CN218382036U

CN218382036U - Single-double dynamic fatigue test structure

Info

Publication number: CN218382036U
Application number: CN202222808060.9U
Authority: CN
Inventors: 钟敬财
Original assignee: Jinan Zhongchuang Industry Test Systems Co ltd
Current assignee: Jinan Zhongchuang Industry Test Systems Co ltd
Priority date: 2022-10-24
Filing date: 2022-10-24
Publication date: 2023-01-24
Anticipated expiration: 2032-10-24

Abstract

The utility model relates to the technical field of mechanical detection, in particular to a single-double acting fatigue test structure, which is convenient for detecting the fatigue performance of a metal plate in a high-temperature state, can detect the metal plate suitable for a spacecraft, is convenient to use and has low limitation; the detection box is fixedly arranged at the upper end of the bottom plate, a detection cavity is arranged in the detection box, and the upper end of the detection box is provided with an opening; the device comprises a detection box, and is characterized by further comprising a supporting block, two groups of supporting plates, two groups of lifting tables, two groups of heat insulation plates, two groups of flame heaters, three groups of clamping devices and two groups of vibrating devices, wherein the supporting block is fixedly arranged at the lower end of the detection box detection cavity, the two groups of vibrating devices are respectively arranged at the left side and the right side of the detection box detection cavity, the two groups of supporting plates are respectively arranged on the two groups of vibrating devices, and the two groups of vibrating devices are used for vibrating the two groups of supporting plates up and down.

Description

Single-double dynamic fatigue test structure

Technical Field

The utility model relates to a mechanical detection's technical field especially relates to a single double action fatigue test structure.

Background

The metal fatigue refers to that a material or a component gradually generates local permanent accumulated damage at one or more positions under the action of cyclic stress or cyclic strain, and cracks or complete fracture suddenly occur after a certain number of cycles. In order to ensure the reliability of the produced metal parts in the using process, samples need to be extracted for fatigue tests before the metal parts are delivered.

In the prior art, a metal fatigue test device with the patent application number of "CN202123015764.2" comprises a base, end plates are arranged at two ends of the base, opposite surfaces of two groups of the end plates are rotatably connected with rocking frames, a clamping roller is arranged between the two groups of the rocking frames, two groups of opposite fixing plates are arranged on the upper surface of the base, clamping plates are arranged on opposite sides of the fixing plates, a driving roller is further rotatably connected between the two groups of the end plates, and two ends of the driving roller are fixedly connected with a transmission gear and are meshed with the rocking frames through the transmission gear; when the metal plate fatigue tester is used, a metal plate to be tested is clamped and fixed by the clamping plates and the clamping rods, and then the metal plate to be tested is periodically bent up and down for fatigue testing.

It is found in the use, though it can carry out fatigue test to the metal sheet, when testing the metal sheet of application in aerospace equipment surface, because aerospace equipment can produce violent friction with the atmosphere when passing through the atmosphere at a high speed, and then can make its surperficial metal sheet produce very high temperature, in order to guarantee aerospace equipment's use reliability, so must require to apply metal sheet still can keep higher fatigue strength under the condition of high temperature on aerospace equipment, and above-mentioned device is inconvenient to detect the fatigue strength of metal sheet under the high temperature condition, so use inconvenient, the limitation is high.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides a make things convenient for and detect fatigue property of metal sheet under high temperature state, can detect the metal sheet that is applicable to on the spacecraft, convenient to use, the low single double acting fatigue test structure of limitation.

The utility model discloses a single-double acting fatigue test structure, which comprises a bottom plate and a detection box, wherein the detection box is fixedly arranged at the upper end of the bottom plate, a detection cavity is arranged inside the detection box, and the upper end of the detection box is an opening; the device comprises a detection box, and is characterized by also comprising a supporting block, two groups of supporting plates, two groups of lifting tables, two groups of heat insulation plates, two groups of flame heaters, three groups of clamping devices and two groups of vibrating devices, wherein the supporting block is fixedly arranged at the lower end of a detection cavity of the detection box; firstly, clamping and fixing a metal plate to be detected through three groups of clamping devices, then adjusting the heights of two groups of heat insulation plates through two groups of lifting tables, driving two groups of flame heaters to adjust the heights by the two groups of heat insulation plates, enabling the two groups of flame heaters to respectively heat the left part and the right part of the metal plate until the distance between the two groups of flame heaters and the lower end of the metal plate is a distance suitable for heating, then opening the two groups of vibration devices, driving the two groups of support plates to vibrate up and down by the two groups of support plates, enabling the left part and the right part of the metal plate to vibrate up and down by the two groups of support plates through the two groups of clamping devices on the left side and the right side, starting timing till the metal plate cracks or breaks suddenly, and deducing the fatigue performance of the metal plate according to the time when the metal plate breaks in a frequent vibration process; it has made things convenient for the fatigue property of detection metal sheet under the high temperature state through the heating of two sets of flame heater to the metal sheet, can detect the metal sheet that is applicable to on the spacecraft, high durability and convenient use, the limitation is low, and through setting up two sets of vibrating device, can make the two sides simultaneous occurrence vibrations of metal sheet, also can make the metal sheet only one side vibrate, make the metal sheet can select unilateral vibration or two sides simultaneous vibrations according to the needs of reality, can carry out the fatigue test of single double acting, high durability and convenient use.

Preferably, the clamping device comprises a supporting frame, a fixed roller, a bolt, a bearing, a lifting plate, sliding plates and a compression roller, wherein the fixed roller is fixedly arranged at the lower part of the supporting frame, the bolt is screwed with the upper part of the supporting frame, the bearing is rotatably arranged at the lower end of the bolt, the bearing is fixedly arranged at the upper end of the lifting plate, two groups of sliding plates are respectively and fixedly arranged at the front end and the rear end of the lifting plate, two groups of sliding plates are respectively and vertically slidably arranged on the supporting frame, the compression roller is fixedly arranged at the lower end of the lifting plate, the compression roller is positioned above the fixed roller, and three groups of supporting frames are respectively and fixedly arranged at the upper ends of the supporting block and the two groups of supporting plates; when the metal plate is clamped, the metal plate is positioned between the compression roller and the fixed roller, then the bolt is rotated, the rotating bolt enables the lifting plate to descend through the bearing to form the dynamic pressure roller, and the compression roller can compress and fix the metal plate on the fixed roller in the descending process; because the distance between compression roller and the fixed roll can be adjusted, so it can carry out the centre gripping to the metal sheet of different thickness and fix, and the limitation is low.

Preferably, the vibration device comprises a slide rail, two groups of springs, a fixed block, a roller, a supporting wheel, a rotating shaft, a supporting plate and a driving motor, the slide rail is fixedly arranged at the lower end of a detection cavity of the detection box, the right part of the supporting plate is vertically and slidably arranged on the slide rail, the lower ends of the two groups of springs are fixedly arranged at the lower end of the detection cavity of the detection box, the upper ends of the two groups of springs are fixedly arranged at the lower end of the supporting plate, the two groups of springs are in a stretching state, the fixed block is fixedly arranged at the lower end of the supporting plate, the roller is rotatably arranged at the lower part of the fixed block, the lower end of the roller is tightly propped against the upper end of the supporting wheel, the supporting wheel is fixedly arranged on the rotating shaft, the supporting wheel is eccentrically connected with the rotating shaft, the rotating shaft is rotatably arranged on the supporting plate, the input end of the rotating shaft is connected with the output end of the driving motor, and the driving motor and the supporting plate are fixedly arranged at the lower end of the detection cavity of the detection box; the driving motor is turned on, the driving motor drives the rotating shaft to rotate, the rotating shaft drives the supporting wheel to rotate, and the supporting wheel is eccentrically connected with the rotating shaft, so that the rotating supporting wheel enables the fixing block to drive the supporting plate to vibrate up and down through the roller wheel, and the supporting plate enables the fixing roller to drive the metal plate to bend up and down through the supporting frame; the support plate can vibrate up and down conveniently.

Preferably, the infrared thermometer also comprises a fixed frame, an electric sliding rail and a sliding block, wherein the fixed frame is fixedly arranged at the upper end of the bottom plate, the electric sliding rail is fixedly arranged on the fixed frame, the sliding block is arranged on the electric sliding rail, and the lower end of the sliding block is provided with the infrared thermometer; the infrared thermometer is opened to measure the temperature of the metal plate, the electric sliding rail is opened at the same time, the sliding block is moved in the left and right directions by the electric sliding rail, the sliding block drives the infrared thermometer to move left and right, the temperature of the left part and the right part of the metal plate can be detected, the monitoring of the temperature of the metal plate is facilitated, and the convenience is improved.

Preferably, the left part of the detection box is provided with a placing opening communicated with the detection cavity, the left part of the fixing frame is provided with a left and right communicated working opening, and the working opening and the placing opening are positioned at the same height; when the metal plate to be detected is clamped, the metal plate sequentially penetrates through the working port in the fixing frame and the placing port in the detection box, so that the metal plate is placed at the upper ends of the three groups of fixing rollers, and then the three groups of compression rollers descend to compress and fix the metal plate on the three groups of fixing rollers, and the metal plate is conveniently clamped and fixed.

Preferably, the surfaces of the press roller and the fixed roller are frosted surfaces; through the arrangement, the friction force between the metal plate and the compression roller and between the metal plate and the fixing roller is increased, the metal plate is prevented from sliding during fatigue detection, and the reliability is improved.

Preferably, the upper ends of the two groups of slide rails are provided with limit blocks; through the arrangement, the two groups of support plates are prevented from sliding on the two groups of slide rails in an overtravel way, and the reliability is improved.

Compared with the prior art, the beneficial effects of the utility model are that: the fatigue performance of the metal plate in a high-temperature state can be conveniently detected, the metal plate suitable for the spacecraft can be detected, the use is convenient, and the limitation is low.

Drawings

Fig. 1 is a schematic front view of the present invention;

FIG. 2 is a schematic structural view of a support frame, bolts, a press roll, and the like;

FIG. 3 is a schematic structural diagram of a slide rail, a spring, a driving motor and the like;

FIG. 4 is a schematic structural diagram of the fixing frame, the electric slide rail and the slide block;

in the drawings, the reference numbers: 1. a base plate; 2. a detection box; 3. a support block; 4. a support plate; 5. a lifting platform; 6. a heat insulation plate; 7. a fired heater; 8. a support frame; 9. a fixed roller; 10. a bolt; 11. a bearing; 12. a lifting plate; 13. a sliding plate; 14. a compression roller; 15. a slide rail; 16. a spring; 17. a fixed block; 18. a roller; 19. a support wheel; 20. a rotating shaft; 21. a support plate; 22. a drive motor; 23. a fixing frame; 24. an electric slide rail; 25. and a slider.

Detailed Description

In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. The present invention may be embodied in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

As shown in fig. 1 to 4, the utility model discloses a single double-action fatigue test structure includes bottom plate 1, detection case 2, supporting shoe 3, two sets of extension board 4, two sets of elevating platform 5, two sets of heat insulating boards 6, two sets of flame heater 7, fixed frame 23, three clamping device of group, two sets of vibrating device, electronic slide rail 24 and sliding block 25, detection case 2 fixed mounting is in bottom plate 1 upper end, the inside of detection case 2 is provided with detects the chamber, the upper end of detection case 2 is the opening, fixed frame 23 fixed mounting is in bottom plate 1 upper end, electronic slide rail 24 fixed mounting is on fixed frame 23, sliding block 25 installs on electronic slide rail 24, sliding block 25 lower extreme is provided with the infrared thermometer, 3 lower extremes that supporting shoe detected the chamber at detection case 2, two sets of vibrating device install the left and right sides that detects the chamber at detection case 2 respectively, two sets of extension boards 4 install respectively on two sets of vibrating device, two sets of vibrating device are used for vibrating from top to bottom two sets of extension boards 4, three clamping device of group install respectively in the upper end at supporting shoe 3 and two sets of extension board 4, two sets of supporting shoe 5 install respectively in the left and right sides in detection case 2 detection chamber, two sets of elevating platform 5 are installed respectively through two sets of flame heater 7 respectively.

As shown in fig. 2, the clamping device includes a supporting frame 8, a fixed roller 9, a bolt 10, a bearing 11, a lifting plate 12, sliding plates 13 and a pressing roller 14, the fixed roller 9 is fixedly installed at the lower part of the supporting frame 8, the bolt 10 is screwed with the upper part of the supporting frame 8, the bearing 11 is rotatably installed at the lower end of the bolt 10, the bearing 11 is fixedly installed at the upper end of the lifting plate 12, two sets of sliding plates 13 are respectively and fixedly installed at the front end and the rear end of the lifting plate 12, two sets of sliding plates 13 are both vertically and slidably installed on the supporting frame 8, the pressing roller 14 is fixedly installed at the lower end of the lifting plate 12, the pressing roller 14 is located above the fixed roller 9, and three sets of supporting frames 8 are respectively and fixedly installed at the upper ends of the supporting blocks 3 and the two sets of supporting plates 4.

As shown in fig. 3, the vibration device includes a slide rail 15, two sets of springs 16, a fixed block 17, a roller 18, a supporting wheel 19, a rotating shaft 20, a supporting plate 21 and a driving motor 22, the slide rail 15 is fixedly mounted at the lower end of a detection cavity of the detection box 2, the right part of the support plate 4 is vertically slidably mounted on the slide rail 15, the lower ends of the two sets of springs 16 are fixedly mounted at the lower end of the detection cavity of the detection box 2, the upper ends of the two sets of springs 16 are fixedly mounted at the lower end of the support plate 4, the two sets of springs 16 are in a stretching state, the fixed block 17 is fixedly mounted at the lower end of the support plate 4, the roller 18 is rotatably mounted at the lower part of the fixed block 17, the lower end of the roller 18 is tightly pressed against the upper end of the supporting wheel 19, the supporting wheel 19 is fixedly mounted on the rotating shaft 20, the rotating shaft 19 is eccentrically connected with the rotating shaft 20, the rotating shaft 20 is rotatably mounted on the supporting plate 21, the input end of the rotating shaft 20 is connected with the output end of the driving motor 22, and the driving motor 22 and the supporting plate 21 are fixedly mounted at the lower end of the detection cavity of the detection box 2.

The utility model discloses a single double action fatigue test structure, it is at work, at first, the metal sheet to be detected is fixed through three group's clamping device centre gripping, later adjust the height of two sets of heat insulating boards 6 through two sets of elevating platforms 5, two sets of heat insulating boards 6 drive two sets of flame heaters 7 height-adjusting, distance to between two sets of flame heaters 7 and the metal sheet lower extreme is the distance that is fit for heating, then open two sets of flame heaters 7, make two sets of flame heaters 7 heat the left and right sides two of metal sheet respectively, open electric slide rail 24 simultaneously, electric slide rail 24 makes sliding block 25 move in the left and right sides direction, sliding block 25 drives the infrared thermometer and moves about, detect the temperature of the left and right sides two of metal sheet, until the metal sheet risees to suitable temperature, then open two sets of vibrating device, two sets of vibrating device drive two sets of extension board 4 and vibrate from top to bottom, two sets of extension board 4 make the left and right sides two sets of metal sheet vibrate from top to bottom through two sets of clamping device of left and right sides, then begin timing, produce crackle or fracture to metal sheet suddenly, the fatigue performance of metal sheet can be inferred according to the time that the fracture takes place in frequent vibration process; it has made things convenient for the fatigue property of detection metal sheet under the high temperature state through the heating of two sets of flame heater 7 to the metal sheet, can detect the metal sheet that is applicable to on the spacecraft, high durability and convenient use, the limitation is low, and through setting up two sets of vibrating device, can make the two sides simultaneous occurrence vibrations of metal sheet, also can make the metal sheet only one side vibrate, make the metal sheet can select unilateral vibration or two sides simultaneous vibrations according to the needs of reality, can carry out the fatigue test of single double acting, high durability and convenient use.

When the vibrating device is used, the driving motor 22 is turned on, the driving motor 22 drives the rotating shaft 20 to rotate, the rotating shaft 20 drives the supporting wheel 19 to rotate, and the supporting wheel 19 and the rotating shaft 20 are in eccentric connection, so that the rotating supporting wheel 19 drives the supporting plate 4 to vibrate up and down through the fixed block 17 by virtue of the roller 18, and the supporting plate 4 drives the metal plate to bend up and down by virtue of the fixed roller 9 by virtue of the supporting frame 8; the support plate 4 can be vibrated up and down conveniently.

When the clamping device is used, firstly, the metal plate is positioned between the compression roller 14 and the fixed roller 9, then the bolt 10 is rotated, the rotating bolt 10 enables the lifting plate 12 to drive the compression roller 14 to descend through the bearing 11, and the compression roller 14 presses and fixes the metal plate on the fixed roller 9 in the descending process; since the distance between the pressing roller 14 and the fixing roller 9 can be adjusted, metal plates with different thicknesses can be clamped and fixed, and the limitation is low.

The single-double acting fatigue test structure of the utility model has common mechanical modes of installation, connection or arrangement, and can be implemented as long as the beneficial effects are achieved; the utility model discloses a single double action fatigue test structure's elevating platform 5, heat insulating board 6, flame heater 7, spring 16, gyro wheel 18, electronic slide rail 24 and infrared radiation thermoscope are purchase on the market, and this industry technical staff only need according to its subsidiary service instruction install and operate can, and need not the technical staff creative work in the field.

All technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. In the description of the present invention, unless expressly stated or limited otherwise, the terms "disposed," "mounted," "connected," and "fixed" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or may be connected through the use of two elements or the interaction of two elements. To those skilled in the art, the specific meanings of the above terms in the present invention are understood according to specific situations.

The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.

Claims

1. A single-double acting fatigue test structure comprises a bottom plate (1) and a detection box (2), wherein the detection box (2) is fixedly arranged at the upper end of the bottom plate (1), a detection cavity is arranged inside the detection box (2), and the upper end of the detection box (2) is provided with an opening; the device is characterized by further comprising a supporting block (3), two groups of supporting plates (4), two groups of lifting tables (5), two groups of heat insulation plates (6), two groups of flame heaters (7), three groups of clamping devices and two groups of vibrating devices, the supporting block (3) is fixedly arranged at the lower end of a detection cavity of the detection box (2), the two groups of vibrating devices are respectively arranged at the left side and the right side of the detection cavity of the detection box (2), the two groups of supporting plates (4) are respectively arranged on the two groups of vibrating devices, the two groups of vibrating devices are used for vibrating the two groups of supporting plates (4) up and down, the three groups of clamping devices are respectively arranged at the upper ends of the supporting block (3) and the two groups of supporting plates (4), the two groups of lifting tables (5) are respectively arranged at the left part and the right part of the detection cavity of the detection box (2), and the two groups of flame heaters (7) are respectively arranged at the upper ends of the two groups of lifting tables (5) through the two groups of heat insulation plates (6).

2. The single-double acting fatigue test structure as claimed in claim 1, wherein the clamping device comprises a support frame (8), a fixed roller (9), a bolt (10), a bearing (11), a lifting plate (12), sliding plates (13) and a press roller (14), the fixed roller (9) is fixedly installed at the lower part of the support frame (8), the bolt (10) is screwed with the upper part of the support frame (8), the bearing (11) is rotatably installed at the lower end of the bolt (10), the bearing (11) is fixedly installed at the upper end of the lifting plate (12), two groups of sliding plates (13) are respectively and fixedly installed at the front and rear ends of the lifting plate (12), two groups of sliding plates (13) are respectively and vertically and slidably installed on the support frame (8), the press roller (14) is fixedly installed at the lower end of the lifting plate (12), the press roller (14) is located above the fixed roller (9), and three groups of support frames (8) are respectively and fixedly installed at the upper ends of the support blocks (3) and the support plates (4).

3. The single-double action fatigue test structure as claimed in claim 1, wherein the vibration device comprises a slide rail (15), two sets of springs (16), a fixed block (17), a roller (18), a support wheel (19), a rotating shaft (20), a support plate (21) and a driving motor (22), the slide rail (15) is fixedly installed at the lower end of the detection cavity of the detection box (2), the right part of the support plate (4) is vertically slidably installed on the slide rail (15), the lower ends of the two sets of springs (16) are fixedly installed at the lower end of the detection cavity of the detection box (2), the upper ends of the two sets of springs (16) are fixedly installed at the lower end of the support plate (4), the two sets of springs (16) are in a stretching state, the fixed block (17) is fixedly installed at the lower end of the support plate (4), the roller (18) is rotatably installed at the lower part of the fixed block (17), the lower end of the roller (18) is tightly pressed against the upper end of the support wheel (19), the support wheel (19) is fixedly installed on the rotating shaft (20), the support wheel (19) is eccentrically connected with the rotating shaft (20), the support plate (21) is rotatably installed at the support plate (21), the input end of the support plate (22) is connected with the input end of the detection cavity of the driving motor (22), and the detection box (22).

4. The single-double action fatigue test structure of claim 1, further comprising a fixing frame (23), an electric slide rail (24) and a sliding block (25), wherein the fixing frame (23) is fixedly installed at the upper end of the bottom plate (1), the electric slide rail (24) is fixedly installed on the fixing frame (23), the sliding block (25) is installed on the electric slide rail (24), and the lower end of the sliding block (25) is provided with an infrared thermometer.

5. The single-double acting fatigue test structure of claim 4, wherein the left part of the detection box (2) is provided with a placing port communicated with the detection cavity, the left part of the fixed frame (23) is provided with a left and a right communicating working ports, and the working ports and the placing port are positioned at the same height.

6. A single and double dynamic fatigue test structure as claimed in claim 2, wherein the surfaces of said press roll (14) and said fixed roll (9) are frosted.

7. A single and double acting fatigue test structure as claimed in claim 3, wherein the upper end of the slide rail (15) is provided with a limiting block.