Multi-stage height-adjustable air shield dam

Abstract

The utility model relates to the technical field of air shield dams, and discloses a multistage height-adjustable air shield dam which comprises a gate bottom plate, a shield plate is fixedly connected to the top of the gate bottom plate, a plurality of restraining belts are installed on the back face of the shield plate, an air bag is filled in the back face of the shield plate, and an overhaul well is fixedly connected to the outer wall of the left side of the gate bottom plate. A driving assembly is arranged in the overhaul well, an adjusting assembly is arranged at the bottom in the gate bottom plate and comprises a plurality of limiting hinge supports and a plurality of end fixing clamps, the limiting hinge supports are fixedly connected to the inner wall of the gate bottom plate, and rotating bottom shafts are rotationally connected into the limiting hinge supports. And a plurality of steel cable winding rollers are fixedly connected to the outer wall of the rotating bottom shaft. According to the utility model, the air shield dam control system adjusts the pressure of the air bag according to the angle measured by the inclinometer, the shield plate ascends or descends at the moment, the bottom shaft rotates to control the shield plate to synchronously extend or retract the steel rope, and the bottom shaft is locked when the designed height is reached.

Description

TECHNICAL FIELD

[0001] The utility model relates to air shield dam technical field especially relates to a multistage adjustable height air shield dam. BACKGROUND

[0002] Air shield dam is a new type of hydraulic engineering building, also known as air shield dam, it is mainly by shield plate and inflatable air bag. Shield plate is generally steel, arc, its shape design helps to better withstand water pressure. The size and thickness of the shield plate are determined according to the specific engineering requirements, for example, in large-scale water conservancy projects, the shield plate can be thicker, larger, to withstand higher water pressure. Inflatable air bag is usually made of high-strength rubber and other materials, the air bag is located below the shield plate. When the air bag is inflated, the shield plate will be lifted to form a water retaining structure, and when the air bag is exhausted, the shield plate will fall down.

[0003] Although the existing air shield dam can control the inclination angle of the shield plate to adjust the water storage height by setting the inclination instrument, under the non-design water storage height working condition, the safety restraint belt is not stressed, the shield plate is in the non-static stress state under the support force of the water pressure and the air bag, and the shield plate will move up and down within a certain range due to the small air pressure of the air bag at this time. Once the dam top overflows, vibration will be caused, and the vibration is irregular. If the gate bottom plate is uneven, the water flow velocity is uneven, the flow size is uneven, the air bag air pressure is different and the like, the shield plate top elevation will be inconsistent, the dam top overflow will also be uneven, and even individual shield plates do not overflow, which seriously affects the use of the air shield dam, especially the landscape effect. Therefore, a multistage adjustable height air shield dam is proposed. UTILITY MODEL CONTENTS

[0004] In order to make up for the above shortcomings, the utility model provides a multistage adjustable height air shield dam, which aims at improving the problem that the shield plate top elevation is inconsistent under the condition that the air bag air pressure is different in the prior art.

[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme: a multistage adjustable height air shield dam, including gate bottom plate, the gate bottom plate top is connected with shield plate, the shield plate back surface is installed with a plurality of restraint belts, the shield plate back surface is filled with air bag, the gate bottom plate left side outer wall is connected with access shaft, the access shaft is internally provided with drive assembly, the gate bottom plate inner bottom is provided with adjusting assembly.

[0006] The adjusting assembly comprises a plurality of limiting hinge supports and a plurality of end fixing clamps, the limiting hinge support is fixedly connected to the inner wall of the gate bottom plate, a rotating bottom shaft is rotatably connected to the inside of the limiting hinge support, a plurality of steel cable winding rollers are fixedly connected to the outer wall of the rotating bottom shaft, a limiting steel cable is sleeved on the outer wall of the steel cable winding roller, the end fixing clamp is fixedly connected to the back of the shield plate, and the limiting steel cable is connected between the end away from the steel cable winding roller and the end fixing clamp.

[0007] As a further description of the above technical solution:

[0008] The driving assembly comprises a motor and a locking disc, the motor is fixedly connected to the top of the manhole, the locking disc is fixedly connected to the bottom of the manhole, a transmission chain is sleeved between the motor and the locking disc, the side of the rotating bottom shaft away from the gate bottom plate is fixedly connected to the locking disc, and the side of the locking disc close to the gate bottom plate is provided with a locking assembly.

[0009] As a further description of the above technical solution:

[0010] The locking assembly comprises a telescopic air cylinder and a locking hole, the telescopic air cylinder is fixedly connected to the bottom of the manhole, the locking hole is formed on the surface of the locking disc, and the telescopic air cylinder output end is clamped with the locking hole.

[0011] As a further description of the above technical solution:

[0012] The rotating bottom shaft is composed of a plurality of steel pipes, penetrates the gate bottom plate and the manhole, and is connected between the joints through a prestressed coupling.

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

[0014] A plurality of sealing plates are fixedly connected to the top of the gate bottom plate, the sealing plate is a high-density rubber plate with an oblong hole, and the outer wall of the limiting steel cable is slidably connected to the inside of the sealing plate.

[0015] As a further description of the above technical solution:

[0016] The rotating bottom shaft is sleeved with a through-wall water stop sleeve at the outer wall penetrating the manhole.

[0017] As a further description of the above technical solution:

[0018] The prestressed coupling is composed of a left clamping disc and a right clamping disc, and is respectively installed on the two rotating bottom shafts connected in series.

[0019] As a further description of the above technical solution:

[0020] The limiting steel cable is a flexible steel cable, which can be one of a steel wire rope, a chain and a composite high-strength flexible rope.

[0021] The utility model has the advantages of the following:

[0022] The air shield dam control system adjusts the air bag pressure according to the angle measured by the inclinometer, at this time the shield plate rises or falls, at the same time the bottom shaft rotation controls its synchronous extension or retraction of the steel cable, when reaching the design height, the bottom shaft is locked, the air bag starts to fill high pressure gas according to the height, through cooperation, the air shield dam is in a balanced hyperstatic state, so that stable water storage and overflow are realized within a certain overflow range, and the designed overflow state is realized. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 A multi-stage height-adjustable air shield dam is provided in the utility model, and a perspective view of the multi-stage height-adjustable air shield dam is shown in the figure.

[0024] Figure 2 A suppression zone schematic diagram of the multi-stage height-adjustable air shield dam is provided in the utility model.

[0025] Figure 3 For Figure 2 An enlarged view of the middle A is shown in the figure.

[0026] Figure 4 For Figure 2 An enlarged view of the middle B is shown in the figure.

[0027] Figure 5 For Figure 2 An enlarged view of the middle C is shown in the figure.

[0028] Figure 6 For Figure 2 An enlarged view of the middle D is shown in the figure.

[0029] Figure 7 For Figure 2 An enlarged view of the middle E is shown in the figure.

[0030] Legend:

[0031] 1, gate bottom plate; 2, shield plate; 3, suppression zone; 4, manhole; 5, air bag; 6, motor; 7, locking disc; 8, transmission chain; 9, rotating bottom shaft; 10, through-wall water stop sleeve; 11, steel cable winding roller; 12, limiting steel cable; 13, prestressed coupling; 14, end fixing clamp; 15, sealing plate; 16, telescopic air cylinder; 17, limiting hinged support; 18, locking hole. DETAILED DESCRIPTION

[0032] Clearly, the described embodiments are merely a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the present application.

[0033] With reference to Figures 1-3 The utility model provides an embodiment: a kind of multistage adjustable height air shield dam, including gate sill 1, gate sill 1 as the basis support structure of entire air shield dam, gate sill 1 top is fixedly connected with shield plate 2, shield plate 2 is the key component of air shield dam blocking water flow, withstands larger pressure under the action of water flow, shield plate 2 back is equipped with multiple suppression zone 3, suppression zone 3 can play the role of auxiliary constraint and stability to shield plate 2 during the operation of air shield dam, reduce the excessive shaking or deformation of shield plate 2, enhance the stability of entire structure, shield plate 2 back is filled with air bag 5, air bag 5 can change self volume by inflation or deflation, to adjust the buoyancy and support force that shield plate 2 suffers, to realize the adjustment of air shield dam height, gate sill 1 left side outer wall is fixedly connected with manhole 4, manhole 4 provides convenient operating space for the maintenance and overhaul of air shield dam internal equipment, drive assembly is provided in manhole 4, drive assembly is the power source of realizing air shield dam height adjustment action, adjusting assembly is provided in the bottom of gate sill 1, adjusting assembly can accurately control the lifting height of shield plate 2 under the driving of drive assembly, to adapt to different water flow conditions and engineering needs;

[0034] With reference to Figures 5-7 Adjusting assembly includes multiple limit hinge supports 17 and multiple end fixed clamps 14, limit hinge support 17 is fixedly connected in the inner wall of gate sill 1, limit hinge support 17 is fixedly connected in the inner wall of gate sill 1, and its role is to provide stable rotating support point for rotating bottom shaft 9, to ensure that rotating bottom shaft 9 does not deviate or shake during rotation, to ensure the accuracy and reliability of adjustment action. Rotating bottom shaft 9 is rotatably connected in limit hinge support 17, a plurality of steel cable winding rollers 11 are fixedly connected to the outer wall of rotating bottom shaft 9, and rotating bottom shaft 9 is the core transmission component of adjusting assembly, and a plurality of steel cable winding rollers 11 are fixedly connected to the outer wall of rotating bottom shaft 9. When rotating bottom shaft 9 rotates, it can drive steel cable winding roller 11 to rotate synchronously. Limit steel cable 12 is sleeved on the outer wall of steel cable winding roller 11, end fixed clamp 14 is fixedly connected to the back of shield plate 2, and limit steel cable 12 is connected between the end away from steel cable winding roller 11 and end fixed clamp 14. By rotating bottom shaft 9 driving steel cable winding roller 11 to rotate, the winding or unwinding operation of limit steel cable 12 is realized. Since limit steel cable 12 is connected with end fixed clamp 14 on the back of shield plate 2, shield plate 2 is pulled or loosened, and the purpose of adjusting the height of air shield dam is achieved.

[0035] With reference to Figure 3 And Figure 4 , the drive assembly includes a motor 6 and a locking disc 7, the motor 6 is fixedly connected to the top of the manhole 4, the motor 6 is fixedly connected to the top of the manhole 4, the motor 6 serves as a driving source, which can convert electrical energy into mechanical energy to provide power for the entire adjustment process, the locking disc 7 is fixedly connected to the bottom of the manhole 4, the motor 6 and the locking disc 7 are sleeved with a transmission chain 8, the transmission chain 8 can effectively transmit the power generated by the motor 6 to the locking disc 7, and the stability and reliability of power transmission are ensured. The rotating bottom shaft 9 is fixedly connected to the side of the locking disc 7 away from the gate bottom plate 1, when the locking disc 7 rotates under the drive of the transmission chain 8, it can synchronously drive the rotating bottom shaft 9 to rotate, so as to start the adjustment assembly to work, the side of the locking disc 7 close to the gate bottom plate 1 is provided with a locking assembly, which can fix the locking disc 7 after the height of the air shield dam is adjusted to the appropriate position, prevent it from rotating accidentally, so as to ensure the stability of the height of the air shield dam.

[0036] With reference to Figure 4 , the locking assembly includes a telescopic air cylinder 16 and a locking hole 18, the telescopic air cylinder 16 is fixedly connected to the bottom of the manhole 4, the telescopic air cylinder 16 can perform telescopic action after receiving the control signal, the locking hole 18 is opened on the surface of the locking disc 7, the telescopic air cylinder 16 is clamped between the output end and the locking hole 18, after the height adjustment of the air shield dam is completed, the telescopic air cylinder 16 is extended, its output end is inserted into the locking hole 18, the locking disc 7 is tightly locked, which prevents it from rotating due to external factors, effectively ensures the stability and safety of the air shield dam at the set height.

[0037] With reference to Figures 4-6 , the rotating bottom shaft 9 is composed of multiple steel pipes, which is convenient for processing, transportation and installation of the rotating bottom shaft 9, and penetrates the gate bottom plate 1 and the manhole 4, so that it can play a coherent transmission role in the entire air shield dam structure, the joints are connected through prestressed couplings 13, the prestressed couplings 13 can effectively transmit torque and apply prestress at the connection part to enhance the fastening and reliability of the connection. In the device, due to the relatively long length of the steel pipe, the rotating angle of different parts may not be consistent during rotation. For example, when the rotating operation is started, the steel pipe near the end may have rotated 6 times, while the farthest end of the shaft only rotates 1 time. By using the prestressed coupling 13, as the rotation continues, the deformation amount of each part will increase in turn until synchronous rotation is finally achieved. The integrity and stability of the rotating bottom shaft 9 during rotation are ensured, thereby ensuring the accuracy and continuity of the height adjustment of the air shield dam.

[0038] With reference to Figure 5The top of the gate bottom plate 1 is fixedly connected with a plurality of sealing plates 15, the sealing plate 15 is a high-density rubber plate with a long circular hole, the outer wall of the limiting steel cable 12 is slidably connected in the sealing plate 15, and the main function of the sealing plate 15 is to seal and protect the limiting steel cable 12. Because the air shield dam will contact a large amount of water in the operation process, the sealing plate 15 can prevent the mud and silt from entering the space of the rotating bottom shaft 9, so as to avoid damaging the internal equipment, and meanwhile, the design of the long circular hole can ensure that the limiting steel cable 12 can slide smoothly therein, so that the movement of the limiting steel cable 12 is not hindered, and the adjusting assembly can work normally.

[0039] Referring to Figure 4 The rotating bottom shaft 9 penetrates the outer wall of the inspection shaft 4 and is sleeved with a wall-penetrating water stop sleeve 10, the wall-penetrating water stop sleeve 10 can effectively prevent water from leaking into the inside of the inspection shaft 4 from the penetration of the rotating bottom shaft 9 and the inspection shaft 4, so as to avoid that the equipment in the inspection shaft 4 is damaged due to water leakage, and ensure that the inside of the inspection shaft 4 is dry and the equipment is normally operated.

[0040] Referring to Figure 6 The prestressed coupling 13 is composed of a left clamping disc and a right clamping disc, and is respectively installed on the two sections of the rotating bottom shaft 9 connected in series, and realizes the close connection between the sections of the rotating bottom shaft 9 through the clamping mode, can efficiently transmit the torque, and further enhances the stability of the connection under the action of the prestress.

[0041] Referring to Figures 5-7 The limiting steel cable 12 is a flexible steel cable, which can be one of a steel wire rope, a chain and a composite high-strength flexible rope, different types of flexible steel cables can be selected, the most suitable steel cable material can be selected flexibly according to the specific design requirements of the air shield dam, the use environment and the engineering budget and other factors, so as to meet the stable operation and high adjustment requirements of the air shield dam under different working conditions.

[0042] Working principle: when the height of the air shield dam needs to be adjusted, the motor 6 is powered on, the motor 6 generates rotation after being powered on, the locking disc 7 is driven to rotate by the transmission chain 8 when the motor 6 rotates, the rotating bottom shaft 9 is driven to rotate by the locking disc 7, the steel cable winding roller 11 is wound or loosened when the rotating bottom shaft 9 rotates, the limiting steel cable 12 is wound or loosened, and the height of the shield plate 2 is adjusted by the end fixed clamp 14, after the adjustment is completed, the extension and retraction air cylinder 16 is driven by the air exhaust system of the air shield dam, so that the extension and retraction air cylinder 16 extends and is clamped with the locking hole 18 on the surface of the locking disc 7, and the locking disc 7 is limited.

[0043] Finally, it should be noted that: the above only for the preferred embodiments of the present application, and is not intended to limit the present application, although the foregoing embodiments of the present application has been described in detail, for the skilled in the art, it still can be modified, or for part of the technical features of the equivalent replacement, the spirit and principles of the present application, made any modification, equivalent replacement, improvement, etc., should be included within the scope of the present application.

Claims

1. A multi-stage height-adjustable air dam, comprising a gate bottom plate (1), characterized in that: The bottom plate (1) top fixed connection has the shield (2), the shield (2) back is installed with multiple suppression zone (3), the shield (2) back is filled with air bag (5), the bottom plate (1) left side outer wall fixed connection has the inspection well (4), the inspection well (4) inside is provided with drive assembly, the bottom plate (1) inner bottom is provided with adjusting assembly; The adjusting assembly includes a plurality of limit hinge supports (17) and a plurality of end fixed clamps (14), the limit hinge support (17) is fixedly connected to the inner wall of the bottom plate (1), the limit hinge support (17) is rotatably connected with a rotating bottom shaft (9) inside, the rotating bottom shaft (9) is fixedly connected with a plurality of steel cable winding rollers (11) outside, the steel cable winding roller (11) is sleeved with a limit steel cable (12) outside, the end fixed clamp (14) is fixedly connected to the back of the shield (2), and the end of the limit steel cable (12) away from the steel cable winding roller (11) is connected with the end fixed clamp (14).

2. A multi-stage height adjustable air dam according to claim 1, wherein: The drive assembly includes a motor (6) and a locking disc (7), the motor (6) is fixedly connected to the inner top of the inspection well (4), the locking disc (7) is fixedly connected to the inner bottom of the inspection well (4), the motor (6) and the locking disc (7) are sleeved with a transmission chain (8), the side of the rotating bottom shaft (9) away from the bottom plate (1) is fixedly connected to the locking disc (7), and the side of the locking disc (7) close to the bottom plate (1) is provided with a locking assembly.

3. A multi-stage height adjustable air dam according to claim 2, wherein: The locking assembly includes a telescopic air cylinder (16) and a locking hole (18), the telescopic air cylinder (16) is fixedly connected to the inner bottom of the inspection well (4), the locking hole (18) is formed in the surface of the locking disc (7), and the telescopic air cylinder (16) is clamped between the output end and the locking hole (18).

4. A multi-stage height adjustable air dam according to claim 1, wherein: The rotating bottom shaft (9) is composed of a plurality of steel pipes, which penetrates the bottom plate (1) and the inspection well (4), and the joints are connected by a prestressed coupling (13).

5. A multi-stage height adjustable air dam according to claim 1, wherein: The top of the bottom plate (1) is fixedly connected with a plurality of sealing plates (15), the sealing plate (15) is a high-density rubber plate with an oblong hole, and the outer wall of the limit steel cable (12) is slidably connected in the sealing plate (15).

6. A multi-stage height adjustable air dam according to claim 1, wherein: The rotating bottom shaft (9) penetrates the outer wall of the inspection well (4) and is sleeved with a through-wall water stop sleeve (10).

7. A multi-stage height adjustable air dam according to claim 4, wherein: The prestressed coupling (13) is composed of a left clamping disc and a right clamping disc, which are respectively installed on the two adjacent rotating bottom shafts (9).

8. A multi-stage height adjustable air dam according to claim 1, wherein: The limit steel cable (12) is a flexible steel cable, which can be one of steel wire rope, chain and composite high-strength flexible rope.

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