CN209745732U - Fatigue test system that traffic load was applyed - Google Patents
Fatigue test system that traffic load was applyed Download PDFInfo
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- CN209745732U CN209745732U CN201920258522.XU CN201920258522U CN209745732U CN 209745732 U CN209745732 U CN 209745732U CN 201920258522 U CN201920258522 U CN 201920258522U CN 209745732 U CN209745732 U CN 209745732U
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- 239000010720 hydraulic oil Substances 0.000 claims abstract description 16
- 239000003921 oil Substances 0.000 claims description 133
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Abstract
The utility model provides a fatigue test system applied by traffic load, which comprises a first upright post, a second upright post, a first beam, an actuator, a loading shaft, a wheel set, a hydraulic oil cylinder system, a detection element and a data processing unit, wherein two ends of the first beam are respectively and fixedly connected with the first upright post and the second upright post, a slide rail is arranged on the first beam, a horizontal adjusting piece pushes the actuator to horizontally move along the slide rail, the actuator is fixedly connected with one end of the loading shaft, the other end of the loading shaft is fixedly connected with the wheel set, the wheel set is contacted with a road surface structure, the test system can well simulate the dynamic load of a road vehicle acting on the road surface and the roadbed structure in the driving process, and meets the simulation and detection of fatigue failure of the roadbed and the road surface under the action of traffic load.
Description
Technical Field
the disclosure relates to the technical field of fatigue tests, in particular to a fatigue test system for traffic load application.
Background
The statements in this section merely provide background information related to the present disclosure and may not necessarily constitute prior art.
the increasing of trucks and private cars leads to the increasing load borne by roadbed and pavement structures, which directly leads to the damage of roadbeds and the early damage of pavements, and the fatigue damage problem of roadbeds and pavements plays a key role in the long-term stability of roadbed structures, so that the long-term service performance of roadbeds and pavements needs to be evaluated by simulating the tire pressure load of road traffic.
The actual condition that needs real simulation real traffic load road bed and road surface interact among the model experiment, accomplish the control of factors such as different gross rail loads, the fatigue damage of deep research road bed and road surface, on the basis of model experiment, obtain road bed and the whole deformation parameter of road surface under the different operating modes, the stress of different position points in road bed and the road surface structure, meet an urgent need the problem of solving with this fatigue damage mechanism of comprehensive research road bed, although also there are some current model test systems, the applicant thinks that current model test system is urgent: (1) most of the existing model experiments are small-scale models, and are influenced by material similarity, boundary conditions and a dynamic loading model, and the experimental structure is greatly different from the actual driving working condition; (2) most of loading equipment adopted in the existing fatigue test is vertical loading of a single shaft fixed point, but the actual road surface always experiences horizontal repeated motion of a vehicle, and the loading mode cannot accurately simulate the actual situation.
Disclosure of Invention
In order to solve the defects of the prior art, the disclosure provides a fatigue test system and a method for applying traffic load, which can well simulate the dynamic load of road vehicles acting on different axle weights and different driving conditions on a road surface and a roadbed structure in the driving process and can meet the simulation and detection of fatigue failure of the roadbed and the road surface under the action of the traffic load.
In order to achieve the purpose, the following technical scheme is adopted in the disclosure:
A fatigue test system for traffic load application comprises a main body frame, an actuating mechanism, a hydraulic oil cylinder system, a roadbed and pavement structure and a control system;
The main body frame comprises a reaction frame, a horizontal adjusting piece and a slide rail, wherein the reaction frame comprises a first upright post, a second upright post and a first cross beam, one end of the first cross beam is vertically and fixedly connected with the first upright post, the other end of the first cross beam is vertically and fixedly connected with the second upright post, one end of the horizontal adjusting piece is vertically and fixedly connected with the first upright post, and the slide rail is arranged on the first cross beam;
The actuator comprises an actuator, a loading shaft and a wheel set, the actuator comprises a first connecting end and a second connecting end, the first connecting end is connected with the horizontal adjusting piece through a bolt, the actuator is arranged on a slide rail, the horizontal adjusting piece pushes the actuator to horizontally move along the slide rail, the second connecting end is fixedly connected with one end of the loading shaft through a bolt, and the other end of the loading shaft is fixedly connected with the wheel set through a bolt; the fixed connection mode can also be other fixed connection modes such as riveting, welding, bonding and the like;
The roadbed and pavement structure comprises a pavement structure and a roadbed structure, the wheel set is in contact with the pavement structure, and the hydraulic oil cylinder system is respectively connected with the loading shaft and the horizontal adjusting piece;
Control system includes detecting element and data processing unit, inside road surface structure and roadbed structure were arranged respectively in to detecting element, detecting element is connected through wired or wireless mode with data processing unit, detecting element can gather information such as stress, meeting an emergency and the acceleration change law of whole deformation parameter, different position points of road surface structure and roadbed structure, data processing unit receives the information of above-mentioned collection, the fatigue damage degree of integrated analysis roadbed structure and road surface structure, data processing unit still is connected with hydraulic system for vertical and transverse load that collection actuating mechanism received.
as some possible implementations, the first column includes a first connection end and further includes a reaction frame foundation, and the first connection end is fixedly connected with one end of the reaction frame foundation through a hexagon bolt, or other fixing connection manners, such as riveting, bonding, welding, and the like.
As some possible realization modes, the device also comprises an embankment structure, wherein the embankment structure is arranged between the pavement structure and the roadbed structure, and the other end of the reaction frame foundation is embedded into the roadbed structure.
as possible some realization modes, the device also comprises a test body groove, wherein the roadbed structure, the embankment structure and the pavement structure are placed in the test body groove, and the top of the test body groove is provided with a visual window made of glass materials for observing the change of materials in the test body groove.
As some possible implementations, the set of wheels includes at least one wheel that is wrapped with a rubber tire.
as possible implementation manners, the horizontal adjusting piece is composed of a moving box body, top fixing oil cylinders, pulleys and a horizontal pushing oil cylinder, the four top fixing oil cylinders are installed on the upper portion of the moving box body, the moving box body is tightly matched with the first cross beam, the pulleys are installed on the upper surface and the lower surface of the moving box body, the box body can move through the rolling of the pulleys, the side surface of the moving box body is connected with a piston rod joint of the horizontal pushing oil cylinder, a cylinder barrel of the horizontal pushing oil cylinder is fixedly connected with the first upright post, the horizontal pushing oil cylinder provides power for horizontal movement, an actuator is connected with the moving box body, and the horizontal moving speed of the actuator is 0-6 km/h.
As some possible implementation manners, the horizontal adjusting member may further include a ball screw, a linear guide, a speed reducer, a servo motor, a first hydraulic cylinder, a piston, and a hydraulic rod, where the servo motor and the speed reducer are disposed at one end of the first hydraulic cylinder and connected to the ball screw, the ball screw and the linear guide are disposed inside the first hydraulic cylinder, the ball screw is disposed on the linear guide, the other end of the ball screw is connected to the hydraulic rod through the piston, the hydraulic rod is connected to the first connecting end, and the horizontal moving speed of the actuator is 0 to 6 km/h.
As some possible implementation manners, the hydraulic oil cylinder system comprises an oil pump, a motor, a pressure control valve, an oil tank, a first oil pipe, a second oil pipe, a third oil pipe and a pressure gauge, wherein the oil tank is connected with the oil pump through the first oil pipe, the motor is connected with the oil pump, the pressure control valve is connected with the oil pump in parallel, and the oil pump is connected with the first hydraulic cylinder through the second oil pipe; the cooling system is connected with the hydraulic oil cylinder system and used for controlling the temperature of the hydraulic oil cylinder system.
As some possible implementation manners, the oil pump includes a first oil pump and a second oil pump, the motor includes a first motor and a second motor, the pressure control valve includes a first pressure control valve and a second pressure control valve, the pressure gauge includes a first pressure gauge and a second pressure gauge, and further includes a fourth oil pipe, the oil tank is connected with the first oil pump through the first oil pipe, the first motor is connected with the first oil pump, the first pressure control valve is connected with the first oil pump in parallel, and the first oil pump is connected with the first hydraulic cylinder through the second oil pipe and used for controlling the horizontal movement of the horizontal adjusting member; the oil tank is connected with the second oil pump through a third oil pipe, the second motor is connected with the second oil pump, the second pressure control valve is connected with the second oil pump in parallel, the loading shaft comprises a second hydraulic cylinder, the second oil pump is connected with the second hydraulic cylinder through a fourth oil pipe and used for controlling the vertical movement of the loading shaft, and the vertical distance adjusting range of the loading shaft is 1100 mm; the first oil pipe, the second oil pipe, the third oil pipe and the fourth oil pipe respectively comprise an oil conveying pipe and an oil return pipe.
As possible some implementation manners, the device further comprises a material in-and-out crane, wherein the material in-and-out crane comprises a main body frame, a hoisting motor, a horizontal moving motor, a single-arm rotating motor, a hoisting arm and a traction rope, the material in-and-out crane is fixedly connected to the indoor ground, and the hoisting motor is connected with the traction rope and used for hoisting a heavy object; the horizontal moving motor and the single-arm rotating motor are respectively connected with the lifting arm and used for horizontal moving and rotating of the lifting arm.
As some possible implementation manners, the control system further comprises a strong current power cabinet and a weak current power cabinet, and the strong current power cabinet and the weak current power cabinet are used for supplying power to power components such as motors.
compared with the prior art, the beneficial effect of this disclosure is:
The hydraulic control system controls the horizontal adjusting piece to act on the actuator, and finally acts on the pavement and the roadbed structure through the wheel set, so that the horizontal reciprocating motion of the wheel set of the vehicle on the inner structure is realized, and the driving pair of the vehicle is truly simulated; the influence of the road surface and the roadbed structure.
According to the hydraulic loading device, the hydraulic control system controls the vertical movement of the loading shaft, and provides power loads under different axle weights and different driving conditions, so that the power loads acting on a road surface and a roadbed system in the driving process of a road vehicle can be better simulated, and the simulation and detection of fatigue damage of the road surface and the roadbed structure under the action of different traffic loads are realized.
The stand and the one end fixed connection on reaction frame basis, during the other end embedding roadbed structure on reaction frame basis, the gravity of the soil body was used for sharing the stand of reaction frame the counter-force of the vertical direction that receives when the experiment simulation.
Roadbed structure, embankment structure and road surface structure place in the test body inslot, set up the visual window of glass material at test body groove top to survey the change of interior material of test groove in real time.
the wheel set is wrapped with the rubber tire, so that the contact condition of a real vehicle tire and a road surface can be simulated.
according to the horizontal adjusting device, the speed reducer and the servo motor are arranged on the horizontal adjusting piece, so that the horizontal moving speed of the ball screw is 0-6km/h, and the horizontal moving of the wheels can simulate multiple horizontal repeated movements of a road surface in a real situation.
according to the vertical load simulation device, the vertical movement of the loading shaft is controlled through the hydraulic system, and the vertical distance adjusting range is 1100mm, so that the vertical load generated by wheels on a road surface and a roadbed structure is effectively simulated.
This openly through setting up material business turn over crane, it is narrow and small to have solved the site space, and the inconvenient problem of business turn over material has saved manpower and materials, has improved experimental efficiency, has reduced the experiment cost.
The roadbed model, which accords with the real situation proportion, is provided by arranging the roadbed structure, the embankment structure and the pavement structure, and a foundation is laid for the accuracy of system simulation data.
this openly can gather information such as the whole deformation parameter of road surface structure and roadbed structure, the stress of different position points, meet an emergency and acceleration change law through detecting element, the information that the data processing unit received above-mentioned collection, the fatigue damage degree of integrated analysis roadbed structure and road surface structure to long-term performance for evaluating roadbed and road surface provides the theoretical foundation.
Drawings
Fig. 1 is a schematic view of a fatigue test system for traffic load application according to embodiment 1 of the present disclosure.
Fig. 2 is a schematic view of a horizontal adjustment member of a fatigue testing system for traffic load application according to embodiment 2 of the disclosure.
1-a first upright; 2-a first beam; 3-reaction frame foundation; 4-an actuator; 5-a hydraulic cylinder system; 6-loading shaft; 7-wheel set; 8-a horizontal adjustment; 9-a slide rail; 10-a cooling system; 11-material in and out of the crane; 12-a data processing unit; 13-indoor ground; 14-data transmission cable; 15-roadbed structure; 16-embankment structure; 17-lifting the boom; 18-a second tubing; 19-a fourth tubing; 20-a second column; 21-pavement structure; 22-detection element.
Detailed Description
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present disclosure. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
Example 1:
as shown in fig. 1, the embodiment 1 of the present disclosure introduces a fatigue test system for traffic load application, which includes a main body frame, an actuator, a hydraulic cylinder system, a roadbed and road surface structure, and a control system;
The main body frame comprises a reaction frame, a horizontal adjusting piece 8 and a slide rail 9, the reaction frame comprises a first upright post 1, a second upright post 20 and a first cross beam 2, one end of the first cross beam 2 is vertically and fixedly connected with the first upright post 1 through a bolt, the other end of the first cross beam 3 is vertically and fixedly connected with the second upright post 20 through a bolt, one end of the horizontal adjusting piece 8 is vertically and fixedly connected with the first upright post 1 through a bolt, and the slide rail 9 is arranged on the first cross beam 3;
The actuator comprises an actuator 4, a loading shaft 6 and a wheel set 7, wherein the actuator 4 comprises a first connecting end and a second connecting end, the first connecting end is fixedly connected with the horizontal adjusting piece 8 through a bolt, the actuator 4 is arranged on a slide rail 9, the horizontal adjusting piece 8 pushes the actuator 4 to horizontally move along the slide rail 9, the second connecting end is fixedly connected with one end of the loading shaft 6 through a bolt, the other end of the loading shaft 6 is fixedly connected with the wheel set 7 through a bolt, the wheel set is a standard wheel set and meets the national wheel standard, and the fixed connection mode can be other fixed connection modes such as riveting, welding and bonding;
the roadbed and road surface structure comprises a road surface structure 21 and a roadbed structure 15, the wheel set 7 is in contact with the road surface structure 21, and the hydraulic oil cylinder system 5 is respectively connected with the loading shaft 6 and the horizontal adjusting piece 8;
the control system comprises a detection element 22 and a data processing unit 12, wherein the detection element 22 is respectively arranged in a road surface structure 21 and a roadbed structure 15, the detection element 22 is connected with the data processing unit 12 through a data transmission cable, a wireless transceiver chip can also be arranged in the detection element to realize wireless transmission of data, the detection element 22 can acquire information such as integral deformation parameters of the road surface structure and the roadbed structure, stress, strain and acceleration change rules of different positions, the detection element comprises a strain gauge capable of testing the stress and the strain, a Nippon Tokyo tester PM, PMF or PMFLS series strain gauge can be selected, the data processing unit is also connected with a hydraulic system and used for acquiring vertical and transverse loads borne by an actuating mechanism, the data processing unit 12 further comprises a vehicle speed sensor capable of monitoring vehicle speed and acceleration, the data processing unit 12 comprises at least one computer, the fatigue damage degree analysis device is used for receiving information collected by the detection element and comprehensively analyzing the fatigue damage degree of the roadbed structure and the pavement structure.
the first upright post 1 comprises a first connecting end and a reaction frame foundation 3, and the first connecting end is fixedly connected with one end of the reaction frame foundation 3 through a hexagon bolt; the anti-collision device further comprises an embankment structure 16, wherein the embankment structure 16 is arranged between the pavement structure 21 and the roadbed structure 15, and the other end of the reaction frame foundation 3 is embedded into the roadbed structure 15; the roadbed structure 15, the embankment structure 16 and the pavement structure 21 are placed in the test body groove, and a visual window made of glass materials is arranged at the top of the test body groove and used for observing the change of materials in the test groove; the wheel set 7 comprises at least one wheel of standard, a rubber tire is wrapped outside the wheel, and the wheel and the rubber tire meet the national wheel standard.
The horizontal adjusting part consists of a ball screw, a linear guide rail, a speed reducer, a servo motor, a first hydraulic cylinder, a piston and a hydraulic rod, wherein the servo motor and the speed reducer are arranged at one end of the first hydraulic cylinder and are connected with the ball screw; the hydraulic oil cylinder system comprises an oil pump, a motor, a pressure control valve, an oil tank, a first oil pipe, a second oil pipe, a third oil pipe and a pressure gauge, wherein the oil tank is connected with the oil pump through the first oil pipe; the cooling system 10 is connected with the hydraulic oil cylinder system 5 and used for controlling the temperature of the hydraulic oil cylinder system 5.
the oil pump comprises a first oil pump and a second oil pump, the motor comprises a first motor and a second motor, the pressure control valve comprises a first pressure control valve and a second pressure control valve, the pressure gauge comprises a first pressure gauge and a second pressure gauge, the oil pump further comprises a fourth oil pipe, the oil tank is connected with the first oil pump through the first oil pipe, the first motor is connected with the first oil pump, the first pressure control valve is connected with the first oil pump in parallel, and the first oil pump is connected with the ball screw through the second oil pipe and used for controlling the horizontal movement of the horizontal adjusting piece; the oil tank and the second oil pump are connected through a third oil pipe, the second motor is connected with the second oil pump, the second pressure control valve is connected with the second oil pump in parallel, the loading shaft comprises a second hydraulic cylinder, the second oil pump is connected with the second hydraulic cylinder through a fourth oil pipe and used for controlling the vertical movement of the loading shaft, and the vertical distance adjusting range of the loading shaft is 1100 mm.
still include material business turn over crane 11, material business turn over crane 11 includes main body frame, lifts by crane motor, horizontal migration motor, single armed rotating electrical machines, plays davit 17 and haulage rope, material business turn over crane fixed connection is on indoor ground, it is connected with the haulage rope to lift by crane the motor for the lifting by crane of heavy object, horizontal migration motor and single armed rotating electrical machines are connected with the davit 17 respectively, are used for the horizontal migration and the rotation of the davit of playing.
The control system also comprises a strong current power cabinet and a weak current power cabinet which are used for supplying power to power components such as a motor.
The disclosure also provides a fatigue test method for traffic load application, which is characterized by comprising the following steps:
(1) Collecting the weight and the running speed of different vehicle types, and setting the loading range of the vertical load and the horizontal moving position;
(2) the control system controls the hydraulic system to work, a certain numerical value of horizontal load and vertical load are given to the actuator, the actuator is in contact with a road surface roadbed structure through the wheel set, the horizontal movement speed of the actuator is controlled through the speed reducer and the servo motor to achieve the loading position of the vertical load, and the horizontal movement speed of the actuator is 0-6 Km/h;
(3) The detection element detects the whole deformation parameters of the road surface structure and the roadbed structure, and the stress, strain and acceleration change rule information of different position points in real time, and transmits the detected information to the control system in real time;
(4) The control system comprehensively analyzes the road surface damage condition of the road surface roadbed structure under the action of different waveform repeated loads according to the vertical load value, the vehicle speed, the road surface compression times and the deformation and strain information of the road surface roadbed structure received by the road surface roadbed structure.
example 2:
As shown in fig. 2, the embodiment 2 of the present disclosure introduces a fatigue testing system for traffic load application, which includes a main body frame, an actuator, a hydraulic cylinder system, a roadbed and road surface structure, and a control system;
The main body frame comprises a reaction frame, a horizontal adjusting piece 8 and a slide rail 9, the reaction frame comprises a first upright post 1, a second upright post 20 and a first cross beam 3, one end of the first cross beam 3 is vertically and fixedly connected with the first upright post 1 through a bolt, the other end of the first cross beam 3 is vertically and fixedly connected with the second upright post 20 through a bolt, one end of the horizontal adjusting piece 8 is vertically and fixedly connected with the first upright post 1 through a bolt, and the slide rail 9 is arranged on the first cross beam 3;
The actuator comprises an actuator 4, a loading shaft 6 and a wheel set 7, wherein the actuator 4 comprises a first connecting end and a second connecting end, the first connecting end is fixedly connected with the horizontal adjusting piece 8 through a bolt, the actuator 4 is arranged on a slide rail 9, the horizontal adjusting piece 8 pushes the actuator 4 to horizontally move along the slide rail 9, the second connecting end is fixedly connected with one end of the loading shaft 6 through a bolt, the other end of the loading shaft 6 is fixedly connected with the wheel set 7 through a bolt, the wheel set is a standard wheel set and meets the national wheel standard, and the fixed connection mode can be other fixed connection modes such as riveting, welding and bonding;
The roadbed and road surface structure comprises a road surface structure 21 and a roadbed structure 15, the wheel set 7 is in contact with the road surface structure 21, and the hydraulic oil cylinder system 5 is respectively connected with the loading shaft 6 and the horizontal adjusting piece 8;
The control system comprises a detection element 22 and a data processing unit 12, wherein the detection element 22 is respectively arranged in a road surface structure 21 and a roadbed structure 15, the detection element 22 is connected with the data processing unit 12 through a data transmission cable, a wireless transceiver chip can also be arranged in the detection element to realize wireless transmission of data, the detection element 22 can acquire information such as integral deformation parameters of the road surface structure and the roadbed structure, stress, strain and acceleration change rules of different positions, the detection element comprises a strain gauge capable of testing the stress and the strain, a Nippon Tokyo tester PM, PMF or PMFLS series strain gauge can be selected, the data processing unit is also connected with a hydraulic system and used for acquiring vertical and transverse loads borne by an actuating mechanism, the data processing unit 12 further comprises a vehicle speed sensor capable of monitoring vehicle speed and acceleration, the data processing unit 12 comprises at least one computer, the fatigue damage degree analysis device is used for receiving information collected by the detection element and comprehensively analyzing the fatigue damage degree of the roadbed structure and the pavement structure.
The first upright post 1 comprises a first connecting end and a reaction frame foundation 3, and the first connecting end is fixedly connected with one end of the reaction frame foundation 3 through a hexagon bolt; the anti-collision device further comprises an embankment structure 16, wherein the embankment structure 16 is arranged between the pavement structure 21 and the roadbed structure 15, and the other end of the reaction frame foundation 3 is embedded into the roadbed structure 15; the roadbed structure 15, the embankment structure 16 and the pavement structure 21 are placed in the test body groove, and a visual window made of glass materials is arranged at the top of the test body groove and used for observing the change of materials in the test groove; the wheel set 7 comprises at least one wheel of standard, a rubber tire is wrapped outside the wheel, and the wheel and the rubber tire meet the national wheel standard.
the horizontal adjusting piece consists of a moving box body, top fixing oil cylinders, pulleys and horizontal pushing oil cylinders, wherein the four top fixing oil cylinders are arranged at the upper part of the moving box body to realize the tight fit of the moving box body and a cross beam, the pulleys arranged on the upper surface and the lower surface of the moving box body can meet the movement of the box body through the rolling of the pulleys, the side surfaces of the moving box body are connected with a piston rod joint of the horizontal pushing oil cylinder, the cylinder barrel of the horizontal pushing oil cylinder is fixedly connected with a first upright post, the horizontal pushing oil cylinder provides horizontal pushing force, an actuator is connected with the moving box body, and the horizontal moving speed of the actuator is 0; the hydraulic oil cylinder system comprises an oil pump, a motor, a pressure control valve, an oil tank, a first oil pipe, a second oil pipe, a third oil pipe and a pressure gauge, wherein the oil tank is connected with the oil pump through the first oil pipe; the cooling system 10 is connected with the hydraulic oil cylinder system 5 and used for controlling the temperature of the hydraulic oil cylinder system 5.
The oil pump comprises a first oil pump and a second oil pump, the motor comprises a first motor and a second motor, the pressure control valve comprises a first pressure control valve and a second pressure control valve, the pressure gauge comprises a first pressure gauge and a second pressure gauge, the oil pump further comprises a fourth oil pipe, the oil tank is connected with the first oil pump through the first oil pipe, the first motor is connected with the first oil pump, the first pressure control valve is connected with the first oil pump in parallel, and the first oil pump is connected with the horizontal propelling oil cylinder through the second oil pipe and used for controlling the horizontal movement of the horizontal adjusting piece; the oil tank and the second oil pump are connected through a third oil pipe, the second motor is connected with the second oil pump, the second pressure control valve is connected with the second oil pump in parallel, the loading shaft comprises a second hydraulic cylinder, the second oil pump is connected with the second hydraulic cylinder through a fourth oil pipe and used for controlling the vertical movement of the loading shaft, and the vertical distance adjusting range of the loading shaft is 1100 mm.
Still include material business turn over crane 11, material business turn over crane 11 includes main body frame, lifts by crane motor, horizontal migration motor, single armed rotating electrical machines, plays davit 17 and haulage rope, material business turn over crane fixed connection is on indoor ground, it is connected with the haulage rope to lift by crane the motor for the lifting by crane of heavy object, horizontal migration motor and single armed rotating electrical machines are connected with the davit 17 respectively, are used for the horizontal migration and the rotation of the davit of playing.
the control system also comprises a strong current power cabinet and a weak current power cabinet which are used for supplying power to power components such as a motor.
The disclosure also provides a fatigue test method for traffic load application, which is characterized by comprising the following steps:
(1) Collecting the weight and the running speed of different vehicle types, and setting the loading range of the vertical load and the horizontal moving position;
(2) The control system controls the hydraulic system to work, a certain numerical value of horizontal load and vertical load are given to the actuator, the actuator is in contact with a road surface roadbed structure through the wheel set, the horizontal movement speed of the actuator is controlled through the speed reducer and the servo motor to achieve the loading position of the vertical load, and the horizontal movement speed of the actuator is 0-6 Km/h;
(3) The detection element detects the whole deformation parameters of the road surface structure and the roadbed structure, and the stress, strain and acceleration change rule information of different position points in real time, and transmits the detected information to the control system in real time;
(4) The control system comprehensively analyzes the road surface damage condition of the road surface roadbed structure under the action of different waveform repeated loads according to the vertical load value, the vehicle speed, the road surface compression times and the deformation and strain information of the road surface roadbed structure received by the road surface roadbed structure.
the above description is only a preferred embodiment of the present disclosure and is not intended to limit the present disclosure, and various modifications and changes may be made to the present disclosure by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present disclosure should be included in the protection scope of the present disclosure.
Claims (9)
1. A fatigue test system applied by traffic load is characterized by comprising a main body frame, an actuating mechanism, a hydraulic oil cylinder system, a roadbed and pavement structure and a control system;
The main body frame comprises a reaction frame, a horizontal adjusting piece and a slide rail, wherein the reaction frame comprises a first upright post, a second upright post and a first cross beam, one end of the first cross beam is vertically and fixedly connected with the first upright post, the other end of the first cross beam is vertically and fixedly connected with the second upright post, one end of the horizontal adjusting piece is vertically and fixedly connected with the first upright post, and the slide rail is arranged on the first cross beam;
the actuator comprises an actuator, a loading shaft and a wheel set, the actuator comprises a first connecting end and a second connecting end, the first connecting end is connected with the horizontal adjusting piece, the actuator is arranged on the slide rail, the horizontal adjusting piece pushes the actuator to horizontally move along the slide rail, the second connecting end is fixedly connected with one end of the loading shaft, and the other end of the loading shaft is fixedly connected with the wheel set;
the roadbed and pavement structure comprises a pavement structure and a roadbed structure, the wheel set is in contact with the pavement structure, and the hydraulic oil cylinder system is respectively connected with the loading shaft and the horizontal adjusting piece;
the control system comprises a detection element and a data processing unit, wherein the detection element is respectively arranged in the road surface structure and the roadbed structure, the detection element is connected with the data processing unit in a wired or wireless mode, and the data processing unit is also connected with a hydraulic system and used for acquiring vertical and horizontal loads borne by the actuating mechanism.
2. The system for testing fatigue in response to a traffic load according to claim 1, wherein the first pillar comprises a first connecting end and further comprises a reaction frame base, and the first connecting end is fixedly connected to one end of the reaction frame base.
3. a traffic load applied fatigue test system as set forth in claim 2, further comprising an embankment structure interposed between the road surface structure and the roadbed structure, and the other end of the reaction frame foundation being embedded in the roadbed structure.
4. a fatigue test system for traffic load application according to claim 3, further comprising a test body tank, wherein the roadbed structure, the embankment structure and the pavement structure are placed in the test body tank, and a visual window made of glass is arranged at the top of the test body tank for observing the change of the material in the test body tank.
5. A traffic load applied fatigue test system as in claim 1, wherein said set of wheels comprises at least one wheel, said wheel being wrapped with a rubber tire.
6. The system for fatigue test applied by traffic load according to claim 1, wherein the horizontal adjustment member comprises a ball screw, a linear guide, a speed reducer, a servo motor, a first hydraulic cylinder, a piston and a hydraulic rod, the servo motor and the speed reducer are arranged at one end of the first hydraulic cylinder and connected with the ball screw, the ball screw and the linear guide are arranged inside the first hydraulic cylinder, the ball screw is arranged on the linear guide, the other end of the ball screw is connected with the hydraulic rod through the piston, the hydraulic rod is connected with the first connection end, and the horizontal moving speed of the actuator is 0-6 km/h.
7. The system for testing fatigue of traffic load application according to claim 6, wherein the hydraulic cylinder system comprises an oil pump, a motor, a pressure control valve, an oil tank, a first oil pipe, a second oil pipe, a third oil pipe and a pressure gauge, the oil tank and the oil pump are connected through the first oil pipe, the motor is connected with the oil pump, the pressure control valve is connected with the oil pump in parallel, the oil pump is connected with the first hydraulic cylinder through the second oil pipe, and the system further comprises a cooling system, and the cooling system is connected with the hydraulic cylinder system and used for controlling the temperature of the hydraulic cylinder system.
8. The system according to claim 7, wherein the oil pump comprises a first oil pump and a second oil pump, the motor comprises a first motor and a second motor, the pressure control valve comprises a first pressure control valve and a second pressure control valve, the pressure gauge comprises a first pressure gauge and a second pressure gauge, and the system further comprises a fourth oil pipe, the oil tank and the first oil pump are connected through the first oil pipe, the first motor is connected with the first oil pump, the first pressure control valve is connected with the first oil pump in parallel, and the first oil pump is connected with the first hydraulic cylinder through the second oil pipe;
the oil tank and the second oil pump are connected through a third oil pipe, the second motor is connected with the second oil pump, the second pressure control valve is connected with the second oil pump in parallel, the loading shaft comprises a second hydraulic cylinder, the second oil pump is connected with the second hydraulic cylinder through a fourth oil pipe and used for controlling the vertical movement of the loading shaft, and the vertical distance adjusting range of the loading shaft is 1100 mm.
9. The system for fatigue test of traffic load application according to claim 1, further comprising a material in and out crane, said material in and out crane comprising a main body frame, a hoisting motor, a horizontal movement motor, a single-arm rotation motor, a lifting arm and a traction rope, said material in and out crane being fixedly connected to the indoor floor, said hoisting motor being connected to the traction rope for lifting of the heavy object; the horizontal moving motor and the single-arm rotating motor are respectively connected with the lifting arm and used for horizontal moving and rotating of the lifting arm.
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| CN201920258522.XU CN209745732U (en) | 2019-02-28 | 2019-02-28 | Fatigue test system that traffic load was applyed |
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| CN201920258522.XU CN209745732U (en) | 2019-02-28 | 2019-02-28 | Fatigue test system that traffic load was applyed |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109708983A (en) * | 2019-02-28 | 2019-05-03 | 山东大学 | A kind of fatigue test system and method for traffic loading application |
| CN111504764A (en) * | 2020-03-30 | 2020-08-07 | 北京航空航天大学 | Force transmission device matched with universal tester and used for simulating walking of human foot |
| CN113075037A (en) * | 2021-03-26 | 2021-07-06 | 武汉建工集团股份有限公司 | Intelligent road construction traffic load engineering detection test system and method |
| CN116754391A (en) * | 2023-08-08 | 2023-09-15 | 常州市佳瑞精密机械有限公司 | Pressure testing device and method for saliva suction tube production |
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2019
- 2019-02-28 CN CN201920258522.XU patent/CN209745732U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109708983A (en) * | 2019-02-28 | 2019-05-03 | 山东大学 | A kind of fatigue test system and method for traffic loading application |
| CN111504764A (en) * | 2020-03-30 | 2020-08-07 | 北京航空航天大学 | Force transmission device matched with universal tester and used for simulating walking of human foot |
| CN113075037A (en) * | 2021-03-26 | 2021-07-06 | 武汉建工集团股份有限公司 | Intelligent road construction traffic load engineering detection test system and method |
| CN116754391A (en) * | 2023-08-08 | 2023-09-15 | 常州市佳瑞精密机械有限公司 | Pressure testing device and method for saliva suction tube production |
| CN116754391B (en) * | 2023-08-08 | 2023-11-03 | 常州市佳瑞精密机械有限公司 | Pressure testing device and method for saliva suction tube production |
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