Bearing bush test platform for water guide mechanism of water wheel

Abstract

A water wheel water guide mechanism bearing bush test platform comprises a test box, a test assembly, a driving assembly and an environment simulation assembly. The testing assembly comprises two clamping plates, a bearing seat, a pushing piece and a bearing shaft, one clamping plate is slidably connected with the testing box in the direction away from the other clamping plate, the other clamping plate is fixedly connected with the testing box, the pushing piece is installed on the testing box, the output end of the pushing piece is connected with the slidable clamping plate, and the bearing seat is fixedly connected with the bearing shaft. The bearing shaft is rotationally connected with the test box and penetrates through the bearing seat; the output end of the driving assembly is connected with the bearing shaft; the discharge end of the environment simulation assembly is communicated with the test box; the slidable clamping plate is driven by the pushing part to move towards the other clamping plate, so that a normal load applied to the bearing bush is simulated, the bearing shaft is driven by the driving assembly to act to accurately simulate an actual complex motion mode of the guide vane of the water turbine, and a water medium can be conveyed into the test box through the environment simulation assembly. The real working condition of the bearing bush is simulated.

Description

Technical Field

[0001] This invention belongs to the field of bearing testing technology, and specifically relates to a bearing testing platform for a water turbine guide mechanism. Background Technology

[0002] As a critical friction pair component in the turbine's guide vane mechanism, the performance of the bearings directly affects the reliability and lifespan of the entire unit. Therefore, a testing platform capable of simulating real-world bearing operating conditions is needed to achieve precise quantitative evaluation of the bearings' friction, wear, and lubrication performance. This will improve the reliability of bearing products and significantly reduce the risk of field failure, providing indispensable data support and technical assurance for the long-term safe operation of critical equipment.

[0003] In actual working conditions, these types of bearings need to withstand the combined effects of heavy loads, mud and water erosion, and low-speed oscillating motion, making the working environment extremely harsh.

[0004] However, a dedicated testing platform that integrates oscillating motion simulation, heavy load application, aquatic environment reproduction, and real-time monitoring of multiple parameters is currently lacking, resulting in a significant gap between experimental data and actual service performance. Therefore, developing a dedicated testing platform that can realistically simulate the actual working conditions of turbine guide vane bearings and possesses precise measurement capabilities is of significant theoretical and practical importance for improving bearing performance and promoting technological advancement in the industry. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a test platform for the bearing of a water turbine guide vane, which can accurately simulate the actual complex motion mode of the water turbine guide vane.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows: A test platform for a water turbine guide mechanism bearing bush includes a test box, a test assembly, a drive assembly, and an environmental simulation assembly. The test assembly includes two clamping plates, a bearing seat, a pusher, and a load-bearing shaft. One clamping plate is slidably connected to the test box in a direction away from the other clamping plate, while the other clamping plate is fixedly connected to the test box. A clamping gap is formed between the two clamping plates to hold and fix the bearing seat. The pusher is mounted on the test box, and its output end is connected to a slidable clamping plate to drive the clamping plate to slide. The load-bearing shaft is rotatably connected to the test box and passes through the bearing seat. An installation gap is formed between the load-bearing shaft and the bearing seat to install the bearing bush. The output end of the drive assembly is connected to the load-bearing shaft to drive its movement. The discharge end of the environmental simulation assembly is connected to the test box to deliver water medium into the test box.

[0007] Furthermore, the two clamping plates have inwardly recessed arc-shaped grooves on opposite sides, and the bearing housing includes two detachably connected arc-shaped bearings. The opposite sides of the two arc-shaped bearings are respectively embedded in the two arc-shaped grooves and fixedly connected to the corresponding clamping plates.

[0008] Furthermore, the pushing component is a hydraulic cylinder, which is installed on the side wall of the test chamber. The output end of the hydraulic cylinder extends into the test chamber and is connected to the sliding clamp. The inner wall of the test chamber is provided with a guide block, and the clamp is slidably connected to the guide block.

[0009] Furthermore, it also includes two support seats fixedly installed inside the test chamber, with the two ends of the support shaft rotatably connected to the two support seats respectively.

[0010] Furthermore, the testing assembly also includes a temperature sensor, which is installed in a groove on the inner wall of the bearing housing, with the sensing end of the temperature sensor facing the bearing bush within the installation gap.

[0011] Furthermore, the testing assembly also includes a two-dimensional force sensor, which is mounted between the sliding clamp and the bearing housing.

[0012] Furthermore, the drive assembly includes a motor and a rotating shaft. The output end of the motor is connected to the bearing shaft via the rotating shaft and is used to drive the bearing shaft to rotate at a constant speed, rotate at a variable speed, and / or oscillate back and forth.

[0013] Furthermore, the environmental simulation component includes a water tank and a sediment dosing device. The water tank has an inlet and an outlet on its side wall. The outlet is connected to the test chamber. The output end of the sediment dosing device is connected to the water tank for adding sediment into the water tank.

[0014] Furthermore, the environmental simulation component also includes a pH regulator, the output of which is connected to the water tank for conveying acidic or alkaline media into the water tank.

[0015] Furthermore, it also includes a first inlet / outlet water pipe and a second inlet / outlet water pipe located on both sides of the test box, with the first inlet / outlet water pipe positioned above the second inlet / outlet water pipe, and the water outlet of the water tank connected to either the first inlet / outlet water pipe or the second inlet / outlet water pipe.

[0016] Furthermore, it also includes four drainage pipes, which are respectively arranged on the four inner walls of the test chamber. Each drainage pipe is closed at both ends, and multiple nozzles are installed on the side of each drainage pipe facing the test component. The multiple nozzles are arranged sequentially along the length of the drainage pipe. The first inlet and outlet water pipes can be connected to any drainage pipe via four valves.

[0017] Furthermore, it also includes a hanging assembly, which is arranged on the inner wall of the test chamber and is used to connect foreign objects.

[0018] Furthermore, the hanging assembly includes a hanging box, a pressure plate, and a pressing screw. The hanging box has an opening on one side facing the test assembly and is recessed inward to form a meshing cavity. The pressure plate is set in the meshing cavity and is slidably connected to the hanging box. The pressing screw passes through a threaded hole on the hanging box and is rotatably connected to the pressure plate. A meshing gap is formed between the pressure plate and the inner wall of the meshing cavity of the hanging box.

[0019] The present invention can achieve the following beneficial effects: The bearing bush to be tested is installed in the installation gap between the bearing shaft and the bearing housing. The sliding clamp is moved towards the other clamp by the jacking component, thereby simulating the normal load applied to the bearing bush. The bearing shaft is driven by the drive assembly to accurately simulate the actual complex motion mode of the turbine guide vanes. The environmental simulation component can deliver water medium into the test chamber to simulate the real working conditions of the bearing bush, fundamentally solving the problem of the disconnect between existing experimental data and field service performance. Attached Figure Description

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments: Figure 1 A schematic diagram of the overall structure of the bearing test platform of the water turbine guide mechanism described in this embodiment of the invention is provided. Figure 2 for Figure 1 A schematic diagram of the structure of the test component; Figure 3 for Figure 2 Installation diagram of the central bearing bush; Figure 4 for Figure 2 Installation diagram of the guide frame; Figure 5 for Figure 1 A schematic diagram of the structure of the drive component; Figure 6 for Figure 1 A schematic diagram of the structure of the environmental simulation component; Figure 7 for Figure 4 A schematic diagram of the water inlet and outlet structure of the test chamber; Figure 8 for Figure 1 Schematic diagram of the arrangement of the central drainage tube; Figure 9 for Figure 8 The schematic diagram shows how the first inlet and outlet water pipes can be connected to any drain pipe via four valves. Figure 10 for Figure 7 Enlarged schematic diagram of part A in the middle.

[0021] The diagram shows: a water turbine guide mechanism bearing test platform 1, a test box 100, a guide block 110, a bearing seat 120, a first inlet / outlet water pipe 130, a second inlet / outlet water pipe 140, a diversion pipe 150, a nozzle 151, a valve 160, a test assembly 200, a clamping plate 210, an arc-shaped groove 211, a bearing seat 220, an arc-shaped bearing 221, a jacking component 230, a hydraulic cylinder 231, a bearing shaft 240, a temperature sensor 250, a two-dimensional force sensor 260, a drive assembly 300, a motor 310, a rotating shaft 320, an environmental simulation assembly 400, a water tank 410, a water inlet 411, a water outlet 412, a sediment addition component 420, a pH adjustment component 430, a hanging component 500, a hanging box 510, a meshing cavity 511, a threaded hole 512, a meshing gap 513, a pressure plate 520, and a pressing screw 530. Detailed Implementation

[0022] like Figure 1 , Figure 2 and Figure 3 As shown in the figure, an embodiment of the present invention provides a test platform for a water turbine guide mechanism bearing, including a test box 100, a test component 200, a drive component 300, and an environmental simulation component 400. The test component 200 includes two clamping plates 210, a bearing seat 220, a pusher 230, and a bearing shaft 240. One clamping plate 210 is slidably connected to the test box 100 in a direction away from the other clamping plate 210, and the other clamping plate 210 is fixedly connected to the test box 100. A clamping mechanism for holding and fixing the bearing seat 220 is formed between the two clamping plates 210. The pusher 230 is mounted on the test chamber 100 with a gap. The output end of the pusher 230 is connected to the sliding clamp 210 to drive the clamp 210 to slide. The bearing shaft 240 is rotatably connected to the test chamber 100 and passes through the bearing seat 220. An installation gap is formed between the bearing shaft 240 and the bearing seat 220 for installing the bearing bush. The output end of the drive assembly 300 is connected to the bearing shaft 240 to drive the bearing shaft 240 to move. The discharge end of the environmental simulation assembly 400 is connected to the test chamber 100 to transport water medium into the test chamber 100.

[0023] During implementation, the bearing bush to be tested is installed in the installation gap between the bearing shaft 240 and the bearing seat 220. The jacking component 230 drives the sliding clamp 210 to move towards the other clamp 210, thereby simulating the normal load applied to the bearing bush. The drive assembly 300 drives the bearing shaft 240 to move, so as to accurately simulate the actual complex motion mode of the turbine guide vanes. The environmental simulation component 400 can transport water medium into the test chamber 100 to simulate the real working conditions of the bearing bush, fundamentally solving the problem of the disconnect between existing experimental data and field service performance.

[0024] The test chamber 100 in this embodiment provides a closed environment for the simulation testing of bearing bushes. The test chamber 100 in this embodiment is a square box, but a cylindrical box structure can also be used; there is no limitation on this.

[0025] The test assembly 200 in this embodiment provides a platform for the installation of the bearing bush. Specifically, the test assembly 200 includes two clamping plates 210, a bearing housing 220, a pusher 230, and a bearing shaft 240. One clamping plate 210 is slidably connected to the test box 100 in a direction away from the other clamping plate 210, and the other clamping plate 210 is fixedly connected to the test box 100. A clamping gap is formed between the two clamping plates 210 for clamping and fixing the bearing housing 220. The pusher 230 is mounted on the test box 100, and the output end of the pusher 230 is connected to the slidable clamping plate 210 for driving the clamping plate 210 to slide. The bearing shaft 240 is rotatably connected to the test box 100 and passes through the bearing housing 220. An installation gap is formed between the bearing shaft 240 and the bearing housing 220 for installing the bearing bush.

[0026] To facilitate the installation of the bearing bush, in one embodiment, the two clamping plates 210 have inwardly recessed arc-shaped grooves on opposite sides. The bearing housing 220 includes two detachably connected arc-shaped bearings, with the opposite sides of the two arc-shaped bearings respectively fitted into the two arc-shaped grooves and fixedly connected to the corresponding clamping plates 210. The arc-shaped bearings can be fixed to the bearing housing 220 using screws or other connecting components.

[0027] During installation, first move the two clamping plates 210 back to back to a certain distance, place the bearing bush between the two clamping plates 210, and then move the two clamping plates 210 relative to each other until the two arc bearings clamp the bearing bush, thus completing the installation process of the bearing bush.

[0028] After the bearing shell is installed, the two clamping plates 210 are moved relative to each other by the jacking member 230, thereby applying a normal load to the bearing shell. Figure 3 and Figure 4 As shown, in one embodiment, the pushing component 230 is a hydraulic cylinder, which is installed on the side wall of the test chamber 100. The output end of the hydraulic cylinder extends into the test chamber 100 and is connected to the sliding clamping plate 210. The inner wall of the test chamber 100 is provided with a guide block 110, and the clamping plate 210 is slidably connected to the guide block 110. Of course, the pushing component 230 can also be implemented using an electric push rod, a cylinder, or other structures.

[0029] This embodiment also includes two support seats 241 fixedly installed inside the test box 100, and the two ends of the support shaft 240 are rotatably connected to the two support seats 241 respectively.

[0030] To facilitate monitoring the bearing temperature, in one embodiment, the test assembly 200 further includes a temperature sensor 250. The temperature sensor 250 is installed in a groove on the inner wall of the bearing housing 220, with its detection end facing the bearing within the installation gap. Specifically, the probe of the temperature sensor 250 (such as a K-type thermocouple or platinum resistance thermometer) is embedded in a pre-drilled hole inside the bearing or closely fitted to the back of the bearing, for real-time monitoring of the bearing's operating temperature during the test.

[0031] To facilitate the understanding of the frictional force between the bearing bush and the bearing shaft 240 and the normal load on the bearing bush, in one embodiment, the test assembly 200 further includes a two-dimensional force sensor 260 installed on the force flow path between the clamping plate 210 and the bearing seat 220. Specifically, the two-dimensional force sensor 260 is installed at a position between the slidable clamping plate 210 and the bearing seat 220. This sensor can directly and synchronously measure the normal load generated by the thrust from the hydraulic rod (213) and the tangential frictional force generated by the friction between the bearing bush and the bearing shaft 240.

[0032] The evaluation process for the overall performance of bearing bushes is as follows: Initially, the pusher 230 does not apply force to the bearing bush, and there is a certain clearance between the bearing bush in the bearing housing 220 and the bearing shaft 240; they are not in contact. After the pusher 230 is activated, the clamp drives the sliding clamp 210 to move towards the other clamp 210 until the inner surface of the bearing bush contacts and presses against the outer surface of the bearing shaft 240. At this point, the hydraulic pressure is ultimately converted into a normal load acting on the bearing bush through this force flow path.

[0033] The principle of friction generation and measurement is as follows: When the bearing shaft 240 moves, friction is generated between it and the bearing bush. This friction reacts on the bearing housing 220 and the clamping plate 210, attempting to push it to move tangentially. This tangential force is directly measured by a two-dimensional force sensor 260 installed on the force flow path. Based on the measured data, the coefficient of friction (μ = friction force / normal load) can be calculated in real time, and the temperature rise of the bearing bush is monitored by a temperature sensor 250. All data are collected and recorded synchronously to evaluate the overall performance of the bearing bush.

[0034] In this embodiment, the drive assembly 300 is used to drive the bearing shaft 240 to move. Specifically, the drive assembly 300 can control the bearing shaft 240 to perform uniform rotational motion, variable speed rotational motion, or reciprocating oscillating motion at a specific angle and frequency, so as to accurately simulate the actual complex motion mode of the turbine guide vanes.

[0035] like Figure 5As shown, in one embodiment, the drive assembly 300 includes a motor 310 and a rotating shaft 320. The output end of the motor 310 is connected to the bearing shaft 240 via the rotating shaft 320, and is used to drive the bearing shaft 240 to rotate at a constant speed, rotate at a variable speed, and / or oscillate reciprocally. The free end of the rotating shaft 320 passes through a rolling bearing 242 mounted on the side wall of the test chamber 100, extends into the test chamber 100, and connects to the bearing shaft 240.

[0036] Specifically, the motor 310 can operate under the precise instructions of the controller, directly transmitting its rotational power to the rotating shaft 320, thereby driving it to perform precise rotational motion. By programming and controlling the speed, direction, and angle of the motor 310, various complex motion modes such as uniform rotation, variable speed rotation, or reciprocating oscillation at a specific angle of the rotating shaft 320 can be realized, so as to highly reproduce the complex motion conditions of the turbine guide vanes in actual operation.

[0037] like Figure 6 As shown, the environmental simulation component 400 in this embodiment is used to simulate the actual underwater working environment of the bearing bush. The discharge end of the environmental simulation component 400 is connected to the test chamber 100 and is used to deliver water medium into the test chamber 100. After the water medium is prepared in the water tank 410, it is introduced into the test chamber 100.

[0038] Specifically, the water medium usually contains silt in addition to water. Therefore, in one embodiment, the environmental simulation component 400 includes a water tank 410 and a silt dosing device 420. The side wall of the water tank 410 is provided with an inlet 411 and an outlet 412. The outlet 412 is connected to the test chamber 100. The output end of the silt dosing device 420 is connected to the water tank and is used to add silt to the water tank 410.

[0039] In this embodiment, the sediment addition device 420 is a sediment addition pipe installed at the top of the water tank 410, which allows for the manual addition of an appropriate amount of sediment into the water tank 410. Of course, an automatic feeder or other similar structure can also be used to achieve this.

[0040] To further simulate the underwater working environment of the bearing, it is also necessary to adjust the pH of the water medium. Therefore, in one embodiment, the environment simulation component 400 also includes a pH regulator 430. The output end of the pH regulator 430 is connected to the water tank 410 and is used to deliver acidic or alkaline media to the water tank 410.

[0041] In this embodiment, the pH regulating component 430 includes an acid bottle 431 and an alkali bottle 432 connected to the water tank 410. Valves are installed at the outlet ends of the acid bottle 431 and the alkali bottle 432. The valves control the connection between them and the water tank 410. By adding acid or alkali to the water tank 410, the desired pH level of the water medium can be obtained.

[0042] In summary, by adjusting the sediment content and pH value of the water environment, different river water qualities can be simulated.

[0043] In one embodiment, the test chamber 100 is further provided with a first inlet / outlet pipe 120 and a second inlet / outlet pipe 130 on both sides. The first inlet / outlet pipe 120 is located above the second inlet / outlet pipe 130, and the outlet 412 of the water tank 410 is connected to the first inlet / outlet pipe 120 or the second inlet / outlet pipe 130.

[0044] like Figure 7 As shown, when the outlet 412 of the water tank 410 is connected to the first inlet / outlet pipe 120, a water flow from top to bottom through the bearing can be formed in the test chamber 100; when the outlet 412 of the water tank 410 is connected to the second inlet / outlet pipe 130, a water flow from bottom to top through the bearing can be formed in the test chamber 100, which can be determined according to actual needs.

[0045] To increase the diversity of water flow directions, such as Figure 8 and Figure 9 As shown, in one embodiment, it also includes four drainage pipes 140, which are respectively arranged on the four inner walls of the test chamber 100. Both ends of each drainage pipe 140 are closed, and multiple nozzles 141 are installed on the side of each drainage pipe 140 facing the test assembly 200. The multiple nozzles 141 are arranged sequentially along the length of the drainage pipe 140. The first inlet and outlet water pipe 120 can be connected to any drainage pipe 140 via four valves 142.

[0046] Specifically, the aforementioned drainage pipe 140 can be set horizontally to form a water flow in the direction of a horizontal plane; the aforementioned drainage pipe 140 can also be set vertically to form a water flow in the direction of a vertical plane; of course, it can also form a water flow in the direction of an inclined plane.

[0047] To facilitate adjustment of the setting angle of the drainage tube 140, the drainage tube 140 can be rotatably connected to the inner wall of the test box 100 via a connecting shaft, and the drainage tube 140 can be fixed by fasteners such as pins.

[0048] In this embodiment, multiple nozzles 141 are rotatably and sealedly connected to the drainage tube 140, and the angle of the nozzles 141 can be adjusted.

[0049] Of course, there may be foreign objects such as aquatic plants and fishing nets in the water during operation. Therefore, such as Figure 10 As shown, this embodiment also includes a hanging component 500, which is arranged on the inner wall of the test box 100. The hanging component 500 is used to connect foreign objects such as aquatic plants and fishing nets.

[0050] In one embodiment, the hanging assembly 500 includes a hanging box 510, a pressure plate 520, and a pressing screw 530. The hanging box 510 has an opening on the side facing the test assembly 200 and is recessed inward to form a meshing cavity 511. The pressure plate 520 is disposed in the meshing cavity 511 and is slidably connected to the hanging box 510. The pressing screw 530 passes through a threaded hole on the hanging box 510 and is rotatably connected to the pressure plate 520. A meshing gap is formed between the pressure plate 520 and the inner wall of the meshing cavity 511 of the hanging box 510.

[0051] Specifically, the location and quantity of the aforementioned hanging components 500 should be determined according to actual needs.

[0052] Workflow: The entire bearing test platform testing process can be divided into two main stages: environmental preparation and performance testing. First, the complex water environment simulation stage: the operator adds clean water to the system water tank 410 and inputs water quality parameters (such as pH value and sediment content) according to the target working conditions; then, the system adds acid and alkali solutions and sediment quantitatively through specific inlets and automatically detects their concentration. If the set value is not reached, the addition and detection are repeated until the water medium that meets the design requirements is prepared. Finally, the water is pumped into the test chamber 100 to submerge the bearing friction pair.

[0053] Next, the bearing performance testing phase begins: the operator inputs motion parameters (speed, form) and load values ​​through the controller; the controller then synchronously drives the motor 310 and the pusher 230, causing the bearing shaft 240 to move according to the set pattern and applying a specified load to the bearing; during the test, the two-dimensional force sensor 260 and the temperature sensor 250 monitor the data in real time, and the system automatically calculates and dynamically displays the friction coefficient and temperature curve; after the test is completed, the system saves all the data for evaluating the comprehensive tribological performance of the bearing.

[0054] Compared with existing technologies: The bearing bush to be tested is installed in the installation gap between the bearing shaft 240 and the bearing housing 220. The jacking component 230 drives the sliding clamp 210 to move towards the other clamp 210, thereby simulating the normal load applied to the bearing bush. The drive assembly 300 drives the bearing shaft 240 to move, so as to accurately simulate the actual complex motion mode of the turbine guide vanes. The environmental simulation component 400 can deliver water medium into the test chamber 100 to simulate the real working conditions of the bearing bush, fundamentally solving the problem of the disconnect between existing experimental data and field service performance.

[0055] The above embodiments are merely preferred technical solutions of the present invention and should not be considered as limitations on the present invention. The scope of protection of the present invention should be defined as the technical solutions described in the claims, including equivalent substitutions of the technical features described in the claims. That is, equivalent substitutions and improvements within this scope are also within the scope of protection of the present invention.

Claims

1. A test platform for bearing bushes of a water turbine guide mechanism (1), characterized in that, include: Test box (100); The test assembly (200) includes two clamping plates (210), a bearing housing (220), a pusher (230), and a bearing shaft (240). One clamping plate (210) is slidably connected to the test box (100) in a direction away from the other clamping plate (210), and the other clamping plate (210) is fixedly connected to the test box (100). A clamping gap is formed between the two clamping plates (210) for clamping and fixing the bearing housing (220). The pusher (230) is mounted on the test box (100), and the output end of the pusher (230) is connected to the slidable clamping plate (210) for driving the clamping plate (210) to slide. The bearing shaft (240) is rotatably connected to the test box (100) and passes through the bearing housing (220). An installation gap is formed between the bearing shaft (240) and the bearing housing (220) for installing the bearing bush. A drive assembly (300) has its output end connected to the bearing shaft (240) for driving the bearing shaft (240) to move; An environmental simulation component (400) has its discharge end connected to a test chamber (100) for conveying water medium into the test chamber (100).

2. The test platform (1) for the bearing bush of the water turbine guide mechanism according to claim 1, characterized in that, The two clamps (210) have inwardly recessed arc-shaped grooves (211) on opposite sides. The bearing housing (220) includes two detachably connected arc-shaped bearings (221). The opposite sides of the two arc-shaped bearings (221) are respectively embedded in the two arc-shaped grooves (211) and fixedly connected to the corresponding clamps (210).

3. The test platform (1) for the bearing bush of the water turbine guide mechanism according to claim 1, characterized in that, The pusher (230) is a hydraulic cylinder (231). The hydraulic cylinder (231) is installed on the side wall of the test box (100). The output end of the hydraulic cylinder (231) extends into the test box (100) and is connected to the sliding clamp (210). The inner wall of the test box (100) is provided with a guide block (110). The clamp (210) is slidably connected to the guide block (110).

4. The test platform (1) for the bearing bush of the water turbine guide mechanism according to claim 1, characterized in that, It also includes two support seats (120) fixedly installed inside the test box (100), and the two ends of the support shaft (240) are rotatably connected to the two support seats (120) respectively.

5. The test platform (1) for the bearing bush of the water turbine guide mechanism according to claim 1, characterized in that, The test assembly (200) also includes a temperature sensor (250), which is installed in a groove on the inner wall of the bearing housing (220), with the detection end of the temperature sensor (250) facing the bearing bush in the installation gap.

6. The test platform (1) for the bearing bush of the water turbine guide mechanism according to claim 1, characterized in that, The test assembly (200) also includes a two-dimensional force sensor (260), which is mounted between the sliding clamp (210) and the bearing housing (220).

7. The test platform (1) for the bearing bush of the water turbine guide mechanism according to claim 1, characterized in that, The drive assembly (300) includes a motor (310) and a rotating shaft (320). The output end of the motor (310) is connected to the bearing shaft (240) via the rotating shaft (320) and is used to drive the bearing shaft (240) to rotate at a constant speed, rotate at a variable speed, and / or oscillate back and forth.

8. The test platform (1) for the bearing bush of the water turbine guide mechanism according to claim 1, characterized in that, The environmental simulation component (400) includes a water tank (410) and a sediment dosing device (420). The water tank (410) has an inlet (411) and an outlet (412) on its side wall. The outlet (412) is connected to the test chamber (100). The output end of the sediment dosing device (420) is connected to the water tank (410) and is used to add sediment into the water tank (410).

9. The test platform (1) for the bearing bush of the water turbine guide mechanism according to claim 8, characterized in that, The environmental simulation component (400) also includes a pH regulator (430), the output of which is connected to the water tank (410) for conveying acidic or alkaline media to the water tank (410).

10. The test platform (1) for the bearing bush of the water turbine guide mechanism according to claim 8, characterized in that, It also includes a first inlet / outlet pipe (130) and a second inlet / outlet pipe (140) located on both sides of the test box (100). The first inlet / outlet pipe (130) is located above the second inlet / outlet pipe (140), and the outlet (412) of the water tank (410) is connected to the first inlet / outlet pipe (130) or the second inlet / outlet pipe (140).

11. The test platform (1) for the bearing bush of the water turbine guide mechanism according to claim 10, characterized in that, It also includes four drainage pipes (150), which are respectively arranged on the four inner walls of the test box (100). Each drainage pipe (150) is closed at both ends. Each drainage pipe (150) has multiple nozzles (151) installed on the side facing the test assembly (200). The multiple nozzles (151) are arranged sequentially along the length of the drainage pipe (150). The first inlet and outlet water pipe (130) can be connected to any drainage pipe (150) through four valves (160).

12. The test platform (1) for the bearing bush of the water turbine guide mechanism according to claim 1, characterized in that, It also includes a hanging assembly (500) arranged on the inner wall of the test chamber (100), which is used to connect foreign objects.

13. The test platform (1) for the bearing bush of the water turbine guide mechanism according to claim 12, characterized in that, The hanging assembly (500) includes a hanging box (510), a pressure plate (520), and a pressing screw (530). The hanging box (510) has an opening on one side facing the test assembly (200) and is recessed inward to form a meshing cavity (511). The pressure plate (520) is disposed in the meshing cavity (511) and is slidably connected to the hanging box (510). The pressing screw (530) passes through a threaded hole (512) on the hanging box (510) and is rotatably connected to the pressure plate (520). A meshing gap (513) is formed between the pressure plate (520) and the inner wall of the meshing cavity (511) of the hanging box (510).

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