WO2023179164A1 - Through-type bridge durability wheel load experimental device - Google Patents

Through-type bridge durability wheel load experimental device Download PDF

Info

Publication number
WO2023179164A1
WO2023179164A1 PCT/CN2022/143577 CN2022143577W WO2023179164A1 WO 2023179164 A1 WO2023179164 A1 WO 2023179164A1 CN 2022143577 W CN2022143577 W CN 2022143577W WO 2023179164 A1 WO2023179164 A1 WO 2023179164A1
Authority
WO
WIPO (PCT)
Prior art keywords
loading
wheel
track
flywheel
experimental
Prior art date
Application number
PCT/CN2022/143577
Other languages
French (fr)
Chinese (zh)
Inventor
冯晋祥
张鹏
管志光
张吉卫
贾倩
阮久宏
杨福广
王刚
冯冰
国兴玉
吴清珍
王慧君
韩鹰
Original Assignee
山东交通学院
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 山东交通学院 filed Critical 山东交通学院
Publication of WO2023179164A1 publication Critical patent/WO2023179164A1/en

Links

Images

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M5/00—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings
    • G01M5/0008—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings of bridges
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N3/02—Details
    • G01N3/04—Chucks
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/0058—Kind of property studied
    • G01N2203/0069—Fatigue, creep, strain-stress relations or elastic constants
    • G01N2203/0073—Fatigue
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/02—Details not specific for a particular testing method
    • G01N2203/06—Indicating or recording means; Sensing means
    • G01N2203/067—Parameter measured for estimating the property
    • G01N2203/0676—Force, weight, load, energy, speed or acceleration

Definitions

  • the invention relates to a through-type bridge durability wheel load experimental device, belonging to the technical field of test equipment.
  • the bridge durability wheel load test device is a special equipment for testing and detecting the wheel load test of the durability of solid bridges and pavement materials and structures of different lengths.
  • there is no bridge durability test equipment in the existing technology and there are only very few bridge fatigue test equipment.
  • existing bridge fatigue testing equipment has the following problems: there are limitations on the length of experimental bridges, fatigue testing can only be performed on shorter bridges, and durability wheel loading cannot be performed on longer solid bridges and pavement materials and structures.
  • the existing bridge fatigue test equipment uses a large flywheel to drive a long connecting rod to drive the loading vehicle to reciprocate. The bridge fatigue test is ineffective and inefficient, and it is difficult to meet the needs of engineering and technical research, and the diameter of the flywheel is large. , the length of the connecting rod is longer, and the equipment itself occupies a large area.
  • the purpose of the present invention is to overcome the above-mentioned shortcomings of the prior art and provide a through-type bridge durability wheel load test device, aiming to solve the problem that existing bridge durability test equipment cannot implement larger lengths of physical bridges and pavement materials and structures. Durability wheel load test issues.
  • the through-type bridge durability wheel load experimental device includes: a support mechanism, an installation mechanism, a flywheel, a second power mechanism, a driving mechanism, a loading mechanism and a second track;
  • the support mechanism has an experimental space, and the experimental space has a length direction , the experimental space is open at both ends in the length direction;
  • the installation mechanism is arranged in the experimental space and connected to the support mechanism;
  • the flywheel is arranged vertically above the installation mechanism and connected to the installation mechanism, and the vertical plane where the flywheel is located Parallel to the length direction of the experimental space;
  • the second power mechanism is connected to the flywheel to provide power for the flywheel;
  • the second rail is provided on the bottom surface of the installation mechanism, and the movement direction of the second rail is consistent with the length direction of the experimental space;
  • the loading mechanism is arranged below the second track and moves back and forth along the second track;
  • the loading mechanism includes a rolling wheel, which rolls the experimental bridge along the length direction of the experimental space; one end of the driving mechanism It is dynamically connected
  • Figure 1 is a schematic front view of the through-type bridge durability wheel load experimental device provided by the embodiment of the present invention.
  • Figure 2 is a schematic left view of the through-type bridge durability wheel load experimental device provided by the embodiment of the present invention.
  • Figure 3 is a schematic top view of the through-type bridge durability wheel load experimental device provided by the embodiment of the present invention.
  • Figure 4 is a schematic diagram of the support mechanism of the through-type bridge durability wheel load experimental device provided by the embodiment of the present invention.
  • Figure 5 is a schematic diagram of the installation mechanism and other supported mechanisms of the through-type bridge durability wheel load experimental device provided by the embodiment of the present invention.
  • Second track 2. Installation mechanism, 3. Column, 4. Cross beam, 5. Longitudinal beam, 6. Swing arm, 7. Swing arm base, 8. Triangle bracket, 9. Upper link, 10. Main motor, 11. Flywheel, 12. Reducer, 13. Lift, 14. Lift servo motor, 15. Lift reducer, 16. Control panel, 17. Bridge, 20.
  • Loading vehicle 21. Rigid suspension, 22. Suspension shaft, 24. Wheel hub, 25. Rolling wheel, 26. Lower connecting rod, 27. Connecting rod, 28. Air bag, 29. Air bag box seat, 30. Loading wheel box seat, 31. Loading wheel, 32. Axle Pin sensor, 33, experimental space.
  • the through-type bridge durability wheel load experimental device includes: support mechanism, installation mechanism 2, flywheel 11, second track 1, loading mechanism, driving mechanism and second power mechanism; the support mechanism has an experimental space 33.
  • the experimental space 33 has a length direction, and the two ends of the experimental space 33 are open in the length direction;
  • the installation mechanism 2 is arranged in the experimental space 33 and connected to the support mechanism;
  • the flywheel 11 is arranged vertically above the installation mechanism 2 and connected to the installation mechanism 2 , the vertical plane where the flywheel 11 is located is parallel to the length direction of the experimental space 33;
  • the second track 1 is set on the bottom surface of the installation mechanism 2, and the movement direction of the second track 1 is consistent with the length direction of the experimental space 33;
  • the loading mechanism is set on the second It moves back and forth below the track 1 and along the second track 1;
  • the loading mechanism includes a rolling wheel 25, which rolls along the length direction of the experimental space 33; one end of the driving mechanism is dynamically connected to the flywheel 11, and the other end is dynamically connected to the loading mechanism.
  • the flywheel 11, the driving mechanism, the second track 1, and the loading mechanism are integrated into the installation mechanism 2.
  • the installation mechanism 2 is located at the upper part of the experimental space 33. All the mechanisms used for the experiment are arranged above the experimental space 33 and are not arranged in the experimental space 33. surrounding; therefore, the spatial size of the experimental space 33 in the horizontal direction will not be limited by each institution. In addition, both ends of the experimental space 33 in the length direction are open, so that the experimental space 33 is not restricted in the length direction, thereby realizing a through-type design of the experimental device.
  • the experimental bridge 17 When the experimental bridge 17 is placed in the experimental space 33 of the through-type bridge durability wheel load experimental device, its length will not be limited by the experimental device.
  • the support mechanism can be shell type, frame type or column type 3, as long as it can realize that the experimental space 33 has two opposite open ends; no matter what shape the experimental space 33 is, as long as there are two opposite open ends. .
  • the support mechanism can adopt the column type 3, including more than four columns 3, cross beams 4 and longitudinal beams 5; the columns 3 are arranged vertically and distributed at the four corners of the rectangular plane, and the cross beams 4 and longitudinal beams 5 are arranged horizontally.
  • the two upright columns 3 are connected to the tops of the upright columns 3; the four upright columns 3 are used as edges to form a quadrangular prism space structure, and the space within the quadrangular prism space structure is the experimental space 33.
  • the upright column 3 can be a square column, that is, its cross section is square.
  • the experimental space 33 formed by the column type 3 is an open space and naturally has two open ends set opposite each other.
  • the installation mechanism 2 is used to install the flywheel 11, the driving mechanism, the second track 1 and integrate the load-bearing mechanism; the installation mechanism 2 can adopt a frame structure, and its shape can match the experimental space 33. Specifically, if the experimental space 33 is in the shape of a rectangular parallelepiped or approximately a rectangular parallelepiped, the installation mechanism 2 can adopt a rectangular frame.
  • the installation mechanism 2 can use shaped steel welded to a rectangular frame, and several strips of shaped steel can be welded between the rectangular frames as mounting brackets to install the flywheel 11 and the second track 1 and so on.
  • the flywheel 11 is circular and rotates in a vertical plane.
  • the horizontal tangent line of the outer edge of the flywheel 11 is along the length direction of the experimental space 33.
  • One end of the driving mechanism is connected to the spokes of the flywheel 11; as the flywheel 11 rotates, it interacts with the flywheel 11. 11
  • One end of the connected driving mechanism rotates accordingly.
  • the driving mechanism rotates with the connection position as an axis to ensure that the relative positions of the two ends of the driving mechanism do not change, that is, the other end of the driving mechanism is always at the bottom.
  • the other end of the driving mechanism moves horizontally back and forth along the length direction of the experimental space 33, thereby driving the loading mechanism to move horizontally back and forth.
  • the spokes of the flywheel 11 may have two or more first connection positions, each first connection position is at a different distance from the center of the flywheel 11, and one end of the driving mechanism is connected to one of the first connection positions.
  • the flywheel 11 and the driving mechanism can be connected through a connecting shaft. Specifically, it can be connected through a crank pin; for example, multiple crank pin holes are provided on the spokes of the flywheel 11, and the distance between each crank pin hole and the center of the flywheel 11 is unequal; one end of the driving mechanism is hinged with the crank pin, and the crank pin is connected to the flywheel. 11 crank pin hole connection.
  • the driving mechanism can use a driving mechanism that can change rotation in a vertical plane into horizontal linear motion.
  • the driving mechanism includes a lower link 26, a swing arm 6 and an upper link 9.
  • the upper link 9 and the lower link 26 are arranged approximately horizontally, and the swing arm 6 is arranged vertically; One end is dynamically connected to the flywheel 11, and the other end is dynamically connected to the upper part of the swing arm 6; one end of the lower link 26 is dynamically connected to the bottom end of the swing arm 6, and the other end is connected to the loading mechanism, and the swing arm 6 is connected to the upper link 9 and between lower link 26.
  • the upper link 9 makes a circular motion driven by the flywheel 11, and then drives the swing arm 6 to swing horizontally and left and right.
  • the horizontally swinging swing arm 6 drives the loading mechanism to move horizontally back and forth along the length direction of the experimental space 33.
  • the swing arm 6 can adopt a bending mechanism, that is, a curved arm.
  • the curved arm is bent toward the upper link 9.
  • the bending position is the arm bend.
  • the arm bend is located at the upper part of the swing arm 6.
  • the connection position between the upper link 9 and the swing arm 6 is located at the bend. At, that is, the upper connecting rod 9 is connected to the arm of the swing arm 6.
  • the lower link 26, the swing arm 6 and the upper link 9 can be connected through a connecting shaft, so that the lower link 26, the swing arm 6 and the upper link 9 rotate about the connecting shaft; specifically, the swing arm 6
  • a seat hole is provided at the upper part and the arm bend.
  • the seat hole is hinged with the left end of the upper connecting rod 9.
  • the right end of the upper connecting rod 9 is hinged with the crank pin.
  • the crank pin is connected with the crank pin hole of the flywheel 11.
  • the seat hole at the lower end of the swing arm 6 is connected with the crank pin hole of the flywheel 11.
  • the left end of the lower connecting rod 26 is hinged, and the right end of the lower connecting rod 26 is hinged with the loading cart 20 through a connecting rod pin.
  • a four-bar mechanism including flywheel 11, upper link 9, swing arm 6, and lower link 26 is used between the flywheel 11 and the loading mechanism, which expands the reciprocating motion range of the loading vehicle 20 and expands the testable range of the experimental bridge 17 scope.
  • the spokes of the flywheel 11 are provided with a plurality of crank pin holes, which can also realize the adjustment of the rolling range of the loading vehicle 20 .
  • a fixing mechanism can also be provided near the swing arm 6 to provide supporting force to the vertically arranged swing arm 6.
  • the fixing mechanism is provided on the mounting mechanism 2 and is rotationally connected to the top of the swing arm 6; there is a second connection position between the fixing mechanism and the swing arm 6, and the swing arm 6 swings along the length direction of the experimental space 33 with the second connection position as an axis.
  • the fixing mechanism can be a triangle bracket 8; the triangle bracket 8 is mainly composed of three support rods, a vertically arranged central support rod, side support rods located on both sides of the central support rod, and the tops of the three support rods are connected together to form a triangle.
  • a swing arm base 7 can be provided on the top of the tripod bracket 8, and the swing arm base 7 is dynamically connected to the top end of the swing arm 6. Specifically, it can be connected through a connecting shaft.
  • the top of the swing arm 6 is hingedly fixed on the triangular bracket 8 through the swing arm base 7, and the triangular bracket 8 is fastened to the mounting mechanism 2 through bolts.
  • the second rail 1 can be horizontally arranged at the bottom of the installation mechanism 2; the number of the second rail 1 can be any number, specifically it can be strips or strips.
  • the second track 1 can be made of steel, and the track shape of the second track 1 is adapted to the position where the loading mechanism moves along the second track 1 .
  • the loading wheel 31 When the loading wheel 31 is provided on the upper surface of the loading mechanism, the loading wheel 31 contacts the second rail 1 and moves along the second rail 1 .
  • the second rail 1 has a shape that enables the loading wheel 31 to roll horizontally.
  • the loading mechanism may also include a loading body, a loading wheel 31 and a pressure sensor; the loading wheel 31 is provided on the upper surface of the loading body, the rolling wheel 25 is provided on the lower surface of the loading body, and the pressure sensor is provided between the loading wheel 31 and the loading body. ;
  • the loading wheel 31 rolls along the second track 1.
  • the rolling wheel 25 contacts the experimental bridge 17 located below, rolls the experimental bridge 17, and moves along the experimental bridge 17.
  • the movement direction of the rolling wheel 25 along the bridge 17 is consistent with the length direction of the loading body.
  • the loading body also includes an air bag 28, which is disposed between the loading wheel 31 and the loading body. The function of the loading body is to install the loading wheel 31, the rolling wheel 25, the air bag 28 and the pressure sensor.
  • the loading wheel 31 is used as the wheel and the loading body
  • the entire vehicle structure is formed for the vehicle body.
  • the rolling wheel 25 is used as the wheel and the loading body is used as the vehicle body to form the entire vehicle structure; the entire loading mechanism forms a double-sided vehicle structure, that is, the loading vehicle 20 .
  • the driving mechanism is connected to the loading wheel 31 , for example, the other end of the lower connecting rod 26 is connected to the hub 24 of the loading wheel 31 .
  • Both the loading wheel 31 and the rolling wheel 25 can adopt the existing wheel structure; the loading main body can adopt the main structure of the existing car body, which can realize the installation of the loading wheel 31, the rolling wheel 25 and the air bag 28 and the loading wheel 31 and the rolling wheel.
  • the pressure wheel 25 can rotate after being installed.
  • the upper surface of the loading body has an installation position, and the installation position is a recessed structure; the installation position includes a first installation position and a second installation position. The first installation position is used to install the first loading wheel 31, and the second installation position is used to install the first loading wheel 31.
  • the air bag 28 can be an approximately flat rectangular parallelepiped structure, with its bottom surface fixed at the first installation position on the upper surface of the loading body, and its upper surface connected to the first loading wheel 31; the air bag 28 can be connected to the first loading wheel 31 through a connecting component. One end of the component is connected to the loading wheel 31, and the other end is connected to the top of the air bag 28.
  • the bottom surface of the airbag 28 can adopt a rigid structure, such as the bottom plate of the airbag 28; the bottom end of the airbag 28 is sealed and fixed at the first installation position through the bottom plate of the airbag 28.
  • the loading wheel 31 can be made of the existing wheel material of the experimental loading vehicle 20 .
  • the number of the first loading wheels 31 or the second loading wheels 31 is a multiple of 2, and they are symmetrically distributed on the front and rear sides of the upper surface.
  • the two first loading wheels 31 are respectively located on the front and rear sides of the first installation position and are symmetrically distributed;
  • the two second loading wheels 31 are respectively located on the front and rear sides of the second installation position and are symmetrically distributed; or,
  • the number of the first loading wheels 31 is 4, and the number of the second loading wheels 31 is 4; the two first loading wheels 31 are located on the front side of the first installation position, and the two first loading wheels 31 are located on the rear side of the first installation position.
  • two second loading wheels 31 are located on the front side of the second installation position, and two second loading wheels 31 are located on the rear side of the second installation position, symmetrically distributed;
  • four loading wheels 31 located on the same side are located on The same length direction, that is, the line connecting the end points of the first central axes of the four loading wheels 31 located on the same side, is along the length direction of the loading body.
  • the loading wheel 31 can be arranged on the loading body in the following manner: using an existing connection structure to connect the loading wheel 31 to the upper surface of the loading body.
  • the connecting rod 27 and the loading wheel 31 pin can be used as the connecting structure; the connecting rod 27 is connected between the first loading wheel 31 and the second loading wheel 31 located on the same side; the loading wheel 31 pin is connected to the loading wheel 31 on the same side. between the two first loading wheels 31 on both sides.
  • the connecting rod is connected between the hub 24 of the first loading wheel 31 and the hub 24 of the second loading wheel 31 , and the loading wheel 31 is pin-connected between the two hubs 24 of the first loading wheel 31 .
  • the loading wheel box seat 30 can also be used as the installation component of the loading wheel 31.
  • the loading wheel box seat 30 includes a first loading wheel box seat 30 and a second loading wheel box seat 30; the first loading wheel box seat 30 is arranged between the air bag 28 and the second loading wheel box seat 30. Between the first loading wheels 31, the second loading wheel box seat 30 is arranged between the upper surface and the second loading wheel 31; the first loading wheel box seat 30 is used to install the first loading wheel 31, and the second loading wheel box seat 30 is used to install the first loading wheel 31. 30 is used to install the second loading wheel 31.
  • the loading wheels 31 located at the same installation position and on the same side are installed on the same loading wheel box seat 30; the connecting rod 27 is connected to the third loading wheel box seat 30 on the same side.
  • the driving mechanism is connected to the hub 24 of the second loading wheel 31 , for example, the other end of the lower connecting rod 26 is connected to the second loading wheel box seat 30 .
  • a connecting rod 27 on each side of the loading mechanism is hinged with the box seat and the rolling wheel 25 pin of the loading wheel box seat 30 respectively. This simplifies the structure and reduces the dead weight, and ensures that the loading wheel 31 and the second track 1 are floating. Uniform contact operation.
  • the rolling wheel 25 can be made of the existing wheels of the experimental loading vehicle 20 .
  • the size of the rolling wheel 25 can be larger than the size of the loading wheel 31 .
  • the number of rolling wheels 25 is a multiple of 2, distributed left and right, with the rolling wheel 25 on the left close to the rolling wheel 25 on the right; for example, the number of rolling wheels 25 is 2, and the two rolling wheels 25 are located at the same length. direction, that is, the line connecting the end points of the second central axes of the two rolling wheels 25 is along the length direction of the loading body.
  • the number of rolling wheels 25 can also be a multiple of 4, evenly distributed on the left and right. The rolling wheel 25 on the left is close to the rolling wheel 25 on the right.
  • the rolling wheels 25 on the same side are coaxial, that is, the rolling wheels 25 on the same side are coaxial.
  • the second central axis of the rolling wheels 25 is located on the same straight line; for example, the number of rolling wheels 25 is 4, two on the left and two on the right.
  • the rolling wheels 25 located on the same side are coaxial, and the rolling wheels 25 located on the left are coaxial.
  • the line connecting the end point of the second central axis and the end point of the second central axis of the rolling wheel 25 on the right is along the length direction of the loading body.
  • the rolling wheel 25 can be arranged on the loading body in the following manner: using an existing connection structure to connect the rolling wheel 25 to the lower surface of the loading body.
  • the suspension and the rolling wheel 25 axle can be used as the connecting structure; the left and right ends of the suspension are connected between the two rolling wheels 25 located on the left and right sides in the same length direction, and the upper end of the suspension is connected to the bottom. surface; the rolling wheel 25 is axially connected between the coaxial rolling wheels 25 located on the same side.
  • the suspension is connected to the hub 24 of the rolling wheel 25, and the rolling wheel 25 axis is connected to the hub 24 of the rolling wheel 25.
  • the suspension can be connected to the lower surface through a suspension shaft 22.
  • suspension shaft 22 One end of the suspension shaft 22 is connected to the suspension, and the other end is dynamically connected to the lower surface of the loading body.
  • the other end of the suspension shaft 22 is dynamically connected to the lower surface of the loading body, which means that the suspension shaft 22 can rotate in the vertical plane with the connection position as the axis, and the horizontal tangent of the rotation trajectory of the suspension shaft 22 is along the length direction of the loading body; for example , the suspension shaft 22 is hingedly connected to the lower surface of the loading body; the connection position of the suspension shaft 22 and the suspension is the middle position of the suspension.
  • the suspension can adopt rigid suspension21.
  • the suspension and suspension shaft 22 are used as the connecting parts between the rolling wheel 25 and the loading body, and the suspension shaft 22 is dynamically connected to the loading body, so that the loading mechanism keeps the force of the rolling wheel 25 always in a balanced state. Even if the position where the loading mechanism receives the loading force is not the center but one end of the loading mechanism, the multiple rolling wheels 25 and the experimental bridge 17 can still be operated in floating uniform contact.
  • the pressure sensor is connected between the second loading wheel 31 and the upper surface.
  • the pressure sensor can be a pin-type sensor 32; specifically, the second loading wheel box seat 30 is hinged to the upper surface of the loading body through the pin-type sensor 32.
  • the airbag limiting member is provided between the first loading wheel 31 and the airbag 28 to limit the loading force of the first loading wheel 31 on the airbag 28 .
  • the second power mechanism provides power to the flywheel 11 .
  • the second power mechanism may include a main motor 10 and a reducer 12; both the main motor 10 and the reducer 12 may be disposed on the upper surface of the mounting mechanism 2; the main motor 10 is connected to the reducer 12, and the reducer 12 is connected to the flywheel 11. connect.
  • the reducer 12 can be arranged coaxially with the flywheel 11 .
  • the connection between the main motor 10 and the reducer 12 refers to electrical connection.
  • the connection control relationship between the main motor 10, the reducer 12 and the flywheel 11 is common knowledge in the field.
  • other power mechanisms that can drive the flywheel 11 to rotate can also be used as the second power mechanism.
  • the installation mechanism 2 can be designed as a structure that can move up and down; at this time, the through-type bridge durability wheel load experimental device also includes a third A power mechanism and a first track; the support mechanism includes an inner side, and the inner side faces the experimental space 33; the first rail is vertically arranged on the inner side, and the movement direction of the first rail is up and down; the first power mechanism is connected to the installation mechanism 2, Power is provided to the mounting mechanism 2 to move the mounting mechanism 2 up and down along the first track.
  • the first power mechanism includes a lifting servo motor 14 and a lifting reducer 15 ; the lifting servo motor 14 and the lifting reducer 15 are provided on the mounting mechanism 2 , for example, on the upper surface of the mounting mechanism 2 .
  • the lifting servo motor 14 is connected to the lifting reducer 15, and the lifting reducer 15 drives the installation mechanism 2.
  • the first power mechanism also includes an elevator 13; the elevator 13 includes a fixed end and a moving end; the fixed end is fixedly connected to the top of the support mechanism, one side of the moving end is connected to the installation mechanism 2, and the other side is connected to the first track. Sliding connection; the mobile end drives the installation mechanism 2 to slide up and down along the first track.
  • the fixed end and the moving end can be connected through a connecting piece, which can be a connecting rope, a chain, etc.; the fixed end is fixedly connected to the top of the support mechanism, one side of the moving end is connected to the installation mechanism 2, and the other side is connected to the third One track is slidingly connected; the moving end drives the installation mechanism 2 to slide up and down along the first track.
  • the side of the mounting mechanism 2 can be connected with a slider, through which the slider slides up and down along the first track.
  • the number of first tracks can be any number, specifically it can be more than two, for example four. If a column 3 type support mechanism is used, the first track is arranged on the inner side of the column 3 .
  • the four first rails are respectively provided on the four upright columns 3, and one first rail is provided on each upright column 3.
  • the first track can be made of steel U-shaped track.
  • the through-type bridge durability wheel load experimental device also includes a control system, which is used to control the first power mechanism and the second power mechanism according to the pressure sensor.
  • the control system includes a control panel 16.
  • the control panel 16 can be disposed on the support mechanism, for example, on the outer side of the support mechanism.
  • the outer side refers to the side facing away from the experimental space 33.
  • the control panel 16 is disposed on the surface of one of the columns 3 .
  • the method of using the through-type bridge durability wheel load experimental device provided by the present invention is as follows: place the bridge 17 in the experimental space 33, so that the length direction of the bridge 17 passes along the length direction of the experimental space 33, and both ends of the length direction of the bridge 17 pass through respectively Experimental space 33 is open at both ends.
  • the loading mechanism is connected to the flywheel 11 of the experimental device through the driving mechanism, the loading wheel 31 is in contact with the horizontal track of the experimental device, and the rolling wheel 25 is in contact with the experimental bridge 17 placed horizontally in the experimental device.
  • the experimental device drives the flywheel 11 and the driving mechanism to move downward through other mechanisms, exerts a loading force on the loading mechanism, monitors the magnitude of the loading force through the pressure sensor of the loading mechanism, and limits the loading force of the experimental device on the loading mechanism through the air bag limiter.
  • the flywheel 11 rotates to drive the driving mechanism to reciprocate horizontally.
  • the loading mechanism is driven by the driving mechanism to reciprocate horizontally.
  • the loading wheel 31 moves horizontally along the horizontal track.
  • the rolling wheel 25 carrying the loading force rolls the experimental bridge 17 back and forth.
  • the loading force of the loading vehicle 20 on the bridge 17 is adjusted by adjusting the lifting servo motor 14.
  • the loading force is measured by the pin sensor 32 and displayed on the control panel 16; the rolling force of the loading vehicle 20 is adjusted by adjusting the rotation speed of the main motor 10. Speed; after setting the experimental parameters such as loading force and loading speed, start and stop the experiment through the control panel 16.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Engineering & Computer Science (AREA)
  • Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
  • Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)

Abstract

A through-type bridge durability wheel load experimental device, which belongs to the technical field of test apparatuses. The experimental device comprises a support mechanism, a mounting mechanism (2), a flywheel (11), a second power mechanism, a driving mechanism, a second track (1) and a loading mechanism, wherein the loading mechanism comprises rollers (25); the support mechanism is provided with an experiment space (33), which has two open ends opposite each other; the mounting mechanism is provided in the experiment space; the second track (1) is provided at the bottom of the mounting mechanism (2); the loading mechanism is provided below the second track (1); one end of the driving mechanism is connected to the flywheel (11), and the other end of the driving mechanism is connected to the loading mechanism; and the rollers (25) are provided at the bottom of the loading mechanism and are driven by the loading mechanism to roll a bridge back and forth. According to the device, the flywheel (11), the driving mechanism, etc. are arranged at an upper portion, so that the through-type experimental device is achieved, a relatively long solid bridge can be placed, and durability wheel load experiments can be carried out on solid bridges of different lengths and pavement materials and structures.

Description

贯通式桥梁耐久性轮荷实验装置Through-type bridge durability wheel load experimental device 技术领域Technical field
本发明涉及一种贯通式桥梁耐久性轮荷实验装置，属于试验设备技术领域。The invention relates to a through-type bridge durability wheel load experimental device, belonging to the technical field of test equipment.
背景技术Background technique
桥梁耐久性轮荷实验装置是试验、检测不同长度的实体桥梁和路面材料与结构耐久性轮荷实验的专用设备。目前现有技术尚未存在桥梁耐久性实验设备，仅有极少的桥梁疲劳试验设备。但是，现有桥梁疲劳试验设备存在以下问题：对于实验用桥梁的长度有限制，只能对长度较短的桥梁进行疲劳试验，不能对较长的实体桥梁和路面材料与结构进行耐久性轮荷实验；另外，现有桥梁疲劳试验设备是用一个大飞轮带动一个长连杆来驱动加载车往复运动，进行桥梁疲劳试验实效性差、效率低，难以满足工程技术研究的需要，且飞轮直径较大，连杆长度较长，设备自身占地面积大。The bridge durability wheel load test device is a special equipment for testing and detecting the wheel load test of the durability of solid bridges and pavement materials and structures of different lengths. At present, there is no bridge durability test equipment in the existing technology, and there are only very few bridge fatigue test equipment. However, existing bridge fatigue testing equipment has the following problems: there are limitations on the length of experimental bridges, fatigue testing can only be performed on shorter bridges, and durability wheel loading cannot be performed on longer solid bridges and pavement materials and structures. Experiment; in addition, the existing bridge fatigue test equipment uses a large flywheel to drive a long connecting rod to drive the loading vehicle to reciprocate. The bridge fatigue test is ineffective and inefficient, and it is difficult to meet the needs of engineering and technical research, and the diameter of the flywheel is large. , the length of the connecting rod is longer, and the equipment itself occupies a large area.
发明内容Contents of the invention
本发明的目的是为了克服上述现有技术的不足，提供一种贯通式桥梁耐久性轮荷实验装置，旨在解决现有桥梁耐久性实验设备不能实现较大长度的实体桥梁和路面材料与结构耐久性轮荷实验的问题。The purpose of the present invention is to overcome the above-mentioned shortcomings of the prior art and provide a through-type bridge durability wheel load test device, aiming to solve the problem that existing bridge durability test equipment cannot implement larger lengths of physical bridges and pavement materials and structures. Durability wheel load test issues.
为实现上述目的，本发明采用下述技术方案：In order to achieve the above objects, the present invention adopts the following technical solutions:
贯通式桥梁耐久性轮荷实验装置，包括：支撑机构、安装机构、飞轮、第二动力机构、驱动机构、加载机构和第二轨道；所述支撑机构具有实验空间，所述实验空间具有长度方向，所述实验空间位于长度方向的两端开放；所述安装机构设置于实验空间内、与支撑机构连接；所述飞轮竖直设置于安装机构上方、与安装机构连接，飞轮所在的竖直平面与实验空间的长度方向平行；所述第二动力机构与飞轮连接，为飞轮提供动力；所述第二轨道设置于安装机构底面，所述第二轨道的运动方向与实验空间的长度方向一致；所述加载机构设置于第二轨道下方、沿第二轨道往返运动；所述加载机构包括碾压轮，所述碾压轮沿实验空间的长度方向对实验桥梁碾压；所述驱动机构的一端与飞轮动连接、另一端与加载机构动连接。The through-type bridge durability wheel load experimental device includes: a support mechanism, an installation mechanism, a flywheel, a second power mechanism, a driving mechanism, a loading mechanism and a second track; the support mechanism has an experimental space, and the experimental space has a length direction , the experimental space is open at both ends in the length direction; the installation mechanism is arranged in the experimental space and connected to the support mechanism; the flywheel is arranged vertically above the installation mechanism and connected to the installation mechanism, and the vertical plane where the flywheel is located Parallel to the length direction of the experimental space; the second power mechanism is connected to the flywheel to provide power for the flywheel; the second rail is provided on the bottom surface of the installation mechanism, and the movement direction of the second rail is consistent with the length direction of the experimental space; The loading mechanism is arranged below the second track and moves back and forth along the second track; the loading mechanism includes a rolling wheel, which rolls the experimental bridge along the length direction of the experimental space; one end of the driving mechanism It is dynamically connected to the flywheel, and the other end is dynamically connected to the loading mechanism.
附图说明Description of the drawings
图1是本发明实施例提供的贯通式桥梁耐久性轮荷实验装置主视示意图；Figure 1 is a schematic front view of the through-type bridge durability wheel load experimental device provided by the embodiment of the present invention;
图2是本发明实施例提供的贯通式桥梁耐久性轮荷实验装置左视示意图；Figure 2 is a schematic left view of the through-type bridge durability wheel load experimental device provided by the embodiment of the present invention;
图3是本发明实施例提供的贯通式桥梁耐久性轮荷实验装置俯视示意图；Figure 3 is a schematic top view of the through-type bridge durability wheel load experimental device provided by the embodiment of the present invention;
图4是本发明实施例提供的贯通式桥梁耐久性轮荷实验装置的支撑机构示意图；Figure 4 is a schematic diagram of the support mechanism of the through-type bridge durability wheel load experimental device provided by the embodiment of the present invention;
图5是本发明实施例提供的贯通式桥梁耐久性轮荷实验装置的安装机构及所承载的其他机构的示意图；Figure 5 is a schematic diagram of the installation mechanism and other supported mechanisms of the through-type bridge durability wheel load experimental device provided by the embodiment of the present invention;
其中，1、第二轨道，2、安装机构，3、立柱，4、横梁，5、纵梁，6、摆臂，7、摆臂座，8、三角支架，9、上连杆，10、主电机，11、飞轮，12、减速机，13、升降机，14、升降伺服电机，15、升降减速器，16、控制面板，17、桥梁，20、加载车，21、刚性悬架，22、悬架轴，24、轮毂，25、碾压轮，26、下连杆，27、连接杆，28、气囊，29、气囊箱座、30、加载轮箱座，31、加载轮，32、轴销式传感器，33、实验空间。Among them, 1. Second track, 2. Installation mechanism, 3. Column, 4. Cross beam, 5. Longitudinal beam, 6. Swing arm, 7. Swing arm base, 8. Triangle bracket, 9. Upper link, 10. Main motor, 11. Flywheel, 12. Reducer, 13. Lift, 14. Lift servo motor, 15. Lift reducer, 16. Control panel, 17. Bridge, 20. Loading vehicle, 21. Rigid suspension, 22. Suspension shaft, 24. Wheel hub, 25. Rolling wheel, 26. Lower connecting rod, 27. Connecting rod, 28. Air bag, 29. Air bag box seat, 30. Loading wheel box seat, 31. Loading wheel, 32. Axle Pin sensor, 33, experimental space.
具体实施方式Detailed ways
下面结合附图和实施例对本发明进一步说明。The present invention will be further described below in conjunction with the accompanying drawings and examples.
本说明书附图所绘示的结构、比例、大小等，均仅用以配合说明书所揭示的内容，以供熟悉此技术的人士了解与阅读，并非用以限定本发明可实施的限定条件，故不具技术上的实质意义，任何结构的修饰、比例关系的改变或大小的调整，在不影响本发明所能产生的功效及所能达成的目的下，均应仍落在本发明所揭示的技术内容涵盖的范围内。同时，本说明书中所引用的如“上”、“下”、“左”、“右”、“中间”及“一”等的用语，亦仅为便于叙述的明了，而非用以限定本发明可实施的范围，其相对关系的改变或调整，在无实质变更技术内容下，当亦视为本发明可实施的范畴。The structures, proportions, sizes, etc. shown in the drawings of this specification are only used to coordinate with the content disclosed in the specification and are for the understanding and reading of those familiar with this technology. They are not used to limit the conditions under which the present invention can be implemented. Therefore, It has no technical substantive significance. Any structural modifications, changes in proportions or adjustments in size shall still fall within the scope of the technology disclosed in the present invention as long as it does not affect the effectiveness and purpose of the present invention. within the scope of the content covered. At the same time, terms such as "upper", "lower", "left", "right", "middle" and "one" cited in this specification are only for convenience of description and are not used to limit the scope of this specification. The scope of the invention that can be implemented, and changes or adjustments in their relative relationships, as long as there is no substantial change in the technical content, shall also be regarded as the scope of the invention that can be implemented.
如图1-5所示贯通式桥梁耐久性轮荷实验装置，包括：支撑机构、安装机构2、飞轮11、第二轨道1、加载机构、驱动机构和第二动力机构；支撑机构具有实验空间33，实验空间33具有长度方向，实验空间33位于长度方向的两端开放；安装机构2设置于实验空间33内与支撑机构连接；飞轮11竖直设置于安装机构2上方、与安装机构2连接，飞轮11所在的竖直平面与实验空间33的长度方向平行；第二轨道1设置于安装机构2底面，第二轨道1的运动方向与实验空间33的长度方向一致；加载机 构设置于第二轨道1下方、沿第二轨道1往返运动；加载机构包括碾压轮25，碾压轮25沿实验空间33的长度方向滚动；驱动机构的一端与飞轮11动连接、另一端与加载机构动连接；第二动力机构与飞轮11连接，为飞轮11提供动力。第二轨道1的运动方向是指加载机构沿第二轨道1运动的运动方向，通常是指第二轨道1的长度方向。As shown in Figure 1-5, the through-type bridge durability wheel load experimental device includes: support mechanism, installation mechanism 2, flywheel 11, second track 1, loading mechanism, driving mechanism and second power mechanism; the support mechanism has an experimental space 33. The experimental space 33 has a length direction, and the two ends of the experimental space 33 are open in the length direction; the installation mechanism 2 is arranged in the experimental space 33 and connected to the support mechanism; the flywheel 11 is arranged vertically above the installation mechanism 2 and connected to the installation mechanism 2 , the vertical plane where the flywheel 11 is located is parallel to the length direction of the experimental space 33; the second track 1 is set on the bottom surface of the installation mechanism 2, and the movement direction of the second track 1 is consistent with the length direction of the experimental space 33; the loading mechanism is set on the second It moves back and forth below the track 1 and along the second track 1; the loading mechanism includes a rolling wheel 25, which rolls along the length direction of the experimental space 33; one end of the driving mechanism is dynamically connected to the flywheel 11, and the other end is dynamically connected to the loading mechanism. ; The second power mechanism is connected with the flywheel 11 to provide power for the flywheel 11. The movement direction of the second rail 1 refers to the movement direction of the loading mechanism along the second rail 1 , and usually refers to the length direction of the second rail 1 .
其中，飞轮11、驱动机构、第二轨道1、加载机构集成于安装机构2，安装机构2位于实验空间33的上部，实验用的各机构均设置于实验空间33上方，没有设置在实验空间33周围；因此，实验空间33在水平方向的空间大小不会受到各机构的限制。另外，实验空间33位于长度方向的两端是开放的，使得实验空间33在长度方向是不受限制的，从而实现了实验装置的贯通式设计。实验桥梁17放置在贯通式桥梁耐久性轮荷实验装置的实验空间33内时，其长度不会受到实验装置的限制。Among them, the flywheel 11, the driving mechanism, the second track 1, and the loading mechanism are integrated into the installation mechanism 2. The installation mechanism 2 is located at the upper part of the experimental space 33. All the mechanisms used for the experiment are arranged above the experimental space 33 and are not arranged in the experimental space 33. surrounding; therefore, the spatial size of the experimental space 33 in the horizontal direction will not be limited by each institution. In addition, both ends of the experimental space 33 in the length direction are open, so that the experimental space 33 is not restricted in the length direction, thereby realizing a through-type design of the experimental device. When the experimental bridge 17 is placed in the experimental space 33 of the through-type bridge durability wheel load experimental device, its length will not be limited by the experimental device.
支撑机构可以采用壳体式、框架式或立柱3式，只要能实现实验空间33存在相对的开放两端即可；不论实验空间33是什么样的形状，只要存在相对设置的开放的两端即可。具体的，支撑机构可以采用立柱3式，包括四根以上立柱3、横梁4和纵梁5；立柱3竖直设置、分布于矩形平面的四个顶角，横梁4和纵梁5水平设置于两立柱3之间、与立柱3的顶部连接；以四根立柱3为棱构成四棱柱空间结构，该四棱柱空间结构内的空间为实验空间33。立柱3可以采用方形柱，即其横截面为方形。采用立柱3式所形成的实验空间33，是一个开放空间，自然具备相对设置的开放的两端。The support mechanism can be shell type, frame type or column type 3, as long as it can realize that the experimental space 33 has two opposite open ends; no matter what shape the experimental space 33 is, as long as there are two opposite open ends. . Specifically, the support mechanism can adopt the column type 3, including more than four columns 3, cross beams 4 and longitudinal beams 5; the columns 3 are arranged vertically and distributed at the four corners of the rectangular plane, and the cross beams 4 and longitudinal beams 5 are arranged horizontally. The two upright columns 3 are connected to the tops of the upright columns 3; the four upright columns 3 are used as edges to form a quadrangular prism space structure, and the space within the quadrangular prism space structure is the experimental space 33. The upright column 3 can be a square column, that is, its cross section is square. The experimental space 33 formed by the column type 3 is an open space and naturally has two open ends set opposite each other.
安装机构2，用于安装飞轮11、驱动机构、第二轨道1并集成承载机构；安装机构2可以采用框架式结构，其形状与实验空间33匹配即可。具体的，若实验空间33为长方体或近似长方体形状，安装机构2可以采用长方形框架即可。例如，安装机构2可以采用型钢焊接成长方形框架，在长方形框架之间焊接几条型钢作为安装支架以安装飞轮11和第二轨道1等。The installation mechanism 2 is used to install the flywheel 11, the driving mechanism, the second track 1 and integrate the load-bearing mechanism; the installation mechanism 2 can adopt a frame structure, and its shape can match the experimental space 33. Specifically, if the experimental space 33 is in the shape of a rectangular parallelepiped or approximately a rectangular parallelepiped, the installation mechanism 2 can adopt a rectangular frame. For example, the installation mechanism 2 can use shaped steel welded to a rectangular frame, and several strips of shaped steel can be welded between the rectangular frames as mounting brackets to install the flywheel 11 and the second track 1 and so on.
飞轮11为圆形，飞轮11在竖直平面内转动，飞轮11外沿的水平切线沿实验空间33的长度方向，驱动机构的一端连接于飞轮11的轮辐；随着飞轮11的转动，与飞轮11连接的驱动机构的一端随之转动。驱动机构的一端与飞轮11动之间具有连接位置，驱动机构以连接位置为轴转动，以保证驱动机构的两端的相对位置不会变化，即驱动机构的另一端始终处于底部。在飞轮11的带动下，驱动机构的另一端则沿实验空间33的长度方向水平往返运动，进而带动加载机构水平往返运动。The flywheel 11 is circular and rotates in a vertical plane. The horizontal tangent line of the outer edge of the flywheel 11 is along the length direction of the experimental space 33. One end of the driving mechanism is connected to the spokes of the flywheel 11; as the flywheel 11 rotates, it interacts with the flywheel 11. 11 One end of the connected driving mechanism rotates accordingly. There is a connection position between one end of the driving mechanism and the flywheel 11. The driving mechanism rotates with the connection position as an axis to ensure that the relative positions of the two ends of the driving mechanism do not change, that is, the other end of the driving mechanism is always at the bottom. Driven by the flywheel 11, the other end of the driving mechanism moves horizontally back and forth along the length direction of the experimental space 33, thereby driving the loading mechanism to move horizontally back and forth.
飞轮11轮辐上可以具有两个以上第一连接位置，每个第一连接位置远与飞轮11中心之间的距离不同，驱动机构的一端与其中一个第一连接位置连接。通过选择不同 的第一连接位置，可以调整驱动机构与飞轮11之间的连接位置，进而可以调整驱动机构另一端的水平往往运动距离。飞轮11和驱动机构之间可以通过连接轴连接。具体的，可以通过曲柄销连接；例如，在飞轮11轮辐上开设多个曲柄销孔，各曲柄销孔与飞轮11中心之间距离不相等；驱动机构的一端与曲柄销铰接，曲柄销与飞轮11的曲柄销孔连接。The spokes of the flywheel 11 may have two or more first connection positions, each first connection position is at a different distance from the center of the flywheel 11, and one end of the driving mechanism is connected to one of the first connection positions. By selecting different first connection positions, the connection position between the driving mechanism and the flywheel 11 can be adjusted, and then the horizontal movement distance of the other end of the driving mechanism can be adjusted. The flywheel 11 and the driving mechanism can be connected through a connecting shaft. Specifically, it can be connected through a crank pin; for example, multiple crank pin holes are provided on the spokes of the flywheel 11, and the distance between each crank pin hole and the center of the flywheel 11 is unequal; one end of the driving mechanism is hinged with the crank pin, and the crank pin is connected to the flywheel. 11 crank pin hole connection.
驱动机构可以采用能将竖直平面内转动改变为水平直线运动的驱动机构。具体的，可以采用以下结构：驱动机构包括下连杆26、摆臂6和上连杆9，上连杆9和下连杆26近似横向设置、摆臂6竖向设置；上连杆9的一端与飞轮11动连接、另一端与摆臂6的上部动连接；下连杆26的一端与摆臂6的底端动连接、另一端与加载机构连接，摆臂6连接在上连杆9和下连杆26之间。上连杆9在飞轮11的带动下做圆周运动，进而带动摆臂6水平摆动、左右摆动，水平摆动的摆臂6带动加载机构沿实验空间33的长度方向水平往返运动。摆臂6可以采用弯曲机构，即弯臂，弯臂朝向上连杆9弯曲，弯曲位置位为臂弯，臂弯位于摆臂6的上部，上连杆9与摆臂6的连接位置位于弯曲处，即上连杆9与摆臂6的臂弯连接。The driving mechanism can use a driving mechanism that can change rotation in a vertical plane into horizontal linear motion. Specifically, the following structure can be adopted: the driving mechanism includes a lower link 26, a swing arm 6 and an upper link 9. The upper link 9 and the lower link 26 are arranged approximately horizontally, and the swing arm 6 is arranged vertically; One end is dynamically connected to the flywheel 11, and the other end is dynamically connected to the upper part of the swing arm 6; one end of the lower link 26 is dynamically connected to the bottom end of the swing arm 6, and the other end is connected to the loading mechanism, and the swing arm 6 is connected to the upper link 9 and between lower link 26. The upper link 9 makes a circular motion driven by the flywheel 11, and then drives the swing arm 6 to swing horizontally and left and right. The horizontally swinging swing arm 6 drives the loading mechanism to move horizontally back and forth along the length direction of the experimental space 33. The swing arm 6 can adopt a bending mechanism, that is, a curved arm. The curved arm is bent toward the upper link 9. The bending position is the arm bend. The arm bend is located at the upper part of the swing arm 6. The connection position between the upper link 9 and the swing arm 6 is located at the bend. At, that is, the upper connecting rod 9 is connected to the arm of the swing arm 6.
下连杆26、摆臂6和上连杆9之间可以通过连接轴连接，以使下连杆26、摆臂6和上连杆9以连接轴为轴转动；具体的，摆臂6的上部、臂弯处设置座孔，座孔与上连杆9的左端铰接，上连杆9的右端与曲柄销铰接，曲柄销与飞轮11的曲柄销孔连接；摆臂6下端的座孔与下连杆26的左端铰接，下连杆26的右端通过连杆销与加载车20铰接。飞轮11和加载机构之间采用包括飞轮11、上连杆9、摆臂6、下连杆26在内的四杆机构，扩大了加载车20的往返运动范围扩大了实验用桥梁17的可实验范围。而且，飞轮11的轮辐上设有多个曲柄销孔，还可以实现加载车20碾压范围的调整。The lower link 26, the swing arm 6 and the upper link 9 can be connected through a connecting shaft, so that the lower link 26, the swing arm 6 and the upper link 9 rotate about the connecting shaft; specifically, the swing arm 6 A seat hole is provided at the upper part and the arm bend. The seat hole is hinged with the left end of the upper connecting rod 9. The right end of the upper connecting rod 9 is hinged with the crank pin. The crank pin is connected with the crank pin hole of the flywheel 11. The seat hole at the lower end of the swing arm 6 is connected with the crank pin hole of the flywheel 11. The left end of the lower connecting rod 26 is hinged, and the right end of the lower connecting rod 26 is hinged with the loading cart 20 through a connecting rod pin. A four-bar mechanism including flywheel 11, upper link 9, swing arm 6, and lower link 26 is used between the flywheel 11 and the loading mechanism, which expands the reciprocating motion range of the loading vehicle 20 and expands the testable range of the experimental bridge 17 scope. Moreover, the spokes of the flywheel 11 are provided with a plurality of crank pin holes, which can also realize the adjustment of the rolling range of the loading vehicle 20 .
为了提高摆臂6的稳定性，还可以在摆臂6附近设置固定机构，给竖向设置的摆臂6以支撑力。固定机构设置于安装机构2、与摆臂6的顶端转动连接；固定机构与摆臂6之间具有第二连接位置，摆臂6以第二连接位置为轴沿实验空间33的长度方向摆动。具体的，固定机构可以是三角支架8；三角支架8主要由三根支撑杆组成，竖直设置的中心支撑杆，位于中心支撑杆两侧的侧支撑杆，三根支撑杆的顶部连接在一起为三角支架8的顶部，三根支撑杆的底部均与安装机构2连接。三角支架8顶部可以设置摆臂座7，摆臂座7与摆臂6的顶端动连接，具体的，可以通过连接轴连接。例如，摆臂6顶部通过摆臂座7铰接固定在三角支架8上，三角支架8通过螺栓紧固于安装机构2。In order to improve the stability of the swing arm 6, a fixing mechanism can also be provided near the swing arm 6 to provide supporting force to the vertically arranged swing arm 6. The fixing mechanism is provided on the mounting mechanism 2 and is rotationally connected to the top of the swing arm 6; there is a second connection position between the fixing mechanism and the swing arm 6, and the swing arm 6 swings along the length direction of the experimental space 33 with the second connection position as an axis. Specifically, the fixing mechanism can be a triangle bracket 8; the triangle bracket 8 is mainly composed of three support rods, a vertically arranged central support rod, side support rods located on both sides of the central support rod, and the tops of the three support rods are connected together to form a triangle. The top of the bracket 8 and the bottoms of the three support rods are connected to the installation mechanism 2 . A swing arm base 7 can be provided on the top of the tripod bracket 8, and the swing arm base 7 is dynamically connected to the top end of the swing arm 6. Specifically, it can be connected through a connecting shaft. For example, the top of the swing arm 6 is hingedly fixed on the triangular bracket 8 through the swing arm base 7, and the triangular bracket 8 is fastened to the mounting mechanism 2 through bolts.
第二轨道1可以水平设置于安装机构2底部；第二轨道1的数量可以是任意数量，具体的可以是条或条。第二轨道1可以采用钢制轨道，第二轨道1的轨道形状与加载机构沿第二轨道1运动的部位相适应。当加载机构的上表面设置加载轮31时，加载轮31与第二轨道1接触、加载轮31沿第二轨道1运动，此时，第二轨道1为能使加载轮31水平滚动的形状。The second rail 1 can be horizontally arranged at the bottom of the installation mechanism 2; the number of the second rail 1 can be any number, specifically it can be strips or strips. The second track 1 can be made of steel, and the track shape of the second track 1 is adapted to the position where the loading mechanism moves along the second track 1 . When the loading wheel 31 is provided on the upper surface of the loading mechanism, the loading wheel 31 contacts the second rail 1 and moves along the second rail 1 . At this time, the second rail 1 has a shape that enables the loading wheel 31 to roll horizontally.
加载机构还可以包括加载主体、加载轮31和压力传感器；加载轮31设置于加载主体的上表面，碾压轮25设置于加载主体的下表面，压力传感器设置于加载轮31和加载主体之间；加载轮31沿第二轨道1滚动。使用过程中，碾压轮25与位于其下方的实验桥梁17接触、对实验桥梁17碾压、沿实验桥梁17运动，碾压轮25沿桥梁17的运动方向与加载主体的长度方向一致。为了减震缓冲，加载主体还包括气囊28，气囊28设置于加载轮31和加载主体之间。加载主体的作用在于安装加载轮31、碾压轮25、气囊28和压力传感器，可以设计为任意形状，具体的，可以设计为车体形状；此时，以加载轮31为车轮、以加载主体为车体形成整车结构，同时，以碾压轮25为车轮、以加载主体为车体形成整车结构；整个加载机构形成双面车结构，即加载车20。此时，驱动机构与加载轮31连接，例如，下连杆26的另一端与加载轮31的轮毂24连接。The loading mechanism may also include a loading body, a loading wheel 31 and a pressure sensor; the loading wheel 31 is provided on the upper surface of the loading body, the rolling wheel 25 is provided on the lower surface of the loading body, and the pressure sensor is provided between the loading wheel 31 and the loading body. ; The loading wheel 31 rolls along the second track 1. During use, the rolling wheel 25 contacts the experimental bridge 17 located below, rolls the experimental bridge 17, and moves along the experimental bridge 17. The movement direction of the rolling wheel 25 along the bridge 17 is consistent with the length direction of the loading body. For shock absorption and buffering, the loading body also includes an air bag 28, which is disposed between the loading wheel 31 and the loading body. The function of the loading body is to install the loading wheel 31, the rolling wheel 25, the air bag 28 and the pressure sensor. It can be designed in any shape, specifically, it can be designed in the shape of a car body; at this time, the loading wheel 31 is used as the wheel and the loading body The entire vehicle structure is formed for the vehicle body. At the same time, the rolling wheel 25 is used as the wheel and the loading body is used as the vehicle body to form the entire vehicle structure; the entire loading mechanism forms a double-sided vehicle structure, that is, the loading vehicle 20 . At this time, the driving mechanism is connected to the loading wheel 31 , for example, the other end of the lower connecting rod 26 is connected to the hub 24 of the loading wheel 31 .
加载轮31和碾压轮25均可以采用现有车轮结构；加载主体可以采用现有的车体的主要结构，能实现加载轮31、碾压轮25、气囊28的安装及加载轮31和碾压轮25安装后能转动即可。通常情况下，加载主体的上表面具有安装位置，安装位置为凹陷结构；安装位置包括第一安装位置和第二安装位置，第一安装位置用于安装第一加载轮31，第二安装位置用于安装第二加载轮31；为了保证气囊28的安装，加载主体采用不对称结构，第一安装位置的凹陷程度要大于第二位置的凹陷程度，可以的是，第一安装位置安装气囊28之后其上表面与第二安装位置的上表面持平。气囊28可以是近似扁平的长方体结构，其底面固定于加载主体的上表面的第一安装位置，其上面与第一加载轮31连接；气囊28可以通过连接部件与第一加载轮31连接，连接部件的一端与加载轮31连接、另一端与气囊28上面连接。气囊28的底面可以采用刚性结构，例如气囊28底板；气囊28底端通过气囊28底板密封并固定于第一安装位置。Both the loading wheel 31 and the rolling wheel 25 can adopt the existing wheel structure; the loading main body can adopt the main structure of the existing car body, which can realize the installation of the loading wheel 31, the rolling wheel 25 and the air bag 28 and the loading wheel 31 and the rolling wheel. The pressure wheel 25 can rotate after being installed. Normally, the upper surface of the loading body has an installation position, and the installation position is a recessed structure; the installation position includes a first installation position and a second installation position. The first installation position is used to install the first loading wheel 31, and the second installation position is used to install the first loading wheel 31. For installing the second loading wheel 31; in order to ensure the installation of the airbag 28, the loading body adopts an asymmetric structure, and the degree of depression at the first installation position is greater than the degree of depression at the second position. It is possible that after the airbag 28 is installed at the first installation position Its upper surface is flush with the upper surface of the second installation position. The air bag 28 can be an approximately flat rectangular parallelepiped structure, with its bottom surface fixed at the first installation position on the upper surface of the loading body, and its upper surface connected to the first loading wheel 31; the air bag 28 can be connected to the first loading wheel 31 through a connecting component. One end of the component is connected to the loading wheel 31, and the other end is connected to the top of the air bag 28. The bottom surface of the airbag 28 can adopt a rigid structure, such as the bottom plate of the airbag 28; the bottom end of the airbag 28 is sealed and fixed at the first installation position through the bottom plate of the airbag 28.
加载轮31可以采用现有的实验加载车20的车轮的材质即可。第一加载轮31或第二加载轮31的数量为2的倍数，对称地分布于上表面的前侧与后侧。例如，两个第一加载轮31分别位于第一安装位置的前侧和后侧，对称分布；两个第二加载轮31分别 位于第二安装位置的前侧和后侧，对称分布；或者，第一加载轮31的数量为4，第二加载轮31的数量为4；两个第一加载轮31位于第一安装位置的前侧、两个第一加载轮31位于第一安装位置的后侧，对称分布；两个第二加载轮31位于第二安装位置的前侧、两个第二加载轮31位于第二安装位置的后侧，对称分布；位于同侧的四个加载轮31位于同一长度方向，即位于同侧的四个加载轮31的第一中心轴的端点的连线沿加载主体的长度方向。The loading wheel 31 can be made of the existing wheel material of the experimental loading vehicle 20 . The number of the first loading wheels 31 or the second loading wheels 31 is a multiple of 2, and they are symmetrically distributed on the front and rear sides of the upper surface. For example, the two first loading wheels 31 are respectively located on the front and rear sides of the first installation position and are symmetrically distributed; the two second loading wheels 31 are respectively located on the front and rear sides of the second installation position and are symmetrically distributed; or, The number of the first loading wheels 31 is 4, and the number of the second loading wheels 31 is 4; the two first loading wheels 31 are located on the front side of the first installation position, and the two first loading wheels 31 are located on the rear side of the first installation position. side, symmetrically distributed; two second loading wheels 31 are located on the front side of the second installation position, and two second loading wheels 31 are located on the rear side of the second installation position, symmetrically distributed; four loading wheels 31 located on the same side are located on The same length direction, that is, the line connecting the end points of the first central axes of the four loading wheels 31 located on the same side, is along the length direction of the loading body.
加载轮31设置于加载主体可以采用以下方式实现：采用现有的连接结构将加载轮31连接于加载主体的上表面。具体的，可以采用括连接杆27和加载轮31销轴作为连接结构；连接杆27连接于位于同侧的第一加载轮31和第二加载轮31之间；加载轮31销轴连接于位于两侧的两个第一加载轮31之间。例如，连接杆连接于第一加载轮31轮毂24和第二加载轮31轮毂24之间，加载轮31销轴连接于两个第一加载轮31轮毂24之间。还可以采用加载轮箱座30作为加载轮31的安装部件，加载轮箱座30包括第一加载轮箱座30和第二加载轮箱座30；第一加载轮箱座30设置于气囊28和第一加载轮31之间，第二加载轮箱座30设置于上表面与第二加载轮31之间；第一加载轮箱座30用于安装第一加载轮31，第二加载轮箱座30用于安装第二加载轮31。在采用第一加载轮箱座30、第二加载轮箱座30的时候，位于同一安装位置、同侧的加载轮31安装于同一加载轮箱座30；连接杆27连接于位于同侧的第一加载轮箱座30和第二加载轮箱座30之间。此时，驱动机构连接于第二加载轮31轮毂24，例如，下连杆26的另一端与第二加载轮箱座30连接。加载机构两侧各一根连接杆27分别与箱座、加载轮箱座30的碾压轮25销轴铰接，这既简化了结构又减轻了自重，确保了加载轮31与第二轨道1浮动均力接触运行。The loading wheel 31 can be arranged on the loading body in the following manner: using an existing connection structure to connect the loading wheel 31 to the upper surface of the loading body. Specifically, the connecting rod 27 and the loading wheel 31 pin can be used as the connecting structure; the connecting rod 27 is connected between the first loading wheel 31 and the second loading wheel 31 located on the same side; the loading wheel 31 pin is connected to the loading wheel 31 on the same side. between the two first loading wheels 31 on both sides. For example, the connecting rod is connected between the hub 24 of the first loading wheel 31 and the hub 24 of the second loading wheel 31 , and the loading wheel 31 is pin-connected between the two hubs 24 of the first loading wheel 31 . The loading wheel box seat 30 can also be used as the installation component of the loading wheel 31. The loading wheel box seat 30 includes a first loading wheel box seat 30 and a second loading wheel box seat 30; the first loading wheel box seat 30 is arranged between the air bag 28 and the second loading wheel box seat 30. Between the first loading wheels 31, the second loading wheel box seat 30 is arranged between the upper surface and the second loading wheel 31; the first loading wheel box seat 30 is used to install the first loading wheel 31, and the second loading wheel box seat 30 is used to install the first loading wheel 31. 30 is used to install the second loading wheel 31. When using the first loading wheel box seat 30 and the second loading wheel box seat 30, the loading wheels 31 located at the same installation position and on the same side are installed on the same loading wheel box seat 30; the connecting rod 27 is connected to the third loading wheel box seat 30 on the same side. Between the first loading wheel box seat 30 and the second loading wheel box seat 30 . At this time, the driving mechanism is connected to the hub 24 of the second loading wheel 31 , for example, the other end of the lower connecting rod 26 is connected to the second loading wheel box seat 30 . A connecting rod 27 on each side of the loading mechanism is hinged with the box seat and the rolling wheel 25 pin of the loading wheel box seat 30 respectively. This simplifies the structure and reduces the dead weight, and ensures that the loading wheel 31 and the second track 1 are floating. Uniform contact operation.
碾压轮25可以采用现有的实验加载车20的车轮的材质即可。碾压轮25的尺寸可以大于加载轮31的尺寸。碾压轮25的数量为2的倍数，左右分布，位于左边的碾压轮25靠近位于右边的碾压轮25；例如，碾压轮25的数量为2，两个碾压轮25位于同一长度方向，即两个碾压轮25的第二中心轴的端点的连线沿加载主体的长度方向。碾压轮25的数量还可以是4的倍数，左右平均分布，位于左边的碾压轮25靠近位于右边的碾压轮25，位于同一边的碾压轮25同轴，即位于同一边的碾压轮25的第二中心轴位于同一直线；例如，碾压轮25的数量为4，左边两个、右边两个，位于同一边的碾压轮25同轴，位于左边的碾压轮25的第二中心轴的端点与位于右边的碾压轮25的第二中心轴的端点的连线沿加载主体的长度方向。The rolling wheel 25 can be made of the existing wheels of the experimental loading vehicle 20 . The size of the rolling wheel 25 can be larger than the size of the loading wheel 31 . The number of rolling wheels 25 is a multiple of 2, distributed left and right, with the rolling wheel 25 on the left close to the rolling wheel 25 on the right; for example, the number of rolling wheels 25 is 2, and the two rolling wheels 25 are located at the same length. direction, that is, the line connecting the end points of the second central axes of the two rolling wheels 25 is along the length direction of the loading body. The number of rolling wheels 25 can also be a multiple of 4, evenly distributed on the left and right. The rolling wheel 25 on the left is close to the rolling wheel 25 on the right. The rolling wheels 25 on the same side are coaxial, that is, the rolling wheels 25 on the same side are coaxial. The second central axis of the rolling wheels 25 is located on the same straight line; for example, the number of rolling wheels 25 is 4, two on the left and two on the right. The rolling wheels 25 located on the same side are coaxial, and the rolling wheels 25 located on the left are coaxial. The line connecting the end point of the second central axis and the end point of the second central axis of the rolling wheel 25 on the right is along the length direction of the loading body.
碾压轮25设置于加载主体可以采用以下方式实现：采用现有的连接结构将碾压轮25连接于加载主体的下表面。具体的，可以采用悬架和碾压轮25轴作为连接结构；悬架的左右两端连接位于左右两边的、位于同一长度方向的两个碾压轮25之间，悬架的上端连接于下表面；碾压轮25轴连接位于同一边的、同轴的碾压轮25之间。具体的，悬架连接碾压轮25轮毂24，碾压轮25轴连接碾压轮25轮毂24。悬架的可以通过悬架轴22连接于下表面，悬架轴22的一端连接悬架、另一端动连接于加载主体下表面。悬架轴22的另一端与加载主体下表面动连接是指悬架轴22能以连接位置为轴在竖直平面内转动，悬架轴22转动轨迹的水平切线沿加载主体的长度方向；例如，悬架轴22的与加载主体的下表面铰接；悬架轴22与悬架的连接位置为悬架的中间位置。悬架可以采用刚性悬架21。采用悬架和悬架轴22作为碾压轮25和加载主体的连接件并采用悬架轴22与加载主体动连接的连接方式，使得加载机构使得碾压轮25的受力始终处于平衡状态。即使，加载机构接受加载力的位置不是中心位置而是加载机构的一端，仍然能实现多个碾压轮25与实验桥梁17浮动均力接触运行。The rolling wheel 25 can be arranged on the loading body in the following manner: using an existing connection structure to connect the rolling wheel 25 to the lower surface of the loading body. Specifically, the suspension and the rolling wheel 25 axle can be used as the connecting structure; the left and right ends of the suspension are connected between the two rolling wheels 25 located on the left and right sides in the same length direction, and the upper end of the suspension is connected to the bottom. surface; the rolling wheel 25 is axially connected between the coaxial rolling wheels 25 located on the same side. Specifically, the suspension is connected to the hub 24 of the rolling wheel 25, and the rolling wheel 25 axis is connected to the hub 24 of the rolling wheel 25. The suspension can be connected to the lower surface through a suspension shaft 22. One end of the suspension shaft 22 is connected to the suspension, and the other end is dynamically connected to the lower surface of the loading body. The other end of the suspension shaft 22 is dynamically connected to the lower surface of the loading body, which means that the suspension shaft 22 can rotate in the vertical plane with the connection position as the axis, and the horizontal tangent of the rotation trajectory of the suspension shaft 22 is along the length direction of the loading body; for example , the suspension shaft 22 is hingedly connected to the lower surface of the loading body; the connection position of the suspension shaft 22 and the suspension is the middle position of the suspension. The suspension can adopt rigid suspension21. The suspension and suspension shaft 22 are used as the connecting parts between the rolling wheel 25 and the loading body, and the suspension shaft 22 is dynamically connected to the loading body, so that the loading mechanism keeps the force of the rolling wheel 25 always in a balanced state. Even if the position where the loading mechanism receives the loading force is not the center but one end of the loading mechanism, the multiple rolling wheels 25 and the experimental bridge 17 can still be operated in floating uniform contact.
压力传感器连接于第二加载轮31与上表面之间。压力传感器可以采用轴销式传感器32；具体的，第二加载轮箱座30通过轴销式传感器32铰接在加载主体上表面。The pressure sensor is connected between the second loading wheel 31 and the upper surface. The pressure sensor can be a pin-type sensor 32; specifically, the second loading wheel box seat 30 is hinged to the upper surface of the loading body through the pin-type sensor 32.
气囊限位件设置于第一加载轮31和气囊28之间，以限制第一加载轮31对气囊28的加载力。The airbag limiting member is provided between the first loading wheel 31 and the airbag 28 to limit the loading force of the first loading wheel 31 on the airbag 28 .
第二动力机构为飞轮11提供动力。具体的，第二动力机构可以包括主电机10和减速机12；主电机10和减速机12均可以设置于安装机构2的上表面；主电机10与减速机12连接，减速机12与飞轮11连接。减速机12可以与飞轮11同轴设置。主电机10与减速机12连接是指电连接。主电机10、减速机12和飞轮11之间的连接控制关系均为本领域公知常识。除了主电机10和减速机12，还可以采用其他能驱动飞轮11转动的动力机构作为第二动力机构。The second power mechanism provides power to the flywheel 11 . Specifically, the second power mechanism may include a main motor 10 and a reducer 12; both the main motor 10 and the reducer 12 may be disposed on the upper surface of the mounting mechanism 2; the main motor 10 is connected to the reducer 12, and the reducer 12 is connected to the flywheel 11. connect. The reducer 12 can be arranged coaxially with the flywheel 11 . The connection between the main motor 10 and the reducer 12 refers to electrical connection. The connection control relationship between the main motor 10, the reducer 12 and the flywheel 11 is common knowledge in the field. In addition to the main motor 10 and the reducer 12, other power mechanisms that can drive the flywheel 11 to rotate can also be used as the second power mechanism.
为了方便实现通过安装机构2上的第二轨道1对碾压轮25施加加载力，可以将安装机构2设计为可以上下移动的结构；此时，贯通式桥梁耐久性轮荷实验装置还包括第一动力机构和第一轨道；支撑机构包括内侧面，内侧面朝向实验空间33；第一轨道竖向设置于内侧面，第一轨道的运动方向为上下；第一动力机构与安装机构2连接、为安装机构2提供动力、使安装机构2沿第一轨道上下运动。具体的，第一动力机构包括升降伺服电机14和升降减速器15；升降伺服电机14、升降减速器15设置于安装机构2，例如，安装于安装机构2的上表面。升降伺服电机14连接升降减速器15，升 降减速器15驱动安装机构2。具体的，第一动力机构还包括升降机13；升降机13包括固定端和移动端；所述固定端固定连接于支撑机构的顶部，移动端的一侧与安装机构2连接、另一侧与第一轨道滑动连接；移动端带动安装机构2沿第一轨道上下滑动。固定端和移动端可以通过连接件连接，连接件可以是连接绳、链条等；所述固定端固定连接于支撑机构的顶端，所述移动端的一侧与安装机构2连接、另一侧与第一轨道滑动连接；移动端带动安装机构2沿第一轨道上下滑动。安装机构2的侧面可以连接滑块，通过滑块沿第一轨道上下滑动。第一轨道的数量可以是任意数量，具体的可以是两条以上，例如四条。若采用立柱3式支撑机构，第一轨道设置于立柱3的内侧面。四条第一轨道分别设置于四根立柱3，一个立柱3设置一条第一轨道。第一轨道可以采用钢制U型轨道。In order to facilitate the application of loading force to the rolling wheel 25 through the second track 1 on the installation mechanism 2, the installation mechanism 2 can be designed as a structure that can move up and down; at this time, the through-type bridge durability wheel load experimental device also includes a third A power mechanism and a first track; the support mechanism includes an inner side, and the inner side faces the experimental space 33; the first rail is vertically arranged on the inner side, and the movement direction of the first rail is up and down; the first power mechanism is connected to the installation mechanism 2, Power is provided to the mounting mechanism 2 to move the mounting mechanism 2 up and down along the first track. Specifically, the first power mechanism includes a lifting servo motor 14 and a lifting reducer 15 ; the lifting servo motor 14 and the lifting reducer 15 are provided on the mounting mechanism 2 , for example, on the upper surface of the mounting mechanism 2 . The lifting servo motor 14 is connected to the lifting reducer 15, and the lifting reducer 15 drives the installation mechanism 2. Specifically, the first power mechanism also includes an elevator 13; the elevator 13 includes a fixed end and a moving end; the fixed end is fixedly connected to the top of the support mechanism, one side of the moving end is connected to the installation mechanism 2, and the other side is connected to the first track. Sliding connection; the mobile end drives the installation mechanism 2 to slide up and down along the first track. The fixed end and the moving end can be connected through a connecting piece, which can be a connecting rope, a chain, etc.; the fixed end is fixedly connected to the top of the support mechanism, one side of the moving end is connected to the installation mechanism 2, and the other side is connected to the third One track is slidingly connected; the moving end drives the installation mechanism 2 to slide up and down along the first track. The side of the mounting mechanism 2 can be connected with a slider, through which the slider slides up and down along the first track. The number of first tracks can be any number, specifically it can be more than two, for example four. If a column 3 type support mechanism is used, the first track is arranged on the inner side of the column 3 . The four first rails are respectively provided on the four upright columns 3, and one first rail is provided on each upright column 3. The first track can be made of steel U-shaped track.
贯通式桥梁耐久性轮荷实验装置还包括控制***，控制***用于根据压力传感器控制第一动力机构、第二动力机构。控制***包括控制面板16，为了方便操作，控制面板16可以设置于支撑机构，例如设置于支撑机构的外侧面，外侧面是指背向实验空间33的侧面。当支撑空间采用立柱3式结构时，控制面板16设置于其中一立柱3的表面。The through-type bridge durability wheel load experimental device also includes a control system, which is used to control the first power mechanism and the second power mechanism according to the pressure sensor. The control system includes a control panel 16. To facilitate operation, the control panel 16 can be disposed on the support mechanism, for example, on the outer side of the support mechanism. The outer side refers to the side facing away from the experimental space 33. When the support space adopts a column 3 structure, the control panel 16 is disposed on the surface of one of the columns 3 .
本发明提供的贯通式桥梁耐久性轮荷实验装置使用方法：将桥梁17放置在实验空间33内，使桥梁17的长度方向沿实验空间33的长度方向、桥梁17长度方向的两端分别穿过实验空间33开放的两端。加载机构通过驱动机构与实验装置的飞轮11连接，加载轮31与实验装置的水平轨道接触，碾压轮25与水平放置在实验装置内的实验桥梁17接触。实验装置通过其他机构带动飞轮11和驱动机构向下运动，对加载机构施加加载力，通过加载机构的压力传感器监测加载力的大小，通过气囊限位件限制实验装置对加载机构的加载力。飞轮11转动从而带动驱动机构水平往返运动，加载机构在驱动机构的驱动下水平往返运动、加载轮31沿水平轨道水平往返运动、载有加载力的碾压轮25对实验桥梁17往返碾压。通过调节升降伺服电机14调整加载车20对桥梁17的加载力，加载力的大小通过轴销式传感器32测量并在控制面板16上显示；通过调节主电机10的转速调整加载车20的碾压速度；设定好加载力、加载速度等实验参数后，通过控制面板16启停实验。The method of using the through-type bridge durability wheel load experimental device provided by the present invention is as follows: place the bridge 17 in the experimental space 33, so that the length direction of the bridge 17 passes along the length direction of the experimental space 33, and both ends of the length direction of the bridge 17 pass through respectively Experimental space 33 is open at both ends. The loading mechanism is connected to the flywheel 11 of the experimental device through the driving mechanism, the loading wheel 31 is in contact with the horizontal track of the experimental device, and the rolling wheel 25 is in contact with the experimental bridge 17 placed horizontally in the experimental device. The experimental device drives the flywheel 11 and the driving mechanism to move downward through other mechanisms, exerts a loading force on the loading mechanism, monitors the magnitude of the loading force through the pressure sensor of the loading mechanism, and limits the loading force of the experimental device on the loading mechanism through the air bag limiter. The flywheel 11 rotates to drive the driving mechanism to reciprocate horizontally. The loading mechanism is driven by the driving mechanism to reciprocate horizontally. The loading wheel 31 moves horizontally along the horizontal track. The rolling wheel 25 carrying the loading force rolls the experimental bridge 17 back and forth. The loading force of the loading vehicle 20 on the bridge 17 is adjusted by adjusting the lifting servo motor 14. The loading force is measured by the pin sensor 32 and displayed on the control panel 16; the rolling force of the loading vehicle 20 is adjusted by adjusting the rotation speed of the main motor 10. Speed; after setting the experimental parameters such as loading force and loading speed, start and stop the experiment through the control panel 16.
上述虽然结合附图对本发明的具体实施方式进行了描述，但并非对本发明保护范围的限制，所属领域技术人员应该明白，在本发明的技术方案的基础上，本领域技术人员不需要付出创造性劳动即可作出的各种修改或变形仍在本发明的保护范围以内。Although the specific embodiments of the present invention have been described above in conjunction with the accompanying drawings, they do not limit the scope of the present invention. Those skilled in the art should understand that based on the technical solutions of the present invention, those skilled in the art do not need to perform creative work. Various modifications or variations that can be made are still within the protection scope of the present invention.

Claims (10)

  1. 贯通式桥梁耐久性轮荷实验装置，其特征在于，包括：The through-type bridge durability wheel load experimental device is characterized by including:
    支撑机构，所述支撑机构具有实验空间，所述实验空间具有长度方向，所述实验空间位于长度方向的两端开放；A support mechanism, the support mechanism has an experimental space, the experimental space has a length direction, and the experimental space is open at both ends in the length direction;
    安装机构，所述安装机构设置于实验空间内、与支撑机构连接；An installation mechanism, which is arranged in the experimental space and connected to the support mechanism;
    飞轮，所述飞轮竖直设置于安装机构上方、与安装机构连接，飞轮所在的竖直平面与实验空间的长度方向平行；A flywheel, which is arranged vertically above the installation mechanism and connected to the installation mechanism, and the vertical plane where the flywheel is located is parallel to the length direction of the experimental space;
    第二轨道，所述第二轨道设置于安装机构底面，所述第二轨道的运动方向与实验空间的长度方向一致；a second track, the second track is arranged on the bottom surface of the installation mechanism, and the movement direction of the second track is consistent with the length direction of the experimental space;
    加载机构，所述加载机构设置于第二轨道下方、沿第二轨道往返运动；所述加载机构包括碾压轮，所述碾压轮沿实验空间的长度方向对实验桥梁碾压；A loading mechanism, which is arranged below the second track and moves back and forth along the second track; the loading mechanism includes a rolling wheel, which rolls the experimental bridge along the length direction of the experimental space;
    驱动机构，所述驱动机构的一端与飞轮动连接、另一端与加载机构动连接；以及，Driving mechanism, one end of the driving mechanism is dynamically connected to the flywheel, and the other end is dynamically connected to the loading mechanism; and,
    第二动力机构，所述第二动力机构与飞轮连接，为飞轮提供动力。The second power mechanism is connected with the flywheel to provide power for the flywheel.
  2. 根据权利要求1所述贯通式桥梁耐久性轮荷实验装置，其特征在于，所述第二动力机构设置于安装机构上方、与安装机构连接。The through-type bridge durability wheel load test device according to claim 1, characterized in that the second power mechanism is disposed above the installation mechanism and connected to the installation mechanism.
  3. 根据权利要求1所述贯通式桥梁耐久性轮荷实验装置，其特征在于，所述第二动力机构包括主电机和减速机，所述主电机与减速机连接，所述减速机与飞轮连接。The through-type bridge durability wheel load experimental device according to claim 1, characterized in that the second power mechanism includes a main motor and a reducer, the main motor is connected to the reducer, and the reducer is connected to a flywheel.
  4. 根据权利要求1所述贯通式桥梁耐久性轮荷实验装置，其特征在于，还包括第一动力机构和第一轨道；所述支撑机构包括内侧面，所述内侧面朝向实验空间；所述第一轨道设置于内侧面，所述第一轨道的运动方向为上下；所述第一动力机构与安装机构连接、为安装机构提供动力、使安装机构沿第一轨道上下运动。The through-type bridge durability wheel load experimental device according to claim 1, further comprising a first power mechanism and a first track; the support mechanism includes an inner side, and the inner side faces the experimental space; and the third A track is provided on the inner side, and the movement direction of the first track is up and down; the first power mechanism is connected with the installation mechanism, provides power for the installation mechanism, and causes the installation mechanism to move up and down along the first track.
  5. 根据权利要求4所述贯通式桥梁耐久性轮荷实验装置，其特征在于，所述第一动力机构包括：升降伺服电机和升降减速器；所述升降伺服电机、升降减速器设置于安装机构，所述升降伺服电机连接升降减速器，升降减速器驱动安装机构。The through-type bridge durability wheel load experimental device according to claim 4, characterized in that the first power mechanism includes: a lifting servo motor and a lifting reducer; the lifting servo motor and the lifting reducer are provided in the installation mechanism, The lifting servo motor is connected to a lifting reducer, and the lifting reducer drives the installation mechanism.
  6. 根据权利要求4所述贯通式桥梁耐久性轮荷实验装置，其特征在于，所述第一动力机构还包括升降机；所述升降机包括固定端和移动端；所述固定端固定连接于支撑机构的顶部，所述移动端的一侧与安装机构连接、另一侧与第一轨道滑动连接；移动端带动安装机构沿第一轨道上下滑动。The through-type bridge durability wheel load experimental device according to claim 4, wherein the first power mechanism further includes an elevator; the elevator includes a fixed end and a moving end; the fixed end is fixedly connected to the support mechanism. At the top, one side of the moving end is connected to the installation mechanism, and the other side is slidingly connected to the first track; the moving end drives the installation mechanism to slide up and down along the first track.
  7. 根据权利要求1所述贯通式桥梁耐久性轮荷实验装置，其特征在于，所述加载机构还包括加载主体、加载轮和压力传感器；所述加载轮设置于加载主体的上表面，所述碾压轮设置于加载主体的下表面，压力传感器设置于加载轮和加载主体之间；所 述加载轮沿第二轨道滚动。The through-type bridge durability wheel load experimental device according to claim 1, characterized in that the loading mechanism also includes a loading body, a loading wheel and a pressure sensor; the loading wheel is arranged on the upper surface of the loading body, and the roller The pressure wheel is arranged on the lower surface of the loading body, and the pressure sensor is arranged between the loading wheel and the loading body; the loading wheel rolls along the second track.
  8. 根据权利要求7所述贯通式桥梁耐久性轮荷实验装置，其特征在于，所述压力传感器为销轴式传感器。The through-type bridge durability wheel load experimental device according to claim 7, characterized in that the pressure sensor is a pin-type sensor.
  9. 根据权利要求1所述贯通式桥梁耐久性轮荷实验装置，其特征在于，所述驱动机构包括：下连杆、摆臂和上连杆，所述摆臂为弯臂；The through-type bridge durability wheel load experimental device according to claim 1, wherein the driving mechanism includes: a lower link, a swing arm and an upper link, and the swing arm is a curved arm;
    所述上连杆的一端与飞轮动连接，另一端与摆臂的臂弯处动连接；One end of the upper connecting rod is dynamically connected to the flywheel, and the other end is dynamically connected to the crook of the swing arm;
    所述下连杆的一端与摆臂的底端动连接、另一端与加载机构连接。One end of the lower link is dynamically connected to the bottom end of the swing arm, and the other end is connected to the loading mechanism.
  10. 根据权利要求9所述贯通式桥梁耐久性轮荷实验装置，其特征在于，还包括固定机构；所述固定机构设置于安装机构上表面、与摆臂的顶端转动连接；所述固定机构与摆臂之间具有连接位置，摆臂以连接位置为轴沿实验空间的长度方向摆动。The through-type bridge durability wheel load test device according to claim 9, further comprising a fixing mechanism; the fixing mechanism is disposed on the upper surface of the installation mechanism and is rotationally connected to the top of the swing arm; the fixing mechanism is connected to the swing arm. There is a connection position between the arms, and the swing arm swings along the length direction of the experimental space with the connection position as an axis.
PCT/CN2022/143577 2022-03-25 2022-12-29 Through-type bridge durability wheel load experimental device WO2023179164A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202210298962.4 2022-03-25
CN202210298962.4A CN114754951A (en) 2022-03-25 2022-03-25 Through type bridge durability wheel load experimental device

Publications (1)

Publication Number Publication Date
WO2023179164A1 true WO2023179164A1 (en) 2023-09-28

Family

ID=82326934

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2022/143577 WO2023179164A1 (en) 2022-03-25 2022-12-29 Through-type bridge durability wheel load experimental device

Country Status (2)

Country Link
CN (1) CN114754951A (en)
WO (1) WO2023179164A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114754950A (en) * 2022-03-25 2022-07-15 山东交通学院 Air bag type floating loading mechanism
CN114754949B (en) * 2022-03-25 2024-01-30 山东交通学院 Suspension driving type bridge durability wheel load experimental device
CN114754951A (en) * 2022-03-25 2022-07-15 山东交通学院 Through type bridge durability wheel load experimental device

Citations (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2357036Y (en) * 1998-12-28 2000-01-05 刘子荣 Tracing rut tester
JP2001289761A (en) * 2000-04-05 2001-10-19 Mitsubishi Heavy Ind Ltd Wheel load fatigue testing machine
JP2002174575A (en) * 2000-12-08 2002-06-21 Mitsubishi Heavy Ind Ltd Moving-load fatigue tester
CN201037804Y (en) * 2007-05-09 2008-03-19 比亚迪股份有限公司 Automobile bulb pin test bench
CN101240523A (en) * 2008-01-18 2008-08-13 山东交通学院 Road surface accelerating loading experimental device
CN201983990U (en) * 2011-03-29 2011-09-21 山东交通学院 Bridge running fatigue test loading device
CN102243157A (en) * 2011-03-29 2011-11-16 山东交通学院 Fatigue test loading device of transportation on bridge
CN102735513A (en) * 2012-07-19 2012-10-17 河北省交通规划设计院 Movable asphalt mixture forming machine
CN204389321U (en) * 2015-01-15 2015-06-10 中交公路长大桥建设国家工程研究中心有限公司 The wheeled rolling contact fatigue loading test platform of a kind of bridge deck structure
CN206208677U (en) * 2016-12-01 2017-05-31 辽宁省交通规划设计院有限责任公司 A kind of bridge and punishing road test system and its wheeled load loading dolly
CN108802351A (en) * 2018-09-04 2018-11-13 山东交通学院 A kind of lock block type list twin shaft conversion equipment for road-surface accelerating and loading test equipment
CN114754950A (en) * 2022-03-25 2022-07-15 山东交通学院 Air bag type floating loading mechanism
CN114754951A (en) * 2022-03-25 2022-07-15 山东交通学院 Through type bridge durability wheel load experimental device
CN114754949A (en) * 2022-03-25 2022-07-15 山东交通学院 Top suspension drive type bridge durability wheel load experimental device

Patent Citations (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2357036Y (en) * 1998-12-28 2000-01-05 刘子荣 Tracing rut tester
JP2001289761A (en) * 2000-04-05 2001-10-19 Mitsubishi Heavy Ind Ltd Wheel load fatigue testing machine
JP2002174575A (en) * 2000-12-08 2002-06-21 Mitsubishi Heavy Ind Ltd Moving-load fatigue tester
CN201037804Y (en) * 2007-05-09 2008-03-19 比亚迪股份有限公司 Automobile bulb pin test bench
CN101240523A (en) * 2008-01-18 2008-08-13 山东交通学院 Road surface accelerating loading experimental device
CN201983990U (en) * 2011-03-29 2011-09-21 山东交通学院 Bridge running fatigue test loading device
CN102243157A (en) * 2011-03-29 2011-11-16 山东交通学院 Fatigue test loading device of transportation on bridge
CN102735513A (en) * 2012-07-19 2012-10-17 河北省交通规划设计院 Movable asphalt mixture forming machine
CN204389321U (en) * 2015-01-15 2015-06-10 中交公路长大桥建设国家工程研究中心有限公司 The wheeled rolling contact fatigue loading test platform of a kind of bridge deck structure
CN206208677U (en) * 2016-12-01 2017-05-31 辽宁省交通规划设计院有限责任公司 A kind of bridge and punishing road test system and its wheeled load loading dolly
CN108802351A (en) * 2018-09-04 2018-11-13 山东交通学院 A kind of lock block type list twin shaft conversion equipment for road-surface accelerating and loading test equipment
CN114754950A (en) * 2022-03-25 2022-07-15 山东交通学院 Air bag type floating loading mechanism
CN114754951A (en) * 2022-03-25 2022-07-15 山东交通学院 Through type bridge durability wheel load experimental device
CN114754949A (en) * 2022-03-25 2022-07-15 山东交通学院 Top suspension drive type bridge durability wheel load experimental device

Also Published As

Publication number Publication date
CN114754951A (en) 2022-07-15

Similar Documents

Publication Publication Date Title
WO2023179164A1 (en) Through-type bridge durability wheel load experimental device
WO2023179163A1 (en) Upper suspension driving type bridge durability wheel load experiment device
CN202639740U (en) Adjustable rolling wheel frame
WO2023179166A1 (en) Air bag type floating loading mechanism
CN102717223B (en) Adjustable roller carrier
CN202284708U (en) Adjustable high-speed camera stand
CN208178779U (en) A kind of centering, panel turnover device
CN105059893B (en) Adjustable end stop
CN217348000U (en) Platform truck focus adjustment mechanism
JP3595780B2 (en) Lifter
WO2022252566A1 (en) Vertical movement mechanism and aerial work vehicle
CN111170199A (en) Air bag lifter for assembling passenger car
CN214372047U (en) Target vehicle
CN205348918U (en) Press from both sides wheel slewer and stereo garage
CN110646157B (en) Sliding window limiting impact test device
CN207111130U (en) A kind of segment overturning device
CN203410650U (en) Profile steel collecting device
CN105569410A (en) Clamping-wheel rotary device and stereo garage
CN208103786U (en) A kind of architectural engineering heavy lift anti-drop device
CN206844766U (en) A kind of mechanical parking equipment Automobile turntable
CN206634995U (en) Single group balances pressure type expansion bend
CN217838255U (en) Vehicle body lifting device for automobile coating production line
CN219010996U (en) Portable bridge detection device
CN116573537B (en) Safety protection device for assisting crane hoisting
CN218293314U (en) Vacuum chamber door mobile device

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 22933211

Country of ref document: EP

Kind code of ref document: A1