A spring temperature-stress coordinated loading test device

Abstract

The present invention provides a spring temperature-stress collaborative loading test device, including a box, the box is divided from top to bottom into an upper mechanical stress loading zone, a middle temperature stress loading zone and a lower deformation data real-time collection zone; a stress loading device is arranged in the mechanical stress loading zone, a spring fixture is arranged in the temperature stress loading zone, the stress loading device acts on the spring fixture, a to-be-detected part that deforms with the spring fixture is connected to the lower part of the spring fixture, the to-be-detected part freely extends into the deformation data real-time collection zone, and a detection system for detecting the displacement detected by the detection part is arranged in the deformation data real-time collection zone; and a temperature control system is arranged in the temperature stress loading zone. The device of the present invention can perform high-precision in-situ displacement measurement and accelerated storage life test for the elastic coefficient K and constant force strain of firearm spring components.

Description

Technical Field

[0001] The invention relates to a test device for detecting the life and deformation of a spring, in particular to a test device for accelerated storage life test and in-situ detection of deformation of a firearm spring. Background Art

[0002] It is necessary to accurately detect the service life and deformation of firearm spring components. The existing spring detection devices do not have a device that can simultaneously detect the service life and deformation of the spring, especially a high-precision detection device for firearm springs.

[0003] Chinese patent CN110426299A discloses a spring life test device that is convenient for yield index detection, and specifically discloses: comprising a base and a supporting side plate vertically arranged at the upper left end thereof, a mounting plate vertically arranged at the upper right side of the supporting side plate, a rotating disk rotatably arranged at the end of the mounting plate through a rotating shaft, the input end of the rotating disk is transmission-connected to the output end of a driving motor arranged on the mounting plate through a transmission belt, a slider that can slide straightly along the surface of the rotating disk is provided through an adjusting mechanism, a slider surface is rotationally connected to the upper end of a transmission connecting rod through a fixed shaft, the lower end of the transmission connecting rod is connected to a piston column slidably arranged in a fixed sleeve, the left side of the fixed sleeve is connected and fixed to the supporting side plate through a positioning rod, a detector for detecting the degree of spring deformation and the magnitude of tension is provided at the lower end of the piston column, the detector, the driving motor and the adjusting mechanism are electrically connected to a control panel arranged on the supporting side plate, a fixing mechanism for fixing the spring is provided at the lower end of the detector and the upper end of the base, and the fixing mechanism includes a first fixing ring for fixing the upper end of the spring B and a second fixing ring for fixing the lower end of the spring B.

[0004] The above patent provides a sliding slider and a detector for detecting the deformation degree and size of the spring to detect the yield index of the spring. However, the detection accuracy in the above patent is poor and is only applicable to general springs, but not to the detection of high-precision firearm springs. Summary of the invention

[0005] The object of the present invention is to provide a high-precision test device for firearm springs which can simultaneously perform accelerated storage life test and deformation in-situ detection test.

[0006] In order to achieve the above-mentioned purpose, the present invention is configured as follows: a spring temperature-stress coordinated loading test device, comprising a box, the box is divided from top to bottom into an upper mechanical stress loading zone, a middle temperature stress loading zone and a lower deformation data real-time acquisition zone; a stress loading device is arranged in the mechanical stress loading zone, a spring fixture is arranged in the temperature stress loading zone, the stress loading device acts on the spring fixture, a to-be-detected part that is displaced with the spring fixture is connected to the lower part of the spring fixture, the to-be-detected part freely extends into the deformation data real-time acquisition zone, and a detection system for detecting the displacement detected by the detection part is arranged in the deformation data real-time acquisition zone; a temperature control system is arranged in the temperature stress loading zone. The experimental device configured in the above manner can carry out accelerated storage life test and in-situ detection experiment of deformation of firearm springs.

[0007] In order to further detect the deformation of the firearm spring, an upper partition is arranged between the mechanical stress loading area and the temperature stress loading area, a stress loading through hole is arranged in the middle of the upper partition, and the spring tooling includes a mounting rod, the mounting rod portion passes through the stress loading through hole and is connected to the stress loading device, an upper blocking plate is arranged at the bottom of the stress loading through hole, a mounting rod through hole is arranged on the upper blocking plate, and a lower blocking plate fixedly connected to the mounting rod is arranged at the bottom of the mounting rod, and the tested spring is sleeved on the mounting rod and is located between the upper blocking plate and the lower blocking plate.

[0008] Preferably, the stress loading device is a pulley assembly, a hanging ring is provided at the end of the pulley assembly, and the hanging ring is connected to the head of the mounting rod through a connecting piece.

[0009] Preferably, the connector includes a rigid connector body, a hook is provided at the top of the rigid connector body, a screw is provided at the bottom of the hook and is screwed to the top of the rigid connector body, and the hook is connected to the hanging ring; a lower hanging ring is provided at the bottom of the rigid connector body, a screw is provided at the top of the lower hanging ring and is screwed to the bottom of the rigid connector body, the lower hanging ring is inserted into the top opening of the mounting rod, and the opening is locked by a pin to achieve the connection between the lower hanging ring and the mounting rod.

[0010] In order to further detect the deformation of the firearm spring, a lower partition is arranged between the temperature stress loading area and the deformation data real-time collection area, and a detection hole is arranged in the middle of the lower partition. The bottom of the mounting rod is connected to the lower baffle plate by a screw, and the screw is provided with a central axis hole. A detection rope is inserted into the central axis hole and fixedly connected to the screw by a pin. The detection rope is freely vertical downward and passes through the detection hole to be connected to the part to be detected.

[0011] In order to further realize the long-term storage life test of firearm springs, the part to be tested is a panel, the detection system includes a surface laser displacement sensor, and the detection system also includes a computer. The computer is connected to the controller through a standard serial port, the controller is connected to the surface laser displacement sensor, the controller is connected to a power supply, and the computer is also connected to the power supply through a standard serial port and a dual-channel relay module. The computer is provided with a data processing and data storage module, and the computer has a display screen capable of displaying and exporting.

[0012] In order to further realize the reliability of the device, the spring temperature-stress coordinated loading test device includes a rectangular load-bearing frame, the upper part of the load-bearing frame is a mechanical stress loading area skeleton, and a box and a door are arranged in the mechanical stress loading area skeleton, the middle part of the load-bearing frame is a temperature stress loading area skeleton, and a box and a door are arranged in the temperature stress loading area skeleton, and the lower part of the load-bearing frame is a deformation data real-time collection area skeleton, and a box and a door are arranged in the deformation data real-time collection area skeleton.

[0013] Preferably, the skeleton material of the mechanical stress loading zone is 3030 aluminum alloy profile, and the wall thickness is ≥2mm; the rear wall and the top plate of the box in the mechanical stress loading zone are made of aluminum alloy plate with a thickness of ≥1mm, and the bottom plate is made of aluminum alloy plate with a thickness of ≥2mm, and a reinforcing rib load-bearing structure is arranged on the bottom plate; the front wall, left wall and right wall of the box in the mechanical stress loading zone are all door structures, and the front wall adopts a double-door structure, and each door adopts an aluminum alloy profile inlaid with plexiglass structure, and the thickness of the plexiglass is ≥1mm.

[0014] Preferably, the top surface, bottom surface and three side surfaces of the box body in the temperature stress loading zone are insulated, including an inner wall, an outer wall and an intermediate insulation layer. The inner wall is made of 304 stainless steel with a thickness ≥1mm, the outer wall is made of galvanized cold-rolled steel plate, and the intermediate insulation layer is hard polyurethane foam or glass wool with a thickness ≥100mm; the other side of the box body in the temperature stress loading zone is a ventilation panel with ventilation holes arranged thereon, and a heating bellows is also arranged in the box body in the temperature stress loading zone.

[0015] Preferably, the skeleton of the deformation data real-time collection area is welded from rectangular galvanized steel pipes with a wall thickness of ≥1mm. The side walls of the box of the deformation data real-time collection area are closed with galvanized steel plates with a thickness of ≥1mm, and a double-door structure is provided on one side. The bottom plate of the box of the deformation data real-time collection area is made of stainless steel with a thickness of ≥1mm, and a reinforcing rib structure is provided.

[0016] Beneficial effects:

[0017] The spring temperature-stress coordinated loading test device of the present invention realizes high-precision in-situ displacement measurement of the elastic coefficient K and constant force strain of a firearm spring component.

[0018] The spring to be tested is installed in the temperature stress loading area in the middle of the test device, and then the pulley group in the mechanical stress loading area is used to pressure load the spring fixture, and the pressure is transmitted to the test spring through the fixture to achieve constant force loading. At the same time, the deformation of the spring is transmitted to the panel to be tested, forming the displacement of the panel to be tested. A non-contact surface laser sensor is used to detect the deformation data of the tested spring under constant stress in real time. At the same time, according to the control of the spring test temperature in the temperature stress loading area and the coordinated stress loading, the accelerated storage life test of the tested spring is realized.

[0019] Furthermore, the detection system of the present invention can detect and display the deformation of the spring in real time, with high detection accuracy and reliability, and can achieve long-term detection to ensure the stability of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is an isometric view of the spring temperature-stress coordinated loading test device in the embodiment;

[0021] Figure 2 It is a front view of the spring temperature-stress coordinated loading test device in the embodiment;

[0022] Figure 3 for Figure 2 AA section view;

[0023] Figure 4 for Figure 3 A partial enlarged view B;

[0024] Figure 5 for Figure 3 A partial enlarged view C;

[0025] Figure 6 It is the axonometric drawing of the connecting parts;

[0026] Figure 7 This is the hardware connection diagram of the detection system. DETAILED DESCRIPTION

[0027] The specific embodiments of the present invention are further described in detail below in conjunction with the accompanying drawings, but the present invention is not limited to these embodiments, and any improvement or substitution based on the basic spirit of the present embodiment still falls within the scope of protection required by the claims of the present invention.

[0028] Example: Figure 1-7As shown, this embodiment provides a test device for accelerated storage life test and in-situ detection of deformation of firearm springs. Specifically, it is a spring temperature-stress coordinated loading test device. It includes a box body, which is a cabinet structure and is composed of a frame and a panel. The box body is divided from top to bottom into an upper mechanical stress loading area 100, a middle temperature stress loading area 200 and a lower deformation data real-time acquisition area 300. A stress loading device is arranged in the mechanical stress loading area, a spring fixture is arranged in the temperature stress loading area, the stress loading device acts on the spring fixture, a to-be-detected piece that is displaced with the spring fixture is connected to the lower part of the spring fixture, the to-be-detected piece freely extends into the deformation data real-time acquisition area, and a detection system for detecting the displacement detected by the detection piece is arranged in the deformation data real-time acquisition area; and a temperature control system is arranged in the temperature stress loading area. The stress loading device set in the mechanical stress loading area applies stress to the spring in the temperature stress loading area to deform the spring, thereby causing the to-be-detected part to move synchronously with the spring, so that the detection system in the real-time data acquisition area detects the displacement of the to-be-detected part and outputs it in real time, thus realizing in-situ detection of the deformation of the firearm spring. In addition, the temperature control system in the temperature stress loading area heats up the spring environment, and at the same time coordinates the stress loading to conduct an accelerated storage life test of the firearm spring.

[0029] In this embodiment, the cabinet of the spring temperature-stress collaborative loading test device includes a rectangular load-bearing frame, which is welded with 40X40mm rectangular galvanized steel pipes, and transverse frames are welded in the upper and middle and lower parts of the rectangular frame, forming the skeleton of the upper mechanical stress loading area 100, the skeleton of the middle temperature stress loading area 200 and the skeleton of the lower deformation data real-time acquisition area 300.

[0030] The skeleton material of the mechanical stress loading area can also be 3030 aluminum alloy profile with a wall thickness of ≥2mm. In this embodiment, a plate is inlaid in the skeleton of the mechanical stress loading area to form a box. Among them, the rear wall, top plate and bottom plate are all made of aluminum alloy plates, and the surface is anodized. The thickness of the rear wall and top plate is ≥1mm, and the thickness of the bottom plate is ≥2mm. The bottom plate should adopt a reinforcing rib load-bearing mechanism: not less than 100Kg / ㎡ (uniform load), no deformation, and a weight storage place should be set on the bottom plate, with a total weight of weights: 50kg. The front wall, left wall and right wall of the box are open door structures, and the front wall adopts a double door structure. The front wall, left wall and right wall are all made of transparent plexiglass directly inlaid on the aluminum alloy profile frame, with a thickness of ≥1mm. And each door is equipped with a handle and a tightening mechanism.

[0031] In addition, the stress loading device in the mechanical stress loading area adopts a pulley assembly, which includes a fixed pulley block 101, a movable pulley block 102 and a weight loading part 103, and a hanging ring 104 is provided at the end of the movable pulley block, and the hook is used to connect with the spring tooling in the temperature stress loading area. The pulley assembly includes at least three movable pulleys and three fixed pulleys, and the pulley material is made of steel material. The pulley block can bear a load greater than 50kg without deformation.

[0032] The middle stress loading zone includes a cavity composed of a skeleton and a plate body, and the top surface, bottom surface and three side walls of the box body in the temperature stress loading zone are insulated, including an inner wall, an outer wall and an intermediate insulation layer, and the other side wall is a ventilation panel 201 and is provided with a vent. The inner wall is made of 304 stainless steel plate with a wall thickness of ≥1mm. The outer wall is made of galvanized cold-rolled steel plate and the surface is sprayed with plastic. The interlayer is an intermediate insulation layer of rigid polyurethane foam or glass wool with a thickness of ≥100mm. When the temperature inside the cavity is 200℃, the temperature difference between the outer surface of the box and the room temperature is not more than 5℃. The top and bottom plates of the cavity have a load-bearing capacity of not less than 100Kg / ㎡ (uniform load), and the inner tank is welded. The cavity in the temperature stress loading zone is provided with a door, and the door frame is sealed with a silicone rubber sealing strip. In addition, a temperature control system is provided in the cavity of the temperature stress loading zone.

[0033] Wherein, the temperature control system is a hot air circulation system arranged in the temperature stress loading area, and the hot air circulation system includes a motor, a heating pipe and a fan blade, and the power of the heating pipe is ≥750W. The fan blade is made of 304 stainless steel. The air circulation system adopts a single air duct structure. The motor adopts a high temperature resistant AC motor. The temperature control system also includes a temperature sensor, and an adjustable temperature adjustment panel and a display panel that can display the temperature are arranged outside the cabinet of the test device. The temperature in the temperature stress loading area is detected in real time by a sensor, and the temperature is adjusted by adjusting the motor.

[0034] In this embodiment, the bottom plate of the mechanical stress loading zone and the middle insulation layer and inner wall of the temperature stress loading zone constitute the top wall of the temperature stress loading zone, that is, the top wall forms an upper partition 202 for separating the mechanical stress loading zone from the temperature stress loading zone. A stress loading through hole 203 is provided on the top wall of the temperature stress loading zone, and the spring fixture includes a mounting rod 204, the mounting rod part passes through the stress loading through hole and is connected to the stress loading device, an upper blocking plate 205 is fixedly provided at the bottom of the stress loading through hole, a mounting rod through hole is provided on the upper blocking plate, and a lower blocking plate 206 fixedly connected to the mounting rod is provided at the bottom of the mounting rod. The spring 400 to be tested is sleeved on the mounting rod and is located between the upper blocking plate and the lower blocking plate.

[0035] In this embodiment, the top of the stress loading through hole is fixedly connected with an upper cover plate 207 by screws, a through hole is provided in the middle of the upper cover plate, and the bottom of the stress loading through hole is fixedly connected with a lower cover plate 208 by screws. The middle of the lower cover plate is a bowl-shaped 209 protruding downward, a through hole is provided in the middle of the bowl, and the bottom wall of the bowl is fixedly welded or screwed to the upper blocking plate 205. The mounting rod can pass through the upper blocking plate, the lower cover plate, the partition plate, and the upper cover plate and move freely upward or downward. The top end of the mounting rod is connected to the pulley assembly through a connector 105. Specifically: a hanging ring 104 is provided at the end of the pulley assembly. The connector includes a rigid connector body 151, a hook 152 is provided on the top of the rigid connector body, a screw is fixedly connected to the bottom of the hook and is screwed to the top of the rigid connector body, and the hook is connected to the hanging ring; a lower hanging ring 153 is provided on the bottom of the rigid connector body, a screw is fixedly connected to the top of the hanging ring and is screwed to the bottom of the rigid connector body, the lower hanging ring is inserted into the top opening 241 of the mounting rod, and the opening is locked by a pin 242 to achieve the connection between the lower hanging ring and the mounting rod.

[0036] The bottom of the mounting rod is connected to the lower baffle plate via a screw 210, the screw is provided with a central axis hole, a detection rope 211 is inserted into the central axis hole and fixedly connected to the screw via a pin 212, the detection rope freely vertically downward and passes through a detection through hole provided in the middle of the bottom plate of the temperature stress loading area and is connected to the object to be detected. In this embodiment, the object to be detected is a panel 213.

[0037] The deformation data real-time acquisition area includes a frame and side plates. The left, right and rear sides of the frame are closed with galvanized steel plates with a wall thickness of ≥1mm, and the surface is sprayed with plastic. The bottom plate adopts a reinforcing rib structure, and is paved with stainless steel with a wall thickness of ≥1mm. The bottom can bear a load of 30kg without deformation. The front of the frame is set as a double-door structure, which is closed with galvanized steel plates with a wall thickness of ≥1mm, and the surface is sprayed with plastic. The top plate of the deformation data real-time acquisition area and the middle insulation layer and inner wall of the temperature stress loading area together constitute the lower partition 214. A detection hole 215 is provided in the middle of the lower partition, and the detection rope passes through the detection hole and is connected to the panel to be detected located in the deformation data real-time acquisition area.

[0038] In addition, a detection system is provided in the lower box body, and the detection system includes a surface laser displacement sensor. The detection system also includes a computer. The computer is connected to the controller via a standard serial port, and the controller is connected to the surface laser displacement sensor. The controller is connected to a power supply. The computer is also connected to the power supply via a standard serial port and a dual-channel relay module. A data processing and data storage module is provided in the computer, and the computer has a display screen capable of displaying and exporting.

[0039] The surface laser sensor in this embodiment adopts the Japanese KEYENCE sensor LS-7030, the controller adopts the Japanese KEYENCE measurement controller LS-7001, and the dual-channel relay module adopts the Omron relay.

[0040] In the internal circuit of the relay module shown, the LM2596 chip is used to power the module. It contains a fixed frequency oscillator (150KHz) and a reference voltage regulator (1.23V), and has a complete protection circuit, current limit, temperature protection circuit, etc. The chip only needs a few peripheral devices to form an efficient voltage stabilization circuit. In addition, the power supply part is installed on an independent small board, which is completely isolated from the main board to eliminate interference and ensure performance. On the right side of the main board, the interface between the module and the outside is also designed with a PCB board slot, so that each switch can be completely separated to avoid PCB breakdown due to excessive voltage. The entire PCB surface is sprayed with three anti-paints, which can effectively prevent moisture, corrosion, and leakage, thereby extending the service life of the entire module.

[0041] In this embodiment, the Japanese KEYENCE sensor LS-7030 is used, and based on the principle of light transmission, the deformation and life of the spring of the firearm with long time width and small change are detected. The light source uses a high-brightness gallium nitride (GaN) green LED as the system light source, and the light path design at the light source end is as follows: the output light of the LED light source first passes through a special scattering device (HUD unit), and the narrow diameter light beam becomes a beam of uniform diffuse light, which is irradiated onto the standard mirror; a scattering device and a standard lens are used to form a collimated light path system, and the output light beam width can be adjusted by adjusting the scattering device, and the scattering device is adjusted so that the output light beam covers the entire measured area. The optical path at the receiving end involves: a telecentric optical system set at the rear end of the object to be measured, an HL-CDD sensor set at the rear end of the telecentric optical system, and a receiver set at the rear end of the HL-CDD sensor.

[0042] The controller LS-7001 in this embodiment integrates two dedicated chips in its circuit, one is a dual-core high-speed calculation CPU (HT processor), and the other is a dedicated DSP. Image preprocessing, contour search, compensation correction, edge detection and other processing functions are implemented in the DSP, and the pixel value of the corresponding size is extracted according to the obtained contour in the calculation CPU, and the measurement value of the corresponding size is calculated according to the sensor calibration parameters and the optical system magnification, which simplifies the processing complexity of the upper computer software. With the high-speed sampling of the sensor, the fastest sampling trigger interval of 33ms can be achieved, which far exceeds the measurement speed requirement in the actual creep effect measurement.

[0043] Specifically, the measurement method in this embodiment is as follows: after the light emitted by the high-intensity GaN green LED becomes consistent parallel light, it passes through a special diffusion device and a collimating lens and then is directed to the target. Through the telecentric optical system, a shadow image of the target is accurately formed in the HL (high-speed linear)-CCD. By using the result calculated by the DE processor (digital edge detection processor) and the CPU for the signal sent by the HL-CCD, the target size is displayed and output using the high-precision CCD method. The special diffusion device is combined with a highly reliable gallium nitride green LED with a short wavelength function. This combination can emit ideal and consistent illumination light to the target to be measured, and the high-precision image in the CCD ensures high reproducibility. In the telecentric optical system, since unnecessary light is removed and only a parallel light image is formed, the lens magnification is not affected by position changes, and the telecentric optical system can achieve high-precision measurement. The HL-CCD that is often exposed to light can be used for measurement, and the HL-CCD can achieve ultra-high-speed sampling. The measurement is performed based on the average value of the number of exposures, and any temporary changes cannot be missed. Through digital signal processing, the edge of the target image formed in the HL-CCD can be detected (edge ​​detection). The above edge detection is hardly affected by changes in light intensity caused by dirt or dust on the lens. In addition, by changing the HL-CCD sensitivity threshold, transparent objects can be detected.

[0044] Therefore, a small deformation test method based on the high-precision surface laser test sensor LS-7030 of Keyence Corporation of Japan is adopted for measurement, which has high accuracy and test effect to meet the displacement test requirements of small deformation of springs.

[0045] In summary, the spring temperature-stress collaborative loading test device of this embodiment can be used to perform high-precision in-situ displacement measurements on the elastic coefficient K and constant force strain of the firearm spring component. First, the spring to be tested is installed in the temperature stress loading area in the middle of this test device, and then the spring fixture is pressure-loaded using the pulley group in the mechanical stress loading area. The pressure is transmitted to the test spring through the fixture to achieve constant force loading. At the same time, the deformation of the spring is transmitted to the panel to be tested, forming the displacement of the panel to be tested. The non-contact laser testing technology of the Japanese KEYENCE sensor LS-7030 is used. The sensor is installed in the real-time deformation data collection area to detect the deformation data of the tested spring under constant stress in real time and in situ. At the same time, according to the control of the spring test temperature in the temperature stress loading area and the loading of the coordinated stress, the accelerated storage life test of the tested spring is achieved.

[0046] like Figure 7 The figure shows the overall block diagram of the creep effect automatic measurement system. The computer serves as the control center and data center to maintain the normal operation of the entire system. When measurement is required, the computer first sends a command to the relay module to close the switch and connect the power to the LS-7001 controller. When the controller power is turned on, the sensor light source is also lit. When it is ready, measurement can be carried out.

[0047] After the controller and sensor are ready, the part to be tested is placed between the LED light source and the CCD sensor, and the controller will immediately show the measured value. At this time, the computer can send a command to read the data of a certain channel to the controller, delay for a short period of time, and prepare to receive data. After the controller receives the command, during the short period of computer delay, it first determines the function of the command, and then organizes the data to be returned in a standard format according to the function, and finally packages the data and returns it to the computer through the serial port.

[0048] After the computer delay is completed, it enters the data receiving state, and at this time, it just encounters the data returned by the controller. After receiving the data through the serial port, the computer processes the original value of the data (removes the frame header and frame tail, extracts useful information, etc.), transfers the processed data to the error analysis process, stores the data that meets the requirements in the database, and displays it in the list and line chart. Finally, as needed, the data can be exported in the form of an Excel table for more detailed and in-depth analysis.

[0049] The main indicators of the experimental device in this embodiment are shown in Table 1:

[0050] Table 1 Main technical indicators of spring temperature-stress coordinated loading test device

[0051]

[0052]

[0053] The experimental device in this embodiment should be able to work stably for a long time in the following environment:

[0054] Power supply voltage: 220V±10%, single phase / three phase;

[0055] Power frequency: 50Hz±3Hz;

[0056] Ambient temperature: 5℃~40℃;

[0057] Ambient relative humidity: 20%~85%.

Claims

1. A spring temperature-stress coordinated loading test device, comprising a box, wherein the box is divided from top to bottom into an upper mechanical stress loading area, a middle temperature stress loading area, and a lower deformation data real-time collection area; A stress loading device is provided in the mechanical stress loading area, a spring fixture is provided in the temperature stress loading area, the stress loading device acts on the spring fixture, a to-be-detected piece that is displaced along with the spring fixture is connected to the lower part of the spring fixture, the to-be-detected piece freely extends into the deformation data real-time acquisition area, and a detection system for detecting the displacement of the to-be-detected piece is provided in the deformation data real-time acquisition area; a temperature control system is provided in the temperature stress loading area; in, An upper partition is provided between the mechanical stress loading area and the temperature stress loading area, a stress loading through hole is provided in the middle of the upper partition, the spring fixture comprises a mounting rod, the mounting rod part passes through the stress loading through hole and is connected to the stress loading device, an upper blocking plate is provided at the bottom of the stress loading through hole, a mounting rod through hole is provided on the upper blocking plate, a lower blocking plate fixedly connected to the mounting rod is provided at the bottom of the mounting rod, and the tested spring is sleeved on the mounting rod and is located between the upper blocking plate and the lower blocking plate; The stress loading device is a pulley assembly, which includes a fixed pulley block, a movable pulley block and a weight loading part; a hanging ring is provided at the end of the pulley assembly, and the hanging ring is connected to the head of the mounting rod through a connecting piece; A lower baffle is provided between the temperature stress loading area and the deformation data real-time acquisition area, a detection hole is provided in the middle of the lower baffle, the bottom of the mounting rod is connected to the lower baffle through a screw, the screw is provided with a central axis hole, a detection rope is inserted into the central axis hole and fixedly connected to the screw through a pin, the detection rope is freely vertical downward and passes through the detection hole to be connected to the object to be detected; The part to be detected is a panel, the detection system includes a surface laser displacement sensor, and the detection system also includes a computer. The computer is connected to a controller via a standard serial port, the controller is connected to the surface laser displacement sensor, the controller is connected to a power supply, and the computer is also connected to the power supply via a standard serial port and a dual-channel relay module. A data processing and data storage module is provided in the computer, and the computer has a display screen capable of displaying and exporting.

2. The spring temperature-stress coordinated loading test device according to claim 1, characterized in that: The connector includes a rigid connector body, a hook is provided on the top of the rigid connector body, a screw is provided at the bottom of the hook and is screwed to the top of the rigid connector body, and the hook is connected to the hanging ring; a lower hanging ring is provided at the bottom of the rigid connector body, a screw is provided at the top of the lower hanging ring and is screwed to the bottom of the rigid connector body, the lower hanging ring is inserted into the top opening of the mounting rod, and the opening is locked by a pin to realize the connection between the lower hanging ring and the mounting rod.

3. The spring temperature-stress coordinated loading test device according to claim 1 or 2, characterized in that: It includes a rectangular load-bearing frame, the upper part of the load-bearing frame is a mechanical stress loading area skeleton, and a box and a door are arranged in the mechanical stress loading area skeleton, the middle part of the load-bearing frame is a temperature stress loading area skeleton, and a box and a door are arranged in the temperature stress loading area skeleton, and the lower part of the load-bearing frame is a deformation data real-time collection area skeleton, and a box and a door are arranged in the deformation data real-time collection area skeleton.

4. The spring temperature-stress coordinated loading test device according to claim 3, characterized in that: The skeleton material of the mechanical stress loading area is 3030 aluminum alloy profile, and the wall thickness is ≥2mm; the rear wall and top plate of the box in the mechanical stress loading area are made of aluminum alloy plate with a thickness of ≥1mm, and the bottom plate is made of aluminum alloy plate with a thickness of ≥2mm, and a reinforcing rib load-bearing structure is arranged on the bottom plate; the front wall, left wall and right wall of the box in the mechanical stress loading area are all open door structures, and the front wall adopts a double-door structure, and each door adopts an aluminum alloy profile inlaid with organic glass structure, and the thickness of the organic glass is ≥1mm.

5. The spring temperature-stress coordinated loading test device according to claim 3, characterized in that: The top surface, bottom surface and three side surfaces of the box body in the temperature stress loading zone are insulated, including an inner wall, an outer wall and an intermediate insulation layer. The inner wall is made of 304 stainless steel with a thickness of ≥1mm, the outer wall is made of galvanized cold-rolled steel plate, and the intermediate insulation layer is hard polyurethane foam or glass wool with a thickness of ≥100mm; the other side of the box body in the temperature stress loading zone is a ventilation panel with ventilation holes arranged thereon, and a heating bellows is also arranged in the box body in the temperature stress loading zone.

6. The spring temperature-stress coordinated loading test device according to claim 3, characterized in that: The skeleton of the deformation data real-time collection area is welded with rectangular galvanized steel pipes, and the thickness of the pipe wall is ≥1mm. The side walls of the box of the deformation data real-time collection area are closed with galvanized steel plates with a thickness of ≥1mm, and a double door structure is arranged on one side. The bottom plate of the box of the deformation data real-time collection area is made of stainless steel with a thickness of ≥1mm, and a reinforcing rib structure is arranged.

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