Air suspension loading device

Abstract

The application discloses an air suspension loading device and relates to the technical field of air suspensions, which comprises a bearing frame, a vertical loading assembly rotatably arranged on the top of the bearing frame, a power loading assembly arranged on any one side of the rotation axis of the vertical loading assembly, a piston rod arranged on the power loading assembly for axial extension and retraction, and two loading rods, each loading rod being symmetrically arranged on the two sides of the rotation axis of the vertical loading assembly and being rotatably connected with the vertical loading assembly, each loading rod being connected with a group of air suspensions, and each air suspension being fixed in the inner cavity of the bearing frame. The application solves the technical problem that the existing air suspension durability test loading device needs to be equipped with two sets of static pressure servo actuators to complete the suspension test, thereby reducing the suspension test cost and improving the detection efficiency.

Description

Technical Field

[0001] This invention relates to the field of air suspension technology, and in particular to an air suspension loading device. Background Technology

[0002] Current loading devices used for air suspension durability testing have several technical shortcomings when adapted to air suspension testing. Most existing loading devices employ a single hydrostatic servo actuator to drive a single air spring, while air suspension testing requires two hydrostatic servo actuators. This significantly increases equipment procurement and usage costs, reduces overall testing efficiency due to multiple devices, and further complicates the design of the fixtures, increasing operational difficulty. Furthermore, the common layout of existing loading devices with the hydrostatic servo actuator below and the testing fixture above results in a relatively high overall device height. Changing air spring samples during testing restricts operating space, makes disassembly and assembly cumbersome, and consumes considerable manpower and time. In addition, the fixed fixtures of traditional loading devices have poor adaptability, failing to meet the testing requirements of different suspension systems, and this lack of versatility limits their application in practical testing.

[0003] In summary, developing a loading device that is suitable for air suspension testing, has low testing costs, and is highly efficient is a problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0004] The purpose of this invention is to provide an air suspension loading device that solves the technical problem that existing air suspension durability test loading devices require two sets of hydrostatic servo actuators to complete the suspension test, resulting in high suspension test costs and low testing efficiency.

[0005] To achieve the above objectives, the present invention provides an air suspension loading device, comprising:

[0006] The load-bearing frame has a rotatable vertical loading component at its top;

[0007] The power loading assembly is located on either side of the rotation axis of the vertical loading assembly. The power loading assembly is equipped with a piston rod for axial extension and retraction, and the piston rod is rotatably connected to the vertical loading assembly.

[0008] Two loading rods are symmetrically arranged on both sides of the rotation axis of the vertical loading assembly, and the loading rods are rotatably connected to the vertical loading assembly. Each loading rod is connected to a set of air suspensions, and each air suspension is fixed to the inner cavity of the load-bearing frame.

[0009] Preferably, the power loading assembly includes a first hinge that is rotatably connected to the load-bearing frame. The other end of the first hinge is connected to a flange plate. A cylinder liner assembly is provided on the end face of the flange plate opposite to the first hinge. A piston rod is slidably provided inside the cylinder liner assembly. A servo valve is fixed to the cylinder liner assembly through a connecting plate. The servo valve supplies hydraulic oil to the cylinder liner assembly to drive the piston rod to move axially. A second hinge is connected to the end of the piston rod opposite to the load-bearing frame.

[0010] Preferably, the load-bearing frame includes a support base, on which four columns are vertically arranged. Two crossbeams are fixed to one end of each column away from the support base. The crossbeams are parallel to each other and connected vertically to each other by several longitudinal beams. A mounting frame is fixedly connected to the longitudinal beam at any end of the support base along the length direction. The mounting frame is specifically an L-shaped plate. The first hinge is connected to the mounting frame.

[0011] Preferably, the vertical loading assembly includes two parallel upright plates, each upright plate being an isosceles triangle. Several positioning guide posts are vertically connected between the upright plates, and each positioning guide post is used to lock the relative position of each upright plate. Each upright plate has a first connecting hole and a second connecting hole at its top and bottom corners, respectively. A second hinge is clamped between the upright plates and rotatably connected to the first connecting hole. Each loading rod has a third hinge at its end, which is clamped between the upright plates and rotatably connected to each second connecting hole.

[0012] Preferably, the vertical loading assembly is fixed to the bearing frame via bearing seats. A rotating shaft hole is provided between each of the second connecting holes. The bearing seats are symmetrically arranged on both sides of each vertical plate, and the insertion holes of each bearing seat correspond to each rotating shaft hole. A rolling bearing is fixed in the insertion hole. Each rolling bearing is fixedly connected to a connecting shaft via a bearing spacer, so that each vertical plate can rotate around the connecting shaft. A pressure cap is fixed in the opposite ports of each insertion hole, and the pressure cap has a function to restrict the axial degree of freedom of the rolling bearing.

[0013] Preferably, a connecting plate is fixed to one end of the loading rod, and a wheel spoke sensor for detecting the load is fixed to the connecting plate. The end face of the wheel spoke sensor facing away from the connecting plate is connected to a third hinge. The end of the loading rod facing away from the upright plate is connected to a loading flange through a spherical bearing. The loading flange is used to connect the air suspension.

[0014] Preferably, a reaction frame is fixed on the support base, and a tooling positioning plate is fixed to the side wall of the reaction frame by connecting bolts. The tooling positioning plate is provided with clamp positioning plates on both sides along the length direction of the bearing frame. A first clamp is provided on the end face of the tooling positioning plate away from the reaction frame, and a second clamp is provided on each clamp positioning plate. The first clamp and the second clamp work together to fix the air suspension.

[0015] Preferably, the support base has a snap-fit ​​groove extending along its width direction. The snap-fit ​​groove is specifically inverted T-shaped. The reaction frame and each column are fixed with mounting screws at their ends near the support base. Each mounting screw can mate with the snap-fit ​​groove.

[0016] Preferably, the cylinder liner assembly is connected to the oil supply assembly via an oil pipe, and an accumulator is fixed at the end of the connecting plate.

[0017] Preferably, the first hinge, the second hinge, and the third hinge all include a ball joint head, with a double-ended bolt and a hinge hole at each end of the ball joint head. The axis of the hinge hole is perpendicular to the axis of the double-ended bolt, and a pin passes through the hinge hole.

[0018] Compared to the aforementioned background technology, the air suspension loading device provided by the present invention includes: a load-bearing frame, a vertical loading component at the top of the load-bearing frame, the vertical loading component being rotatable inside the load-bearing frame, and the rotation axis of the vertical loading component being parallel to the width direction of the load-bearing frame; a power loading component is also provided on the load-bearing frame, the power loading component being located on either side of the rotation axis of the vertical loading component; the power loading component is provided with a piston rod capable of axial movement, the piston rod being rotatably connected to the vertical loading component; loading rods are rotatably connected to both sides of the rotation axis of the vertical loading component, the distance from the rotation axis of each loading rod to the rotation axis of the vertical loading component is equal, and a set of air suspension is connected to the end of each loading rod away from the vertical loading component; during the test of this application, the piston rod of the power loading component performs periodic extension and retraction movements, the piston rod drives the vertical loading component to swing back and forth, the loading rods on both sides of the vertical loading component move back and forth along the height direction of the load-bearing frame, and the feed directions of each loading rod within the same movement cycle are opposite; the loading rods periodically compress and rebound the air suspension below until the sample fails or meets the user requirements.

[0019] This application uses a swingable vertical loading component, which drives the loading rods on both sides to move through a set of power loading components, allowing two sets of samples to be tested simultaneously, reducing the cost of test equipment and significantly improving test efficiency. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0021] Figure 1 This is a first structural diagram of the air suspension loading device provided in an embodiment of the present invention;

[0022] Figure 2This is a structural diagram of the power loading component provided in an embodiment of the present invention;

[0023] Figure 3 This is a structural diagram of the vertical loading component provided in an embodiment of the present invention;

[0024] Figure 4 This is a structural diagram of the upright plate and positioning guide post assembly provided in an embodiment of the present invention;

[0025] Figure 5 This is a structural diagram of the hinge provided in an embodiment of the present invention;

[0026] Figure 6 This is a structural diagram of the bearing housing provided in an embodiment of the present invention;

[0027] Figure 7 This is a structural diagram of the reaction frame provided in an embodiment of the present invention;

[0028] Figure 8 This is a second structural diagram of the air suspension loading device provided in an embodiment of the present invention.

[0029] Among them, 1-load-bearing frame; 11-support base; 12-column; 13-crossbeam; 14-longitudinal beam; 15-mounting bracket; 16-slot; 2-power loading assembly; 21-first hinge; 22-flange plate; 23-cylinder liner assembly; 24-piston rod; 25-servo valve; 26-accumulator; 27-connecting plate; 28-oil pipe; 29-second hinge; 3-vertical loading assembly; 31-upright plate; 3 2-Positioning guide post; 33-Third hinge; 34-Wheele sensor; 35-Connecting disc; 36-Loading rod; 37-Loading flange; 4-Reaction frame; 41-Tooling positioning plate; 42-Clamping positioning plate; 43-First clamp; 44-Second clamp; 5-Bearing seat; 51-Connecting shaft; 52-Pressure cap; 53-Rolling bearing; 54-Bearing spacer; 61-Spherical hinge head; 62-Double-ended bolt; 63-Pin. Detailed Implementation

[0030] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0031] To enable those skilled in the art to better understand the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0032] This invention provides an air suspension loading device; please refer to the appendix to the specification. Figures 1 to 3 This application includes a load-bearing frame 1, with a vertical loading assembly 3 rotatably connected to the top of the load-bearing frame 1. The rotation axis of the vertical loading assembly 3 is parallel to the width direction of the load-bearing frame 1. A power loading assembly 2 is provided on either side of the rotation axis of the vertical loading assembly 3. The power loading assembly 2 has an axially movable piston rod 24 inside. The feed direction of the piston rod 24 is perpendicular to the rotation axis of the vertical loading assembly 3. The end of the piston rod 24 is rotatably connected to the power loading assembly 2. When the power loading assembly 2 is running, the piston rod 24 reciprocates along its axial direction, pushing the vertical loading assembly 3 to swing periodically. Loading rods 36 are symmetrically arranged on both sides of the rotation axis of the vertical loading assembly 3. Each loading rod 36 is perpendicular to each piston rod 24. Each loading rod 36 can rotate relative to the vertical loading assembly 3. A set of air suspensions is connected to the end of each loading rod 36 away from the vertical loading assembly 3. Each air suspension is fixed to the inner cavity of the load-bearing frame 1 to ensure the stability of the air suspension during the test.

[0033] In one embodiment of this application, the operator fixes the air suspension to be tested within the load-bearing frame 1 and fixes its own air spring to the loading rod 36. Then, the power loading assembly 2 is activated, and the piston rod 24 in the power loading assembly 2 performs reciprocating axial movement. The piston rod 24 applies a tangential force to the vertical loading assembly 3 to drive the vertical loading assembly 3 to oscillate periodically. Since the feed direction of the piston rod 24 is perpendicular to the feed direction of the loading rod 36, the horizontal movement of the piston rod 24 is converted into the vertical movement of each loading rod 36. Each loading rod 36 is symmetrically arranged on both sides of the rotation axis, and their feed directions are opposite. The loading rod 36 periodically presses the air spring, causing the air spring inside to periodically compress and rebound until the sample fails or meets the user's requirements.

[0034] See the instruction manual appendix Figure 2The power loading assembly 2 includes a cylinder liner assembly 23. A piston rod 24 is coaxially sleeved inside the cylinder liner assembly 23. The piston rod 24 can extend from one side port of the cylinder liner assembly 23 to the outside and slide along the axial direction of the cylinder liner assembly 23. A flange plate 22 is fixed on the side of the cylinder liner assembly 23 opposite to the extension port of the piston rod 24. The flange plate 22 is coaxially arranged with the cylinder liner assembly 23. A first hinge member 21 is fixed on the end face of the flange plate 22 opposite to the cylinder liner assembly 23. Correspondingly, a mounting bracket 15 is fixed on the top edge of the load-bearing frame 1. The mounting bracket 15 is specifically an L-shaped bent plate. Mounting bracket 15 includes a fixing part and a connecting part. The fixing part is used to connect with the bearing frame 1. The connecting part is used to fix the end face of the mounting bracket 15 away from the bending direction to the first hinge member 21. A triangular plate is provided between the connecting part and the fixing part to enhance the load strength of the mounting bracket 15. In this application, the first hinge member 21 is rotatably connected to the cylinder liner assembly 23, so that the torque generated by the cylinder liner assembly 23 during operation can be released, and the torque generated by the cylinder liner assembly 23 during the process of pushing the vertical loading component 3 is prevented from damaging the connection between the cylinder liner assembly 23 and the mounting bracket 15.

[0035] Furthermore, a connecting plate 27 is fixed on the side wall of the cylinder liner assembly 23. The connecting plate 27 is parallel to the axis of the cylinder liner assembly 23 and the two are locked together by screws. A servo valve 25 is provided on the end face of the connecting plate 27 away from the cylinder liner assembly 23. The servo valve 25 is connected to the oil supply assembly through the oil supply pipe 28. When the cylinder liner assembly 23 needs to run, the oil supply assembly is activated. The servo valve 25 is used to control the amount of hydraulic oil entering the cylinder liner assembly. Preferably, an accumulator 26 is also provided on any side edge of the connecting plate 27 in the length direction. The accumulator 26 is connected to the servo valve 25. The accumulator 26 is used to buffer the hydraulic shock generated when the servo valve 25 opens, closes and reverses, so as to avoid pressure fluctuations affecting the loading accuracy and protect the pipeline and seals, ensuring that the thrust and pushing distance applied by the piston rod 24 to the air suspension meet the preset values.

[0036] Please continue to refer to the instruction manual appendix. Figure 1The supporting frame 1 includes a support base 11, which is rectangular. Columns 12 are vertically connected to the four corners of the support base 11. Two parallel crossbeams 13 are provided between each column 12 along the length of the support base 11. Several longitudinal beams 14 are vertically connected between each crossbeam 13. The longitudinal beams 14 are fixed to each crossbeam 13, and each crossbeam 13 is fixed to each column 12 by welding. The outermost longitudinal beam 14 is used to fix a mounting frame 15. Screws are vertically inserted into the fixing part of the mounting frame 15 to fix the mounting frame 15 to the longitudinal beam 14. In one embodiment of this application, there are three longitudinal beams 14. The vertical loading component 3 is located on the middle longitudinal beam 14. Preferably, the distance between two adjacent longitudinal beams 14 is greater than the vertical radius of the vertical loading component 3. When the piston rod 24 pushes the vertical loading component 3 to rotate, there is sufficient space between each longitudinal beam 14 for the vertical loading component 3 to pass through, ensuring the stable swing of the vertical loading component 3.

[0037] Please refer to the instruction manual appendix. Figure 3 , 46. The vertical loading component 3 includes two parallel upright plates 31, each of which is specifically an isosceles triangle. Several positioning guide posts 32 are vertically inserted between the upright plates 31, evenly distributed on the end faces of each upright plate 31 to ensure stable relative positions between them. A first connecting hole and a second connecting hole are respectively provided at the top and bottom corners of each upright plate 31. A second hinge 29 is coaxially connected to the end of the piston rod 24. The second hinge 29 extends between the upright plates 31 and is rotatably connected to the first connecting hole. Furthermore, each second connecting hole contains... A third hinge 33 is rotatably connected, and a spoke sensor 34 is fixed to the end of the third hinge 33 away from the vertical loading assembly 3. The spoke sensor 34 includes an elastic spoke body and a resistance strain gauge attached to its end face. When an external force is applied to the center of the sensor, the spoke body undergoes a slight elastic deformation, causing the resistance value of the strain gauge to change. The resistance change is then converted into a voltage signal output through a Wheatstone bridge. During the test, the operator can use the spoke sensor 34 to detect the stress applied to the air suspension by the loading rod 36 in real time, ensuring that the test can be performed with preset data. Furthermore, a connecting plate 35 is provided on the end face of the spoke body away from the third hinge member 33. The connecting plate 35 is used to connect the loading rod 36. The connecting plate 35, the spoke sensor 34, and the loading rod 36 are all coaxially arranged. Preferably, the diameter circle of the spoke sensor 34 is larger than the diameter of the loading rod 36. If the loading rod 36 is directly connected to the spoke sensor 34, the loading rod 36 can only apply force to a small area of ​​the spoke sensor 34, which greatly reduces the detection accuracy of the spoke sensor 34. Moreover, because the force-bearing area is small, the pressure applied by the loading rod 36 to the spoke sensor 34 is large, which can easily damage the spoke sensor 34. After the connecting plate 35 is set, the loading rod 36 applies force to the spoke sensor 34 through the connecting plate 35. At this time, the force-bearing area of ​​the spoke sensor 34 is equal to its end face area. The force received by the spoke sensor 34 is uniform, ensuring that the operator can accurately observe the stress information of the air suspension during the test and improve the accuracy of the test. Preferably, the loading rod 36 is connected to the loading flange 37 via a bearing joint at the end near the loading assembly away from the spokes, and the vertical loading assembly 3 is fixed to the air suspension by screws.

[0038] Please continue to refer to the instruction manual appendix. Figure 1 and 6Each upright plate 31 has a rotating shaft hole on its end face. The distance from the rotating shaft hole to each second connecting hole is equal. Two bearing seats 5 are provided on both sides of each upright plate 31. Each bearing seat is fixedly connected to a longitudinal beam 14. Each bearing seat 5 has a plug hole, and each plug hole corresponds to the position of each rotating shaft hole. A connecting shaft 51 is inserted into each plug hole. The connecting shaft 51 rotatably connects each upright plate 31 to the bearing frame 1. Furthermore, a rolling bearing 53 is fixed in the plug hole. Each rolling bearing 53 is fixedly connected to the connecting shaft 51 through a bearing spacer 54. The bearing spacer 54 ensures that the installation position of the rolling bearing 53 is accurate and prevents the bearing from axially moving during operation. The rolling bearing 53 is used to reduce the friction between the bearing seat 5 and the upright plate 31 during relative rotation. In addition, a pressure cap 52 is fixed in the opposite ports of each plug hole. The pressure cap 52 is used to restrict the axial freedom of the rolling bearing 53 and prevent the connecting shaft 51 from coming out of the bearing seat 5.

[0039] Please refer to the instruction manual appendix. Figure 7 A reaction frame 4 is fixed on the support base 11. A tooling positioning plate 41 is fixed to the side wall of the reaction frame 4 by connecting bolts. The tooling positioning plate 41 is provided with clamp positioning plates 42 on both sides along the length of the bearing frame 1. A first clamp 43 is provided on the end face of the tooling positioning plate 41 away from the reaction frame 4. A second clamp 44 is provided on each clamp positioning plate 42. The first clamp 43 and the second clamp 44 cooperate with each other to fix the position of the air suspension.

[0040] Preferably, the support base 11 has a plurality of snap-fit ​​grooves 16 extending along its width direction. Specifically, each snap-fit ​​groove 16 is inverted T-shaped and evenly spaced along the length of the support base 11. The reaction frame 4 and each column 12 are fixed with mounting screws near the ends of the support base 11. The mounting screws are aligned with the snap-fit ​​grooves 16, and slid inwards along the inside of the snap-fit ​​grooves 16 to complete the fixation of the reaction frame 4, each column 12, and the support base 11. In actual use, the operator can adjust the snap-fit ​​grooves 16 connecting the columns 12 and the reaction frame 4, as well as the sliding depth within the snap-fit ​​grooves 16, according to the dimensions of the air suspension to be tested, thus adapting it to the dimensions of the air suspension.

[0041] Please refer to the instruction manual appendix. Figure 5The first hinge 21, the second hinge 29, and the third hinge 33 all include a ball joint head 61. The two ends of the ball joint head 61 are respectively provided with a double-ended bolt 62 and a hinge hole. The double-ended bolt 62 is coaxially arranged with the ball joint head 61. The other end of the double-ended bolt 62 extends to the outside of the ball joint head 61 to connect components such as the cylinder liner assembly 23 and the loading rod 36. The axis of the hinge hole is perpendicular to the axis of the double-ended bolt 62. A bushing is provided in the hinge hole, and a pin 63 passes through the bushing. Taking the connection between the second connecting hole and the loading rod 36 as an example, the double-ended bolt 62 of the third hinge 33 is threadedly connected to the spoke sensor 34, the hinge hole is aligned with the second connecting hole, and then a pin 63 is inserted into the hinge hole to complete the rotatable connection between the second connecting hole and the loading rod 36. In addition, a locking washer is also fitted on the double-ended bolt 62. Tightening the locking washer increases the pressure between the double-ended bolt 62 and the internal threads of the spoke sensor 34 to prevent the double-ended bolt 62 from slipping.

[0042] In one embodiment of this application, the operator places the test air suspension on the reaction frame 4 of the load-bearing frame 1 and locks the air suspension position using the first clamp 43 and the second clamp 44. The air suspension is then fixed to the loading flange 37 with screws. The operator then sends operating signals to the oil supply assembly and servo valve 25 via the control component. The servo valve 25 controls the opening and closing of the valve, causing the oil supply assembly to deliver hydraulic oil to the cylinder liner assembly 23 at a specified frequency. The hydraulic oil applies a thrust to the piston rod 24, causing periodic... The piston rod 24 extends and extends, applying a thrust to the top corners of each vertical plate 31. The vertical plate 31 converts the horizontal movement of the piston rod 24 into the vertical movement of the loading rod 36, while simultaneously applying fatigue load to the air springs of the two air suspensions. The amplitude and frequency are input to the servo valve 25 through the control component, causing the air springs to perform sinusoidal motion. The displacement sensor inside the cylinder liner assembly 23 collects displacement data in real time, and the wheel spoke sensor 34 in the vertical loading component 3 collects load data in real time. The load test continues for several cycles until the sample fails or meets the user's requirements.

[0043] It should be noted that in this specification, relational terms such as first and second are used only to distinguish one entity from several other entities, and do not necessarily require or imply any such actual relationship or order between these entities.

[0044] This article uses specific examples to illustrate the principles and implementation methods of the present invention. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of the present invention. It should be noted that those skilled in the art can make several improvements and modifications to the present invention without departing from the principles of the present invention, and these improvements and modifications also fall within the protection scope of the present invention.

Claims

1. An air suspension loading device, characterized in that, include: The top of the support frame (1) is rotatably provided with a vertical loading component (3). The power loading assembly (2) is located on either side of the rotation axis of the vertical loading assembly (3). The power loading assembly (2) is provided with a piston rod (24) for axial extension and retraction. The piston rod (24) is rotatably connected to the vertical loading assembly (3). Two loading rods (36) are symmetrically arranged on both sides of the rotation axis of the vertical loading assembly (3), and the loading rods (36) are rotatably connected to the vertical loading assembly (3). Each loading rod (36) is connected to a set of air suspensions, and each air suspension is fixed to the inner cavity of the bearing frame (1).

2. The air suspension loading device according to claim 1, characterized in that, The power loading assembly (2) includes a first hinge (21) rotatably connected to the bearing frame (1). The other end of the first hinge (21) is connected to a flange plate (22). A cylinder liner assembly (23) is provided on the end face of the flange plate (22) away from the first hinge (21). The piston rod (24) is slidably provided in the cylinder liner assembly (23). A servo valve (25) is fixed to the cylinder liner assembly (23) through a connecting plate (27). The servo valve (25) supplies hydraulic oil to the cylinder liner assembly (23) to drive the piston rod (24) to move axially. A second hinge (29) is connected to the end of the piston rod (24) away from the bearing frame (1).

3. The air suspension loading device according to claim 2, characterized in that, The supporting frame (1) includes a support base (11), on which four columns (12) are vertically arranged. Each column (12) has two crossbeams (13) fixed at one end away from the support base (11). Each crossbeam (13) is parallel to each other and vertically connected to each other by several longitudinal beams (14). A mounting frame (15) is fixedly connected to the longitudinal beam (14) located at any end of the support base (11) along the length direction. The mounting frame (15) is specifically an L-shaped plate. The first hinge (21) is connected to the mounting frame (15).

4. The air suspension loading device according to claim 3, characterized in that, The vertical loading component (3) includes two parallel upright plates (31), each upright plate (31) is specifically in the shape of an isosceles triangle. Several positioning guide posts (32) are vertically connected between each upright plate (31). Each positioning guide post (32) is used to lock the relative position of each upright plate (31). Each upright plate (31) has a first connecting hole and a second connecting hole at its top and bottom corners, respectively. The second hinge (29) is clamped between each upright plate (31) and is rotatably connected to the first connecting hole. Each loading rod (36) has a third hinge (33) at its end. The third hinge (33) is clamped between each upright plate (31) and is rotatably connected to each of the second connecting holes.

5. The air suspension loading device according to claim 4, characterized in that, The vertical loading component (3) is fixed to the bearing frame (1) through the bearing seat (5). A rotating shaft hole is provided between each of the second connecting holes. The bearing seat (5) is symmetrically arranged on both sides of each of the vertical plates (31), and the insertion hole of each bearing seat (5) corresponds to each of the rotating shaft holes. A rolling bearing (53) is fixed in the insertion hole. Each rolling bearing (53) is fixedly connected to a connecting shaft (51) through a bearing spacer (54), so that each of the vertical plates (31) can rotate around the connecting shaft (51). A pressure cap (52) is fixed in the port of each insertion hole that is opposite to each other. The pressure cap (52) has a function to restrict the axial degree of freedom of the rolling bearing (53).

6. The air suspension loading device according to claim 5, characterized in that, One end of the loading rod (36) is fixed with a connecting plate (35), and the connecting plate (35) is fixed with a spoke sensor (34) for detecting load. The spoke sensor (34) is connected to the third hinge (33) on the end face away from the connecting plate (35). The end of the loading rod (36) away from the upright plate (31) is connected to a loading flange (37) through a spherical bearing. The loading flange (37) is used to connect the air suspension.

7. The air suspension loading device according to claim 5, characterized in that, A reaction frame (4) is fixed on the support base (11). A tooling positioning plate (41) is fixed to the side wall of the reaction frame (4) by connecting bolts. The tooling positioning plate (41) is provided with clamp positioning plates (42) on both sides along the length direction of the bearing frame (1). A first clamp (43) is provided on the end face of the tooling positioning plate (41) away from the reaction frame (4). A second clamp (44) is provided on each clamp positioning plate (42). Each first clamp (43) and the second clamp (44) work together to fix the air suspension.

8. The air suspension loading device according to claim 7, characterized in that, The support base (11) has a snap-fit ​​groove (16) extending along its width direction. The snap-fit ​​groove (16) is specifically inverted T-shaped. The reaction frame (4) and each of the columns (12) are fixed with mounting screws at their ends near the support base (11). Each of the mounting screws can connect with the snap-fit ​​groove (16).

9. The air suspension loading device according to claim 2, characterized in that, The cylinder liner assembly (23) is connected to the oil supply assembly via the oil supply pipe (28), and the accumulator (26) is fixed at the end of the connecting plate (27).

10. The air suspension loading device according to claim 6, characterized in that, The first hinge (21), the second hinge (29), and the third hinge (33) all include a ball joint head (61). The two ends of the ball joint head (61) are respectively provided with a double-ended bolt (62) and a hinge hole. The axis of the hinge hole is perpendicular to the axis of the double-ended bolt (62). A pin (63) passes through the hinge hole.

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