A movable dam with hydraulic mechanism protection function

Abstract

This invention discloses a movable dam with hydraulic mechanism protection, comprising a base, a dam body hinged to the base, a hydraulic mechanism mounted on the base and connected to the downstream side of the dam body, and a foldable protective assembly. The foldable protective assembly includes a first plate, a second plate, and a waterproof membrane. The top of the first plate is hinged to the downstream side of the dam body, the bottom of the first plate is hinged to the top of the second plate, the bottom of the second plate is hinged to the base, the top of the waterproof membrane is connected to the downstream side of the dam body, and a counterweight is connected to the bottom of the waterproof membrane. Under the weight of the counterweight, the waterproof membrane droops and adheres to the outer surfaces of the first and second plates. The hydraulic mechanism is located between the dam body and the foldable protective assembly. This movable dam, by incorporating the foldable protective assembly, can protect the hydraulic mechanism from damage by foreign objects, extending its service life and significantly reducing the noise generated by the cascading water.

Description

Technical Field

[0001] This invention relates to the field of hydraulic dam technology, and more specifically to a movable dam with hydraulic mechanism protection function. Background Technology

[0002] Hydraulic dams are a type of dam with many advantages. They use a row of hydraulic cylinders to support the rotating dam surface to achieve the purpose of water interception, dam lowering and flood control. They are generally used in small and medium-sized rivers or reservoirs. Compared with traditional dams, they have lower construction costs, more reliable dam structure and longer service life, stronger flood discharge capacity and higher degree of automation.

[0003] The hydraulic mechanism of a movable dam is usually located on the downstream side of the dam body. If it is not effectively protected, the hydraulic mechanism may be damaged by foreign objects during use. In addition, rain and sun exposure will significantly reduce its service life. Furthermore, when the water flows over the top of the dam, it will impact the hydraulic mechanism and generate a lot of noise from the falling water. Summary of the Invention

[0004] The purpose of this invention is to provide a movable dam with hydraulic mechanism protection function, which solves the problems of existing movable dam hydraulic mechanisms being easily damaged by foreign objects due to lack of protection, having a short service life, and generating large drop noise during flow.

[0005] The present invention achieves the above objectives through the following technical solutions:

[0006] A movable dam with hydraulic protection includes a base, a dam body hinged to the base, a hydraulic mechanism mounted on the base and connected to the downstream side of the dam body, and a foldable protective assembly. The foldable protective assembly includes a first plate, a second plate, and a waterproof membrane. The top of the first plate is hinged to the downstream side of the dam body, the bottom of the first plate is hinged to the top of the second plate, the bottom of the second plate is hinged to the base, the top of the waterproof membrane is connected to the downstream side of the dam body, and a counterweight is connected to the bottom of the waterproof membrane. The waterproof membrane hangs down and adheres to the outer sides of the first and second plates under the weight of the counterweight. The hydraulic mechanism is located between the dam body and the foldable protective assembly.

[0007] A further improvement is that the first and second plates are always bent toward the side away from the hydraulic mechanism, and the bending angle changes adaptively as the dam rotates.

[0008] A further improvement is that rubber strips are provided on both ends of the dam body. The rubber strips extend from the top to the bottom of the end face of the dam body to fit the objects on both sides of the dam body and achieve water stoppage at the gap between the end face of the dam body and the objects on both sides.

[0009] A further improvement is that both ends of the dam body are provided with mounting grooves, the rubber strip is movably installed in the mounting grooves, several support rods are connected to the inner side of the rubber strip, and springs are sleeved on the support rods to push the support rods and the rubber strip out of the mounting grooves, so that the rubber strip fits tightly against the objects on both sides of the dam body.

[0010] A further improvement is that a water pressure plate is movably installed on the upstream side of the dam body via several guide rods. A gap is left between the water pressure plate and the dam body, and the edges of the water pressure plate are flexibly sealed to the dam body via rubber rings. A transmission rod is provided on the inner side of the water pressure plate, and a gear is provided inside the dam body. The gear meshes with the transmission rod and one of the support rods. Under the action of water pressure, the water pressure plate pushes the transmission rod to move inward, the transmission rod drives the gear to rotate, and the gear pushes the support rod and rubber strip to move outward, so that the tightness of the rubber strip against the objects on both sides of the dam body increases with the increase of water pressure.

[0011] A further improvement is that the dam body is provided with grooves for the movement of the guide rod and the transmission rod.

[0012] A further improvement is that the hydraulic mechanism is connected to the downstream side of the dam body via a rotating shaft, and a drive disc is connected to one end of the rotating shaft. Several protruding posts are evenly distributed along the circumference on the drive disc. A drive cylinder is provided at the end of the support rod that meshes with the gear. The drive cylinder has a central hole and several column holes distributed along the circumference on the cylinder wall facing the rotating shaft. The drive disc extends into the drive cylinder through the central hole and maintains a gap with the cylinder wall facing the rotating shaft. The protruding posts extend into the column holes one by one and maintain a gap with the column hole wall.

[0013] When the hydraulic mechanism extends and retracts, causing the dam body to rotate, the rotating shaft rotates and drives the drive disc to rotate synchronously. The protruding column on the drive disc slides out from the column hole and squeezes the drive cylinder to move a certain distance. The drive cylinder pulls the support rod and rubber strip to move a certain distance into the installation groove, so that the rubber strip is separated from the objects on both sides of the dam body.

[0014] A further improvement is that both the protruding post and the post hole are frustum-shaped, and there are three or six of them.

[0015] The beneficial effects of this invention are as follows:

[0016] (1) The active dam can protect the hydraulic mechanism by setting up foldable protective components, avoid damage to the hydraulic mechanism by foreign objects, improve service life, and at the same time greatly reduce the generation of water drop noise;

[0017] (2) The movable dam can be tightly attached to the objects on both sides of the dam body by means of rubber strips, which can improve the water-stopping effect. As the amount of water intercepted by the dam body increases, it can automatically increase the tightness of the rubber strips attached to the objects on both sides, so as to avoid the phenomenon of water seepage due to increased water pressure. In addition, during the rotation of the dam body, it can automatically retract the rubber strips and separate them from the objects on both sides, thereby reducing the rotation resistance and avoiding excessive wear on the rubber strips. Attached Figure Description

[0018] Figure 1 This is a structural schematic diagram from the downstream side perspective of the present invention;

[0019] Figure 2 This is a structural schematic diagram from the upstream side perspective of the present invention;

[0020] Figure 3 This is a structural schematic diagram from the end view of the present invention;

[0021] Figure 4 A schematic diagram of the structure in which a water pressure plate drives a rubber strip to adhere to objects on both sides;

[0022] Figure 5 A schematic diagram of the structure for the drive mechanism to extend and retract, causing the rubber strip to detach from the objects on both sides;

[0023] Figure 6 for Figure 5 Enlarged view of point A in the middle;

[0024] Figure 7 Schematic diagram of a drive disk with different numbers of protrusions;

[0025] In the diagram: 1. Base; 2. Dam body; 3. Hydraulic mechanism; 4. First plate; 5. Second plate; 6. Waterproof membrane; 7. Counterweight; 8. Rubber strip; 9. Mounting groove; 10. Support rod; 11. Spring; 12. Guide rod; 13. Hydraulic pressure plate; 14. Rubber ring; 15. Transmission rod; 16. Gear; 17. Rotating shaft; 18. Drive disc; 19. Protruding column; 20. Drive cylinder; 21. Center hole; 22. Column hole. Detailed Implementation

[0026] The present application will now be described in further detail with reference to the accompanying drawings. It should be noted that the following specific embodiments are only used to further illustrate the present application and should not be construed as limiting the scope of protection of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application based on the above application content.

[0027] Example 1

[0028] Combination Figure 1-3As shown, a movable dam with hydraulic mechanism protection includes a base 1, a dam body 2 hinged to the base 1, and a hydraulic mechanism 3 mounted on the base 1 and connected to the downstream side of the dam body 2. It also includes a foldable protective assembly comprising a first plate 4, a second plate 5, and a waterproof membrane 6. The top of the first plate 4 is hinged to the downstream side of the dam body 2, with the hinge point located above the connection point of the hydraulic mechanism 3. The bottom of the first plate 4 is hinged to the top of the second plate 5, and the bottom of the second plate 5 is hinged to the base 1, with the hinge point located downstream of the connection point of the hydraulic mechanism 3. The top of the waterproof membrane 6 is connected to the downstream side of the dam body 2, and a counterweight 7 is connected to the bottom of the waterproof membrane 6. Under the weight of the counterweight 7, the waterproof membrane 6 hangs down and adheres to the outer surfaces of the first plate 4 and the second plate 5. The hydraulic mechanism 3 is located between the dam body 2 and the foldable protective assembly. In this embodiment, the first plate 4 and the second plate 5 are always bent away from the hydraulic mechanism 3, and the bending angle adaptively changes as the dam body 2 rotates.

[0029] The first plate 4 and the second plate 5 provide initial protection and support, while the waterproof membrane 6 prevents water from flowing through the joint between the first plate 4 and the second plate 5, as well as the joint between the first plate 4 and the dam body 2. During the rotation and lifting of the dam body 2, the angle between the first plate 4 and the second plate 5 gradually increases (always less than 180°). During the rotation and lowering of the dam body 2, the angle between the first plate 4 and the second plate 5 gradually decreases, achieving folding and retraction without affecting the hydraulic mechanism 3 or the movement of the dam body 2.

[0030] In addition, the hydraulic mechanism 3 is a telescopic drive based on a hydraulic cylinder. Its specific structure is existing technology and is not limited here. For example, it includes a first connecting arm, a second connecting arm, and a hydraulic cylinder. The first connecting arm and the second connecting arm are hinged to each other. At the same time, the first connecting arm is hinged to the dam body 2, and the second connecting arm is hinged to the base 1. The bottom end of the hydraulic cylinder is hinged to the base 1, and the top end is hinged to the middle position of the first connecting arm. When the hydraulic cylinder extends or retracts, it will change the included angle between the first connecting arm and the second connecting arm and the overall support height, thereby realizing the rotation of the dam body 2. In addition, during the rotation of the dam body 2, the angle between the first connecting arm and the dam body 2 and the angle between the second connecting arm and the base 1 will also change adaptively.

[0031] Example 2

[0032] Combination Figure 1-4 As shown, a movable dam with hydraulic mechanism protection function is further provided on the basis of the structure of embodiment 1: rubber strips 8 are provided on both ends of the dam body 2. The rubber strips 8 extend from the top of the end face of the dam body 2 to the bottom of the end face, and are used to fit the objects on both sides of the dam body 2 (such as riverbank retaining walls, etc.) to achieve water stop at the gap between the end face of the dam body 2 and the objects on both sides.

[0033] In this embodiment, both ends of the dam body 2 are provided with mounting grooves 9, and the rubber strip 8 is movably disposed in the mounting groove 9. Several support rods 10 are connected to the inner side of the rubber strip 8, and springs 11 are sleeved on the support rods 10 to push the support rods 10 and the rubber strip 8 to move outward from the mounting groove 9, so that the rubber strip 8 fits tightly against the objects on both sides of the dam body 2.

[0034] In this embodiment, a water pressure plate 13 is movably installed on the upstream side of the dam body 2 via several guide rods 12. A gap is left between the water pressure plate 13 and the dam body 2, and the edges of the water pressure plate 13 are flexibly sealed to the dam body 2 via rubber rings 14. In this way, the water intercepted by the dam body 2 will generate a water pressure force on the water pressure plate 13, driving the water pressure plate 13 to move closer to the dam body 2. A transmission rod 15 is provided on the inner side of the water pressure plate 13, and a gear 16 is provided inside the dam body 2. The gear 16 is meshed with the transmission rod 15 and one of the support rods 10. Under the action of water pressure, the water pressure plate 13 pushes the transmission rod 15 to move inward, the transmission rod 15 drives the gear 16 to rotate, and the gear 16 pushes the support rod 10 and the rubber strip 8 to move outward, so that the tightness of the rubber strip 8 against the objects on both sides of the dam body 2 increases with the increase of water pressure. As the volume of water increases, the water pressure on the rubber strip 8 also increases, which can easily lead to leakage at the gaps. However, in this embodiment, the increased water volume causes the area of ​​the water body that is submerged in the water pressure plate 13 to increase, and the force exerted on the water pressure plate 13 also increases. This results in a greater tightness between the rubber strip 8 and the objects on both sides of the dam body 2, thus preventing leakage.

[0035] Preferably, the dam body 2 is provided with a groove for the movement of the guide rod 12 and the transmission rod 15, which improves the stability of the movement of the guide rod 12 and the transmission rod 15.

[0036] Example 3

[0037] Combination Figure 1-3 As shown in Figures 5-7, a movable dam with hydraulic mechanism protection function is further improved based on the structure of embodiment 2: the hydraulic mechanism 3 is connected to the downstream side of the dam body 2 through a rotating shaft 17 (if the hydraulic mechanism 3 described in the previous example is used, that is, the rotating shaft 17 is connected to the first connecting arm, and the rotating shaft 17 rotates with the first connecting arm when the angle between the first connecting arm and the dam body 2 changes), and a drive disk 18 is connected to one end of the rotating shaft 17. Several protrusions 19 are evenly distributed on the drive disk 18 along the circumferential direction. The end of the support rod 10 that meshes with the gear 16 is provided with a drive cylinder 20. The drive cylinder 20 has a central hole 21 and several column holes 22 distributed along the circumferential direction on the cylinder wall facing the rotating shaft 17. The drive disk 18 extends into the drive cylinder 20 through the central hole 21 and maintains a gap with the cylinder wall facing the rotating shaft 17. The protrusions 19 extend into the column holes 22 one by one and maintain a gap with the hole wall of the column holes 22.

[0038] In this embodiment, the dam body 2 can be rotated to multiple different states by controlling the extension and retraction of the hydraulic mechanism 3, thereby achieving the adjustment of water storage or flood discharge. During the extension and retraction of the hydraulic mechanism 3 to drive the dam body 2 to rotate, the rotating shaft 17 rotates and drives the drive disc 18 to rotate synchronously. The protruding post 19 on the drive disc 18 slides out from the post hole 22 and squeezes the drive cylinder 20 to move a certain distance. The drive cylinder 20 pulls the support rod 10 and the rubber strip 8 to move a certain distance into the mounting groove 9, so that the rubber strip 8 is separated from the objects on both sides of the dam body 2. This can reduce the rotation resistance of the dam body 2 and avoid excessive wear on the rubber strip 8. After the dam body 2 rotates to the designated state, the protruding post 19 on the drive disc 18 will slide back into the post hole 22, so that the drive cylinder 20 and the support rod 10 move out of the mounting groove 9 under the drive of the spring 11 and the water pressure plate 13, so that the rubber strip 8 is once again attached to the objects on both sides of the dam body 2. The purpose of maintaining a gap between the drive disc 18 and the wall of the drive cylinder 20, and between the protruding column 19 and the wall of the column hole 22, is that after the rubber strip 8 is attached to the objects on both sides of the dam body 2, the water pressure plate 13 can still move towards the dam body 2 when the water pressure increases, and drive the drive cylinder 20, support rod 10, and rubber strip 8 to move outward, thereby increasing the tightness of the attachment.

[0039] In this embodiment, both the protruding post 19 and the post hole 22 are frustum-shaped to facilitate relative sliding. There are three or six protruding posts 19 and post holes 22, corresponding to the extension and retraction of the hydraulic mechanism 3. For example, if it is only necessary to control the dam body 2 to be in either fully lowered or fully raised state, then the extension and retraction of the hydraulic mechanism 3 needs to be controlled to switch the dam body 2 between these two states. If the rotation angle range of the rotating shaft 17 for each switch is 120° (determined by the structure and measured in advance), then only three protruding posts 19 and post holes 22 need to be provided. Figure 7 In the right-side structure, the three protruding pillars 19 and pillar holes 22 slide in or out synchronously relative to each other. During the rotation switching process, all three slide out, and after the rotation switching is complete, all three slide in. If it is necessary to add a semi-collapsed state to the dam body 2, and the rotation angle range of the rotating shaft 17 is 60° each time, then six protruding pillars 19 and pillar holes 22 need to be set, i.e. Figure 7 The left-side structure allows for synchronized sliding in and out during and after each rotation and switching process.

[0040] The embodiments described above are merely examples of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention.

Claims

1. A movable dam with hydraulic mechanism protection function, comprising a base (1), a dam body (2) movably connected to the base (1) via a hinge, and a hydraulic mechanism (3) disposed on the base (1) and connected to the downstream side of the dam body (2), characterized in that, It also includes a foldable protective assembly, which includes a first plate (4), a second plate (5) and a waterproof membrane (6). The top of the first plate (4) is hinged to the downstream side of the dam body (2), the bottom of the first plate (4) is hinged to the top of the second plate (5), the bottom of the second plate (5) is hinged to the base (1), the top of the waterproof membrane (6) is connected to the downstream side of the dam body (2), and a counterweight (7) is connected to the bottom of the waterproof membrane (6). The waterproof membrane (6) hangs down and adheres to the outer side of the first plate (4) and the second plate (5) under the gravity of the counterweight (7). The hydraulic mechanism (3) is located between the dam body (2) and the foldable protective assembly. Both ends of the dam body (2) are provided with rubber strips (8). The rubber strips (8) extend from the top of the end face of the dam body (2) to the bottom of the end face, and are used to fit the objects on both sides of the dam body (2) to achieve water stop at the gap between the end face of the dam body (2) and the objects on both sides. The two end faces of the dam body (2) are provided with mounting grooves (9). The rubber strip (8) is movably installed in the mounting groove (9). Several support rods (10) are connected to the inner side of the rubber strip (8). A spring (11) is sleeved on the support rod (10) to push the support rod (10) and the rubber strip (8) to move out of the mounting groove (9), so that the rubber strip (8) fits tightly against the objects on both sides of the dam body (2). A water pressure plate (13) is movably installed on the upstream side of the dam body (2) via several guide rods (12). There is a gap between the water pressure plate (13) and the dam body (2), and the edges of the water pressure plate (13) are flexibly sealed to the dam body (2) via rubber rings (14). A transmission rod (15) is provided on the inner side of the water pressure plate (13), and a gear (16) is provided inside the dam body (2). The gear (16) meshes with the transmission rod (15) and one of the support rods (10). Under the action of water pressure, the water pressure plate (13) pushes the transmission rod (15) to move inward. The transmission rod (15) drives the gear (16) to rotate. The gear (16) pushes the support rod (10) and the rubber strip (8) to move outward, so that the tightness of the rubber strip (8) against the objects on both sides of the dam body (2) increases with the increase of water pressure. The hydraulic mechanism (3) is connected to the downstream side of the dam body (2) via a rotating shaft (17), and a drive disc (18) is connected to one end of the rotating shaft (17). Several protrusions (19) are evenly distributed along the circumferential direction on the drive disc (18). The end of the support rod (10) that meshes with the gear (16) is provided with a drive cylinder (20). The drive cylinder (20) has a central hole (21) and several column holes (22) distributed along the circumferential direction on the cylinder wall facing the rotating shaft (17). The drive disc (18) is located inside the drive cylinder (20) and maintains a gap with the cylinder wall facing the rotating shaft (17). The protrusions (19) extend into the column holes (22) one by one and maintain a gap with the hole wall of the column holes (22). When the hydraulic mechanism (3) extends and retracts, it drives the dam body (2) to rotate. The rotating shaft (17) rotates and drives the drive disc (18) to rotate synchronously. The protruding column (19) on the drive disc (18) slides out from the column hole (22) and squeezes the drive cylinder (20) to move a certain distance. The drive cylinder (20) pulls the support rod (10) and the rubber strip (8) to move a certain distance into the mounting groove (9), so that the rubber strip (8) is separated from the objects on both sides of the dam body (2).

2. A movable dam with hydraulic mechanism protection function according to claim 1, characterized in that, The first plate (4) and the second plate (5) are always bent toward the side away from the hydraulic mechanism (3), and the bending angle changes adaptively as the dam body (2) rotates.

3. A movable dam with hydraulic mechanism protection function according to claim 1, characterized in that, The dam body (2) is provided with a groove for the movement of the guide rod (12) and the transmission rod (15).

4. A movable dam with hydraulic mechanism protection function according to claim 1, characterized in that, The protruding post (19) and the post hole (22) are both frustum-shaped, and there are three or six of them.

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