A late adjustable hydraulic automatic flap gate

Abstract

The application provides a late adjustable hydraulic automatic flap gate, which comprises a gate body, an opening and closing mechanism, a piston cylinder and a transmission assembly, wherein the opening and closing mechanism is used for driving the gate body to open and close; the piston cylinder is vertically arranged, the bottom of the piston cylinder is connected with an upstream river channel through a pipeline, a piston and a plug rod are arranged in the piston cylinder, the plug rod is above the piston and can abut against the piston, the plug rod is connected with the transmission assembly through a connecting rod, the transmission assembly is also connected with the opening and closing mechanism, and the opening and closing mechanism can be driven to operate according to the horizontal movement of the plug rod. The flap gate is based on the principle of a communicating vessel, and the automatic adjustment and control of the opening and closing of the flap gate or the size of the opening degree can be realized according to the change of the water level of the upstream river channel. On this basis, the initial conditions of the gate can be changed only by simply adjusting the height position of the plug rod connecting point, so that the requirement of flexible adjustment and control in the later use can be met.

Description

Technical Field

[0001] This invention belongs to the field of gate technology, specifically relating to a post-adjustable hydraulic automatic flap gate. Background Technology

[0002] Hydraulic automatic gates are gates that rely solely on hydraulic power to automatically adjust their opening size based on upstream water levels. Among these, flap gates are the most common type. Typical hydraulic automatic flap gates primarily rely on the downward pressure exerted by the upstream river on the gate body. When the upstream water level rises and the downward pressure on the gate exceeds its supporting force, the gate flips open under the water pressure; conversely, when the upstream water level is low, the flap gate flips back up.

[0003] Currently, hydraulic automatic flap gates generally have a common problem: once the initial control conditions of the automatic gate (the water pressure at which the gate is forced open) are set during the initial construction, it is difficult to modify or change them during later use. Therefore, such hydraulic automatic gates can often only be used in projects with relatively simple operating conditions. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a post-adjustable hydraulic automatic flap gate to solve the problem of adjusting initial conditions during the later use of hydraulic automatic gates.

[0005] The present invention achieves the above-mentioned technical objectives through the following technical means.

[0006] A post-adjustable hydraulic automatic flap gate includes a gate body, an opening and closing mechanism, a piston cylinder, and a transmission assembly. The opening and closing mechanism is used to drive the gate body to open and close. The piston cylinder is vertically arranged, and its bottom is connected to the upstream river channel through a pipe. The piston cylinder contains a piston and a piston rod, with the piston rod positioned above the piston and capable of contacting each other. The piston rod is connected to the transmission assembly through a connecting rod. The transmission assembly is also connected to the opening and closing mechanism and can drive the opening and closing mechanism to operate according to the translational movement of the piston rod.

[0007] Furthermore, the position of the connection point between the stopper rod and the connecting rod can be adjusted vertically.

[0008] Furthermore, the opening and closing mechanism includes a slide rail, which is horizontally arranged and perpendicular to the door's pivot axis. A sliding seat is slidably connected to the slide rail, and the sliding seat is connected to the door body through a diagonal brace. The two ends of the diagonal brace are respectively hinged to the sliding seat and the door body. The sliding seat is driven by a screw, which is connected to the transmission assembly.

[0009] Furthermore, the transmission assembly includes a transmission box and a drive shaft. The drive shaft is parallel to the door's rotating shaft. The screw is connected to the drive shaft via a commutator. The transmission box is connected to both the connecting rod and the drive shaft, and can drive the drive shaft to rotate according to the translational movement of the piston rod.

[0010] Furthermore, the sliding seat includes an outer sliding body and an inner sliding body, which are slidably connected to the slide rail. The top of the outer sliding body is connected to the diagonal brace via a hinge seat, and the middle of the inner sliding body is provided with a threaded hole that mates with the screw. The outer sliding body and the inner sliding body can be engaged or disengaged from each other, and a locking mechanism is provided to lock them. The locking mechanism can unlock when the pressure on the door exceeds a threshold.

[0011] Furthermore, the locking mechanism includes a spring seat on the outer slide body and a locking block on the inner slide body. The spring seat contains a locking pin and a locking spring, wherein the locking pin can be ejected under the action of the locking spring. The locking block includes a first locking block and a second locking block, which are arranged back and forth along the sliding direction. The first locking block is located on the side closer to the door body, and a gap is left between the two locking blocks for the locking pin to be inserted. The side of the first locking block near the gap is a right angle, and both sides of the second locking block are inclined, and the slope of the side closer to the gap is greater than that of the side away from the gap.

[0012] Furthermore, the transmission box is equipped with a chain, which is vertically arranged. The connecting rod is connected to the chain, and the sprocket at one end of the chain is connected to the transmission shaft. The transmission shaft is connected to the drive shaft through a gearbox.

[0013] Furthermore, a guide rail is provided on the outer side of the piston cylinder, the connecting rod is slidably connected to the guide rail, and a limiting block is provided at the lower end of the guide rail.

[0014] Furthermore, it also includes a filtration pool, the bottom of which has a water outlet connected to the upstream river channel, and a filter plate is installed on the water outlet. The bottom of the piston cylinder is connected to the bottom of the filtration pool through a U-shaped pipe.

[0015] Furthermore, both the filter tank and the piston cylinder are located on the outside of the gate wall.

[0016] The beneficial effects of this invention are as follows:

[0017] (1) This invention provides a post-adjustable hydraulic automatic flap gate, which utilizes the principle of communicating vessels to automatically adjust and control the opening and closing or the opening degree of the flap gate based on the changes in the water level of the upstream river. On this basis, the initial conditions of the gate can be changed simply by adjusting the height of the stop rod connection point, thus meeting the need for flexible adjustment and control during later use.

[0018] (2) In this invention, a screw drives the sliding seat to slide, thereby controlling the gate opening size. Based on the self-locking characteristic of the screw structure itself, the gate can be stably maintained at a certain opening position, thus preventing the repeated opening and closing vibration of the flap gate caused by the upstream water flow and wave action.

[0019] (3) The sliding seat in this invention adopts a split structure design, which can prevent the gate from being unable to flip and open normally due to the failure of the rotating shaft and gear jamming, thereby ensuring the safety of the gate structure.

[0020] (4) The present invention sets up a filter pool to ensure the cleanliness of the piston cylinder and avoid the occurrence of clogging problems. Attached Figure Description

[0021] Figure 1 This is a structural diagram of the flap gate of the present invention;

[0022] Figure 2 This is a structural diagram of the flap gate of the present invention from another perspective;

[0023] Figure 3 This is a sectional view of one side of the flap gate connector of the present invention;

[0024] Figure 4 This is a structural diagram of one side of the flap gate connector of the present invention;

[0025] Figure 5 This is a structural diagram of one side of the flap gate body of the present invention;

[0026] Figure 6 This is a structural diagram of the flap gate body of the present invention;

[0027] Figure 7 This is an exploded view of the sliding seat of the present invention;

[0028] Figure 8 This is a cross-sectional view of the sliding seat of the present invention;

[0029] Figure 9(a) is a schematic diagram of the state of the flap gate of the present invention at a lower water level;

[0030] Figure 9(b) is a schematic diagram of the state of the flap gate plug rod of the present invention in the low connection position;

[0031] Figure 9(c) is a schematic diagram of the state of the flap gate plug rod of the present invention in the high connection position.

[0032] Figure label:

[0033] 1-Sluice gate wall; 2-Gate body; 21-Diagonal brace; 3-Filter tank;

[0034] 31-Filter plate; 4-Transmission box; 41-Chain; 42-Drive shaft;

[0035] 43-Gearbox; 5-Piston cylinder; 51-Piston; 52-Plug rod;

[0036] 53-Plug joint; 54-Connecting rod; 55-Chain joint; 56-Guide rail;

[0037] 57-Limit block; 6-Slide rail; 61-Screw; 62-Commutator;

[0038] 63-Drive shaft; 7-Sliding seat; 71-Outer sliding body; 72-Inner sliding body;

[0039] 73-Spring seat; 74-First locking block; 75-Locking pin; 76-Second locking block;

[0040] 77 - Locking spring. Detailed Implementation

[0041] Embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein similar or identical reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0042] like Figure 1 and Figure 2 The flap gate shown has multiple gate bodies 2 arranged side by side between the two gate walls 1. The bottom of the gate body 2 is connected to the foundation through a pivot. A filter pool 3, a transmission box 4 and a piston cylinder 5 are arranged on the outside of one of the gate walls 1. The filter pool 3 is connected to the upstream river channel. Specifically, a water outlet is opened at the bottom of the side wall of the filter pool 3, and a filter plate 31 is installed on the water outlet.

[0043] like Figure 3 and Figure 4As shown, the piston cylinder 5 is vertically mounted on the roadbed surface. The bottom of the piston cylinder 5 is connected to the bottom of the filter tank 3 via a U-shaped pipe, thus forming a communicating vessel structure. Inside the piston cylinder 5, there is a piston 51 and a stopper rod 52. The stopper rod 52 is located above the piston 51, and its bottom can abut against the top of the piston 51 (the stopper rod 52 and piston 51 are non-fixed structures and can be separated). A guide rail 56 is provided on the outside of the piston cylinder 5. The guide rail 56 is vertically mounted, and a connecting rod 54 is slidably connected to it. A limiting block 57 is provided at the lower end of the guide rail 56 to limit the lowest point of the connecting rod 54's downward movement. The upper end of the connecting rod 54 is connected to the stopper rod 52 via a stopper rod connector 53. The connection point between the stopper rod connector 53 and the stopper rod 52 is adjustable vertically, allowing the bottom of the stopper rod 52 to move closer to or further away from the stopper rod connector 53. The connecting rod 54 may also be equipped with a counterweight of a certain mass (not shown in the figure) to ensure that the connecting rod 54 can move smoothly with sufficient self-weight when it is not subjected to the force of the piston 51.

[0044] The transmission box 4 is located on the side near the guide rail 56. Inside the transmission box 4 are a chain 41, a drive shaft 42, and a gearbox 43. The chain 41 is vertically arranged, with both ends coiled around sprockets. The upper sprocket is mounted on the transmission box 4 via a shaft, and the lower sprocket is connected to the drive shaft 42. The drive shaft 42 is connected to the drive shaft 63 via the gearbox 43. The gearbox 43 shown in the figure is a pair of meshing gears; this is only for illustrative purposes and does not represent the actual structure of the gearbox 43. The connecting rod 54 is connected to the chain 41 via a chain joint 55.

[0045] like Figure 5 and Figure 6 As shown, the drive shaft 63 is located at the bottom near the downstream side of the door body 2 and is parallel to the pivot of the door body 2. Each door body 2 is equipped with a set of opening and closing mechanisms. Multiple sets of opening and closing mechanisms are connected in series with the drive shaft 63 and are driven and controlled by the drive shaft 63 to perform the opening and closing actions. The opening and closing mechanism specifically includes a slide rail 6 and a sliding seat 7 that slides on top of it. The slide rail 6 is laid horizontally on the foundation downstream of the door body 2 and is perpendicular to the pivot of the door body 2. The sliding seat 7 is connected to the door body 2 by a diagonal brace 21, one end of which is hinged to the door body 2 and the other end is hinged to the sliding seat 7. When the sliding seat 7 moves towards the door body 2, the door body 2 is lifted by the diagonal brace 21, and the gate is closed. Conversely, when the sliding seat 7 moves away from the door body 2, the door body 2 flips and falls, and the gate is opened.

[0046] The sliding seat 7 is specifically driven by a screw 61. Both ends of the screw 61 are mounted above the slide rail 6 via bearings. One end of the screw 61 is connected to the drive shaft 63 via a commutator 62. The commutator 62 is a pair of bevel gears meshing at 90°. One bevel gear is mounted on the drive shaft 63, and the other bevel gear is connected to the screw 61. When the drive shaft 63 rotates, it drives the screw 61 to rotate, thereby driving the sliding seat 7 to slide forward or backward.

[0047] like Figure 7 and Figure 8 As shown, the sliding seat 7 consists of two parts: an outer sliding body 71 and an inner sliding body 72, which are slidably connected to the slide rail 6. The outer sliding body 71 has a hinged seat at its top for connecting the diagonal brace 21; while the inner sliding body 72 has a threaded hole running through its center for engaging with the screw 61. The lower part of the outer sliding body 71 is open at both ends, and its cross-sectional shape matches that of the inner sliding body 72, allowing the inner sliding body 72 to slide into / out of the outer sliding body 71 along the forward and backward sliding direction. Meanwhile, spring seats 73 are provided on the left and right sides of the outer sliding body 71. A locking spring 77 and a locking pin 75 are provided in the spring seat 73. One end of the locking pin 75 can be inserted into the inner side of the outer sliding body 71, and the other end is connected to the locking spring 77 and is compressed by it. Correspondingly, locking blocks are symmetrically provided on the left and right sides of the inner sliding body 72, including a square first locking block 74 and a wedge-shaped second locking block 76. The two locking blocks are arranged back and forth along the sliding direction, and the first locking block 74 is located on the side closer to the door body 2. A gap is left between the two locking blocks for the locking pin 75 to be inserted. The side of the first locking block 74 near the gap is a right angle side, and both sides of the second locking block 76 are inclined sides. The slope is larger on the side closer to the gap and smaller on the side farther away from the gap. Through the aforementioned split structure design of the outer sliding body 71 and the inner sliding body 72, if a gear or shaft becomes stuck due to a malfunction, when the upstream water level rises to a certain height and the downward pressure exerted by the river water on the gate exceeds the elastic force of the locking spring 77, the locking pin 75 will be pressed into the spring seat 73, and the outer sliding body 71 and the inner sliding body 72 will be unlocked and separated, so that the gate body 2 can be flipped open under the action of water pressure.

[0048] When the aforementioned flap valve is in use, changes in the upstream water level will cause the piston 51 in the piston cylinder 5 to move up or down through the communicating vessel effect. This piston 51 then pushes the piston rod 52, causing the connecting rod 54 to move up or down. When the connecting rod 54 moves, it drives the chain 41 connected to it, which in turn drives the drive shaft 42 to rotate. Finally, the drive shaft 42 drives the drive shaft 63 to rotate via the gearbox 43. Once the drive shaft 63 rotates, it will successively drive each opening and closing mechanism to open or close the gate.

[0049] Figure 9 shows schematic diagrams of several states of the flap gate of the present invention. Figure 9(a) shows that when the upstream water level is very low, the connecting rod 54 descends to the lowest point and is supported by the limiting block 57. At this time, the gate body 2 is in the highest position that can be flipped. Figures 9(b) and 9(c) are used for comparison. In Figure 9(b), the connection point between the stopper rod 52 and the stopper rod joint 53 is relatively high (relative to the stopper rod 52), that is, the lower end of the stopper rod 52 is relatively low relative to the stopper rod joint 53. In this state, the upstream water level rises only slightly to make the piston 51 contact and push the stopper rod 52, thereby opening the gate. In Figure 9(c), the connection point between the stopper rod 52 and the stopper rod joint 53 is relatively low. In this state, the upstream water level needs to rise significantly to make the piston 51 contact and push the stopper rod 52 to open the gate. Therefore, in the later use of the flap gate of the present invention, only the position of the fixed point between the stopper rod 52 and the stopper rod joint 53 needs to be adjusted to flexibly change the initial conditions of the gate.

[0050] Of course, to achieve the basic functions of the gate, the piston cylinder 5 does not necessarily have to be located outside the gate wall 1; it can also be located between the two gate walls 1 and downstream of the gate body 2. The filter pool 3 is also not mandatory; if the blockage of the piston cylinder 5 is not a concern, it can be directly connected to the upstream river channel via a pipe. The specific structure of the chain 41 and other components within the transmission box 4 is merely a preferred embodiment of the present invention. There are many types of transmission structures in the prior art, and any transmission structure that can convert the translational movement of the piston rod 52 in the present invention into the rotational movement of the drive shaft 63 can make the technical solution of the present invention valid and implementable.

[0051] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0052] This invention is not limited to the above-described embodiments. Any obvious improvements, substitutions, or modifications that can be made by those skilled in the art without departing from the essence of this invention are within the scope of protection of this invention.

Claims

1. A post-adjustable hydraulic automatic flap gate, characterized in that: The device includes a door body (2), an opening and closing mechanism, a piston cylinder (5), and a transmission assembly. The opening and closing mechanism is used to drive the door body (2) to open and close. The piston cylinder (5) is vertically arranged, and the bottom of the piston cylinder (5) is connected to the upstream river channel through a pipe. The piston cylinder (5) is equipped with a piston (51) and a piston rod (52). The piston rod (52) is located above the piston (51), and the two can abut against each other. The piston rod (52) is connected to the transmission assembly through a connecting rod (54). The transmission assembly is also connected to the opening and closing mechanism and can drive the opening and closing mechanism to operate according to the translational movement of the piston rod (52). The opening and closing mechanism includes a slide rail (6), which is horizontally arranged and perpendicular to the pivot of the door body (2). A sliding seat (7) is slidably connected to the slide rail (6). The sliding seat (7) is connected to the door body (2) through a diagonal brace (21). The two ends of the diagonal brace (21) are respectively hinged to the sliding seat (7) and the door body (2). The sliding seat (7) is driven by a screw (61), which is connected to the transmission assembly. The transmission assembly includes a transmission box (4) and a drive shaft (63). The drive shaft (63) is parallel to the pivot of the door body (2). The screw (61) is connected to the drive shaft (63) through a commutator (62). The transmission box (4) is connected to the connecting rod (54) and the drive shaft (63) respectively, and can drive the drive shaft (63) to rotate according to the translational movement of the piston rod (52). The sliding seat (7) includes an outer sliding body (71) and an inner sliding body (72). The outer sliding body (71) and the inner sliding body (72) are slidably connected to the slide rail (6). The top of the outer sliding body (71) is connected to the diagonal brace (21) through a hinge seat. The middle part of the inner sliding body (72) is provided with a threaded hole that cooperates with the screw (61). The outer sliding body (71) and the inner sliding body (72) can be combined or separated from each other, and a locking mechanism is provided to lock them. The locking mechanism can unlock when the pressure on the door (2) exceeds the threshold.

2. The flap gate according to claim 1, characterized in that: The position of the connection point between the stopper rod (52) and the connecting rod (54) can be adjusted up and down.

3. The flap gate according to claim 1, characterized in that: The locking mechanism includes a spring seat (73) provided on the outer slide body (71) and a locking block provided on the inner slide body (72). The spring seat (73) is provided with a locking pin (75) and a locking spring (77). The locking pin (75) can pop out under the action of the locking spring (77). The locking block includes a first locking block (74) and a second locking block (76). The two locking blocks are arranged back and forth along the sliding direction. The first locking block (74) is located on the side closer to the door body (2). There is a gap between the two locking blocks for the locking pin (75) to be inserted. The side of the first locking block (74) near the gap is a right angle side. Both sides of the second locking block (76) are inclined sides. The slope of the side closer to the gap is greater than that of the side away from the gap.

4. The flap gate according to claim 1, characterized in that: The transmission box (4) is equipped with a chain (41), which is vertically arranged. The connecting rod (54) is connected to the chain (41). The sprocket at one end of the chain (41) is connected to the transmission shaft (42). The transmission shaft (42) is connected to the drive shaft (63) through the gearbox (43).

5. The flap gate according to claim 1, characterized in that: The piston cylinder (5) is provided with a guide rail (56) on the outside, and the connecting rod (54) is slidably connected to the guide rail (56). A limit block (57) is provided at the lower end of the guide rail (56).

6. The flap gate according to claim 1, characterized in that: It also includes a filter pool (3), the bottom of the side wall of the filter pool (3) is provided with a water outlet connected to the upstream river channel, and a filter plate (31) is provided on the water outlet. The bottom of the piston cylinder (5) is connected to the bottom of the filter pool (3) through a U-shaped pipe.

7. The flap gate according to claim 6, characterized in that: The filter pool (3) and piston cylinder (5) are both located outside the gate wall (1).

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