Performance test device and test method for vertical hydraulic hoist

Abstract

The invention relates to the technical field of hydraulic hoist performance testing, in particular to a vertical hydraulic hoist performance testing device and a vertical hydraulic hoist performance testing method, the testing device performs structure and function simulation on a ship lock valve acted by an existing hydraulic hoist, can realize quick opening and closing of a working valve within set opening and closing time, and meanwhile, can realize quick opening and closing of the working valve within the set opening and closing time. Equivalent simulation of vertical loads such as valve gravity, water flow uplift force, water column force and frictional resistance borne by the working valve under the actual working condition is realized through the vertical loading system, and equivalent simulation of water flow horizontal acting force of the working valve under the actual working condition is realized through the horizontal loading system; according to the test method, the output loads of the vertical loading system and the horizontal loading system can be adjusted in real time according to the operating state of the hydraulic hoist and the change characteristics of the actual water flow horizontal acting force, and the dynamic performance test of the hydraulic hoist operating under the actual complex working condition is met; and the dynamic performance test of rapid opening and closing operation of the rapid hydraulic hoist can be met.

Description

Technical Field

[0001] The present invention relates to the technical field of performance testing of hydraulic hoists, and particularly relates to a vertical hydraulic hoist performance testing experimental device and an experimental method. Background Art

[0002] The valve hydraulic hoist is a key device for controlling water conservancy facilities such as sluices and ship locks. Its performance is directly related to the safe operation of water conservancy projects and the effective management of water resources. The reliability requirements of hydraulic hoists are very high. For valves with strict opening and closing time requirements, if the hydraulic hoist cannot complete opening or closing within the specified time, different degrees of losses will occur, and even the passage time of ships will be affected, resulting in system chaos.

[0003] Existing hydraulic hoists need to undergo various performance tests and inspections before leaving the factory. This pre-factory test and inspection are generally no-load tests. The valve is opened or closed without water pressure by the hydraulic hoist, and the performance of the hydraulic hoist is detected by measuring the opening and closing force, opening and closing speed, and opening and closing time of the hydraulic hoist. However, the loads received by the hydraulic hoist during actual operation are very complex. The no-load test cannot determine the load capacity of the hydraulic hoist, cannot judge its performance under different loads and working conditions, and cannot accurately reflect the dynamic performance of the hydraulic hoist under actual complex working conditions. At the same time, currently, the opening and closing speed of large ship lock valves in China is generally 2 - 4 m / min, and the opening and closing speed of most foreign ship lock valves of the same level generally does not exceed 7 m / min. With the continuous development of society, domestic hydraulic hoists are gradually developing towards high water heads, large loads, and fast opening and closing. To ensure the passing efficiency of the ship lock and reduce the filling and discharging time, it is necessary to further increase the opening and closing speed of the valve. However, the existing large-scale test devices for hydraulic hoists lack technical means for testing the performance and reliability verification of high-performance hydraulic hoists with high requirements for such opening and closing speeds and high-speed operation reliability. Therefore, it cannot realize the test of the dynamic performance of the fast hydraulic hoist during fast opening and closing operation. For current large and medium-sized fast hydraulic hoists, it cannot meet the test requirements for the long-term stable operation reliability. Summary of the Invention

[0004] The purpose of the present invention is to overcome the deficiencies in the prior art that the existing test devices cannot realize the dynamic performance test of the hydraulic hoist under actual complex working conditions and cannot meet the dynamic performance test requirements of the fast hydraulic hoist during fast opening and closing operation, and to provide a vertical hydraulic hoist performance testing experimental device and an experimental method.

[0005] In a first aspect, the present invention provides a performance test device for a vertical hydraulic hoist, comprising a hydraulic hoist system, a load system, a support frame and a working valve; the support frame is detachably connected with a gate slot mechanism, and the working valve is slidably engaged with the gate slot mechanism; the hydraulic hoist system is connected to the working valve and is used to drive the relative movement of the working valve and the gate slot mechanism; the load system is connected to the working valve and is used to apply simulated working condition loads to the working valve, and the load system includes a vertical loading system and a horizontal loading system.

[0006] The performance test device for a vertical hydraulic hoist of the present invention drives the working valve to move along the gate slot mechanism through the hydraulic hoist system, realizes the structural and functional simulation of the lock valve acted by the existing hydraulic hoist, can realize the rapid opening and closing of the working valve under the set opening and closing time, meets the requirements of the rapid opening and closing test. At the same time, the vertical loading system provides a vertical tensile or thrust force to the working valve to realize the equivalent simulation of the vertical loads such as the valve gravity, the upward supporting force of the water flow, the water column force, the frictional resistance, etc. suffered by the working valve under the actual working conditions, and the horizontal loading system provides a horizontal tensile or thrust force to the working valve to realize the equivalent simulation of the horizontal water flow acting force of the working valve under the actual working conditions. It can adjust the output loads of the vertical loading system and the horizontal loading system in real time according to the operation state of the hydraulic hoist and the change characteristics of the actual horizontal water flow acting force, and conduct dynamic performance tests under different opening and closing speeds, opening and closing times, and opening and closing force conditions, meet the dynamic performance test of the hydraulic hoist operating under actual complex working conditions, and can meet the dynamic performance test of the rapid hydraulic hoist during rapid opening and closing operation.

[0007] Preferably, the hydraulic hoist system includes a test oil cylinder and a first hydraulic system. The test oil cylinder is vertically arranged at the top of the support frame, the test oil cylinder is connected to the top of the working valve, and the first hydraulic system is connected to the test oil cylinder through a hydraulic pipeline. To truly simulate the vertical opening and closing working condition of the hydraulic hoist on the working valve, the first hydraulic system can realize the rapid telescoping of the test oil cylinder, and then meet the requirement of the rapid opening and closing of the working valve.

[0008] Preferably, the vertical loading system includes a loading oil cylinder and a second hydraulic system. The loading oil cylinder is vertically arranged at the top of the support frame, the loading oil cylinder is connected to the top of the working valve, and the two loading oil cylinders are arranged on both sides of the test oil cylinder. The second hydraulic system is connected to the loading oil cylinder through a hydraulic pipeline. To provide uniform and symmetric vertical loads to the working valve through the two loading oil cylinders, it can simulate the vertical loads such as gravity, frictional resistance, inertial force, downward suction force and upward supporting force of the water flow suffered by the hydraulic hoist during the opening and closing process, and the second hydraulic system can adjust the telescoping of the loading oil cylinder to meet the test requirements of different vertical loads.

[0009] Preferably, the horizontal loading system includes a frame, a connecting rod mechanism oil cylinder assembly, and a third hydraulic system. The frame is connected to the water-facing surface of the working valve. The connecting rod mechanism oil cylinder assembly is arranged on the frame. The connecting rod mechanism oil cylinder assembly is connected with an abutting part. The third hydraulic system is connected to the connecting rod mechanism oil cylinder assembly through a hydraulic pipeline and can drive the abutting part to push against the water-facing surface of the gate slot mechanism. By driving the abutting part to push against the gate slot mechanism through the connecting rod mechanism oil cylinder assembly, the pushing force of the connecting rod mechanism oil cylinder assembly against the gate slot mechanism acts on the water-facing surface of the working valve through the frame in a reaction manner, which can simulate the horizontal water flow force received by the working valve under actual working conditions. The pushing force can be adjusted by adjusting the connecting rod mechanism oil cylinder assembly through the third hydraulic system to meet the test requirements of different horizontal loads.

[0010] Preferably, the connecting rod mechanism oil cylinder assembly includes a first connecting rod, a second connecting rod, and a telescopic oil cylinder. One end of the first connecting rod is connected to the frame, and the other end is hinged to the second connecting rod. The abutting part is arranged at the end of the second connecting rod away from the first connecting rod. One end of the telescopic oil cylinder is hinged to the frame, and the other end is hinged to the second connecting rod. A plurality of the connecting rod mechanism oil cylinder assemblies are arranged in an array on the water-facing surface of the working valve.

[0011] Preferably, the third hydraulic system includes a proportional overflow valve group, and the proportional overflow valve group is connected to an electric control system, which can realize automatic adjustment of the pushing force.

[0012] Preferably, the abutting part includes a roller, and a wear-resistant layer is arranged on the roller and / or at the position of the gate slot mechanism corresponding to the abutting part to ensure stable contact between the abutting part and the gate slot mechanism.

[0013] Preferably, the support frame includes a truss structure portal frame. The support frame is arranged on a civil engineering foundation. The gate slot mechanism is arranged on the civil engineering foundation. The gate slot mechanism includes oppositely arranged track mechanisms, and the track mechanisms are detachably connected to the support frame.

[0014] Preferably, a monitoring system is further included. The monitoring system includes a plurality of distributed sensors, including vibration monitoring sensors, speed monitoring sensors, temperature monitoring sensors, inclination monitoring sensors, and noise monitoring sensors. The test oil cylinder is provided with an internal travel detection mechanism and an external travel detection mechanism to monitor the operation data of different parts during the test, realize real-time online monitoring of test parameters, and provide data support for verifying and evaluating the reliability of the equipment.

[0015] In a second aspect, the present invention provides a performance test method for a vertical hydraulic hoist, which adopts the above-mentioned performance test device for a vertical hydraulic hoist and includes the following steps: Step 1: Conduct a simulation test on the gate opening condition under the set opening and closing time conditions; Step 2: Conduct a simulation test on the gate closing condition; Step 3: Conduct a simulation test on the accident gate closing condition.

[0016] A performance test method for a vertical hydraulic hoist of the present invention can, by adopting the above test device, achieve the dynamic performance test of a hydraulic hoist operating under actual complex working conditions, and can meet the dynamic performance test of a fast hydraulic hoist during fast opening and closing operations, improving the test accuracy.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. The present invention provides a performance test device for a vertical hydraulic hoist. By driving the working valve to move along the gate slot mechanism through a hydraulic hoist system, it realizes the structure and function simulation of the lock valve acted on by the existing hydraulic hoist, and can achieve the fast opening and closing of the working valve under the set opening and closing time, meeting the requirements of the fast opening and closing test; 2. The present invention provides a performance test device for a vertical hydraulic hoist. By providing a vertical pulling force or pushing force to the working valve through a vertical loading system, it can achieve the equivalent simulation of the vertical loads such as the valve gravity, water uplift force, water column force, and frictional resistance suffered by the working valve under actual working conditions; 3. The present invention provides a performance test device for a vertical hydraulic hoist. By providing a horizontal pulling force or pushing force to the working valve through a horizontal loading system, it can achieve the equivalent simulation of the horizontal water flow acting force on the working valve under actual working conditions; 4. The present invention provides a performance test device for a vertical hydraulic hoist. It can, according to the operating state of the hydraulic hoist and the change characteristics of the actual horizontal water flow acting force, adjust the output loads of the vertical loading system and the horizontal loading system in real time, conduct dynamic performance tests under different opening and closing speeds, opening and closing times, and opening and closing forces, meet the dynamic performance test of a hydraulic hoist operating under actual complex working conditions, and can meet the dynamic performance test of a fast hydraulic hoist during fast opening and closing operations. The test results are more consistent with the actual working conditions; 5. The present invention provides a performance test method for a vertical hydraulic hoist. By adopting the above test device, it can achieve the dynamic performance test of a hydraulic hoist operating under actual complex working conditions, and can meet the dynamic performance test of a fast hydraulic hoist during fast opening and closing operations, improving the test accuracy. Description of the Drawings

[0018] Figure 1 It is a schematic structural diagram of a performance test device for a vertical hydraulic hoist of the present invention; Figure 2Schematic layout diagram of the monitoring system described in Embodiment 1; Figure 3 Schematic structural diagram of the working valve described in Embodiment 1; Figure 4 Axonometric view of the combination of the horizontal loading system and the working valve described in Embodiment 1; Figure 5 Side view of the combination of the horizontal loading system and the working valve described in Embodiment 1.

[0019] Markings in the figure: 1 - Support frame, 2 - Working valve, 3 - Gate slot mechanism, 31 - Track mechanism, 4 - Test oil cylinder, 41 - First hydraulic system, 5 - Vertical loading system, 51 - Loading oil cylinder, 52 - Second hydraulic system, 6 - Horizontal loading system, 61 - Frame, 62 - Link mechanism oil cylinder assembly, 621 - First link, 622 - Second link, 623 - Telescopic oil cylinder, 63 - Contact part, 7 - Hydraulic pipeline, 8 - Electric control system, 9 - Wear-resistant layer, 10 - Civil engineering foundation, 201 - First vibration monitoring sensor, 202 - Second vibration monitoring sensor, 203 - Third vibration monitoring sensor, 204 - Fourth vibration monitoring sensor, 205 - First temperature monitoring sensor, 206 - Second temperature monitoring sensor, 207 - First inclination monitoring sensor, 208 - Second inclination monitoring sensor, 209 - Noise monitoring sensor. Detailed implementation manners

[0020] 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. Any technology implemented based on the content of the present invention belongs to the scope of the present invention.

[0021] In the description of the specific embodiments of the present invention, without special explanation, the expression terms indicating the orientation or positional relationship such as "upper", "lower", "left", "right", "center", "inner", "outer", etc. are all based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship when the invention product / device / equipment is normally used and placed. These terms of orientation or positional relationship are only for the convenience of describing the solution of the present invention or simplifying the description in the specific embodiments, so as to facilitate 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 positional relationship. Therefore, it should not be construed as a limitation to the present invention.

[0022] In addition, when terms such as "horizontal", "vertical", "hanging", "parallel", etc. 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 have a deviation. 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 an error / deviation within ±8%, more preferably an error / deviation within ±6%, more preferably an error / deviation within ±5%, more preferably an error / deviation within ±4%. As long as the corresponding device / component / element is within the error / deviation range, it can still achieve its function in the solution of the present invention.

[0023] 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.

[0024] 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.

[0025] In addition, in the description of the technical solution of the present invention, unless otherwise clearly specified / defined / restricted, where terms such as "set", "installed", "connected", "coupled", "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, and can be connection means commonly used in the art such as welding, riveting, bolting, threaded connection, etc. Such a 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.

[0026] Embodiment 1 As Figures 1 - 5 shown, a performance test experimental device for a vertical hydraulic hoist includes a support frame 1, a gate slot mechanism 3, a working valve 2, a hydraulic hoist system, a load system, a monitoring system, a hydraulic pump station, and an electrical control cabinet. The load system includes a vertical loading system 5 and a horizontal loading system 6.

[0027] As Figures 1 - 2 shown, the support frame 1 is the main structure of the experimental device, and can be installed on the civil engineering foundation 10 through anchor bolts, and is used to provide a support installation foundation for other auxiliary supporting structures of the experimental device and simulate the gate installation position in the normal use state of the hydraulic hoist.

[0028] In one or several embodiments, the support frame 1 can be a gantry frame of a steel truss structure. A gate groove mechanism 3 and a working valve 2 are arranged inside the gantry of the support frame 1, and a hydraulic opening and closing system is arranged at the top of the support frame 1. The hydraulic opening and closing system drives the working valve 2 to move up and down along the gate groove mechanism 3 to simulate the normal working condition of a hydraulic hoist.

[0029] As Figures 1 - 2 shown, the gate groove mechanism 3 can be a vertical steel structure column structure with a chute or track structure for guiding and limiting the vertical movement of the working valve 2.

[0030] In one or several embodiments, the bottom of the gate groove mechanism 3 can be fixedly arranged on the civil engineering foundation 10 to make the relative position of the gate groove mechanism 3 and the support frame 1 stable. The left and right sides of the working valve 2 are slidably matched with the gate groove mechanism 3 to truly simulate the slideways or gate grooves for limiting and guiding on the left and right sides of the working valve 2 under the actual application conditions.

[0031] In an alternative embodiment, the gate groove mechanism 3 can include opposite track mechanisms 31. The track mechanisms 31 can be detachably connected to the inner side of the gantry of the support frame 1 to make the installation of the track mechanisms 31 stable and capable of truly simulating the gate structure in the normal use state of a hydraulic hoist.

[0032] In an alternative embodiment, the track mechanism 31 can be an integral body including a bottom sill, a main rail, a counter rail and a side rail. The bottom of the track mechanism 31 is installed on the civil engineering foundation 10 through anchor bolts. The two track mechanisms 31 are arranged facing each other, and in the vertical direction, the side of the track mechanism 31 can be connected and fixed to the steel structure support frame 1 to provide a stable gantry space for the working valve 2 to move up and down.

[0033] In an alternative embodiment, the tops of the opposite track mechanisms 31 can also be connected and fixed by a crossbeam structure according to actual conditions to ensure that the gate groove mechanism 3 provides a stable gantry space for the working valve 2 to move up and down and truly simulate the actual installation state of the working valve 2.

[0034] As Figures 1 - 3 shown, the working valve 2 can be a steel structure valve with the same proportion as an actual ship lock valve. The external dimensions, weight and support components of the working valve 2 are consistent with those of the real valve structure.

[0035] In an alternative embodiment, the working valve 2 can be a plane fixed-wheel valve. A plurality of wheel-shaped structures are arranged vertically on both sides of the working valve 2 perpendicular to the water flow direction. The wheel-shaped structures can be slidably matched with the track mechanism 31 to enable the working valve 2 to slide smoothly along the track mechanism 31.

[0036] In an alternative embodiment, the working valve 2 may be provided with a hinge portion at the top center for connecting to the hydraulic opening and closing system, and hinge portions for connecting to the vertical loading system 5 symmetrically arranged on both sides of the top center, so that the vertical loads applied by the hydraulic opening and closing system and the vertical loading system 5 can be evenly distributed within the overall range of the working valve 2, enabling the working valve 2 to move stably up and down along the track mechanism 31 under the combined action of the vertical load consistent with the actual working condition load.

[0037] The hydraulic opening and closing system is connected to the top center of the working valve 2 and is used to drive the relative vertical movement of the working valve 2 and the gate slot mechanism 3.

[0038] In one or several embodiments, the hydraulic opening and closing system may include a test oil cylinder 4 and a first hydraulic system 41. The test oil cylinder 4 is vertically arranged on the top of the support frame 1, the test oil cylinder 4 is connected to the top of the working valve 2, and the first hydraulic system 41 is connected to the test oil cylinder 4 through a hydraulic pipeline 7.

[0039] In an alternative embodiment, the test oil cylinder 4 may be hinged to the hinge portion at the top center of the working valve 2 through a short suspension rod, and the top of the short suspension rod may be hingedly connected to the rodless cavity of the test oil cylinder 4.

[0040] In an alternative embodiment, the piston rod of the test oil cylinder 4 may be made of a ceramic piston rod, and is provided with an internal travel detection device and an external absolute rigid travel detection device to ensure the safety and reliability of travel detection.

[0041] In an alternative embodiment, the hydraulic pump station of the first hydraulic system 41 may be arranged on the concrete platform on the ground where the support frame 1 is located and is connected to the test oil cylinder 4 through a hydraulic pipeline 7.

[0042] The vertical loading system 5 is connected to the top of the working valve 2 and is used to combine with the hydraulic opening and closing system to drive the relative vertical movement of the working valve 2 and the gate slot mechanism 3, and provides vertical loads such as simulated gravity, frictional resistance, inertial force, downward suction force and upward buoyancy force of water flow to the working valve 2 through the vertical loading system 5.

[0043] In one or several embodiments, the vertical loading system 5 may include a loading oil cylinder 51 and a second hydraulic system 52. The loading oil cylinder 51 is vertically arranged on the top of the support frame 1, the loading oil cylinder 51 is connected to the top of the working valve 2, and the second hydraulic system 52 is connected to the loading oil cylinder 51 through a hydraulic pipeline 7.

[0044] In an alternative embodiment, two loading oil cylinders 51 are symmetrically arranged on both sides of the test oil cylinder 4.

[0045] In an alternative embodiment, the hydraulic pump station of the second hydraulic system 52 may be disposed on the concrete platform on the ground where the support frame 1 is located and connected to the loading cylinder 51 through a hydraulic pipeline 7.

[0046] The horizontal loading system 6 may be connected to the water-facing surface of the working valve 2 to apply a thrust force to the water-facing surface of the working valve 2, simulating the horizontal hydrodynamic pressure generated by the water flow during the process of opening the working valve 2 in moving water and closing it in static water, such as water impact force, lateral frictional resistance, etc.

[0047] In one or several embodiments, the horizontal loading system 6 may include a frame 61, a link mechanism cylinder assembly 62, and a third hydraulic system. The frame 61 is connected to the water-facing surface of the working valve 2, several link mechanism cylinder assemblies 62 are disposed on the frame 61, the link mechanism cylinder assembly 62 is connected with an abutting portion 63, and the third hydraulic system is connected to the link mechanism cylinder assembly 62 through a hydraulic pipeline 7 and can drive the abutting portion 63 to abut against the water-facing surface of the gate slot mechanism 3.

[0048] In an alternative embodiment, the frame 61 may be a steel frame structural member, may be arranged parallel to the water-facing surface of the working valve 2, and is connected to the working valve 2 through a rod body locally perpendicular to the water-facing surface of the working valve 2.

[0049] In an alternative embodiment, the frame 61 may be an integral steel frame structural member with multiple link mechanism cylinder assemblies 62 distributed thereon. The frame 61 may also be multiple independently arranged steel frame structural members, with link mechanism cylinder assemblies 62 respectively disposed on each steel frame structural member. All the link mechanism cylinder assemblies 62 are connected to the third hydraulic system, enabling each link mechanism cylinder assembly 62 to provide an abutting thrust force to the water-facing surface of the gate slot mechanism 3, and then acting its reaction force on the water-facing surface of the working valve 2.

[0050] In an alternative embodiment, the link mechanism cylinder assembly 62 may include a first link 621, a second link 622, and a telescopic cylinder 623. One end of the first link 621 is connected to the frame 61 and the other end is hinged to the second link 622. The end of the second link 622 away from the first link 621 is provided with an abutting portion 63. One end of the telescopic cylinder 623 is hinged to the frame 61 and the other end is hinged to the second link 622. During use, the telescopic cylinder 623 drives the first link 621 and the second link 622 to rotate relative to each other, realizing the change in the position of the abutting portion 63, so that the abutting portion 63 applies a horizontal thrust force to the water-facing surface of the gate slot mechanism 3, accurately simulating such dynamic horizontal loads and ensuring that the test environment is consistent with the actual working conditions.

[0051] In one or several embodiments, several link mechanism cylinder assemblies 62 are arranged in an array on the water-facing surface of the working valve 2.

[0052] In an alternative embodiment, the connecting rod mechanism oil cylinder assemblies 62 are arranged in two columns, with each column including 4-6 connecting rod mechanism oil cylinder assemblies 62 arranged evenly to ensure that the horizontal load is evenly distributed on the working valve 2.

[0053] In an alternative embodiment, the abutting portion 63 may include rollers, which are detachably connected to the connecting rod mechanism oil cylinder assemblies 62 for convenient replacement of the rollers. Wear-resistant layers 9 are respectively provided at the positions of the rollers and the door groove mechanism 3 corresponding to the abutting portion 63 to improve the contact stability.

[0054] In an alternative embodiment, the third hydraulic system may include a proportional overflow valve group. The proportional overflow valve group is connected to an electric control system 8. By adjusting the electro-hydraulic proportional overflow valve, the horizontal load can be dynamically adjusted. It can automatically and real-time adjust the output load of the horizontal loading system 6 according to the movement state of the hydraulic hoist and the change characteristics of the actual water flow horizontal acting force to meet the test requirements for the horizontal load during the dynamic performance test of the hoist.

[0055] In an alternative embodiment, the third hydraulic system further includes a supporting hydraulic pump station, valve group and other electrical components. The hydraulic pump station of the third hydraulic system can be arranged on the support frame 1 above the working valve 2 and is connected to the telescopic oil cylinders 623 of all the connecting rod mechanism oil cylinder assemblies 62 through hydraulic pipelines 7 to achieve synchronous control of all the connecting rod mechanism oil cylinder assemblies 62.

[0056] It should be noted that the first hydraulic system 41, the second hydraulic system 52 and the third hydraulic system can be respectively hydraulically controlled by independently arranged hydraulic pump stations, and each hydraulic pump station is controlled and adjusted through the electrical components in the electrical control cabinet.

[0057] The monitoring system is used to automatically detect the working status of each part of the test device in real time and monitor the operation data of the hydraulic hoist during the test. Through information processing, it can realize the real-time online monitoring of test parameters such as the running speed, temperature, vibration, oil contamination degree, stroke, pressure, flow rate, voltage, etc. of the hydraulic hoist, providing data support for verifying and evaluating the reliability of the test device.

[0058] In one or several embodiments, the monitoring system may include several sensors arranged distributively. According to the comprehensive analysis of the hydraulic hoist in the early stage, the key monitoring positions for the durability test of the hydraulic hoist are determined, and sensors are arranged at the corresponding measuring points. Through their monitoring data, the running state during the durability test of the hydraulic hoist can be reflected in real time. Through the data analysis of the system, defects and potential faults affecting the safety test of the hydraulic hoist equipment can be discovered in advance, and through information transmission and release, predictive alarms during the test can be provided to ensure the test safety of the hydraulic hoist equipment.

[0059] In an alternative embodiment, the monitoring system may include a vibration monitoring sensor, a speed monitoring sensor, a temperature monitoring sensor, an inclination monitoring sensor, and a noise monitoring sensor 209, and the test oil cylinder 4 is provided with an internal stroke detection mechanism and an external stroke detection mechanism.

[0060] In an alternative embodiment, the vibration monitoring sensor is used to monitor and collect vibration data and information on the operating state of the test device, and the absolute value of the vibration parameter, the change trend of the vibration parameter under specific working conditions, etc. can be used as the evaluation result to analyze and evaluate the vibration characteristics of the equipment under different operating states and different working conditions.

[0061] In an alternative embodiment, the noise monitoring sensor 209 is used to judge the faults of the key parts of the test device that cannot be monitored by invasive sensors and hidden components.

[0062] In an alternative embodiment, as Figure 2 shown, specifically, a first vibration monitoring sensor 201 and a first temperature monitoring sensor 205 may be provided at the lower end cover position of the test oil cylinder 4, a second vibration monitoring sensor 202 and a first inclination monitoring sensor 207 may be provided at the top beam web position of the working valve 2, a third vibration monitoring sensor 203 may be provided at the hinge seat position of the test oil cylinder 4 on the top of the support frame 1, a fourth vibration monitoring sensor 204 may be provided at the upper end cover position of the test oil cylinder 4, a second temperature monitoring sensor 206 may be provided on the test oil cylinder 4, a second inclination monitoring sensor 208 may be provided on the top suspension rod of the working valve 2, and a noise monitoring sensor 209 may be provided at the hydraulic pump station on one side of the support frame 1.

[0063] Taking the vertical hydraulic hoist adopted by a certain canal lock in China as an example, the opening speed of its working valve 2 can reach 8.1 m / min, and the closing speed can reach 16.1 m / min. A test device installed in-situ vertically at a 1:1 ratio is established for performance testing to fully conform to the actual working conditions, and the resultant force simulation of loads in different directions such as gravity, water flow acting force, frictional resistance, water column weight, and water flow uplift force is carried out. Among them, the height of the support frame 1 can be set to 18 m, the height of the gate slot mechanism 3 can be set to 14 m, the orifice size of the working valve 2 is 5.0 m × 6.5 m, and the self-weight is set to 50 t. The opening and closing operations are carried out through a 3000 kN / 400 kN hydraulic hoist set at the top. Two loading cylinders 51 are symmetrically and vertically arranged on both sides of the test cylinder 4. The connecting rod mechanism cylinder assembly 62 can be 10, arranged in two columns, and the output load of a single connecting rod mechanism cylinder assembly 62 can be 38 tons, so that the horizontal loading system 6 can provide a maximum horizontal loading force of 380 tons. By adjusting the electro-hydraulic proportional relief valve, the output load of the horizontal loading system 6 can be automatically controlled to be adjusted between 50 - 380 tons. The abutting part 63 is a roller with a diameter of 300 mm and a stroke that can be 200 mm. Each hydraulic system and the electric control system 8 can be arranged on the concrete platform on the ground where the support frame 1 is located, and an electric control cabinet, a hydraulic pump station, etc. are provided as supporting facilities.

[0064] A performance test device for a vertical hydraulic hoist in this embodiment installs the test cylinder 4 and related hydraulic systems vertically in-situ, fully conforming to the actual working conditions of the hydraulic hoist, accurately simulating the loads such as gravity, suction and uplift force left by moving water, horizontal water pressure of water flow, frictional resistance, and inertial impact force during the operation of the hydraulic hoist. The working valve 2 is driven by the hydraulic hoist system to move along the gate slot mechanism 3, realizing the structural and functional simulation of the lock valve acted on by the existing hydraulic hoist, and being able to achieve the rapid opening and closing of the working valve 2 within the set opening and closing time, meeting the requirements of the rapid opening and closing test. At the same time, the vertical loading system 5 provides a tensile or thrust force in the vertical direction to the working valve 2, realizing the equivalent simulation of the vertical loads such as the valve gravity, water flow uplift force, water column force, and frictional resistance suffered by the working valve 2 under actual working conditions, and the horizontal loading system 6 provides a tensile or thrust force in the horizontal direction to the working valve 2, realizing the equivalent simulation of the horizontal water flow acting force of the working valve 2 under actual working conditions. It can automatically adjust the output loads of the vertical loading system 5 and the horizontal loading system 6 in real time according to the operating state of the hydraulic hoist and the change characteristics of the actual horizontal water flow acting force, conduct dynamic performance tests under different opening and closing speeds, opening and closing times, and opening and closing forces, meet the dynamic performance tests of hydraulic hoists operating under actual complex working conditions, and be able to meet the dynamic performance tests of rapid hydraulic hoists during rapid opening and closing operations. The dynamic performance tests of the hydraulic hoist under different opening and closing speeds, opening and closing times, and opening and closing forces when simultaneously subjected to vertical and horizontal loads can be realized by adjusting the relevant hydraulic systems.

[0065] Embodiment 2 A performance test method for a vertical hydraulic hoist uses a performance test device for a vertical hydraulic hoist as described above, and includes the following steps: Step 1: Conduct a simulation test of the gate opening condition under the set opening and closing time; Step 2: Conduct a simulation test of the gate closing condition; Step 3: Conduct a simulation test of the emergency gate closing condition.

[0066] The performance test method for a vertical hydraulic hoist in this embodiment, by using the above test device, respectively conducts simulation tests of the gate opening condition, the gate closing condition, and the emergency gate closing condition under the set opening and closing time. During the gate opening condition, the three groups of hydraulic pump stations supply liquid to the rod chamber of the test oil cylinder 4, control the loading oil cylinder 51 to provide the resultant force in the vertical direction such as the simulated water column weight and the uplift force, and control the telescopic oil cylinder 623 of the horizontal loading system 6 to simulate the water pressure in the horizontal direction of the dynamic water flow on the working valve 2. Then, the test of the key parameters such as the set gate opening speed and the gate opening time of the hydraulic cylinder is carried out to realize the simulation of the gate opening condition of the fast hydraulic hoist. During the gate closing condition and the emergency gate closing condition, hydraulic control is carried out according to the actual situation, and the corresponding test parameters are adjusted to realize the simulation test of the corresponding conditions, which can realize the dynamic performance test of the hydraulic hoist that meets the operation under the actual complex conditions, and can also meet the dynamic performance test of the fast opening and closing operation of the fast hydraulic hoist, improving the test accuracy.

[0067] 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 in the protection scope of the present invention.

Claims

1. A vertical hydraulic hoist performance test device, characterized in that It includes a hydraulic opening and closing system, a load system, a support frame (1) and a working valve (2); The support frame (1) is detachably connected with a gate slot mechanism (3), and the working valve (2) is slidably matched with the gate slot mechanism (3); The hydraulic opening and closing system is connected to the working valve (2), and the hydraulic opening and closing system is used to drive the relative movement of the working valve (2) and the gate slot mechanism (3); The load system is connected to the working valve (2), and the load system is used to apply simulated working conditions loads to the working valve (2). The load system includes a vertical loading system (5) and a horizontal loading system (6).

2. The performance test device for a vertical hydraulic hoist according to claim 1, wherein, The hydraulic opening and closing system includes a test oil cylinder (4) and a first hydraulic system (41). The test oil cylinder (4) is vertically arranged at the top of the support frame (1), the test oil cylinder (4) is connected to the top of the working valve (2), and the first hydraulic system (41) is connected to the test oil cylinder (4) through a hydraulic pipeline (7).

3. The performance test device for a vertical hydraulic hoist according to claim 2, characterized in that, The vertical loading system (5) includes a loading oil cylinder (51) and a second hydraulic system (52). The loading oil cylinder (51) is vertically arranged at the top of the support frame (1), the loading oil cylinder (51) is connected to the top of the working valve (2), and the two loading oil cylinders (51) are arranged on both sides of the test oil cylinder (4). The second hydraulic system (52) is connected to the loading oil cylinder (51) through a hydraulic pipeline (7).

4. The performance test device for a vertical hydraulic hoist according to claim 1, wherein, The horizontal loading system (6) includes a frame (61), a connecting rod mechanism oil cylinder assembly (62) and a third hydraulic system. The frame (61) is connected to the water-facing side of the working valve (2), the connecting rod mechanism oil cylinder assembly (62) is arranged on the frame (61), the connecting rod mechanism oil cylinder assembly (62) is connected with an abutting part (63), and the third hydraulic system is connected to the connecting rod mechanism oil cylinder assembly (62) through a hydraulic pipeline (7) and can drive the abutting part (63) to push against the water-facing side of the gate slot mechanism (3).

5. The performance test device for a vertical hydraulic hoist according to claim 4, characterized in that The connecting rod mechanism oil cylinder assembly (62) includes a first connecting rod (621), a second connecting rod (622) and a telescopic oil cylinder (623). One end of the first connecting rod (621) is connected to the frame (61) and the other end is hinged to the second connecting rod (622). The abutting part (63) is arranged at the end of the second connecting rod (622) far from the first connecting rod (621). One end of the telescopic oil cylinder (623) is hinged to the frame (61) and the other end is hinged to the second connecting rod (622). A plurality of the connecting rod mechanism oil cylinder assemblies (62) are arranged in an array on the water-facing side of the working valve (2).

6. The performance test device for a vertical hydraulic hoist according to claim 5, characterized in that, The third hydraulic system includes a proportional overflow valve group, and the proportional overflow valve group is connected to an electric control system (8).

7. An experimental device for testing the performance of a vertical hydraulic hoist according to claim 5, characterized in that, The abutting part (63) includes a roller, and a wear-resistant layer (9) is arranged on the roller and / or at the position of the gate slot mechanism (3) corresponding to the abutting part (63).

8. The performance test device for a vertical hydraulic hoist according to claim 1, characterized in that, The support frame (1) includes a truss-structured gantry frame. The support frame (1) is arranged on the civil engineering foundation (10). The gate slot mechanism (3) is arranged on the civil engineering foundation (10). The gate slot mechanism (3) includes oppositely arranged track mechanisms (31), and the track mechanisms (31) are detachably connected to the support frame (1).

9. The performance test device for a vertical hydraulic hoist according to claim 2, characterized in that, It further includes a monitoring system. The monitoring system includes a number of distributed sensors. The monitoring system includes vibration monitoring sensors, speed monitoring sensors, temperature monitoring sensors, inclination monitoring sensors, and noise monitoring sensors (209). The test oil cylinder (4) is provided with an in-built stroke detection mechanism and an external stroke detection mechanism.

10. A performance test method for a vertical hydraulic hoist, characterized in that Adopt a vertical hydraulic hoist performance test device as described in any one of claims 1-9, and include the following steps: Step 1: Conduct a simulation test of the gate opening condition under the set opening and closing time; Step 2: Conduct a simulation test of the gate closing condition; Step 3: Conduct a simulation test of the emergency gate closing condition.

Images