grate blade 102 can rotate anticlockwise or clockwise when a counterweight difference is formed, and the drainage grate is in an open state or a closed state.

Illustratively, the rotating shaft 112 on each grate blade 102 is preferably integrally formed with the body of the grate blade 102, thereby ensuring the overall rigidity of the grate blade 102.

Illustratively, the rotating shaft 112 is circular in cross-section; of course, alternatively, the cross-section of the rotating shaft 112 is kidney-shaped.

Two first connecting lugs 122 are arranged at the position, close to the rear, of the upper surface of each grate blade 102, wherein one first connecting lug 122 is close to the left fixing plate 111, and the other first connecting lug 122 is close to the right fixing plate 121.

Illustratively, the first connecting lug 122 is provided with a through hole, and the shape of the through hole is not particularly limited, so as to be connected with the first suspension rod 133 by means of a pin joint, thereby reducing the complexity of the structural design and the difficulty of construction.

Two second connecting lugs 132 are arranged at the position, close to the front, of the upper surface of each grate blade 102, one second connecting lug 132 is close to the left fixing plate 111, the other second connecting lug 132 is close to the right fixing plate 121, and the transverse distance between the two second connecting lugs 132 is greater than the transverse distance between the two first connecting lugs 122, so that the free rotation of the grate blades is facilitated, and the situation that the movable block is dead can not occur. For example, the first suspension rod 133 and the second suspension rod 124 can rotate freely, and the situation of recognizing the movable block can not occur.

Specifically, as previously described, the grate vanes 102 may rotate either counter-clockwise or clockwise.

Illustratively, the second engaging lug 132 is also provided with a through hole, and the shape of the through hole is not particularly limited, so as to be connected with the second suspension rod 124 by means of a pin joint, thereby reducing the complexity of the structural design and the difficulty of construction.

In this embodiment, the rainwater collection structure 103 includes: the rain collector 113, the first hanging plate 123 and the first hanging rods 133 are positioned at the left and right sides of the rain collector 113, and the rain collector 113 is carried on the first hanging plate 123.

It should be noted here that in the embodiment of the present application, the rain collector 113 is a larger structural body, and in other embodiments, there may be a plurality of smaller structural bodies, each of which is equivalent to one rain collector 113, for example, there are three rain collectors 113, one of which is located in the middle of the first hanging plate 123, and the other two rain collectors 113 are respectively disposed near the two ends of the first hanging plate 123.

Illustratively, the rain collector 113 is used for receiving part of rainwater, and the shape of the rain collector 113 may be customized according to application requirements, and may also be cylindrical or rectangular. In addition, the bottom surface of the rain collector 113 may be a flat surface or an inclined surface. When the bottom surface of the rain collector 113 is an inclined surface, the speed of flowing water can be accelerated, impurities can be discharged along the inclined surface, and the cleaning efficiency of the rain collector 113 is improved.

In the rainwater collecting structure 103, the lower end of any first hanging rod 133 located at the left side of the rainwater collector 113 is connected to the left side of the first hanging plate 123, and the upper end thereof is connected to the first connecting lug 122 close to the left fixing plate 111. In the rainwater collecting structure 103, the lower end of any first hanging rod 133 located at the right side of the rainwater collector 113 is connected to the right side of the first hanging plate 123, and the upper end thereof is connected to the first connecting lug 122 close to the right fixing plate 121. In this way, the plurality of first hanging rods 133 are respectively arranged on the left and right sides of the rain collector 113, so that the rain collector 113 is fixed from the left and right sides, and the rain collector 113 is stably fixed on the first hanging plate 123.

Illustratively, the connection, preferably the movable connection, of the first hanging bar 133 with the first connecting lug 122 cooperates with the rotation of the grate blades 102.

Illustratively, the shape and number of the first hanging rods 133 are not particularly limited as long as they can cooperate with the first hanging plate 123 to realize the bearing of the rain collector 113.

Illustratively, the shape of the first hanging plate 123 is not particularly limited as long as it can cooperate with the first hanging rod 133 to carry the rain collector 113.

The grate counterweight structure comprises: a second suspension plate 114, and a plurality of second suspension rods 124 with lower ends connected to the left and right sides of the second suspension plate 114.

In the grate counterweight structure, any second suspension rod 124 positioned on the left side is connected with a second connecting lug 132 close to the left fixing plate 111, and any second suspension rod 124 positioned on the right side is connected with a second connecting lug 132 close to the right fixing plate 121.

Illustratively, the connection, preferably the articulation, of the second hanger bar 124 to the second engaging lug 132.

In addition, as the transverse distance between the second connecting lugs 132 is larger than the transverse distance between the two first connecting lugs 122 and is matched with the connection relation between the first hanging rod 133 and the second hanging rod 124, a gap is formed between the grate blades under the condition that the grate blades do not need to rotate when the rain is low, and the water is convenient to pass through.

Of course, in other embodiments, if it is required that the grate blades do not rotate, and no or small gaps are formed between the grate blades, an elongated hole may be formed in the grate blades, so that the second hanging rod 124 passes through the elongated hole to be connected with the second coupling lug 132, and water is supplied through the elongated hole.

Illustratively, either one of the left fixing plate 111 and the right fixing plate 121 is a fixing plate of a composite structure, and the fixing plate of the composite structure includes: the cover plate (comprising an upper cover plate and a lower cover plate), two or more first side plates and two or more second side plates.

Fig. 2A is a schematic structural diagram of the left fixing plate or the right fixing plate in the embodiment of the present application; fig. 2B is a schematic structural view of a first side plate in the embodiment of the present application; fig. 2C is a schematic structural diagram of a second side plate in the embodiment of the present application; FIG. 2D is a schematic structural diagram of a cover plate according to an embodiment of the present disclosure;

as shown in fig. 2A, a second side plate 1113 is arranged on the inner side and the outer side of the fixed plate of the composite structure; between the inner side and the outer side of the fixing plate of the composite structure, the first side plate 1112 and the second side plate 1113 are arranged at an interval, so that the through hole on the cover plate is clamped with the tooth structure.

As shown in fig. 2D, the cover plate is provided with a through hole; as shown in fig. 2B, the upper and lower end surfaces of each first side plate 1112 are provided with a plurality of protruding tooth structures; the tooth structure is matched with the through hole in shape, as shown in fig. 2D and 2B, the tooth structure is similar to a convex shape, and the through hole matched with the tooth structure is a long through hole, so that the tooth structure is embedded into the through hole matched with the tooth structure. In addition, the strength of the attachment point of the cover plate to the first side plate 1112 is increased by this protruding tooth structure.

As shown in fig. 2C, the upper and lower end surfaces of each second side plate 1113 are planar structures, so that when the second side plate 1112 is disposed at an interval, one second side plate 1113 can be clamped between the two first side plates 1112, and then the structural strength of the fixing plate of the composite structure is ensured through the engaging relationship between the tooth structure and the through hole, which is convenient for assembly and maintenance.

As shown in fig. 2B and 2C, the first side plate 1112 and the second side plate 1113 are further provided with a plurality of through holes, and the rotating shaft is inserted into the through holes to rotatably connect the rotating shaft and the fixing plate of the composite structure.

Similarly, for the front fixing plate and the rear fixing plate, the structure thereof is similar to the left fixing plate and the right fixing plate, and the description thereof is omitted.

Illustratively, the first suspension plate is a frame structure, and the frame structure comprises a plurality of third suspension rods and a first suspension support rod.

FIG. 3A is a schematic structural diagram of the first suspension plate according to the embodiment of the present application; FIG. 3B is a second schematic structural view of the first suspension plate according to the embodiment of the present application; FIG. 3C is a schematic structural view of a third suspension bar according to an embodiment of the present application; fig. 3D is a first schematic structural diagram of the first suspension support rod in the embodiment of the present application, and fig. 3E is a second schematic structural diagram of the first suspension support rod in the embodiment of the present application.

As shown in fig. 3A to 3E, the first suspension plate is a frame structure, the frame structure includes a plurality of third suspension rods 1231 and first suspension support rods 1232 respectively located at the left side and the right side of the frame structure, and the plurality of third suspension rods 1231 are transversely connected between the first suspension support rods 1232 at the left side and the right side, so that the third suspension rods 1231 are arranged between the first suspension support rods 1232 at the left side and the right side in the left-to-right direction, and the structural stability of the first suspension plate is increased.

The specific forms of the third hanging rod 1231 and the first hanging support rod 1232 are not limited as long as they can function to stably support the rain collectors.

Referring to fig. 3C and 3D, the third suspension rod 1231 has clamping ends at both ends thereof, and the first suspension support rod 1232 has a plurality of clamping through holes, so that the third suspension rod 1231 is stably connected to the first suspension support rod 1232 by clamping the clamping ends in the corresponding clamping through holes.

Referring to the above 3D, the first suspension support rod 1232 is also provided with a tooth structure, and the tooth structure corresponds to the position of the clamping through hole on the first suspension support rod 1232, so that the structural reinforcement is provided at each connection point of the first suspension support rod 1232 and the third suspension rod 1231, and the structural stability and the connection strength of the connection points are ensured.

Exemplarily, the second suspension plate is a frame structure, and the frame structure includes a plurality of fourth suspension bars and a second suspension support bar.

FIG. 4 is a schematic structural view of the second suspension plate according to the embodiment of the present application; the structure of the fourth suspension bar 1141 is the same as that of the third suspension bar; the second hanging support bar 1142 has the same structure as the first hanging support bar.

The second suspension plate is a frame structure body, the frame structure body comprises a plurality of fourth suspension rods 1141 and second suspension support rods 1142 respectively positioned on the left side and the right side of the frame structure body, and the plurality of fourth suspension rods 1141 are transversely connected between the second suspension support rods 1142 on the left side and the right side, so that the fourth suspension rods 1141 are arranged between the second suspension support rods 1142 on the left side and the right side in the direction from the left side to the right side, and the structural stability of the second suspension plate is improved.

The specific shapes of the fourth suspension bar 1141 and the second suspension support bar 1142 are not limited as long as they can serve as a part of the counter weight of the grate blade.

The fourth suspension rod 1141 has clamping ends at both ends, and the second suspension support rod 1142 has a plurality of clamping through holes, through which the clamping ends are clamped in the corresponding clamping through holes, thereby realizing the stable connection of the fourth suspension rod 1141 and the second suspension support rod 1142.

The second hanging support bar 1142 is also provided with a tooth structure corresponding to the clamping through hole at the second hanging support bar 1142, so that the structural reinforcement at each connecting point of the second hanging support bar 1142 and the fourth hanging bar 1141 is equivalent to ensure the structural stability and the connection strength at the connecting points.

Illustratively, any of the first and second suspension support bars 1142 is a suspension support bar of a composite structure.

FIG. 5A is a schematic view of a composite suspension strut according to an embodiment of the present disclosure; FIG. 5B is a second schematic view of the composite suspension strut in the embodiment of the present application; as shown in fig. 5A and 5B, the suspension support rod of the composite structure includes two suspension supports 12321 having a plurality of first suspension through holes; for any type of the plurality of third suspension bars 1231 and the plurality of fourth suspension bars 1142, it passes through the plurality of first suspension through holes a to be connected between the first suspension support bars 1232 on the left and right sides, or the plurality of fourth suspension bars 1142 are transversely connected between the second suspension support bars on the left and right sides. The first hanging through hole serves as the clamping through hole.

Further, as shown in fig. 5A, each of the suspension support rods of the composite structure further includes a plurality of second suspension through holes B; and for any suspension connecting rod of the first suspension rod and the second suspension rod, the lower end of the suspension connecting rod is provided with a third suspension through hole C, and when the first suspension rod is connected to the first suspension plate and the second suspension rod is connected to the second suspension plate, the third suspension through hole C is positioned between the two second suspension through holes B and forms a through hole structure. And the second hanging through hole and the third hanging through hole are fixed together in a pin joint mode, so that the stability and the strength of the structure are ensured.

Based on the above drawings, it can be seen that, since the transverse distance between the two second connecting lugs 132 is greater than the transverse distance between the two first connecting lugs 122, the rainwater collecting structure can be nested in the grate counterweight structure, and the rotating shaft is arranged close to the front side of the corresponding grate blade and far away from the rear side of the corresponding grate blade, so that the front side and the rear side of the grate blade are ensured to rotate anticlockwise or clockwise when a counterweight difference is formed, and the drainage grate is in an open state or a closed state.

In addition, the positions of the rain collectors 113 and the counter weights placed by the grate weight structure 104 are not particularly limited, for example, if the rain collectors 113 are placed in the middle of the first hanging plate 123, the counter weights can be placed near both ends of the second hanging plate 114; if rain containers 113 are placed near both ends of the first hanger plate 123, a weight may be in the middle of the second hanger plate 114. This is by way of example only and not by way of limitation.

In the above embodiment, the two rotation shafts are disposed close to the front side of the corresponding grate blade and far from the rear side of the corresponding grate blade to form a lever structure with a preset force-to-arm ratio, so that in rainy days, the drainage grate can be quickly and automatically opened under the action of a counterweight difference (the counterweight of the rainwater collection structure is greater than or equal to that of the grate counterweight structure, also called a positive counterweight difference), and when rainfall is small or rain stops, the drainage grate can be quickly and automatically closed under the action of a counterweight difference (the counterweight of the rainwater collection structure is smaller than that of the grate counterweight structure, also called a negative counterweight difference).

In an application scene, calculating a force-arm ratio according to precipitation intensity grade division standards, the drainage area of a single drainage grate and the number of grate blades, wherein in a specific scene, for example, the force-arm ratio is 3: 10, thereby ensuring that the drain grate can be automatically opened or closed quickly.

Further, in the above embodiment, the first and second coupling lugs have a predetermined orientation angle, so that the grate blade rotates in a counterclockwise or clockwise direction. For example, the included angle between the second connecting lug and the grate blade is an acute angle, so that the orientation angle of the second connecting lug is an acute angle, the grate blade is convenient to have a large rotation range during rotation, the mechanical blocking condition is avoided, and a gap which is convenient for water passing is formed between the grate blades.

Alternatively, in other embodiments, the included angle between the second engaging lug and the grate blade may be a right angle, as long as the grate blade is ensured to rotate when rotating, and the mechanical locking condition is not generated.

Further, in one embodiment, in order to facilitate rainwater to flow into the rainwater collector quickly, a plurality of rainwater passing through holes are formed on at least part of the grate blades, so that the opening speed of the drainage grate is increased. For example, a plurality of grate blades above the rain collector are provided with rain through holes, and a plurality of grate blades on the left side and the right side above the rain collector are provided with no rain through holes. Of course, it should be noted here that, according to a specific application scenario, each perforated strainer blade may also be provided with a rain through hole.

In addition, the size and the density of the through holes for passing rain are flexibly set according to application scenes, for example, in order to meet the requirement of water passing speed, the diameter of the through holes can be larger, and the density can be higher.

Further, in one embodiment, in order to increase the closing speed of the drainage grate, the rain collector is provided with water leakage through holes, so that the water in the drainage grate can be effectively leaked away when the rainfall is small or the rain stops, and the drainage grate can be closed quickly.

Further, in an embodiment, the drainage grate further comprises a floating water level sensor and a warning lamp, the floating water level sensor is arranged in the rainwater collection structure, the warning lamp is arranged on the grate frame, and when the water level in the rainwater collection structure reaches a value that the floating water level sensor generates an effective electric signal to be output, the warning lamp is triggered to be turned on.

Specifically, the sensor mainly comprises a magnetic reed switch and a floating ball, wherein a magnetic material is arranged in the ball, the magnetic reed switch is arranged in a closed non-conductive metal pipe or a closed non-conductive plastic pipe, then a guide pipe penetrates through the floating ball with the magnetic material, the floating ball and the magnetic reed switch are controlled to be in corresponding positions by a fixed double ring, and when the floating ball rises or falls along with liquid, a contact close to the magnetic reed switch in the ball is utilized to generate switching action so as to control or indicate the liquid level. That is, the floating ball is switched on when approaching the magnetic reed switch and switched off when leaving.

After the floating water level sensor is connected in series to the warning light circuit, the warning light circuit can be automatically closed and the warning light can be turned on when the water level in the rainwater collecting device reaches a certain degree.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

The above-mentioned embodiments are only specific embodiments of the present invention, which are used for illustrating the technical solutions of the present invention and not for limiting the same, and the protection scope of the present invention is not limited thereto, although the present invention is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: any person skilled in the art can modify or easily conceive the technical solutions described in the foregoing embodiments or equivalent substitutes for some technical features within the technical scope of the present disclosure; such modifications, changes or substitutions do not depart from the spirit and scope of the embodiments of the present invention, and they should be construed as being included therein. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A drain grate, comprising: the rainwater collecting device comprises a grate frame, a plurality of grate blades, a rainwater collecting structure and a grate counterweight structure, wherein each grate blade is provided with a rotating shaft so as to be rotationally connected with the grate frame; when rainwater collected in the rainwater collecting structure enables the counter weight of the rainwater collecting structure to be larger than or equal to the counter weight of the grate counter weight structure, the plurality of grate blades rotate anticlockwise around the corresponding rotating shafts, so that the drainage grate is opened, rainwater enters an underground pipeline through the drainage grate, and when the counter weight of the rainwater collecting structure is smaller than the counter weight of the grate counter weight structure, the plurality of grate blades rotate clockwise around the corresponding rotating shafts, so that the drainage grate is closed.

2. The drainage grate of claim 1, wherein the grate frame comprises: the left fixing plate and the right fixing plate are transversely arranged oppositely;

each grate blade of the grate blade is provided with two rotating shafts, the two rotating shafts are arranged close to the front sides of the corresponding grate blades, one rotating shaft is positioned on the left side of the grate blade and is rotationally connected with the left side fixing plate, and the other rotating shaft is positioned on the right side of the grate blade and is rotationally connected with the right side fixing plate;

3. The drainage grate of claim 2 wherein the rain water collection structure is located below a plurality of grate blades, the rain water collection structure comprising: the rain collector comprises a rain collector, a first hanging plate and a plurality of first hanging rods positioned on the left side and the right side of the rain collector, wherein the rain collector is borne on the first hanging plate; wherein:

the lower end of any first suspension rod positioned on the left side of the rain collector is connected with the left side of the first suspension plate, and the upper end of the first suspension rod is connected with a first connecting lug close to the left side fixing plate;

the lower end of any first hanging rod positioned on the right side of the rain collector is connected with the right side of the first hanging plate, and the upper end of the first hanging rod is connected with the first connecting lug close to the right side fixing plate.

4. The drainage grate as claimed in claim 3, wherein the grate weight structure comprises: the second hangs the board, the lower extreme is connected hang the board left and right sides a plurality of second and hang the pole, wherein:

any second suspension rod positioned on the left side is connected with a second connecting lug close to the left side fixing plate; and any second suspension rod positioned on the right side is connected with a second connecting lug close to the right side fixing plate.

5. The drainage grate of claim 2, wherein at least one of the left and right fixing plates is a fixing plate of a composite structure, the fixing plate of the composite structure comprising: the first curb plate of apron, two or more than two second curb plates, wherein:

the cover plate is provided with a through hole;

the upper end surface and the lower end surface of each first side plate are provided with a plurality of convex tooth structures;

the upper end surface and the lower end surface of each second side plate are of a plane structure;

a second side plate is arranged on the inner side and the outer side of the fixing plate of the composite structure;

and between the inner side and the outer side of the fixing plate of the composite structure, the first side plate and the second side plate are arranged at intervals, so that the through hole in the cover plate is clamped with the tooth structure.

6. The draining grate according to claim 3, wherein the rain collector is provided with water leaking holes and/or part of the grate blades are provided with more than 2 rain passing holes.

7. The drainage grate of claim 4, wherein the first hanging plate is a frame structure, the frame structure comprises a plurality of third hanging rods and first hanging support rods respectively positioned at the left side and the right side of the frame structure, and the plurality of third hanging rods are transversely connected between the first hanging support rods at the left side and the right side.

8. The drainage grate of claim 7, wherein the second hanging plate is a frame structure, the frame structure comprises a plurality of fourth hanging rods and second hanging support rods respectively positioned at the left side and the right side of the frame structure, and the plurality of fourth hanging rods are transversely connected between the left side and the right side of the second hanging support rods.

9. The drainage grate of claim 8, wherein any one of the first and second hanging support rods is a composite hanging support rod, and the composite hanging support rod comprises two hanging support members having a plurality of first hanging through holes; for any type of the suspension cross bar among the plurality of third suspension bars and the plurality of fourth suspension bars, it passes through the plurality of first suspension through holes to be connected between the first suspension support bars on the left and right sides, or the plurality of fourth suspension bars are transversely connected between the second suspension support bars on the left and right sides.

10. The drainage grate of claim 9, wherein the suspension support bars of the composite structure comprise each suspension support bar further comprising a plurality of second suspension through holes; and for any suspension connecting rod of the first suspension rod and the second suspension rod, the lower end of the suspension connecting rod is provided with a third suspension through hole, and when the first suspension rod is connected to the first suspension plate and the second suspension rod is connected to the second suspension plate, the third suspension through hole is positioned between the two second suspension through holes and forms a through hole structure.

11. The drainage grate of claim 9, further comprising a floating water level sensor and a warning light, wherein the floating water level sensor is arranged in the rainwater collection structure, the warning light is arranged in the grate frame, and the warning light is triggered to light when the water level in the rainwater collection structure reaches a value that the floating water level sensor generates an effective electric signal to be output.

12. The grate blade is characterized in that two rotating shafts are arranged on the grate blade, the two rotating shafts are arranged close to the front side of the corresponding grate blade and far away from the rear side of the corresponding grate blade, one rotating shaft is positioned on the left side of the grate blade and is rotationally connected with a left side fixing plate of a grate frame, and the other rotating shaft is positioned on the right side of the grate blade and is rotationally connected with a right side fixing plate of the grate frame;

two first connecting lugs are arranged at the position, close to the rear, of the upper surface of each grate blade, one first connecting lug is close to the left fixing plate, and the other first connecting lug is close to the right fixing plate; two second connecting lugs are arranged at the position, close to the front, of the upper surface of each grate blade, one second connecting lug is close to the left fixing plate, the other second connecting lug is close to the right fixing plate, and the transverse distance between the two second connecting lugs is larger than that between the two first connecting lugs.