Gate hydraulic hoist testing device and method

Abstract

The invention relates to the field of hydraulic gate hoists in water conservancy and hydropower and water transportation engineering, in particular to a testing device and method for a hydraulic gate hoist. The test device comprises a gate groove. The gate is placed in the gate groove, and a plurality of main rolling wheels are installed on the two side edges of the gate; the gate working hydraulic mechanism is connected with the gate and used for driving the gate to vertically move in the gate groove; the vertical loading hydraulic mechanism can generate acting force in the same direction and / or opposite direction with the gate working hydraulic mechanism and is used for simulating downward suction force, upward supporting force and water stop frictional resistance of the gate in actual operation; and the horizontal loading hydraulic mechanism can apply horizontal forces with different magnitudes and is used for simulating the horizontal water pressure borne by the gate. The vertical loading hydraulic mechanism and the horizontal loading hydraulic mechanism are used for replacing original firmware, and whether functional indexes of the gate hydraulic hoist meet design requirements or not can be verified.

Description

Technical Field

[0001] The present invention relates to the field of hydraulic hoists for gates in water conservancy, hydropower and water transportation projects, and particularly relates to a test device and method for a hydraulic hoist for a gate. Background Art

[0002] In the water conservancy, hydropower and water transportation industries, the opening and closing of gates are realized by hoists. Hydraulic hoists are widely used in the gate opening and closing systems of large water conservancy, hydropower and water transportation projects due to their flexible actions, accurate stroke control, overload protection and other characteristics.

[0003] Water-saving ship locks are used in water-scarce areas due to their advantages of water saving and adapting to high water heads. However, after the installation of water-saving pools, the filling and discharging steps are significantly increased compared with ordinary ship locks. To ensure the passing efficiency of the ship lock and reduce the filling and discharging time, it is necessary to increase the opening speed of the water-saving pool gate. The opening and closing speed of the gate depends on the speed of the hoist connected to it. Due to material and load limitations, and to ensure the stability of the entire system during the operation of the hoist, the opening speed of existing hydraulic hoists in the water conservancy, hydropower and water transportation industries is generally about 1 - 3 m / min, and the design specification for ship lock hoists stipulates that it should not be greater than 4 m / min. A certain canal project hub in China requires an opening speed of 10 m / min and a closing speed of 20 m / min, which has exceeded the highest opening and closing speeds of domestic and foreign water-saving ship locks. In recent years, the level of domestic water conservancy, hydropower and water transportation projects has developed rapidly, the scale of hydraulic hoists is getting larger and larger, and it continuously exceeds the existing level. To ensure the safety, reliability and stability during their operation, it is necessary to develop a set of test devices to test and verify the relevant performances. Summary of the Invention

[0004] The purpose of the present invention is to overcome the deficiencies in the prior art, and provide a test device and method for a hydraulic hoist for a gate, which uses a vertical loading hydraulic mechanism and a horizontal loading hydraulic mechanism to replace the original fixtures, reduces the cost of building the test machine, and better simulates the real working conditions of the hydraulic hoist operation, verifies whether the various functional indicators of the hydraulic hoist for the gate meet the design requirements, and ensures its operation stability and safety.

[0005] In a first aspect, the present invention provides a test device for a hydraulic hoist for a gate, including: Gate slot; Gate, placed in the gate slot, and a plurality of main rollers are installed on two sides of the gate; Gate working hydraulic mechanism, connected to the gate, and used to drive the gate to move vertically in the gate slot; Vertical loading hydraulic mechanism, which can generate a force in the same direction as and / or opposite to the working hydraulic mechanism of the gate, and is used to simulate the downward suction force, upward supporting force and water-stop frictional resistance during the actual operation of the gate; Horizontal loading hydraulic mechanism, which can apply horizontal forces of different magnitudes and is used to simulate the horizontal water pressure exerted on the gate.

[0006] The vertical loading hydraulic mechanism of the present invention can provide a force in the vertical direction. This force, together with the gravity of the gate in the test device, constitutes the gravity of the gate in the actual project. Under the same circumstances, the weight and scale of the gate can be reduced and replaced by the force provided by the vertical loading hydraulic mechanism. The present invention uses the vertical loading hydraulic mechanism to move in the opposite direction to the working hydraulic mechanism of the gate and apply a vertical force, which can simulate the upward supporting force, downward suction force and water-stop frictional resistance in the actual working conditions.

[0007] The horizontal loading hydraulic mechanism of the present invention can provide a horizontal force. By adjusting the oil pressure of the horizontal loading hydraulic mechanism, the horizontal loading hydraulic mechanism can apply horizontal forces of different magnitudes to achieve different degrees of clamping states between the gate and the gate slot, and simulate the horizontal water pressure of the gate in the working environment.

[0008] As Figure 12 described, when the gate hydraulic hoist quickly closes the gate, the working hydraulic mechanism of the gate provides a downward force F1, the vertical loading hydraulic mechanism provides an upward supporting force and a water-stop frictional resistance F2 in the vertical direction, and the horizontal loading hydraulic mechanism provides a horizontal force F3. The gate generates roller frictional resistance with the gate slot during the movement (as shown by the dotted line in Figure 12 ), achieving the effect of quickly closing the gate.

[0009] The present invention uses the vertical loading hydraulic mechanism and the horizontal loading hydraulic mechanism to replace the original fixtures, reducing the cost of building the test machine. At the same time, it better simulates the real working conditions of the operation of the hydraulic hoist, verifies whether the various functional indicators of the gate hydraulic hoist meet the design requirements, and ensures the stability and safety of its operation.

[0010] Preferably, a number of main rollers are installed on both sides of the gate to reduce the frictional force during the vertical movement of the gate.

[0011] Preferably, side guide wheels are installed at the top and bottom of both sides of the gate to guide the vertical movement of the gate in the gate slot and prevent the gate from colliding and damaging the side of the gate slot during the movement.

[0012] Preferably, a number of horizontal crossbeams are installed on the gate, and the horizontal loading hydraulic mechanism is installed on the horizontal crossbeams. The horizontal force applied by the horizontal loading hydraulic mechanism causes the main rollers to press tightly against the gate slot and move.

[0013] This test device assembles the horizontal loading hydraulic mechanism on the gate body. The horizontal loading hydraulic mechanism and the main rollers of the gate act on both sides of the gate slot track respectively. The horizontal force is an internal force for the entire test device and has little impact on the stability of the test device.

[0014] Preferably, the horizontal loading hydraulic mechanism includes a horizontal loading hydraulic cylinder, a connecting rod, and a loading roller. The horizontal loading hydraulic cylinder drives the connecting rod to swing, causing the loading roller to contact the outer surface of the gate slot.

[0015] Further preferably, the horizontal loading hydraulic pump station of the horizontal loading hydraulic mechanism can be installed above the gate body at the same time. The horizontal loading hydraulic mechanism and the gate remain relatively stationary, avoiding the relative movement of the oil pipes and ensuring the continuity of oil supply in the hydraulic system.

[0016] Preferably, the working hydraulic mechanism of the gate, the vertical loading hydraulic mechanism, and the horizontal loading hydraulic mechanism respectively adopt independent hydraulic systems and electric control systems. This ensures the independence of the operation of the working hydraulic hoist of the gate and can more truly reflect its performance indicators.

[0017] Preferably, the test device further includes a truss. The gate slot is connected to the truss through a support tie rod to ensure the stability of the gate slot.

[0018] Preferably, the test device further includes a platform. The platform is fixed to the tops of the gate slot and the truss. The platform is provided with a frame, and the working hydraulic mechanism of the gate and the vertical loading hydraulic mechanism are respectively assembled on the frame.

[0019] Preferably, the test device further includes a base foundation. The base foundation is provided with a number of embedded parts. The gate slot is detachably and fixedly connected to the embedded parts, and the truss is detachably and fixedly connected to the embedded parts. By changing the connection position between the gate slot and the embedded parts, or by changing the structural form of the truss, the installation positions of the steel structure truss and the gate slot are adjusted, and the position and size of the gate slot are changed to adapt to gates of different sizes.

[0020] In a second aspect, the present invention provides a test method for a gate hydraulic hoist, which uses any one of the above-mentioned gate hydraulic hoist test devices for testing.

[0021] Preferably, the test conditions involved in the test method include: normal opening of the valve, normal closing of the valve, and emergency closing of the valve.

[0022] Advantages of the present invention compared with the prior art: 1. The present invention utilizes a vertical loading hydraulic mechanism to move in the opposite direction of the gate working hydraulic mechanism, applying a vertical acting force, and can simulate the uplift force, downward suction force, and frictional resistance of water stop in actual working conditions.

[0023] The present invention utilizes a horizontal loading hydraulic mechanism to provide a horizontal force. By adjusting the oil pressure of the horizontal loading hydraulic mechanism, the horizontal loading hydraulic mechanism can apply different magnitudes of horizontal forces to achieve different degrees of clamping states between the gate and the gate slot, simulating the horizontal water pressure of the gate in the working environment.

[0024] When the gate hydraulic hoist quickly closes the gate, the gate working hydraulic mechanism provides a downward acting force F1, the vertical loading hydraulic mechanism provides an upward supporting force and the frictional resistance of water stop F2 in the vertical direction, and the horizontal loading hydraulic mechanism provides a horizontal acting force F3. The gate generates roller frictional resistance with the gate slot during the movement process, achieving the effect of quickly closing the gate.

[0025] 2. The present invention utilizes the vertical loading hydraulic mechanism and the horizontal loading hydraulic mechanism to replace the original fixtures, reducing the cost of building the test machine. At the same time, it better simulates the real working conditions of the hydraulic hoist operation, verifies whether the various functional indicators of the gate hydraulic hoist meet the design requirements, and ensures the stability and safety of its operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is a schematic diagram of the gate hydraulic hoist test device; Figure 2 is Figure 1 the front view of Figure 3 is Figure 2 the enlarged view of part A in Figure 4 is Figure 2 the three-dimensional view of the gate working hydraulic mechanism in Figure 5 is Figure 2 the front view of the vertical loading hydraulic mechanism in Figure 6 is Figure 2 the I-I view in Figure 7 is Figure 6 the enlarged view of part B in Figure 8 is Figure 7 the II-II view in Figure 9 is Figure 8 the three-dimensional view of the horizontal loading hydraulic mechanism in Figure 10It is a schematic layout diagram of the test device for the gate hydraulic hoist; Figure 11 It is Figure 10 a schematic diagram of the hydraulic pump station in Figure 12 It is a schematic principle diagram of the test device for the gate hydraulic hoist; Figure 13 It is a schematic principle diagram of the water pressure received by the gate at different depths.

[0027] Figure 14 It is a speed curve diagram of the opening and closing of the hydraulic hoist.

[0028] Markings in the figure: 1 - Base foundation, 2 - Truss, 3 - Embedded parts, 4 - Gate slot, 5 - Support tie rod, 6 - Platform, 7 - Frame, 8 - Gate working hydraulic mechanism, 81 - Gate working cylinder body, 82 - Make-up oil tank, 83 - Gate working cylinder oil pipe, 84 - Gate working cylinder support, 85 - Gate working cylinder hydraulic rod, 9 - Vertical loading hydraulic mechanism, 91 - Vertical loading cylinder body, 92 - Vertical loading cylinder oil pipe, 93 - Vertical loading cylinder hydraulic rod, 94 - Vertical loading cylinder support, 10 - Gate, 11 - Main roller, 12 - Side guide wheel, 13 - Vertical loading cylinder lifting head, 14 - Gate working cylinder lifting head, 15 - Horizontal loading hydraulic pump station, 16 - Horizontal loading hydraulic mechanism, 161 - Horizontal loading mechanism fixing seat, 162 - Horizontal loading hydraulic cylinder, 163 - Connecting rod, 164 - Loading roller, 17 - Horizontal crossbeam, 18 - Vertical loading hydraulic pump station, 19 - Gate working hydraulic pump station, 20 - Hydraulic oil pipe, 21 - Electrical control cabinet. Specific implementation manners

[0029] The present invention will be further described in detail below in conjunction with specific embodiments. However, this should not be construed as limiting the scope of the above-mentioned subject matter of the present invention to the following embodiments. All technologies implemented based on the content of the present invention belong to the scope of the present invention.

[0030] In the description of the specific embodiments of the present invention, without special explanation, the expressions of orientation or position relationship terms such as "upper", "lower", "left", "right", "center", "inner", "outer", etc. are all based on the orientation or position relationship shown in the drawings, or the orientation or position relationship when the invention product / device / equipment is commonly used. These orientation or position relationship terms are only for the convenience of describing the present invention solution or simplifying the description in the specific embodiments, facilitating technicians to quickly understand the solution, rather than indicating or implying that a specific device / component / element must have a specific orientation or be constructed and operated in a specific position relationship. Therefore, it should not be construed as a limitation to the present invention.

[0031] In addition, when terms such as "horizontal", "vertical", "hanging", "parallel" appear, it does not mean that the corresponding device / component / element is required to be absolutely horizontal or vertical or hanging or parallel, but it can be slightly inclined or deviated. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and it does not mean that the structure must be completely horizontal, but it can be slightly inclined. Or, it can be simply understood that the corresponding device / component / element is arranged in directions such as "horizontal", "vertical", "hanging", "parallel", etc., and can have an error / deviation of ±10% relative to the corresponding direction setting, more preferably within ±8% of the error / deviation, more preferably within ±6% of the error / deviation, more preferably within ±5% of the error / deviation, more preferably within ±4% of the error / deviation. As long as the corresponding device / component / element is within the error / deviation range, it can still perform its function in the solution of the present invention.

[0032] In addition, when expressions such as "first", "second", "third", etc. appear in the terms, they are only used to distinguish the description of the same or similar components, and should not be understood as emphasizing or implying the relative importance of specific components.

[0033] In addition, in the description of the embodiments of the present invention, "several", "multiple", "a number of" represent at least 2. It can be any situation such as 2, 3, 4, 5, 6, 7, 8, 9, etc., and even can be a situation of more than 9.

[0034] In addition, in the description of the technical solution of the present invention, unless otherwise clearly specified / defined / limited, when terms such as "set", "installed", "connected", "connected", "provided with", "laid", "arranged" appear, they should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection. It can be connection means commonly used in the art such as welding, riveting, bolting, threaded connection, etc. This connection can be a mechanical connection, an electrical connection or a communication connection; it can be directly connected, or indirectly connected through an intermediate medium, and can be the communication inside two components.

[0035] Embodiment 1 As Figures 1 - 2 shown, a gate hydraulic hoist test device includes a gate slot 4, a gate 10, a gate working hydraulic mechanism 8, a vertical loading hydraulic mechanism 9, a horizontal loading hydraulic mechanism 16, etc.

[0036] The gate slot 4, also known as the gate groove and the nip, is a groove provided in the middle of the gate wall (also known as the diamond wall) from top to bottom for the gate 10 to be inserted, supported and fixed. Its main function is to ensure that the gate 10 can fit tightly when closed, so as to achieve the effect of blocking water.

[0037] The gate 10, as an important part of the ship lock, is mainly used to control the water flow between the lock chamber and the upstream and downstream waterways. By opening and closing the gate 10, the water level in the lock chamber can be raised and lowered, enabling ships to safely pass through the waterway with a water level drop.

[0038] The gate 10 is placed in the gate slot 4. A number of main rollers 11 are installed on both sides of the gate 10, and the main rollers 11 can reduce the friction during the vertical movement of the gate 10. In an alternative embodiment, side guide wheels 12 can also be installed at the top and bottom of both sides of the gate 10 to guide the vertical movement of the gate 10 in the gate slot 4 and prevent the gate 10 from colliding and being damaged by the side of the gate slot 4 during the movement.

[0039] The gate working hydraulic mechanism 8 is connected to the gate 10 and is used to drive the gate 10 to move vertically in the gate slot 4.

[0040] In some embodiments, as Figures 2 - 4 shown, the gate working hydraulic mechanism 8 may include a gate working cylinder block 81, a supplementary oil tank 82, a gate working cylinder oil pipe 83, a gate working cylinder support 84, and a gate working cylinder hydraulic rod 85. A gate working cylinder hanger 14 is installed at the end of the gate working cylinder hydraulic rod 85. At the same time, the gate working cylinder hanger 14 is hinged to the top lifting lug of the gate 10. The gate 10 is driven to move vertically in the gate slot 4 through the gate working hydraulic mechanism 8 to realize the opening and closing of the gate.

[0041] The vertical loading hydraulic mechanism 9 can generate a force in the same direction as and / or in the opposite direction to the gate working hydraulic mechanism 8, and is used to simulate the downward suction force, upward lifting force, and water stop friction force during the actual operation of the gate 10.

[0042] In some embodiments, as Figure 5 shown, the vertical loading hydraulic mechanism 9 may include a vertical loading cylinder block 91, a vertical loading cylinder oil pipe 92, a vertical loading cylinder hydraulic rod 93, and a vertical loading cylinder support 94. A vertical loading cylinder hanger 13 is installed at the end of the vertical loading cylinder hydraulic rod 93. At the same time, the vertical loading cylinder hanger 13 is fixed to the top of the gate 10.

[0043] The vertical loading hydraulic mechanism 9 provides a force in the vertical direction. This force and the gravity of the gate 10 in the test device together constitute the gravity of the gate in the actual project. Under the same conditions, the weight and scale of the gate 10 can be reduced and replaced by the force provided by the vertical loading hydraulic mechanism 9.

[0044] A vertical loading hydraulic pump station 18 can be set up to supply the vertical loading hydraulic mechanism 9.

[0045] The horizontal loading hydraulic mechanism 16 can apply horizontal forces of different magnitudes to simulate the horizontal water pressure exerted on the gate 10, such as Figure 13 shown.

[0046] In some embodiments, as Figures 6 - 9 shown, a number of horizontal crossbeams 17 are installed on the panel of the gate 10. At both ends of the side of the horizontal crossbeam 17 close to the panel of the gate 10, horizontal loading hydraulic mechanisms 16 are respectively installed. The horizontal loading hydraulic mechanism 16 may include a horizontal loading hydraulic mechanism fixing base 161, a horizontal loading hydraulic cylinder 162, a connecting rod 163, and a loading roller 164. The horizontal loading hydraulic mechanism fixing base 161 is installed on the horizontal crossbeam 7. The cylinder end of the horizontal loading hydraulic cylinder 162 is fixed on the horizontal loading hydraulic mechanism fixing base 161. The telescopic end of the hydraulic rod is connected to the middle of the connecting rod 163. One end of the connecting rod 163 is connected to the horizontal loading hydraulic mechanism fixing base 161, and the other end is connected with a loading roller 164. The loading roller 164 contacts the outer surface of the gate slot 4.

[0047] During the test, the hydraulic rod of the horizontal loading hydraulic cylinder 162 extends, driving the connecting rod 163 to move. The loading roller 164 assembled at one end of the connecting rod 163 increases the contact force with the outer surface of the gate slot 4. Since the horizontal loading hydraulic mechanism 16 is fixed on the horizontal crossbeam 17, and the horizontal crossbeam 17 is fixed on the panel of the gate 10, that is, when the horizontal loading hydraulic mechanism 16 works, the gate 10 is in close contact with the gate slot 4 under the applied horizontal force, simulating the lateral water pressure environment suffered by the gate 10 in the water conservancy project. Further, the horizontal loading hydraulic pump station 15 can also be fixed on the top of the gate body 10 of the gate. The hydraulic pipeline and the loading cylinder are both installed on the gate, maintaining relative rest, avoiding the relative movement of the oil pipe, and ensuring the continuity of oil supply when the horizontal loading hydraulic cylinder moves vertically with the gate.

[0048] In an optional embodiment, the gate working hydraulic mechanism 8, the vertical loading hydraulic mechanism 9, and the horizontal loading hydraulic mechanism 16 respectively adopt independent hydraulic systems and electric control systems (such as independent hydraulic oil pipes 20 and electric control cabinets 21), which can ensure the independence of the operation of the gate hydraulic hoist and can more truly reflect its performance indicators. For example, as Figures 10 - 11 shown, the gate working hydraulic mechanism 8, the vertical loading hydraulic mechanism 9, and the profiled steel frame 7 are vertically arranged on the steel structure platform 6, and the hydraulic system and the electric control system are arranged on the ground concrete platform.

[0049] The gate moves vertically in the gate slot under the action of the gate working hydraulic mechanism 8. The horizontal loading hydraulic mechanism 16 applies different horizontal forces to achieve different degrees of clamping states between the main rollers 11 of the gate and the gate slot 4. During the movement of the gate 10, the clamping state with the gate slot 4 generates frictional resistance in the vertical direction, simulating the roller frictional resistance of the gate 20 during actual operation and more realistically simulating the actual situation. At the same time, it can verify whether the relationships such as the material selection, hardness difference, and fit tolerance between the rollers and the gate slot track are reasonable.

[0050] The vertical loading hydraulic mechanism 9 and the horizontal loading hydraulic mechanism 16 are used in combination to comprehensively verify the performance parameters of the hydraulic hoist. According to the water pressure during the actual operation of the gate 10, the horizontal loading hydraulic mechanism 16 applies a horizontal force of the same magnitude, and then the vertical loading hydraulic mechanism 9 simulates the upward lifting force, downward suction force, and frictional resistance of the water stop during the opening and closing process of the gate, enabling the gate working hydraulic mechanism 8 to apply the rated capacity of the opening and closing force and verifying performance parameters such as the opening and closing time.

[0051] As Figure 12 shown, to analyze the principle of the fast hydraulic hoist for the gate, its model is simplified. To better simulate the real situation faced by the gate hydraulic hoist and meet its test requirements under different working conditions, the vertical loading hydraulic mechanism 9 is used to increase or decrease the weight of the gate 10, simulating the downward suction force, upward lifting force, and frictional resistance of the water stop during the actual operation of the gate. When the gate hydraulic hoist is performing the gate opening operation, the gate working hydraulic mechanism 8 provides an upward pulling force F1, the weight of the gate 10 itself is G, and the vertical loading hydraulic mechanism 9 provides the downward suction force and frictional resistance of the water stop F2 in the vertical direction. Under the action of the gate working hydraulic mechanism 8 and the vertical loading hydraulic mechanism 9, the gate 10 moves vertically upward along the direction of the gate slot, achieving the effect of opening the gate 10. The horizontal loading hydraulic cylinder 162 elongates the hydraulic rod by pressurization, driving the connecting rod 163. One end of the connecting rod 163 is connected to the fixed seat 161 of the horizontal loading mechanism, that is, the connecting rod 163 rotates around the point where it is connected to the fixed seat 161 as the center, driving the loading roller 164 at the other end of the connecting rod 163, so that the contact force between the loading roller 164 and the outer surface of the gate slot 4 is increased (or decreased), thereby generating different contact pressures in the horizontal direction between the gate 10 and the gate slot 4 of the gate, that is, the horizontal loading hydraulic mechanism 16 provides the horizontal pressure F3, simulating the water pressure received by the gate 10 in the working environment at different water depths, such as Figure 13As shown in the figure. Under the action of the horizontal force F3, the gate is pressed against the gate slot by the "water pressure", and the gate moves vertically in the gate slot. The resulting roller friction resistance is f×F3 (where f is the friction coefficient between the roller and the gate slot). To verify whether the rated capacity of the rapid hydraulic hoist for the gate meets the requirements, the external forces applied by the two vertical loading hydraulic mechanisms are respectively set to (F1 - G - F3 - f×F3) / 2. If the gate can move smoothly in the vertical direction in the gate slot, it means that the rated capacity of the gate hydraulic hoist meets the requirements.

[0052] Similarly, when the gate hydraulic hoist quickly closes the gate 10, the gate working hydraulic mechanism 8 provides a downward acting force F1, the vertical loading hydraulic mechanism 9 provides an upward supporting force and the friction resistance F2 for water stop in the vertical direction, the horizontal loading hydraulic mechanism 16 provides a horizontal acting force F3, and the gate 10 generates a roller friction resistance with the gate slot 4 during the movement, as Figure 12 shown by the dashed line in the figure, achieving the effect of quickly closing the gate 10.

[0053] In the self-weight closing gate working condition, the pipeline of the gate working hydraulic mechanism 8 is connected to the gate working hydraulic pump station 19. The vertical loading hydraulic mechanism 9 provides an upward supporting force and the friction resistance F2 for water stop in the vertical direction, the horizontal loading hydraulic mechanism 16 provides a horizontal acting force F3, and the gate 10 generates a roller friction resistance with the gate slot 4 during the movement. The gate working hydraulic mechanism 8 is switched to differential connection, and the rodless cavity is gravity self-primed and refueled through the oil tank, and the gate 10 is closed by relying on the self-weight of the gate body.

[0054] Rapid opening gate working condition:

[0055]

[0056] Rapid closing gate working condition:

[0057]

[0058] Self-weight closing gate working condition:

[0059]

[0060] This prototype test device can conduct tests on rapid hydraulic hoists with different specification requirements by adjusting different hydraulic parameters, reducing unnecessary construction costs and time costs, and at the same time facilitating the construction of a standardized test process for rapid hydraulic hoists.

[0061] Embodiment 2 Based on Embodiment 1, the test device in this embodiment further includes a base foundation 1, a truss 2, and a platform 6. Among them: The base foundation 1 can be constructed of concrete. A steel structure truss 2 is erected around the concrete base to ensure the stability of the entire structure. Further, embedded parts 3 can be laid in the concrete base foundation 1, and the gate slot 4 can be fixed on the embedded parts 3, and / or the truss 2 can also be fixed on the embedded parts 3. The embedded parts 3 can be provided with a threaded structure, and the gate slot 4 / truss 2 can be connected to the embedded parts 3 by bolts or the like. Of course, other methods can also be considered to achieve the detachable connection between the embedded parts 3 and the gate slot 4 / truss 2, such as snap connection.

[0062] In a further preferred solution, a plurality of embedded parts 3 can be provided on the base foundation 1, and the gate slot 4 can be connected to the embedded parts 3 at different positions, so as to be able to change the position and size of the gate slot, making the test device applicable to gates of different sizes.

[0063] In a further preferred solution, by changing the structural form of the truss 2, the position and size of the gate slot can be changed, making the test device applicable to gates of different sizes.

[0064] The truss 2 can be a steel structure truss, and the gate slot 4 is connected to the truss 2 through a support tie rod 5 to ensure the stability of the gate slot 4.

[0065] The platform 6 can be a steel structure platform. The platform 6 is fixed on the top of the gate slot 4 and the truss 2. The platform 6 is provided with a frame 7 as the bottom support of the hydraulic mechanism. The gate working hydraulic mechanism 8 and the vertical loading hydraulic mechanism 9 can be respectively assembled on the frame 7.

[0066] This embodiment can provide a gate hydraulic hoist test device with universality and capable of being repeatedly used. That is, a general test device is built. By adjusting the assembly position of the steel structure truss 2 and the gate slot 4, changing the size of the gate slot 10, installing gates of different sizes and hydraulic cylinders with different performance indicators, and adjusting different hydraulic parameters, the performance indicators of different hydraulic hoists can be verified and tested, reducing a large amount of construction costs and time costs.

[0067] Embodiment 3 A gate hydraulic hoist test method uses a gate hydraulic hoist test device as described in Embodiment 1 for testing.

[0068] In one or more specific embodiments: The working valve orifice size is 5.0m×6.5m (width×height). The working valve is operated by a 3000kN / 400kN hydraulic hoist arranged on the top of the gate, and the operation mode is opening and closing under flowing water. The working valve is a plane fixed-wheel gate with a self-weight of about 50t.

[0069] The working valve is operated by a vertical cylinder hydraulic hoist. The hydraulic hoist is installed vertically and connected to the valve through a suspension rod. The normal working condition is dynamic opening and static closing, and the accident condition is closing the valve under flowing water. The hydraulic hoist consists of an oil cylinder assembly, a hydraulic system pump station, a stroke detection and indicating device, a stroke limit device, a frame, a valve group beside the cylinder, a hydraulic pipeline system, on-site control station equipment for the working valve hoist, etc. The piston rod is made of a ceramic piston rod (including an internal stroke detection device). To ensure the safety and reliability of stroke detection, an external absolute rigid stroke detection device is also configured for the oil cylinder.

[0070] The main technical parameters of the hydraulic hoist are shown in Table 1.

[0071] Table 1 Design Parameters of the Valve Hydraulic Hoist

[0072] The test conditions include: (1) Normal opening of the valve Start the pump and open the valve with variable speed (slow - fast - slow). The opening time is about 1 minute (adjustable).

[0073] (2) Normal closing of the valve Fall with variable speed under its own weight (slow - fast - slow). The closing time is about 0.5 minute (adjustable).

[0074] (3) Emergency closing of the valve Start the pump and lower the valve with variable speed (slow - fast - slow). The closing time is about 1 minute (adjustable).

[0075] The operating loads of the working valve hydraulic hoist are shown in Table 2 below: Table 2 Operating Loads of the Working Valve Hydraulic Hoist

[0076] Technical requirements for the in - situ vertical test of the working valve hydraulic hoist: (1) The oil cylinder, hydraulic system, and on - site electric control system used for the in - situ test should be consistent with those actually adopted in the project, and the prototype ratio is 1:1. One set of hydraulic system and electric control system is used to drive one oil cylinder.

[0077] (2) The test state of the hydraulic oil cylinder should be consistent with the actual use state. It is arranged vertically and supported by an intermediate hinge.

[0078] (3) The working valve used for the test should be consistent with that actually adopted in the project, and the prototype ratio is 1:1. At the same time, the weight of the suspension rod is counterweighted to the gate.

[0079] (4) The opening and closing speed curve of the hydraulic hoist is as Figure 14 shown.

[0080] (5) The working principle of the hydraulic hoist system is as follows: A) For opening the working valve, an electro-hydraulic proportional pump is used for driving, with stepless speed regulation operation; B) For normal closing of the working valve, self-weight closing is adopted, a high-level oil tank is set up, and a proportional valve group beside the cylinder is set up; C) For emergency closing of the working valve, an electro-hydraulic proportional pump is used for driving, with stepless speed regulation operation.

[0081] (6) The mechanical buffer form of the oil cylinder adopts a labyrinth buffer structure.

[0082] (7) The in-situ test device should meet the functional verification under the conditions of normal opening, self-weight closing and emergency closing of the hydraulic hoist.

[0083] (8) The hydraulic system of the in-situ test device should have the functions of real-time online monitoring of the oil fluid and automatic purification function (equipped with an oil fluid purification device).

[0084] (9) At least not less than 1000 times of tests for normal opening, self-weight closing and emergency closing of the hoist should be completed. The number of tests per day can be adjusted according to the actual situation.

[0085] (10) The test plan should simulate the actual operating conditions on-site as much as possible, and simulate the resultant force of the frictional resistance, water column weight and uplift force in the vertical direction by loading the oil cylinder.

[0086] (11) A third-party testing agency should be introduced to participate in the whole test process of the in-situ test and record the relevant test parameters.

[0087] (12) After 500 tests, the oil cylinder, hydraulic system and electric control system should be inspected to evaluate the health condition of the hydraulic hoist. After passing the evaluation without problems, reassemble for testing.

[0088] (13) Before the test, the installation error of the hydraulic hoist should be checked, and the test can be carried out only after meeting the requirements.

[0089] (14) Before the test, the hydraulic system pipeline should be flushed, and the test can be carried out only after passing the inspection.

[0090] (15) Before the test, the hydraulic oil should be inspected, and the grade of the hydraulic oil should reach NAS 8 or above.

[0091] (16) The oil cylinder and hydraulic system should be equipped with an online detection system to monitor the operating state of the hydraulic hoist in real time.

[0092] (17) The hydraulic system of the in-situ test device should be equipped with a temperature online monitoring and warning device and a cooling device.

[0093] (18) For the buffer of the hydraulic hoist, the combination of hydraulic system buffer and mechanical structure buffer should be considered.

[0094] (19) Simulate an accident occurring after the normal opening of the gate to a certain opening degree, and close the gate in the reverse accident mode.

[0095] (20) Simulate that under the accident gate closing condition, the gate gets stuck, and it is necessary to immediately release the pressure and let the gate close by its own weight.

[0096] (21) The installation positions of the steel structure truss and the bottom of the gate slot can be appropriately adjusted to facilitate simulating the opening and closing conditions after the installation deviation is increased.

[0097] The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A gate hydraulic hoist test device, characterized in that: include: Door slot (4); A gate (10) is placed in the gate slot (4), and a plurality of main rollers (11) are installed on two sides of the gate (10); A gate working hydraulic mechanism (8), connected to the gate (10), and used to drive the gate (10) to move vertically in the gate slot (4); A vertical loading hydraulic mechanism (9), the vertical loading hydraulic mechanism (9) being capable of generating a force in the same direction and / or opposite direction as the gate working hydraulic mechanism (8), for simulating the downward suction force, upward lifting force and water-stopping friction resistance of the actual operation of the gate (10); A horizontal loading hydraulic mechanism (16), wherein the horizontal loading hydraulic mechanism (16) is capable of applying horizontal forces of different magnitudes, so as to simulate the horizontal water pressure to which the gate (10) is subjected.

2. A gate hydraulic hoist test device according to claim 1, characterized in that: The gate (10) is installed with a plurality of horizontal beams (17), and the horizontal loading hydraulic mechanism (16) is installed on the horizontal beams (17). The horizontal force applied by the horizontal loading hydraulic mechanism (16) causes the main roller (11) to press against the gate slot (4) and move.

3. A gate hydraulic hoist test device according to claim 2, characterized in that: The horizontal loading hydraulic mechanism (16) comprises a horizontal loading hydraulic cylinder (162), a connecting rod (163), and a loading roller (164); the horizontal loading hydraulic cylinder (162) drives the connecting rod (163) to swing, so that the loading roller (164) contacts the outer surface of the door slot (4).

4. A gate hydraulic hoist test device according to claim 1, characterized in that: Side guide wheels (12) are installed at the top and bottom of two side edges of the gate (10) for guiding the gate (10) to move vertically in the gate slot (4).

5. A gate hydraulic hoist test device according to claim 1, characterized in that: The gate working hydraulic mechanism (8), the vertical loading hydraulic mechanism (9), and the horizontal loading hydraulic mechanism (16) respectively adopt independent hydraulic systems and electric control systems.

6. A gate hydraulic hoist test device according to any one of claims 1 to 5, characterized in that: It also comprises a truss (2), wherein the door slot (4) is connected to the truss (2) via a supporting pull rod (5).

7. A gate hydraulic hoist test device according to claim 6, characterized in that: It also includes a platform (6), the platform (6) being fixed to the gate slot (4) and the top of the truss (2), the platform (6) being provided with a frame (7), and the gate working hydraulic mechanism (8) and the vertical loading hydraulic mechanism (9) being respectively mounted on the frame (7).

8. A gate hydraulic hoist test device according to claim 6, characterized in that: It also comprises a base foundation (1), the base foundation (1) being provided with a plurality of embedded parts (3), the door slot (4) being detachably fixedly connected to the embedded parts (3), and the truss (2) being detachably fixedly connected to the embedded parts (3).

9. A gate hydraulic hoist test method, characterized in that: The test is carried out using a gate hydraulic opening and closing machine testing device as described in any one of claims 1 to 8.

10. A gate hydraulic hoist test method according to claim 9, characterized in that: The test conditions include: valve normally open, valve normally closed, and valve accident closed.

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