Inverted siphon culvert trash rack convenient to open

Abstract

The utility model provides an inverted siphon culvert trash rack convenient to open. The inverted siphon culvert trash rack comprises a rack frame and a plurality of rack bars arranged on the rack frame. Wherein the length of a plurality of adjacent grid bars is smaller than that of the other grid bars, so that passing openings are formed, trash holding doors are installed at the passing openings, one ends of the trash holding doors are rotatably installed on the grid frame through pivots, and the other ends of the trash holding doors are detachably connected with the grid bars through pin shafts. According to the trash rack, when a maintainer enters the culvert, only the trash holding door needs to be opened, the trash rack does not need to be integrally disassembled, and the contact position of the trash rack and the hydraulic structure is prevented from being damaged.

Description

Technical Field

[0001] The invention belongs to the technical field of water conservancy projects, and in particular relates to an inverted culvert trash rack which is easy to open. Background Art

[0002] In water conservancy projects, channels often use inverted siphons when crossing roads. Fixed trash racks are usually installed at the inlet and outlet of the inverted siphon to prevent dirt from blocking the inverted siphon culvert. The trash rack is connected to the hydraulic structure by driving expansion bolts into the concrete. When inspecting the inverted siphon culvert, the expansion bolts need to be pulled out, and then the entire trash rack needs to be taken out using lifting equipment, so that maintenance personnel can enter the culvert.

[0003] It can be seen that the traditional trash rack for inverted siphon has the defect of being troublesome to disassemble and assemble, which brings great inconvenience to daily maintenance work. Summary of the invention

[0004] The object of the present invention is to provide an inverted culvert trash rack which is easy to open and can enable maintenance personnel to pass through without disassembling the entire trash rack.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an inverted culvert trash rack that is easy to open, comprising a rack frame and a plurality of bars arranged on the rack frame; wherein the length of a plurality of adjacent bars is smaller than the length of the remaining bars to form a through opening, and a trash door is installed at the through opening, wherein one end of the trash door is pivotally mounted on the rack frame, and the other end is detachably connected to the bars through a pin shaft.

[0006] Furthermore, it also includes an anti-entanglement device for winding around the winding material that cuts off the dirt-blocking door and the upper and lower side bars.

[0007] Further, the anti-entanglement device comprises a knife holder mounted on the fence frame through a screw mechanism, a hand wheel driving the screw mechanism through a gear mechanism, and a cutter mounted on the knife holder;

[0008] The tool holder passes through the through opening in a vertical direction.

[0009] Further, the gear mechanism comprises a first bevel gear mechanism, a spur gear mechanism and a second bevel gear mechanism connected in sequence;

[0010] The first bevel gear mechanism drives the lead screw mechanism, and the hand wheel drives the second bevel gear mechanism.

[0011] Furthermore, the transmission ratio of the gear mechanism is not less than 8.

[0012] Furthermore, the upper and lower edges of the cutter are both provided with blades, and the blades are provided with a plurality of arc-shaped cutting edges arranged at equal distances.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. In the present invention, when maintenance personnel enter the culvert, they only need to open the trash door without dismantling the trash rack as a whole, thereby avoiding damage to the structure at the contact point between the trash rack and the hydraulic structure.

[0015] 2. In the present invention, the trash-blocking door is pivoted and easy to open, and does not require the aid of lifting equipment, which greatly facilitates maintenance operations.

[0016] 3. In the present invention, the anti-entanglement device can help maintenance personnel cut off the entanglements entangled on the bars of the trash rack and the trash door, making it easier to open the trash door. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural stereogram of a preferred embodiment of the present invention in a front view;

[0018] Figure 2 for Figure 1 A structural stereogram of the illustrated embodiment in a rear view perspective;

[0019] Figure 3 for Figure 1 A front view of the structure of the illustrated embodiment;

[0020] Figure 4 for Figure 3 Structural cross-section view along the AA axis;

[0021] Figure 5 for Figure 1 A structural stereogram of the tool holder driving principle in the illustrated embodiment;

[0022] Figure 6 for Figure 1 A structural stereogram of the grille frame and its grille bars in the illustrated embodiment;

[0023] Figure 7 for Figure 1 A structural stereogram of the cutter in the illustrated embodiment;

[0024] Figure 8 It is a cross-sectional view of an inverted siphon culvert using the present invention. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present invention are described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] like Figures 1 to 8 As shown, this embodiment discloses an inverted culvert trash rack that is easy to open, including a frame 1 and a plurality of bars 2 arranged on the frame 1. The frame 1 is made of a channel steel with a width of 100 mm, and its overall width is 2800 mm and its height is 1780 mm. The bars 2 are made of a flat steel with a width of 50 mm, and the bars 2 are fixed to the waterfront side of the frame 1 by welding.

[0027] The length of a portion of the bars 2 is equal to the width of the frame 1. The length of a portion of the adjacent bars 2 near the top is 1548mm. After the left end is fixed to the left side of the frame 1, the right end cannot cover the right side of the frame 1, so a passage A is formed. A pin hole is provided at the right end of this shorter bar 2. A pivot hole is provided on the right side of the frame 1. A trash door 3 is installed at the passage A. The trash door 3 is made of flat steel with the same specifications as the bars 2, and its width is 1300mm. One end of the trash door 3 is rotatably installed in the pivot hole of the frame 1 through a pivot 10, and the other end is detachably connected to the pin hole through a pin shaft 15. By removing the pin shaft 15, the trash door 3 can be turned around the pivot shaft 10 to open, thereby allowing the passage A to pass through completely. After closing the trash door 3, insert the pin shaft 15 to lock it to prevent outsiders from passing through the passage A. As Figure 8 As shown, the position of the through port A should be determined according to the design water level, so that the trash door 3 will not be completely immersed in water at a normal water level, and can avoid being entangled by entanglements above the water surface.

[0028] Since the water contains a lot of strip-shaped dirt, such as water plants, branches, various bags or ropes, etc., they will be blocked when encountering the trash rack, but since these dirt itself is soft in texture, they will be entangled on the bars 2 under the continuous action of the water flow. If the bars on the trash door 3 and the bars on the fence frame 1 are entangled by such dirt, it will affect the opening of the trash door 3. For this reason, in order to be able to remove these entanglements underwater, as a preferred example, the present invention also includes an anti-entanglement device for entanglements that cut off the trash door 3 and the upper and lower bars 2. Specifically, the anti-entanglement device includes a tool holder 4 installed on the fence frame 1 through a screw mechanism, a handwheel 5 that drives the screw mechanism through a gear mechanism, and a cutter 6 installed on the tool holder 4; the tool holder 4 passes through the through port A in the vertical direction. The screw mechanism includes a pair of screws 7 installed on the fence frame 1 and four screw nuts 9 installed on both sides of the tool holder 4.

[0029] The gear mechanism is installed close to the top of the grille 1, so that most of the components are not immersed in water. The gear mechanism includes a first bevel gear mechanism 12, a spur gear mechanism 13 and a second bevel gear mechanism 14 connected in sequence. Two first bevel gear mechanisms 12 are provided and connected by a synchronous shaft 11, which respectively drive each lead screw 7 to rotate. The spur gear mechanism 13 connects the synchronous shaft 11 and the second bevel gear mechanism 14, and the handwheel 5 drives the second bevel gear mechanism 14. When the handwheel 5 is turned, the lead screw 7 can be driven to rotate synchronously through the gear mechanism, thereby driving the tool holder 4 to rise and fall. When the tool holder 4 passes through the through port A, the cutter 6 forms a shear with the bars on the dirt-blocking door 3, thereby cutting off the entanglement. The anti-entanglement device can achieve the purpose of cutting the entanglement completely manually under the condition that it is inconvenient to remove with the help of tools.

[0030] As a preferred example, the transmission ratios of the first bevel gear mechanism 12, the spur gear mechanism 13 and the second bevel gear mechanism 14 are not less than 2, so that the transmission ratio of the gear mechanism is not less than 8, with a larger output torque, making it easier to achieve pure manual cutting.

[0031] As a preferred example, the upper and lower edges of the cutter 6 are provided with blades, and the blades are provided with a plurality of equally spaced arc-shaped cutting edges 6.1. The upper and lower blades can repeatedly cut the windings during the lifting process to avoid the situation where the cutting is not complete at one time. The arc-shaped cutting edges 6.1 can prevent the hard objects from slipping and failing to cut properly when cutting.

[0032] The reason why the present invention is provided with an anti-entanglement device driven by a screw mechanism and a gear mechanism is that the trash rack is immersed in water for a long time, and the maintenance personnel are also in the same environment during maintenance. It is not convenient for the maintenance personnel to carry other tools not related to maintenance, and it is not as easy and convenient to use cutting tools as in the ground environment. Therefore, the anti-entanglement device can drive the cutter 6 to rise and fall by turning the hand wheel 5 to achieve the cutting purpose, and the operation is more convenient. It should be noted that the relevant components in the anti-entanglement device of the present invention are all anti-corrosion components and can adapt to the use in underwater environment.

[0033] It should be noted that the trash door 3 and the hand wheel 5 are both located on the waterfront side to facilitate maintenance personnel to operate, while the knife holder 4 is located on the backwater side to facilitate the cutter 6 to cut off the entanglement from the rear of the grid bar 2.

[0034] The matters not described in detail in the present invention are all known technologies to those skilled in the art.

[0035] In the description of the present invention, it should be understood that the terms "upper", "lower", "left", "right", etc., indicating directions or positional relationships, are based on the directions 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 direction, and a specific direction structure and operation, and therefore, cannot be understood as a limitation of the present invention. In addition, "first" and "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features.

[0036] In the description of the present invention, unless otherwise specified, "plurality" means two or more than two. In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", etc. 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 directly connected, or indirectly connected through an intermediate medium, or it can be the internal connection of two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0037] Finally, it should be noted that the above specific implementation methods are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified and replaced by equivalents without departing from the spirit and scope of the technical solution of the present invention, which should be included in the scope of the claims of the present invention.

Claims

1. An inverted culvert trash rack that is easy to open, comprising a rack frame (1) and a plurality of rack bars (2) arranged on the rack frame (1); characterized in that: The length of some adjacent bars (2) is shorter than the length of the remaining bars (2), thereby forming a through opening (A). A trash door (3) is installed at the through opening (A). One end of the trash door (3) is rotatably mounted on the grille frame (1) via a pivot (10), and the other end is detachably connected to the bar (2) via a pin (15).

2. The trash rack for an inverted culvert that is easy to open according to claim 1, characterized in that: It also includes an anti-entanglement device for winding around the winding material that cuts off the dirt-blocking door (3) and the upper and lower side bars (2).

3. The easy-to-open inverted culvert trash rack according to claim 2, characterized in that: The anti-entanglement device comprises a knife holder (4) mounted on the fence frame (1) via a screw mechanism, a hand wheel (5) driving the screw mechanism via a gear mechanism, and a cutter (6) mounted on the knife holder (4); The tool holder (4) passes through the through opening (A) in a vertical direction.

4. The easy-to-open inverted culvert trash rack according to claim 3, characterized in that: The gear mechanism comprises a first bevel gear mechanism (12), a spur gear mechanism (13) and a second bevel gear mechanism (14) which are connected in sequence; The first bevel gear mechanism (12) drives the lead screw mechanism, and the hand wheel (5) drives the second bevel gear mechanism (14).

5. The easy-to-open inverted culvert trash rack according to claim 4, characterized in that: The transmission ratio of the gear mechanism is not less than 8.

6. The easy-to-open inverted culvert trash rack according to claim 3, characterized in that: The upper and lower edges of the cutter (6) are both provided with blades, and the blades are provided with a plurality of equally spaced arc-shaped cutting edges (6.1).

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