A hydraulic self-adaptive multi-point synchronous loading testing device for preform strength detection

Abstract

This invention discloses a hydraulic adaptive multi-point synchronous loading testing device for precast component strength testing, belonging to the field of concrete component testing technology. The device mainly includes a moving frame, a lifting mechanism, and a core hydraulic adaptive multi-point synchronous loading testing mechanism. The testing mechanism is equipped with an oil reservoir and multiple distributed adaptive loading units. Each unit is interconnected with the oil reservoir via oil circuits, and the system's initial balance is achieved using a spring-loaded piston plate within the oil reservoir. The end of each loading unit is connected to a pressure plate via a ball joint and integrates pressure and tilt sensors. This invention solves the problems of stress concentration and result distortion when using traditional rigid indenters to test curved, thin-walled, and other irregularly shaped precast components. It achieves integrated testing with adaptive fitting, uniform loading, and visualized pressure distribution, offering advantages such as high accuracy, strong versatility, and good reliability.

Description

Technical Field

[0001] This invention relates to the field of strength testing technology for precast concrete components, and specifically discloses a hydraulic adaptive multi-point synchronous loading test device for strength testing of precast components. Background Technology

[0002] In the field of prefabricated buildings and municipal engineering, strength testing of precast concrete components (such as curved wall panels, large composite floor slabs, precast pipes, etc.) is a core link in ensuring structural safety.

[0003] Currently, standard laboratory strength testing methods rely on a rigid pressure plate to load a standard test block as a whole. This method assumes that the stress surface is ideally flat and the contact is uniform. For example, utility model patent application number 202321585263.4 discloses a strength testing device for precast concrete components. This testing device includes a hydraulic cylinder, a testing platform, and a multi-clamp assembly. When used for strength testing of precast components, the hydraulic cylinder moves down to contact the precast concrete component, and the rigid pressure plate applies pressure to the surface of the precast component to complete its strength test.

[0004] However, directly applying such precast component strength testing devices to actual engineering projects involving large-sized, curved, or micro-warped precast concrete components presents the following serious technical problems. First, for curved components such as arched slabs and precast pipes, the rigid planar indenter can only form line contact, leading to extreme stress concentration. The measured strength is only the local crushing strength and cannot reflect the overall load-bearing capacity of the component. Simultaneously, for large-span thin-walled composite floor slabs, even minor unevenness can cause initial stress concentration under the rigid indenter, easily inducing local buckling. The measured value is the critical value for instability rather than the true material strength limit. Second, existing testing devices can only obtain a total loading force and cannot determine the distribution of this force on the component surface. When defects or uneven stiffness exist within the precast component, the stress distribution will further deteriorate, leading to atypical failure, which operators cannot detect. This creates blind spots in the testing process and results in low data reliability. Third, in order to simulate complex forces, some existing solutions use an array of multiple independently controlled electro-hydraulic servo actuators. However, this system is essentially a complex multivariable active force control system. Its core objective is to accurately execute multiple preset independent load spectra, rather than passively adapting to the surface shape of the component. Moreover, it is expensive and difficult to debug and maintain.

[0005] Therefore, there is an urgent need in this field for a new type of precast component strength loading test device that integrates adaptive leveling, synchronous loading, and distributed sensing functions, so as to accurately measure the compressive strength of various large-sized, non-planar, or irregularly shaped precast components. Summary of the Invention

[0006] The purpose of this invention is to provide a hydraulic adaptive multi-point synchronous loading test device for testing the strength of precast components, so as to solve the technical problems and shortcomings of existing devices in the process of testing the compressive strength of concrete precast components that are too large, have curved surfaces, or have microscopic warping.

[0007] This invention is achieved through the following technical solution: A hydraulic adaptive multi-point synchronous loading test device for strength testing of precast components includes a frame, a lifting mechanism mounted on the frame, and an industrial control computer. The lower end of the lifting mechanism is equipped with the hydraulic adaptive multi-point synchronous loading test mechanism, which includes: The loading seat is fixedly connected to the lower end of the lifting mechanism; The mounting part is located below the loading seat and is driven to lift and lower by a second hydraulic cylinder on the loading seat to apply test pressure; An oil reservoir is located at the upper end of the mounting part. Inside the reservoir, a slidable sealing plate is connected by a first spring. The sealing plate divides the inner cavity of the oil reservoir into an oil cavity and an air cavity. The bottom of the oil cavity is provided with multiple hydraulic oil communication ports, and the air cavity is provided with an air pressure communication hole. Multiple adaptive loading units are distributed and fixedly disposed at the lower end of the mounting part; each adaptive loading unit includes a hydraulic cylinder, a piston disposed inside the hydraulic cylinder, a second spring for resetting the piston, a pressure rod connected to the piston, and a pressure plate disposed at the lower end of the pressure rod; the upper cavity of the hydraulic cylinder is connected to the hydraulic oil communication interface through a hose with a solenoid valve, and a pressure sensor for detecting the internal oil pressure is provided in the upper cavity of the hydraulic cylinder, the pressure sensor being electrically connected to an industrial control computer.

[0008] As a further provision of the above solution, the lower end of the pressure rod is connected to the pressure plate via a ball joint assembly; the ball joint assembly includes a ball joint seat fixed to the lower end of the pressure rod and a ball head movably embedded in the ball joint seat, and the pressure plate is fixedly connected to the ball head.

[0009] As a further feature of the above solution, an inclination sensor for detecting the tilt angle of the pressure plate is installed on the upper surface of the pressure plate, and the inclination sensor is electrically connected to the industrial control computer.

[0010] As a further feature of the above solution, a transverse guide rod is connected to the sealing moving plate, and the transverse guide rod extends outward from the side end of the air chamber; a first distance sensor for detecting the displacement of the sealing moving plate is provided on the side of the air chamber, and the first distance sensor is electrically connected to the industrial control computer.

[0011] As a further feature of the above solution, the lower end of the mounting part is provided with multiple strips that slide along its width direction. The adaptive loading unit is fixed to the strips by a connecting ring on the outer wall of the hydraulic cylinder. An adjustment mechanism for adjusting the distance between adjacent strips is also provided between the multiple strips.

[0012] As a further provision of the above solution, the adjustment mechanism includes a fork-type telescopic frame disposed above all the strips, and a telescopic drive component for driving the fork-type telescopic frame to extend and retract; each hinge point of the fork-type telescopic frame is provided with a hinge shaft below it, and the strip is provided with a limiting slide block that cooperates with the corresponding hinge shaft, and the middle strip is fixedly disposed relative to the mounting part.

[0013] As a further feature of the above solution, the mounting part is also provided with a second ranging sensor for detecting the position of the outermost strip, and the second ranging sensor is electrically connected to the industrial control computer.

[0014] As a further provision of the above solution, the lifting mechanism includes a first hydraulic cylinder disposed on the top of the frame, the lower end of the first hydraulic cylinder being connected to a lifting seat plate, and the two ends of the lifting seat plate cooperating with vertical slide rails on the two side walls of the frame.

[0015] As a further provision of the above scheme, a workpiece conveying mechanism is also included, which includes a conveying roller seat and a row of idlers rotatably disposed in the conveying roller seat.

[0016] As a further feature of the above solution, the bottom of both sides of the workpiece conveying mechanism is provided with moving rails, the lower ends of both sides of the frame are provided with traveling parts that interact with the moving rails, and the frame is also provided with handles for easy operation and movement.

[0017] The principle of the hydraulic adaptive multi-point synchronous loading test device for precast component strength testing disclosed in this invention for testing the compressive strength of precast components is as follows: First, when the precast component to be tested is transported to the testing station by the workpiece conveying mechanism, the lifting mechanism drives the entire hydraulic adaptive multi-point synchronous loading testing mechanism to descend. As the pressure plates of multiple adaptive loading units successively contact the surface of the precast component, the contact resistance forces the pistons in each hydraulic cylinder to rise, pushing the hydraulic oil in the hydraulic cylinders into the oil chamber of the oil reservoir through the opened solenoid valves and hoses. The oil chamber pressure pushes the sealing moving plate to compress the first spring and generate displacement. This process continues until all pressure plates are tightly attached to the component surface under the self-balancing action of the hydraulic interconnection system. At this point, the industrial control computer can determine that leveling is complete by monitoring the signal changes of the first distance sensor (such as whether the moving speed of the sealing moving plate has reached its maximum).

[0018] Next, after all the adaptive loading units have been leveled, the industrial control computer actively controls all solenoid valves to close, dividing the originally connected hydraulic circuit into multiple independent closed oil chambers. At this time, each adaptive loading unit changes from a "flexible adaptive" state to a "rigid loading column" state. Subsequently, the second hydraulic cylinder is activated, driving the mounting part and all the leveled loading units to press down synchronously, applying a uniformly increasing test load to the precast component.

[0019] Subsequently, throughout the loading process, pressure sensors on each hydraulic cylinder monitor the oil pressure in real time. Combined with the tilt angle feedback from the tilt sensor on the pressure plate, the industrial control computer can accurately calculate the true normal pressure acting perpendicularly on the component surface at each loading point. The pressure data from all points are synchronously collected, processed, and displayed by the industrial control computer, forming a pressure distribution cloud map on the surface of the precast component, and the total load is calculated in real time.

[0020] Finally, by analyzing the load-displacement curve or monitoring the pressure distribution, the test is stopped when the precast component reaches its failure limit or the preset loading value. After the test, all components are reset in sequence, ready for the next test.

[0021] Compared with the prior art, the present invention has the following beneficial effects: The testing device disclosed in this invention achieves high-precision adaptive loading of irregularly shaped precast components. Through the principle of hydraulic interconnection and balance, multiple loading units can automatically and passively adapt to the irregular surface morphology of the precast components, such as curved surfaces and warping, ensuring surface contact from the initial loading stage. This fundamentally avoids the stress concentration problem caused by traditional rigid indenters, enabling the test results to truly reflect the overall load-bearing capacity of the component, rather than local strength, thus effectively improving the accuracy of the test results.

[0022] The adaptive loading unit in this invention cleverly combines the "flexibility" of the system during the adaptive leveling phase with the "rigidity" of the main loading phase by using a solenoid valve to control the on / off state of the oil circuit. Its overall structure is simple and reliable, eliminating the need for a complex multi-axis servo active control system, thus significantly reducing manufacturing costs and maintenance difficulty while ensuring uniform loading.

[0023] The hydraulic adaptive multi-point synchronous loading test mechanism of this invention has the ability to perceive multi-point pressure distribution in real time. Each loading unit integrates an independent pressure sensor and tilt angle sensor module, which can measure and feed back the real normal pressure of each loading point in real time. This breaks the limitation of traditional devices that can only measure the total force, allowing operators to intuitively grasp the load distribution and greatly improving the depth and reliability of the test.

[0024] This invention also achieves automatic adjustment of the loading dot matrix spacing through the adjustable strip and fork-type telescopic frame adjustment mechanism design, enabling a single device to quickly adapt to the testing needs of different sizes, especially large-sized plate components, realizing multi-purpose functionality. Combined with the industrial control computer for automated control of the entire process, it significantly improves testing efficiency and the intelligence level of the equipment. Attached Figure Description

[0025] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a three-dimensional structural diagram of the present invention from a first angle; Figure 2 This is a schematic diagram of the second-angle three-dimensional structure of the present invention; Figure 3 This is a three-dimensional structural diagram of the hydraulic adaptive multi-point synchronous loading test mechanism in this invention; Figure 4 This is a partial three-dimensional structural diagram of the hydraulic adaptive multi-point synchronous loading test mechanism in this invention; Figure 5 This is a three-dimensional structural diagram of the hydraulic adaptive multi-point synchronous loading test mechanism in Embodiment 2 of the present invention; Figure 6 This is a partial three-dimensional structural diagram of the hydraulic adaptive multi-point synchronous loading test mechanism in Embodiment 2 of the present invention; Figure 7 This is a three-dimensional cross-sectional schematic diagram of the internal structure of the adaptive loading unit in this invention; Figure 8 This is a schematic diagram of the planar structure of the adaptive loading unit acting on the precast concrete pipe in this invention. Figure 9 This is a schematic diagram of the planar structure when the adaptive loading unit of the present invention is applied to a large-span composite floor slab. Detailed Implementation

[0027] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0028] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The following will refer to the appendix... Figures 1-9 This application will be described in detail with reference to the embodiments. Example 1

[0029] Example 1 discloses a hydraulic adaptive multi-point synchronous loading test device for testing the strength of precast components, such as... Figure 1 and Figure 2 As shown, the device mainly includes a moving frame 10, a workpiece conveying mechanism 20, and a hydraulic adaptive multi-point synchronous loading test mechanism 30.

[0030] The workpiece conveying mechanism 20 is used to carry and transport the prefabricated parts to be inspected to the inspection station, and has moving rails 40 on both sides of its bottom. The moving frame 10 cooperates with the moving rails 40 through the traveling part 12 at its lower end, so that it can move along the length of the prefabricated parts above the workpiece conveying mechanism 20 to achieve positioning of different parts of the prefabricated parts.

[0031] In the specific design, the movable frame 10 in this embodiment 1 adopts a gantry frame structure. A first hydraulic cylinder 13 is installed on the top of the gantry frame 11 to drive the lifting seat plate 14 to move vertically up and down; the two sides of the lifting seat plate 14 are slidably connected to the side walls of the gantry frame 11 through vertical slide rails 15 to ensure smooth lifting. For ease of operation, a handle 16 is also provided on the gantry frame 11. Finally, an industrial control computer 50 integrating the processing system and the display screen is installed on the side end of the gantry frame 11 above the handle 16.

[0032] The workpiece conveying mechanism 20 can be modularly designed according to the type of precast component being tested. In this embodiment 1, taking a precast concrete pipe as an example, the conveying mechanism 20 includes a conveying roller seat 21 supported by a support frame 22. A row of idler rollers 23 matching the shape of the pipe are rotatably arranged inside the conveying roller seat 21. The idler rollers 23 have inner grooves on their surfaces to ensure that the pipe is stable and does not roll during the testing process.

[0033] The hydraulic adaptive multi-point synchronous loading test mechanism 30 is the core of this invention, such as... Figure 3 , Figure 4 Appendix Figure 7 As shown, the mechanism is fixedly mounted below the lifting seat plate 14 via a loading base 301. A mounting part 302 is located below the loading base 301, and the two are connected by a vertical slide bar 303 and a second hydraulic cylinder 304. The second hydraulic cylinder 304 serves as the main loading power source, providing precise and controllable loading force during the strength testing phase.

[0034] The key to achieving adaptive loading lies in the coordinated operation of the oil reservoir 31 and multiple adaptive loading units 32. The oil reservoir 31 is fixedly mounted on the upper end of the mounting section 302, and its interior is divided into two chambers by a slidable sealing plate 313. One chamber is connected to all loading units via a hydraulic oil connection interface 311; the other is an air chamber, connected to the atmosphere via a pneumatic connection hole 312, and equipped with a first spring 314 to provide initial preload to the sealing plate 313. Furthermore, a first ranging sensor 316 is installed on the side of the oil reservoir 31 corresponding to the air chamber, and a transverse guide rod 315 penetrating the side of the oil reservoir 31 is connected to the sealing plate 313. The first ranging sensor 316 is preferably a laser ranging sensor, and it is electrically connected to the processing system inside the industrial control computer 50. The first ranging sensor 316 is used not only to monitor the position of the sealing moving plate 313 in real time, but also to detect the moving speed of the sealing moving plate 313 inside the oil tank 31 in conjunction with the industrial control computer 50. This speed signal is the key to determining whether all loading units have been pressed against the surface of the precast component.

[0035] Multiple adaptive loading units 32 are distributed and fixed at the lower end of the mounting section 302 in a matrix. Each unit includes a hydraulic cylinder 320, a piston 322 disposed inside the hydraulic cylinder 320, a pressure rod 323 connected to the piston 322, and a second spring 324 sleeved on the pressure rod 323. The end of the pressure rod 323 is connected to a pressure plate 329 via a ball joint (composed of a ball joint seat 325 and a ball head 326), allowing the pressure plate 329 to adaptively conform to the irregular surface of the precast component. The upper cavity of the hydraulic cylinder 320 is connected to the oil reservoir 31 via a hose 34 with a solenoid valve 327, and a pressure sensor 328 is also installed in the upper cavity of the hydraulic cylinder 320. All the oil chambers of the adaptive loading units 32 and the oil reservoir 31 are filled with hydraulic oil.

[0036] Finally, to accurately calculate the actual pressure acting perpendicularly on the surface of the precast component, a MEMS tilt sensor 33 is also installed on each pressure plate 329. Each MEMS tilt sensor 33 is electrically connected to the industrial control computer 50 via wires. When the pressure plate 329 tilts due to its contact with the curved surface, the industrial control computer 50 can perform vector decomposition correction on the hydraulic data measured by the pressure sensor 328 based on the tilt angle data, thereby obtaining an accurate normal pressure value. At the same time, the final processed accurate normal pressure value can be displayed and stored by the industrial control computer 50.

[0037] The hydraulic adaptive multi-point synchronous loading test device disclosed in Embodiment 1 has the following operating steps and working principle: Positioning and Adaptive Leveling: The workpiece conveying mechanism 20 delivers the prefabricated component (such as a pipe) to the testing position, and the moving frame 10 moves above the target section. The first hydraulic cylinder 13 drives the entire hydraulic adaptive multi-point synchronous loading test mechanism 30 to descend. When each pressure plate 329 successively contacts the curved surface of the pipe, the contact resistance will force the oil in each hydraulic cylinder 320 into the oil storage tank 31, thereby pushing the sealing moving plate 313 to compress the first spring 314.

[0038] System locking and synchronous loading: When all pressure plates 329 continue to descend, until all pressure plates 329 are tightly in contact with the component surface (e.g. Figure 8 As shown in the diagram, at this point, the flow rate extruded into the oil reservoir 31 is at its maximum, and the moving speed of the sealing moving plate 313 within the oil reservoir 31 is at its maximum. This speed can be detected by the first ranging sensor 316 and determined by the industrial control computer 50. Then, based on the signal from the first ranging sensor 316, the industrial control computer 50 determines that leveling is complete and controls all solenoid valves 327 to close, thereby transforming the originally interconnected hydraulic system into multiple independent "rigid" loading columns. Subsequently, the second hydraulic cylinder 304 is activated, pushing the mounting part 302 and all the leveled adaptive loading units 32 to press down synchronously, applying a uniformly increasing load to multiple points on the precast component.

[0039] Data acquisition and strength determination: During the loading process, the pressure sensor 328 of each adaptive loading unit 32 measures the oil pressure in real time. Combined with the data of the MEMS tilt sensor 33, the industrial control computer 50 can accurately calculate the actual vertical pressure and total load applied at each loading point. Then, by monitoring the load-displacement relationship, the compressive strength of the component can be accurately determined.

[0040] (4) Switch the test position and continue loading test; after the strength test of this part of the precast component is completed, first control the hydraulic adaptive multi-point synchronous loading test mechanism 30 to rise and reset, and then push the moving frame 10 along the moving track 40 a certain distance. Then repeat the above operation steps on the next area of ​​the precast component to achieve the full-face multi-point strength loading test of the precast component. Example 2

[0041] Based on Example 1, this embodiment 2 optimizes and improves the hydraulic adaptive multi-point synchronous loading test mechanism 30, giving it adjustable spacing of the loading unit matrix, which greatly enhances the overall testing device's ability to handle components of different sizes, especially large flat plate types (such as...). Figure 9 The test adaptability and versatility of the large-span composite floor slab shown.

[0042] like Figure 5 and Figure 6As shown, the improvement in this embodiment 2 lies in the lower end of the mounting part 302. Multiple laterally sliding strips 35 are provided here to fix the adaptive loading unit 32. Specifically, the middle strip 35 is fixedly mounted to both sides of the mounting part 302 via end blocks 351 at both ends. The remaining strips 35 are fitted onto two parallel through-type sliding rods 36 through sliding holes on the end blocks 351, and the sliding rods 36 are fixed relative to the mounting part 302, thereby enabling the guiding sliding of the side strips 35.

[0043] The adjustment drive mechanism consists of a fork-type telescopic frame 360, a telescopic drive component 38, and a matching sensor control system. The fork-type telescopic frame 360 ​​is mounted above all the strips 35, with hinge shafts 361 below each hinge point embedded in limiting slide blocks 37 fixed to each strip 35. The telescopic drive component 38 (in this embodiment 2, a screw telescopic mechanism) is fixedly mounted on one side of the mounting part 302, and its telescopic end is connected to a moving block 362 at one end of the fork-type telescopic frame 360. By changing the position of the moving block 362, the expansion and contraction of the entire fork-type telescopic frame 360 ​​is controlled. When the fork-type telescopic frame 360 ​​extends or retracts, the cooperation between the hinge shafts 361 and the limiting slide blocks 37 drives all the strips 35 to move symmetrically or move closer to each other, with the middle strip as a fixed point, thereby steplessly adjusting the lateral distribution spacing of all adaptive loading units 32.

[0044] To precisely control the adjustment amount, a second distance sensor 39 is also provided on the side of the mounting part 302. This sensor monitors the position of the outermost strip 35 in real time and feeds the signal back to the industrial control computer 50, realizing digital closed-loop control of the adjustment process. In this embodiment 2, through the above-mentioned improved design, the operator can set or select a preset loading dot matrix mode on the industrial control computer 50 according to the size of the composite floor slab or other slab components to be tested. Then, the detection device can automatically adjust the hydraulic adaptive multi-point synchronous loading test mechanism 30 to the optimal distribution state, and then execute the same adaptive leveling and synchronous loading test process as in embodiment 1.

[0045] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A hydraulic adaptive multi-point synchronous loading test device for strength testing of precast components, comprising a frame, a lifting mechanism mounted on the frame, and an industrial control computer, characterized in that, The lower end of the lifting mechanism is equipped with a hydraulic adaptive multi-point synchronous loading test mechanism, which includes: The loading seat is fixedly connected to the lower end of the lifting mechanism; The mounting part is located below the loading seat and is driven to lift and lower by a second hydraulic cylinder on the loading seat to apply test pressure; An oil reservoir is located at the upper end of the mounting part. Inside the reservoir, a slidable sealing plate is connected by a first spring. The sealing plate divides the inner cavity of the oil reservoir into an oil cavity and an air cavity. The bottom of the oil cavity is provided with multiple hydraulic oil communication ports, and the air cavity is provided with an air pressure communication hole. Multiple adaptive loading units are distributed and fixedly installed at the lower end of the mounting part; each adaptive loading unit includes a hydraulic cylinder, a piston disposed inside the hydraulic cylinder, a second spring for resetting the piston, a pressure rod connected to the piston, and a pressure plate disposed at the lower end of the pressure rod; the upper cavity of the hydraulic cylinder is connected to a hydraulic oil communication interface through a hose with a solenoid valve, and a pressure sensor for detecting the internal oil pressure is provided in the upper cavity of the hydraulic cylinder, the pressure sensor being electrically connected to an industrial control computer.

2. The hydraulic adaptive multi-point synchronous loading test device for precast component strength testing according to claim 1, characterized in that, The lower end of the pressure rod is connected to the pressure plate via a ball joint assembly; the ball joint assembly includes a ball joint seat fixed to the lower end of the pressure rod and a ball head movably embedded in the ball joint seat, and the pressure plate is fixedly connected to the ball head.

3. The hydraulic adaptive multi-point synchronous loading test device for precast component strength testing according to claim 2, characterized in that, The upper surface of the pressure plate is equipped with a tilt sensor for detecting the tilt angle of the pressure plate, and the tilt sensor is electrically connected to the industrial control computer.

4. The hydraulic adaptive multi-point synchronous loading test device for precast component strength testing according to claim 1, characterized in that, A transverse guide rod is connected to the sealing moving plate, and the transverse guide rod extends outward from the side end of the air chamber; a first distance sensor for detecting the displacement of the sealing moving plate is provided on the side of the air chamber, and the first distance sensor is electrically connected to the industrial control computer.

5. The hydraulic adaptive multi-point synchronous loading test device for precast component strength testing according to claim 1, characterized in that, The lower end of the mounting part is provided with multiple strips that slide along its width direction. The adaptive loading unit is fixed to the strips by a connecting ring on the outer wall of the hydraulic cylinder. An adjustment mechanism for adjusting the distance between adjacent strips is also provided between the multiple strips.

6. The hydraulic adaptive multi-point synchronous loading test device for precast component strength testing according to claim 5, characterized in that, The adjustment mechanism includes a fork-type telescopic frame disposed above all the strips, and a telescopic drive component for driving the fork-type telescopic frame to extend and retract; each hinge point of the fork-type telescopic frame is provided with a hinge shaft below it, and the strip is provided with a limiting slide block that cooperates with the corresponding hinge shaft, and the middle strip is fixedly disposed relative to the mounting part.

7. The hydraulic adaptive multi-point synchronous loading test device for precast component strength testing according to claim 6, characterized in that, The mounting section is also equipped with a second ranging sensor for detecting the position of the outermost strip, and the second ranging sensor is electrically connected to the industrial control computer.

8. The hydraulic adaptive multi-point synchronous loading test device for precast component strength testing according to claim 1, characterized in that, The lifting mechanism includes a first hydraulic cylinder mounted on the top of the frame, with a lifting seat plate connected to the lower end of the first hydraulic cylinder. The two ends of the lifting seat plate cooperate with vertical slide rails on the two side walls of the frame.

9. The hydraulic adaptive multi-point synchronous loading test device for precast component strength testing according to claim 8, characterized in that, It also includes a workpiece conveying mechanism, which includes a conveying roller seat and a row of idlers rotatably disposed in the conveying roller seat.

10. The hydraulic adaptive multi-point synchronous loading test device for precast component strength testing according to claim 9, characterized in that, The workpiece conveying mechanism is provided with moving rails on both sides of the bottom, and the lower ends of both sides of the frame are provided with traveling parts that interact with the moving rails. The frame is also provided with handles for easy operation and movement.

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