Metal blade fatigue testing device

Abstract

The utility model discloses a metal blade fatigue testing device, and relates to the field of fatigue testing devices. The metal blade fatigue testing device comprises a testing platform and a metal support installed at the top end of the testing platform, a testing assembly is arranged at the top end of the testing platform, and a display screen is arranged on the front side wall of the testing platform. According to the fatigue testing device for the metal blade, pressure can be applied to the top end of the metal support through the radial testing unit arranged at the top end of the metal support, and radial pressure testing is performed on the two sides of the metal support, so that axial ring diameters on the two sides of the metal support are clamped and pressure is applied; according to the testing device, the limiting seat can drive the metal support to rotate, the axial testing unit can comprehensively clamp and detect the metal support so as to judge whether the strength of the metal support meets the subsequent use standard or not, the testing effect on the metal support can be improved by adopting a radial and axial combined testing mode, and the testing efficiency is improved. Therefore, the accuracy of the test result of the metal support can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of testing devices, in particular to a fatigue testing device for metal blades. Background Art

[0002] Metal supports are used to drive the wind blades to rotate in wind power generation, and thus can convert the kinetic energy of the wind into electrical energy through the rotation of the wind blades. Metal supports play an important role in wind metal blades. In order to ensure the normal use of wind metal blades, it is necessary to conduct regular fatigue tests, that is, strength tests, on metal supports that have been used for a long time, so as to ensure whether the strength of the metal supports meets the working requirements.

[0003] Currently, when detecting the strength of metal supports, the method of applying pressure is usually used for testing. The metal support is placed on the top of the detection platform, and the pressure plate is driven to move down by the cylinder at the top, so that the pressure plate applies pressure to the top of the metal support to realize the strength test of the metal support. Applying pressure only tests the radial pressure of the metal support, making it difficult to conduct a good strength test on the axial pressure of the metal support. The function is single, which reduces the accuracy of the strength test of the metal support. In view of the deficiencies of the prior art, we propose a fatigue testing device for metal blades to solve the above problems. Content of the Utility Model

[0004] To achieve the above purposes, the utility model is realized through the following technical solutions: A fatigue testing device for metal blades, including a testing platform and a metal support installed on the top of the testing platform. A testing component is arranged on the top of the testing platform, and a display screen is arranged on the front side wall of the testing platform. The testing component is composed of a radial testing unit and an axial testing unit. The radial testing unit includes a radial testing plate located at the top of the metal support, and the radial testing plate tests the radial pressure of the metal bearing. The axial testing unit includes axial testing groups located on both sides of the metal support. The axial testing groups are composed of a left testing plate and a right testing plate. Arc-shaped parts are arranged on the outer walls of the opposite surfaces of the left testing plate and the right testing plate.

[0005] A driving unit is arranged inside the testing platform. By the operation of the driving unit, the axial testing groups on both sides are driven to slide, and the left testing plate and the right testing plate on both sides are driven to approach each other, so that the arc-shaped parts clamp the ring diameter on both sides of the metal support. A limiting seat is rotatably connected to the top of the testing platform, the bottom end of the metal support is inserted into the inside of the limiting seat, and a driving component is arranged on one side of the limiting seat to drive the limiting seat to rotate.

[0006] Preferably, the driving unit includes a driving rod rotatably connected to the inner top of the test platform. Anti-threads and positive threads are provided on the outer peripheral walls on both sides of the driving rod, and the anti-threads and positive threads are arranged at intervals.

[0007] Preferably, a first driving block and a second driving block are slidably connected to the outer peripheral walls on both sides of the driving rod, and the positions of the first driving block and the second driving block correspond to the positions of the anti-threads and positive threads.

[0008] Preferably, the top end of the first driving block is connected to the left test plate, and the top end of the second driving block is connected to the right test plate. The first driving block and the left test plate, and the second driving block and the right test plate are fixed through the provided connecting plates.

[0009] Preferably, a second motor is provided on the outer wall of one side of the test platform, and the output end of the second motor is fixedly connected to one end of the driving rod.

[0010] Preferably, the driving assembly includes a mounting frame fixedly installed on one side of the top of the test platform. A first motor is provided on the top of the mounting frame, and the output end of the first motor is fixedly connected to a driving gear, and the driving gear is rotatably connected inside the mounting frame.

[0011] Preferably, a transmission gear is fixedly sleeved on the outer peripheral wall of the limit seat, the transmission gear meshes with the driving gear, and an electromagnet is installed at the inner bottom of the limit seat.

[0012] Preferably, a top plate is fixedly connected to the top of the test platform, and a cylinder is installed on the top of the top plate. The output end of the cylinder is fixedly connected to the top of the radial test plate.

[0013] The present invention discloses a fatigue test device for metal blades, and its beneficial effects are as follows: For this fatigue test device for metal blades, the radial test unit provided at the top of the metal support can apply pressure to the top of the metal support, so as to test the radial pressure strength of the metal support. The radial pressure tests provided on both sides of the metal support can make the driving rod at the bottom drive the axial test groups on both sides to slide, so as to drive the left test plate and the right test plate on both sides to approach each other at the same time, clamp and apply pressure to the axial ring diameters on both sides of the metal support. At the same time, with the cooperation of the driving gear and the transmission gear, the limit seat can drive the metal support to rotate, enabling the axial test unit to comprehensively clamp and detect the metal support, so as to judge whether the strength of the metal support meets the subsequent use standards. By adopting a combined test method of radial and axial directions, the test effect on the metal support can be improved, and further the accuracy of the test result of the metal support can be improved. Description of the Drawings

[0014] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0015] Figure 1 Schematic diagram of the overall structure of the present invention;

[0016] Figure 2 Schematic diagram of the structure of the radial test unit of the present invention;

[0017] Figure 3 Schematic diagram of the connection structure between the metal support and the axial test unit of the present invention;

[0018] Figure 4 Schematic diagram of the explosion structure of the metal support and the limit seat of the present invention;

[0019] Figure 5 Schematic diagram of the connection structure between the drive rod and the axial test unit of the present invention.

[0020] In the figure: 1. Test platform; 101. Top plate; 102. Display screen; 2. Limit seat; 201. Driving gear; 202. Transmission gear; 203. Electromagnet; 204. Installation frame; 205. First motor; 3. Metal support; 4. Radial test unit; 401. Radial test plate; 402. Cylinder; 5. Axial test unit; 501. Left test plate; 502. Right test plate; 503. Drive rod; 504. Reverse thread; 505. Positive thread; 506. First drive block; 5061. Second drive block; 507. Connecting plate; 508. Second motor. Specific implementation manners

[0021] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0022] To better understand the above technical solutions, the following will explain the above technical solutions in detail in combination with the specification drawings and specific implementation manners.

[0023] The embodiments of the present invention disclose a metal blade fatigue test device.

[0024] According to the appendixFigures 1-5 As shown in the figure, it includes a test platform 1 and a metal support 3 installed at the top of the test platform 1. A test component is provided at the top of the test platform 1, and a display screen 102 is provided on the front side wall of the test platform 1. The test component is composed of a radial test unit 4 and an axial test unit 5. The radial test unit 4 includes a radial test plate 401 located at the top of the metal support 3, and the radial test plate 401 tests the radial pressure of the metal bearing. The axial test unit 5 includes axial test groups located on both sides of the metal support 3, and the axial test groups are composed of a left test plate 501 and a right test plate 502. Arc-shaped portions are provided on the outer walls of the opposite surfaces of the left test plate 501 and the right test plate 502. When testing the fatigue of the metal support 3, first place the metal support 3 inside the limit seat 2, and fix the installed metal support 3 through the internal electromagnet 203. Subsequently, test the radial pressure of the metal support 3 through the radial test unit 4 at the top. Subsequently, perform the work of testing the axial pressure of the metal support 3 through the axial test units 5 on both sides, and display the test pressure results through the display screen 102 on one side, so as to be able to judge whether the fatigue degree of the metal support 3 meets the subsequent use requirements.

[0025] A driving unit is provided inside the test platform 1. Through the operation of the driving unit, it drives the axial test groups on both sides to slide, drives the left test plates 501 and the right test plates 502 on both sides to approach each other, and makes the arc-shaped portions clamp the ring diameter on both sides of the metal support 3. The top of the test platform 1 is rotatably connected to a limit seat 2, the bottom end of the metal support 3 is inserted into the inside of the limit seat 2, and a driving component is provided on one side of the limit seat 2. The driving component drives the limit seat 2 to rotate. By starting the cylinder 402 at the top, it drives the radial test plate 401 at the bottom to move downward, applying pressure to the top of the metal support 3, so as to determine whether the radial pressure of the metal support 3 meets the standard.

[0026] The driving unit includes a driving rod 503 rotatably connected to the inner top of the test platform 1. Reverse threads 504 and positive threads 505 are provided on the outer peripheral walls on both sides of the driving rod 503, and the reverse threads 504 and the positive threads 505 are arranged at intervals. First driving blocks 506 and second driving blocks 5061 are slidably connected to the outer peripheral walls on both sides of the driving rod 503. The positions of the first driving blocks 506 and the second driving blocks 5061 correspond to the positions of the reverse threads 504 and the positive threads 505. When testing the axial strength of the metal support 3, by starting the second motor 508 on one side, the driving rod 503 rotates inside the test platform 1, and then the first driving blocks 506 and the second driving blocks 5061 at the reverse threads 504 and the positive threads 505 on both sides can approach each other, and can simultaneously drive the left test plates 501 and the right test plates 502 on both sides to approach each other, clamping and applying pressure to the ring diameter on both sides of the metal support 3, so as to be able to perform the operation of testing the axial pressure of the metal support 3.

[0027] The top end of the first driving block 506 is connected to the left test board 501, and the top end of the second driving block 5061 is connected to the right test board 502. Both between the first driving block 506 and the left test board 501, and between the second driving block 5061 and the right test board 502 are fixed through the provided connecting board 507. On one outer wall of the test platform 1, a second motor 508 is provided, and the output end of the second motor 508 is fixedly connected to one end of the driving rod 503. It should be noted that after the two axial test groups clamp and test the two circumferential diameters of the metal support 3 on both sides, the driving rod 503 rotates in the reverse direction, causing the two axial test groups to move away from each other, and no longer enabling the left test board 501 and the right test board 502 to clamp the metal support 3. Subsequently, by starting the first motor 205 on one side, the driving gear 201 inside rotates. Through the mutual meshing of the driving gear 201 and the transmission gear 202, the limiting seat 2 drives the internally fixed metal support 3 to rotate between the axial test groups, so that the untested circumferential diameter of the metal support 3 is located between the left test board 501 and the right test board 502 for testing operations, thereby achieving the purpose of comprehensively testing the pressure strength of the axial circumferential diameter of the metal support 3.

[0028] The driving assembly includes a mounting frame 204 fixedly installed on one side of the top end of the test platform 1. At the top end of the mounting frame 204, a first motor 205 is provided, and the output end of the first motor 205 is fixedly connected to a driving gear 201, and the driving gear 201 is rotatably connected inside the mounting frame 204.

[0029] The outer peripheral wall of the limiting seat 2 is fixedly sleeved with a transmission gear 202, and the transmission gear 202 meshes with the driving gear 201. An electromagnet 203 is installed at the inner bottom of the limiting seat 2. The top end of the test platform 1 is fixedly connected to a top plate 101, and a cylinder 402 is installed at the top end of the top plate 101, and the output end of the cylinder 402 is fixedly connected to the top of the radial test board 401.

[0030] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art of this industry should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A metal blade fatigue testing device, comprising a testing platform (1) and a metal support (3) mounted on the top of the testing platform (1), wherein a testing assembly is arranged on the top of the testing platform (1), and a display screen (102) is arranged on the front side wall of the testing platform (1), characterized in that: The test assembly is composed of a radial test unit (4) and an axial test unit (5); the radial test unit (4) comprises a radial test plate (401) located at the top of the metal support (3); the radial test plate (401) tests the radial pressure of the metal bearing; the axial test unit (5) comprises an axial test group located at both sides of the metal support (3); the axial test group comprises a left test plate (501) and a right test plate (502); arc-shaped portions are provided on the outer walls of the opposite surfaces of the left test plate (501) and the right test plate (502); The test platform (1) is provided with a driving unit inside. The driving unit is operated to drive the axial test groups on both sides to slide and drive the left test plate (501) and the right test plate (502) on both sides to approach each other so that the arc-shaped portion clamps the ring diameters on both sides of the metal support (3). The top end of the test platform (1) is rotatably connected to the limit seat (2), and the bottom end of the metal support (3) is inserted into the inside of the limit seat (2). A driving component is provided on one side of the limit seat (2), and the driving component drives the limit seat (2) to rotate.

2. A metal blade fatigue testing device according to claim 1, characterized in that: The driving unit comprises a driving rod (503) rotatably connected to the top of the test platform (1), and the outer peripheral walls on both sides of the driving rod (503) are provided with reverse threads (504) and positive threads (505), and the reverse threads (504) and positive threads (505) are arranged at intervals.

3. A metal blade fatigue testing device according to claim 2, characterized in that: The outer peripheral walls on both sides of the driving rod (503) are slidably connected to a first driving block (506) and a second driving block (5061), and the positions of the first driving block (506) and the second driving block (5061) correspond to the positions of the reverse thread (504) and the positive thread (505).

4. A metal blade fatigue testing device according to claim 3, characterized in that: The top end of the first driving block (506) is connected to the left test board (501), and the top end of the second driving block (5061) is connected to the right test board (502); the first driving block (506) and the left test board (501), and the second driving block (5061) and the right test board (502) are fixed via a connecting plate (507).

5. A metal blade fatigue testing device according to claim 4, characterized in that: A second motor (508) is provided on an outer wall of one side of the test platform (1), and an output end of the second motor (508) is fixedly connected to one end of the driving rod (503).

6. A metal blade fatigue testing device according to claim 5, characterized in that: The driving assembly comprises a mounting frame (204) fixedly mounted on one side of the top end of the test platform (1); a first motor (205) is arranged at the top end of the mounting frame (204); an output end of the first motor (205) is fixedly connected to a driving gear (201); and the driving gear (201) is rotatably connected to the inside of the mounting frame (204).

7. A metal blade fatigue testing device according to claim 1, characterized in that: A transmission gear (202) is fixedly sleeved on the outer peripheral wall of the limit seat (2), the transmission gear (202) and the driving gear (201) are meshed with each other, and an electromagnet (203) is installed on the inner bottom of the limit seat (2).

8. A metal blade fatigue testing device according to claim 7, characterized in that: The top of the test platform (1) is fixedly connected to a top plate (101), the top of the top plate (101) is equipped with a cylinder (402), and the output end of the cylinder (402) is fixedly connected to the top of the radial test plate (401).

Images