Comprehensive mechanical property test board for hinged bogie of trackless carry-scraper

Abstract

A comprehensive mechanical property test board for a hinged bogie of a trackless carry-scraper relates to the technical field of mechanical property test and comprises an integrated platform which is respectively provided with a tensile compression test assembly and a torsion test assembly; the tension and compression test assembly comprises a supporting rack, a mounting side plate is fixed on the upper surface of the supporting rack, and a tension and compression loading module is telescopically arranged on the mounting side plate; the tension and compression loading module comprises a compression jacking head, and a pressure sensor is arranged on the side end face of the compression jacking head; a stretching chuck is fixed to the peripheral wall, close to the tail end, of the compression jacking head, four stretching clamping jaws are arranged on the stretching chuck in a sliding and telescopic mode, and tension sensors are arranged on the stretching clamping jaws. The test board solves the problems of dispersed test, low efficiency, manual dependence, insufficient precision, unstable platform, poor universality and the like when comprehensive mechanical property test is carried out on the hinged bogie of the trackless carry-scraper in the prior art.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of mechanical property testing, in particular to a comprehensive mechanical property test bench for articulated bogies of trackless scrapers. BACKGROUND

[0002] The articulated bogie of a trackless scraper is the core load-bearing and steering component of the scraper, and its mechanical properties such as tension, compression, bending and torsion directly determine the operational safety, stability and service life of the entire machine. Therefore, the design rationality and manufacturing reliability of the articulated bogie need to be verified through systematic mechanical property testing. However, there are still many problems to be solved in the current mechanical property testing technology for the articulated bogie of a trackless scraper: Firstly, the traditional testing scheme requires independent special testing equipment for different mechanical property indicators, which not only leads to large overall equipment space and high purchase and maintenance costs, but also requires repeated transfer and re-clamping of the articulated bogie between multiple devices during testing, which not only complicates the operation process, but also easily causes positioning deviation due to repeated clamping, seriously restricting the overall efficiency of the testing work. Secondly, the automation level of existing testing devices is generally low, and the hoisting and unloading of workpieces, precise positioning of testing stations and posture adjustment during testing all rely on manual operation, which not only greatly increases the labor intensity of operators, but also easily leads to insufficient positioning accuracy due to the randomness of human operation, thereby affecting the consistency and reliability of test data. Thirdly, the sensor configuration of traditional testing equipment is relatively single, making it difficult to comprehensively and real-time monitor the mechanical response of the workpiece under different loads, and the loading system mostly adopts a rough control method, lacking the coordinated precise control of hydraulic and electrical control systems, resulting in insufficient stability during loading, poor accuracy of data collection, and difficulty in meeting the engineering verification requirements in terms of repeatability and lateral comparability of test results. Fourthly, the structural design of some testing platforms does not fully consider the rigidity and stability requirements of mechanical testing, and the connection strength of integrated foundations, support components and limiting mechanisms is insufficient, which easily causes vibration and structural deformation during loading testing, directly affecting the collection of high-precision mechanical parameters and providing reliable data support for product performance evaluation. Fifthly, the clamping mechanism and loading module of existing testing equipment are mostly fixed structures, which cannot be flexibly adjusted according to the complex structural characteristics of the articulated bogie of a trackless scraper, making it difficult to adapt to diversified clamping methods and loading angle requirements, and the equipment has poor versatility, which cannot meet the rapid switching requirements of different specifications of articulated bogies or different testing projects.

[0003] The aforementioned problems prevent the mechanical performance testing of articulated bogies for trackless loaders from achieving the ideal results in terms of efficiency, accuracy, reliability, and versatility for engineering applications. This seriously affects the product development cycle and quality control level. Therefore, there is an urgent need for an integrated, automated, high-precision, and highly versatile testing device to solve many of the pain points in the existing technology. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a comprehensive mechanical performance testing platform for articulated bogies of trackless loaders, which solves the problems of scattered testing, low efficiency, reliance on manual labor, insufficient accuracy, platform instability, and poor versatility in the comprehensive mechanical performance testing of articulated bogies of trackless loaders in traditional technologies.

[0005] To achieve the above objectives, the present invention provides the following technical solution: A comprehensive mechanical performance test bench for the articulated bogie of a trackless loader includes an integrated platform, on which tensile and compression test components and torsion test components are respectively provided.

[0006] As an optimized solution, a guide base is welded to the middle of the upper surface of the integrated platform. Two sets of longitudinally symmetrical limiting seats are fixed on the upper surface of the guide base. A sliding base is slidably engaged between the two sets of limiting seats. A central steering platform that can be raised, lowered, and rotated is provided on the sliding base.

[0007] As an optimized solution, the tensile and compression testing assembly includes a support frame welded to the upper surface of the integrated platform, a mounting side plate fixed to the upper surface of the support frame, and a tensile and compressive loading module telescopically mounted on the transverse outer wall of the mounting side plate.

[0008] As an optimized solution, the tension-compression loading module includes a compression top support head, and a pressure sensor is provided on the side end face of the compression top support head.

[0009] As an optimized solution, a tension chuck is fixed on the outer peripheral wall near the end of the compression top support head. The tension chuck is equipped with four tension claws that slide and extend, and each tension claw is equipped with a tension sensor.

[0010] As an optimized solution, the tension and compression loading module is also telescopically installed on the lateral sidewall of the central steering platform.

[0011] As an optimized solution, the torsion test assembly includes a torsion test stand welded to the upper surface of the integrated platform, and a test mounting bracket is fixed to the upper surface of the torsion test stand.

[0012] As an optimized solution, a torsion loading module is rotatably provided on the transverse side wall of the test mounting frame. The torsion loading module includes a positioning half-cylinder, and several positioning clamps are telescopically provided on the inner peripheral wall of the positioning half-cylinder. A torque sensor is integrated on the positioning clamps.

[0013] As an optimized solution, the torsional loading module is also rotatably mounted on the longitudinal outer wall of the central steering platform.

[0014] As an optimized solution, the integrated platform is also equipped with a hoisting and unloading assembly. The hoisting and unloading assembly includes a hoisting support frame, which is a U-shaped frame with the opening facing downwards. The lower end of the hoisting support frame is welded to the longitudinal side of the upper surface of the integrated platform. A horizontal hoisting top plate is welded to the middle of the upper end of the hoisting support frame. A vertical hoisting telescopic cylinder is fixed at the center of the inner bottom surface of the hoisting top plate.

[0015] As an optimized solution, the lower telescopic cylinder of the hoisting telescopic cylinder is fixed with a longitudinally extending hoisting guide frame. The cross-section of the hoisting guide frame is C-shaped with the opening facing downwards. Each transverse inner wall of the hoisting guide frame is fixed with an electrically driven slide rail. A hoisting slide block is slidably engaged between two of the electrically driven slide rails. Four symmetrical hoisting cables are fixed to the lower surface of the hoisting slide block. The lower ends of the two transversely opposite hoisting cables are fixed with arc-shaped hanging plates.

[0016] As an optimized solution, an integrated electrical box is fixed to one side of the upper surface of the integrated platform, and an integrated control console is fixed to the other side of the upper surface of the integrated platform.

[0017] As an optimized solution, each of the limiting seats is provided with a drive threaded rod that passes through and is threadedly connected to the sliding base.

[0018] As an optimized solution, a steering drive motor is fixed to the middle of the lower surface of the sliding base, the output shaft end of the steering drive motor passes upward through the sliding base and is fixed to a steering wheel, a lifting and telescopic cylinder is fixed to the middle of the upper surface of the steering wheel, and the upper telescopic end of the lifting and telescopic cylinder is fixed to the center of the lower surface of the central steering platform.

[0019] As an optimized solution, a clearance slot is provided in the middle of the upper surface of the guide base, and the steering drive motor is located in the clearance slot.

[0020] As an optimized solution, the height of the torsional loading module is lower than that of the tension / compression loading module.

[0021] As an optimized solution, a hydraulic telescopic cylinder is fixed in the middle of the upper surface of the support frame, and the telescopic end of the hydraulic telescopic cylinder passes through the mounting side plate and is fixed to the back of the compression top support head.

[0022] As an optimized solution, a hydraulic telescopic cylinder connected to the tension-compression loading module is also fixed on the other side of the transverse outer wall of the central steering platform.

[0023] As an optimized solution, a torsion drive motor is fixed on the other side of the transverse outer wall of the test mounting frame, and the end of the output shaft of the torsion drive motor passes through the test mounting frame and is fixed to the back of the positioning half cylinder.

[0024] As an optimized solution, a torsion drive motor that is connected to the torsion loading module is also fixed on the longitudinal outer wall of the other side of the central steering platform.

[0025] As an optimized solution, the integrated platform is also equipped with a bending test assembly, which includes a bending support frame. The bending support frame is an inverted L-shaped frame, and a vertical connecting plate is fixed to the upper end of the bending support frame. The upper end of the vertical connecting plate is welded to the inner top surface of the hoisting support frame.

[0026] As an optimized solution, a telescopic cylinder is fixed in the middle of the upper surface of the bending support frame, and the lower telescopic end of the telescopic cylinder passes through the bending support frame and is fixed with a bending pressure seat. A displacement sensor is integrated on the bending pressure seat.

[0027] As an optimized solution, a steering limit frame is also fixed on the upper surface of the integrated platform. The steering limit frame is a U-shaped frame that is horizontally set and longitudinally open, and the steering limit frame is set above the two sets of limit seats.

[0028] As an optimized solution, a limit slot is provided in the steering limit frame, a sliding column seat is installed in the limit slot, a follower displacement seat is fixed on the upper surface of the sliding column seat, an electrically controlled telescopic cylinder is fixed on the upper surface of the follower displacement seat, and a support bracket is fixed on the upper telescopic end of the electrically controlled telescopic cylinder.

[0029] As an optimized solution, a vertical positioning telescopic cylinder is fixed in the middle of the lower surface of the lifting slide, and an arc-shaped lower pressure plate is fixed at the lower telescopic end of the positioning telescopic cylinder. The arc-shaped lower pressure plate is arranged opposite to the arc-shaped lifting plate and is used to clamp the articulated bogie of the trackless loader.

[0030] Compared with the prior art, the beneficial effects of the present invention are: First, the test bench achieves efficient integration of various mechanical property tests. Traditional testing often requires multiple dedicated devices to complete tensile, compression, bending, and torsion tests separately. However, this device, through an adjustable central steering platform and modular test components, can complete all test items at a single station. This not only significantly reduces the equipment's footprint but also avoids the repetitive clamping problems caused by transferring the articulated bogie of the trackless loader between different devices, greatly improving testing efficiency.

[0031] Secondly, it boasts a high degree of automation and a smooth operation process. The hoisting and loading components utilize an electrically driven slide rail and telescopic cylinder, enabling automatic loading, unloading, and precise positioning of the trackless loader's articulated bogie. Combined with the coordinated movement of the steering limit frame and sliding base, the trackless loader's articulated bogie can automatically complete posture adjustments and workstation switching during testing. This design reduces the intensity of manual operation and minimizes positioning errors caused by human intervention, ensuring the reliability of test data.

[0032] In terms of testing accuracy, this device ensures accurate data acquisition through the collaborative operation of multiple sensors. The pressure and tension sensors in the tension-compression loading module, the torque sensor in the torsion test, and the displacement sensor in the bending test can monitor the response of the trackless loader's articulated bogie under different loads in real time. Combined with the precise control of the hydraulic telescopic cylinder and the electronically controlled drive system, the loading process is smooth and controllable, resulting in more repeatable and comparable test results.

[0033] Furthermore, the structural design of this test bench emphasizes rigidity and stability. The welded foundation of the integrated platform and support feet, the rigid connection between the hoisting support frame and the bending support frame, and the cooperation between the limit seat and the guide base together constitute a stable test platform, effectively suppressing vibration and deformation during the test process and providing a guarantee for high-precision mechanical testing.

[0034] Finally, the central steering platform in this device can be raised, lowered, and rotated, and in conjunction with the lateral movement of the sliding base, it allows the articulated bogie of the trackless loader to quickly align with different test modules. This design is particularly suitable for testing the articulated bogie of trackless loaders, adapting to diverse clamping and loading requirements and improving the versatility of the equipment. Attached Figure Description

[0035] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the accompanying drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0036] Figure 1 This is a schematic diagram of the overall external structure of the present invention in the main viewing direction; Figure 2 This is a schematic diagram of the overall external structure of the present invention from a top-down perspective; Figure 3 This is a schematic diagram of the overall external structure of the present invention from the left-side view direction; Figure 4 This is a schematic diagram of the overall external structure of the present invention from the right-side view direction; Figure 5 This is an isometric schematic diagram of the three-dimensional structure of the present invention; Figure 6 For the present invention along Figure 2 A schematic diagram of the internal structure cut along line AA. Figure 7 For the present invention along Figure 1 A schematic diagram of the internal structure cut along the middle BB line; Figure 8 For the present invention along Figure 1 A schematic diagram of the internal structure cut along the CC line.

[0037] In the diagram: 1-Integrated platform, 2-Supporting feet, 3-Lifting support frame, 4-Lifting top plate, 5-Lifting telescopic cylinder, 6-Lifting guide frame, 7-Electric drive slide rail, 8-Lifting slide block, 9-Lifting cable, 10-Arc-shaped hanging plate, 11-Positioning telescopic cylinder, 12-Arc-shaped lower pressure plate, 13-Integrated electrical box, 14-Integrated control console, 15-Guide base, 16-Limit seat, 17-Sliding base, 18-Drive threaded rod, 19-Avoidance slot, 20-Steering drive motor, 21-Steering wheel, 22-Lifting telescopic cylinder, 23-Center steering platform, 24-Supporting frame, 25-Mounting side plate 26-Compression top support head, 27-Pressure sensor, 28-Tension chuck, 29-Tension jaw, 30-Tension sensor, 31-Hydraulic telescopic cylinder, 32-Torsion test bench, 33-Test mounting bracket, 34-Positioning half cylinder, 35-Positioning clamp, 36-Torque sensor, 37-Torsion drive motor, 38-Bending support frame, 39-Vertical connecting plate, 40-Telescopic cylinder, 41-Bending pressure seat, 42-Displacement sensor, 43-Steering limit frame, 44-Limiting slot, 45-Sliding column seat, 46-Follow-up displacement seat, 47-Electrically controlled telescopic cylinder, 48-Support bracket. Detailed Implementation

[0038] The embodiments of the technical solution of the present invention will now be described in detail with reference to the accompanying drawings. These embodiments are merely illustrative of the technical solution of the present invention and are therefore intended to limit the scope of protection of the present invention.

[0039] like Figures 1 to 8As shown, the trackless loader articulated bogie comprehensive mechanical performance test bench includes an integrated platform 1, which is a horizontally set square platform. Several support feet 2 are welded on the circumferential outer wall of the integrated platform 1. The integrated platform 1 is equipped with hoisting and unloading components, tensile and compression testing components, bending testing components and torsion testing components.

[0040] The hoisting and unloading assembly includes a hoisting support frame 3, which is a U-shaped frame with the opening facing downwards. The lower end of the hoisting support frame 3 is welded to the longitudinal side of the upper surface of the integrated platform 1. A horizontal hoisting top plate 4 is welded to the middle of the upper end of the hoisting support frame 3. A vertical hoisting telescopic cylinder 5 is fixed at the center of the inner bottom surface of the hoisting top plate 4.

[0041] The lower telescopic cylinder of the hoisting telescopic cylinder 5 is fixed with a longitudinally extending hoisting guide frame 6. The cross-section of the hoisting guide frame 6 is C-shaped with the opening facing downwards. Each transverse inner wall of the hoisting guide frame 6 is fixed with an electric drive slide rail 7. A hoisting slide block 8 is slidably clamped between two electric drive slide rails 7. Four symmetrical hoisting cables 9 are fixed on the lower surface of the hoisting slide block 8. The lower ends of the two transversely opposite hoisting cables 9 are fixed with arc-shaped hanging plates 10.

[0042] A vertical positioning telescopic cylinder 11 is fixed in the middle of the lower surface of the lifting slide 8. An arc-shaped lower pressure plate 12 is fixed at the lower telescopic end of the positioning telescopic cylinder 11. By the arc-shaped lifting plate 10 supporting the articulated bogie of the trackless shovel and the arc-shaped lower pressure plate 12 pressing the upper surface of the articulated bogie of the trackless shovel, the stable lifting and positioning of the articulated bogie of the trackless shovel can be achieved.

[0043] An integrated electrical box 13 is fixed to one side of the upper surface of the integrated platform 1, and an integrated control console 14 is fixed to the other side of the upper surface of the integrated platform 1.

[0044] A guide base 15 is welded to the middle of the upper surface of the integrated platform 1. Two sets of horizontally extending and longitudinally symmetrical limiting seats 16 are fixed on the upper surface of the guide base 15. The limiting seats 16 are U-shaped seats with side openings. A sliding base 17 is slidably fitted between the two sets of limiting seats 16. The sliding base 17 is a horizontally set square seat.

[0045] Each limiting seat 16 is provided with a drive threaded rod 18, which passes through and is threadedly connected to the sliding base 17.

[0046] An clearance slot 19 is provided in the middle of the upper surface of the guide base 15.

[0047] A steering drive motor 20 is fixed in the middle of the lower surface of the sliding base 17. The steering drive motor 20 is located in the clearance slot 19. The output shaft end of the steering drive motor 20 passes upward through the sliding base 17 and is fixed to the steering wheel 21. A lifting telescopic cylinder 22 is fixed in the middle of the upper surface of the steering wheel 21. A central steering platform 23 is fixed at the upper telescopic end of the lifting telescopic cylinder 22. The central steering platform 23 is a square platform.

[0048] The clearance slot 19 is used to provide space for the installation and movement of the steering drive motor 20, and to prevent it from interfering with the guide base 15.

[0049] The tensile and compression test assembly includes a support frame 24, which is located between the integrated electrical box 13 and the guide base 15. The lower end of the support frame 24 is welded to the upper surface of the integrated platform 1.

[0050] A mounting side plate 25 is fixed at the edge of the upper surface of the support frame 24. A tension and compression loading module is telescopically provided on the transverse outer wall of the mounting side plate 25. The tension and compression loading module includes a compression top support head 26. A pressure sensor 27 is provided on the side end face of the compression top support head 26.

[0051] A tension chuck 28 is fixed on the outer peripheral wall near the end of the compression top support head 26. Four tension claws 29 are slidably extended and retracted on the tension chuck 28, and each tension claw 29 is provided with a tension sensor 30 at its end.

[0052] A hydraulic telescopic cylinder 31 is fixed in the middle of the upper surface of the support frame 24. The telescopic end of the hydraulic telescopic cylinder 31 passes through the mounting side plate 25 and is fixed to the back of the compression top support head 26.

[0053] The center steering platform 23 is also equipped with a tension and compression loading module on the transverse side wall opposite to the mounting side plate 25. A hydraulic telescopic cylinder 31 connected to the tension and compression loading module is also fixed on the other transverse outer wall of the center steering platform 23.

[0054] The torsion test assembly includes a torsion test stand 32, which is located on one longitudinal side of the integrated control console 14, and the lower end of the torsion test stand 32 is fixed to the upper surface of the integrated platform 1.

[0055] A test mounting frame 33 is fixed on the upper surface of the torsion test stand 32. A torsion loading module is rotatably mounted on the transverse side wall of the test mounting frame 33. The torsion loading module includes a positioning half-cylinder 34. Several positioning clamps 35 are telescopically mounted on the inner peripheral wall of the positioning half-cylinder 34. A torque sensor 36 is integrated on the positioning clamps 35.

[0056] A torsion drive motor 37 is fixed on the other side of the transverse outer wall of the test mounting bracket 33. The end of the output shaft of the torsion drive motor 37 passes through the test mounting bracket 33 and is fixed to the back of the positioning half cylinder 34.

[0057] A torsional loading module is also rotatably mounted on one of the longitudinal outer walls of the central steering platform 23, and the height of the torsional loading module is lower than that of the tension and compression loading module.

[0058] A torsion drive motor 37, which is connected to the torsion loading module, is also fixed on the longitudinal outer wall of the other side of the central steering platform 23.

[0059] The bending test assembly includes a bending support frame 38, which is an inverted L-shaped frame. The bending support frame 38 is located between the central turning platform 23 and the torsion test platform 32. The lower end of the bending support frame 38 is welded to the upper surface of the integrated platform 1.

[0060] A vertical connecting plate 39 is fixed to the upper end of the bending support frame 38, and the upper end of the vertical connecting plate 39 is welded to the inner top surface of the hoisting support frame 3.

[0061] A telescopic cylinder 40 is fixed in the middle of the upper surface of the bending support frame 38. The lower telescopic end of the telescopic cylinder 40 passes through the bending support frame 38 and is fixed with a bending pressure seat 41. A displacement sensor 42 is integrated on the bending pressure seat 41.

[0062] The upper surface of the integrated platform 1 is also fixed with a steering limit frame 43. The steering limit frame 43 is a U-shaped frame that is horizontally set and longitudinally open. The steering limit frame 43 is located above the two sets of limit seats 16.

[0063] A limit slot 44 is provided in the steering limit bracket 43, and a sliding column seat 45 is installed in the limit slot 44. A follower displacement seat 46 is fixed on the upper surface of the sliding column seat 45, and an electric telescopic cylinder 47 is fixed on the upper surface of the follower displacement seat 46. A support bracket 48 is fixed on the upper telescopic end of the electric telescopic cylinder 47.

[0064] When using this invention: First, the articulated bogie of the trackless loader is hoisted and positioned: control the hoisting telescopic cylinder 5 to extend downward, driving the hoisting guide frame 6 to descend to a suitable height; start the electric drive slide rail 7 to drive the hoisting slide block 8 to move longitudinally outward, placing the articulated bogie to be tested on two arc-shaped hanging plates 10; then control the positioning telescopic cylinder 11 to extend downward, so that the arc-shaped lower pressure plate 12 presses against the upper surface of the articulated bogie, achieving a stable clamping of the articulated bogie.

[0065] Subsequently, the lifting telescopic cylinder 5 retracts, raising the articulated bogie to the set height; the electric drive slide rail 7 is activated again, driving the lifting slide 8 to move longitudinally inward, bringing the end of the test articulated bogie closer to the central bogie platform 23; simultaneously, the electric telescopic cylinder 47 extends, driving the support bracket 48 to rise, supporting the bottom of the test articulated bogie. Depending on the test type, the end of the articulated bogie is picked up and clamped using a tension / compression loading module or a torsion loading module. Finally, the positioning telescopic cylinder 11 and the lifting telescopic cylinder 5 reset sequentially, completing the loading and initial positioning of the articulated bogie.

[0066] Next, the attitude and position of the articulated bogie are adjusted: The lifting telescopic cylinder 22 is activated, driving the central steering platform 23 to move up and down, ensuring the articulated bogie and the test module are horizontally aligned; the steering drive motor 20 is activated, driving the central steering platform 23 to rotate via the steering wheel 21, so that the other end of the articulated bogie faces another set of tension / compression loading modules or torsional loading modules. During rotation, the follower displacement seat 46 on the steering limit frame 43 synchronously slides along the limit slot 44 following the central steering platform 23, ensuring that the support bracket 48 always provides stable support to the articulated bogie. Then, the threaded rod 18 is driven to rotate, causing the sliding base 17 to move laterally along the limit seat 16, so that the articulated bogie is clamped between two tension / compression loading modules or two torsional loading modules.

[0067] The multi-functional mechanical performance testing stage then begins: if one end of the articulated bogie is clamped by the tension-compression loading module during the loading stage, and the other end is also clamped by the tension-compression loading module after the workstation adjustment, then a tensile-compression test can be performed. During the tensile-compression test, the hydraulic telescopic cylinder 31 pushes the tension-compression loading modules on the center steering table 23 and the support frame 24 to move towards each other; in the compression test, the compression top supports 26 on both sides press against both ends of the articulated bogie, and the pressure sensor 27 collects the compression force data in real time; in the tensile test, the tension claw 29 first opens to clamp the articulated bogie, and then the hydraulic telescopic cylinder 31 pulls in the opposite direction, and the tension sensor 30 records the tensile force parameters.

[0068] If one end of the articulated bogie is clamped by the torsion loading module during the loading stage, and the other end is also clamped by the torsion loading module after the workstation adjustment, then a torsion test can be performed. During the torsion test, two torsion drive motors 37 are started respectively to drive the positioning half-cylinder 34 to rotate. The torque data of the articulated bogie is collected by the torque sensor 36 on the positioning chuck 35 to complete the torsion performance test.

[0069] During the bending test, the telescopic cylinder 40 extends downward, and the bending pressure seat 41 applies downward pressure to the articulated bogie. The displacement sensor 42 simultaneously collects the downward displacement and deformation data.

[0070] After all tests are completed, the sliding base 17 drives the articulated bogie back to the initial loading position; the hoisting and unloading assembly operates in the reverse process of loading, releasing the articulated bogie and lifting it, transferring it to the designated unloading area, thus ending the entire test cycle.

[0071] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be covered within the scope of the claims and specification of the present invention.

Claims

1. A comprehensive mechanical performance testing platform for the articulated bogie of a trackless loader, characterized in that: The system includes an integrated platform, on which tensile compression testing components and torsion testing components are respectively provided; The upper surface of the integrated platform is welded with a guide base in the middle. Two sets of longitudinally symmetrical limiting seats are fixed on the upper surface of the guide base. A sliding base is slidably engaged between the two sets of limiting seats. A central steering platform that can be raised, lowered and rotated is provided on the sliding base. The tensile and compression testing assembly includes a support frame welded to the upper surface of the integrated platform, a mounting side plate fixed to the upper surface of the support frame, and a tensile and compressive loading module telescopically provided on the transverse outer wall of the mounting side plate. The tension-compression loading module includes a compression top support head, and a pressure sensor is provided on the side end face of the compression top support head; A tension chuck is fixed on the outer peripheral wall near the end of the compression top support head. Four tension claws are slidably and telescopically provided on the tension chuck. Tension sensors are provided on the tension claws. The tension and compression loading module is also telescopically installed on the transverse side wall of the central steering platform; The torsion test assembly includes a torsion test platform welded to the upper surface of the integrated platform, and a test mounting bracket is fixed to the upper surface of the torsion test platform. The test mounting frame has a torsion loading module rotatably mounted on its transverse sidewall. The torsion loading module includes a positioning half-cylinder, and a number of positioning clamps are telescopically mounted on the inner circumferential wall of the positioning half-cylinder. A torque sensor is integrated on the positioning clamps. The torsional loading module is also rotatably mounted on the longitudinal outer wall of the central steering platform.

2. The comprehensive mechanical performance testing platform for the articulated bogie of a trackless loader according to claim 1, characterized in that: The integrated platform is also equipped with a hoisting and unloading assembly, which includes a hoisting support frame. The hoisting support frame is a U-shaped frame with the opening facing downwards. The lower end of the hoisting support frame is welded to the longitudinal side of the upper surface of the integrated platform. A horizontal hoisting top plate is welded to the middle of the upper end of the hoisting support frame. A vertical hoisting telescopic cylinder is fixed at the center of the inner bottom surface of the hoisting top plate. The lower telescopic cylinder of the hoisting telescopic cylinder is fixed with a longitudinally extending hoisting guide frame. The cross-section of the hoisting guide frame is C-shaped with the opening facing downwards. Each transverse inner wall of the hoisting guide frame is fixed with an electric drive slide rail. A hoisting slide block is slidably engaged between two of the electric drive slide rails. Four symmetrical hoisting cables are fixed to the lower surface of the hoisting slide block. The lower ends of two transversely opposite hoisting cables are fixed with arc-shaped hanging plates.

3. The comprehensive mechanical performance testing platform for the articulated bogie of a trackless loader according to claim 1, characterized in that: An integrated electrical box is fixed to one side of the upper surface of the integrated platform, and an integrated control console is fixed to the other side of the upper surface of the integrated platform.

4. The comprehensive mechanical performance testing platform for the articulated bogie of a trackless loader according to claim 1, characterized in that: Each of the limiting seats is rotatably provided with a drive threaded rod, which passes through and is threadedly connected to the sliding base; A steering drive motor is fixed in the middle of the lower surface of the sliding base. The output shaft of the steering drive motor passes upward through the sliding base and is fixed to a steering wheel. A lifting and telescopic cylinder is fixed in the middle of the upper surface of the steering wheel. The upper telescopic end of the lifting and telescopic cylinder is fixed to the center of the lower surface of the central steering platform. An clearance slot is provided in the middle of the upper surface of the guide base, and the steering drive motor is located in the clearance slot.

5. The comprehensive mechanical performance testing platform for the articulated bogie of a trackless loader according to claim 1, characterized in that: The height of the torsional loading module is lower than that of the tension / compression loading module; A hydraulic telescopic cylinder is fixed in the middle of the upper surface of the support frame. The telescopic end of the hydraulic telescopic cylinder passes through the mounting side plate and is fixed to the back of the compression top support head. A hydraulic telescopic cylinder connected to the tension-compression loading module is also fixed on the other side of the transverse outer wall of the central steering platform.

6. The comprehensive mechanical performance testing platform for the articulated bogie of a trackless shovel loader according to claim 1, characterized in that: A torsion drive motor is fixed on the other side of the transverse outer wall of the test mounting frame. The end of the output shaft of the torsion drive motor passes through the test mounting frame and is fixed to the back of the positioning half cylinder. A torsion drive motor, which is connected to the torsion loading module, is also fixed on the longitudinal outer wall of the other side of the central steering platform.

7. The comprehensive mechanical performance testing platform for the articulated bogie of a trackless shovel loader according to claim 2, characterized in that: The integrated platform is also equipped with a bending test assembly, which includes a bending support frame. The bending support frame is an inverted L-shaped frame. A vertical connecting plate is fixed to the upper end of the bending support frame. The upper end of the vertical connecting plate is welded to the inner top surface of the hoisting support frame. A telescopic cylinder is fixed in the middle of the upper surface of the bending support frame. The lower telescopic end of the telescopic cylinder passes through the bending support frame and is fixed with a bending pressure seat. A displacement sensor is integrated on the bending pressure seat.

8. The comprehensive mechanical performance testing platform for the articulated bogie of a trackless loader according to claim 1, characterized in that: The upper surface of the integrated platform is also fixed with a steering limit frame, which is a horizontally set U-shaped frame with a longitudinal opening, and the steering limit frame is set above the two sets of limit seats.

9. The comprehensive mechanical performance testing platform for the articulated bogie of a trackless shovel loader according to claim 8, characterized in that: The steering limit frame has a limit slot, and a sliding column seat is installed in the limit slot. A follower displacement seat is fixed on the upper surface of the sliding column seat, and an electrically controlled telescopic cylinder is fixed on the upper surface of the follower displacement seat. A support bracket is fixed on the upper telescopic end of the electrically controlled telescopic cylinder.

10. The comprehensive mechanical performance testing platform for the articulated bogie of a trackless shovel loader according to claim 2, characterized in that: A vertical positioning telescopic cylinder is fixed in the middle of the lower surface of the lifting slide. An arc-shaped lower pressure plate is fixed at the lower telescopic end of the positioning telescopic cylinder. The arc-shaped lower pressure plate is arranged opposite to the arc-shaped lifting plate and is used to clamp the articulated bogie of the trackless shovel.

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