Aluminum alloy high temperature tensile testing device

Abstract

The application relates to the technical field of metal tensile testing, in particular to an aluminum alloy high-temperature tensile testing device, which comprises a rack, a lower bearing seat, an upper bearing seat, a lower clamp, an upper clamp and a high-temperature box. The lower bearing seat is fixedly installed on the rack, and the upper bearing seat is slidingly installed on the rack. A rotary table is rotatably installed on the lower bearing seat. A plurality of lower clamps are annularly arranged on the rotary table. The lower clamps are used for installing samples. The upper clamps are installed on the samples. Two tensile plates are symmetrically arranged on the upper bearing seat. The plurality of samples are driven to rotate by a driving device, the samples to be tested are automatically switched, and the broken samples are stored by a storage member. Therefore, the plurality of samples of the same workpiece can be tested under the same environment, the accuracy of the testing device data is effectively improved, the plurality of samples can be heated at the same time, the heating time and the holding time of the samples are effectively reduced, and the testing efficiency of the testing device is improved.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of metal tensile detection, and particularly relates to an aluminum alloy high-temperature tensile detection device. BACKGROUND

[0002] The tensile strength and yield strength of an aluminum alloy material are key indexes for evaluating the mechanical properties of the aluminum alloy material, and are directly related to the safety and service life of a structure. Therefore, accurate determination of the tensile strength and yield strength of the aluminum alloy material under a high-temperature environment is of great significance for product design, safety evaluation and life prediction.

[0003] At present, a conventional high-temperature tensile detection device needs to undergo a long heating and holding stage when detecting the tensile strength, so as to ensure that the whole sample reaches the set temperature uniformly. The process leads to long single test time and low efficiency. Especially in continuous detection of multiple samples, the conventional detection device usually needs to wait until the heating unit cools down to a safe temperature before the sample can be replaced, which further reduces the detection efficiency and is difficult to meet the needs of batch testing. In order to solve the above problems, the application No. CN202510846230.8 proposes an aluminum alloy high-temperature tensile detection device. The device automatically replaces the sample without cooling downtime through the cooperation of the lifting mechanism and the two groups of half-thread sleeves, so as to improve the detection efficiency of the detection device. However, after each sample replacement, the newly clamped sample still needs to undergo the heating and holding process, which not only consumes time but also easily causes heat accumulation due to the continuous high-temperature operation of the high-temperature box, resulting in temperature drift of the detection system (such as the force sensor, extensometer, etc.), and further affecting the consistency and accuracy of the test results of multiple same samples.

[0004] In order to ensure the detection efficiency and data accuracy, a new type of high-temperature tensile detection device is proposed, which can effectively control the heat influence and inhibit the temperature drift while realizing rapid sample replacement, so as to ensure the reliability of continuous testing of multiple samples. SUMMARY

[0005] The application aims to provide an aluminum alloy high-temperature tensile detection device, which can improve the accuracy and detection efficiency of aluminum alloy detection by simultaneously heating multiple samples and automatically clamping the samples.

[0006] To achieve the above-mentioned purpose, the application provides the following technical scheme:

[0007] The utility model provides an aluminium alloy high temperature tensile detection device, including frame, lower bearing seat, upper bearing seat, lower clamp, upper clamp, high temperature box, the frame is fixedly installed with lower bearing seat and is slidably installed with upper bearing seat, be equipped with force transducer on the upper bearing seat, the lower bearing seat is rotatably installed with the turntable, a plurality of lower clamps are arranged in ring on the turntable, the lower clamp is used for installing sample, the upper clamp is installed on the sample, two tensile plates are equipped with on the upper bearing seat, the both sides of upper clamp are equipped with limit plate, the limit plate and tensile plate abut, be equipped with driving arrangement for driving the turntable rotation on the frame, be equipped with receiving piece on the high temperature box, the receiving piece is used for receiving the sample after breaking, strain measuring device is slidably installed on the high temperature box.

[0008] Through the setting of the turntable, a plurality of test samples to be detected are arranged on the turntable, the test samples to be detected are rotated by the driving device, the limit plate of the upper clamp is moved to between the two tensile plates, at this time, the detection of the sample can be carried out, and the plurality of samples are located in the high temperature box, so that the plurality of samples can be heated at the same time, the heating time and the holding time of the sample are effectively reduced, and the detection efficiency of the aluminium alloy is effectively improved, and the plurality of samples are detected at the same temperature, the environment of the electronic components is the same, so that the detection error is effectively reduced, and the accuracy of the data is improved, and the setting of the receiving piece can receive the broken sample on the upper bearing seat, so that the normal detection work is not affected.

[0009] Preferably, the turntable is provided with a guide rod, the lower clamp is slidably installed on the guide rod, the lower bearing seat and the upper bearing seat are each provided with two tensile plates, the guide rod and the lower clamp have a gap, the upper clamp and the lower clamp are each provided with a limit plate, the tensile plate is provided with a positioning rod with a tapered end, and the limit plate is provided with a positioning hole matched with the positioning rod.

[0010] By arranging the tensile plate on the lower bearing seat, the lower mounting seat is a force component when the sample is subjected to tensile detection, so that the turntable is not a force component, the inclination of the turntable caused by the moment is avoided, the axis of the sample force cannot be aligned with the tensile shaft of the upper bearing seat, the detection error is increased, and the accuracy of the detection is affected, the turntable and the driving device need to consider the thermal expansion and contraction of high temperature, and a gap needs to be reserved, so that the sample cannot be coaxial with the upper bearing seat during the rotation of the sample, and the bending moment of the sample during detection affects the accuracy of the detection, the positioning of the positioning rod and the positioning hole can make the axis of the sample coaxial with the axis of the upper bearing seat, and the accuracy of the experiment is ensured.

[0011] Preferably, the driving device comprises a motor, a transmission member and a transmission gear, the motor is arranged on the frame, the main shaft of the motor is coaxially arranged with the lower bearing seat, the transmission gear is arranged on the lower bearing seat, the transmission member is connected between the motor and the transmission gear, the driving gear is arranged on the rotary table, and the transmission gear is engaged with the driving gear.

[0012] The driving device drives the transmission gear to rotate through the transmission member, and then drives the rotary table to rotate through the transmission gear, so that the motor can be coaxial with the lower bearing seat, thereby reducing the diameter of the lower bearing seat during manufacturing, effectively reducing the diameter of the lower end of the lower bearing seat, so that when the high-temperature box is buckled on the lower bearing seat, the heat dissipation area of the lower bearing seat can be reduced, the heat preservation effect of the high-temperature box is better, thereby ensuring the uniformity of the internal temperature of the high-temperature box, and avoiding the temperature gradient of the sample to affect the detection accuracy.

[0013] Preferably, the rotary table is provided with a sliding groove, a sliding block is slidably arranged in the sliding groove, the guide rod is arranged on the sliding block, a push-pull block is slidably arranged on the lower bearing seat, a push-pull rod is arranged on the push-pull block, a driving groove is arranged on the push-pull block, the transmission gear has a toothed part, the transmission gear is provided with a driving block away from the toothed part, the driving block is slidably connected with the driving groove, the driving groove is a through groove, the diameter of the driving block located in the pitch circle of the transmission gear is greater than the length of the plane on the side of the push-pull rod where the driving groove is located, the diameter of the driving block located in the pitch circle of the transmission gear is greater than the length of the plane on the side of the transmission gear where the driving groove is located, the push-pull rod is provided with a connecting groove, the sliding block is provided with a connecting pin matched with the connecting groove, and the two stretchable plates between the upper bearing seat and the lower bearing seat are connected with reinforcing plates.

[0014] The transmission gear has teeth only on part of the arc surface, so that the rotary table rotates intermittently when the motor rotates; the driving block is provided with a driving groove, and the diameter of the pitch circle where the driving block is located is greater than the length of the plane where the driving groove is located on the side of the push-pull rod, and the diameter of the pitch circle where the driving block is located is greater than the length of the plane where the driving groove is located on the side of the transmission gear, so that the transmission gear drives the driving block to rotate, and the push-pull block moves reciprocatingly intermittently, and the rotation of the rotary table does not interfere with the reciprocating movement of the push-pull block, so that the test sample can be moved to the center of the rotary table when the driving device moves, the rotary table is coaxial with the lower bearing seat, the lower bearing seat can be coaxial with the upper bearing seat, and the high-temperature box can be coaxial with the upper bearing seat when the high-temperature box is buckled on the lower bearing seat and the upper bearing seat, so as to avoid the detection error caused by the bending moment of the high-temperature box on the upper bearing seat when the upper bearing seat moves, the high-temperature box is coaxial with the upper bearing seat and the lower bearing seat, the test samples can be distributed in the high-temperature box in a ring shape, the temperature gradient of the test samples is the same, the accuracy of the test sample detection is ensured, the limiting plates can be linearly inserted between the stretching plates, the length of the stretching plates can be reduced, the torque borne by the stretching plates can be reduced, a reinforcing plate can be additionally arranged between the two limiting plates, the bending resistance of the stretching plates can be improved, the rigidity of the limiting plates can be improved, and the detection error caused by the deformation of the limiting plates can be effectively reduced.

[0015] Preferably, the lower bearing seat is provided with a guide groove, the connecting groove and the guide groove are connected end to end when the push-pull rod moves to the maximum limit position, the connecting pin is matched with the guide groove, and chamfers are formed at the two ends of the guide groove.

[0016] The arrangement of the guide groove can make the test sample move to the connecting groove before sliding, so as to avoid the interference between the sliding block and the stretching plate and affect the normal operation of the detection device, the arrangement of the chamfer can avoid the assembly error and control error from causing the connecting pin to fail to enter the connecting groove or the guide groove, so as to improve the reliability of the detection device, reduce the assembly precision of the parts, and reduce the manufacturing cost of the device.

[0017] Preferably, the receiving member comprises a top plate and a push rod, the top plate is rotationally connected to the reinforcing plate of the upper bearing seat by a torsion spring, the push rod is slidingly installed on the reinforcing plate of the upper bearing seat, one end of the top plate abuts against the push rod, an inclined surface one is arranged on one side of the push rod, the inclined surface one abuts against the limiting plate of the upper clamp, two guide rods are arranged on the high-temperature box, the widths of the two guide rods are equal to the width of the upper clamp, the two guide rods are symmetrically arranged along the symmetry plane of the stretching plate, and the two guide rods are arranged obliquely downward.

[0018] When the upper stretching plate moves above the high-temperature box, the high-temperature box pushes the top plate to swing, and pushes the push rod to slide through the top plate, and the setting of the first inclined surface of the push rod can push the limiting plate to be separated from the positioning rod, the upper clamp is pushed to move between the two guide rods, and the upper clamp is slid to below the two guide rods, so that the broken sample can be stored, and external power is not needed, the design structure is simple, and the problem that the electric power source cannot be arranged under the high-temperature environment can be avoided.

[0019] Preferably, a limiting pin is elastically arranged on the push-pull block, a limiting groove is arranged on the lower bearing seat, a second inclined surface is arranged on the limiting groove, and the end of the limiting pin is attached to the second inclined surface.

[0020] Through the arrangement of the limiting pin, when the limiting pin enters the limiting groove, the push-pull block can be prevented from moving, so that the push-pull block is prevented from moving due to vibration, the connecting pin cannot enter the connecting groove, the detection device cannot work, and the second inclined surface can make the limiting pin separate from the limiting groove.

[0021] Preferably, a bending part is arranged on the guide rod, and the bending part is arranged in a spiral shape.

[0022] The spiral arrangement of the bending part can accommodate more broken samples, improve the space utilization rate of the high-temperature box, reduce the diameter of the high-temperature box, reduce the temperature gradient of the high-temperature box, and ensure the accuracy of detection.

[0023] Compared with the prior art, the beneficial effects of the present application are:

[0024] 1. The plurality of samples are driven to rotate by the driving device, the broken samples are stored by the storage member, the plurality of samples of the same workpiece can be detected in the same environment, the accuracy of the detection device data is effectively improved, the plurality of samples can be heated at the same time, the sample heating time and the holding time are effectively reduced, and the detection efficiency of the detection device is improved.

[0025] 2. The driving device can drive the samples to rotate intermittently and reciprocally move intermittently, the rotary table, the upper bearing seat and the lower bearing seat are coaxial, the bending moment generated during sample detection is avoided, the accuracy of detection is affected, the high-temperature box and the upper bearing seat are coaxial, the temperature gradient of the plurality of samples is the same, the bending moment generated by the high-temperature box on the upper bearing seat is avoided, and the accuracy of sample detection is ensured.

[0026] 3. The storage member pushes the broken samples into the guide rods through the movement of the upper bearing seat, the setting of the external power source is reduced, the manufacturing cost is reduced, the bending part of the guide rod is arranged in a spiral shape, the space utilization rate of the high-temperature box is improved, the diameter of the high-temperature box is reduced, the temperature gradient of the high-temperature box is reduced, and the accuracy of detection is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 It is the schematic diagram of the whole structure of the present application;

[0028] Figure 2 It is the sectional view of the heating box part structure of the present application;

[0029] Figure 3 It is Figure 2 It is the schematic diagram of the part structure of removing the heating box and the frame;

[0030] Figure 4 It is the schematic diagram of the part structure of the lower clamp of the present application not moving to the limiting plate;

[0031] Figure 5 It is Figure 1 It is the sectional view of the structure of removing the frame and the heating box at A-A;

[0032] Figure 6 It is Figure 5 It is the enlarged view at B;

[0033] Figure 7 It is the schematic diagram of the structure of the transmission gear, the push-pull block and the lower bearing seat cooperation of the present application.

[0034] In the figure: 1, frame; 2, lower bearing seat; 3, upper bearing seat; 4, lower clamp; 5, upper clamp; 6, high temperature box; 7, rotary table; 8, driving device; 81, transmission gear; 82, driving gear; 83, transmission member; 84, motor; 9, storage member; 91, top plate; 92, push rod; 10, stretching plate; 11, limiting plate; 12, sample; 13, guide rod; 14, positioning rod; 15, positioning hole; 16, sliding groove; 17, sliding block; 18, push-pull block; 19, push-pull rod; 20, driving groove; 21, gear tooth; 22, driving block; 23, inclined surface two; 24, connecting groove; 25, connecting pin; 26, reinforcing plate; 27, guide groove; 28, chamfer; 29, inclined surface one; 30, guide rod; 301, bending part; 31, limiting pin; 32, limiting groove. DETAILED DESCRIPTION

[0035] Please refer to Figures 1 to 7 The present application provides a kind of aluminum alloy high temperature tensile testing device, technical scheme as follows:

[0036] An aluminum alloy high-temperature tensile testing device, comprising a rack 1, a lower bearing seat 2, an upper bearing seat 3, a lower clamp 4, an upper clamp 5, a high-temperature box 6, the lower bearing seat 2 is fixedly installed on the rack 1, and the upper bearing seat 3 is slidingly installed; the upper bearing seat 3 moves up and down through the driving of a hydraulic cylinder; a force sensor is arranged on the upper bearing seat; the force sensor is used for detecting the tension of the sample; a rotary table 7 is rotatably installed on the lower bearing seat 2; a plurality of lower clamps 4 are arranged in a ring shape on the rotary table 7; the lower clamps 4 are used for installing a sample 12; the upper clamp 5 is installed on the sample 12; two stretching plates 10 are symmetrically arranged on the upper bearing seat 3; limiting plates 11 are arranged on the two sides of the upper clamp 5; the limiting plates 11 abut against the stretching plates 10; a driving device 8 is installed on the rack 1; a receiving piece 9 is arranged on the high-temperature box 6; a strain measuring device is slidingly installed on the high-temperature box 6; the strain measuring device adopts a high-temperature extensometer; the driving device 8 comprises a motor 84, a transmission member 83 and a transmission gear 81; the motor 84 is arranged on the rack 1; the main shaft of the motor 84 is coaxially arranged with the lower bearing seat 2; the transmission gear 81 is arranged on the lower bearing seat 2; the transmission member 83 is connected between the transmission gear 81 and the motor 84; the transmission member 83 is a transmission belt; the transmission belt is connected with the main shaft of the motor 84 and the transmission gear 81; a driving gear 82 is arranged on the rotary table 7; the transmission gear 81 is engaged with the driving gear 82; in operation, the sample 12 is installed on the lower clamp 4, and the upper clamp 5 is installed on the sample 12; the power of the motor 84 is transmitted to the transmission gear 81 through the transmission member 83, and then the rotary table 7 is driven to rotate through the driving gear 82, so that the limiting plate 11 of the upper clamp 5 is rotated to between the two stretching plates 10 of the upper bearing seat 3; at this time, the upper bearing seat 3 is controlled to move upward for tensile testing; in this process, a plurality of samples 12 can be heated at the same time, so that the plurality of samples 12 of the same workpiece can be tested at the same time, the accuracy of the data of the testing device is effectively improved, and the plurality of samples 12 can be heated at the same time, so that the heating time and the holding time of the sample 12 are effectively reduced, the detection efficiency of the testing device is improved, the motor 84 is coaxial with the lower bearing seat 2, so that the diameter of the lower bearing seat 2 can be reduced during manufacturing, the diameter of the lower end of the lower bearing seat 2 is effectively reduced, the heat dissipation area of the lower bearing seat 2 is reduced when the high-temperature box 6 is buckled on the lower bearing seat 2, the heat preservation effect of the high-temperature box 6 is better, the uniformity of the temperature in the high-temperature box 6 is ensured, the temperature gradient of the sample 12 is avoided, the detection accuracy is affected, the receiving piece 9 is arranged, and the broken test sample 12 can be received.The guide rod 13 is installed on the rotating table 7, the lower clamp 4 is slidingly installed on the guide rod 13, two stretching plates 10 are symmetrically arranged on the upper bearing seat 3 and the lower bearing seat 2, the guide rod 13 has a gap with the lower clamp 4, the stretching plates 10 are arranged on both sides of the upper clamp 5 and the lower clamp 4, the positioning rod 14 with a tapered end is arranged on the stretching plate 10, the positioning hole 15 matched with the positioning rod 14 is arranged on the upper stretching plate 10 and the lower stretching plate 10, the stretching plate 10 is arranged on the lower bearing seat 2, and the limiting plate 11 is arranged on the lower clamp 4, so that when the rotating table 7 rotates, the limiting plate 11 of the lower clamp 4 also enters between the stretching plates 10 of the lower stretching plate 10, the lower clamp 4 is sleeved on the guide rod 13, the limiting plate 11 of the lower clamp 4 is attached to the stretching plate 10 of the lower bearing seat 2 when the upper clamp 5 stretches the sample 12, the lower bearing seat 2 is stressed during the stretching detection, the rotating table 7 is not stressed to cause uneven stress and inclination, the sample 12 is not bent, the sample 12 is not stressed to be flush with the tension shaft of the upper bearing seat 3, and the detection accuracy is affected, the positioning rod 14 can enter the positioning hole 15 when the sample 12 is pulled and moved, the sample 12 is positioned, the sample 12 cannot be coaxial with the upper bearing seat 3, the bending moment is avoided during the stretching process, the detection accuracy is ensured, the guide rod 13 has a gap with the lower clamp 4, the position of the lower clamp 4 can be adjusted, the positioning rod 14 can enter the positioning hole 15 for positioning, the position deviation caused by the thermal expansion and contraction of the driving device 8 and the machining error of the rotating table 7 is avoided, the positioning rod 14 cannot enter the inside of the positioning hole 15, the guide rod 13 is designed, the sample 12 is connected with the upper clamp 5 and the lower clamp 4 outside when the sample 12 is replaced, and then the sample 12 is placed on the guide rod 13, so that the sample 12 is more convenient to install.

[0037] The sliding groove 16 is arranged on the rotating table 7, the sliding block 17 is slidably arranged in the sliding groove 16, the guide rod 13 is arranged on the sliding block 17, the push-pull block 18 is slidably arranged on the lower bearing seat 2, the push-pull rod 19 is arranged on the push-pull block 18, the drive groove 20 is arranged on the push-pull block 18, the transmission gear 81 has the gear teeth 21 on a part of the arc surface, the drive block 22 is arranged on the side of the transmission gear 81 away from the gear teeth 21, the drive block 22 is slidably connected with the drive groove 20, the drive groove 20 is a through groove, the diameter of the drive block 22 is 1 cm, the diameter of the pitch circle where the transmission gear 81 is located is 20 cm, the length of the side of the drive groove 20 on the side of the transmission gear 81 is 12 cm, and the length of the side of the drive groove 20 on the side of the push-pull rod 19 is 18 cm, the connecting groove 24 is arranged on the push-pull rod 19, and the connecting pin 25 matched with the connecting groove 24 is arranged on the sliding block 17; the 1 / 2 arc surface of the transmission gear 81 has the gear teeth 21, so that the rotating table 7 can be intermittently rotated when the motor 84 rotates, when the rotating table 7 stops rotating, the drive block 22 moves to abut against the push-pull block 18 and pushes the push-pull block 18 to move, so that the sliding block 17 slides, the limiting plate 11 moves horizontally between the two stretching plates 10, the sample 12 to be tested moves to the center of the rotating table 7, the rotating table 7 is coaxial with the lower bearing seat 2, the lower bearing seat 2 can be coaxial with the upper bearing seat 3, when the high-temperature box 6 is buckled on the lower bearing seat 2 and the upper bearing seat 3, the high-temperature box 6 can be coaxial with the upper bearing seat 3, so that the detection error caused by the bending moment of the high-temperature box 6 on the upper bearing seat 3 when the upper bearing seat 3 moves is avoided, the high-temperature box 6 is coaxial with the upper bearing seat 3 and the lower bearing seat 2, the multiple test samples 12 can be annularly distributed in the high-temperature box 6, so that the temperature gradients of the multiple test samples 12 are the same, and the accuracy of the test sample 12 is ensured, the limiting plate 11 linearly enters between the stretching plates 10, the length of the stretching plate 10 can be reduced, the torque borne by the stretching plate 10 can be reduced, a reinforcing plate 26 can be additionally arranged between the two limiting plates 11, the bending resistance of the stretching plate 10 is improved, the rigidity of the limiting plate 11 is improved, and the detection error caused by the deformation of the limiting plate 11 is effectively reduced; the guide groove 27 is arranged on the lower bearing seat 2, when the push-pull rod 19 moves to the maximum limit position, the connecting groove 24 and the guide groove 27 are connected end to end, the connecting pin 25 is matched with the guide groove 27, and the chamfers 28 are arranged at the two ends of the guide groove 27; the arrangement of the guide groove 27 can make the sample 12 to be tested slide only when the sample 12 to be tested moves to the connecting groove 24 when the rotating table 7 rotates, so that the sliding block 17 is prevented from moving and interfering with the stretching plate 10 to affect the normal operation of the detection device, the arrangement can avoid the assembly error and the control error to cause the connecting pin 25 to be unable to enter the connecting groove 24 or the guide groove 27, so that the reliability of the detection device can be improved, the assembly precision of the parts can be reduced, and the manufacturing cost of the device can be reduced; the limiting pin 31 is elastically arranged on the push-pull block 18, the limiting groove 32 is arranged on the lower bearing seat 2, the inclined surface 23 is arranged on the limiting groove 32, and the end of the limiting pin 31 abuts against the inclined surface 23.When the push-pull block 18 is reset, the limiting pin 31 is driven into the limiting groove 32 by the elastic force, so that the push-pull block 18 cannot be moved due to equipment vibration, and the connecting pin 25 cannot enter the connecting groove 24, causing the detection device to be unable to work, and the setting of the second inclined surface 23 can make the limiting pin 31 disengage from the limiting groove 32.

[0038] The receiving member 9 comprises a top plate 91 and a push rod 92, the top plate 91 is rotationally connected to the reinforcing plate 26 of the upper bearing seat 3 by a torsion spring, and the push rod 92 is slidingly installed on the reinforcing plate 26 of the upper bearing seat 3, one end of the top plate 91 abuts against the push rod 92, one side of the push rod 92 is provided with an inclined surface one 29, the inclined surface one 29 abuts against the limiting plate 11 of the upper clamp 5, two guide rods 30 are provided on the high-temperature box 6, the width of the two guide rods 30 is equal to the width of the upper clamp 5, and the two guide rods 30 are symmetrically arranged along the symmetry plane of the stretching plate 10; when the upper stretching plate 10 moves above the high-temperature box 6, the high-temperature box 6 pushes the top plate 91 to swing, and pushes the push rod 92 to slide through the top plate 91, and the setting of the inclined surface one 29 of the push rod 92 can push the limiting plate 11 to disengage from the positioning rod 14, and then push the upper clamp 5 to move between the two guide rods 30 and slide below the two guide rods 30, thereby realizing the receiving of the broken test sample 12, and without the need for additional power, the design structure is simple, the guide rod 30 is provided with a bending part 301, and the bending part 301 is arranged in a spiral; the spiral arrangement of the bending part 301 can accommodate more broken test samples 12 in the guide rod 30, improve the space utilization rate of the high-temperature box 6, thereby reducing the diameter of the high-temperature box 6, reducing the temperature gradient of the high-temperature box 6, and ensuring the accuracy of detection.

[0039] Working principle: before operation, the test sample 12 is installed on the upper clamp 5 and the lower clamp 4, and then the lower clamp 4 is sleeved on the guide rod 13, and at this time the high-temperature box 6 can be buckled to heat.

[0040] After the heating is completed, the upper bearing seat 3 is controlled to descend to a set height, the motor 84 is controlled to rotate 1 / 4 turn, when the motor 84 rotates, the driving block 22 extrudes the push-pull block 18, drives the sliding block 17 to move, at the same time, the driving block 22 enters the guide groove 27, so that the sample 12 moves to the center of the rotary table 7, at this time, the sample 12 is located between the two stretching plates 10, at this time, the upper bearing seat 3 slowly moves up, when the tensile detection value changes, the strain measurement device is pushed into contact with the sample 12 to be detected, and the strain measurement device is fixed by the bolt, at this time, the upper bearing seat 3 is controlled to move up again to detect the tensile property of the aluminum alloy, after the sample 12 breaks, the upper bearing seat 3 continues to move up, so that the top plate 91 abuts against the upper side of the high-temperature box 6, the high-temperature box 6 drives the top plate 91 to swing, and drives the push rod 92 to swing through the top plate 91, through the inclined surface one 29 of the push rod 92, the limiting plate 11 can be extruded to separate from the positioning rod 14, then the push rod 92 drives the limiting plate 11 to move, so that the upper clamp 5 moves to between the two guide rods 30, and slides along the guide rod 30 to be stored, then the strain measurement device is unlocked, and exits the high-temperature box 6, then the motor 84 is controlled to rotate 3 / 4 turn, when rotating, the driving block 22 drives the sliding block 17 to reset, after rotating 1 / 4 turn, the driving block 22 separates from the guide groove 27, at this time, the motor 84 rotates the sliding block 17 and cannot move, the transmission gear 81 is engaged with the driving gear 82, the rotary table 7 continues to rotate, the connecting pin 25 on the sliding block 17 of the sample 12 to be detected enters the guide groove 27, and the connecting pin 25 of the next sliding block 17 enters the connecting groove 24, at this time, the above steps are repeated to detect the next sample 12, so that the heating time of the sample 12 is effectively reduced, the detection efficiency is improved, and multiple samples 12 of the same workpiece can be detected in the same environment, so that the accuracy of the detection device data is effectively improved.

[0041] The above describes one embodiment of the application in detail with reference to the drawings, but the application is not limited to the above described embodiment. For those skilled in the art, various changes, modifications, replacements and variations of the embodiments can be made without departing from the principles and ideas of the application, which shall still fall within the protection scope of the application.

Claims

1. A high-temperature tensile testing device for aluminum alloys, characterized in that, The apparatus includes a frame (1), a lower support (2), an upper support (3), a lower clamp (4), an upper clamp (5), and a high-temperature chamber (6). The lower support (2) is fixedly mounted on the frame (1), and the upper support (3) is slidably mounted on the frame (1). A force sensor is provided on the upper support (3). A turntable (7) is rotatably mounted on the lower support (2). Multiple lower clamps (4) are arranged in a ring on the turntable (7). The lower clamps (4) are used to mount the sample (12). The upper clamps (5) The sample (12) is mounted on the upper support (3), and two tension plates (10) are symmetrically arranged on the upper support (3). Limiting plates (11) are provided on both sides of the upper clamp (5). The limiting plates (11) abut against the tension plates (10). The frame (1) is provided with a driving device (8) for driving the turntable (7) to rotate. The high temperature chamber (6) is provided with a storage component (9) for storing the fractured sample (12). A strain measuring device is slidably installed on the high temperature chamber (6). The turntable (7) is equipped with a guide rod (13), and the lower clamp (4) is slidably mounted on the guide rod (13). The lower support seat (2) and the upper support seat (3) are each symmetrically provided with two tension plates (10). There is a gap between the guide rod (13) and the lower clamp (4). The upper clamp (5) and the lower clamp (4) are each provided with a limiting plate (11). The tension plate (10) is provided with a positioning rod (14) with a conical end. The limiting plate (11) is provided with a positioning hole (15) that cooperates with the positioning rod (14). The drive device (8) includes a motor (84), a transmission component (83), and a transmission gear (81). The motor (84) is mounted on the frame (1). The main shaft of the motor (84) is coaxially mounted with the lower support seat (2). The lower support seat (2) is provided with a transmission gear (81). The transmission component (83) connects the transmission gear (81) and the motor (84). The turntable (7) is provided with a drive gear (82). The transmission gear (81) meshes with the drive gear (82). The turntable (7) has a slide groove (16), and a slider (17) is slidably installed inside the slide groove (16). The guide rod (13) is set on the slider (17). A push-pull block (18) is slidably installed on the lower support (2). A push-pull rod (19) is provided on the push-pull block (18). A drive groove (20) is provided on the push-pull block (18). The transmission gear (81) has teeth (21) on its arc surface. A drive block (22) is provided on the side of the transmission gear (81) away from the teeth (21). The drive block (22) is slidably connected to the drive groove (20). 20) is a through groove. The diameter of the pitch circle of the drive block (22) located on the transmission gear (81) is greater than the plane length of the drive groove (20) located on the side of the push-pull rod (19). The diameter of the pitch circle of the drive block (22) located on the transmission gear (81) is greater than the plane length of the drive groove (20) located on the side of the transmission gear (81). The push-pull rod (19) is provided with a connecting groove (24). The slider (17) is provided with a connecting pin (25) that cooperates with the connecting groove (24). A reinforcing plate (26) is connected between the two tension plates (10) located on the upper bearing seat (3) and the lower bearing seat (2).

2. The high-temperature tensile testing device for aluminum alloys according to claim 1, characterized in that, The lower support seat (2) is provided with a guide groove (27). When the push-pull rod (19) moves to the maximum limit position, the connecting groove (24) is connected to the guide groove (27) end to end. The connecting pin (25) cooperates with the guide groove (27). The guide groove (27) has chamfers (28) at both ends.

3. The high-temperature tensile testing device for aluminum alloys according to claim 1, characterized in that, The storage component (9) includes a top plate (91) and a push rod (92). The top plate (91) is rotatably connected to the reinforcing plate (26) located on the upper support seat (3) by a torsion spring. The push rod (92) is slidably installed on the reinforcing plate (26) located on the upper support seat (3). One end of the top plate (91) abuts against the push rod (92). One side of the push rod (92) is provided with a slope (29). The slope (29) abuts against the limiting plate (11) of the upper clamp (5). The high temperature box (6) is provided with two guide rods (30). The width of the two guide rods (30) is equal to the width of the upper clamp (5). The two guide rods (30) are symmetrically arranged along the symmetrical plane of the tension plate (10). The two guide rods (30) are arranged obliquely downward.

4. The high-temperature tensile testing device for aluminum alloys according to claim 1, characterized in that, The push-pull block (18) is elastically installed with a limiting pin (31), the lower bearing seat (2) is provided with a limiting groove (32), the limiting groove (32) is provided with a second inclined surface (23), and the end of the limiting pin (31) is in contact with the second inclined surface (23).

5. The high-temperature tensile testing device for aluminum alloys according to claim 3, characterized in that, The guide rod (30) is provided with a curved part (301), which is arranged in a spiral.

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