Trackless loader articulated bogie comprehensive mechanical performance test bench

Abstract

This invention relates to a comprehensive mechanical performance testing platform for articulated bogies of trackless loaders, encompassing the field of mechanical performance testing technology. It includes an integrated platform with tensile / compression and torsional testing components. The tensile / compression testing components include a support frame with mounting side plates fixed to its upper surface. Tension / compression loading modules are telescopically mounted on the mounting side plates. Each loading module includes a compression top support head with a pressure sensor mounted on its side end face. A tension chuck is fixed to the outer peripheral wall of the compression top support head near its end, and four tension jaws with sliding and telescopic movement are mounted on the chuck, each equipped with a tension sensor. This testing platform solves the problems of dispersed testing, low efficiency, reliance on manual labor, insufficient accuracy, platform instability, and poor versatility inherent in traditional technologies for comprehensive mechanical performance testing of articulated bogies of trackless loaders.

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:

[0003] 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.

[0004] 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.

[0005] Thirdly, the sensor configuration of traditional testing equipment is relatively simple, 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.

[0006] 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.

[0007] 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.

[0008] The existence of the above problems makes the mechanical property test of the articulated bogie of the trackless scraper unable to achieve the ideal effect of engineering application in efficiency, accuracy, reliability and universality, etc., and seriously affects the product development cycle and quality control level, so an integrated, automated, high-precision and universal test device is needed to solve many pain points in the prior art. SUMMARY

[0009] In view of the defects in the prior art, the present application provides a comprehensive mechanical property test bench for articulated bogie of trackless scraper to solve the problems of test dispersion, low efficiency, artificial dependence, insufficient accuracy, unstable platform and poor universality in the comprehensive mechanical property test of the articulated bogie of the trackless scraper in the prior art.

[0010] To achieve the above-mentioned purpose, the present application provides the following technical solutions:

[0011] The comprehensive mechanical property test bench for articulated bogie of trackless scraper comprises an integrated platform, and a tensile compression test assembly and a torsion test assembly are respectively arranged on the integrated platform.

[0012] As an optimized scheme, a guide base is welded in the middle of the upper surface of the integrated platform, two groups of longitudinally symmetrical limiting seats are fixed on the upper surface of the guide base, a sliding base is slidingly clamped between the two groups of limiting seats, and a center steering platform that can be lifted and rotated is arranged on the sliding base.

[0013] As an optimized scheme, the tensile compression test assembly comprises a support rack welded on the upper surface of the integrated platform, an installation side plate is fixed on the upper surface of the support rack, and a tensile and compressive loading module is telescopically arranged on the lateral outer wall of the installation side plate.

[0014] As an optimized scheme, the tensile and compressive loading module comprises a compression top support head, and a pressure sensor is arranged on the side end surface of the compression top support head.

[0015] As an optimized scheme, a tensile chuck is fixed on the outer peripheral wall close to the distal end of the compression top support head, four tensile clamping jaws are slidingly and telescopically arranged on the tensile chuck, and a tensile force sensor is arranged on the tensile clamping jaws.

[0016] As an optimized scheme, the tensile and compressive loading module is also telescopically arranged on the lateral side wall of the center steering platform.

[0017] As an optimized scheme, the torsion test assembly comprises a torsion test pedestal welded on the upper surface of the integrated platform, and a test installation rack is fixed on the upper surface of the torsion test pedestal.

[0018] As an optimization scheme, a torsion loading module is rotatably arranged on the lateral side wall of the test mounting frame, the torsion loading module comprises a positioning half cylinder, and a plurality of positioning clamps are telescopically arranged on the inner circumferential wall of the positioning half cylinder, and a torque sensor is integrated on the positioning clamps.

[0019] As an optimization scheme, the torsion loading module is also rotatably arranged on the longitudinal outer wall of the center turning table.

[0020] As an optimization scheme, the integrated platform is also provided with a lifting feeding and discharging assembly, the lifting feeding and discharging assembly comprises a lifting support frame, the lifting support frame is a U-shaped frame with an opening facing downward, the lower end of the lifting support frame is welded to the upper surface of the integrated platform on one longitudinal side, a horizontal lifting top plate is welded to the upper end of the lifting support frame, and a vertical lifting telescopic cylinder is fixed to the inner bottom surface of the lifting top plate.

[0021] As an optimization scheme, the lower telescopic cylinder of the lifting telescopic cylinder is fixed with a longitudinally extending lifting guide frame, the cross section of the lifting guide frame is a C-shaped frame with an opening facing downward, an electric drive sliding rail is fixed to each of the lateral inner walls of the lifting guide frame, a lifting sliding seat is slidably clamped between the two electric drive sliding rails, four pairs of lifting cables are fixed to the lower surface of the lifting sliding seat, and arc-shaped lifting plates are fixed to the lower ends of the two laterally opposite lifting cables.

[0022] As an optimization scheme, 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.

[0023] As an optimization scheme, a driving threaded rod is rotatably arranged in each of the limiting seats, and the driving threaded rod penetrates through and is threadedly connected to the sliding base.

[0024] As an optimization scheme, a turning driving motor is fixed to the middle of the lower surface of the sliding base, the output shaft of the turning driving motor penetrates through the sliding base upward and is fixed with a steering disc, a lifting telescopic cylinder is fixed to the middle of the upper surface of the steering disc, and the upper telescopic end of the lifting telescopic cylinder is fixed to the center of the lower surface of the center turning table.

[0025] As an optimization scheme, an avoiding slot is formed in the middle of the upper surface of the guide base, and the turning driving motor is arranged in the avoiding slot.

[0026] As an optimization scheme, the height of the torsion loading module is lower than that of the tension and compression loading module.

[0027] As an optimization scheme, the upper surface of the support rack is fixed with a hydraulic telescopic cylinder in the middle, the telescopic end of the hydraulic telescopic cylinder penetrates through the mounting side plate and is fixed to the back of the compression top support head.

[0028] As an optimization scheme, the other side of the center turning table is also fixed with a hydraulic telescopic cylinder connected with the tension-compression loading module.

[0029] As an optimization scheme, the other side of the test mounting frame is fixed with a torsion drive motor, and the output shaft end of the torsion drive motor penetrates through the test mounting frame and is fixed to the back of the positioning half cylinder.

[0030] As an optimization scheme, the other side of the center turning table is also fixed with a torsion drive motor drivingly connected with the torsion loading module.

[0031] As an optimization scheme, the integrated platform is further provided with a bending test assembly, the bending test assembly comprises a bending support frame, the bending support frame is an inverted L-shaped frame, the upper surface of the bending support frame is fixed with a vertical connecting plate at the end, and the upper end of the vertical connecting plate is welded to the inner top surface of the hoisting support frame.

[0032] As an optimization scheme, the upper surface of the bending support frame is fixed with a telescopic cylinder in the middle, the lower telescopic end of the telescopic cylinder penetrates through the bending support frame and is fixed with a bending lower pressing seat, and the bending lower pressing seat is integrated with a displacement sensor.

[0033] As an optimization scheme, the upper surface of the integrated platform is further fixed with a turning limiting frame, the turning limiting frame is a horizontally arranged and longitudinally opened U-shaped frame, and the turning limiting frame is arranged above the two groups of limiting seats.

[0034] As an optimization scheme, a limiting slot is arranged in the turning limiting frame, a sliding column seat is clamped in the limiting slot, a follow-up displacement seat is fixed to the upper surface of the sliding column seat, an electric control telescopic cylinder is fixed to the upper surface of the follow-up displacement seat, and a support clamping seat is fixed to the upper telescopic end of the electric control telescopic cylinder.

[0035] As an optimization scheme, the lower surface of the hoisting sliding seat is fixed with a vertical positioning telescopic cylinder in the middle, the lower telescopic end of the positioning telescopic cylinder is fixed with an arc-shaped lower pressing plate, and the arc-shaped lower pressing plate is arranged opposite to the arc-shaped hoisting plate and used for clamping a trackless scraper articulated turning frame.

[0036] Compared with the prior art, the present application has the following advantages:

[0037] Firstly, the test bench realizes efficient integration of multiple mechanical property tests. In traditional tests, multiple dedicated devices are often needed to complete tensile, compressive, bending and torsional tests, while the device can complete all test items at one station through an adjustable center steering table and modular test components. This not only significantly reduces the equipment space, but also avoids the repeated clamping problem caused by the transfer of the articulated steering frame of the trackless shovel between different devices, greatly improving the test efficiency.

[0038] Secondly, the degree of automation is high, and the operation process is smooth. The lifting and unloading assembly adopts electric drive sliding rails and telescopic cylinders to realize automatic taking and placing and precise positioning of the articulated steering frame of the trackless shovel; combined with the coordinated movement of the steering limiting frame and the sliding base, the posture adjustment and station switching of the articulated steering frame of the trackless shovel during the test can be automatically completed. This design reduces the manual operation intensity and reduces the positioning error caused by human intervention, ensuring the reliability of the test data.

[0039] In terms of test accuracy, the device ensures the accuracy of data acquisition through the cooperative work of multiple sensors. The pressure and tension sensors in the tension and compression loading module, the torque sensor in the torsional test and the displacement sensor in the bending test can monitor the response of the articulated steering frame of the trackless shovel under different loads in real time. In addition, the precise control of the hydraulic telescopic cylinder and the electric control system makes the loading process stable and controllable, and the test results are more repeatable and comparable.

[0040] In addition, the structural design of the test bench focuses on rigidity and stability. The welded base of the integrated platform and the support foot, the rigid connection of the lifting support frame and the bending support frame, and the cooperation of the limiting seat and the guide base together form a stable test platform, effectively suppressing the vibration and deformation during the test, providing a guarantee for high-precision mechanical testing.

[0041] Finally, the center steering table in the device can be lifted and rotated, and combined with the lateral movement of the sliding base, the articulated steering frame of the trackless shovel can be quickly aligned with different test modules. This design is particularly suitable for testing the articulated steering frame of the trackless shovel, and can adapt to diversified clamping and loading requirements, improving the versatility of the equipment. BRIEF DESCRIPTION OF DRAWINGS

[0042] In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the following will briefly introduce the drawings needed to be used in the specific embodiments or prior art description. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, each element or part is not necessarily drawn according to the actual proportion.

[0043] Figure 1 It is an external overall structure schematic diagram of the present application in the front direction.

[0044] Figure 2 This is a schematic diagram of the overall external structure of the present invention from a top-down perspective;

[0045] Figure 3 This is a schematic diagram of the overall external structure of the present invention from the left-side view direction;

[0046] Figure 4 This is a schematic diagram of the overall external structure of the present invention from the right-side view direction;

[0047] Figure 5 This is an isometric schematic diagram of the three-dimensional structure of the present invention;

[0048] Figure 6 For the present invention along Figure 2 A schematic diagram of the internal structure cut along line AA in the middle;

[0049] Figure 7 For the present invention along Figure 1 A schematic diagram of the internal structure cut along the middle BB line;

[0050] Figure 8 For the present invention along Figure 1 A schematic diagram of the internal structure cut along the CC line.

[0051] 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

[0052] 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.

[0053] like Figures 1 to 8 As 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.

[0054] 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.

[0055] 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.

[0056] 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.

[0057] 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.

[0058] 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.

[0059] Each limiting seat 16 is provided with a drive threaded rod 18, which passes through and is threadedly connected to the sliding base 17.

[0060] An clearance slot 19 is provided in the middle of the upper surface of the guide base 15.

[0061] A steering drive motor 20 is fixed in the middle of the lower surface of the sliding base 17, and is arranged in the avoiding notch 19. The output shaft of the steering drive motor 20 penetrates the sliding base 17 upwardly and is fixed with a steering disc 21. The upper surface of the steering disc 21 is fixed with a lifting telescopic cylinder 22. The upper end of the lifting telescopic cylinder 22 is fixed with a central steering platform 23. The central steering platform 23 is a square platform.

[0062] The avoiding notch 19 is used to provide space for the installation and movement of the steering drive motor 20, so as to avoid interference with the guide base 15.

[0063] The tensile and compressive test assembly comprises a support rack 24 arranged between the integrated electrical box 13 and the guide base 15. The lower end of the support rack 24 is welded to the upper surface of the integrated ground 1.

[0064] The upper surface of the support rack 24 is fixed with a mounting side plate 25. A tensile and compressive loading module is arranged on the lateral outer wall of the mounting side plate 25 in a telescopic manner. The tensile and compressive loading module comprises a compression jacking head 26. A pressure sensor 27 is arranged on the side end face of the compression jacking head 26.

[0065] The outer peripheral wall close to the end of the compression jacking head 26 is fixed with a tensile chuck 28. Four tensile clamping jaws 29 are arranged on the tensile chuck 28 in a telescopic manner. The end of each tensile clamping jaw 29 is provided with a tension sensor 30.

[0066] The upper surface of the support rack 24 is fixed with a hydraulic telescopic cylinder 31. The telescopic end of the hydraulic telescopic cylinder 31 penetrates the mounting side plate 25 and is fixed to the back of the compression jacking head 26.

[0067] The lateral outer wall of the central steering platform 23 opposite to the mounting side plate 25 is also provided with a tensile and compressive loading module in a telescopic manner. The other lateral outer wall of the central steering platform 23 is also fixed with a hydraulic telescopic cylinder 31 connected with the tensile and compressive loading module.

[0068] The torsion test assembly comprises a torsion test pedestal 32 arranged on one longitudinal side of the integrated control console 14. The lower end of the torsion test pedestal 32 is fixed to the upper surface of the integrated ground 1.

[0069] The upper surface of the torsion test pedestal 32 is fixed with a test mounting frame 33. A torsion loading module is arranged on the lateral side wall of the test mounting frame 33 in a rotatable manner. The torsion loading module comprises a positioning half cylinder 34. A plurality of positioning collets 35 are arranged on the inner peripheral wall of the positioning half cylinder 34 in a telescopic manner. A torque sensor 36 is integrated on the positioning collet 35.

[0070] A torsion driving motor 37 is fixed on the other lateral outer wall of the test mounting frame 33, and the output shaft end of the torsion driving motor 37 penetrates through the test mounting frame 33 and is fixed to the back of the positioning half cylinder 34.

[0071] A torsion loading module is also rotatably arranged on one of the longitudinal outer walls of the center turning platform 23, and the height of the torsion loading module is lower than that of the tension-compression loading module.

[0072] A torsion driving motor 37 is also fixed on the other longitudinal outer wall of the center turning platform 23 and is in driving connection with the torsion loading module.

[0073] The bending test assembly comprises a bending-compression support frame 38, which is an inverted L-shaped frame and is arranged between the center turning platform 23 and the torsion test platform 32, and the lower end of the bending-compression support frame 38 is welded to the upper surface of the integrated platform 1.

[0074] The upper end of the vertical connecting plate 39 is welded to the inner top surface of the hoisting support frame 3.

[0075] The upper surface of the bending-compression support frame 38 is fixed with a telescopic cylinder 40, the lower telescopic end of which penetrates through the bending-compression support frame 38 and is fixed with a bending lower pressing seat 41, and the bending lower pressing seat 41 is integrated with a displacement sensor 42.

[0076] The upper surface of the integrated platform 1 is also fixed with a turning limiting frame 43, which is a U-shaped frame arranged horizontally and longitudinally opened, and the turning limiting frame 43 is arranged above the two groups of limiting seats 16.

[0077] The turning limiting frame 43 is provided with a limiting slot 44, and the limiting slot 44 is clamped with a sliding column seat 45, the upper surface of the sliding column seat 45 is fixed with a follow-up displacement seat 46, the upper surface of the follow-up displacement seat 46 is fixed with an electric control telescopic cylinder 47, and the upper telescopic end of the electric control telescopic cylinder 47 is fixed with a supporting clamping seat 48.

[0078] When the present application is used:

[0079] First, the trackless scraper articulated bogie is hoisted and positioned: the hoisting telescopic cylinder 5 is controlled to extend downward, the hoisting guide frame 6 is lowered to an appropriate height, the electric driving slide rail 7 is started, the hoisting slide seat 8 is driven to move outward longitudinally, the articulated bogie to be tested is placed on the two arc-shaped hoisting plates 10, then the positioning telescopic cylinder 11 is controlled to extend downward, the arc-shaped lower pressing plate 12 is pressed against the upper surface of the articulated bogie, and the stable clamping of the articulated bogie is realized.

[0080] Subsequently, the lifting telescopic cylinder 5 is contracted to lift the articulated bogie to a set height; the electric drive slide rail 7 is started again to drive the lifting slide 8 to move longitudinally inward, so that the end of the test articulated bogie is close to the center steering platform 23; at the same time, the electric control telescopic cylinder 47 is controlled to extend to drive the support clamp 48 to rise and support the bottom of the test articulated bogie. According to different test types, the tension-compression loading module or the torsion loading module is used to connect and clamp the end of the articulated bogie. Finally, the positioning telescopic cylinder 11 and the lifting telescopic cylinder 5 are reset in sequence to complete the loading and preliminary positioning of the articulated bogie.

[0081] Next, the posture and station of the articulated bogie are adjusted: the lifting telescopic cylinder 22 is started to drive the center steering platform 23 to move up and down to ensure that the articulated bogie and the test module are in a horizontal alignment state; the steering drive motor 20 is started to rotate the center steering platform 23 through the steering wheel 21, so that the other end of the articulated bogie is opposite to another set of tension-compression loading modules or torsion loading modules. In the rotating process, the follow-up displacement seat 46 on the steering limiting frame 43 synchronously follows the center steering platform 23 to slide along the limiting slot 44 to ensure that the support clamp 48 always stably supports the articulated bogie. Subsequently, the threaded rod 18 is driven to rotate to drive the sliding base 17 to move transversely along the limiting seat 16, so that the articulated bogie is clamped between two tension-compression loading modules or two torsion loading modules.

[0082] Subsequently, the multifunctional mechanical property test stage is entered: if the end of the articulated bogie in the loading stage is clamped by the tension-compression loading module and the other end is also clamped by the tension-compression loading module after the station adjustment, the tension-compression test can be performed. When the tension-compression test is performed, the hydraulic telescopic cylinder 31 pushes the tension-compression loading modules on the center steering platform 23 and the support platform 24 to move towards each other; in the compression test, the two compression jacks 26 press against the ends of the articulated bogie, and the pressure sensor 27 collects the compression force data in real time; in the tension test, the tension clamping jaw 29 first opens to clamp the articulated bogie, and then the hydraulic telescopic cylinder 31 is reversely pulled to record the tension force parameters by the tension sensor 30.

[0083] If the end of the articulated bogie in the loading stage is clamped by the torsion loading module and the other end is also clamped by the torsion loading module after the station adjustment, the torsion test can be performed. When the torsion test is performed, the two torsion drive motors 37 are respectively started to drive the positioning half cylinder 34 to rotate, and the torque sensor 36 on the positioning clamp head 35 collects the torque data of the articulated bogie to complete the torsion performance detection.

[0084] When the bending test is performed, the telescopic cylinder 40 is extended downward, the bending lower pressing seat 41 applies a downward pressure to the articulated bogie, and the displacement sensor 42 synchronously collects the lower pressing displacement and deformation data.

[0085] 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.

[0086] 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 test bench for comprehensive mechanical performance of articulated steering frame of trackless scraper, characterized in that: The integrated platform is provided with a tensile compression test assembly and a torsion test assembly respectively; The upper surface of the integrated platform is welded with a guide base, the upper surface of the guide base is fixed with two groups of longitudinally symmetrical limiting seats, the two groups of limiting seats are slidingly clamped with a sliding base, and the sliding base is provided with a centrally rotating table which can be lifted and lowered; The tensile compression test assembly comprises a support rack welded on one side of the upper surface of the integrated platform, the upper surface of the support rack is fixed with a mounting side plate, and the transversely outer wall of the mounting side plate is provided with a tensile and compressive loading module which can be extended and retracted; The tensile and compressive loading module comprises a compression top support head, and the side end surface of the compression top support head is provided with a pressure sensor; The outer peripheral wall of the compression top support head near the end is fixed with a tensile chuck, the four tensile clamping jaws are slidingly and telescopically arranged on the tensile chuck, and the tensile clamping jaws are provided with a tension sensor; The transversely lateral wall of the centrally rotating table is also provided with the tensile and compressive loading module which can be extended and retracted; The torsion test assembly comprises a torsion test pedestal welded on the other side of the upper surface of the integrated platform, and the upper surface of the torsion test pedestal is fixed with a test mounting rack; The torsion loading module is rotatably arranged on the transversely lateral wall of the test mounting rack, the torsion loading module comprises a positioning half cylinder, a plurality of positioning collets are telescopically arranged on the inner peripheral wall of the positioning half cylinder, and the positioning collets are integrated with a torque sensor; The longitudinally outer wall of the centrally rotating table is also rotatably provided with the torsion loading module; The integrated platform is also provided with a hoisting feeding and discharging assembly, the hoisting feeding and discharging assembly comprises a hoisting support frame, the hoisting support frame is a U-shaped frame with an opening facing downward, the lower end of the hoisting support frame is welded on the upper surface of the integrated platform on one side in the longitudinal direction, the upper end of the hoisting support frame is welded with a horizontal hoisting top plate in the middle, the inner bottom surface of the hoisting top plate is fixed with a vertical hoisting telescopic cylinder at the center; The lower part of the hoisting telescopic cylinder is fixed with a longitudinally extending hoisting guide frame, the cross section of the hoisting guide frame is a C-shaped frame with an opening facing downward, and the electrically driven sliding rails are respectively fixed on each transversely inner wall of the hoisting guide frame, the hoisting sliding seat is slidingly and telescopically arranged between the two electrically driven sliding rails, the lower surface of the hoisting sliding seat is fixed with four pairs of symmetrical hoisting cables, and the lower ends of the two transversely opposite hoisting cables are fixed with an arc-shaped hoisting plate; The upper surface of the integrated platform is also fixed with a turning limiting frame, the turning limiting frame is a horizontally arranged U-shaped frame with a longitudinal opening, and the turning limiting frame is arranged above the two groups of limiting seats; A limiting slot is formed in the turning limiting frame, a sliding column seat is clamped in the limiting slot, a follow-up 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 follow-up displacement seat, and a support clamping seat is fixed on the upper part of the electrically controlled telescopic cylinder; The lower surface of the hoisting sliding seat is fixed with a vertical positioning telescopic cylinder in the middle, the lower part of the positioning telescopic cylinder is fixed with an arc-shaped pressing plate, and the arc-shaped pressing plate is arranged opposite to the arc-shaped hoisting plate for clamping the articulated turning frame of the trackless scraper. According to different test types, the end of the articulated bogie is clamped by the tension-compression loading module or the torsion loading module of the central turning table, and the other end of the articulated bogie is opposite to the other tension-compression loading module or the torsion loading module by driving the central turning table to rotate. In the rotating process, the follow-up displacement seat on the turning limiting frame synchronously follows the central turning table to slide along the limiting slot.

2. The test bench according to claim 1, characterized in that it comprises: The upper surface of the integrated platform is fixed with an integrated electrical box on one side and an integrated console on the other side.

3. The test bench according to claim 1, characterized in that it comprises: A driving threaded rod is rotatably arranged in each limiting seat, and the driving threaded rod penetrates through and is threadedly connected to the sliding base; A turning driving motor is fixed to the middle of the lower surface of the sliding base, the output shaft of the turning driving motor penetrates through the sliding base upwardly and is fixed with a turning disc, the middle of the upper surface of the turning disc is fixed with a lifting telescopic cylinder, and the upper telescopic end of the lifting telescopic cylinder is fixed to the lower surface of the central turning table; The middle of the upper surface of the guide base is provided with an avoiding slot, and the turning driving motor is arranged in the avoiding slot.

4. The trackless scraper articulated bogie comprehensive mechanical performance test bench according to claim 1, characterized in that: The height of the torsion loading module is lower than that of the tension-compression loading module. A hydraulic telescopic cylinder is fixed to the middle of the upper surface of the support stand, and the telescopic end of the hydraulic telescopic cylinder penetrates through the mounting side plate and is fixed to the back surface of the compression top support head. The other side of the lateral outer wall of the central turning table is also fixed with a hydraulic telescopic cylinder connected with the tension-compression loading module.

5. The trackless scraper articulated bogie comprehensive mechanical performance test bench according to claim 1, characterized in that: A torsion driving motor is fixed to the other side of the lateral outer wall of the test mounting frame, the output shaft of the torsion driving motor penetrates through the test mounting frame and is fixed to the back surface of the positioning half cylinder. The other side of the longitudinal outer wall of the central turning table is also fixed with a torsion driving motor in transmission connection with the torsion loading module.

6. The trackless scraper articulated bogie comprehensive mechanical performance test bench according to claim 1, characterized in that: The integrated platform is also provided with a bending test assembly, the bending test assembly comprises a bending pressure support frame, the bending pressure support frame is an inverted L-shaped frame, the end of the upper surface of the bending pressure support frame is fixed with a vertical connecting plate, and the upper end of the vertical connecting plate is welded to the inner top surface of the hoisting support frame; The middle of the upper surface of the bending pressure support frame is fixed with a telescopic cylinder, the lower telescopic end of the telescopic cylinder penetrates through the bending pressure support frame and is fixed with a bending lower pressing seat, and a displacement sensor is integrated on the bending lower pressing seat. The middle of the upper surface of the bending pressure support frame is fixed with a telescopic cylinder, the lower telescopic end of the telescopic cylinder penetrates through the bending pressure support frame and is fixed with a bending lower pressing seat, and a displacement sensor is integrated on the bending lower pressing seat.

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