A salt spray aging test device and method capable of preloading

Abstract

A salt spray aging test device and method capable of preloading mainly include a shell, in which multiple groups of sample clamping and loading mechanisms are arranged, each group of sample clamping and loading mechanisms includes support plates on both sides of the front and rear, a guide rod is fixed between the two support plates, a sliding seat is provided on the guide rod for sliding forward and backward, a rotating plate is rotatably installed on each sliding seat, one end of the rotating plate is hinged to a pressure plate, and the lower end of the pressure plate is directly opposite to the support plate on the sliding seat; the other side of the rotating plate is connected to a pull rope, and the left and right pull ropes are connected to a suspension rod after passing through the guide wheel group on the support plate. The salt spray aging test device and method capable of preloading provided by the present invention enable the sample to obtain continuous and stable tension while being clamped, which is more in line with the actual use scenario.

Description

Technical Field

[0001] The invention relates to salt spray aging test equipment, in particular to a salt spray aging test device capable of preloading and a method thereof. Background Art

[0002] Salt spray test is an environmental test that mainly uses artificial simulated salt spray environment conditions created by salt spray test equipment to evaluate the corrosion resistance of products or metal materials. The salt spray test standard makes clear and specific provisions for salt spray test conditions, such as temperature, humidity, sodium chloride solution concentration and pH value, and also puts forward technical requirements for the performance of salt spray test chambers. The methods for determining the results of salt spray tests include: rating determination method, weighing determination method, corrosive product appearance determination method, and corrosion data statistical analysis method. Products that need to undergo salt spray tests are mainly metal products, and the corrosion resistance of the products is examined through testing.

[0003] Chinese patent (Announcement No.: CN209513554U) discloses a salt spray aging test chamber, including a device shell, a sealing door is movably installed on the front end face of the device shell, an observation transparent window is fixedly installed in the middle section of the front end face of the sealing door, a handle is fixedly installed on the right side of the sealing door, a rubber magnetic sheet is fixedly installed on the front end face of the device shell, and a heating plate 1, a heating plate 2 and a heating plate 3 are installed on the inner side of the device shell from top to bottom, and a first control button, a second control button and a third control button are fixedly installed on the left side of the outer side of the device shell from top to bottom. The device shell of the salt spray aging test chamber is magnetically connected to the sealing door, which is conducive to the close fit of the sealing door and the device shell, and prevents the sealing door from being forgotten to be closed, and the problem of toxic gas discharge causing environmental pollution. The heating of the heating plate 1, the heating plate 2 and the heating plate 3 in stages ensures the salt spray effect under different thermal conditions, which can effectively increase the functionality of the test chamber, but the device cannot apply a load to the sample, but the sample will bear the load in actual use, so the experimental device needs to be improved. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a salt spray aging test device and method capable of preloading, which can load the test at the same time, so that the test result is closer to the actual situation and the accuracy of the data is improved.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0006] A salt spray aging test device capable of preloading, comprising a shell, in which a plurality of groups of sample clamping and loading mechanisms are arranged, each group of sample clamping and loading mechanisms comprises support plates at front and rear sides, a guide rod is fixed between the two support plates, a sliding seat is provided on the guide rod for sliding back and forth, a rotating plate is rotatably mounted on each sliding seat, one end of the rotating plate is hinged to a pressure plate, and the lower end of the pressure plate is directly opposite to a support plate on the sliding seat; the other side of the rotating plate is connected to a pull rope, and the left and right pull ropes are connected to a suspension rod after passing through a guide wheel group on the support plate.

[0007] The shell comprises a bottom plate, the upper surface of which is provided with a protective cover, the front side of the protective cover is rotatably connected to a door plate, and both sides of the door plate are connected to side walls of the protective cover through hydraulic rods.

[0008] A filter box is provided at the rear side of the protective cover, a water pump is installed on the upper part of the filter box, the upper part of the water pump is connected to the lower part of the liquid guide tube, the upper part of the liquid guide tube is connected to the middle part of the liquid distribution tube, and a plurality of groups of nozzles are provided at the lower part of the liquid distribution tube, and each group of nozzles is directly opposite to the sample on the support plate.

[0009] A guide groove is arranged in the middle of the bottom plate, a liquid storage groove is arranged at the rear side of the guide groove, and the liquid storage groove is connected with the filter box.

[0010] A waterproof cover is arranged on the upper surface of the bottom plate. The waterproof cover is a conical structure and a through hole is arranged in the middle thereof for the suspension rod to pass through.

[0011] A tray is provided at the lower end of the suspension rod, and weights are placed on the upper part of the tray.

[0012] The guide wheel group includes a first guide wheel, a second guide wheel and a third guide wheel, wherein the third guide wheel is installed on the upper end of the support plate, the second guide wheel is installed on the side of the support plate away from the sample, and the first guide wheels are arranged in pairs up and down and installed in the clearance hole in the middle of the support plate.

[0013] A salt spray aging test method with preload, comprising the following steps:

[0014] Step 1: Hold the handle and pull the door panel to open the front side of the device;

[0015] Step 2: Move the sliding seat forward and backward so that the distance between the two sliding seats meets the requirements of the sample length, lift the pressing plate upward, separate the pressing plate from the supporting plate, place the front and rear ends of the sample between the pressing plate and the supporting plate respectively, release the pressing plate, and due to the weight of the pressing plate itself, the pressing plate is pressed on the supporting plate, so that the sample is initially fixed;

[0016] Step 3: Put weights of different weights on the tray. Due to the addition of the weights, the suspension rod moves downward, and the suspension rod pulls the lower end of the suspension rope downward, so that the upper end of the suspension rope pulls the fixed rod, and the fixed rod is pulled upward and away from the sample, so that the pressure plate moves downward to ensure the clamping force between the pressure plate and the support plate;

[0017] Step 4: When the rotating plate cannot rotate, the sliding seat slides away from the center of the device, thereby starting to apply tension to the sample, and the sample is now fixed;

[0018] Step 5. Close the door panel and turn on the water pump. The water pump draws the test brine in the filter box into the dispensing pipe. The dispensing pipe sprays the brine into the inside of the device through the nozzle. The brine achieves the effect of salt mist. After the brine falls on the bottom plate, it flows into the liquid storage tank along the guide groove and is reused after being filtered by the filter box.

[0019] The present invention provides a salt spray aging test device and method capable of preloading, which has the following technical effects:

[0020] 1) By combining the slider guide mechanism + lever structure + rope tensioning mechanism, the gravity of the suspension rod is converted into the tension between the two sliding seats, so that the specimen is continuously and stably subjected to tension during the test, which is more in line with the actual use scenario. At the same time, the specimen can be clamped by relying on the downward force provided by the other side of the lever during the rope tensioning process and the gravity of the pressure plate itself, so that the device can still provide stable clamping force even in a salt spray environment, ensuring the stability of the test.

[0021] 2) By setting up multiple groups of sample clamping and loading mechanisms, and each group of sample clamping and loading mechanisms can adjust the clamping force and tension of the sample by controlling the number of weights, it is also possible to test the comprehensive impact of the combination of load and salt spray on the sample in the actual process.

[0022] 3) By installing a guide trough and a liquid storage trough on the bottom plate, the liquid storage trough is connected to the filter box, so that the brine can be recycled. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The present invention will be further described below in conjunction with the accompanying drawings and embodiments:

[0024] Figure 1 It is a schematic diagram of the external structure of the present invention.

[0025] Figure 2 It is the right side view of the present invention.

[0026] Figure 3 It is a schematic diagram of the internal structure of the present invention.

[0027] Figure 4 It is a schematic diagram of the structure of the parts on the bottom plate of the present invention.

[0028] Figure 5 It is a schematic diagram of the structure of the components on the support plate in the present invention.

[0029] Figure 6 It is a schematic diagram of the structure of the parts on the sliding seat in the present invention.

[0030] Figure 7 It is a right side view of the parts on the sliding seat in the present invention.

[0031] In the figure: supporting leg 1, bottom plate 2, rotating seat 3, hydraulic rod 4, door panel 5, protective cover 6, handle 7, observation window 8, liquid dispensing tube 9, liquid guide tube 10, filter box 11, water pump 12, nozzle 13, guide groove 14, liquid storage groove 15, supporting plate 16, make way hole 17, first guide wheel 18, lifting rope 19, second guide wheel 20, third guide wheel 21, guide rod 22, lifting rod 23, waterproof cover 24, tray 25, weight 26, sliding seat 27, fixed rod 28, rotating shaft 29, rotating plate 30, pressing plate 31, supporting plate 32. DETAILED DESCRIPTION

[0032] like Figures 1 to 7 As shown, a salt spray aging test device capable of preloading includes a bottom plate 2, support legs 1 are provided on the left and right sides of the lower surface of the bottom plate 2, a protective cover 6 is provided on the upper surface of the bottom plate 2, the front side of the protective cover 6 is rotatably connected to the door panel 5, a rotating seat 3 is provided on the left and right sides of the protective cover 6, the front side of the rotating seat 3 is rotatably connected to the rear side of the hydraulic rod 4, and the piston rod of the hydraulic rod 4 is connected to the left or right side of the door panel 5. A handle 7 is provided at the lower part of the door panel 5, a filter box 11 is provided at the rear side of the protective cover 6, a water pump 12 is provided at the upper part of the filter box 11, the upper part of the water pump 12 is connected to the lower part of the liquid guide tube 10, the upper part of the liquid guide tube 10 is connected to the middle part of the liquid distribution tube 9, a nozzle 13 is provided at the lower part of the liquid distribution tube 9, a guide groove 14 is provided at the middle part of the bottom plate 2, a liquid storage groove 15 is provided at the rear side of the guide groove 14, and the liquid storage groove 15 is connected to the filter box 11.

[0033] The front and rear sides of the bottom plate 2 are provided with support plates 16, the upper part of the support plate 16 is provided with a guide rod 22, the front and rear sides of the guide rod 22 are slidably connected to a sliding seat 27, the upper part of the sliding seat 27 is provided with a rotating shaft 29, the left and right ends of the rotating shaft 29 are rotatably connected to the middle part of a rotating plate 30, the side of the rotating plate 30 close to the center of the device is rotatably connected to a pressing plate 31, a fixing rod 28 is provided on the side of the rotating plate 30 away from the center of the device, the middle part of the fixing rod 28 is fixedly connected to the upper end of a pull rope, the lower end of the pull rope is fixedly connected to the upper end of a suspension rod 23, a waterproof cover 24 is provided in the middle of the upper surface of the bottom plate 2, and the waterproof cover 2 4 is a conical structure, the middle part of the waterproof cover 24 passes through the middle part of the connecting rod 23, the lower end of the rod 23 is provided with a tray 25, the upper part of the tray 25 is provided with a weight 26, the side of the sliding seat 27 close to the center of the device is provided with a support plate 32, the upper end of the support plate 16 is provided with a third guide wheel 21, the side of the support plate 16 away from the center of the device is provided with a second guide wheel 20, the middle part of the support plate 16 is provided with a clearance hole 17, the upper and lower sides of the clearance hole 17 are provided with a first guide wheel 18, and the outside of the first guide wheel 18, the second guide wheel 20 and the third guide wheel 21 are provided with a pull rope.

[0034] Preferably, an observation window 8 is provided in the middle of the door panel 5. The observation window 8 is made of transparent glass, so that when the door panel 5 is closed and the salt spray aging test is performed, the operator can observe the test progress inside the device through the observation window 8 and calculate the test results in time.

[0035] Working principle and process: Hold the handle 7 and pull the door panel 5 to open the front side of the device. During the rotation of the door panel 5, the hydraulic rod 4 assists in applying force, making the opening and closing of the door panel 5 easier. At this time, move the sliding seat 27 forward and backward so that the distance between the two sliding seats 27 meets the requirement of the sample length, lift the pressing plate 31 upward, separate the pressing plate 31 from the supporting plate 32, place the front and rear ends of the sample between the pressing plate 31 and the supporting plate 32 respectively, release the pressing plate 31, due to the weight of the pressing plate 31 itself, the pressing plate 31 is pressed on the supporting plate 32, so that the sample is initially fixed, at this time, all three samples are clamped, and weights 26 of different weights are placed on the tray 25. Different weights can be used for comparative tests. Due to the addition of the weights 26, the suspension rod 23 moves downward, and the suspension rod 23 pulls the lower end of the hanging rope 19 to move downward, so that the upper end of the hanging rope 19 pulls the fixing rod 28, and the fixing rod 28 is pulled upward and away from the center of the device, so that the end of the rotating plate 30 away from the center of the device is lifted upward, thereby ensuring the clamping force between the pressure plate 31 and the support plate 32. When the rotating plate 30 cannot rotate, the sliding seat 27 slides in the direction away from the center of the device, thereby starting to apply tension to the sample. At this time, the sample is fixed, the door panel 5 is closed, and the water pump 12 is turned on. The water pump 12 draws the test salt water in the filter box 11 into the dispensing tube 9. The dispensing tube 9 sprays the salt water into the inside of the device through the nozzle 13. The salt water achieves the effect of salt mist. After the salt water falls on the bottom plate 2, it flows into the liquid storage tank 15 along the guide groove 14 and is reused after being filtered by the filter box 11.

[0036] The present invention is applicable to a salt spray aging test device and method capable of preloading a load. The hanging rope 19 is provided to convert the gravity of the hanging rod 23 into a pulling force between two sliding seats 27, so that the sample is continuously and stably subjected to the pulling force during the test, which is more in line with the actual use scenario. Moreover, the clamping of the sample only relies on the pulling force of the hanging rope 19 and the gravity of the pressing plate 31, so that the device can still stably provide the clamping force even in a salt spray environment, thereby ensuring the stable progress of the test.

Claims

1. A salt spray aging test device capable of preloading, characterized in that: The invention comprises a shell, wherein a plurality of groups of sample clamping and loading mechanisms are arranged in the shell, each group of sample clamping and loading mechanisms comprises support plates (16) at both sides, a guide rod (22) is fixed between the two support plates (16), a sliding seat (27) is provided on the guide rod (22) for sliding forward and backward movement, a rotating plate (30) is rotatably mounted on each sliding seat (27), one end of the rotating plate (30) is hinged to a pressing plate (31), and the lower end of the pressing plate (31) is directly opposite to a supporting plate (32) on the sliding seat (27); the other side of the rotating plate (30) is connected to a pull rope, and the left and right pull ropes are connected to the suspension rod (23) after passing through a guide wheel group on the support plate (16); The housing comprises a bottom plate (2), a protective cover (6) is provided on the upper surface of the bottom plate (2), the front side of the protective cover (6) is rotatably connected to the door plate (5), and both sides of the door plate (5) are connected to the side walls of the protective cover (6) via hydraulic rods (4); The upper surface of the bottom plate (2) is provided with a waterproof cover (24), the waterproof cover (24) is a conical structure and has a through hole in the middle for the suspension rod (23) to pass through; A tray (25) is provided at the lower end of the suspension rod (23), and a weight (26) is placed on the upper part of the tray (25); The guide wheel group comprises a first guide wheel (18), a second guide wheel (20) and a third guide wheel (21), wherein the third guide wheel (21) is mounted on the upper end of the support plate (16), the second guide wheel (20) is mounted on the side of the support plate (16) away from the sample, and the first guide wheels (18) are arranged in pairs up and down and mounted in a clearance hole (17) in the middle of the support plate (16).

2. The preloaded salt spray aging test device according to claim 1, characterized in that: A filter box (11) is provided at the rear side of the protective cover (6), a water pump (12) is installed on the upper part of the filter box (11), the upper part of the water pump (12) is connected to the lower part of the liquid guide tube (10), the upper part of the liquid guide tube (10) is connected to the middle part of the liquid distribution tube (9), and a plurality of groups of nozzles (13) are provided at the lower part of the liquid distribution tube (9), and each group of nozzles (13) is directly opposite to the sample on the support plate (32).

3. The preloaded salt spray aging test device according to claim 2, characterized in that: A guide groove (14) is provided in the middle of the bottom plate (2), a liquid storage groove (15) is provided at the rear side of the guide groove (14), and the liquid storage groove (15) is connected to the filter box (11).

4. A method for conducting a test using a preloaded salt spray aging test device according to any one of claims 1 to 3, comprising the following steps: Step 1: Hold the handle (7) and pull the door panel (5) to open the front side of the device; Step 2: Move the sliding seat (27) forward and backward so that the distance between the two sliding seats (27) meets the requirement of the length of the sample, lift the pressing plate (31) upward, separate the pressing plate (31) from the supporting plate (32), place the front and rear ends of the sample between the pressing plate (31) and the supporting plate (32), respectively, release the pressing plate (31), and due to the weight of the pressing plate (31) itself, the pressing plate (31) is pressed on the supporting plate (32), so that the sample is initially fixed; Step 3: Put weights (26) of different weights on the tray (25). Due to the addition of the weights (26), the suspension rod (23) moves downward, and the suspension rod (23) pulls the lower end of the suspension rope (19) to move downward, so that the upper end of the suspension rope (19) pulls the fixed rod (28), and the fixed rod (28) is pulled upward and away from the sample, so that the pressure plate (31) moves downward, ensuring the clamping force between the pressure plate (31) and the support plate (32); Step 4: When the rotating plate (30) cannot rotate, the sliding seat (27) slides in a direction away from the center of the device, thereby starting to apply a tensile force to the sample, and the sample is now fixed; Step 5: Close the door panel (5) and turn on the water pump (12). The water pump (12) draws the test salt water in the filter box (11) into the liquid separation pipe (9). The liquid separation pipe (9) sprays the salt water into the interior of the device through the nozzle (13). The salt water achieves the effect of salt mist. After the salt water falls on the bottom plate (2), it flows into the liquid storage tank (15) along the guide groove (14) and is reused after being filtered by the filter box (11).

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