A salt spray fatigue test device and method for elastic insulating material

Abstract

A salt spray fatigue test device and method for elastic insulating materials include a base, on which multiple groups of dynamic test devices and multiple groups of static test devices are installed, wherein the multiple groups of dynamic test devices are installed on a support frame of the base, a top equipment box is fixed on the top of the support frame, and a driving mechanism is installed in the top equipment box, and the driving mechanism drives the multiple groups of dynamic test devices to reciprocate. The salt spray fatigue test device and method for elastic insulating materials provided by the present invention can improve the accuracy of the test.

Description

Technical Field

[0001] The invention relates to salt spray test equipment, in particular to a salt spray fatigue test device and method for elastic insulating materials. Background Art

[0002] As a mechanical part that uses elasticity to work, elastic insulating materials have been widely used in mechanical equipment and instruments. When people use elastic insulating materials, they mainly use their reset function. However, after a period of use, the reset function of elastic insulating materials will gradually weaken, eventually leading to the failure of the elastic insulating materials; therefore, the reset ability of elastic insulating materials is a key factor that directly affects the service life of elastic insulating materials. For this reason, people often use elastic insulating material fatigue testing machines to test the reset function of elastic insulating materials, thereby testing the service life of elastic insulating materials and ensuring the normal use of elastic insulating materials.

[0003] However, it is well known that the elastic insulating materials in some mechanical devices are usually exposed to the air. The working environment contains corrosive components and factors such as oxygen, humidity, temperature changes and pollutants, which will cause certain corrosion to the elastic insulating materials, thereby affecting the structural strength of the elastic insulating materials themselves and the service life of the elastic insulating materials. For this reason, people often use salt spray testers to conduct salt spray tests on elastic insulating materials.

[0004] In the Chinese invention patent document with publication number CN111323213A, a salt spray fatigue test device for elastic insulating materials is disclosed. The device can support the elastic insulating material by providing a first circular block, a connecting block and a limiting rod, avoid the elastic insulating material from being skewed during fatigue, and ensure the normal operation of the experiment. By providing a second circular block, a pressure sensor on the first through hole, a fixed ring and a limiting ring, the two sides of the elastic insulating material can be fixed. By providing a first liquid pump, a liquid outlet pipe and a liquid spray nozzle at the bottom of the liquid spray pipe, the surface of the elastic insulating material can be sprayed with salt spray, and fatigue test and salt spray test can be carried out simultaneously, thereby improving work efficiency. By providing a motor and a limiting rod, the elastic insulating material in the test process can be rotated, and sufficient salt spray treatment can be achieved on the surface of the elastic insulating material. However, the device cannot achieve fatigue tests of various forms and different states of elastic insulating materials, and the test data is not rich enough and the accuracy is insufficient, which needs further improvement. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide a salt spray fatigue test device and method for elastic insulating materials, which can perform fatigue tests on elastic insulating materials in various forms and conditions and improve the accuracy of the tests.

[0006] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0007] A salt spray fatigue test device for elastic insulating materials comprises a base, on which multiple groups of dynamic test devices and multiple groups of static test devices are installed, wherein the multiple groups of dynamic test devices are installed on a support frame of the base, a top equipment box is fixed on the top of the support frame, a driving mechanism is installed in the top equipment box, and the driving mechanism drives the multiple groups of dynamic test devices to reciprocate.

[0008] The static test device includes a fixed screw, which is fixed on the base. The upper end of the fixed screw is sleeved and threadedly connected to a threaded sleeve, the top of the threaded sleeve is fixedly connected to a top pressure plate, a second mounting seat is fixedly connected to the base on one side of the fixed screw, and a static test elastic insulating material is fixedly connected between the second mounting seat and the top pressure plate.

[0009] The dynamic test device includes a first mounting seat, which is fixed on a support frame, the top of the first mounting seat is fixedly connected to a dynamic test elastic insulating material, the top of the dynamic test elastic insulating material is fixedly connected to a first pressure block, the top of the first pressure block is fixedly connected to a pressure rod, and the top of the pressure rod is fixedly connected to a second pressure block.

[0010] One side of the pressure rod is fixedly connected to the side rod, one end of the side rod away from the pressure rod is fixedly connected to the slide block, the inner wall of the top equipment box is fixedly connected to the guide rail, and the slide block is slidably connected to the guide rail.

[0011] The driving mechanism includes an annular fixing frame arranged inside the top equipment box, and a plurality of rotating shafts are distributed on the inner circumference of the annular fixing frame. One end of the rotating shaft is rotatably connected to the annular tube fixing frame, and the other end of the rotating shaft is coaxially fixedly connected to the rotating wheel. The side of the rotating wheel away from the rotating shaft is fixedly connected to a reducing cam, and the reducing cam is located above the second pressing block.

[0012] The top of the annular fixing frame is fixedly connected to the driving motor, the output shaft of the driving motor is fixedly connected to the driving gear, the outside of each rotating shaft is fixedly connected to the driven gear, a rotating ring is provided above the multiple driven gears, the top and bottom of the rotating ring are provided with meshing teeth, and the rotating ring is meshed with the driving gear and the driven gear.

[0013] The outer sleeve of the rotating ring is provided with a plurality of mounting sleeves, the mounting sleeves are fixedly connected to the annular fixing frame, and the mounting sleeves are slidably connected to the rotating ring.

[0014] A salt mist nozzle is fixedly provided at the top center of each of the first mounting seat and the second mounting seat. The salt mist nozzle is connected to a delivery pipe, and the delivery pipe is connected to an external salt mist supply source.

[0015] A salt spray fatigue test method for elastic insulating materials comprises the following steps:

[0016] Step 1: First, use a salt spray nozzle to regularly spray salt spray so that the dynamic test elastic insulating material and the static test elastic insulating material adhere to the salt spray;

[0017] Step 2: In the dynamic test, the driving motor is started, and the driving motor drives the driving gear to rotate, thereby rotating the rotating ring, driving the driven gear and the rotating shaft to rotate, so that the rotating wheel and the variable diameter cam rotate synchronously, and the variable diameter cam intermittently presses the second pressing block, so that the first pressing block intermittently reciprocates and rises and falls, and the elastic insulating material of the dynamic test is reciprocated. When the sizes of the multiple variable diameter cams are different, the compression amounts of the multiple dynamic test elastic insulating materials are different;

[0018] Step 3: In the static test, the nut sleeve is rotated to adjust the threaded sleeve up and down, thereby compressing or stretching multiple static test elastic insulating materials to different degrees, and realizing the test in a salt spray environment.

[0019] The present invention provides a salt spray fatigue test device and method for elastic insulating materials, which have the following technical effects: by setting up a dynamic test device and driving it with a driving mechanism, fatigue tests of elastic insulating materials under repeated compression and stretching in a salt spray environment can be realized. By driving the ring gear transmission mechanism with a driving motor, multiple groups of variable diameter cams can be driven to rotate. Since the diameters of each group of variable diameter cams are different, fatigue tests of elastic insulating materials under dynamic and different tensile strengths can be realized. By setting up a static test device, fatigue tests of elastic insulating materials under different tensile strengths under static conditions can be completed using threaded connections. In summary, the above-mentioned device can realize both dynamic fatigue tests with different tensile degrees and static fatigue tests with different tensile degrees, making the test methods diverse, the test results rich, and the accuracy high. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention will be further described below in conjunction with the accompanying drawings and embodiments:

[0021] Figure 1 It is a schematic diagram of the structure of the present invention.

[0022] Figure 2 It is a top view of the driving mechanism in the present invention.

[0023] Figure 3 It is the front view of the dynamic test device in the present invention.

[0024] In the figure: base 1, bottom bearing plate 2, fixed column 3, top fixed plate 4, top equipment box 5, first mounting seat 6, dynamic test elastic insulating material 7, fixed screw 8, threaded sleeve 9, nut sleeve 10, top pressure plate 11, static test elastic insulating material 12, second mounting seat 13, annular fixing frame 14, rotating shaft 15, rotating wheel 16, driven gear 17, reducing cam 18, driving motor 19, driving gear 20, rotating ring 21, mounting sleeve 22, first pressing block 23, pressing rod 24, second pressing block 25, guide rail 26, side rod 27, slider 28, conveying pipe 29, salt spray nozzle 30. DETAILED DESCRIPTION

[0025] like Figures 1 to 3 As shown, a salt spray fatigue test device for elastic insulating materials includes a base 1, the top center of the base 1 is fixedly connected to a bottom bearing plate 2, the top center of the bottom bearing plate 2 is fixedly connected to a fixing column 3, the top of the fixing column 3 is fixedly connected to a top fixing plate 4, the top of the top fixing plate 4 is fixedly connected to a top equipment box 5, a driving mechanism is arranged in the top equipment box 5, a plurality of groups of dynamic test devices are arranged on the bottom bearing plate 2, and a plurality of groups of static test devices are arranged on the base 1 outside the bottom bearing plate 2.

[0026] The static test device includes a fixed screw 8 fixedly arranged on the top of the base 1, a threaded sleeve 9 is sleeved outside the fixed screw 8 and threadedly connected, a nut sleeve 10 is fixedly connected outside the threaded sleeve 9, the top of the threaded sleeve 9 is fixedly connected to a top pressure plate 11, a second mounting seat 13 is fixedly connected to the base 1 on one side of the fixed screw 8, and a static test elastic insulating material 12 is fixedly connected between the second mounting seat 13 and the top pressure plate 11.

[0027] The dynamic test device includes a first mounting seat 6 fixedly arranged on the top of the bottom supporting plate 2, the top of the first mounting seat 6 is fixedly connected to the dynamic test elastic insulating material 7, the top of the dynamic test elastic insulating material 7 is fixedly connected to the first pressure block 23, the top of the first pressure block 23 is fixedly connected to the pressure rod 24, and the top of the pressure rod 24 is fixedly connected to the second pressure block 25.

[0028] The driving mechanism includes an annular fixing frame 14 fixedly arranged inside the top equipment box 5, and a plurality of rotating shafts 15 are distributed on the inner circumference of the annular fixing frame 14. One end of the rotating shaft 15 is rotatably connected to the annular tube fixing frame, and the other end of the rotating shaft 15 is coaxially fixedly connected to a rotating wheel 16. The side of the rotating wheel 16 away from the rotating shaft 15 is fixedly connected to a reducing cam 18, and the distal hub diameters of the plurality of reducing cams 18 are all different. The reducing cam 18 is located above the second pressing block 25.

[0029] The top of the annular fixing frame 14 is fixedly connected to the driving motor 19, the output shaft of the driving motor 19 is fixedly connected to the driving gear 20, the outside of each rotating shaft 15 is fixedly connected to the driven gear 17, a rotating ring 21 is provided above the plurality of driven gears 17, the top and bottom of the rotating ring 21 are provided with meshing teeth, and the rotating ring 21 is meshedly connected with the driving gear 20 and the driven gear 17.

[0030] The outer sleeve of the rotating ring 21 is provided with a plurality of mounting sleeves 22, which are fixedly connected to the annular fixing frame 14 and slidably connected to the rotating ring 21. The mounting sleeves 22 limit the upper and lower positions of the rotating ring 21 and limit the radial movement of the rotating ring 21. The rotating ring 21 only moves circumferentially around the axis of the annular fixing frame 14.

[0031] A salt mist nozzle 30 is fixedly disposed at the top center of each of the first mounting seat 6 and the second mounting seat 13 . The salt mist nozzle 30 is connected to a delivery pipe 29 , and the delivery pipe 29 is connected to an external salt mist supply source.

[0032] Preferably, one side of the pressure rod 24 is fixedly connected to a side rod 27 , one end of the side rod 27 away from the pressure rod 24 is fixedly connected to a slider 28 , the inner wall of the top equipment box 5 is fixedly connected to a guide rail 26 , and the slider 28 is slidably connected to the guide rail 26 .

[0033] Working principle: first, the salt spray nozzle 30 is used to spray salt spray regularly to make the dynamic test elastic insulating material 7 and the static test elastic insulating material 12 adhere to the salt spray; in the dynamic test, the drive motor 19 is started, and the drive motor 19 drives the drive gear 20 to rotate, thereby rotating the rotating ring 21, driving the driven gear 17 and the rotating shaft 15 to rotate, so that the rotating wheel 16 and the variable diameter cam 18 rotate synchronously, and the variable diameter cam 18 intermittently presses the second pressing block 25, so that the first pressing block 23 intermittently reciprocates and rises and falls, and the dynamic test elastic insulating material 7 is reciprocated and pressed. When the sizes of multiple variable diameter cams 18 are different, the compression amounts of multiple dynamic test elastic insulating materials 7 are different; in the static test, the nut sleeve 10 is rotated to make the threaded sleeve 9 rise and fall, so that the multiple static test elastic insulating materials 12 are compressed or stretched to different degrees, and the detection is realized in the salt spray environment.

Claims

1. A salt spray fatigue test device for elastic insulating materials, characterized by: The invention comprises a base (1), wherein a plurality of groups of dynamic test devices and a plurality of groups of static test devices are installed on the base (1), wherein the plurality of groups of dynamic test devices are installed on a support frame of the base (1), a top equipment box (5) is fixed on the top of the support frame, and a driving mechanism is installed in the top equipment box (5), and the driving mechanism drives the plurality of groups of dynamic test devices to reciprocate; The dynamic test device comprises a first mounting seat (6), the first mounting seat (6) is fixed on the support frame, the top end of the first mounting seat (6) is fixedly connected to the dynamic test elastic insulating material (7), the top end of the dynamic test elastic insulating material (7) is fixedly connected to the first pressing block (23), the top end of the first pressing block (23) is fixedly connected to the pressure rod (24), and the top end of the pressure rod (24) is fixedly connected to the second pressing block (25); One side of the pressure rod (24) is fixedly connected to the side rod (27), one end of the side rod (27) away from the pressure rod (24) is fixedly connected to the slider (28), the inner wall of the top equipment box (5) is fixedly connected to the guide rail (26), and the slider (28) is slidably connected to the guide rail (26); The driving mechanism comprises an annular fixing frame (14) arranged inside the top equipment box (5), a plurality of rotating shafts (15) are distributed on the inner circumference of the annular fixing frame (14), one end of the rotating shaft (15) is rotatably connected to the annular tube fixing frame, the other end of the rotating shaft (15) is coaxially fixedly connected to the rotating wheel (16), the side of the rotating wheel (16) away from the rotating shaft (15) is fixedly connected to the variable diameter cam (18), and the variable diameter cam (18) is located above the second pressing block (25); The top of the annular fixing frame (14) is fixedly connected to the driving motor (19), the output shaft of the driving motor (19) is fixedly connected to the driving gear (20), the outside of each rotating shaft (15) is fixedly connected to the driven gear (17), a rotating ring (21) is provided above the plurality of driven gears (17), the top and bottom of the rotating ring (21) are provided with meshing teeth, and the rotating ring (21) is meshedly connected to the driving gear (20) and the driven gear (17).

2. The salt spray fatigue testing device for elastic insulating materials according to claim 1, characterized in that: The static test device includes a fixed screw (8), the fixed screw (8) is fixed on the base (1), the upper end of the fixed screw (8) is sleeved and threadedly connected to a threaded sleeve (9), the top end of the threaded sleeve (9) is fixedly connected to a top pressure plate (11), a second mounting seat (13) is fixedly connected to the base (1) on one side of the fixed screw (8), and a static test elastic insulating material (12) is fixedly connected between the second mounting seat (13) and the top pressure plate (11).

3. The elastic insulating material salt spray fatigue testing device according to claim 1, characterized in that: The outer sleeve of the rotating ring (21) is provided with a plurality of mounting sleeves (22), the mounting sleeves (22) are fixedly connected to the annular fixing frame (14), and the mounting sleeves (22) are slidably connected to the rotating ring (21).

4. The elastic insulating material salt spray fatigue testing device according to claim 1, characterized in that: A salt mist nozzle (30) is fixedly provided at the center of the top of each of the first mounting seat (6) and the second mounting seat (13). The salt mist nozzle (30) is connected to a delivery pipe (29), and the delivery pipe (29) is connected to an external salt mist supply source.

5. A method for conducting a test using the elastic insulating material salt spray fatigue test device according to any one of claims 1 to 4, comprising the following steps: Step 1: First, regularly spray salt mist using a salt mist nozzle (30) to make the dynamic test elastic insulating material (7) and the static test elastic insulating material (12) adhere to the salt mist; Step 2: In the dynamic test, the driving motor (19) is started, and the driving motor (19) drives the driving gear (20) to rotate, thereby rotating the rotating ring (21), driving the driven gear (17) and the rotating shaft (15) to rotate, so that the rotating wheel (16) and the variable diameter cam (18) rotate synchronously, and the variable diameter cam (18) intermittently presses the second pressure block (25), thereby causing the first pressure block (23) to intermittently reciprocate and rise and fall, and reciprocatingly presses the dynamic test elastic insulating material (7). When the multiple variable diameter cams (18) are of different sizes, the compression amounts of the multiple dynamic test elastic insulating materials (7) are different; Step 3: In the static test, the nut sleeve (10) is rotated to adjust the threaded sleeve (9) to move up and down, thereby compressing or stretching the plurality of static test elastic insulating materials (12) to different degrees, and realizing the test in a salt spray environment.

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