Equalizing beam for air suspension

Abstract

The application relates to an equalizing beam for an air suspension, and relates to the technical field of equalizing beams, which comprises an equalizing beam body, the equalizing beam body comprises an upper beam plate which is arranged in a U shape through bending, the upper beam plate is arranged in an arc shape on one side of an opening, and the arc shape gradually protrudes from both ends to the middle, a lower beam plate is welded on the upper beam plate and is distributed along the arc shape, a cavity is formed between the upper beam plate and the lower beam plate, a connecting plate for connecting an axle is arranged above the upper beam plate, and support plates for connecting air bags are arranged at both ends of the upper beam plate. The application has the effect of improving the utilization degree of the equalizing beam.

Description

Technical Field

[0001] This application relates to the field of equalization beams, and more particularly to an equalization beam for air suspension. Background Technology

[0002] For a long time, leaf springs have been widely used as traditional elastic elements in the suspension systems of various transport vehicles. In recent years, with the increasing demands for ride comfort and smoothness, air suspension has developed rapidly in the Chinese market and its application in commercial vehicles has become increasingly widespread. At the same time, utilizing new structures and processes to achieve lightweight upgrades for the entire vehicle, effectively reducing fuel consumption and emissions, and improving transportation efficiency has always been a research direction for OEMs in the commercial vehicle sector.

[0003] The balance beam, as a crucial load-bearing structural component of air suspension, is widely used in single-axle air suspension vehicles. The balance beam also integrates mounting functions with the axle, airbag, stabilizer bar, thrust bar, and shock absorber.

[0004] Reference Figure 1 The main body of the equilibrium beam is usually cast in the shape of a rectangular tube. The production of rectangular tubes is simpler and more convenient. However, the main body of the equilibrium beam in the shape of a rectangular tube has many parts that do not bear the load, resulting in a waste of materials. As a result, the equilibrium beam has a large volume and wall thickness, a large weight, and cannot be used efficiently. Summary of the Invention

[0005] The purpose of this application is to provide a balance beam for air suspension to improve the utilization of the balance beam.

[0006] The present application provides a balanced beam for air suspension, which adopts the following technical solution:

[0007] An air suspension equalization beam includes an equalization beam body, the equalization beam body including an upper beam plate bent into a U-shape, the upper beam plate having an arc-shaped edge on one side of the opening, and the arc-shaped edge gradually protruding from both ends to the middle, a lower beam plate welded to the upper beam plate and distributed along the arc-shaped edge, a cavity being formed between the upper beam plate and the lower beam plate, a connecting plate for connecting the axle is provided above the upper beam plate, and support plates for connecting the airbag are provided at both ends of the upper beam plate.

[0008] By adopting the above technical solution, the main body of the balance beam is connected to the axle through the connecting plate, and the support plate is connected to the airbag, thereby bearing the air suspension. The main body of the balance beam, composed of the upper beam plate and the lower beam plate, gradually thickens from both ends to the middle, removing the parts at both ends that cannot bear the force, while ensuring the structural force of the main body of the balance beam to meet the support requirements of the air suspension. This makes each part of the main body of the balance beam bear the force and improves the overall utilization effect of the balance beam.

[0009] Optionally, the connecting plate has multiple welding holes facing the upper beam plate, and the connecting plate has connecting holes on both sides for installing the axle.

[0010] By adopting the above technical solution, the connecting plate and the upper beam plate can be welded at the welding holes, increasing the welding area and thus improving the stability of the connection between the connecting plate and the upper beam plate.

[0011] Optionally, the connecting plate is also provided with positioning posts for positioning the axle.

[0012] By adopting the above technical solution, the positioning column can quickly align and adjust the position of the axle and the connecting plate, facilitating the installation between the connecting plate and the axle and improving installation efficiency.

[0013] Optionally, the upper beam plate is also provided with a lug for connecting the thrust rod, one side of which is located between the connecting plate and the upper beam plate and is directly opposite one of the welding holes.

[0014] By adopting the above technical solution, the lug is welded to the connecting plate at the welding hole, making the connection between the lug, the connecting plate, and the upper beam plate more solid, thereby improving the overall stability of the equalization beam.

[0015] Optionally, the inner walls on both sides of the upper beam plate are provided with snap-fit ​​grooves parallel to the arc-shaped edges, and both sides of the lower beam plate are provided with snap-fit ​​plates that abut against the inner wall of the upper beam plate. The snap-fit ​​plates are provided with snap-fit ​​blocks that are inserted into the snap-fit ​​grooves, and the side of the snap-fit ​​block away from the lower beam plate is set as an arc-shaped surface.

[0016] By adopting the above technical solution, when the lower beam plate connects to the upper beam plate at the opening, the arc surface of the snap-fit ​​block abuts against the side of the upper beam plate, so that the snap-fit ​​block can slide into the snap-fit ​​groove and is difficult to slide out of the snap-fit ​​groove in the opposite direction. This allows the lower beam plate and the upper beam plate to be snapped together in advance, and then the upper beam plate and the lower beam plate are welded together, which further improves the firmness of the connection between the upper beam plate and the lower beam plate.

[0017] Optionally, a buffer column is provided between the support plate and the upper beam plate, with one end of the buffer column passing through the cavity, and a buffer assembly connecting the buffer column is also provided in the cavity.

[0018] By adopting the above technical solution, when the support plate deforms under stress, the support plate squeezes the buffer column, and the buffer assembly provides support for the buffer column, thereby reducing the degree of deformation of the main body of the equalization beam.

[0019] Optionally, the buffer assembly includes a support frame located in the middle of the cavity. The support frame is fixedly connected to the inner wall of the upper beam plate. A slider is slidably connected to the support frame. A support spring is also provided between the slider and the support frame to connect the two. Connecting rods are provided on both sides of the slider. The support frame is hinged at the middle of the connecting rod. One end of the connecting rod is rotatably and slidably connected to the slider, and the other end is rotatably and slidably connected to the buffer column.

[0020] By adopting the above technical solution, when one of the buffer columns presses down on the connecting rod, the connecting rod rotates around the hinge point that is hinged to the support frame. The other end of the connecting rod drives the slider to tilt upward, and at the same time, the slider drives the other connecting rod to rotate. This causes the other buffer column to receive a downward pulling force, so that both ends of the equal beam are subjected to forces in the same direction, thereby maintaining the stability of the equal beam and reducing damage.

[0021] Optionally, multiple opposing positioning grooves are provided on the inner walls of both sides of the upper beam plate. Support columns are inserted into the positioning grooves, and a connecting rod is slidably connected between two opposing support columns. The connecting rod and the connecting rod are rotatably and slidably connected. Positioning springs for supporting the connecting rod are provided on both the upper beam plate and the lower beam plate.

[0022] By adopting the above technical solution, during the rotation of the connecting rod, the connecting rod slides relative to the support column. The connecting rod applies force to the upper and lower beam plates through the positioning spring. As a result, the pressure on the buffer column is distributed to the main body of the equalization beam, thereby reducing the force borne by each part of the main body of the equalization beam and reducing the possibility of deformation of the main body of the equalization beam due to excessive local pressure.

[0023] Optionally, the connecting rod has multiple oblong holes, the connecting rod passes through the corresponding oblong holes, and both the buffer column and the slider are provided with sliding rods, which pass through the corresponding oblong holes.

[0024] By adopting the above technical solution, both the slide rod and the connecting rod pass through the waist-shaped hole of the connecting rod, so that the slide can rotate relative to the connecting rod and slide along the direction of the waist-shaped hole.

[0025] In summary, this application includes at least one of the following beneficial technical effects:

[0026] 1. The main body of the equalization beam, composed of the upper beam plate and the lower beam plate, gradually thickens from both ends to the middle. The parts at both ends that cannot bear the load are removed, while ensuring the structural strength of the main body of the equalization beam and meeting the support requirements for the air suspension. This makes each part of the main body of the equalization beam bear the load and improves the overall utilization effect of the equalization beam.

[0027] 2. When the support plate deforms under stress, the support plate compresses the buffer column, and the buffer assembly provides support to the buffer column, thereby reducing the degree of deformation of the main body of the equalization beam. Attached Figure Description

[0028] Figure 1 This is a structural diagram of existing technology;

[0029] Figure 2 This is a schematic diagram of the overall structure of Embodiment 1 of this application;

[0030] Figure 3 This is an exploded structural diagram of Embodiment 2 of this application;

[0031] Figure 4 This is a cross-sectional structural diagram of Embodiment 2 of this application;

[0032] In the diagram, 1. Main body of the equalizing beam; 11. Upper beam plate; 111. Snap-fit ​​groove; 12. Lower beam plate; 121. Snap-fit ​​plate; 122. Snap-fit ​​block; 123. Positioning groove; 2. Connecting plate; 21. Welding hole; 22. Connecting hole; 23. Positioning column; 3. Support plate; 4. Ear seat; 41. Fixing plate; 5. Buffer column; 6. Buffer assembly; 61. Support frame; 62. Slider; 63. Support spring; 64. Connecting rod; 641. Waist-shaped hole; 65. Connecting rod; 66. Slide rod; 67. Positioning spring; 68. Support column. Detailed Implementation

[0033] The following is in conjunction with the appendix Figure 1 - Appendix Figure 4 This application will be described in further detail below.

[0034] Example 1: A balance beam for air suspension, referring to... Figure 2 The system includes a balance beam body 1, which comprises an upper beam plate 11 and a lower beam plate 12. The upper beam plate 11 has a U-shaped cross-section, and the lower beam plate 12 is located at the opening of the upper beam plate 11. The side of the upper beam plate 11 closest to the lower beam plate 12 is arc-shaped, and the arc-shaped edge of the upper beam plate 11 protrudes from both ends to the middle towards the side of the lower beam plate 12. The lower beam plate 12 is arranged along the arc-shaped plate shape of the upper beam plate 11 and is welded to seal the opening of the beam plate, forming a cavity between the upper beam plate 11 and the lower beam plate 12.

[0035] A connecting plate 2 is located in the middle of the side of the upper beam plate 11 away from the lower beam plate 12. Three welding holes 21 are formed in the middle of the connecting plate 2, directly opposite the upper beam plate 11. The connecting plate 2 and the upper beam plate 11 are welded into these welding holes 21. Connecting holes 22 are also formed at the four corners of the connecting plate 2. Positioning posts 23, fixed to the connecting plate 2, are located between two of the connecting holes 22, and also between the other two connecting holes 22. The connecting plate 2 allows for quick alignment and installation with the axle via the positioning posts 23. Bolts can also be installed in the connecting holes 22 for securing the axle.

[0036] A lug 4 is welded onto the upper beam plate 11. A fixing plate 41 is fixed to one side of the lug 4. The fixing plate 41 is inserted between the connecting plate 2 and the upper beam plate 11 and is directly opposite one of the welding holes 21. The connecting plate 2 and the fixing plate 41 can be welded in the welding hole 21, thereby improving the stability of the lug 4.

[0037] Support plates 3 are fixedly connected to both ends of the upper beam plate 11. One side of the support plate 3 is fixed to the side of the upper beam plate 11 away from the lower beam plate 12, and the airbag is installed on the side of the support plate 3 away from the upper beam plate 11. The other side of the support plate 3 seals the port of the cavity.

[0038] The implementation principle of Embodiment 1 of this application is as follows: The main body of the equalization beam 1 is connected to the axle through the connecting plate 2, and the support plate 3 is connected to the airbag, thereby bearing the air suspension. The main body of the equalization beam 1, which is composed of the upper beam plate 11 and the lower beam plate 12, gradually becomes thicker from both ends to the middle, removing the parts at both ends that cannot bear the force, while ensuring the structural force of the main body of the equalization beam 1 and meeting the support requirements for the air suspension.

[0039] Example 2: Refer to Figure 2 and Figure 3 The difference from Embodiment 1 is that a snap-fit ​​groove 111 parallel to the arc-shaped edge of the upper beam plate 11 is provided on the inner wall of both sides of the upper beam plate 11, and a snap-fit ​​plate 121 is fixedly connected to both sides of the lower beam plate 12. The snap-fit ​​plate 121 abuts against the inner wall of the upper beam plate 11, and a snap-fit ​​block 122 is fixedly connected to the snap-fit ​​plate 121. The snap-fit ​​block 122 is inserted into the snap-fit ​​groove 111.

[0040] When the lower beam plate 12 is connected to the opening of the upper beam plate 11, the arc surface of the snap-fit ​​block 122 abuts against the side of the upper beam plate 11, so that the snap-fit ​​block 122 can slide into the snap-fit ​​groove 111 and is difficult to slide out of the snap-fit ​​groove 111 in the opposite direction. This allows the lower beam plate 12 and the upper beam plate 11 to be snapped together in advance, and then the upper beam plate 11 and the lower beam plate 12 are welded together.

[0041] A buffer column 5 is fixedly connected to the side of the support plate 3 away from the airbag. The end of the buffer column 5 away from the support plate 3 is inserted into the cavity, and a buffer assembly 6 for connecting the buffer is provided in the cavity.

[0042] The buffer assembly 6 includes a support frame 61 disposed in the cavity. The support frame 61 is located at the center of the cavity. One end of the support frame 61 is fixedly connected to the upper beam plate 11, and the other end abuts against the lower beam plate 12. A slider 62 is slidably connected to the support frame 61, and a support spring 63 is provided between the slider 62 and the support frame 61 to connect the two.

[0043] Both sides of the slider 62 are provided with connecting rods 64, which are rotatably connected to the support frame 61. Both ends of the connecting rods 64 are provided with oblong holes 641, and sliding rods 66 are inserted into the oblong holes 641. One sliding rod 66 is fixedly connected to the slider 62, and the other sliding rod 66 is fixedly connected to the buffer column 5. Between the buffer column 5 and the slider 62, there are also a number of connecting rods 65 distributed along the length of the cavity. Both ends of the connecting rods 65 are slidably connected to support columns 68. The inner wall of the upper beam plate 11 is provided with a positioning groove 123, and the support column 68 is inserted into the positioning groove 123. One end of the support column 68 abuts against the inner top wall of the upper beam plate 11, and the other end abuts against the snap-fit ​​plate 121. A waist-shaped hole 641 corresponding to the connecting rod 65 is also provided on the connecting rod 64. The connecting rod 65 passes through the waist-shaped hole 641, so that the connecting rod 65 can rotate and slide in the waist-shaped hole 641. Positioning springs 67 are fixedly connected to both sides of the connecting rod 65. The end of the positioning spring 67 away from the connecting rod 65 abuts against the upper beam plate 11 or the lower beam plate 12.

[0044] When one of the buffer pillars 5 presses down on the connecting rod 64, the connecting rod 64 rotates around the hinge point that is hinged to the support frame 61. The other end of the connecting rod 64 drives the slider 62 to tilt upward. At the same time, the slider 62 drives the other connecting rod 64 to rotate, thereby causing the other buffer pillar 5 to receive a downward pulling force. As a result, both ends of the equalizing beam body 1 are subjected to forces in the same direction. During the rotation of the connecting rod 64, the connecting rod 64 drives the connecting rod 65 to slide relative to the support pillar 68. The connecting rod 65 applies force to the upper beam plate 11 and the lower beam plate 12 through the positioning spring 67. As a result, the pressure on the buffer pillar 5 is distributed to the equalizing beam body 1, thereby reducing the force borne by each part of the equalizing beam body 1.

[0045] The implementation principle of Embodiment 2 of this application is as follows: before the lower beam plate 12 blocks the upper beam plate 11, the support column 68 is inserted into the positioning groove 123 of the upper beam plate 11, and then the lower beam plate 12 is snapped onto the upper beam plate 11, and then welding is performed, thereby installing the buffer assembly 6 into the cavity, and the buffer column 5 cooperates with the buffer assembly 6 to support the support plate 3.

[0046] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, all equivalent changes made to the structure, shape, and principle of this application should be covered within the scope of protection of this application.

Claims

1. A balance beam for air suspension, characterized in that, The system includes a balance beam body (1), which includes an upper beam plate (11) bent into a U-shape. The upper beam plate (11) has an arc-shaped edge on one side of the opening, and the arc-shaped edge gradually protrudes from both ends to the middle. A lower beam plate (12) distributed along the arc-shaped edge is welded onto the upper beam plate (11). A cavity is formed between the upper beam plate (11) and the lower beam plate (12). A connecting plate (2) for connecting the axle is provided above the upper beam plate (11). Support plates (3) for connecting the airbag are provided at both ends of the upper beam plate (11). A buffer column (5) is provided between the support plate (3) and the upper beam plate (11). One end of the buffer column (5) passes through the cavity. A buffer assembly (6) connecting the buffer column (5) is also provided in the cavity. The buffer assembly (6) includes a support frame (61) located in the middle of the cavity. The support frame (61) is fixedly connected to the inner wall of the upper beam plate (11). A slider (62) is slidably connected to the support frame (61). A support spring (63) is also provided between the slider (62) and the support frame (61). A connecting rod (64) is provided on both sides of the slider (62). The support frame (61) is hinged to the middle of the connecting rod (64). One end of the connecting rod (64) is rotatably and slidably connected to the slider (62), and the other end is rotatably and slidably connected to the buffer column (5). Multiple opposing positioning grooves (123) are provided on the inner walls of both sides of the upper beam plate (11). A support column (68) is inserted into the positioning groove (123). A connecting rod (65) is slidably connected between two opposing support columns (68). The connecting rod (64) and the connecting rod (65) are rotatably and slidably connected. Positioning springs (67) for supporting the connecting rod (65) are provided on both the upper beam plate (11) and the lower beam plate (12). The connecting rod (64) has multiple waist-shaped holes (641), the connecting rod (65) passes through the corresponding waist-shaped hole (641), and the buffer column (5) and the slider (62) are both provided with sliding rods (66), the sliding rods (66) pass through the corresponding waist-shaped holes (641).

2. The air suspension equalization beam according to claim 1, characterized in that, The connecting plate (2) has multiple welding holes (21) facing the upper beam plate (11), and the connecting plate (2) has connecting holes (22) on both sides for installing the axle.

3. The air suspension equalization beam according to claim 2, characterized in that, The connecting plate (2) is also provided with a positioning post (23) for positioning the axle.

4. The air suspension equalization beam according to claim 2, characterized in that, The upper beam plate (11) is also provided with a lug (4) for connecting the thrust rod. One side of the lug (4) is located between the connecting plate (2) and the upper beam plate (11) and is directly opposite one of the welding holes (21).

5. The air suspension equalization beam according to claim 1, characterized in that, The inner walls on both sides of the upper beam plate (11) are provided with snap-fit ​​grooves (111) parallel to the arc-shaped edge. Both sides of the lower beam plate (12) are provided with snap-fit ​​plates (121) that abut against the inner wall of the upper beam plate (11). The snap-fit ​​plates (121) are provided with snap-fit ​​blocks (122) that are inserted into the snap-fit ​​grooves (111). The side of the snap-fit ​​block (122) away from the lower beam plate (12) is set as an arc-shaped surface.

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