Air spring drum

Abstract

The present invention provides an air spring drum. The air spring drum comprises: a main shaft assembly; a driving assembly, the driving assembly is arranged on the main shaft assembly, and at least a part of the driving assembly can move along the axial direction of the main shaft assembly; a transmission assembly, the driving assembly is connected to the transmission assembly so that the transmission assembly can move along the axial direction of the main shaft assembly; a support assembly, the support assembly is connected to the transmission assembly, and when the transmission assembly moves along the axial direction of the main shaft assembly, the transmission assembly drives the support assembly to move along the radial direction of the main shaft assembly; a drum plate assembly, the drum plate assembly is arranged around the circumference of the main shaft assembly, and the side of the drum plate assembly close to the main shaft assembly is connected to the support assembly and moves with the support assembly. The present invention solves the problem of poor performance of air spring drums in the prior art.

Description

Technical Field

[0001] The invention relates to the field of tire production equipment, in particular to an air spring drum. Background Art

[0002] The C-type air spring drum is the core component of the air spring forming machine. Its working process includes rubber adsorption, coating, rolling, and debonding. When the rubber is coated, the vacuum generator provides adsorption force and the forming machine provides power to rotate the forming drum to coat the rubber. After coating, the forming machine roller rolls it. After rolling, the spring drum is manually debonded. In the process of manual debonding, the two sides are tied with ropes, and air is blown to expand the rubber and separate it from the spring drum. Then the rope is untied to quickly remove the tire body from the drum. In addition, in the existing C-type air spring drum, the spring drum is generally a cylinder with a fixed diameter and cannot expand or shrink. Because the drum diameter cannot expand or shrink, it will lead to difficulty in debonding, excessive manual intervention, and low efficiency. At the same time, the spring drum body has a fixed diameter, and can only process fixed diameter products, and cannot achieve adjustment within a certain diameter range. Secondly, the drum and the forming machine are cantilever structures. After the rubber is coated, it needs to be rolled, and the rolling pressure will increase the force on the mandrel. If the mandrel is too thin, the drum deflection will increase and the rubber joints will not be well connected. If the mandrel is too thick, the drum itself will be too heavy.

[0003] Therefore, there is a problem in the prior art that the air spring drum has poor performance. Summary of the invention

[0004] The main purpose of the present invention is to provide an air spring drum to solve the problem of poor performance of the air spring drum in the prior art.

[0005] In order to achieve the above-mentioned purpose, according to one aspect of the present invention, an air spring drum is provided, comprising: a main shaft assembly; a driving assembly, the driving assembly is arranged on the main shaft assembly, and at least a part of the driving assembly can move along the axial direction of the main shaft assembly; a transmission assembly, the driving assembly is connected to the transmission assembly so that the transmission assembly can move along the axial direction of the main shaft assembly; a supporting assembly, the supporting assembly is connected to the transmission assembly, when the transmission assembly moves along the axial direction of the main shaft assembly, the transmission assembly drives the supporting assembly to move along the radial direction of the main shaft assembly; a drum plate assembly, the drum plate assembly is arranged around the circumference of the main shaft assembly, and the side of the drum plate assembly close to the main shaft assembly is connected to the support assembly and moves with the support assembly.

[0006] Further, the transmission assembly includes: at least one first transmission rod, which extends axially along the main shaft assembly and one end of which is drivingly connected to the driving assembly; at least one transmission member, the other end of which is connected to the transmission member, and a support assembly having a guide groove at one end facing the transmission assembly, and the transmission member having a guide protrusion that cooperates with the guide groove, so that when the driving assembly drives the first transmission rod to move axially along the main shaft assembly, the guide protrusion moves along the extension direction of the guide groove, and the support assembly moves radially along the main shaft assembly.

[0007] Furthermore, the transmission assembly also includes at least one second transmission rod, there are two transmission parts, the two transmission parts are coaxial and spaced apart along the axial direction of the main shaft assembly, one end of the first transmission rod away from the driving assembly is connected to one of the transmission parts, and both ends of the second transmission rod are respectively connected to the two transmission parts.

[0008] Further, there are a plurality of first transmission rods and a plurality of second transmission rods, and the plurality of first transmission rods and the plurality of second transmission rods are arranged at intervals along the circumference of the main shaft assembly.

[0009] Furthermore, an angle between the guide groove and the axis of the spindle assembly is greater than 0 degrees and less than 90 degrees.

[0010] Furthermore, the support assembly includes a plurality of support plates, a side of the support plate facing the transmission member has a guide groove, and there are a plurality of guide protrusions, and the plurality of guide protrusions respectively cooperate with the guide grooves of the plurality of support plates.

[0011] Further, the drum plate assembly includes: a first drum plate, there are multiple first drum plates; at least one second drum plate, the second drum plate has at least one air intake hole, and the spindle assembly has a first air duct connected to the air intake hole; a third drum plate, there are multiple third drum plates, the third drum plate has at least one exhaust hole, and the spindle assembly has a second air duct connected to the exhaust hole, the first drum plate, the second drum plate, and the third drum plate are arranged around the circumference of the spindle assembly and are respectively connected to different support plates, and the two sides of the second drum plate and the third drum plate are respectively adjacent to the first drum plate.

[0012] Furthermore, the drum plate assembly also includes a fourth drum plate, which is fixedly provided on both sides of the first drum plate, and one end of the fourth drum plate away from the corresponding first drum plate is overlapped with the second drum plate or the third drum plate, and the overlapping area between the fourth drum plate and the second drum plate or the third drum plate changes with the movement of the supporting plate.

[0013] Furthermore, there are four first drum plates, one second drum plate, and three third drum plates, and one first drum plate is provided between a second drum plate and an adjacent third drum plate and between two adjacent third drum plates.

[0014] Furthermore, the air spring drum also includes two wall panels, which are symmetrical relative to the drum plate assembly and fixedly arranged on the main shaft assembly. The two wall panels have multiple limit grooves on opposite sides respectively, and the multiple limit grooves correspond one-to-one to the multiple support plates, and the two ends of the support plates are respectively movably arranged in the corresponding limit grooves and can move along the extension direction of the limit grooves.

[0015] Furthermore, the spindle assembly comprises an inner spindle and an outer spindle, the support assembly and the transmission assembly are respectively arranged on the outer spindle, and the drum plate assembly is arranged around the circumference of the outer spindle.

[0016] Furthermore, the driving assembly includes: a push plate assembly, which is movably arranged on the inner main shaft and can move axially along the inner main shaft; a connecting sleeve, which is sleeved on the inner main shaft, and one end of the connecting sleeve is connected to the push plate assembly, so that the push plate assembly can drive the connecting sleeve to move axially along the inner main shaft; at least one connecting rod, one end of the connecting rod is connected to the connecting sleeve; an adapter ring structure, which is movably arranged on the outer main shaft, the other end of the connecting rod is connected to the adapter ring structure, and the end of the adapter ring structure away from the connecting rod is connected to the first transmission rod of the transmission assembly.

[0017] By applying the technical solution of the present invention, the air spring drum in the present application includes a main shaft assembly, a driving assembly, a transmission assembly, a supporting assembly and a drum plate assembly. The driving assembly is arranged on the main shaft assembly, and at least a part of the driving assembly can move along the axial direction of the main shaft assembly; the driving assembly is drivingly connected to the transmission assembly so that the transmission assembly can move along the axial direction of the main shaft assembly; the supporting assembly is drivingly connected to the transmission assembly, and when the transmission assembly moves along the axial direction of the main shaft assembly, the transmission assembly drives the supporting assembly to move along the radial direction of the main shaft assembly; the drum plate assembly is arranged around the circumference of the main shaft assembly, and the side of the drum plate assembly close to the main shaft assembly is connected to the supporting assembly and moves with the supporting assembly.

[0018] When the air spring drum in the present application is used, the driving assembly can drive the transmission assembly to move axially along the main shaft assembly, so that the transmission assembly can drive the support assembly to move radially along the main shaft assembly, and the support assembly drives the drum plate assembly to move radially along the main shaft assembly, thereby achieving radial contraction of the air spring drum, and making it easier for the carcass to be separated from the drum plate assembly. Therefore, the air spring drum in the present application effectively solves the problem of poor performance of the air spring drum in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0020] Figure 1A schematic diagram showing the internal structure of an air spring drum according to a specific embodiment of the present invention is shown;

[0021] Figure 2 A schematic diagram of the structure of the air spring drum in the present application is shown;

[0022] Figure 3 A schematic diagram showing the positional relationship between the first drum plate, the second drum plate, the third drum plate and the fourth drum plate of the drum plate assembly of the air spring drum in the present application is shown;

[0023] Figure 4 A schematic diagram showing the positional relationship between the transmission assembly and the support assembly of the air spring drum in the present application is shown.

[0024] The above drawings include the following reference numerals:

[0025] 10. Spindle assembly; 11. Inner spindle; 12. Outer spindle; 20. Drive assembly; 21. Push plate assembly; 22. Connecting sleeve; 23. Connecting rod; 24. Adapter ring structure; 30. Transmission assembly; 31. First transmission rod; 32. Transmission member; 321. Guide protrusion; 33. Second transmission rod; 40. Support assembly; 41. Guide groove; 42. Support plate; 50. Drum plate assembly; 51. First drum plate; 52. Second drum plate; 521. Air intake hole; 53. Third drum plate; 531. Air exhaust hole; 54. Fourth drum plate; 60. Wall panel. DETAILED DESCRIPTION

[0026] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0027] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meanings as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0028] In the present invention, unless otherwise specified, the directional words used, such as "up, down, top, bottom", usually refer to the directions shown in the drawings, or to the components themselves in the vertical, perpendicular or gravity directions; similarly, for ease of understanding and description, "inside and outside" refer to the inside and outside relative to the outline of each component itself, but the above-mentioned directional words are not used to limit the present invention.

[0029] In order to solve the problem of poor performance of air spring drums in the prior art, the present application provides an air spring drum.

[0030] It should be noted that the air spring drum in the present application is a C-type air spring drum.

[0031] like Figures 1 to 4As shown, the air spring drum in the present application includes a spindle assembly 10, a drive assembly 20, a transmission assembly 30, a support assembly 40 and a drum plate assembly 50. The drive assembly 20 is arranged on the spindle assembly 10, and at least a part of the drive assembly 20 can move along the axial direction of the spindle assembly 10; the drive assembly 20 is drivingly connected to the transmission assembly 30 so that the transmission assembly 30 can move along the axial direction of the spindle assembly 10; the support assembly 40 is drivingly connected to the transmission assembly 30, and when the transmission assembly 30 moves along the axial direction of the spindle assembly 10, the transmission assembly 30 drives the support assembly 40 to move along the radial direction of the spindle assembly 10; the drum plate assembly 50 is arranged around the circumference of the spindle assembly 10, and the side of the drum plate assembly 50 close to the spindle assembly 10 is connected to the support assembly 40 and moves with the support assembly 40.

[0032] When the air spring drum in the present application is used, the driving assembly 20 can drive the transmission assembly 30 to move axially along the main shaft assembly 10, so that the transmission assembly 30 can drive the support assembly 40 to move radially along the main shaft assembly 10, and the support assembly 40 drives the drum plate assembly 50 to move radially along the main shaft assembly 10, thereby achieving radial contraction of the air spring drum, and then making it easier for the carcass to be separated from the drum plate assembly 50. Therefore, the air spring drum in the present application effectively solves the problem of poor performance of the air spring drum in the prior art.

[0033] Specifically, the transmission assembly 30 includes at least one first transmission rod 31 and at least one transmission member 32. The first transmission rod 31 extends along the axial direction of the spindle assembly 10, and one end of the first transmission rod 31 is drivingly connected to the drive assembly 20; the other end of the first transmission rod 31 is connected to the transmission member 32, and the support assembly 40 has a guide groove 41 at one end facing the transmission assembly 30, and the transmission member 32 has a guide protrusion 321 that cooperates with the guide groove 41. When the drive assembly 20 drives the first transmission rod 31 to move along the axial direction of the spindle assembly 10, the guide protrusion 321 moves along the extension direction of the guide groove 41, and the support assembly 40 moves along the radial direction of the spindle assembly 10.

[0034] In a specific embodiment of the present application, the transmission assembly 30 further includes at least one second transmission rod 33, and there are two transmission members 32. The two transmission members 32 are coaxial and spaced along the axial direction of the spindle assembly 10, and one end of the first transmission rod 31 away from the drive assembly 20 is connected to one of the transmission members 32, and the two ends of the second transmission rod 33 are respectively connected to the two transmission members 32. It should be noted that in this embodiment, the transmission member 32 is disc-shaped, and the circumference of the disc is provided with a guide protrusion 321 that cooperates with the guide groove 41. At the same time, the center of the transmission member 32 has a through-hole structure, and is sleeved on the spindle assembly 10 through the through-hole structure.

[0035] Preferably, there are multiple first transmission rods 31 and multiple second transmission rods 33, and the multiple first transmission rods 31 and multiple second transmission rods 33 are arranged at intervals along the circumference of the spindle assembly 10. This arrangement can ensure that the force on the transmission member 32 is more stable.

[0036] Optionally, an angle between the guide groove 41 and the axis of the spindle assembly 10 is greater than 0 degrees and less than 90 degrees.

[0037] Specifically, the support assembly 40 includes a plurality of support plates 42, and the support plates 42 have a guide groove 41 on one side facing the transmission member 32. There are a plurality of guide protrusions 321, and the plurality of guide protrusions 321 are respectively matched with the guide grooves 41 of the plurality of support plates 42. By such an arrangement, when the two transmission members 32 are driven by the first transmission rod 31 and the second transmission rod 33 to move, it can be ensured that the two transmission members 32 can simultaneously drive all the support plates 42 to move together.

[0038] Specifically, the drum plate assembly 50 includes a first drum plate 51, at least one second drum plate 52, and a third drum plate 53. The first drum plate 51 is multiple; the second drum plate 52 has at least one air suction hole 521, and the spindle assembly 10 has a first air passage connected to the air suction hole 521; the third drum plate 53 is multiple, and the third drum plate 53 has at least one exhaust hole 531, and the spindle assembly 10 has a second air passage connected to the exhaust hole 531. The first drum plate 51, the second drum plate 52, and the third drum plate 53 are arranged around the circumference of the spindle assembly 10 and are respectively connected to different support plates 42, and the two sides of the second drum plate 52 and the third drum plate 53 are respectively adjacent to the first drum plate 51. That is to say, in the present application, the drum plate assembly 50 can absorb the rubber through the air suction hole 521 of the second drum plate 52, and blow air outward through the exhaust hole 531 of the third drum plate 53, and the support assembly 40 drives the drum plate assembly 50 to shrink along the radial direction of the spindle assembly 10, so that the carcass can be more easily removed.

[0039] Optionally, in the present application, the drum plate assembly 50 further includes a plurality of air pipes, and the air intake holes 521 and the air exhaust holes 531 are respectively connected to the first air passage or the second air passage through the air pipes.

[0040] In a specific embodiment of the present application, the drum plate assembly 50 further includes a fourth drum plate 54, and the fourth drum plates 54 are fixedly arranged on both sides of the first drum plate 51, and one end of the fourth drum plate 54 away from the corresponding first drum plate 51 overlaps the second drum plate 52 or the third drum plate 53, and the overlap area between the fourth drum plate 54 and the second drum plate 52 or the third drum plate 53 changes with the movement of the support plate 42. In addition, there are four first drum plates 51, one second drum plate 52, and three third drum plates 53, and one first drum plate 51 is arranged between the second drum plate 52 and the adjacent third drum plate 53, and between two adjacent third drum plates 53. When the drum plate assembly 50 expands in the radial direction of the spindle assembly 10 under the action of the support assembly 40, gaps will be generated between the second drum plate 52 and the first drum plate 51, and between the third drum plate 53 and the first drum plate 51, so the fourth drum plate 54 can cover the generated gaps, thereby ensuring that the drum plate assembly 50 is a seamless structure when expanding or contracting.

[0041] Specifically, the air spring drum also includes two wall panels 60, which are symmetrical with respect to the drum plate assembly 50 and fixedly arranged on the main shaft assembly 10, and the two wall panels 60 have a plurality of limit grooves on opposite sides, and the plurality of limit grooves correspond to the plurality of support plates 42 one by one, and the two ends of the support plates 42 are respectively movably arranged in the corresponding limit grooves and can move along the extension direction of the limit grooves. When the transmission assembly 30 drives the support assembly 40 to move, due to the friction between the transmission assembly 30 and the support assembly 40, the support assembly 40 will tend to move axially along the main shaft assembly 10 under the action of the friction force. Therefore, by setting the wall panels 60, the movement of the support assembly 40 can be limited, thereby ensuring that the support assembly 40 can only move radially along the main shaft assembly 10.

[0042] Optionally, the spindle assembly 10 includes an inner spindle 11 and an outer spindle 12 , the support assembly 40 and the transmission assembly 30 are respectively arranged on the outer spindle 12 , and the drum plate assembly 50 is arranged around the circumference of the outer spindle 12 .

[0043] It should be noted that, in a specific embodiment of the present application, the diameter of the outer spindle 12 is smaller than the diameter of the inner spindle 11. This arrangement can effectively reduce the overall weight of the spindle assembly 10.

[0044] Optionally, the driving assembly 20 includes: a push plate assembly 21, which is movably arranged on the inner main shaft 11 and can move axially along the inner main shaft 11; a connecting sleeve 22, which is sleeved on the inner main shaft 11, and one end of the connecting sleeve 22 is connected to the push plate assembly 21, so that the push plate assembly 21 can drive the connecting sleeve 22 to move axially along the inner main shaft 11; at least one connecting rod 23, one end of the connecting rod 23 is connected to the connecting sleeve 22; an adapter ring structure 24, which is movably arranged on the outer main shaft 12, the other end of the connecting rod 23 is connected to the adapter ring structure 24, and the end of the adapter ring structure 24 away from the connecting rod 23 is connected to the first transmission rod 31 of the transmission assembly 30.

[0045] From the above description, it can be seen that the above embodiments of the present invention achieve the following technical effects:

[0046] 1. Effectively solve the problem of poor performance of air spring drum in the prior art;

[0047] 2. Simple structure and stable performance.

[0048] Obviously, the above-described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0049] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0050] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein.

[0051] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An air spring drum, characterized in that: include: Spindle assembly (10); A drive assembly (20), wherein the drive assembly (20) is arranged on the spindle assembly (10), and at least a portion of the drive assembly (20) is capable of moving along the axial direction of the spindle assembly (10); a transmission assembly (30), the drive assembly (20) being drivingly connected to the transmission assembly (30) so that the transmission assembly (30) can move along the axial direction of the spindle assembly (10); a support assembly (40), wherein the support assembly (40) is drivingly connected to the transmission assembly (30), and when the transmission assembly (30) moves along the axial direction of the spindle assembly (10), the transmission assembly (30) drives the support assembly (40) to move along the radial direction of the spindle assembly (10); a drum plate assembly (50), wherein the drum plate assembly (50) is arranged around the circumference of the main shaft assembly (10), and a side of the drum plate assembly (50) close to the main shaft assembly (10) is connected to the support assembly (40) and moves with the support assembly (40); The transmission assembly (30) comprises: at least one first transmission rod (31), the first transmission rod (31) extending along the axial direction of the spindle assembly (10), and one end of the first transmission rod (31) being drivingly connected to the driving assembly (20); at least one transmission member (32), the other end of the first transmission rod (31) is connected to the transmission member (32), the support assembly (40) has a guide groove (41) at one end facing the transmission assembly (30), the transmission member (32) has a guide protrusion (321) matched with the guide groove (41), when the drive assembly (20) drives the first transmission rod (31) to move along the axial direction of the spindle assembly (10), the guide protrusion (321) moves along the extension direction of the guide groove (41), and the support assembly (40) moves along the radial direction of the spindle assembly (10); The support assembly (40) comprises a plurality of support plates (42), wherein the support plate (42) has a guide groove (41) on one side facing the transmission member (32), and the guide protrusions (321) are multiple, and the multiple guide protrusions (321) respectively cooperate with the guide grooves (41) of the multiple support plates (42).

2. The air spring drum according to claim 1, characterized in that The transmission assembly (30) further comprises at least one second transmission rod (33), the number of the transmission members (32) being two, the two transmission members (32) being coaxially arranged and spaced apart along the axial direction of the spindle assembly (10), the end of the first transmission rod (31) away from the drive assembly (20) being connected to one of the transmission members (32), and the two ends of the second transmission rod (33) being respectively connected to the two transmission members (32).

3. The air spring drum according to claim 2, characterized in that There are a plurality of the first transmission rod (31) and a plurality of the second transmission rod (33), and the plurality of the first transmission rods (31) and the plurality of the second transmission rods (33) are arranged at intervals along the circumference of the main shaft assembly (10).

4. The air spring drum according to claim 1, characterized in that An included angle between the guide groove (41) and the axis of the spindle assembly (10) is greater than 0 degrees and less than 90 degrees.

5. The air spring drum according to claim 1, characterized in that The drum plate assembly (50) comprises: a first drum plate (51), wherein the first drum plate (51) is in plurality; at least one second drum plate (52), the second drum plate (52) having at least one air suction hole (521), and the main shaft assembly (10) having a first air passage communicating with the air suction hole (521); A third drum plate (53), wherein there are a plurality of third drum plates (53), each of the third drum plates (53) has at least one exhaust hole (531), and the spindle assembly (10) has a second air passage connected to the exhaust hole (531); the first drum plate (51), the second drum plate (52), and the third drum plate (53) are arranged around the circumference of the spindle assembly (10) and are respectively connected to different support plates (42); and both sides of the second drum plate (52) and the third drum plate (53) are respectively adjacent to the first drum plate (51).

6. The air spring drum according to claim 5, characterized in that The drum plate assembly (50) further comprises a fourth drum plate (54), and the fourth drum plates (54) are fixedly arranged on both sides of the first drum plate (51), and one end of the fourth drum plate (54) away from the corresponding first drum plate (51) overlaps with the second drum plate (52) or the third drum plate (53), and the overlapping area between the fourth drum plate (54) and the second drum plate (52) or the third drum plate (53) changes with the movement of the support plate (42).

7. The air spring drum according to claim 5, characterized in that There are four first drum plates (51), one second drum plate (52), and three third drum plates (53), and one first drum plate (51) is provided between each second drum plate (52) and an adjacent third drum plate (53), and between two adjacent third drum plates (53).

8. The air spring drum according to claim 1, characterized in that The air spring drum further comprises two wall panels (60), the two wall panels (60) are symmetrical with respect to the drum plate assembly (50) and are fixedly arranged on the main shaft assembly (10), and the two wall panels (60) have a plurality of limit grooves on opposite sides thereof, the plurality of limit grooves correspond one to one with the plurality of support plates (42), and the two ends of the support plates (42) are respectively movably arranged in the corresponding limit grooves and can move along the extension direction of the limit grooves.

9. The air spring drum according to any one of claims 1 to 8, characterized in that The spindle assembly (10) comprises an inner spindle (11) and an outer spindle (12); the support assembly (40) and the transmission assembly (30) are respectively arranged on the outer spindle (12); and the drum plate assembly (50) is arranged around the circumference of the outer spindle (12).

10. The air spring drum according to claim 9, characterized in that The driving assembly (20) comprises: A push plate assembly (21), the push plate assembly (21) being movably disposed on the inner main shaft (11) and being capable of moving along the axial direction of the inner main shaft (11); A connecting sleeve (22), wherein the connecting sleeve (22) is sleeved on the inner main shaft (11), and one end of the connecting sleeve (22) is connected to the push plate assembly (21), so that the push plate assembly (21) can drive the connecting sleeve (22) to move axially along the inner main shaft (11); at least one connecting rod (23), one end of the connecting rod (23) being connected to the connecting sleeve (22); An adapter ring structure (24), wherein the adapter ring structure (24) is movably arranged on the outer main shaft (12), the other end of the connecting rod (23) is connected to the adapter ring structure (24), and the end of the adapter ring structure (24) away from the connecting rod (23) is connected to the first transmission rod (31) of the transmission assembly (30).

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