A quick gate closure braking device

Abstract

This invention provides a rapid gate closing braking device, including a dual-shaft extension motor, one output shaft of which is connected to a drum, and a hydraulic braking mechanism. The hydraulic braking mechanism includes an oil tank, a first oil pipe, a solenoid valve, and a hydraulic pump. The oil tank contains hydraulic oil, and the first oil pipe is connected to the oil tank to form a hydraulic circuit. The solenoid valve closes when energized and opens when de-energized. The solenoid valve is located at the outlet of the oil tank. The hydraulic pump is located on the hydraulic circuit below the oil tank, and its drive shaft is connected to one output shaft of the dual-shaft extension motor. A throttle valve is located on the hydraulic circuit, and an auxiliary braking mechanism is also provided. The rapid gate closing braking device provided by this invention has a simple structure, fast response, high reliability, and can be used in any operating state of the gate.

Description

Technical Field

[0001] This invention belongs to the technical field of water conservancy machinery and equipment, and specifically relates to a fast gate closing braking device. Background Technology

[0002] Gates are commonly used auxiliary equipment in water conservancy projects such as sluices, dams, and pumping stations, used to close and open waterways. According to current "Pumping Station Design Standards," gates must be able to quickly close and cut off water flow after normal pump shutdown and power outages to prevent pump runaway (meaning the unit experiences severe reverse rotation due to reverse water flow impact); otherwise, runaway can lead to bearing failure, impact on the generator rotor, loosening, breakage, and plastic deformation of connecting parts, causing serious mechanical damage and reducing the unit's lifespan. Furthermore, to prevent damage to the sill bottom and gate body due to backlash, the speed at which the gate descends to the sill bottom must be controlled to not exceed 5 m / min.

[0003] Utility model patent CN 211113498 U discloses a hydraulic damping speed regulating device for rapid gate closing, used for gate braking during emergency descent. However, the following technical problems exist in practical use: The device's ability to function properly during closing depends entirely on the clutch's engagement to connect the gate and hydraulic pump. This operation requires precise coordination between clutch components, resulting in low fault tolerance and unreliability. Furthermore, if a power outage occurs while the gate is rising or falling, the clutch remains rotating, making engagement even more difficult, rendering the device unusable in some cases. Summary of the Invention

[0004] To address the above technical problems, the present invention provides a fast gate closing braking device. This gate closing hydraulic braking device has a simple structure, high reliability, rapid response, and can be used in any working state of the gate.

[0005] The technical solution of the present invention is: a fast gate closing braking device, including a dual-shaft extension motor, one output shaft of the dual-shaft extension motor being connected to a drum, the drum controlling the opening and closing of the gate via a rope, and also including a hydraulic braking mechanism;

[0006] The hydraulic braking mechanism includes an oil tank, a first oil pipe, a solenoid valve, a hydraulic pump, and a throttle valve. The oil tank contains hydraulic oil, and the first oil pipe is connected to the oil tank to form a hydraulic circuit. The solenoid valve closes when energized and opens when de-energized. The solenoid valve is located at the outlet of the oil tank. The hydraulic pump is located on the hydraulic circuit below the oil tank. The drive shaft of the hydraulic pump is connected to one output shaft of the dual-shaft extension motor. The throttle valve is located on the hydraulic circuit.

[0007] Preferably, an extension shaft is provided on one side of the drum, and the extension shaft is connected to an auxiliary braking mechanism;

[0008] The auxiliary braking mechanism includes a first gear, a second gear, a connecting shaft, a water tank, and several blades. The first gear is mounted on the extension shaft, and the second gear is mounted on the connecting shaft. The second gear meshes with the first gear. One end of the connecting shaft is inserted into the water tank. The blades are mounted on the portion of the connecting shaft located inside the water tank. The water tank contains a dilatant non-Newtonian fluid. A dynamic sealing mechanism is provided at the junction of the connecting shaft and the water tank.

[0009] Preferably, a brake is provided on one output shaft of the dual-shaft extension motor, and the brake is connected to a brake release mechanism, which is used to release the brake when the power is off.

[0010] Preferably, the brake release mechanism includes an electromagnet, a spring, and a mounting plate. The mounting plate is located below the extension motor of the brake, the electromagnet is located between the mounting plate and the extension motor, and the spring is also located between the mounting plate and the extension motor.

[0011] Preferably, the hydraulic circuit is equipped with a pressure gauge and an oil filter.

[0012] Preferably, the hydraulic braking mechanism further includes a controller, a second oil pipe, and an oil pump. The oil pump is electrically connected to the controller. One end of the second oil pipe is located at the bottom of the hydraulic circuit, and the other end of the second oil pipe is located inside the oil tank. The oil pump is located on the second oil pipe.

[0013] Preferably, the flow rate can be infinitely adjusted by the throttle valve.

[0014] Preferably, the hydraulic pump is a bidirectional axial piston pump.

[0015] Preferably, one output shaft of the dual-shaft extension motor is connected to the drum via a speed reducer.

[0016] The beneficial effects of the present invention are as follows: The dual-shaft extension motor and the hydraulic pump are connected by a coupling, and the hydraulic pump is connected to the hydraulic pipeline. When a power failure occurs, the brake release mechanism releases the brake, and the dual-shaft extension motor reverses under the drive of the gate's own weight, thereby driving the hydraulic pump to rotate. At this time, the oil in the hydraulic pipeline generates resistance to the rotation of the hydraulic pump's drive shaft, thereby braking the gate as it falls.

[0017] It adopts a fixed mechanical structure connection, which is highly reliable and can respond quickly, and can play a stable role at any time when the gate is in use.

[0018] It is also equipped with an auxiliary braking mechanism, and the two braking components form a double insurance, which ensures high reliability. Attached Figure Description

[0019] Figure 1 This is a structural schematic diagram of Example 1.

[0020] Figure 2 This is a simplified structural diagram of the hydraulic braking mechanism in Example 1.

[0021] Figure 3 This is a structural schematic diagram of Example 2.

[0022] Figure 4 This is a magnified view of a portion of point A.

[0023] Figure 5 This is a magnified view of point A under emergency conditions.

[0024] Figure 6 This is a structural schematic diagram of Example 3.

[0025] Figure 7 This is a magnified view of a section at point B.

[0026] Figure 8 This is a schematic diagram of the internal structure of the water tank.

[0027] 1 is the base, 2 is the dual-shaft extension motor, 3 is the drum, 31 is the extension shaft, 4 is the reducer, 5 is the hydraulic braking mechanism, 51 is the oil tank, 52 is the first oil pipe, 53 is the solenoid valve, 54 is the hydraulic pump, 55 is the throttle valve, 56 is the second oil pipe, 57 is the oil pump, 6 is the holding brake, 61 is the telescopic motor, 7 is the holding brake release mechanism, 71 is the electromagnet, 72 is the spring, 73 is the mounting plate, 8 is the auxiliary braking mechanism, 81 is the first gear, 82 is the second gear, 83 is the connecting shaft, 84 is the water tank, 85 is the blade, and 86 is the expansion-plastic non-Newtonian fluid. Detailed Implementation

[0028] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "vertical," "horizontal," "inner," "outer," "front," and "back," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0030] Example 1

[0031] See Figures 1 to 2 This embodiment provides a fast gate closing braking device, including a dual-shaft extension motor 2. This embodiment also includes a base 1 to provide a stable mounting surface. One output shaft of the dual-shaft extension motor 2 is connected to the drum 3 through a reducer 4. The drum 3 controls the opening and closing of the gate through a winding rope. The above are all conventional connection methods. The specific connection structure will not be described in detail. It also includes a hydraulic braking mechanism 5.

[0032] The hydraulic braking mechanism 5 includes an oil tank 51, a first oil pipe 52, a solenoid valve 53, a hydraulic pump 54, and a throttle valve 55. The oil tank 51 contains hydraulic oil, and the first oil pipe 52 is connected to the oil tank 51 to form a hydraulic circuit. In this embodiment, the hydraulic circuit is equipped with a pressure gauge and an oil filter device (not shown in the figure). The pressure gauge is used to monitor the oil pressure in the pipeline, and the oil filter device is used to filter impurities in the oil to prevent pipeline blockage. Both are conventional components, and their specific structures and installation methods will not be described in detail. The solenoid valve 53 is closed when energized and opened when de-energized. The solenoid valve 53 is located at the outlet of the oil tank 51. The hydraulic pump 54 is located on the hydraulic circuit below the oil tank 51. The drive shaft of the hydraulic pump 54 is connected to one output shaft of the dual-shaft extension motor 2 through a coupling. This is a conventional technical means, and the specific connection structure will not be described in detail. The throttle valve 55 is located on the hydraulic circuit.

[0033] In this embodiment, the hydraulic braking mechanism further includes a controller, a second oil pipe 56, and an oil pump 57. The oil pump 57 is electrically connected to the controller. One end of the second oil pipe 56 is located at the bottom of the hydraulic circuit, and the other end of the second oil pipe 56 is located inside the oil tank 51. The oil pump 57 is located on the second oil pipe 56.

[0034] In this embodiment, the throttle valve 55 can infinitely adjust the flow rate. This, in turn, allows for infinitely adjustable gate descent speed. The throttle valve 55 with this function is a conventional component, and its specific structure and installation method will not be described in detail here.

[0035] In this embodiment, the hydraulic pump 54 is a bidirectional axial piston pump.

[0036] Working principle: When the power is off, the dual-shaft extension motor 2 reverses under the weight of the gate, which in turn drives the hydraulic pump 54 to reverse. At this time, the solenoid valve 53 is in the open state, releasing hydraulic oil. The hydraulic oil fills the entire hydraulic circuit, hindering the reverse rotation of the hydraulic pump 54, thereby producing a braking effect on the gate's descent. The flow rate of the hydraulic oil in the hydraulic circuit is controlled by the throttle valve 55, which in turn controls the speed at which the gate closes.

[0037] Under normal conditions, there is no hydraulic oil in the hydraulic circuit, which will not affect the normal opening and closing of the gate. After the emergency is lifted and the gate is powered on for normal use, the hydraulic oil in the hydraulic circuit can be drawn back to the oil tank by driving the oil pump 57 through the controller. At the same time, the oil pump 57 can also be used to reverse the flow of oil to flush the inside of the pipeline, preventing the oil from solidifying and hindering the operation of the components after a long period of disuse.

[0038] It adopts a fixed mechanical structure connection, which is highly reliable and can play a fast and stable role at any time when the gate is in use.

[0039] Example 2

[0040] See Figures 3 to 5 Compared to Embodiment 1, a brake 6 is provided on one output shaft of the dual-shaft extension motor. The brake 6 is a commonly used braking component used to maintain the gate in the open state. The specific structure and installation method will not be described in detail. For example, the YWZ9-300 / 30 type brake produced by Jiaozuo Electric Hydraulic Brake Factory is used. The brake 6 is connected to the brake release mechanism 7, which is used to release the brake 6 when the power is off.

[0041] In this embodiment, the brake release mechanism 7 includes an electromagnet 71, a spring 72, and a mounting plate 73. The mounting plate 73 is located below the extension motor 61 of the brake, the electromagnet 71 is located between the mounting plate 73 and the extension motor 61, and the spring 72 is also located between the mounting plate 73 and the extension motor 61.

[0042] This embodiment is an improvement for the case where a brake 6 is commonly included in practice. See [link to relevant documentation]. Figure 5 Under normal operating conditions, the telescopic motor 61 raises the telescopic arm and releases the brake 6. When the power is off, the electromagnet 71 loses its magnetism, and the spring 72 lifts the entire telescopic motor 61, releasing the brake 6. The brake 6 is controlled by physical properties, resulting in high stability.

[0043] Example 3

[0044] See Figures 6 to 8Compared to Embodiment 2, this embodiment further adds an auxiliary braking mechanism 8. An extension shaft 31 is provided on one side of the drum 3, and the extension shaft 31 is connected to the auxiliary braking mechanism 8. The auxiliary braking mechanism 8 includes a first gear 81, a second gear 82, a connecting shaft 83, a water tank 84, and several blades 85. The first gear 81 is located on the extension shaft 31, and the second gear 82 is located on the connecting shaft 83. The second gear 82 and the first gear 81 mesh. One end of the connecting shaft 83 is inserted into the water tank 84. The blades 85 are located on the portion of the connecting shaft 83 located inside the water tank 84. The water tank 84 contains a dilatant non-Newtonian fluid 86. A dynamic sealing mechanism is provided at the junction of the connecting shaft 83 and the water tank 84. In this embodiment, the dynamic sealing mechanism is a dynamic sealing ring, which is a conventional component; its specific structure and installation method will not be described in detail. The water tank 84 has an inlet and an outlet (not shown in the figure) for replacing the dilatant non-Newtonian fluid 86. The dilatant non-Newtonian fluid 86 can be a polyvinyl alcohol solution or a preservative-resistant starch solution.

[0045] Working principle: The dilatant non-Newtonian fluid 86, also known as a non-Newtonian fluid, has the following properties: slow stirring produces relatively little resistance, but when a greater shear stress is applied and it is stirred rapidly, the resistance increases sharply and it may even lose its flow properties. Utilizing its physical properties, the faster the gate descends, the faster the drum 3 rotates, and the faster the blade 85 rotates, the greater the resistance of the dilatant non-Newtonian fluid 86 to the blade 85, thereby exerting a braking effect.

[0046] Unlike hydraulic systems, the expansion-plastic non-Newtonian fluid 86 cannot be speed-adjusted during use. However, the braking effect can be set by controlling the material and density of the expansion-plastic non-Newtonian fluid 86, or by setting the speed ratio of the first gear 81 and the second gear 82.

[0047] It is equipped with an auxiliary braking mechanism 8, and the two braking mechanisms form a double insurance, which ensures high reliability.

[0048] This invention is not limited to the above embodiments. Based on the technical solutions disclosed in this invention, those skilled in the art can make some substitutions and modifications to some of the technical features without creative effort, and all such substitutions and modifications are within the protection scope of this invention.

Claims

1. A rapid gate closing braking device, comprising a dual-shaft extension motor, wherein one output shaft of the dual-shaft extension motor is connected to a drum, and the drum controls the opening and closing of the gate via a rope, characterized in that, It also includes a hydraulic braking mechanism; The hydraulic braking mechanism includes an oil tank, a first oil pipe, a solenoid valve, a hydraulic pump, and a throttle valve. The oil tank contains hydraulic oil, and the first oil pipe is connected to the oil tank to form a hydraulic circuit. The solenoid valve closes when energized and opens when de-energized. The solenoid valve is located at the outlet of the oil tank. The hydraulic pump is located on the hydraulic circuit below the oil tank. The drive shaft of the hydraulic pump is connected to one output shaft of the dual-shaft extension motor. The throttle valve is located on the hydraulic circuit. The hydraulic braking mechanism also includes a controller, a second oil pipe, and an oil pump. The oil pump is electrically connected to the controller. One end of the second oil pipe is located at the bottom of the hydraulic circuit, and the other end of the second oil pipe is located inside the oil tank. The oil pump is located on the second oil pipe.

2. The fast gate closing braking device according to claim 1, characterized in that, An extension shaft is provided on one side of the drum, and the extension shaft is connected to the auxiliary braking mechanism. The auxiliary braking mechanism includes a first gear, a second gear, a connecting shaft, a water tank, and several blades. The first gear is mounted on the extension shaft, and the second gear is mounted on the connecting shaft. The second gear meshes with the first gear. One end of the connecting shaft is inserted into the water tank. The blades are mounted on the portion of the connecting shaft located inside the water tank. The water tank contains a dilatant non-Newtonian fluid. A dynamic sealing mechanism is provided at the junction of the connecting shaft and the water tank.

3. The fast gate closing braking device according to claim 1, characterized in that, A brake is provided on one output shaft of the dual-shaft extension motor. The brake is connected to a brake release mechanism, which is used to release the brake when the power is off.

4. The fast gate closing braking device according to claim 3, characterized in that, The brake release mechanism includes an electromagnet, a spring, and a mounting plate. The mounting plate is located below the brake's telescopic motor, the electromagnet is located between the mounting plate and the telescopic motor, and the spring is also located between the mounting plate and the telescopic motor.

5. A fast gate closing braking device according to claim 1, characterized in that, The hydraulic circuit is equipped with a pressure gauge and an oil filter.

6. A fast gate closing braking device according to claim 1, characterized in that, The throttle valve allows for stepless adjustment of the flow rate.

7. A fast gate closing braking device according to claim 1, characterized in that, The hydraulic pump is a bidirectional axial piston pump.

8. A fast gate closing braking device according to claim 1, characterized in that, One output shaft of the dual-shaft extension motor is connected to the drum via a speed reducer.

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