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CN-121994484-A - Bearing bush test platform of water wheel water guide mechanism

CN121994484ACN 121994484 ACN121994484 ACN 121994484ACN-121994484-A

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, wherein the test assembly comprises two clamping plates, a bearing seat, a pushing piece and a bearing shaft, one clamping plate is connected with the test box in a sliding mode along the direction away from the other clamping plate, the other clamping plate is fixedly connected with the test box, the pushing piece is arranged on the test box, the output end of the pushing piece is connected with the sliding clamping plate, the bearing shaft is connected with the test box in a rotating mode 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 sliding clamping plate is driven to move towards the other clamping plate through the pushing piece, so that normal load applied to a bearing bush is simulated, the driving assembly drives the bearing shaft to act, the actual complex movement mode of a guide vane of a water turbine is accurately simulated, and an aqueous medium can be conveyed into the test box through the environment simulation assembly, so that the actual working condition of the bearing bush is simulated.

Inventors

  • GENG ZAIMING
  • LI CHONG
  • HUANG KUI
  • Zhao Gaipeng
  • YE XIANGYOU
  • ZHANG RUYA
  • LIU HUI
  • WU TAO
  • LIANG QIAN
  • HUANG ZHIGAO
  • Hou Qingjiang
  • ZHOU HUAMING
  • JI DONGLEI
  • YANG JIE

Assignees

  • 中国长江电力股份有限公司
  • 武汉数字化设计与制造创新中心有限公司

Dates

Publication Date
20260508
Application Date
20260121

Claims (13)

  1. 1. A water wheel water guide mechanism axle bush test platform (1), characterized by comprising: a test box (100); The test assembly (200) comprises two clamping plates (210), a bearing seat (220), a pushing piece (230) and a bearing shaft (240), wherein one clamping plate (210) is in sliding connection with the test box (100) along the direction away from the other clamping plate (210), the other clamping plate (210) is fixedly connected with the test box (100), a clamping gap for clamping the fixed bearing seat (220) is formed between the two clamping plates (210), the pushing piece (230) is arranged on the test box (100), the output end of the pushing piece (230) is connected with the slidable clamping plate (210) and used for driving the clamping plate (210) to slide, the bearing shaft (240) is in rotary connection with the test box (100) and penetrates through the bearing seat (220), and an installation gap for installing a bearing bush is formed between the bearing shaft (240) and the bearing seat (220); the output end of the driving assembly (300) is connected with the bearing shaft (240) and is used for driving the bearing shaft (240) to act; and the discharge end of the environment simulation assembly (400) is communicated with the test box (100) and is used for conveying the aqueous medium into the test box (100).
  2. 2. The water wheel water guide mechanism bearing bush test platform (1) according to claim 1, wherein an inward concave arc-shaped groove (211) is formed on one side opposite to the two clamping plates (210), the bearing seat (220) comprises two arc-shaped bearings (221) which are detachably connected, and one side opposite to the two arc-shaped bearings (221) is respectively clamped in the two arc-shaped grooves (211) and fixedly connected with the corresponding clamping plates (210).
  3. 3. The water wheel water guide mechanism bearing bush test platform (1) according to claim 1, wherein the pushing piece (230) is a hydraulic cylinder (231), the hydraulic cylinder (231) is mounted 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 with a slidable clamping plate (210), a guide block (110) is arranged on the inner wall of the test box (100), and the clamping plate (210) is in sliding connection with the guide block (110).
  4. 4. The water wheel water guide mechanism bearing bush test platform (1) according to claim 1, further comprising two bearing seats (120) fixedly arranged in the test box (100), wherein two ends of the bearing shaft (240) are respectively in rotary connection with the two bearing seats (120).
  5. 5. The water wheel water guide mechanism bushing testing platform (1) of claim 1, wherein the testing assembly (200) further comprises a temperature sensor (250), the temperature sensor (250) is installed at a groove of the inner wall of the bearing seat (220), and the detection end of the temperature sensor (250) is arranged right opposite to the bushing in the installation gap.
  6. 6. The water wheel water guide bearing bush test platform (1) according to claim 1, wherein the test assembly (200) further comprises a two-dimensional force sensor (260), the two-dimensional force sensor (260) being mounted at a position between the slidable clamping plate (210) and the bearing housing (220).
  7. 7. The water wheel water guide mechanism bushing test platform (1) according to claim 1, wherein the driving assembly (300) comprises a motor (310) and a rotating shaft (320), and an output end of the motor (310) is connected with the bearing shaft (240) through the rotating shaft (320) for driving the bearing shaft (240) to rotate at a constant speed, rotate at a variable speed and/or swing reciprocally.
  8. 8. The water wheel water guide mechanism bearing bush test platform (1) according to claim 1, wherein the environment simulation assembly (400) comprises a water tank (410) and a sediment adding piece (420), a water inlet (411) and a water outlet (412) are formed in the side wall of the water tank (410), the water outlet (412) is communicated with the test tank (100), and the output end of the sediment adding piece (420) is communicated with the water tank (410) for adding sediment into the water tank (410).
  9. 9. The water wheel water guide mechanism bearing bush test platform (1) according to claim 8, wherein the environment simulation assembly (400) further comprises a ph adjusting member (430), and an output end of the ph adjusting member (430) is communicated with the water tank (410) and is used for conveying an acidic medium or an alkaline medium into the water tank (410).
  10. 10. The water wheel water guide mechanism bearing bush test platform (1) according to claim 8, further comprising a first water inlet and outlet pipe (130) and a second water inlet and outlet pipe (140) which are arranged on two sides of the test box (100), wherein the first water inlet and outlet pipe (130) is positioned above the second water inlet and outlet pipe (140), and a water outlet (412) of the water tank (410) is communicated with the first water inlet and outlet pipe (130) or the second water inlet and outlet pipe (140).
  11. 11. The water wheel water guide mechanism bearing bush test platform (1) according to claim 10, further comprising four drainage pipes (150), wherein the four drainage pipes (150) are respectively arranged at four inner walls of the test box (100), two ends of each drainage pipe (150) are closed, a plurality of nozzles (151) are installed at one side of each drainage pipe (150) facing the test assembly (200), the plurality of nozzles (151) are sequentially arranged along the length direction of the drainage pipe (150), and the first water inlet and outlet pipe (130) can be communicated with any drainage pipe (150) through four valves (160).
  12. 12. The water wheel water guide bearing bush test platform (1) according to claim 1, further comprising a hanger assembly (500) arranged at an inner wall of the test box (100), the hanger assembly (500) being for connecting a foreign matter.
  13. 13. The water wheel water guide mechanism bearing bush test platform (1) according to claim 12, wherein the hanging component (500) comprises a hanging box (510), a pressing plate (520) and a pressing screw (530), the hanging box (510) is opened towards one side of the test component (200) and is inwards recessed to form a meshing cavity (511), the pressing plate (520) is arranged in the meshing cavity (511) and is in sliding connection with the hanging box (510), the pressing screw (530) penetrates through a threaded hole (512) formed in the hanging box (510) and is in rotary connection with the pressing plate (520), and a meshing gap (513) is formed between the pressing plate (520) and the inner wall of the meshing cavity (511) of the hanging box (510).

Description

Bearing bush test platform of water wheel water guide mechanism Technical Field The invention belongs to the technical field of bearing bush testing, and particularly relates to a bearing bush testing platform of a water wheel water guide mechanism. Background The bearing bush in the water guide mechanism of the water turbine is used as a key friction pair component, and the performance of the bearing bush directly influences the running reliability and service life of the whole unit. Therefore, a test platform capable of simulating the actual working condition of the bearing bush is needed to realize accurate quantitative evaluation of friction, abrasion and lubrication performance of the bearing bush, so that the reliability of a bearing bush product is improved, the field failure risk of the bearing bush product is greatly reduced, and indispensable data support and technical guarantee are provided for long-period safe operation of large equipment. In actual working conditions, the bearing bush needs to bear the combined actions of heavy load, muddy water flow scouring and low-speed swinging motion, and the working environment is extremely harsh. However, no special test platform capable of integrating swinging motion simulation, heavy load application, water environment reproduction and multi-parameter real-time monitoring exists at present, so that a significant gap exists between experimental data and actual service performance. Therefore, a special test platform which can truly simulate the actual working condition of the water guide mechanism bearing bush of the water turbine and has an accurate measurement function is developed, and the test platform has important theoretical and practical significance for improving the performance of bearing bush products and promoting technical progress of industries. Disclosure of Invention The invention aims to solve the technical problem of providing a bearing bush test platform of a water wheel water guide mechanism, which can accurately simulate the actual complex movement mode of a guide vane of a water wheel. In order to solve the technical problems, the invention adopts the following technical scheme: 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, wherein the test assembly comprises two clamping plates, a bearing seat, a pushing piece and a bearing shaft, one clamping plate is in sliding connection with the test box along the direction away from the other clamping plate, the other clamping plate is fixedly connected with the test box, a clamping gap for clamping and fixing the bearing seat is formed between the two clamping plates, the pushing piece is installed on the test box, the output end of the pushing piece is connected with the slidable clamping plate and used for driving the clamping plate to slide, the bearing shaft is in rotary connection with the test box and penetrates through the bearing seat to be arranged, an installation gap for installing the bearing bush is formed between the bearing shaft and the bearing seat, the output end of the driving assembly is connected with the bearing shaft and used for driving the bearing shaft to act, and the discharge end of the environment simulation assembly is communicated with the test box and used for conveying water media into the test box. Further, the opposite sides of the two clamping plates are provided with inward concave arc grooves, the bearing seat comprises two arc bearings which are detachably connected, and one sides of the two arc bearings, which are opposite, are respectively clamped in the two arc grooves and fixedly connected with the corresponding clamping plates. Further, the pushing piece is a hydraulic cylinder, the hydraulic cylinder is arranged on the side wall of the test box, the output end of the hydraulic cylinder extends into the test box and is connected with a slidable clamping plate, a guide block is arranged on the inner wall of the test box, and the clamping plate is in sliding connection with the guide block. Further, the test box also comprises two bearing seats fixedly arranged in the test box, and two ends of the bearing shaft are respectively connected with the two bearing seats in a rotating way. Further, the test assembly further comprises a temperature sensor, the temperature sensor is arranged at a groove of the inner wall of the bearing seat, and the detection end of the temperature sensor is arranged right opposite to the bearing bush in the installation gap. Further, the test assembly further includes a two-dimensional force sensor mounted at a location between the slidable clamp plate and the bearing housing. Further, the driving assembly comprises a motor and a rotating shaft, and an output end of the motor is connected with the bearing shaft through the rotating shaft and is used for driving the bearing shaft to rotate at a constant speed, rot