Gate vibration reduction device and gate

Abstract

The present invention discloses a gate vibration reduction device and a gate, the gate vibration reduction device comprises: a mounting portion for mounting on the gate; a first slide groove is provided on the end surface of the mounting portion opposite to the gate groove; a vibration reduction mechanism, the vibration reduction mechanism comprises a sliding member and an elastic member arranged in the first slide groove, one end of the sliding member extends out of the first slide groove and is used to abut against the inner wall of the gate groove, an accommodation space is formed between the other end of the sliding member and the bottom wall of the first slide groove, the elastic member is placed in the accommodation space, and when the inner wall of the gate groove abuts against the sliding member, the sliding member can be driven to slide into the first slide groove and compress the elastic member. Thus, the sliding member compresses the elastic member to form a pre-pressure, and the spring rebounds during the vibration of the gate to play a role of damping and shock reduction, thereby effectively solving the vibration problem caused by the gate contacting with moving water in the prior art.

Description

Technical Field

[0001] The invention relates to the technical field of underwater gate design, and in particular to a gate vibration reduction device and a gate. Background Art

[0002] The gate is a key part of the sluice gate, which is used to close and open the sluice gate opening to achieve the purpose of controlling the amount of water. At present, in water conservancy and hydropower projects, plane gates are widely used in various hydraulic structures and other occasions due to their compact layout, easy manufacturing, and convenient maintenance. The basic size of the plane gate is determined according to the size of the opening. The ends of the sluice gate on the left and right sides of the opening are provided with U-shaped gate grooves extending from the height direction of the sluice gate to the upper end surface of the sluice gate. When the gate is closed, the left and right ends of the plane gate are inserted into the corresponding U-shaped gate grooves, and then slowly fall down to close the sluice gate opening.

[0003] When the gate is opened and closed or partially opened to release water, the water flow in the flow channel, especially in the gate slot, is turbulent and the flow pattern is complex, which may cause vibrations in the upstream and downstream directions and the left and right directions of the gate, and in severe cases, may cause damage to the gate. The long-term vibration of the gate will cause fatigue damage to the gate structure at the least, and will cause cracks in other hydraulic structures and even foundation settlement at the worst. Therefore, as an important water retaining and water discharge device in water conservancy and hydropower projects, ensuring the reliability of its structure is crucial to ensure the safe and effective operation of the project. The vibration of the gate is usually related to factors such as the gate opening, the water jump behind the gate, the water stop leakage, and the bottom edge type of the gate. The reasons for the vibration of the gate are complex, but generally speaking, it is caused by the action of dynamic water. Engineering practice has proved that when the gate is releasing water or when the gate is affected by water flow during dynamic water operation, it will vibrate to varying degrees. In general, the vibration is relatively weak and will not affect the safe operation of the gate. However, under certain conditions, the gate will vibrate strongly, and even resonate or become dynamically unstable. The most harmful is the resonance of the gate structure under special hydrodynamic loads. At present, optimizing the dynamic characteristics of the gate structure and keeping the low-frequency area of ​​the gate structure away from the high-energy area of ​​the hydrodynamic load has become an important way to control and avoid harmful vibrations of the gate. However, the above measures are all measures taken to avoid strong vibrations of the gate. When the gate contacts the moving water, it will always vibrate.

[0004] At present, reverse support is mainly used to suppress the reverse vibration of the gate, such as setting a hinged reverse elastic slider (wheel) or a leaf spring device with a composite slider. In a water flow environment with a lot of sediment or dirt, dirt or coarse sediment can easily enter the hinged part of the hinged reverse elastic slider (wheel) or hang on the leaf spring, affecting its effect. In addition, the deformation reaction force of the above elastic device cannot be accurately calculated and mostly relies on experience. In engineering practice, it has occurred that due to the light weight of the gate and the excessive reaction force of the elastic device, the supporting friction resistance is greater than the gate's own weight, resulting in the gate being unable to fall.

[0005] Furthermore, the existing technical solutions only consider the vibration reduction in the upstream and downstream directions of the gate, and do not consider the lateral vibration reduction measures of the gate. In addition, for gates that may accidentally withstand reverse water pressure (such as the accident gate valve of the tail chamber in the long tailwater tunnel of a pumped storage power station, which may accidentally withstand water pressure from the upper reservoir), the current gate design does not consider the vibration reduction measures for this situation. Summary of the invention

[0006] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art, provide a gate vibration reduction device which is reliable in operation, has a long service life and can effectively suppress gate vibration, and correspondingly provide a gate having the gate vibration reduction device.

[0007] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0008] A gate vibration reduction device, comprising:

[0009] A mounting portion for mounting on a gate; a first sliding groove is provided on the end surface of the mounting portion opposite to the gate groove;

[0010] A vibration damping mechanism, the vibration damping mechanism includes a sliding member and an elastic member arranged in the first sliding groove, one end of the sliding member extends out of the first sliding groove and is used to abut against the inner wall of the door groove, and an accommodation space is formed between the other end of the sliding member and the bottom wall of the first sliding groove. The elastic member is placed in the accommodation space, and when the inner wall of the door groove abuts against the sliding member, the sliding member can be driven to slide into the first sliding groove and compress the elastic member.

[0011] As a result, the sliding part compresses the elastic part to form pre-pressure, and the spring rebounds during the vibration of the gate to play a damping and shock-absorbing role, thereby effectively solving the vibration problem caused by the contact of the gate with moving water in the prior art; in addition, for the gate that may be subjected to reverse water pressure, the reverse water pressure acts on the gate body and is transmitted to the sliding part to compress the elastic body to make the gate retreat, and the gate water seal separates from the gate groove water stop surface to release pressure, so as to protect the safety of the gate structure.

[0012] In addition, the elastic part is located in a closed accommodating space, which can prevent coarse mud and other dirt from entering the working space of the elastomer, avoid affecting the working effect of the elastomer, and extend the service life of the elastomer; and the deformation reaction force of the elastomer can be accurately calculated according to its compression distance, so that the elastomer can be accurately configured according to the characteristics of the gate, ensuring that the gate design is reasonable.

[0013] As a further improvement of the above technical solution:

[0014] As a specific structural form of the sliding member, the sliding member is a roller, and the roller is mounted on an axle; the first sliding groove and the inner wall corresponding to the two ends of the axle are provided with a second sliding groove, and the second sliding groove extends along the sliding direction of the sliding member, and the two ends of the axle are slidably arranged in the corresponding second sliding groove. The second sliding groove improves the precise guiding effect for the sliding of the roller.

[0015] The roller is preferably a self-lubricating engineering plastic alloy MGB roller or a 2Cr13 wheel axle, which is a point contact hyperbolic roller, which can adapt to the deflection deformation in the gate support direction and eliminate manufacturing and installation defects (such as deformation and deflection).

[0016] The elastic part can be selected from cylindrical helical compression springs, butterfly springs or hollow cylindrical polyurethane elastomers according to the gate operating environment, the size of the supporting force required for the reverse lateral support and the required compression stroke.

[0017] As a specific structural form of the elastic member, the elastic member is a spring, and the axial direction of the spring is consistent with the sliding direction of the sliding member.

[0018] In order to guide the elastic deformation of the spring, the spring is inserted into a guide rod, a through hole penetrating the mounting portion is opened on the bottom wall of the first slide groove, one end of the guide rod passes through the through hole and extends out of the first slide groove, and the other end of the guide rod is connected to the wheel axle through a connecting component.

[0019] In order to further enclose the elastic member in its working space, the connecting assembly is arranged in the first slide groove, and the connecting assembly includes a sealing plate fixedly connected to the guide rod, and guide plates respectively connected to the two ends of the sealing plate along the axial direction of the wheel axle, the sealing plate is used to close the accommodating space, and the guide plate extends along the sliding direction of the sliding member to be connected to the wheel axle.

[0020] The end of the guide rod extending out of the through hole is sleeved with a limiting member to prevent the end of the guide rod from retreating into the first sliding groove.

[0021] The end of the mounting portion close to the sliding member is sleeved with a mounting plate for connecting with the gate, and mounting holes are arranged around the mounting plate.

[0022] A bolt is passed through the mounting hole, a nut and an adjusting gasket are passed through one end of the bolt facing away from the door slot, and the adjusting gasket is arranged between the nut and the mounting plate.

[0023] The pre-pressure of the elastic body can be adjusted by adjusting the gasket to make the gate evenly stressed in all directions, which can effectively absorb the vibration generated by the horizontal vibration of the gate and protect the safety of the gate structure.

[0024] As a general inventive concept, the present invention also provides a gate having a plurality of gate vibration reduction devices as described above, wherein a portion of the roller in the gate vibration reduction device is located between the gate and the inner wall of the gate slot, and the sliding member abuts against the inner wall of the gate slot.

[0025] As a further improvement of the above technical solution:

[0026] A plurality of gate vibration reduction devices are arranged on the back water surface, the front water surface and / or the side end surface of the gate.

[0027] The compression stroke of the elastic part on the water-facing surface is 40 to 60 mm, and the pre-compression is 20 to 30 mm; the compression stroke of the elastic part on the side end surface is 20 to 30 mm, and the pre-compression is 10 to 15 mm.

[0028] Compared with the prior art, the advantages of the present invention are:

[0029] 1. The present invention places the elastic member in the space enclosed by the mounting portion and the connecting assembly, which can prevent coarse mud and other dirt from entering the working space of the elastic body, avoid affecting the working effect of the elastic body, and extend the service life of the elastic body; the deformation reaction force of the elastic body can be accurately calculated, and the elastic body can be accurately configured according to the characteristics of the gate to ensure that the gate design is reasonable; in addition, the roller components and the like are made of materials with anti-corrosion properties, which adapt to the complex underwater environment and reduce the number of maintenance and replacement times.

[0030] 2. The pre-pressure of the elastic part can be adjusted by adjusting the gasket to make the gate evenly stressed in all directions, which can effectively absorb the vibration generated by the horizontal vibration of the gate and protect the safety of the gate structure.

[0031] 3. After pre-compression, the elastic part still has a compression margin of 20 to 30 mm. For gates that may be subjected to reverse water pressure, the reverse water pressure acts on the gate body and is transmitted to the reverse elastic roller support device to compress the elastic body to make the gate retreat. The gate water seal is separated from the gate groove water stop surface to release pressure to protect the safety of the gate structure.

[0032] 4. The present invention has a simple structure, is easy to install, and is reasonable and reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a schematic diagram of the three-dimensional structure of the gate vibration reduction device of the present invention.

[0034] Figure 2 This is a schematic cross-sectional structure diagram of the gate vibration reduction device of Example 1.

[0035] Figure 3 It is a schematic diagram of the longitudinal section structure of the gate vibration reduction device of Example 1.

[0036] Figure 4It is a top view schematic diagram of the gate of the present invention after installation.

[0037] Figure 5 It is a schematic diagram of the three-dimensional structure of the gate of the present invention.

[0038] Figure 6 This is a schematic cross-sectional structure diagram of the gate vibration reduction device of Example 2.

[0039] Figure 7 It is a schematic diagram of the longitudinal section structure of the gate vibration reduction device of Example 2.

[0040] Legend: 1. Mounting part; 11. First slide groove; 12. Second slide groove; 13. Through hole; 14. Mounting plate; 15. Bolt; 16. Nut; 17. Adjusting gasket; 2. Vibration reduction mechanism; 21. Sliding member; 22. Elastic member; 23. Axle; 24. Guide rod; 25. Closing plate; 26. Guide plate; 27. Limiting member; 28. Pad; 29. ​​Spacer ring; 3. Gate; 31. Panel; 32. Side seat plate; 4. Door groove. DETAILED DESCRIPTION

[0041] The present invention is further described below in conjunction with specific preferred embodiments, but the protection scope of the present invention is not limited thereby.

[0042] Embodiment 1:

[0043] like Figure 1 As shown, the gate vibration reduction device of this embodiment includes a mounting portion 1 and a vibration reduction mechanism 2. Figure 4 and 5 As shown, the mounting portion 1 is mounted on the gate 3 , and the vibration reduction mechanism 2 is used to buffer the impact of the inner wall of the door slot 4 on the gate 3 during the vibration of the gate 3 .

[0044] like Figure 1 As shown, in this embodiment, the mounting portion 1 is a cubic box-type structure with a side opening. When installed, the side opening is arranged opposite to the door slot 4, and the inner cavity of the mounting portion 1 forms a first slide slot 11. The mounting portion 1 is provided with a mounting plate 14 connected to the gate at the end facing the door slot 4, and mounting holes are provided around the mounting plate 14. Bolts 15 are passed through the mounting holes, and a nut 16 and an adjustment gasket 17 are passed through the end of the bolt 15 facing away from the door slot, and the adjustment gasket 17 is arranged between the nut 16 and the mounting plate 14.

[0045] The vibration damping mechanism 2 includes a sliding member 21 and an elastic member 22 arranged in the first slide groove 11. One end of the sliding member 21 extends out of the first slide groove 11 and is used to abut against the inner wall of the door groove 4. An accommodating space is formed between the other end of the sliding member 21 and the bottom wall 111 of the first slide groove 11. The elastic member 22 is placed in the accommodating space. When the inner wall of the door groove 4 abuts against the sliding member 21, the sliding member 21 can be driven to slide into the first slide groove 11 and compress the elastic member 22.

[0046] like Figure 2 and 3 As shown, in this embodiment, the sliding member 21 is a roller, and the roller is installed on an axle 23; second sliding grooves 12 are opened on the inner walls corresponding to the first sliding groove 11 and the two ends of the axle 23, and the second sliding grooves 12 extend along the sliding direction of the sliding member 21, and the two ends of the axle 23 are slidably arranged in the corresponding second sliding grooves 12.

[0047] The rollers include an engineering plastic alloy MGB roller 211 and a 2Cr13 axle 212. The roller material has the characteristics of self-lubrication, strong load-bearing capacity, and corrosion resistance. There is no need to set bearings, which reduces the probability of failure, can adapt to complex underwater environments, and reduce the number of maintenance and replacements. The rollers are point-contact hyperbolic rollers, which can adapt to the deflection deformation in the gate support direction and eliminate manufacturing and installation defects (such as deformation and deflection).

[0048] The elastic member 22 can be selected from a cylindrical helical compression spring, a butterfly spring or a polyurethane elastomer according to the gate operating environment, the size of the supporting force required for the reverse lateral support and the required compression stroke.

[0049] like Figure 2 and 3 As shown, in this embodiment, the elastic member 22 is a spring that is inserted into a guide rod 24, and the axial direction of the spring is consistent with the sliding direction of the slide member 21. A through hole 13 that penetrates the mounting portion 1 is provided on the bottom wall 111 of the first slide groove 11, one end of the guide rod 24 passes through the through hole 13 and extends out of the first slide groove 11, and the other end of the guide rod 24 is connected to the wheel shaft 23 through a connecting assembly.

[0050] The connecting assembly is arranged in the first chute 11, and includes a sealing plate 25 fixedly connected to the guide rod 24, and guide plates 26 respectively connected to both ends of the sealing plate 25 along the axial direction of the wheel axle 23, and the guide plates 26 extend along the sliding direction of the slide 21 to connect with the wheel axle 23. The end of the wheel axle 23 passes through the corresponding guide plate 26 and then slides in the second chute 12. The other end of the guide plate 26 extends a certain length, and the guide plate 26 is arranged close to the side wall of the first chute 11. The sealing plate 25, the two guide plates 26, and the bottom wall and side wall of the first chute 11 enclose a closed space, which can prevent coarse sand and other dirt from entering the working space of the elastic body, avoiding affecting the working effect of the elastic body.

[0051] A pad 28 is provided on the end surface of the sealing plate 25 opposite to the spring, and a pad 28 is also provided on the bottom wall of the first chute 11. Both ends of the spring abut against the corresponding pads to reduce the wear of the spring. A spacer ring 29 is provided between the roller and the guide plate 26 to prevent sludge from clogging the gap between the roller and the guide plate 26.

[0052] In addition, a stopper 27 is sleeved on the end of the guide rod 24 extending out of the through hole 13 to prevent the end of the guide rod 24 from retreating into the first chute 11. The stopper 27 is a nut, and a thread matching the nut is provided on the circumferential surface of the end of the guide rod 24.

[0053] like Figure 4 and 5 As shown, the gate vibration reduction device is installed on the back water surface, the front water surface and the side end surface of the gate 3 through the mounting plate 14. Specifically, the back water surface and the front water surface of the side end of the gate 3 are extended by a certain distance relative to the side end surface, thereby forming a certain accommodation space, in which a plurality of side seat plates 32 connecting the back water surface, the front water surface and the side end surface are arranged from top to bottom. This part is stuck in the door groove 4. The extended part of the back water surface or the front water surface is provided with an accommodation hole for the installation part 1 to pass through, the opening end of the installation part 1 faces the door groove 4, and the other end passes through the accommodation hole and is placed in the above-mentioned accommodation space, and the gate vibration reduction device is fixedly connected to the back water surface or the front water surface through the mounting plate 14 and the bolt fastener. The side gate vibration reduction device is installed as follows: the opening end of the mounting part 1 faces the door groove 4, and the other end is placed in the above-mentioned accommodation space, and the upper and lower ends of the mounting plate 14 are respectively fixedly connected to the two adjacent side seat plates by bolts. The spring preload generated by the compression spring on the inner wall of the door groove 4 can be adjusted by adjusting the gasket.

[0054] After the two side ends of the gate 3 are inserted into the door slot 4, the sliding member 21 abuts against the inner wall of the door slot 4 to drive the sliding member 21 to slide into the first sliding slot 11 and compress the spring, thereby providing pre-pressure to the spring.

[0055] A certain number of adjusting gaskets 17 of different thicknesses are installed between the plane gate panel 31 (including the back water surface and the front water surface) or the side seat plate 32 and the nut 16, so that when the gate vibration reduction device is installed on the gate leaf and the gate 3 is inserted into the door groove 4, the distance that the roller protrudes from the gate panel after the spring pre-compression is equal to the designed distance between the surface of the gate leaf panel or the side seat plate and the track surface of the gate groove embedded part, and the elastic force generated by the spring pre-compression presses the gate 3 onto the door groove embedded part.

[0056] The connecting assembly is inserted into the first slide groove 11, and the elastic member 22 is located in the closed space formed by the connecting assembly and the mounting portion 1, which can effectively prevent coarse sand and dirt from entering and avoid affecting the elastic force of the elastic body.

[0057] A more specific solution is to combine Figure 2 In this embodiment, the spring is a rectangular cross-section cylindrical helical compression spring. The free height of the compression spring of the gate vibration reduction device on the panel is 300mm, the compression stroke is 60mm, and the pre-compression is 30mm; the compression spring height of the lateral gate vibration reduction device is 100mm, the compression stroke is 20mm, and the pre-compression is 10mm.

[0058] A more specific solution is that 6 groups of gate vibration reduction devices are arranged on the panel (3 groups on each side); and 4 groups of lateral gate vibration reduction devices are arranged (2 groups on each side).

[0059] Embodiment 2:

[0060] The structure of the gate vibration reduction device of this embodiment is basically the same as that of the embodiment 1, except that: Figure 6 and 7 As shown, the elastic member 22 is a compression spring made of a hollow cylindrical polyurethane material, which has high elasticity and good corrosion resistance; the gate vibration reduction device on a single panel is provided with three elastomers connected in series, each of which has a free height of 100mm, and the total compression stroke after the three are connected in series is 60mm, with a pre-compression of 30mm; a single lateral gate vibration reduction device is provided with one elastomer, the height of the elastomer is 100mm, the compression stroke is 20mm, and the pre-compression is 10mm.

[0061] A more specific solution is to combine Figure 5 According to the area of ​​the plane gate and the size of the water head it bears, 8 groups of gate vibration reduction devices are set on the panel (4 groups on each side); 4 groups of lateral gate vibration reduction devices are set (2 groups on each side).

[0062] The above is only a preferred embodiment of the present application and does not constitute any form of limitation to the present application. Although the present application is disclosed as a preferred embodiment as above, it is not intended to limit the present application. Any technician familiar with the profession, without departing from the scope of the technical solution of the present application, using the technical content disclosed above to make slight changes or modifications are equivalent to equivalent implementation cases and fall within the scope of the technical solution.

Claims

1. A gate vibration reduction device, characterized in that: include: A mounting portion (1) for mounting on a gate (3); a first sliding groove (11) is provided on the end surface of the mounting portion (1) opposite to the gate groove (4); A vibration damping mechanism (2), the vibration damping mechanism (2) comprising a sliding member (21) and an elastic member (22) arranged in the first slide groove (11), one end of the sliding member (21) extending out of the first slide groove (11) and being used to abut against the inner wall of the door groove (4), an accommodation space being formed between the other end of the sliding member (21) and the bottom wall (111) of the first slide groove (11), the elastic member (22) being arranged in the accommodation space, a connecting component being arranged in the first slide groove (11), the elastic member (22) being arranged in a space enclosed by the mounting portion (1) and the connecting component, the mounting portion (1) and the connecting component preventing dirt from entering the elastic member (22), and when the inner wall of the door groove (4) abuts against the sliding member (21), the sliding member (21) can be driven to slide into the first slide groove (11) and compress the elastic member (22); The connecting assembly comprises a sealing plate (25) fixedly connected to the guide rod (24), and guide plates (26) respectively connected to both ends of the sealing plate (25) along the axial direction of the wheel axle (23), the sealing plate (25) being used to close the accommodating space, and the guide plates (26) extending along the sliding direction of the sliding member (21) to be connected to the wheel axle (23); A spacer ring (29) is provided between the sliding member (21) and the guide plate (26) to prevent sludge from being blocked in the gap between the sliding member (21) and the guide plate (26); the elastic member (22) is a spring or a polyurethane elastomer; the compression direction of the elastic member (22) is consistent with the sliding direction of the sliding member (21); the sliding member (21) is a roller, and the roller is mounted on a wheel shaft (23); Second sliding grooves (12) are respectively provided on the inner walls corresponding to the first sliding groove (11) and the two ends of the wheel axle (23); the second sliding grooves (12) extend along the sliding direction of the sliding member (21); and the two ends of the wheel axle (23) are slidably arranged in the corresponding second sliding grooves (12); The spring is inserted into a guide rod (24); a through hole (13) penetrating the mounting portion (1) is provided on the bottom wall (111) of the first slide groove (11); one end of the guide rod (24) passes through the through hole (13) and extends out of the first slide groove (11); the other end of the guide rod (24) is connected to the wheel shaft (23) through a connecting assembly; The other end of the guide plate (26) extends a certain length, and the guide plate (26) is arranged close to the side wall of the first chute (11). The sealing plate (25), the two guide plates (26), and the bottom wall and side walls of the first chute (11) form a closed space, which can prevent coarse mud and other dirt from entering the working space of the elastomer.

2. The gate vibration reduction device according to claim 1, characterized in that: The end of the guide rod (24) extending out of the through hole (13) is sleeved with a limiting member (27) for preventing the end of the guide rod (24) from retreating into the first sliding groove (11).

3. A gate, characterized in that: The gate (3) is provided with a plurality of gate vibration reduction devices according to any one of claims 1 and 2, a portion of the roller in the gate vibration reduction device is located between the gate (3) and the inner wall of the gate slot (4), and the sliding member (21) abuts against the inner wall of the gate slot (4); The mounting portion (1) is sleeved with a mounting plate (14) connected to the gate towards the end of the gate groove (4); mounting holes are provided around the mounting plate (14); the gate vibration reduction device is fixedly connected to the back water surface or the front water surface of the gate through the mounting plate (14) and bolt fasteners; a plurality of gate vibration reduction devices are arranged on the back water surface, the front water surface and / or the side end surface of the gate (3); The back-water surface and the front-water surface of the side end of the gate (3) are extended to form an accommodation space. A plurality of side seat plates (32) are arranged from top to bottom in the accommodation space to connect the back-water surface, the front-water surface and the side end surface. This part is inserted into the gate groove (4). An accommodation hole is provided in the extended part of the back-water surface or the front-water surface for the installation part (1) to pass through. The opening end of the installation part (1) faces the gate groove (4), and the other end passes through the accommodation hole and is placed in the accommodation space.

4. The gate according to claim 3, characterized in that: A bolt (15) is passed through the mounting hole, a nut (16) and an adjustment gasket (17) are passed through one end of the bolt (15) facing away from the door slot, and the adjustment gasket (17) is arranged between the nut (16) and the mounting plate (14).

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