A mechanism force-thermal coupling test device

Abstract

The application discloses a kind of adjusting mechanism force thermal coupling test device.The test device of the application includes fixture support system, adjustable loading system, heating system and data measurement system;Fixture support system is used to realize the multi-degree-of-freedom constraint and positioning of test piece, so that the test piece can move on the fixture according to the actual use working condition;Adjustable loading system applies concentrated static load through actuator and lever mechanism, while maintaining the loading direction perpendicular to the surface of the adjusting plate during movement;The heating system adopts quartz lamp radiation heating method, which can heat the front of the test piece to the set temperature;The data measurement system includes temperature and mechanical data acquisition device.The application truly simulates the working state of the adjusting mechanism under the coupling condition of high temperature and load, and comprehensively examines its motion performance and structural integrity, providing reliable technical support for the design optimization and engineering application of high-temperature moving mechanism.

Description

Technical Field

[0001] This invention relates to the field of reliability testing equipment technology, and more specifically, to a force-thermal coupling testing device for adjusting mechanisms. Background Technology

[0002] Adjustment plates and mechanisms are key functional components for motion control and structural adjustment in high-temperature environments in aerospace and other fields. Their performance directly affects the reliability and operational accuracy of the system under high-temperature, high-load coupled conditions. In actual service, these mechanisms are often exposed to high temperatures and must perform precise motion adjustments while bearing static loads. Therefore, extremely high requirements are placed on their anti-jamming ability, structural stability, and motion reliability under high-temperature conditions. To realistically simulate the working behavior of the adjustment mechanism under high-temperature load conditions, motion tests under force-thermal coupling conditions are necessary to verify whether its adjustment function is normal under set temperature and load conditions, and whether there are any jamming or abnormal thrust phenomena. This allows for the evaluation of its applicability and durability under actual high-temperature conditions.

[0003] However, current testing devices and methods for such high-temperature motion mechanisms are still not mature enough. Existing testing systems often struggle to achieve simultaneous control of force-thermal coupling loading and motion adjustment under high-temperature environments, lack the ability to comprehensively verify the performance of multi-degree-of-freedom motion mechanisms under the combined effects of thermal deformation and mechanical loads, and cannot accurately reproduce their dynamic behavior and potential failure modes under actual high-temperature conditions. Therefore, to systematically evaluate the motion reliability, anti-jamming performance, and structural integrity of the adjustment plate and adjustment mechanism under high-temperature load conditions, it is urgent to develop a comprehensive testing device and supporting testing methods that can integrate high-temperature heating, static loading, and motion adjustment, providing reliable data support and verification means for their design optimization and engineering applications.

[0004] In the existing technology, there is a lack of mature dedicated test equipment for force-thermal coupling tests of adjustment plates or adjustment mechanisms in high-temperature environments. It is difficult to truly simulate their motion behavior under high-temperature load conditions and cannot effectively verify the mechanism's anti-jamming ability, structural stability and motion reliability under high-temperature conditions. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to overcome the shortcomings of the existing technology and provide a comprehensive test device and supporting test method that can integrate high temperature heating, static loading and motion adjustment. This device can realistically simulate the working state of the adjustment mechanism under high temperature and load coupling conditions, and comprehensively evaluate its motion performance and structural integrity, thus providing reliable technical support for the design optimization and engineering application of high temperature motion mechanisms.

[0006] The present invention provides a force-thermal coupling test device for adjusting mechanism, which is achieved through the following technical solution. The device includes: a clamp support system, an adjustable loading system, a heating system, and a data measurement system.

[0007] The clamp support system includes: a reaction force bracket, a front adjustment plate fixing bracket, a rear adjustment plate track fixing bracket, and an adjustment mechanism;

[0008] The reaction support consists of a transverse reaction beam and a longitudinal beam structure connected by high-strength pins. A rear slide rail device, consisting of a rear guide rail and a rear slider, is installed inside the transverse reaction beam. The rear slider is connected to the rear adjusting plate loading actuator via a pin fork. A front slide rail device, consisting of a front guide rail and a front slider, is installed at the top of the transverse reaction beam. The front slider is connected to the front adjusting plate loading actuator via a pin fork. The front and rear adjusting plate slide control actuators are electric servo actuators. The front adjusting plate slide control actuator drives the front slider, and the rear adjusting plate slide control actuator drives the rear slider.

[0009] The adjustment mechanism is divided into a front adjustment plate and a rear adjustment plate. The front adjustment plate has two front fixed ends. The front adjustment plate fixing bracket consists of two side legs and an upper crossbeam. The tops of the two front fixed ends are fixed to the bottom surface of the upper crossbeam. The bases of the two side legs are fixed to the platform base plate. The front adjustment plate has one fixed end connected to the front adjustment plate loading actuator. The movement of the mechanism is achieved by controlling the front adjustment plate loading actuator.

[0010] Two rear adjustment plate track fixing brackets are located on both sides of the rear adjustment plate. A fixed track is fixed on the inner side of each rear adjustment plate track fixing bracket. Two rear fixed ends of sliding joints are fixed on both sides of the rear adjustment plate. Each sliding joint is embedded in the adjacent fixed track. The base of the rear adjustment plate track fixing bracket is fixed on the platform base plate.

[0011] The adjustable loading system includes: one front adjustment plate loading actuator, two rear adjustment plate loading actuators, one adjustment plate motion control actuator, one front adjustment plate slide control actuator, and one rear adjustment plate slide control actuator; all actuators are driven by servo electric or hydraulic power, and each actuator has a built-in force sensor and displacement sensor.

[0012] The adjustment plate motion control actuator: one end of the adjustment plate motion control actuator is connected to the fixed end of the front adjustment plate loading actuator through a universal joint, and the other end is fixed to the transverse beam of the reaction support through a pin fork lug;

[0013] The front and rear adjustment plate slide control actuators are respectively installed on the corresponding sliders of the front and rear slide rail devices. The actuator cylinder is fixed to the slider by a pin, and the piston rod is connected to the reaction bracket by a pin fork.

[0014] The front and rear adjusting plate loading actuators are as follows: one end of the front adjusting plate loading actuator is mounted on the front slider, and one end of the two rear adjusting plate loading actuators is mounted on the rear slider; the other ends of the front and rear adjusting plate loading actuators are connected to the lugs on the front and rear adjusting plates respectively via steel wire ropes through the front and rear lever systems; the front adjusting plate has 4 load loading points (lug positions), distributed at the 1 / 4 and 3 / 4 positions of the plate, and the 4 loads are combined into 1 concentrated loading point through the front lever system, and then connected to the front adjusting plate loading actuator through a pin; the rear adjusting plate also has 4 loading points (lug positions), which are combined into 2 concentrated loading points through the rear lever system, and are respectively connected to the two rear adjusting plate loading actuators;

[0015] The front lever system includes a front lever and a rear lever. The centers of the front lever and the rear lever are movably connected to the other end of the front adjusting plate loading actuator through pins. The two ends of the front lever and the rear lever are fixed to corresponding lugs fixed on the front adjusting plate through steel wire ropes.

[0016] The rear lever system includes a front crossbar and a rear crossbar. The centers of the front crossbar and the rear crossbar are movably connected to the other end of the adjacent rear adjustment plate loading actuator, and the two ends of the front crossbar and the rear crossbar are fixed to the corresponding lugs fixed on the rear adjustment plate by steel wire ropes.

[0017] The heating system includes: quartz lamps, lamp supports, and C-shaped clamps. Multiple quartz lamps are evenly distributed on the back of the front and rear adjustment plates. The lamp supports on the back of the front and rear adjustment plates are each fixed to the back of the adjustment plate by four C-shaped clamps with bolts. Insulating material is placed between the clamps and the adjustment plates to prevent thermal short circuits. The lamp supports are designed as a follow-up structure; that is, the lamp supports and the adjustment mechanism are integrated, and the lamp supports move along with the adjustment mechanism. Multiple thermocouples are attached to the surfaces of the front and rear adjustment plates. The thermocouple wires are connected to a temperature acquisition instrument via high-temperature cables. The temperature acquisition instrument supports multi-channel data acquisition and transmits signals to a computer data acquisition system. The system adjusts the power of the quartz lamps according to the set temperature curve using a PID controller to achieve temperature control (control range from room temperature to 800℃).

[0018] The data measurement system includes: a K-type thermocouple, a temperature acquisition instrument, and a computer data acquisition system; the K-type thermocouple is arranged at the center of the front and rear of the adjustment plate, and is connected to the temperature acquisition instrument; the computer data acquisition system is connected to the temperature acquisition instrument and the force sensor on the loading actuator.

[0019] The data measurement system has load, displacement and temperature monitoring functions; load data is collected by the force sensor on the loading actuator, and temperature data is obtained by the K-type thermocouple through the temperature acquisition instrument; the system displays the load-time curve and temperature-time curve in real time, and sets alarm thresholds. When the data exceeds the allowable range, the actuator output or heating power is automatically adjusted.

[0020] Compared with the prior art, the beneficial effects of the present invention are:

[0021] This invention constructs a synchronous test environment with multi-field coupling of force, heat, and motion. It innovatively integrates a mechanical load application system, a high-energy thermal radiation system, and a multi-degree-of-freedom motion system onto a single test platform, enabling simultaneous and precise multi-physics field assessment of the mechanical load, thermal environment, and structural motion of the adjustment mechanism under simulated real-world conditions. This achieves high-fidelity simulation and efficient verification of complex operating conditions. The integrated test environment overcomes the limitations of traditional test equipment, which can only assess a single force load or temperature field. It can simultaneously apply tensile loads, high-temperature radiation, and adjustment plate motion, greatly improving the realism and efficiency of the test. The test results can profoundly reveal the stress distribution, deformation behavior, and potential thermal fatigue problems of the adjustment plate under force-thermal coupling. In particular, it can expose structural failures caused by mismatched thermal expansion coefficients of materials and stress concentration at connection points, providing crucial data support for the reliability design of products under extreme conditions.

[0022] This invention designs a precise load transfer mechanism based on a lever system and an adaptive slide rail. Addressing the complex stress characteristics of multiple loading points on the adjusting plate, a lever system is innovatively used to merge multiple discrete loading points of the front / rear adjusting plate into a concentrated load. Combined with a dynamically adjustable slide rail device, this ensures that the force direction of the loading actuator remains perpendicular throughout the movement of the adjusting plate, solving the problem of additional bending moment caused by loading angle deviations. This significantly improves the accuracy of load application and the reliability of test results. The load transfer and guiding mechanism effectively eliminates the interference of non-axial forces on the test results, ensuring that the load applied to the adjusting plate is purely tensile, highly consistent with the design stress state. The resulting stress-strain data and fatigue life are more accurate and reliable, enabling precise assessment of the structural integrity of the adjusting plate and providing high-quality experimental evidence for optimizing its force transmission path and lightweight design.

[0023] This invention achieves intelligent coordination and follow-up control of force-thermal loads: Employing an integrated computer data acquisition and control system, and utilizing real-time feedback from force sensors and K-type thermocouples, a dual closed-loop control strategy for load and temperature is constructed. This system can not only independently and precisely control the loads of each actuator and the temperature of the quartz lamp, but also achieve intelligent coordination and synchronous follow-up of mechanical loading and thermal radiation loading based on a preset force-thermal coupling spectrum, ensuring the stability and accurate reproduction of the force-thermal environment during the movement of the regulating plate. It ensures high consistency and data repeatability in the coupled test process: This intelligent coordination and control system can compensate in real-time for the impact of changes in material properties and structural thermal deformation on the load caused by temperature variations, ensuring that the force and temperature loads in each test cycle are strictly executed according to the preset program. This greatly reduces uncertainties in the test process, resulting in excellent repeatability and comparability of the obtained force-thermal coupling performance data, laying a solid technical foundation for establishing accurate product life prediction models and analyzing performance degradation patterns. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall device;

[0025] Figure 2 This is a schematic diagram of the product adjustment plate;

[0026] Figure 3 This is a schematic diagram of the clamp support system;

[0027] Figure 4a This is a schematic diagram of an adjustable loading system;

[0028] Figure 4b This is an enlarged schematic diagram of the front and rear adjustment plate loading actuators in an adjustable loading system.

[0029] Figure 5 This is a schematic diagram of the heating system;

[0030] Figure 6 This is a schematic diagram of a data measurement system;

[0031] Figure 7 This is a schematic diagram of the front and rear slide rail devices. Detailed Implementation

[0032] To better understand the above-mentioned objects, features, and advantages of the present invention, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. The described embodiments are merely some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this invention pertains. The terminology used herein is for the purpose of describing specific embodiments only and is not intended to limit the present invention.

[0033] The device of the present invention includes: a clamp support system, an adjustable loading system, a heating system, and a data measurement system;

[0034] The fixture support system includes: a reaction support 4, a front adjustment plate fixing support 2, a rear adjustment plate track fixing support 3, and an adjustment mechanism 1. The device achieves reliable support for the test piece through five fixed positions: the two ends of the front adjustment plate rotating shaft, the fixed end of the actuator, and the two fixed slide rails of the rear adjustment plate. This ensures that the structure can move according to the actual usage conditions during the test and guarantees that the structure moves stably without loosening.

[0035] The reaction support 4 is composed of a transverse reaction beam and a longitudinal beam structure connected by a high-strength pin. A rear slide rail device consisting of a rear guide rail and a rear slider is installed on the inner side of the transverse reaction beam. The rear slider is connected to the rear adjustment plate loading actuator through a pin fork. A front slide rail device consisting of a front guide rail and a front slider is installed at the top of the transverse reaction beam. The front slider is connected to the front adjustment plate loading actuator through a pin fork. The front and rear adjustment plate slide control actuators are electric servo actuators. The front adjustment plate slide control actuator drives the front slider, and the rear adjustment plate slide control actuator drives the rear slider.

[0036] The adjustment mechanism 1 is divided into a front adjustment plate and a rear adjustment plate. The front adjustment plate 101 has two front fixed ends 103. The front adjustment plate fixed bracket 2 consists of two side legs and an upper crossbeam. The tops of the two front fixed ends 103 are fixed to the bottom surface of the upper crossbeam. The bases of the side legs are fixed to the platform base plate. The front adjustment plate 101 has one fixed end 104 connected to the front adjustment plate loading actuator. The movement of the mechanism is realized by controlling the front adjustment plate loading actuator.

[0037] Two rear adjustment plate track fixing brackets 3 are located on both sides of the rear adjustment plate 102. A fixed track 201 is fixed on the inner side of each rear adjustment plate track fixing bracket. Two rear fixed ends 105 of sliding joints are fixed on both sides of the rear adjustment plate 102. Each sliding joint is embedded in the adjacent fixed track 201. The base of the rear adjustment plate track fixing bracket 3 is fixed on the platform base plate.

[0038] The second component is an adjustable loading system, comprising: one front adjusting plate loading actuator 5, two rear adjusting plate loading actuators 6, one adjusting plate motion control actuator 7, one front adjusting plate slide control actuator 8, and one rear adjusting plate slide control actuator 9. All actuators are servo-driven electric or hydraulically operated, and each actuator has a built-in force sensor 17 and displacement sensor 18. These actuators are used to apply a specified static load to the adjusting plate during the test and to maintain the loading direction perpendicular to the adjusting plate surface throughout the movement. The device utilizes the loading actuators as a power source, combining multiple loading points into a centralized loading point through a lever system, and then achieving follow-up loading through a slide rail system, ensuring that the loading direction does not change with the movement of the mechanism. Force sensors are installed at the actuators to monitor the magnitude of the loading force and the change in actuator thrust in real time to evaluate the motion state of the mechanism.

[0039] The adjustment plate motion control actuator: one end of the adjustment plate motion control actuator is connected to the fixed end 104 of the front adjustment plate loading actuator through a universal joint, and the other end is fixed to the adjacent reaction support transverse beam through a pin fork lug.

[0040] The front and rear adjustment plate slide control actuators are respectively installed on the corresponding sliders of the front and rear slide rail devices. The actuator cylinder is fixed to the slider by a pin, and the piston rod is connected to the reaction bracket by a pin fork.

[0041] The front and rear adjusting plate loading actuators are as follows: one end of the front adjusting plate loading actuator 5 is mounted on the front slider 23, and one end of the two rear adjusting plate loading actuators is mounted on the rear slider 21. The other ends of the front and rear adjusting plate loading actuators are connected to the lugs on the front and rear adjusting plates via steel wire ropes 27 through the front lever system 11 and the rear lever system 28, respectively. The front adjusting plate has four load loading points (lug positions), distributed at the 1 / 4 and 3 / 4 positions of the plate. The four load points are combined into one concentrated loading point through the front lever system 11, and then connected to the front adjusting plate loading actuator through a pin. The rear adjusting plate also has four loading points (lug positions), which are combined into two concentrated loading points through the rear lever system 28, and are respectively connected to the two rear adjusting plate loading actuators.

[0042] The front lever system 11 includes a front lever 301 and a rear lever 302. The centers of the front lever and the rear lever are movably connected to the other end of the front adjusting plate loading actuator through pins. The two ends of the front lever and the rear lever are fixed to corresponding lugs fixed on the front adjusting plate through steel wire ropes.

[0043] The rear lever system 28 includes a front crossbar 303 and a rear crossbar 304. The centers of the front crossbar and the rear crossbar are movably connected to the other end of the adjacent rear adjustment plate loading actuator, and the two ends of the front crossbar and the rear crossbar are fixed to the corresponding lugs fixed on the rear adjustment plate by steel wire ropes.

[0044] Thirdly, there is a heating system used to radiate heat the regulating plate at high temperatures, simulating a high-temperature operating environment. This system mainly includes: a quartz lamp, a lamp support, and C-shaped clamps. The device radiates heat to the front of the regulating plate using the quartz lamp, raising its temperature to the set value. The lamp support is fixed to the test piece by clamps, allowing for dynamic heating during movement and ensuring a stable and controllable temperature field.

[0045] Multiple quartz lamps 12 are evenly distributed on the back of the front and rear adjustment plates. Lamp holders 19 located on the back of the front and rear adjustment plates are each fixed to the back of the adjustment plate by four C-shaped clamps 13 using bolts. Insulating material is placed between the clamps and the adjustment plates to prevent thermal short circuits. Multiple thermocouples are attached to the surfaces of the front and rear adjustment plates. The thermocouple wires are connected to a temperature acquisition instrument via high-temperature cables. The temperature acquisition instrument supports multi-channel data acquisition and transmits signals to a computer data acquisition system. The system adjusts the power of the quartz lamps according to the set temperature curve using a PID controller to achieve temperature control (control range from room temperature to 800℃).

[0046] Fourth is the data measurement system, used to collect temperature and mechanical data in real time during the test to evaluate the reliability of the regulating mechanism under high-temperature load conditions. This system mainly includes: a type K thermocouple, a temperature acquisition instrument, and a computer data acquisition system. The thermocouples are positioned at the center of the front and rear of the regulating plate to monitor temperature changes in real time; force sensors monitor the actuator thrust. Combined with motion state data, a comprehensive analysis is conducted to determine if there is any jamming or abnormality in the mechanism, thus completing a comprehensive verification of the regulating mechanism's high-temperature motion reliability.

[0047] Figure 1 The diagram shows the overall device. The product adjustment plate is fixed to the front adjustment plate fixing bracket and the rear adjustment plate track fixing bracket, allowing the adjustment plate to move according to actual operating conditions. The overall reaction bracket is fixedly connected by a pin, and the actuator slide rail device is installed at the inner reaction bracket. This allows for real-time adjustment of the actuator slide rail device's slide plate position according to the adjustment plate's movement, ensuring that the actuator's loading direction is always perpendicular to the adjustment plate surface.

[0048] The reaction support system consists of transverse reaction beams and longitudinal beams connected by high-strength pins, forming a stable support frame. A slide rail device for the rear adjusting plate loading actuator is installed on the inner side of the transverse reaction beam, and a slide rail device for the front adjusting plate loading actuator is installed at the top of the transverse reaction beam. The front slide rail device 10 consists of a front guide rail 24 and a front slider 23, and the rear slide rail device 20 consists of a rear guide rail 22 and a rear slider 21. The front and rear sliders are connected to the front and rear adjusting plate slide control actuators via front pin fork lugs 25 and rear pin fork lugs 26, respectively (pin fork lug connection is a common connection method in mechanical structures, connecting the protruding fork-shaped lugs on the slider to the actuator via pins), and the slider position is adjusted by the front and rear adjusting plate slide control actuators. This ensures that the loading direction of the front and rear loading actuators is always perpendicular to the plane of the front and rear adjusting plates. During loading, the load magnitude is fed back in real time by a force sensor, and the displacement of the adjusting plate is monitored by a displacement sensor, achieving closed-loop control.

[0049] Figure 2 The diagram shows the product adjustment plate. The device has five fixed positions: a front fixed end 103 on the front adjustment plate, a fixed end 104 connected to the front adjustment plate loading actuator, and two rear fixed ends 105 on the rear adjustment plate for fixing the slide rails. After the four fixed points of the front and rear adjustment plates are installed, the adjustment plate can be moved along the slide rail trajectory by running the actuator. The adjustment mechanism is divided into a front adjustment plate and a rear adjustment plate. The front adjustment plate 101 has two front fixed ends 103 that are fixed to the front adjustment plate fixing bracket 2, and one fixed end 104 connected to the front adjustment plate loading actuator. The movement of the mechanism is achieved by controlling the front adjustment plate loading actuator. The rear adjustment plate 102 has two rear fixed ends 105 that are fixed to the two fixed slide rails on the rear adjustment plate track fixing bracket 3.

[0050] Figure 3 As a clamping support system, the front and rear adjustment plates are installed and fixed by the front adjustment plate fixing bracket 2 and the rear adjustment plate track fixing bracket 3. The inner side walls of the two symmetrically arranged rear adjustment plate track fixing brackets 3 are respectively provided with fixed rails 201 to provide movement space for the adjustment mechanism. The two rear adjustment plate track fixing brackets are fixed to the ground base plate to ensure the stability of the adjustment plate movement.

[0051] The front adjusting plate fixing bracket and the rear adjusting plate track fixing bracket are installed on the platform base plate using anchor bolts. The bracket surfaces are precision machined to ensure installation accuracy. The front adjusting plate is rigidly connected to the front adjusting plate fixing bracket via bolts, while the rear adjusting plate is embedded in the fixed track 201 of the rear adjusting plate track fixing bracket via a sliding joint, allowing the rear adjusting plate to slide freely along the track direction. During installation, a torque wrench is used to tighten the bolts to the specified torque to ensure reliable connection. After the adjusting plates are installed, their position must be calibrated. The relative position between the adjusting plates and the reaction support is verified using a laser rangefinder to ensure no interference with the test specimen during movement.

[0052] Figure 4a The adjustable loading system consists of six actuators. Two actuators control the position of the slide plate of the slide rail device, and adjust the position of the actuators in real time according to the movement state of the adjustment plate to ensure that the loading direction does not change with the movement of the mechanism. One actuator provides power input to the adjustment plate to ensure that the adjustment plate can move according to the actual working state. The three actuators provide a specified static load to the front and rear adjustment plates to test the mechanical characteristics of the adjustment plates.

[0053] All actuators are servo-driven electric or hydraulic, and have built-in force sensor 17 and displacement sensor 18.

[0054] a) Adjustment plate motion control actuator: One end of the actuator is connected to the center fixed point of the adjustment plate via a universal joint, and the other end is fixed to the reaction support beam via a pin fork lug. The reaction support is anchored to the platform base plate with M24 high-strength bolts. During the test, the reciprocating motion (extension / contraction) of the adjustment plate motion control actuator drives the overall movement of the adjustment plate, simulating the displacement load under actual working conditions. During the movement, the position of the adjustment plate is monitored in real time by a displacement sensor, and the actuator output is adjusted by the control system to ensure that the movement trajectory meets the test requirements.

[0055] b) Front and rear adjustment plate slide plate control actuators: These two actuators are respectively installed on the slide plates of the front and rear slide rail devices. The actuator cylinders are fixed to the slide plates by pins, and the piston rods are connected to the reaction brackets by pin forks. By controlling the extension of the actuators, the position of the slide plates on the guide rails is adjusted, thereby dynamically adjusting the loading angle of the front and rear loading actuators to ensure that the loading direction is always perpendicular to the surface of the adjustment plate.

[0056] c) Front and rear adjusting plate loading actuators: The front adjusting plate loading actuator is mounted on the front slide block, and the rear adjusting plate loading actuators (two in total) are mounted on the rear slide block. One end of the actuator is fixed to the slide plate, and the other end is connected to the lug on the adjusting plate via a lever system and a steel wire rope 27. Figure 4b (The eight lines in the diagram represent steel wire ropes). The front adjusting plate has four load application points, distributed at the 1 / 4 and 3 / 4 positions of the plate. A lever system combines these four load points into one concentrated loading point, which is then connected to the front adjusting plate loading actuator via a pin. The rear adjusting plate also has four loading points, which are combined into two concentrated loading points via the lever system, each connected to one of the two rear adjusting plate loading actuators. During the test, the actuators apply tensile loads, and a force sensor monitors the load magnitude in real time, adjusting the output force according to the test conditions. The lever system uses a hinged connection to reduce the influence of lateral forces and ensure accurate load transmission.

[0057] Figure 5As a heating system, the front and rear adjustment plates are heated by thermal radiation to their back sides through quartz lamp tubes 12. The quartz lamp tubes are installed on lamp tube brackets, and each of the two lamp tube brackets is fixed to the test piece by four C-type clamps and bolts, which can be used for follow-up heating during the movement of the test piece.

[0058] The heat loading system uses quartz lamps to radiate heat to the back of the regulating plate, and is divided into two areas: a front regulating plate and a rear regulating plate. The quartz lamps are arranged on lamp supports, and each area's lamp support is fixed to the back of the regulating plate by four C-shaped clamps bolted on. Insulating material is placed between the clamps and the regulating plate to prevent thermal short circuits. The lamp supports are designed as a follow-up structure, maintaining their relative position during the movement of the regulating plate to achieve continuous heat loading. Temperature monitoring uses K-type thermocouples. Multiple thermocouples are attached to key locations on the surface of the regulating plate according to experimental requirements. The thermocouple leads are connected to a temperature acquisition instrument via high-temperature cables. The temperature acquisition instrument supports multi-channel data acquisition, transmitting signals to a computer data acquisition system. The system adjusts the power of the quartz lamps according to the set temperature curve using a PID controller to achieve precise temperature control (control range from room temperature to 800℃). During the experiment, the temperature at each measuring point is displayed in real time, and the temperature-time history is recorded.

[0059] Figure 6 This is a schematic diagram of the data measurement system. The test load and temperature are monitored by thermocouples set at the adjustment plate and force sensors at the actuator. Temperature and mechanical data are collected in real time during the test to evaluate the working reliability of the adjustment mechanism under high temperature load environment.

[0060] The data control system 16 integrates load, displacement, and temperature monitoring functions, achieving centralized control through a computer data acquisition system. Load data is acquired by force sensors on the loading actuator, and temperature data is obtained by a K-type thermocouple 14 via a temperature acquisition instrument 15. The system displays load-time and temperature-time curves in real time and sets alarm thresholds. When data exceeds the allowable range, the system automatically adjusts the actuator output or heating power. During the test, the operator can input the load spectrum and temperature spectrum through the interface, and the system automatically executes multi-channel coordinated control to achieve force-thermal coupling loading. Data storage adopts a database format, supporting subsequent analysis and export.

[0061] The reaction support is welded from high-strength steel and fixed to the test platform with anchor bolts; the loading actuator is a hydraulic servo actuator with a built-in high-precision force sensor; the slide rail device consists of linear guide rails and sliders to ensure smooth movement; the lever device is made of alloy steel and is used for load transfer and distribution; the quartz lamp is an infrared heating element, fixed by a lamp bracket and C-type clamps; the temperature acquisition instrument works with a K-type thermocouple to achieve multi-channel temperature monitoring; and the computer data acquisition system integrates load, displacement, and temperature signals to achieve real-time display and storage.

[0062] The reaction support, front adjustment plate fixing support, rear adjustment plate track fixing support, slide rail device, lever device, C-type clamp, etc. of this invention are all specially designed, processed and assembled; the loading actuator, force sensor, displacement sensor, quartz lamp tube, K-type thermocouple, temperature acquisition instrument, etc. are purchased from the market; all standard parts and raw materials are directly purchased from the market.

[0063] This invention presents a force-thermal coupling test device and method for adjusting mechanisms, enabling force-thermal coupling tests on adjusting plates under simulated actual working conditions to comprehensively evaluate their structural strength, fatigue life, and thermal stability. The device achieves adaptive adjustment of the loading direction through a slide rail and lever system, and achieves uniform thermal radiation through follow-up heating with quartz lamps, solving the problems of loading direction deviation and thermal gradient control in traditional tests. The test data can provide effective support for structural optimization, material selection, and reliability assessment of the adjusting plate, and is applicable to the comprehensive performance evaluation of various aero-engine adjusting mechanisms.

[0064] The above description is only a preferred embodiment of the present invention. It should be noted that, for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A force-thermal coupling test device for adjusting mechanism, characterized in that, include: Fixture support system, adjustable loading system, heating system, and data measurement system; The clamp support system includes: a reaction force bracket (4), a front adjustment plate fixing bracket (2), a rear adjustment plate track fixing bracket (3), and an adjustment mechanism (1). The inner side of the reaction support (4) is equipped with a rear slide rail device consisting of a rear guide rail (22) and a rear slider (21) and a front slide rail device consisting of a front guide rail (24) and a front slider (23); The adjustment mechanism (1) is divided into a front adjustment plate and a rear adjustment plate. The front adjustment plate (101) has two front fixed ends (103) and one fixed end (104) connected to the front adjustment plate loading actuator. Two rear adjustment plate track fixing brackets (3) are located on both sides of the rear adjustment plate (102). A fixed track is fixed on the inner side of each rear adjustment plate track fixing bracket. Two rear fixed ends (105) of sliding joints are fixed on both sides of the rear adjustment plate (102). Each sliding joint is embedded in the adjacent fixed track. The adjustable loading system includes: one front adjustment plate loading actuator (5), two rear adjustment plate loading actuators (6), one adjustment plate motion control actuator (7), one front adjustment plate slide control actuator (8), and one rear adjustment plate slide control actuator (9); all actuators are driven by servo electric or hydraulic systems, and each actuator has a built-in force sensor (17) and displacement sensor (18). The adjustment plate motion control actuator: one end of the adjustment plate motion control actuator is connected to the fixed end (104) of the front adjustment plate loading actuator through a universal joint, and the other end is fixed to the reaction bracket through a pin fork ear; The front and rear adjustment plate slide control actuators are respectively installed on the corresponding sliders of the front and rear slide rail devices. The actuator cylinder is fixed to the slider by a pin, and the piston rod is connected to the reaction bracket by a pin fork. The front and rear adjustment plate loading actuators: one end of the front adjustment plate loading actuator (5) is installed on the front slider (23), and one end of the two rear adjustment plate loading actuators is installed on the rear slider (21); the other ends of the front and rear adjustment plate loading actuators are connected to the lugs on the front and rear adjustment plates by steel wire ropes through the front lever system (11) and the rear lever system (28), respectively. The heating system is installed on the regulating mechanism and is connected to the data measurement system.

2. The force-thermal coupling test device for adjusting mechanism according to claim 1, characterized in that, The front adjustment plate fixing bracket (2) consists of two side legs and an upper crossbeam. The tops of the two front fixing ends (103) are fixed to the bottom surface of the upper crossbeam. The bases of the two side legs are fixed on the platform base plate. The base of the rear adjustment plate track fixing bracket (3) is fixed on the platform base plate.

3. The force-thermal coupling test device for adjusting mechanism according to claim 1, characterized in that, The front adjustment plate is equipped with 4 load loading points. The 4 loads are combined into 1 concentrated loading point through the front lever system (11), and then connected to the front adjustment plate loading actuator through the pin shaft. The rear adjustment plate is also equipped with 4 loading points, which are combined into 2 concentrated loading points through the rear lever system (28), and connected to the two rear adjustment plate loading actuators respectively.

4. The force-thermal coupling test device for adjusting mechanism according to claim 1, characterized in that, The front lever system includes a front rod and a rear rod. The centers of the front rod and the rear rod are movably connected to the other end of the front adjusting plate loading actuator through pins. The two ends of the front rod and the rear rod are fixed to corresponding lugs fixed on the front adjusting plate through steel wire ropes. The rear lever system includes a front crossbar and a rear crossbar. The centers of the front crossbar and the rear crossbar are movably connected to the other end of the adjacent rear adjustment plate loading actuator, and the two ends of the front crossbar and the rear crossbar are fixed to corresponding lugs fixed on the rear adjustment plate by steel wire ropes.

5. The force-thermal coupling test device for adjusting mechanism according to claim 1, characterized in that, The heating system includes: quartz lamp tubes, lamp tube brackets, and C-shaped clamps; multiple quartz lamp tubes are evenly arranged on the back of the front adjustment plate and the rear adjustment plate, and the lamp tube brackets located on the back of the front adjustment plate and the rear adjustment plate are respectively fixed to the back of the adjustment plate by four C-shaped clamps and bolts.

6. The force-thermal coupling test device for the adjustment mechanism according to claim 1, characterized in that, The data measurement system includes: a K-type thermocouple, a temperature acquisition instrument, and a computer data acquisition system; multiple K-type thermocouples are attached to the surfaces of the front and rear adjustment plates, and the K-type thermocouple wires are connected to the temperature acquisition instrument via high-temperature cables; the computer data acquisition system is connected to the temperature acquisition instrument and the force sensor on the loading actuator.

7. The force-thermal coupling test device for adjusting mechanism according to claim 1, characterized in that, The reaction support (4) is composed of a transverse reaction beam and a longitudinal beam structure connected by a high-strength pin. The rear slide rail device is installed on the inner side of the transverse reaction beam. The rear slider is connected to the rear adjustment plate loading actuator through the pin fork ear. The front slide rail device is installed at the top of the transverse reaction beam. The front adjustment plate slide plate controls the actuator to drive the front slider, and the rear adjustment plate slide plate controls the actuator to drive the rear slider.

8. The force-thermal coupling test device for adjusting mechanism according to claim 1, characterized in that, The front adjustment plate has four load application points, which are located at the 1 / 4 and 3 / 4 positions of the front adjustment plate, respectively.

9. The force-thermal coupling test device for adjusting mechanism according to claim 5, characterized in that, Insulating material is installed between the clamp and the adjusting plate.

10. The force-thermal coupling test device for the adjustment mechanism according to claim 6, characterized in that, The K-type thermocouples are positioned at the center of the front and rear of the regulating plate.

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