Environmental box for testing high and low temperature mechanical properties of material

Abstract

The utility model relates to the technical field of high and low temperature testing environment boxes, in particular to a material high and low temperature mechanical property testing environment box which comprises a sealing box door hinged to the high and low temperature testing environment box, and a testing mechanism is arranged in the high and low temperature testing environment box. Through cooperation of the rotating lead screw and the threaded sliding table, the U-shaped frame is pulled to move outwards, so that a plate is pulled to be stretched outwards until the plate is broken, the ultimate stretching value of the plate is measured, the plate clamped in the U-shaped frame is driven by the driving motor to be bent until the plate is distorted, and the distortion value of the plate is measured. Laser emitted by the laser generator irradiates the laser receiving plate until the laser emitted by the laser generator moving downwards is partially shielded by the expanded plate and cannot irradiate the laser receiving plate, the expansion height of the plate at the moment is recorded and compared with the initial thickness, and the expansion deformation degree of the plate after thermal expansion and cold contraction can be measured.

Description

Technical Field

[0001] This utility model relates to the technical field of high and low temperature testing environment chambers, and in particular to a high and low temperature mechanical property testing environment chamber for materials. Background Technology

[0002] High and low temperature test chambers, also known as high and low temperature test chambers, simulate the temperature changes in the atmospheric environment and are suitable for reliability testing of industrial products under high and low temperature conditions. They are used to test the performance indicators of components and materials in electronic and electrical products, automobiles, motorcycles, aerospace, shipbuilding, weaponry, universities, and research institutions under high and low temperature (alternating) cyclic conditions.

[0003] Aerospace and military equipment often operate in extreme environments such as high and low temperatures. Therefore, high and low temperature test chambers are needed to test the mechanical properties of materials such as plates used in aerospace and military equipment under high and low temperature changes.

[0004] Existing high and low temperature test chambers typically place sheet metal samples inside the chamber and heat or cool them according to the standard-specified temperature and time, conducting multiple cyclic tests to observe and measure the performance changes of the steel under high and low temperature environments, including color, gloss, oxidation degree, and whether cracks or peeling occur, thereby assessing whether the steel's high and low temperature resistance meets the standard requirements. However, due to the special operating environment of aerospace equipment, when conducting high and low temperature tests, it is also necessary to simultaneously test the sheet metal's tensile strength, torsion test, and the degree of expansion and deformation under thermal expansion and contraction conditions. Therefore, traditional high and low temperature test chambers have certain limitations. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a high and low temperature mechanical property testing environment chamber for materials. It solves the problem that existing technologies only test the high and low temperature resistance of materials, resulting in a single test item. However, due to the special operating environment of aerospace equipment, it is also necessary to simultaneously test the tensile strength, torsion test, and expansion and deformation degree of the material under thermal expansion and contraction conditions when conducting high and low temperature tests. This invention achieves the goal of performing multiple tests on materials with the same equipment, thereby improving testing efficiency.

[0006] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a high and low temperature mechanical property testing environment chamber for materials, including a sealed door hinged to the high and low temperature testing environment chamber, and a testing mechanism for testing the mechanical properties of materials under high and low temperature changes is provided inside the high and low temperature testing environment chamber.

[0007] The testing mechanism includes a platform installed inside a high and low temperature testing environment chamber. A bidirectional motor is installed at the center of the platform, and lead screws are connected to the output ends of the bidirectional motor on both sides. Guide grooves are provided on both the left and right sides of the upper surface of the platform. A threaded slide is threadedly connected to the lead screw and slides sliding left and right inside the guide grooves. A U-shaped frame is installed on the top of the threaded slide. A hydraulic cylinder is installed on the top of the U-shaped frame, and the output end of the hydraulic cylinder passes through the U-shaped frame. A pressure plate is installed at the bottom of the hydraulic cylinder. A torsion component for performing torsion tests on the material is installed on the U-shaped frame. A laser detection component for detecting the degree of expansion and deformation of the material under thermal expansion and contraction is provided on the U-shaped frame.

[0008] Preferably, the front and rear sides of the U-shaped frame on the right side are symmetrically provided with through holes and slots, the inner wall of the U-shaped frame is engraved with a scale, and the bottom of the pressure plate is provided with anti-slip teeth.

[0009] Preferably, the twisting component includes a rotating shaft mounted on the right-side U-shaped frame, and the rotating shaft is rotatably connected to the interior of a rotating hole opened on the right-side threaded slide, with the right end of the rotating shaft connected to the output end of the drive motor.

[0010] Preferably, the laser detection assembly includes an electric push rod mounted on the right side of the U-shaped frame, with a laser generator installed at the bottom of the electric push rod, and a laser receiving plate mounted on the left side of the U-shaped frame.

[0011] Preferably, the laser receiving plate is installed inside the mounting slot opened on the left U-shaped frame, and the laser generator, the laser receiving plate, and the slot on the right U-shaped frame are located on the same horizontal line.

[0012] Preferably, an observation window is installed on the front of the sealed chamber door, and a controller is installed on the right side of the front of the high and low temperature test environment chamber, with the test mechanism electrically connected to the controller.

[0013] By employing the above technical solution, this utility model provides a high and low temperature mechanical property testing environment chamber for materials, which has at least the following beneficial effects:

[0014] 1. This utility model uses a pressure plate to fix the plate inside the U-shaped frame, and through the cooperation of a rotating screw and a threaded slide, pulls the U-shaped frame outward, thereby pulling the plate outward until the plate breaks, thus measuring the ultimate tensile value of the plate.

[0015] 2. This utility model uses a drive motor to rotate the rotating shaft, which in turn rotates the right-side U-shaped frame, causing the plate clamped and fixed inside the U-shaped frame to bend until the plate twists and deforms, thereby measuring the twist value of the plate.

[0016] 3. In this invention, a laser generator emits a laser beam that shines onto a laser receiving plate until the laser beam emitted by the lowered laser generator is partially blocked by the expanded plate and cannot shine onto the laser receiving plate. The expansion height of the plate at this point is recorded and compared with the initial thickness to measure the degree of expansion and deformation of the plate after thermal expansion and contraction. Attached Figure Description

[0017] The accompanying drawings, which are provided to further illustrate this application and form part of this application, illustrate exemplary embodiments of this application and are used to explain this application, but do not constitute an undue limitation of this application.

[0018] In the attached diagram:

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the independent structure of the testing mechanism of this utility model;

[0021] Figure 3 This is a cross-sectional view of the testing mechanism of this utility model;

[0022] Figure 4 This is a schematic diagram of the independent U-shaped frame structure on the right side of this utility model;

[0023] Figure 5 This is a schematic diagram of the independently disassembled U-shaped frame on the left side of this utility model.

[0024] In the diagram: 1. High and low temperature test environment chamber; 2. Sealed chamber door; 3. Test mechanism; 301. Placement platform; 302. Bidirectional motor; 303. Lead screw; 304. Threaded slide table; 305. U-shaped frame; 306. Hydraulic cylinder; 307. Pressure plate; 308. Torsion assembly; 3081. Rotating shaft; 3082. Drive motor; 309. Laser detection assembly; 3091. Electric push rod; 3092. Laser generator; 3093. Laser receiving plate; 401. Observation window; 402. Controller. Detailed Implementation

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0026] Example 1

[0027] Current technologies only test materials for high and low temperature resistance, resulting in a limited range of testing items. However, the special operating environment of aerospace equipment necessitates simultaneous testing of tensile strength, torsion, and thermal expansion and contraction under high and low temperature conditions. This embodiment provides a high and low temperature mechanical property testing environment chamber for materials. Please refer to... Figures 1-5 This embodiment provides a high and low temperature mechanical property testing environment chamber for materials, which can perform multiple tests on materials through the high and low temperature testing environment chamber 1, improving testing efficiency. The high and low temperature mechanical property testing environment chamber includes a sealed door 2 hinged to the chamber 1. Inside the chamber 1 is a testing mechanism 3 for testing the mechanical properties of materials under high and low temperature changes. During high and low temperature changes inside the chamber 1, the testing mechanism 3 performs an ultimate tensile test on the material, thereby measuring the ultimate tensile value of the material under extreme high and low temperature conditions. Furthermore, a torsion component 308 is used to torsion the material to determine its torsional resistance. A laser detection component 309 is included to detect the degree of expansion and deformation of the material after thermal expansion and contraction under high and low temperature changes, thus enabling multiple tests on the material.

[0028] Because existing technologies only test the high and low temperature resistance of materials, the testing items are limited. However, due to the special operating environment of aerospace equipment, tensile testing of the sheet material under high and low temperature conditions is also required during high and low temperature testing. Therefore, a testing mechanism 3 is proposed to test the tensile strength of sheet material. The testing mechanism 3 includes a placement platform 301 installed inside a high and low temperature testing environment chamber 1. A bidirectional motor 302 is installed in the center of the placement platform 301. Lead screws 303 are connected to the output ends of the bidirectional motor 302 on both sides. Guide grooves are opened on the left and right sides of the upper surface of the placement platform 301. A threaded slide 304 that slides left and right inside the guide groove is threadedly connected to the lead screw 303. A U-shaped frame 305 is installed on the top of the threaded slide 304. A hydraulic cylinder 306 is installed on the top of the U-shaped frame 305, and the output end of the hydraulic cylinder 306 passes through... A U-shaped frame 305 is used, and a pressure plate 307 is installed at the bottom of the hydraulic cylinder 306. A torsion component 308 for torsion testing of materials is installed on the U-shaped frame 305. A laser detection component 309 for detecting the degree of expansion and deformation of materials under thermal expansion and contraction is set on the U-shaped frame 305. Depending on the size of the sheet material, the bidirectional motor 302 is started to drive the lead screw 303 to rotate, thereby driving the threaded slide 304 on the lead screw 303 to move relative to the guide slide groove, thereby clamping the sheet material inside the U-shaped frame 305. Then, the hydraulic cylinder 306 is started to push the pressure plate 307 down to fix the sheet material inside the U-shaped frame 305, thereby fixing the sheet material of different sizes. Then, the bidirectional motor 302 is started again to drive the lead screw 303 to reverse, thereby pulling the sheet material inside the U-shaped frame 305 outward until the sheet material breaks, thereby measuring the ultimate tensile value of the sheet material.

[0029] The right side of the U-shaped frame 305 has symmetrical through holes and slots on both the front and rear sides. The inner wall of the U-shaped frame 305 is engraved with a scale. The bottom of the pressure plate 307 has anti-slip teeth to better fix the board and prevent slippage when stretching the board.

[0030] Due to the special operating environment of aerospace equipment, when conducting high and low temperature tests, it is also necessary to perform torsion tests on the sheet material under high and low temperature conditions. Therefore, the equipment is also equipped with a torsion component 308. The torsion component 308 includes a rotating shaft 3081 installed on the right U-shaped frame 305. The rotating shaft 3081 is rotatably connected to the inside of a rotating hole opened on the right threaded slide 304. The right end of the rotating shaft 3081 is connected to the output end of the drive motor 3082. After the sheet material is fixed, the drive motor 3082 is started to drive the rotating shaft 3081 to rotate, thereby driving the right U-shaped frame 305 to rotate, which in turn causes the sheet material clamped and fixed inside the U-shaped frame 305 to bend until the sheet material is tortuous and deformed, thereby measuring the torsion value of the sheet material.

[0031] An observation window 401 is installed on the front of the sealed chamber door 2. A controller 402 is installed on the right side of the front of the high and low temperature test environment chamber 1. The test mechanism 3 is electrically connected to the controller 402. The test conditions of the board material inside the high and low temperature test environment chamber 1 can be observed in real time through the observation window 401, and the various data measured are displayed and recorded on the display screen of the controller 402.

[0032] Example 2

[0033] Based on Example 1, such as Figures 1-5 As shown, due to the special operating environment of aerospace equipment, when conducting high and low temperature testing, it is also necessary to detect and record the degree of expansion and deformation of the board under thermal expansion and contraction at high and low temperatures. Therefore, the equipment is also equipped with a laser detection component 309. The laser detection component 309 includes an electric push rod 3091 installed on the right U-shaped frame 305, a laser generator 3092 installed at the bottom of the electric push rod 3091, and a laser receiving plate 3093 installed on the left U-shaped frame 305.

[0034] The laser receiving plate 3093 is installed inside the mounting slot on the left U-shaped frame 305, and the laser generator 3092, the laser receiving plate 3093, and the slot on the right U-shaped frame 305 are on the same horizontal line. After the plate is clamped and fixed inside the U-shaped frame 305, the initial thickness of the plate is recorded. Then, after the high and low temperature test environment chamber 1 is cycled, the laser generator 3092 is started to emit laser light to irradiate the laser receiving plate 3093. At this time, the electric push rod 3091 is started to push the laser generator 3092 down until the laser light emitted by the laser generator 3092 is partially blocked by the expanded plate and cannot irradiate the laser receiving plate 3093. The expansion height of the plate at this time is recorded and compared with the initial thickness to measure the degree of expansion and deformation of the plate after thermal expansion and contraction.

[0035] It should be noted that, in this document, the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0036] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high and low temperature mechanical property testing environment chamber for materials, comprising a sealed chamber door (2) hinged to a high and low temperature testing environment chamber (1), characterized in that: The high and low temperature test environment chamber (1) is equipped with a test mechanism (3) for testing the mechanical properties of materials under high and low temperature changes; The testing mechanism (3) includes a platform (301) installed inside a high and low temperature testing environment chamber (1). A bidirectional motor (302) is installed at the center of the platform (301). Lead screws (303) are connected to the output ends of the bidirectional motor (302) on both sides. Guide grooves are provided on both the left and right sides of the upper surface of the platform (301). A threaded slide (304) is threadedly connected to the lead screw (303) and slides left and right within the guide grooves. A U-shaped frame (305) is installed on the top, and a hydraulic cylinder (306) is installed on the top of the U-shaped frame (305), with the output end of the hydraulic cylinder (306) passing through the U-shaped frame (305). A pressure plate (307) is installed at the bottom of the hydraulic cylinder (306). A torsion assembly (308) for performing torsion tests on the material is installed on the U-shaped frame (305). A laser detection assembly (309) for detecting the degree of expansion and deformation of the material under thermal expansion and contraction is provided on the U-shaped frame (305).

2. The high and low temperature mechanical property testing environment chamber for materials according to claim 1, characterized in that: The U-shaped frame (305) on the right side has symmetrical through holes and slots on its front and rear sides. The inner wall of the U-shaped frame (305) is engraved with a scale. The bottom of the pressure plate (307) has anti-slip teeth.

3. The high and low temperature mechanical property testing environment chamber for materials according to claim 1, characterized in that: The twisting assembly (308) includes a rotating shaft (3081) mounted on the right U-shaped frame (305), and the rotating shaft (3081) is rotatably connected to the inside of a rotating hole opened on the right threaded slide (304). The right end of the rotating shaft (3081) is connected to the output end of the drive motor (3082).

4. The high and low temperature mechanical property testing environment chamber for materials according to claim 2, characterized in that: The laser detection assembly (309) includes an electric push rod (3091) mounted on the right side U-shaped frame (305), a laser generator (3092) mounted on the bottom of the electric push rod (3091), and a laser receiving plate (3093) mounted on the left side U-shaped frame (305).

5. The high and low temperature mechanical property testing environment chamber for materials according to claim 4, characterized in that: The laser receiving plate (3093) is installed inside the mounting slot opened on the left U-shaped frame (305), and the laser generator (3092), the laser receiving plate (3093) and the holes and slots on the right U-shaped frame (305) are located on the same horizontal line.

6. The high and low temperature mechanical property testing environment chamber for materials according to claim 1, characterized in that: An observation window (401) is installed on the front of the sealed door (2), and a controller (402) is installed on the right side of the front of the high and low temperature test environment chamber (1). The test mechanism (3) is electrically connected to the controller (402).

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