Heavy steam fan blade strength wading test device

Abstract

The invention discloses a heavy steam fan blade strength wading test device, and belongs to the technical field of fan wading test devices. The device comprises a motor, a tested fan, a waterproof net rack, a wading tank and a lifting device, the motor provides rotation power. The tested fan is connected with an output shaft of the motor and is driven by the motor to rotate. The waterproof net rack covers the tested fan and is covered with waterproof cloth for preventing water from splashing; the wading groove is located below the tested fan and used for containing test water. The lifting device is connected with the wading groove and can drive the wading groove to ascend and descend so as to adjust the wading depth of the tested fan. The device can accurately simulate the actual wading condition of the blade, overcomes the defects of dry test, flexibly adapts to different ponding depth test requirements, guarantees test safety and data accuracy, is simple in structure and convenient to operate, provides reliable support for strength detection of the heavy steam fan blade, and is high in practicability and popularization value.

Description

Technical Field

[0001] This invention relates to the technical field of fan wading test devices, specifically a water wading test device for the strength of a Sinotruk fan blade. Background Technology

[0002] As a core component of the engine cooling system, Sinotruk fan blades often operate in complex wading scenarios such as rain and flooded roads. When the high-speed rotating blades come into contact with water, they are subjected to water resistance and impact, making them prone to deformation, breakage, and other failures. This not only affects engine cooling efficiency but may also cause vehicle malfunctions and endanger driving safety. Therefore, the strength performance of the blades under wading conditions is a key performance indicator in the design and production of Sinotruk fans.

[0003] Currently, existing fan blade strength tests mostly focus on room temperature dry conditions and lack targeted wading simulation devices. Some simple wading test equipment cannot flexibly adjust the wading depth, making it difficult to reproduce the real-world scenario of different water depths during heavy-duty truck operation, and thus cannot accurately reflect the strength and load-bearing capacity of the blades under actual wading conditions.

[0004] To address the aforementioned technical deficiencies, accurately test the strength performance of Sinotruk fan blades under wading conditions, and ensure the safety of vehicles wading through water, developing a testing device that can flexibly adjust the wading depth and effectively simulate real wading scenarios has become an urgent technical problem to be solved. Summary of the Invention

[0005] In view of the shortcomings in the prior art, the present invention provides a water-immersion test device for the strength of a Sinotruk fan blade.

[0006] The technical solution adopted in this invention is: a water-immersion test device for the strength of a heavy-duty steam turbine fan blade, comprising: An electric motor is used to provide rotational power; The fan under test is connected to the output shaft of the motor and is driven to rotate by the motor; A waterproof mesh frame is installed over the outside of the fan being tested. The waterproof mesh frame is covered with a waterproof cloth to prevent water splashing. A water trough, located below the fan under test, is used to hold the test water; A lifting device, connected to the wading tank, is used to drive the wading tank to rise and fall, so as to adjust the wading depth of the fan under test.

[0007] Furthermore, the lifting device includes a mounting base plate and an electric lifting platform fixed to the mounting base plate, and the wading tank is fixed to the electric lifting platform.

[0008] Furthermore, the waterproof mesh frame comprises a top surface and side surfaces located on both sides of the top surface, with the top surface and side surfaces arranged perpendicularly. The top and side surfaces both include an external frame and a metal protective mesh inside the frame; The frame is a rectangular structure, made of multiple steel bars welded together end to end. The metal protective mesh has diamond-shaped holes with a diameter of 8mm-15mm.

[0009] Furthermore, a mounting plate is welded to the bottom of the side, and mounting holes are provided on the mounting plate.

[0010] Furthermore, it also includes a motor base frame, on which a motor crossbeam is fixed, and a fixed long slot is provided on the motor crossbeam. The motor is fixedly connected to the fixed long slot on the motor crossbeam by bolts.

[0011] Furthermore, a trapezoidal support is fixed to one end of the motor base frame by bolts, a bearing seat is fixed on the trapezoidal support, and a drive shaft is rotatably connected to the bearing seat. One end of the drive shaft is connected to the output shaft of the motor through a pulley, and a flange for connecting to the fan under test is provided on the other end.

[0012] Furthermore, it also includes a stabilizing bracket, which includes a U-shaped frame, a fan frame, and a connecting piece. The two ends of the connecting piece are fixedly connected to the U-shaped frame and the fan frame, respectively. The two ends of the U-shaped frame have fixing plates that are adapted to the side walls of the trapezoidal support. The fixing plates are fixedly connected to the trapezoidal support. The fan under test is provided with a fan cover that matches the shape of the fan frame, and the fan cover and the fan frame are provided with matching mounting holes.

[0013] The beneficial effects of this invention are: First, it can accurately simulate the actual water immersion conditions of Sinotruk fan blades. By driving the tested fan to rotate through a motor, it can restore the real stress state of the blades when they come into contact with water at high speed. This can effectively detect the strength performance of the blades in water immersion scenarios, fill the gaps in existing dry-state testing, provide reliable test basis for blade strength assessment, and ensure the authenticity and accuracy of test data.

[0014] Second, by using the lifting device in conjunction with the wading tank, the lifting height of the wading tank can be flexibly adjusted, thereby accurately controlling the wading depth of the fan under test. It can adapt to the testing needs of different water depths, has a wide range of applications, and can comprehensively test the strength and load-bearing capacity of the blades in various wading scenarios.

[0015] Third, the combination design of the waterproof mesh frame and the waterproof cloth can effectively block water splashes during the test, avoid water splashes from interfering with the test accuracy and damaging the surrounding equipment, and ensure the safety and stability of the test process.

[0016] Fourth, the device has a simple overall structure and is easy to operate. It can carry out tests without complicated debugging, reducing the difficulty and cost of test operation. At the same time, it can accurately solve the technical defects of existing simple test equipment, providing strong support for the design optimization and quality inspection of Sinotruk fan blades, and indirectly improving the safety of vehicles driving through water. It has high practicality and promotion value.

[0017] In addition to the objectives, features, and advantages described above, the present invention has other objectives, features, and advantages. The invention will now be described in further detail with reference to the accompanying drawings. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the present invention.

[0019] Figure 2 A schematic diagram of the structure of the stabilizing support.

[0020] Figure 3 This is a structural diagram of a waterproof mesh frame.

[0021] Figure 4 A schematic diagram of the structure for stabilizing the support frame and the wind shield.

[0022] Figure 5 This is a schematic diagram of a trapezoidal support.

[0023] Figure 6 This is a schematic diagram of the lifting device.

[0024] Figure 1-6 Components: 1. Motor; 2. Fan under test; 3. Waterproof mesh frame; 4. Water wading tank; 5. Lifting device; 6. Mounting base plate; 7. Electric lifting platform; 8. Top surface; 9. Side surface; 10. Frame; 11. Metal protective mesh; 12. Mounting plate; 13. Mounting hole; 14. Motor base frame; 15. Motor crossbeam; 16. Fixed long slot; 17. Trapezoidal support; 18. Bearing seat; 19. Drive shaft; 20. Pulley; 21. Flange; 22. Stabilizing bracket; 23. "U" shaped frame; 24. Fan frame; 25. Connecting piece; 26. Fixing plate; 27. Fan cover; 28. Assembly hole. Detailed Implementation

[0025] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0026] It should be noted that if the embodiments of the present invention involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0027] This invention provides a water-immersion test device for the strength of Sinotruk fan blades.

[0028] In this embodiment, refer to Figure 1-6 The heavy-duty steam turbine fan blade strength immersion test device includes: Motor 1 is used to provide rotational power; The fan under test, 2, is connected to the output shaft of the motor and is driven to rotate by the motor. A waterproof mesh frame 3 is installed over the outside of the fan being tested. The waterproof mesh frame is covered with a waterproof cloth to prevent water splashing. Water tank 4, located below the fan under test, is used to hold test water; The lifting device 5 is connected to the wading tank and is used to drive the wading tank to lift and lower, so as to adjust the wading depth of the fan under test.

[0029] In this embodiment, a motor is used as a power source to drive the fan under test connected to its output shaft to rotate, simulating the actual working state of the fan; the wading tank is used to hold the test water, and the wading tank is driven to rise and fall by a lifting device to change the contact height between the fan under test and the water surface, thereby adjusting the wading depth; the waterproof mesh frame and the waterproof cloth of the outer cover form a protective structure, which is placed on the outside of the fan under test to block water splashes during the test.

[0030] It can accurately reproduce the actual water wading conditions of Sinotruk fan blades, realize flexible adjustment of water wading depth, and adapt to the testing needs of different water accumulation scenarios; effectively avoid water splashes interfering with test accuracy and damaging surrounding equipment, ensure test safety and stability, fill the gaps in existing dry state testing, provide a reliable basis for blade water wading strength assessment, and has a simple structure that fits actual testing needs.

[0031] Specifically, the lifting device includes a mounting base plate 6 and an electric lifting platform 7 fixed on the mounting base plate 6, and the wading tank is fixed on the electric lifting platform.

[0032] In this embodiment, the lifting device consists of a mounting base plate and an electric lifting platform. The electric lifting platform is fixed to the mounting base plate, and the wading tank is fixedly connected to the electric lifting platform. The lifting action of the electric lifting platform drives the wading tank to rise and fall synchronously, thereby adjusting the wading depth of the fan under test. This provides higher adjustment precision and more convenient operation, accurately matching the wading depth required for different tests, improving the accuracy of test data, and reducing the labor intensity of manual adjustment.

[0033] Specifically, the waterproof mesh frame comprises a top surface 8 and side surfaces 9 located on both sides of the top surface 8, with the top surface and side surfaces arranged perpendicularly. The top surface and the side surface both include an external frame 10 and a metal protective mesh 11 inside the frame 10; The frame is a rectangular structure, made of multiple steel bars welded together end to end. The metal protective mesh has diamond-shaped holes with a diameter of 8mm-15mm.

[0034] In this embodiment, the waterproof mesh frame consists of a top surface and two side surfaces, which are vertically arranged to form a semi-enclosed protective structure. Both the top and side surfaces adopt a "frame + metal protective mesh" structure. The frame is made of multiple steel bars welded into a rectangle, and the metal protective mesh uses diamond-shaped mesh openings (8mm-15mm in diameter), achieving protection without obstructing airflow and experimental observation. The vertically arranged top and side surfaces can fully cover the fan under test, preventing water splashes from different directions. The steel frame ensures the structural strength of the waterproof mesh frame, while the diamond-shaped mesh openings balance protection and permeability. The opening size design effectively blocks water splashes without affecting fan rotation and experimental observation, preventing water splashes from interfering with the test or damaging the equipment during testing.

[0035] Specifically, a mounting plate 12 is welded to the bottom of the side, and the mounting plate 12 is provided with mounting holes 13.

[0036] In this embodiment, a mounting plate is welded to the bottom side of the waterproof mesh frame. The mounting plate has mounting holes, through which the waterproof mesh frame can be bolted to the test bench or other fixed structures to achieve stable installation of the waterproof mesh frame.

[0037] Specifically, it also includes a motor base frame 14, on which a motor crossbeam 15 is fixed, and a fixed long slot 16 is provided on the motor crossbeam. The motor is fixedly connected to the fixed long slot on the motor crossbeam by bolts.

[0038] In this embodiment, a motor base frame is set as the mounting base for the motor, the motor crossbeam is fixed on the motor base frame, and the fixed long slot is reserved for adjustment. The motor is connected to the fixed long slot by bolts, and the installation level of the motor can be adjusted by adjusting the position of the bolts in the long slot.

[0039] Specifically, a trapezoidal support 17 is fixed to one end of the motor base frame by bolts, a bearing seat 18 is fixed on the trapezoidal support, and a transmission shaft 19 is rotatably connected to the bearing seat. One end of the transmission shaft 19 is connected to the output shaft of the motor through a pulley 20, and a flange 21 for connecting to the fan under test is provided on the other end.

[0040] In this embodiment, a trapezoidal support is fixed to one end of the machine base frame by bolts, a bearing seat is installed on the trapezoidal support, the drive shaft is rotatably connected to the bearing seat, the motor output shaft drives the drive shaft to rotate through a pulley, and the flange at the other end of the drive shaft is used to fix it to the fan under test to achieve stable power transmission.

[0041] Specifically, it also includes a stabilizing bracket 22, which includes a U-shaped frame 23, a fan frame 24, and a connecting piece 25. The two ends of the connecting piece are fixedly connected to the U-shaped frame and the fan frame, respectively. The two ends of the U-shaped frame have fixing plates 26 that are adapted to the side walls of the trapezoidal support. The fixing plates 26 are fixedly connected to the trapezoidal support. The fan under test is provided with a fan cover 27 that matches the shape of the fan frame, and the fan cover 27 and the fan frame are provided with matching mounting holes 28.

[0042] In this embodiment, the stabilizing bracket consists of a U-shaped frame, a fan frame, and a connecting piece. The U-shaped frame is fixed to the trapezoidal support by a fixing plate, and the connecting piece connects the U-shaped frame and the fan frame. The fan shroud of the fan under test is fixed to the fan frame through the assembly hole, forming an auxiliary fixation and limiting for the fan under test, ensuring the stability of the fan rotation trajectory, reducing test errors, and facilitating the installation and disassembly of the fan under test, thereby improving the efficiency of the test operation.

[0043] Please note to all technical personnel: Although the present invention has been described according to the specific embodiments above, the ideas of the present invention are not limited to this invention. Any modifications that utilize the ideas of the present invention will be included within the scope of protection of this patent.

Claims

1. A water-immersion test device for the strength of a heavy-duty steam turbine fan blade, characterized in that, include: An electric motor is used to provide rotational power; The fan under test is connected to the output shaft of the motor and is driven to rotate by the motor; A waterproof mesh frame is installed over the outside of the fan being tested. The waterproof mesh frame is covered with a waterproof cloth to prevent water splashing. A water trough, located below the fan under test, is used to hold the test water; A lifting device, connected to the wading tank, is used to drive the wading tank to rise and fall, so as to adjust the wading depth of the fan under test.

2. The water-immersion test device for the strength of Sinotruk fan blades according to claim 1, characterized in that: The lifting device includes a mounting base plate and an electric lifting platform fixed to the mounting base plate, and the wading tank is fixed to the electric lifting platform.

3. The water-immersion test device for the strength of Sinotruk fan blades according to claim 1, characterized in that: The waterproof mesh frame consists of a top surface and two side surfaces located on both sides of the top surface, with the top surface and side surfaces arranged perpendicularly. The top and side surfaces both include an external frame and a metal protective mesh inside the frame; The frame is a rectangular structure, made of multiple steel bars welded together end to end. The metal protective mesh has diamond-shaped holes with a diameter of 8mm-15mm.

4. The water-immersion test device for the strength of Sinotruk fan blades according to claim 3, characterized in that: A mounting plate is welded to the bottom of the side, and mounting holes are provided on the mounting plate.

5. The water-immersion test device for the strength of Sinotruk fan blades according to claim 1, characterized in that: It also includes a motor base frame, on which a motor crossbeam is fixed. The motor crossbeam has a fixed long slot, and the motor is fixedly connected to the fixed long slot on the motor crossbeam by bolts.

6. The water-immersion test device for the strength of Sinotruk fan blades according to claim 1, characterized in that: One end of the motor base frame is fixed with a trapezoidal support by bolts. A bearing seat is fixed on the trapezoidal support. A drive shaft is rotatably connected to the bearing seat. One end of the drive shaft is connected to the output shaft of the motor via a pulley, and the other end is provided with a flange for connecting to the fan under test.

7. The water-immersion test device for the strength of Sinotruk fan blades according to claim 6, characterized in that: It also includes a stabilizing bracket, which includes a "U"-shaped frame, a fan frame, and a connecting plate. The two ends of the connecting plate are fixedly connected to the "U"-shaped frame and the fan frame, respectively. The two ends of the "U"-shaped frame have fixing plates that are adapted to the side walls of the trapezoidal support. The fixing plates are fixedly connected to the trapezoidal support. The fan under test is provided with a fan cover that matches the shape of the fan frame, and the fan cover and the fan frame are provided with matching mounting holes.

Images