Folding type flood and water drainage well lid

Abstract

The folding type flood and water drainage well lid comprises a well lid body, a hinge piece and a folding rod assembly, the well lid body is rectangular and comprises a first grating well lid body and a second grating well lid body, and the first grating well lid body and the second grating well lid body can move relatively. The hinge piece is located on the first side edge of the well lid body and connected with the first grating well lid body and the second grating well lid body correspondingly, and therefore the first grating well lid body and the second grating well lid body are connected into a whole and can be opened through relative rotation. The folding rod assemblies are located on the second side edge and the third side edge of the well lid body, when the first grating well lid body and the second grating well lid body are overlapped, the folding rod assemblies are in a folded state, and at the moment, the well lid body can cover the opening of the well base and is used for normal drainage. When the first grating well lid body and the second grating well lid body rotate relatively to be opened, the folding rod assembly is in an opened state and can be used in the flood fighting process, the well lid body is erected, the water discharge amount is greatly increased, and water accumulation on a road is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of drainage structures, in particular to a foldable flood drainage manhole cover. Background Art

[0002] Road drainage structure is a common drainage structure, which is mainly used to discharge the accumulated water or rainwater on the road surface into the sewer to reduce the accumulation of water on the road.

[0003] The drainage manhole cover is set at the opening of the manhole seat of the sewer. While the drainage manhole cover plays a certain role in drainage, it also has the function of preventing debris from entering the sewer and preventing pedestrians and vehicles from falling into the manhole seat. However, when there are problems such as heavy rain and floods in the city, the drainage efficiency of the manhole cover is unsatisfactory. The drainage manhole cover in the prior art also has the following defects:

[0004] 1. In the prior art, the drainage manhole cover is usually placed at the opening of the manhole seat, and drainage is achieved by setting a grille structure on the upper side of the manhole cover. The drainage efficiency is not high. When encountering flood season, the drainage grille is easily blocked by impurities, which makes the drainage slow and causes water accumulation on the road. If the drainage manhole cover is opened for flood discharge, garbage and debris are easily allowed to enter the sewer due to the lack of grille filtration, causing blockage, and the opening of the manhole seat is not blocked, which will endanger the safety of pedestrians.

[0005] 2. Existing manhole covers with flood discharge function usually adopt a platform set at the lower end of the manhole cover, and an overflow port is set on the platform. While satisfying the drainage, a lifting structure is set on the platform. This method not only has high requirements on the spatial depth of the manhole seat, but also the use of the platform will make the space in the manhole seat crowded, and at the same time reduce the flow cross-sectional area of ​​the lower manhole seat, affecting the flow rate. Even if the manhole cover is fully opened, the full-through flow effect cannot be achieved. In addition, the overflow port of the platform will be blocked after being placed for a long time, which is inconvenient to clean. Summary of the invention

[0006] The purpose of the utility model is to provide a foldable flood drainage manhole cover in response to the above-mentioned problems and shortcomings, which can be quickly switched to a flood drainage structure during flood prevention, thereby playing a multi-layered role in flood drainage, protection and sewage interception.

[0007] The technical solution of the utility model is achieved in this way:

[0008] The utility model discloses a foldable flood drainage manhole cover, which is characterized by comprising:

[0009] A manhole cover body, which is rectangular, and includes a first grille cover and a second grille cover that are movable relative to each other; a hinge, which is located on a first side of the manhole cover body, and is respectively connected to the first grille cover and the second grille cover, so that the first grille cover and the second grille cover are connected as a whole and can be relatively rotated to open; a folding rod assembly, which has two groups of folding rod assemblies, and the two groups of folding rod assemblies are respectively located on the second side and the third side of the manhole cover body, and the second side and the third side are adjacent to the first side; the folding rod assembly has a folded state and an open state, and when the first grille cover and the second grille cover are superimposed, the folding rod assembly is in the folded state; when the first grille cover and the second grille cover are relatively rotated to open, the folding rod assembly is in the open state.

[0010] In some embodiments, when the first grille manhole cover and the second grille manhole cover are superimposed, the cover body is placed as a whole at the opening of the sewer manhole seat; when the first grille manhole cover and the second grille manhole cover are relatively rotated to open, the two relatively far sides of the first grille manhole cover and the second grille manhole cover are respectively supported on the opposite edges of the opening of the sewer manhole seat.

[0011] In some embodiments, the folding rod assembly includes a plurality of transverse folding rods, one end of which is rotatably connected to the second side or the third side of the first grille manhole cover, and the other end of which is slidably connected to the second grille manhole cover along the length direction of the second side or the third side of the second grille manhole cover.

[0012] In some embodiments, the folding rod assembly includes a plurality of transverse folding rods, which are composed of a first transverse rod and a second transverse rod of two sections of the same length, one end of the first transverse rod is rotatably connected to the second side or the third side of the first grille manhole cover, the other end of the first transverse rod is rotatably connected to one end of the second transverse rod, and the other end of the second transverse rod is rotatably connected to the second side or the third side of the second grille manhole cover, and when the first grille manhole cover and the second grille manhole cover rotate relative to each other, the first transverse rod and the second transverse rod are folded or unfolded around the rotating connection between the two.

[0013] In some embodiments, the transverse folding rods are arranged at intervals on the second side and / or the third side of the manhole cover body, and two adjacent transverse folding rods are staggered front and back along the length direction of the first side of the manhole cover body.

[0014] Furthermore, the folding rod assembly also includes a vertical folding rod, the upper end of which is rotatably connected to the rotating connection between the first cross bar and the second cross bar of the transverse folding rod closest to the first side of the manhole cover body; a plurality of sliding grooves are opened on the vertical folding rod, and the rotating connection between the first cross bar and the second cross bar of other transverse folding rods is provided with a protruding column, which is cooperated and connected with the sliding groove corresponding to the position of the protruding column.

[0015] In some embodiments, the folding rod assembly is disposed on the inner side of the second side and / or the third side of the manhole cover body, or the folding rod assembly is disposed in a recessed position on the outer side of the second side and / or the third side of the manhole cover body.

[0016] In some embodiments, the hinge is a flat hinge, one of the leaves of the flat hinge is connected to the first side of the first grille manhole cover, and the other leaf of the flat hinge is connected to the first side of the second grille manhole cover, and the first grille manhole cover and the second grille manhole cover can be relatively rotated around the rotating axis of the flat hinge to open.

[0017] In some embodiments, the hinge is a circular ring, which passes through the grille holes of the first grille manhole cover and the second grille manhole cover, and is then sleeved on the first side edge of the first grille manhole cover and the first side edge of the second grille manhole cover. The first side edge of the first grille manhole cover and the first side edge of the second grille manhole cover can both rotate relative to each other within the circular ring.

[0018] In some embodiments, the first grille cover and the second grille cover are the same in size and shape.

[0019] The beneficial effects of the utility model are:

[0020] 1. When the first grille manhole cover and the second grille manhole cover are superimposed, the manhole cover body can be placed on the opening of the manhole seat for normal drainage; during flood prevention and rescue, after the first grille manhole cover and the second grille manhole cover of the manhole cover body are relatively rotated and opened, the manhole cover body can be erected, thereby greatly increasing the drainage volume, effectively solving the problem of low drainage efficiency of the manhole cover body in the normal covering mode during the flood season.

[0021] 2. When the first grille manhole cover and the second grille manhole cover are relatively rotated and opened, the folding rod assemblies on both sides thereof are also in an open state. Therefore, the folding rod assemblies can not only enhance the stability of the drainage manhole cover after it is opened, but also prevent debris from entering the sewer.

[0022] 3. Compared with the existing manhole covers with flood discharge function, the foldable flood discharge manhole cover of the utility model has a simple structure, is easy to clean, has a fast flow rate, and can achieve the effects of rapid drainage and filtering impurities.

[0023] The utility model is further described below in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of a three-dimensional structure of a superimposed form of Example 1 of the utility model;

[0025] Figure 2 This is a schematic diagram of the three-dimensional structure of the first embodiment of the utility model in a rotating and opening state;

[0026] Figure 3 This is a schematic diagram of the exploded structure of the folding rod assembly of Example 1 of the present utility model;

[0027] Figure 4 This is a schematic diagram of the connection structure between the folding rod assembly and the manhole cover body of Example 1 of the utility model;

[0028] Figure 5 It is a schematic diagram of the three-dimensional structure of the two-phase superposition form of the utility model example;

[0029] Figure 6 This is a schematic diagram of the three-dimensional structure of the second example of the utility model in a rotating and opening state.

[0030] Reference numerals:

[0031] Manhole cover body 10;

[0032] A first side 101, a second side 102, a third side 103, a concave portion 104, and a convex shaft 105;

[0033] The first grille manhole cover 1;

[0034] Second grille manhole cover 2;

[0035] Casement hinge 3;

[0036] Page 31, rotating shaft 32;

[0037] Ring 4;

[0038] Horizontal folding rod 5;

[0039] A first cross bar 51, a second cross bar 52, a boss 53, and an axial hole 54;

[0040] Vertical folding rod 6;

[0041] Connecting shaft 61 and sliding groove 62. DETAILED DESCRIPTION

[0042] The embodiments of the present invention 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 present invention, and cannot be understood as limiting the present invention.

[0043] In the description of the present invention, it is necessary to understand that the terms "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, features defined as "first" or "second" may explicitly or implicitly include one or more of the features, and are used to distinguish and describe features, without distinction of order or importance.

[0044] In the description of the present invention, unless otherwise specified, “plurality” means two or more.

[0045] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "matching", "connecting", "connection", and "installation" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0046] The foldable flood drainage manhole cover of the present invention is described below in conjunction with the accompanying drawings.

[0047] like Figure 1-Figure 6As shown, the utility model relates to a foldable flood and drainage manhole cover, which includes a manhole cover body 10, a hinge and a folding rod assembly, wherein the manhole cover body 10 is rectangular, and includes a first grille manhole cover 1 and a second grille manhole cover 2 that can move relatively; the hinge is located on the first side 101 of the manhole cover body 10, and the hinge is connected to the first grille manhole cover 1 and the second grille manhole cover 2 respectively, so that the first grille manhole cover 1 and the second grille manhole cover 2 are connected as a whole and can be relatively rotated to open; there are two groups of folding rod assemblies, and the two groups of folding rod assemblies are respectively located on the second side 102 and the third side 103 of the manhole cover body 10, and the second side 102 and the third side 103 are adjacent to the first side 101; the folding rod assembly has a folded state and an open state, when the first grille manhole cover 1 and the second grille manhole cover 2 are superimposed, the folding rod assembly is in a folded state; when the first grille manhole cover 1 and the second grille manhole cover 2 are relatively rotated to open, the folding rod assembly is in an open state.

[0048] It can be understood that the first grille manhole cover 1 and the second grille manhole cover 2 are both rectangular in shape, and both have a rectangular frame surrounded by four sides and grille bars arranged in parallel at intervals in the rectangular frame, so that the rectangular frame forms a frame with multiple grilles, and these grilles are used for drainage. The first grille manhole cover 1 and the second grille manhole cover 2 connected by the hinge can rotate relative to each other, that is, the manhole cover body 10 can have at least two forms, one of which is a superimposed form in which the relative surfaces of the first grille manhole cover 1 and the second grille manhole cover 2 are in contact with each other, such as Figure 1 or Figure 5 As shown, the manhole cover body 10 in this form is basically the same as the appearance of the existing general manhole cover. In this form, the manhole cover body 10 is placed on the opening of the sewer manhole seat as a whole. Its function is the same as that of the existing general manhole cover, which is to play a certain drainage role while preventing debris from entering the sewer and preventing pedestrians and vehicles from falling into the manhole seat; another form is a form in which the first grille manhole cover 1 and the second grille manhole cover 2 are relatively rotated to open, as shown in FIG. Figure 2 or Figure 6As shown, the manhole cover body 10 in this form is in the shape of an inverted V. At this time, the two relatively far sides of the first grille manhole cover 1 and the second grille manhole cover 2 are respectively supported on the opposite edges of the opening of the sewer manhole seat, so that the four faces of the manhole cover body 10 can be drained. The four faces refer to the face where the first grille manhole cover 1 is located, the face where the second grille manhole cover 2 is located, and the face formed by the two groups of folding rod assemblies in the open state. Therefore, when the first grille manhole cover 1 and the second grille manhole cover 2 are superimposed, the manhole cover body 10 can be placed on the opening of the manhole seat for normal drainage; during the flood prevention and rescue process, after the first grille manhole cover 1 and the second grille manhole cover 2 of the manhole cover body 10 are relatively rotated and opened, the manhole cover body 10 can be erected, thereby greatly increasing the drainage volume, effectively solving the problem of low drainage efficiency of the manhole cover body 10 in the normal covering mode during the flood season.

[0049] It can be understood that the primary purpose of setting up the folding rod assembly is to limit the relative rotation opening angle of the first grille manhole cover 1 and the second grille manhole cover 2, so that the two can just support the relative edges of the opening of the sewer manhole seat when they are rotated to the maximum opening angle, and the folding rod assembly in the open state can enhance the stability of the drainage manhole cover after it is opened, ensuring that the first grille manhole cover 1 and the second grille manhole cover 2 will not easily close under the impact of floods; in addition, the folding rod assembly in the open state can also form a railing to prevent debris from entering the sewer.

[0050] The folding rod assembly of the utility model is composed of rods made of hard materials. The connection method thereof only needs to realize that the first grille cover 1 and the second grille cover 2 can be opened or folded synchronously when they are rotated to open or folded, and the specific style and connection method are not specifically limited.

[0051] In some embodiments, the folding rod assembly includes a plurality of transverse folding rods 5, where the plurality is an integer greater than or equal to 2, one end of the transverse folding rods 5 is rotatably connected to the second side edge 102 or the third side edge 103 of the first grille manhole cover 1, and the other end is slidably connected to the second grille manhole cover 2 along the length direction of the second side edge 102 or the third side edge 103 of the second grille manhole cover 2. It can be understood that when the first grille manhole cover 1 and the second grille manhole cover 2 are superimposed, the sliding end of the transverse folding rod 5 slides upward to a position close to the first side edge 101, thereby forming an inclined folding state; and when the first grille manhole cover 1 and the second grille manhole cover 2 are rotated and opened, the sliding end of the transverse folding rod 5 slides downward to a position flush with its rotating end, and at this time, after the manhole cover body 10 is erected, the transverse folding rod 5 is in a horizontal state, which can not only enhance the stability of the drainage manhole cover after opening, but also play a role in preventing debris from entering the sewer.

[0052] Of course, the folding rod assembly can also be of other structural styles, such as Figure 1, Figure 2 , Figure 5 and Figure 6 In the two embodiments shown, the folding rod assembly includes a plurality of transverse folding rods 5. Different from the above, the transverse folding rod 5 is composed of two sections of the same length, the first crossbar 51 and the second crossbar 52. One end of the first crossbar 51 is rotatably connected to the second side 102 or the third side 103 of the first grille manhole cover 1, the other end of the first crossbar 51 is rotatably connected to one end of the second crossbar 52, and the other end of the second crossbar 52 is rotatably connected to the second side 102 or the third side 103 of the second grille manhole cover 2. When the first grille manhole cover 1 and the second grille manhole cover 2 rotate relative to each other, the first crossbar 51 and the second crossbar 52 are folded or unfolded around the rotation connection between the two. The folding rod assembly in these two embodiments includes three transverse folding rods 5. The lengths of each transverse folding rod 5 are different, but the lengths of the first crossbar 51 and the second crossbar 52 of each transverse folding rod 5 are the same, so it can be ensured that each transverse folding rod 5 can be smoothly folded or unfolded when the first grille manhole cover 1 and the second grille manhole cover 2 rotate relative to each other.

[0053] Since the transverse folding rods 5 will fold and close in the same direction when the first grille cover 1 and the second grille cover 2 are relatively folded and stacked, if the distance between two adjacent transverse folding rods 5 is less than the length of the first crossbar 51 or the second crossbar 52 of one of the transverse folding rods 5, interference and jamming will occur during folding and closing. Therefore, in order to prevent the two adjacent transverse folding rods 5 from interfering with each other and causing the first grille cover 1 and the second grille cover 2 to be unable to be folded and stacked, the transverse folding rods 5 of the above-mentioned embodiments are arranged in an intermittent manner on the second side 102 and / or the third side 103 of the cover body 10, and the two adjacent transverse folding rods 5 are staggered front and back along the length direction of the first side 101 of the cover body 10. Figure 4As shown, in this embodiment, a group of folding rod assemblies are respectively provided on the second side 102 and the third side 103 of the manhole cover body 10, and the folding rod assembly of the second side 102 is symmetrically arranged with the folding rod assembly of the third side 103, so the folding rod assembly of one side (the second side 102) is specifically described: the folding rod assembly includes three transverse folding rods 5, and the three transverse folding rods 5 are all installed on the inner side surface of the second side 102, and a convex shaft 105 is provided on the inner side surface, and an axial hole 54 is provided on the corresponding first cross bar 51 or the second cross bar 52, which is connected with the convex shaft 105 through the axial hole 54 so that the first cross bar 51 or the second cross bar 52 can rotate relative to the second side 102, wherein the first transverse folding rod 5 is relatively long and located at the bottom; the third transverse folding rod 5 is relatively short and located at the top; the second transverse folding rod 5 is in the middle and located between the first transverse folding rod 5 and the third transverse folding rod 5. During installation, the first transverse folding rod 5 and the third transverse folding rod 5 are connected to the convex shaft 105 at an inner side surface close to the second side edge 102, and the second transverse folding rod 5 is connected to the convex shaft 105 at a relative distance from the inner side surface of the second side edge 102 by at least the thickness of the first transverse rod 51 plus the second transverse rod 52. In this way, when the middle of the first transverse folding rod 5 is bent upward, it will not interfere with the second transverse folding rod 5, and the two are relatively staggered; and the distance between the third transverse folding rod 5 and the first transverse folding rod 5 is greater than the length of the first transverse rod 51 or the second transverse rod 52 of the first transverse folding rod 5, so the two will not interfere with each other, thereby enabling the first grille manhole cover 1 and the second grille manhole cover 2 to be completely folded and stacked together.

[0054] In order to prevent the grille formed by the transverse folding rod 5 from being too large and unable to prevent debris from entering the sewer, the folding rod assembly also includes a vertical folding rod 6, which is located in the middle of the transverse folding rod 5, and the upper end of the vertical folding rod 6 is rotatably connected to the transverse folding rod 5 closest to the first side 101 of the manhole cover body 10. Specifically, an axis hole 54 is provided at the connection between the first crossbar 51 and the second crossbar 52 of the transverse folding rod 5, and the vertical folding rod 6 is correspondingly provided with a connecting shaft 61 connected to the axis hole 54, so that the first crossbar 51 and the second crossbar 52 can rotate relative to the connecting shaft 61. In addition, a plurality of sliding grooves 62 are also provided on the vertical folding rod 6, and the number of the sliding grooves 62 is equal to the number of the transverse folding rods 5-1. Correspondingly, the other transverse folding rods 5 are provided with a boss 53 at the rotation connection between the first crossbar 51 and the second crossbar 52, and the boss 53 is matched and connected with the sliding groove 62 corresponding to the position of the boss 53.

[0055] In addition to arranging the folding rod assembly on the inner side of the second side 102 and / or the third side 103 of the manhole cover body 10, as shown in FIG. Figure 1The folding rod assembly can also be disposed in the recessed position 104 of the outer side of the second side 102 and / or the third side 103 of the manhole cover body 10, as shown Figure 5 shown.

[0056] The hinged member of the present invention can be of various structural styles, as long as it can allow the first grille manhole cover 1 and the second grille manhole cover 2 to rotate relative to each other. Figure 1 In the example shown, the hinged member in this embodiment is a flat hinge 3, one of the leaves 31 of the flat hinge 3 is connected to the first side 101 of the first grille manhole cover 1, and the other leaf 31 of the flat hinge 3 is connected to the first side 101 of the second grille manhole cover 2, and the first grille manhole cover 1 and the second grille manhole cover 2 can be relatively rotated around the rotation axis 32 of the flat hinge 3 to open. Figure 5 In the example shown, the hinged part of this embodiment is a circular ring 4, which passes through the grille holes of the first grille manhole cover 1 and the second grille manhole cover 2, and is sleeved on the first side edge 101 of the first grille manhole cover 1 and the first side edge 101 of the second grille manhole cover 2. The first side edge 101 of the first grille manhole cover 1 and the first side edge 101 of the second grille manhole cover 2 can both rotate relative to each other in the circular ring 4.

[0057] The first grille manhole cover 1 and the second grille manhole cover 2 of the utility model can be of the same size and shape, so as to ensure that the grilles of the two will not cross each other after being superimposed. However, in some other embodiments, the sizes of the first grille manhole cover 1 and the second grille manhole cover 2 can be different. For example, when the covers are placed at the opening of the well seat after being superimposed, the outer size of the first grille manhole cover 1 or the second grille manhole cover 2 located below can be slightly smaller than the second grille manhole cover 2 or the first grille manhole cover 1.

[0058] Compared with the existing manhole covers with flood discharge function, the foldable flood discharge manhole cover of the utility model has a simple structure, is easy to clean, has a fast flow rate, and can achieve the effects of rapid drainage and filtering impurities.

[0059] The following is a detailed description of a specific embodiment.

[0060] Embodiment 1:

[0061] like Figure 1-4As shown, the foldable flood drainage manhole cover of this embodiment includes a manhole cover body 10, a hinge and a folding rod assembly, wherein the manhole cover body 10 includes a first grille manhole cover 1 and a second grille manhole cover 2 of the same size and shape, and the first grille manhole cover 1 or the second grille manhole cover 2 is a rectangular frame, and four grille bars are arranged in the rectangular frame, and the grille bars are parallel to the short sides of the rectangular frame to divide the rectangular frame into five grilles of the same size. The hinge of this embodiment is a flat hinge 3, one of the leaves 31 of the flat hinge 3 is connected to the first side 101 of the first grille manhole cover 1, and the other leaf 31 of the flat hinge 3 is connected to the first side 101 of the second grille manhole cover 2. The first grille manhole cover 1 and the second grille manhole cover 2 can be relatively rotated and opened around the rotating shaft 32 of the flat hinge 3, and the first side 101 is one of the long sides of the frame. The flat hinge 3 is connected to the first grille manhole cover 1 or the second grille manhole cover 2 by welding.

[0062] The folding rod assembly of this embodiment includes two groups, which are symmetrically arranged on the inner side of the second side 102 and the inner side of the third side 103 of the manhole cover body 10, that is, the two short sides of the rectangular frame. The folding rod assembly includes three transverse folding rods 5 and one vertical folding rod 6, wherein each transverse folding rod 5 is composed of a first crossbar 51 and a second crossbar 52, one end of the first crossbar 51 is rotatably connected to the second side 102 and the third side 103 of the first grille manhole cover 1, the other end of the first crossbar 51 is rotatably connected to one end of the second crossbar 52, and the other end of the second crossbar 52 is rotatably connected to the second side 102 and the third side 103 of the second grille manhole cover 2. When the first grille manhole cover 1 and the second grille manhole cover 2 rotate relative to each other, the first crossbar 51 and the second crossbar 52 are folded or unfolded around the rotation connection between the two.

[0063] When installing the transverse folding rod 5, a convex shaft 105 is provided on the inner side surface of the second side edge 102 and the inner side surface of the third side edge 103 of the first grille manhole cover 1 and the second grille manhole cover 2, and then the first transverse folding rod 5 and the third transverse folding rod 5 are connected to the convex shaft 105 to be close to the inner side surface, and the second transverse folding rod 5 is connected to the convex shaft 105 at a relative distance from the inner side surface by at least the thickness of the first cross bar 51 plus the second cross bar 52, so that the middle of the first transverse folding rod 5 will not interfere with the second transverse folding rod 5 when it is bent upward, and the two are relatively staggered; and the distance between the third transverse folding rod 5 and the first transverse folding rod 5 is greater than the length of the first cross bar 51 or the second cross bar 52 of the first transverse folding rod 5, so the two will not interfere with each other, so that the first grille manhole cover 1 and the second grille manhole cover 2 can be completely folded and stacked together.

[0064] The vertical folding rod 6 is located in the middle of the transverse folding rod 5 and between the first transverse folding rod 5 and the second transverse folding rod 5, that is, the first transverse folding rod 5 and the third transverse folding rod 5 are located outside the vertical folding rod 6, and the second transverse folding rod 5 is located inside the vertical folding rod 6. The upper end of the vertical folding rod 6 is rotatably connected to the third transverse folding rod 5, and the connection between the first transverse rod 51 and the second transverse rod 52 of the third transverse folding rod 5 is provided with an axis hole 54, and the vertical folding rod 6 is correspondingly provided with a connecting shaft 61 connected to the axis hole 54, so that the first transverse rod 51 and the second transverse rod 52 can rotate relative to the connecting shaft 61. In addition, two sliding grooves 62 are provided on the vertical folding rod 6, one is located in the middle of the vertical folding rod 6, and the other is located in the lower part of the vertical folding rod. The first transverse folding rod 5 and the second transverse folding rod 5 are provided with a boss 53 at the rotation connection between the first transverse rod 51 and the second transverse rod 52, wherein the boss 53 of the first transverse folding rod 5 is facing the inner side of the manhole cover body 10, and the boss 53 of the second transverse folding rod 5 is facing the outer side of the manhole cover body 10, the boss 53 of the first transverse folding rod 5 is matched and connected with the lower sliding groove 62, and the boss 53 of the second transverse folding rod 5 is matched and connected with the middle sliding groove 62. Therefore, when the three transverse folding rods 5 are folded or unfolded, the vertical folding rod 6 can also move up or down accordingly.

[0065] When in normal use, such as Figure 1 As shown, at this time, the first grille manhole cover 1 and the second grille manhole cover 2 are superimposed on each other and covered at the opening of the manhole seat, so that the surface of the manhole cover body 10 is flush with the road surface. In this superimposed state, the three horizontal folding rods 5 are all in a folded state, and the vertical folding rod 6 is also in an upward state (the upper end of the vertical folding rod 6 is close to the first side 101). At this time, the manhole cover body 10 can be used for normal drainage, and at the same time has the function of preventing debris from entering the sewer and preventing pedestrians and vehicles from falling into the manhole seat. During the flood prevention and rescue process, the staff can lift the manhole cover body 10 from the opening of the manhole seat, and then relatively rotate the first grille manhole cover 1 and the second grille manhole cover 2 to open it, as shown in FIG. Figure 2As shown, at this time, the three horizontal folding rods 5 are all in the open state, that is, the first horizontal rod 51 and the second horizontal rod 52 are in the same horizontal line, and the vertical folding rod 6 is also moved downward so that its lower end is flush with the lower end of the manhole cover body 10; after rotating and opening, the manhole cover body 10 is erected, that is, the first side 101 is located at the top, and the two relatively distant side edges of the first grille manhole cover 1 and the second grille manhole cover 2 are respectively supported on the opposite edges of the opening of the sewer manhole seat, and the whole is in an inverted V shape, so that the four sides of the manhole cover body 10 can be drained. The four sides refer to the side where the first grille manhole cover 1 is located, the side where the second grille manhole cover 2 is located, and the side formed by the two groups of folding rod assemblies in the open state. The side where the folding rod assembly is located is divided into 7 grilles by the three horizontal folding rods 5 and the vertical folding rods 6, and the size of the grille is not too large, which can play a role in blocking debris from entering the sewer.

[0066] Compared with the existing manhole covers with flood discharge function, the foldable flood discharge manhole cover of this embodiment has a simple structure and does not have redundant structures such as a platform, so it does not require a high spatial depth of the manhole seat. It is suitable for all existing manhole seats and can replace existing conventional manhole covers without construction.

[0067] Embodiment 2:

[0068] like Figure 5-6 As shown, the foldable flood drainage manhole cover of this embodiment also includes a manhole cover body 10, a hinge and a folding rod assembly. The manhole cover body 10 of this embodiment is the same as that of the first embodiment, so it will not be repeated. The hinge of this embodiment is a circular ring 4, which passes through the grille holes of the first grille manhole cover 1 and the second grille manhole cover 2, and is sleeved on the first side edge 101 of the first grille manhole cover 1 and the first side edge 101 of the second grille manhole cover 2. The first side edge 101 of the first grille manhole cover 1 and the first side edge 101 of the second grille manhole cover 2 can both rotate relatively in the circular ring 4. The circular ring 4 is a rectangular sheet body formed by mechanical bending to form a ring body sleeved on the first side edge 101.

[0069] The folding rod assembly of this embodiment also includes two groups, which are symmetrically arranged on the outer side of the second side 102 and the outer side of the third side 103 of the manhole cover body 10, that is, on the two short sides of the rectangular frame. In order to prevent the folding rod assembly from protruding from the outer side of the two short sides and affecting the manhole cover body 10 from being unable to cover the opening of the manhole seat, a recess 104 is concavely provided on the outer side of the short side, and the folding rod assembly is installed in the recess 104 to ensure that the folding rod assembly does not exceed the outer side of the short side. The folding rod assembly also includes three horizontal folding rods 5 and one vertical folding rod 6, and its structure and connection method are the same as those of the first embodiment. The difference is that the convex shaft 105 is arranged on the recess 104, so it will not be repeated.

[0070] When in normal use, such as Figure 5As shown, at this time, the first grille manhole cover 1 and the second grille manhole cover 2 are superimposed on each other and covered at the opening of the manhole seat, so that the surface of the manhole cover body 10 is flush with the road surface. In this superimposed state, the three horizontal folding rods 5 are all in a folded state, and the vertical folding rod 6 is also in an upward state (the upper end of the vertical folding rod 6 is close to the first side 101). At this time, the manhole cover body 10 can be used for normal drainage, and at the same time has the function of preventing debris from entering the sewer and preventing pedestrians and vehicles from falling into the manhole seat. During the flood prevention and rescue process, the staff can lift the manhole cover body 10 from the opening of the manhole seat, and then relatively rotate the first grille manhole cover 1 and the second grille manhole cover 2 to open it, as shown in FIG. Figure 6 As shown, at this time, the three horizontal folding rods 5 are all in the open state, that is, the first horizontal rod 51 and the second horizontal rod 52 are in the same horizontal line, and the vertical folding rod 6 is also moved downward so that its lower end is flush with the lower end of the manhole cover body 10; after rotating and opening, the manhole cover body 10 is erected, that is, the first side 101 is located at the top, and the two relatively distant side edges of the first grille manhole cover 1 and the second grille manhole cover 2 are respectively supported on the opposite edges of the opening of the sewer manhole seat, and the whole is in an inverted V shape, so that the four sides of the manhole cover body 10 can be drained. The four sides refer to the side where the first grille manhole cover 1 is located, the side where the second grille manhole cover 2 is located, and the side formed by the two groups of folding rod assemblies in the open state. The side where the folding rod assembly is located is divided into 7 grilles by the three horizontal folding rods 5 and the vertical folding rods 6, and the size of the grille is not too large, which can play a role in blocking debris from entering the sewer.

[0071] Compared with the existing manhole covers with flood discharge function, the foldable flood discharge manhole cover of this embodiment has a simple structure and does not have redundant structures such as a platform, so it does not require a high spatial depth of the manhole seat. It is suitable for all existing manhole seats and can replace existing conventional manhole covers without construction.

[0072] In the description of this specification, the description with reference to the terms "embodiment", "example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0073] Although the embodiments of the present invention 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 present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A foldable flood drainage manhole cover, characterized in that: include: The manhole cover body is rectangular, and the manhole cover body comprises a first grille manhole cover and a second grille manhole cover that are relatively movable; A hinge, the hinge being located on a first side of the manhole cover body, the hinge being connected to the first grille manhole cover and the second grille manhole cover respectively, so that the first grille manhole cover and the second grille manhole cover are connected as one body and can be relatively rotated to open; A folding rod assembly, wherein two groups of the folding rod assembly are provided, and the two groups of the folding rod assembly are respectively located on the second side and the third side of the manhole cover body, and the second side and the third side are both adjacent to the first side; The folding rod assembly has a folding state and an opening state, and when the first grille manhole cover is superimposed on the second grille manhole cover, the folding rod assembly is in the folding state; When the first grille cover and the second grille cover are relatively rotated to open, the folding rod assembly is in the open state.

2. The foldable flood drainage manhole cover according to claim 1 is characterized in that: When the first grille manhole cover and the second grille manhole cover are superimposed on each other, the whole cover of the manhole cover body is placed at the opening of the sewer manhole seat; when the first grille manhole cover and the second grille manhole cover are relatively rotated to open, the two relatively far sides of the first grille manhole cover and the second grille manhole cover are respectively supported on the relative edges of the opening of the sewer manhole seat.

3. The foldable flood drainage manhole cover according to claim 1 is characterized in that: The folding rod assembly includes a plurality of transverse folding rods, one end of which is rotatably connected to the second side or the third side of the first grille manhole cover, and the other end of which is slidably connected to the second grille manhole cover along the length direction of the second side or the third side of the second grille manhole cover.

4. The foldable flood drainage manhole cover according to claim 1 is characterized in that: The folding rod assembly includes a plurality of transverse folding rods, which are composed of a first cross bar and a second cross bar of two sections of the same length. One end of the first cross bar is rotatably connected to the second side or the third side of the first grille manhole cover, the other end of the first cross bar is rotatably connected to one end of the second cross bar, and the other end of the second cross bar is rotatably connected to the second side or the third side of the second grille manhole cover. When the first grille manhole cover and the second grille manhole cover rotate relative to each other, the first cross bar and the second cross bar are folded or unfolded around the rotating connection between the two.

5. The foldable flood drainage manhole cover according to claim 3 or 4, characterized in that: The transverse folding rods are arranged at intervals on the second side and / or the third side of the manhole cover body, and two adjacent transverse folding rods are staggered front and back along the length direction of the first side of the manhole cover body.

6. The foldable flood drainage manhole cover according to claim 4 is characterized in that: The folding rod assembly also includes a vertical folding rod, the upper end of which is rotatably connected to the rotating connection between the first cross bar and the second cross bar of the transverse folding rod closest to the first side of the manhole cover body; a plurality of sliding grooves are provided on the vertical folding rod, and the rotating connection between the first cross bar and the second cross bar of other transverse folding rods is provided with a protruding column, which is cooperated and connected with the sliding groove corresponding to the position of the protruding column.

7. The foldable flood drainage manhole cover according to claim 1, characterized in that: The folding rod assembly is arranged on the inner side of the second side and / or the third side of the manhole cover body, or the folding rod assembly is arranged in a recessed position on the outer side of the second side and / or the third side of the manhole cover body.

8. The foldable flood drainage manhole cover according to claim 1, characterized in that: The hinge is a flat hinge, one of the leaves of the flat hinge is connected to the first side of the first grille manhole cover, and the other leaf of the flat hinge is connected to the first side of the second grille manhole cover. The first grille manhole cover and the second grille manhole cover can be relatively rotated around the rotating axis of the flat hinge to open.

9. The foldable flood drainage manhole cover according to claim 1, characterized in that: The hinge is a circular ring, which passes through the grille holes of the first grille manhole cover and the second grille manhole cover, and is sleeved on the first side edge of the first grille manhole cover and the first side edge of the second grille manhole cover. The first side edge of the first grille manhole cover and the first side edge of the second grille manhole cover can both rotate relatively within the circular ring.

10. The foldable flood drainage manhole cover according to claim 1, characterized in that: The first grille manhole cover and the second grille manhole cover are the same in size and shape.

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