Protective buffering device with water draining and flow dividing functions

Abstract

The invention relates to the technical field of bridge protection, in particular to a protection buffering device with a water draining and flow dividing function. Comprising a buffer plate, and the buffer plate can slide in the vertical direction relative to the side wall of the pier. According to the scheme, through arrangement of a buffer plate and a first pushing plate, the buffer plate can be pushed by impact force generated when water flow impacts the surface of the pier, the buffer plate can move in the direction of the pier, the impact force of the buffer plate can be absorbed through the effect of a fixing spring in the moving process, and the buffer plate is synchronously prevented from falling off. The buffer plate opposite to the impacted buffer plate can also move towards the pier, and when the buffer plate moves, the first scraping rod and the second scraping rod of the object can move, and then the opposite buffer plate is driven to move towards the pier, so that impact force brought by water flow is absorbed under the action of a fixed spring, and the impact force is reduced. Therefore, impact of water flow on the pier can be reduced.

Description

Technical Field

[0001] The invention relates to the technical field of bridge protection, and in particular to a protection buffer device with a water-draining and diverting function. Background Art

[0002] As an important channel connecting the two banks, the safety and stability of the bridge are of vital importance. However, the scouring effect of water flow on the bridge piers may cause damage to the pier structure, and in serious cases may even cause safety accidents.

[0003] The continuous flow of water will impact the piers supporting the bridge. Therefore, it is necessary to divert the water that impacts the piers and reduce the impact of the water on the piers. In addition, when the piers are in water, biofilms will form on their surfaces. Specifically, in fresh water or sea water, algae, bacteria and other microorganisms may attach to the surface of the piers to grow and multiply, forming a layer of biofilm. These microorganisms not only affect the appearance, but may also secrete acidic metabolites, accelerating the corrosion of concrete or metal.

[0004] The above two situations will affect the service life of the bridge pier. Therefore, in order to reduce the impact force of water flow on the bridge pier and treat the biofilm formed on the surface of the bridge pier, a protective buffer device with a hydrophobic diversion function is proposed. Summary of the invention

[0005] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides a protective buffer device with a water-draining and diverting function to solve the problems raised in the above background technology.

[0006] A protective buffer device with a drainage diversion function comprises a buffer plate, the buffer plate can slide in a vertical direction relative to the side wall of a pier, a bottom frame and a top plate are arranged on the side wall of the pier, the bottom frame is arranged on the outer side wall of the pier close to the bottom end, and the top plate is arranged on the side wall of the pier; A scraping mechanism for scraping biofilm is provided on the side wall of the bridge pier, wherein two scraping mechanisms opposite to each other on the bridge pier are connected to each other to adapt to the impact of water flow in different directions; The scraping mechanism includes a first scraping rod and a second scraping rod, the first scraping rod and the second scraping rod are attached to the surface of the pier, and the first scraping rod and the second scraping rod will scrape the biofilm on the surface of the pier when the water flow impacts the buffer plate Preferably, the top plate is disposed above the water flow, and the top plate is connected to the first scraping rod via a first telescopic rod, and the first telescopic rod is used to guide the sliding direction of the first scraping rod; The bottom frame is connected to the second scraper rod by a second telescopic rod, which is used to guide the sliding direction of the second scraper rod. A reset spring is sleeved on the outer side of the second telescopic rod, which is used to reset the second scraper rod when the water flow does not impact the second scraper rod.

[0007] Preferably, the buffer plate is provided with a plurality of flow openings, a one-way groove is provided on the side of the flow opening opposite to the bridge pier, a blocking rod is connected to the one-way groove via a third telescopic rod, and the size of the blocking rod is adapted to the one-way groove; The pier is provided with two symmetrically arranged guide shafts for guiding the buffer plate. The buffer plate is slidably connected to the guide shafts. The outer wall of the guide shaft is sleeved with a fixed spring. The two ends of the fixed spring are respectively fixedly connected to the outer surface of the buffer plate and the pier. The fixed spring is used for resetting the buffer plate after being impacted by water flow.

[0008] Preferably, the buffer plate and the first scraper rod are connected via a connecting rod, and two ends of the connecting rod are rotatably connected to the first scraper rod and the buffer plate respectively.

[0009] Preferably, the scraping mechanisms located on opposite sides of the pier are connected to each other through a transmission group, and the transmission group includes a transmission groove opened on the pier, wherein the transmission groove is above the water flow; A rotating shaft is rotatably connected in the transmission groove, and both ends of the rotating shaft are fixedly connected to a pushing gear. The first scraping rod and the second scraping rod in the same scraping mechanism are respectively connected to the first rack and the second rack. The first rack and the second rack are respectively located on both sides of the pushing gear and are both meshed and connected with the pushing gear.

[0010] Preferably, a third scraper rod is provided below the second scraper rod, and the third scraper rod is used to move downward relative to the second scraper rod to scrape the extension; The second scraping rod is connected to the third scraping rod by a fourth telescopic rod, and the moving direction of the third scraping rod corresponds to the moving direction of the second scraping rod; The third scraping rod is provided with a plurality of communication ports, and the communication ports are used to reduce the resistance of the water flow to the third scraping rod when the third scraping rod moves up or down.

[0011] Preferably, the second scraper rod is fixedly connected to two symmetrically arranged mounting plates, a first push plate is slidably connected between the two mounting plates, and a first spring is arranged between the first push plate and the mounting plate close to the bridge pier; The third scraper rod is provided with two symmetrically arranged sliding plates, a second push plate is slidably connected between the two sliding plates, and a second spring is provided between the second push plate and the sliding plate away from the pier; The first push plate is provided with a first inclined surface, and the second push plate is provided with a second inclined surface. Under the impact of water flow, the first push plate and the second push plate drive the third scraping rod to move downward through the action of the first inclined surface and the second inclined surface.

[0012] Preferably, a floating block is fixedly connected to the bottom of the third scraper rod, the density of the floating block is less than the density of water, and the floating block can move the third scraper rod upward and reset when the water flow does not impact the first push plate and the second push plate.

[0013] The beneficial effects of the present invention are: 1. The scheme provides a buffer plate and a first push plate, so that the impact force generated when the water flow impacts the surface of the bridge pier will push the buffer plate, and the buffer plate will move in the direction of the bridge pier. During the movement, the impact force of the buffer plate will be absorbed by the action of the fixed spring. Synchronously, the buffer plate opposite to the impacted buffer plate will also move in the direction of the bridge pier. When the buffer plate moves, the first scraper rod and the second scraper rod of the object will move, thereby driving the opposite buffer plate to move in the direction of the bridge pier, thereby absorbing the impact force brought by the water flow under the action of the fixed spring, thereby reducing the impact of the water flow on the bridge pier.

[0014] 2. This solution provides a first scraping rod and a second scraping rod, so that when the buffer plate is impacted by the water flow and moves toward the pier, the first scraping rod and the second scraping rod can move upward and downward respectively, and during the movement, the biofilm attached to the surface of the pier can be scraped off.

[0015] 3. When the water flow impacts the buffer plate, the water flow will also impact the first push plate under the buffer plate, and synchronously, will also impact the second push plate on the other side corresponding to the pier. As a result, under the action of the first inclined surface and the second inclined surface, the third scraping rod can move downward, thereby scraping the biofilm and increasing the treatment range of the biofilm on the surface of the pier. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 It is a schematic diagram of the position of the rotating axis in the present invention; Figure 3 It is a structural schematic diagram of the one-way groove and the blocking rod in the present invention; Figure 4 It is a schematic diagram of the positions of the buffer plates on the opposite sides of the bridge pier in the present invention; Figure 5 It is a schematic structural diagram of the third scraping rod in the present invention; Figure 6 is a schematic diagram of the position of the first inclined plane in the present invention; In the figure: 1. Pier; 2. Bottom frame; 3. Top plate; 4. First scraper rod; 5. Second scraper rod; 6. Buffer plate; 7. First telescopic rod; 8. Second telescopic rod; 9. Return spring; 10. Guide shaft; 11. One-way groove; 12. Flow port; 13. Blocking rod; 14. Third telescopic rod; 15. Connecting rod; 16. First rack; 17. Second rack; 18. Transmission groove; 19. Rotating shaft; 20. Pushing gear; 21. Third scraper rod; 22. Floating block; 23. Connecting port; 24. Fourth telescopic rod; 25. First push plate; 26. Second push plate; 27. Sliding plate; 28. Second spring; 29. ​​Second inclined plane; 30. Mounting plate; 31. First spring; 32. First inclined plane. DETAILED DESCRIPTION

[0017] The following will refer to the attached Figures 1 to 6 The embodiments of the present invention are described in detail. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the protection scope of the present invention. Example

[0018] A protective buffer device with a water-draining diversion function, comprising a buffer plate 6, as shown in the attached Figure 1 The buffer plate 6 can slide in the vertical direction relative to the side wall of the pier 1. The side wall of the pier 1 is provided with a bottom frame 2 and a top plate 3. The bottom frame 2 is arranged on the outer side wall of the pier 1 near the bottom end, and the top plate 3 is arranged on the side wall of the pier 1. The top plate 3 is disposed above the water flow and is used to connect the first scraping rod 4 . The top plate 3 and the first scraping rod 4 are connected via a first telescopic rod 7 , which is used to guide the sliding direction of the first scraping rod 4 .

[0019] The bottom frame 2 is connected to the second scraper rod 5 via a second telescopic rod 8, which is used to guide the sliding direction of the second scraper rod 5. A reset spring 9 is sleeved on the outer side of the second telescopic rod 8, which is used to reset the second scraper rod 5 when the water flow does not impact the second scraper rod 5. When the water flow impacts the buffer plate 6, the reset spring 9 will be compressed. When the water flow does not impact the buffer plate 6, the reset spring 9 will reset the buffer plate 6 through the linkage of multiple components. Example

[0020] The buffer plate 6 is provided with a plurality of flow openings 12. A one-way groove 11 is provided on the side of the flow opening 12 opposite to the bridge pier 1. A blocking rod 13 is connected to the one-way groove 11 through a third telescopic rod 14. The size of the blocking rod 13 is adapted to the one-way groove 11. The side of the buffer plate 6 opposite to the bridge pier 1 is in the positive direction, and the opposite side is in the negative direction. When the water flow impacts the buffer plate 6 on one side in the positive direction, the water flow will impact the multiple blocking rods 13 on the buffer plate 6, so that the buffer plate 6 is fully stressed to slow down the impact force of the dispersed water flow. The buffer plate 6 on the other side of the bridge pier 1 opposite to the buffer plate 6 will be impacted by the water flow in the reverse direction, and the water flow will push the blocking rod 13 to move, and the blocking rod 13 will move to the outside of the one-way groove 11, and the water flow will pass through this buffer plate 6.

[0021] The pier 1 is provided with two symmetrically arranged guide shafts 10 for guiding the buffer plate 6. The buffer plate 6 is slidably connected to the guide shafts 10. The outer wall of the guide shaft 10 is sleeved with a fixed spring. The two ends of the fixed spring are respectively fixedly connected to the buffer plate 6 and the outer surface of the pier 1. The fixed spring is used for resetting the buffer plate 6 after being impacted by water flow.

[0022] As mentioned above, when the two buffer plates 6 on the opposite sides of the pier 1 are impacted by the forward and reverse directions of the water flow, they will move toward the pier 1, and the fixed springs will absorb the impact force. It should be noted that the force for the reverse buffer plate 6 to move when impacted by the water flow is provided by the force of the water flow impacting the forward buffer plate 6. The impact force of the water flow is absorbed by the two fixed springs.

[0023] A scraping mechanism for scraping biofilm is provided on the side wall of the pier 1, wherein two scraping mechanisms opposite to each other on the pier 1 are connected to each other to adapt to the impact of water flow in different directions; The buffer plate 6 and the first scraping rod 4 are connected via a connecting rod 15 , and two ends of the connecting rod 15 are rotatably connected to the first scraping rod 4 and the buffer plate 6 , respectively.

[0024] The scraping mechanism includes a first scraping rod 4 and a second scraping rod 5, which are attached to the surface of the pier 1. The first scraping rod 4 and the second scraping rod 5 will scrape the biofilm on the surface of the pier 1 when the water flow impacts the buffer plate 6. The specific method is: when the buffer plate 6 moves toward the pier 1, the first scraping rod 4 will move upward under the action of the connecting rod 15, and the biofilm near the upper end of the pier 1 will be scraped by the action of the first scraping rod 4.

[0025] The scraping mechanisms located on opposite sides of the pier 1 are connected to each other through a transmission group, and the transmission group includes a transmission groove 18 opened on the pier 1, wherein the transmission groove 18 is located above the water flow; A rotating shaft 19 is rotatably connected in the transmission groove 18, and both ends of the rotating shaft 19 are fixedly connected to a pushing gear 20. The first scraping rod 4 and the second scraping rod 5 in the same scraping mechanism are respectively connected to the first rack 16 and the second rack 17. The first rack 16 and the second rack 17 are respectively located on both sides of the pushing gear 20, and are both meshed and connected with the pushing gear 20.

[0026] As described above, when the first scraper bar 4 moves upward under the action of the water flow, it synchronously drives the first rack 16 to move upward, and the first rack 16 moves upward, which causes the push gear 20 to rotate, thereby causing the second rack 17 on the other side to move downward. Therefore, when the first rack 16 moves upward, the second rack 17 moves downward synchronously. Because the second rack 17 is connected to the second scraper bar 5, the second scraper bar 5 can move downward, thereby scraping the biofilm on the surface of the pier 1 near the lower end.

[0027] Continuing from the above part "the force of the reverse buffer plate 6 impacted by the water flow is provided by the force of the water flow impacting the forward buffer plate 6", when the water flow impacts the buffer plate 6 in the forward direction, the water flow will also impact the opposite buffer plate 6 in the reverse direction, and the buffer plate 6 impacted in the forward direction will cause the first scraper rod 4 to move up, and when the driving gear 20 rotates, the rotating shaft 19 will rotate synchronously, and then the first scraper rod 4 on the other side will move up synchronously. Similarly, the biofilm on the back side of the bridge pier 1 impacted by the water flow will be scraped, and the moving direction of the first scraper rod 4 on the back side is consistent with the moving direction of the first scraper rod 4 facing the back side, so that the buffer plate 6 on the back side will move toward the direction of the bridge pier 1 under the action of the connecting rod 15. Then, the impact force of the water flow is buffered by the action of the fixed spring. Moreover, when the direction of the water flow changes, the two faces facing and opposite to the bridge pier 1 can be cleaned in the same way. Example

[0028] This embodiment is an expansion of the step of scraping the biofilm on the surface of the pier 1 in the second embodiment, and its purpose is to extend the treatment of the biofilm to the part closer to the lower end of the pier 1 that cannot be scraped off.

[0029] A third scraping rod 21 is provided below the second scraping rod 5, and the third scraping rod 21 is used to move downward relative to the second scraping rod 5 to scrape the extension; See attached Figure 5 The second scraping rod 5 is connected to the third scraping rod 21 via a fourth telescopic rod 24, and the moving direction of the third scraping rod 21 corresponds to the moving direction of the second scraping rod 5; the fourth telescopic rod 24 is also used to limit the sliding direction of the third scraping rod 21.

[0030] The third scraping rod 21 is provided with a plurality of communication ports 23, which are used to reduce the resistance of water flow to the third scraping rod 21 when the third scraping rod 21 moves up or down. When the third scraping rod 21 moves down, the biofilm on the surface of the pier 1 can be scraped off, and the distance the third scraping rod 21 moves down is greater than the distance the second scraping rod 5 moves down. This extends the range of the device for removing the biofilm on the surface of the pier 1.

[0031] The second scraper rod 5 is fixedly connected to two symmetrically arranged mounting plates 30, a first push plate 25 is slidably connected between the two mounting plates 30, and a first spring 31 is arranged between the first push plate 25 and the mounting plate 30 close to the bridge pier 1; wherein the mounting plate 30 can only slide between the two mounting plates 30, when the water flow positively impacts the first push plate 25, the first push plate 25 is against the mounting plate 30 far away from the bridge pier 1, and the first push plate 25 will move toward the bridge pier 1. Since the second push plate 26 is against the sliding plate 27 close to the bridge pier, the positive impact of the water flow will not push the second push plate 26 to move.

[0032] The first push plate 25 will move toward the pier 1 under the impact of the positive water flow. Similarly, the second push plate 26 on the other side opposite to the pier 1 will move away from the pier 1 under the impact of the water flow in the same direction.

[0033] The third scraper rod 21 is provided with two symmetrically arranged sliding plates 27, a second push plate 26 is slidably connected between the two sliding plates 27, and a second spring 28 is provided between the second push plate 26 and the sliding plate 27 away from the pier 1; The first push plate 25 is provided with a first inclined surface 32 , and the second push plate 26 is provided with a second inclined surface 29 . Under the impact of water flow, the first push plate 25 and the second push plate 26 drive the third scraping rod 21 to move downward through the first inclined surface 32 and the second inclined surface 29 .

[0034] As mentioned above, refer to the attached Figure 4 and attached Figure 5 , with Figure 4 As shown in the reference figure, when the first push plate 25 at the front side moves, the second push plate 26 will move downward under the action of the first inclined surface 32 and the second inclined surface 29, and the third scraper rod 21 will be driven downward when the second push plate 26 moves downward. Similarly, when the second push plate 26 at the rear side moves, it will move downward relative to the first push plate 25 under the action of the first inclined surface 32 and the second inclined surface 29, thereby causing the third scraper rods 21 at both ends of the water flow impact to move downward synchronously. When the third scraper rod 21 moves downward, the downward movement distance of the second scraper rod 5 can be extended, thereby extending the range of the device to remove the biofilm on the surface of the pier 1.

[0035] The bottom of the third scraper rod 21 is fixedly connected with a floating block 22, the density of which is less than the density of water, and the floating block 22 can make the third scraper rod 21 move up and reset when the water flow does not impact the first push plate 25 and the second push plate 26. When the water flow tends to be stable, the third scraper rod 21 can move up through the combined action of the floating block 22, the first spring 31 and the second spring 28, thereby using the impact of the water flow as a power source to clean the biofilm adhered to the bridge pier 1, and also plays a certain role in protecting and buffering the bridge pier 1. It should be noted that in the description of the present invention, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings, which are only for the convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0036] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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 indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0037] So far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

Claims

1. A protective buffer device with a water-draining diversion function, characterized in that: The bridge pier (1) comprises a buffer plate (6), wherein the buffer plate (6) is capable of sliding in a vertical direction relative to a side wall of the bridge pier (1), and a bottom frame (2) and a top plate (3) are provided on the side wall of the bridge pier (1), wherein the bottom frame (2) is arranged on an outer side wall of the bridge pier (1) close to the bottom end, and the top plate (3) is arranged on the side wall of the bridge pier (1); A scraping mechanism for scraping biofilm is provided on the side wall of the bridge pier (1), wherein two scraping mechanisms opposite to each other on the bridge pier (1) are connected to each other to adapt to the impact of water flow in different directions; The scraping mechanism comprises a first scraping rod (4) and a second scraping rod (5), the first scraping rod (4) and the second scraping rod (5) being in contact with the surface of the bridge pier (1), and the first scraping rod (4) and the second scraping rod (5) will scrape the biofilm on the surface of the bridge pier (1) when the water flow impacts the buffer plate (6).

2. A protective buffer device with water-draining and diverting function according to claim 1, characterized in that: The top plate (3) is arranged above the water flow, and the top plate (3) is connected to the first scraping rod (4) via a first telescopic rod (7), and the first telescopic rod (7) is used to guide the sliding direction of the first scraping rod (4); The bottom frame (2) and the second scraper rod (5) are connected via a second telescopic rod (8), the second telescopic rod (8) being used to guide the sliding direction of the second scraper rod (5), and a return spring (9) being sleeved on the outer side of the second telescopic rod (8), the return spring (9) being used to return the second scraper rod (5) to its original position when the water flow does not impact the second scraper rod (5).

3. The protective buffer device with water-draining and diverting function according to claim 1, characterized in that: The buffer plate (6) is provided with a plurality of flow openings (12), a one-way groove (11) is provided on a side of the flow opening (12) opposite to the bridge pier (1), a blocking rod (13) is connected to the one-way groove (11) via a third telescopic rod (14), and the size of the blocking rod (13) is adapted to the one-way groove (11); The bridge pier (1) is provided with two symmetrically arranged guide shafts (10) for guiding the buffer plate (6); the buffer plate (6) and the guide shafts (10) are slidably connected; the outer wall of the guide shaft (10) is sleeved with a fixing spring; the two ends of the fixing spring are respectively fixedly connected to the outer surface of the buffer plate (6) and the bridge pier (1); the fixing spring is used for resetting the buffer plate (6) after being impacted by water flow.

4. The protective buffer device with water-draining diversion function according to claim 1, characterized in that: The buffer plate (6) and the first scraper rod (4) are connected via a connecting rod (15), and two ends of the connecting rod (15) are rotatably connected to the first scraper rod (4) and the buffer plate (6) respectively.

5. The protective buffer device with water-draining and diverting function according to claim 1, characterized in that: The scraping mechanisms located on opposite sides of the bridge pier (1) are connected to each other via a transmission group, wherein the transmission group comprises a transmission groove (18) formed on the bridge pier (1), wherein the transmission groove (18) is located above the water flow; A rotating shaft (19) is rotatably connected in the transmission groove (18), and both ends of the rotating shaft (19) are fixedly connected to a driving gear (20). The first scraping rod (4) and the second scraping rod (5) in the same scraping mechanism are respectively connected to a first rack (16) and a second rack (17). The first rack (16) and the second rack (17) are respectively located on both sides of the driving gear (20) and are both meshedly connected to the driving gear (20).

6. The protective buffer device with water-draining and diverting function according to claim 1, characterized in that: A third scraper rod (21) is provided below the second scraper rod (5), and the third scraper rod (21) is used to move downward relative to the second scraper rod (5) to scrape an extension; The second scraping rod (5) and the third scraping rod (21) are connected via a fourth telescopic rod (24), and the moving direction of the third scraping rod (21) corresponds to the moving direction of the second scraping rod (5); The third scraper rod (21) is provided with a plurality of communication openings (23), and the communication openings (23) are used to reduce the resistance of the water flow to the third scraper rod (21) when the third scraper rod (21) moves upward or downward.

7. The protective buffer device with water-draining and diverting function according to claim 6, characterized in that: The second scraper rod (5) is fixedly connected to two symmetrically arranged mounting plates (30), a first push plate (25) is slidably connected between the two mounting plates (30), and a first spring (31) is provided between the first push plate (25) and the mounting plate (30) close to the pier (1); The third scraper rod (21) is provided with two symmetrically arranged sliding plates (27), a second push plate (26) is slidably connected between the two sliding plates (27), and a second spring (28) is provided between the second push plate (26) and the sliding plate (27) away from the bridge pier (1); The first push plate (25) is provided with a first inclined surface (32), and the second push plate (26) is provided with a second inclined surface (29). Under the impact of water flow, the first push plate (25) and the second push plate (26) drive the third scraping rod (21) to move downward through the action of the first inclined surface (32) and the second inclined surface (29).

8. The protective buffer device with water-draining and diverting function according to claim 6, characterized in that: A floating block (22) is fixedly connected to the bottom of the third scraping rod (21); the density of the floating block (22) is less than the density of water; the floating block (22) can move the third scraping rod (21) upward and reset when the water flow does not impact the first push plate (25) and the second push plate (26).

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