Air spring inner support ring installation equipment

Abstract

The present invention provides an air spring inner support ring installation device, which relates to the field of air spring installation technology. The air spring inner support ring installation tooling equipment includes: a negative pressure module, the negative pressure module is provided with a working chamber, a plurality of air holes and air path interfaces are provided on the cavity wall of the working chamber, and at least one air hole is connected to an external ventilation device through the air path interface; an expansion module, the expansion module at least includes an elastic air bag that can expand and contract in the radial direction, and the outer peripheral surface of the elastic air bag is used to cover the air spring skin; a sealing module, the two sealing modules respectively have an initial position away from the compression module and a sealing position that fits the negative pressure module; a guide device, the guide device includes at least two guide seats, and guide columns are arranged between the guide seats and are respectively connected to the two ends of the guide columns. The application of the technical solution of the present invention can improve the efficiency of the installation of the inner support ring of the air spring, and at the same time, there is no friction damage during the installation process, and the installation accuracy of the inner support ring is higher.

Description

Technical Field

[0001] The invention relates to the technical field of air spring installation, and in particular to an air spring inner support ring installation device. Background Art

[0002] In recent years, air springs have gradually become popular in automobile suspensions. In order to fix the relative position of the outer casing and the bladder in the design of air springs, it has gradually become necessary to put a large-diameter steel ring into a small-diameter bladder as an inner support ring to buckle the outer casing.

[0003] At present, in the process application, there are two methods of forcibly pushing the inner support ring into the inside of the bladder skin, and another method of flipping and folding the bladder skin to move the inner support ring from the outside of the bladder skin to the inside. The first method is very likely to cause bladder skin wear during the pushing and squeezing process, and the second solution has low control accuracy for the position of the inner support ring. At the same time, the production efficiency of both methods is relatively low.

[0004] Currently, no effective solution has been proposed for the above-mentioned technical problems. Summary of the invention

[0005] The main purpose of the present invention is to provide an air spring inner support ring installation device to solve the problems of low installation efficiency, component wear and low installation position accuracy in the prior art.

[0006] In order to achieve the above-mentioned purpose, according to one aspect of the present invention, there is provided an air spring inner support ring installation device, comprising: a negative pressure module, the negative pressure module is provided with a working chamber, a plurality of air holes and a first air path interface are provided on the chamber wall of the working chamber, at least one air hole is connected to an external ventilation device through the first air path interface; an expansion module, the expansion module is arranged in the working chamber, the expansion module at least comprises an elastic air bag that can expand and contract in a radial direction, the outer peripheral surface of the elastic air bag is used for sleeve of the air spring, the elastic air bag expands in the radial direction of the negative pressure module, and can drive the air bag skin to expand in the radial direction to a preset tightened state; a sealing module, there are two sealing modules, and the two sealing modules They are respectively arranged at the two ends of the negative pressure module, and the sealing modules are movably arranged relative to the negative pressure module along the axial direction of the negative pressure module. The two sealing modules respectively have an initial position away from the negative pressure module and a sealing position close to the negative pressure module; wherein, when the bladder skin is in a preset tensioned state, the two sealing modules can move from the initial position to the sealing position, so that at least part of the sealing module extends to between the bladder skin and the elastic airbag to separate the bladder skin from the elastic airbag; when the sealing module is in the sealing position, a sealed space is formed between the sealing module, the bladder skin and the wall of the working chamber, and the sealed space forms a negative pressure space through the first air path interface, the air hole and the external ventilation equipment, so that the bladder skin maintains a preset tensioned state.

[0007] Furthermore, the air spring inner support ring installation device also includes a guide device, which includes: a guide seat, at least two guide seats, a plurality of guide columns are arranged between the two guide seats, the two guide seats are respectively connected to the two ends of the guide column, the guide column is extended along the axial direction of the negative pressure module, and the sealing module is slidably connected to the guide column.

[0008] Furthermore, the negative pressure module is provided with a plurality of axially through-going assembly holes, at least part of the guide columns are passed through the assembly holes, two guide seats are respectively located at the two ends of the negative pressure module, and a sealing module is arranged between each guide seat and the negative pressure module.

[0009] Furthermore, the plurality of pores are arranged in a matrix.

[0010] Furthermore, the diameter of the pores is D1, and the distance between adjacent pores is L, wherein 1 mm ≤ D1 ≤ 3 mm, and L < 10 mm.

[0011] Furthermore, the working cavity includes a large diameter cavity and a small diameter cavity adjacent to each other in the axial direction, the diameter of the large diameter cavity is larger than the diameter of the small diameter cavity, and a step surface for installing an inner support ring is formed at the connection between the large diameter cavity and the small diameter cavity.

[0012] Furthermore, the thickness of the bladder skin is H1, the outer diameter of the inner support ring is D2, the diameter of the large diameter cavity is D3, and the diameter of the small diameter cavity is D4, wherein D4≥D2+2*H1+1, H1+D2 / 2≤D3-D4, and the measurement units of H1, D2, D3, and D4 are all mm.

[0013] Furthermore, the sealing module includes: an annular body, which is provided with a plurality of through holes for the guide column to pass through, and the annular body is slidably arranged along the guide column; an annular boss structure is arranged along the inner circle edge of the annular body, the annular boss structure protrudes from the end of the annular body facing the negative pressure module, and the diameter of the annular boss structure is gradually reduced in the direction away from the annular body; when the bladder skin is in a preset tensioned state and the sealing module moves from the initial position to the sealing position, the annular boss structure extends between the bladder skin and the elastic airbag to separate the bladder skin from the elastic airbag.

[0014] Furthermore, an annular groove is provided on the annular body, and a sealing ring is arranged in the annular groove. When the sealing module is in the sealing position, the sealing ring abuts against the end surface of the negative pressure module.

[0015] Furthermore, the expansion module also includes: an upper plug, which is connected to the first end of the elastic airbag to seal the first end of the elastic airbag; a lower seat, which is connected to the second end of the elastic airbag to seal the second end of the elastic airbag, and a second air path interface is provided on the lower seat, and the internal space of the elastic airbag is connected to the external ventilation equipment through the second air path interface.

[0016] By applying the technical solution of the present invention, when the elastic airbag expands and drives the bag skin to a preset tensioned state, the sealing module can separate the bag skin from the elastic airbag, and at the same time, a sealed space is formed between the sealing module, the bag skin and the wall of the working chamber. The sealed space forms a negative pressure space through the first air path interface, the air hole, and the external ventilation equipment, so that the bag skin maintains a preset tensioned state. At this time, the inner support ring can be pressed into the bag skin, and after the inner support ring is placed in the specified position, the negative pressure is canceled to recycle the bag skin. Compared with the method of forcibly pushing the inner support ring into the bag skin and flipping and folding the bag skin in the prior art, this embodiment can reduce the friction damage to the bag skin, inner support ring and other components during the installation of the inner support ring, and effectively improve the installation efficiency and installation accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] 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:

[0018] Figure 1 It shows a structural schematic diagram of a first embodiment of an air spring inner support ring installation tooling device according to the present invention;

[0019] Figure 2 It shows a structural schematic diagram of a second embodiment of an air spring inner support ring installation tooling device according to the present invention;

[0020] Figure 3 A schematic structural diagram of a first embodiment of a negative pressure module according to the present invention is shown;

[0021] Figure 4 A schematic structural diagram of a second embodiment of a negative pressure module according to the present invention is shown;

[0022] Figure 5 A schematic structural diagram of an embodiment of a guide device according to the present invention is shown;

[0023] Figure 6 A schematic structural diagram of a first embodiment of a sealing module according to the present invention is shown;

[0024] Figure 7 A schematic structural diagram of a second embodiment of a sealing module according to the present invention is shown;

[0025] Figure 8 A schematic structural diagram of a third embodiment of a sealing module according to the present invention is shown;

[0026] Fig. 9 A schematic structural diagram of an embodiment of an expansion die set according to the present invention is shown;

[0027] Fig.10 It shows a structural schematic diagram of a third embodiment of an air spring inner support ring installation tooling device according to the present invention;

[0028] Fig.11 Shows Fig.10 An enlarged schematic diagram of part A in FIG.

[0029] Fig.12 It shows a structural schematic diagram of a fourth embodiment of an air spring inner support ring installation tooling device according to the present invention;

[0030] Fig.13 Shows Fig.12 An enlarged schematic diagram of part B in FIG.

[0031] The above drawings include the following reference numerals:

[0032] 1. Negative pressure module; 2. Expansion module; 3. Sealing module; 4. Guide device; 5. Bladder skin; 6. Fastening screws; 7. Inner support ring;

[0033] 10. working chamber; 100. air hole; 101. first air path interface; 102. assembly hole; 11. large diameter chamber; 12. small diameter chamber;

[0034] 21. elastic airbag; 22. upper plug; 23. lower seat; 230. second air path interface;

[0035] 31. annular body; 32. annular boss structure; 33. sealing ring; 34. driving motor;

[0036] 41. Guide seat; 42. Guide column. DETAILED DESCRIPTION

[0037] 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.

[0038] 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.

[0039] 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 terms used in this way can be interchangeable 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, for example. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0040] Now, exemplary embodiments according to the present application will be described in more detail with reference to the accompanying drawings. However, these exemplary embodiments may be implemented in a variety of different forms and should not be construed as being limited to the embodiments described herein. It should be understood that these embodiments are provided to make the disclosure of the present application thorough and complete, and to fully convey the concepts of these exemplary embodiments to those of ordinary skill in the art. In the accompanying drawings, for the sake of clarity, the thickness of the layers and regions may be enlarged, and the same reference numerals are used to represent the same devices, and thus their descriptions will be omitted.

[0041] Combination Figures 1 to 13 As shown, according to a specific embodiment of the present application, an air spring inner support ring installation tooling device is provided.

[0042] The air spring inner support ring installation tooling equipment includes a negative pressure module 1, an expansion module 2 and a sealing module 3. The negative pressure module 1 is provided with a working chamber 10. The cavity wall of the working chamber 10 is provided with multiple air holes 100 and a first air path interface 101. At least one air hole 100 is connected to an external ventilation device through the first air path interface 101. The expansion module 2 is arranged in the working chamber 10. The expansion module 2 at least includes an elastic air bag 21 that can expand and contract in a radial direction. The outer peripheral surface of the elastic air bag 21 is used to cover the air spring skin 5. The elastic air bag 21 expands in the radial direction of the negative pressure module 1, and can drive the skin 5 to expand in the radial direction to a preset tightened state. There are two sealing modules 3, and the two sealing modules 3 are respectively arranged in the negative pressure module 1, the sealing modules 3 are movably arranged relative to the negative pressure module 1 along the axial direction of the negative pressure module 1, and the two sealing modules 3 respectively have an initial position away from the negative pressure module 1 and a sealing position close to the negative pressure module 1; wherein, when the bladder skin 5 is in a preset tensioned state, the two sealing modules 3 can move from the initial position to the sealing position, so that at least part of the sealing modules 3 extends to between the bladder skin 5 and the elastic airbag 21 to separate the bladder skin 5 from the elastic airbag 21; when the sealing module 3 is in the sealing position, a sealed space is formed between the sealing module 3, the bladder skin 5 and the cavity wall of the working cavity 10, and the sealed space forms a negative pressure space through the first air path interface 101, the air hole 100, and the external ventilation device, so that the bladder skin 5 maintains a preset tensioned state.

[0043] By applying the technical solution of this embodiment, when the elastic airbag 21 expands and drives the bag skin 5 to be in a preset tensioned state, the sealing module 3 can separate the bag skin 5 from the elastic airbag 21, and at the same time, a sealed space is formed between the sealing module 3, the bag skin 5 and the cavity wall of the working chamber 10. The sealed space forms a negative pressure space through the first air path interface 101, the air hole 100, and the external ventilation equipment, so that the bag skin 5 maintains a preset tensioned state. At this time, the inner support ring 7 can be pressed into the bag skin 5, and after the inner support ring 7 is placed in the specified position, the negative pressure is canceled to recycle the bag skin 5. Compared with the prior art of forcibly pushing the inner support ring 7 into the interior of the bag skin 5 and flipping and folding the bag skin 5, this embodiment can reduce the friction damage to the bag skin 5, the inner support ring 7 and other components during the installation of the inner support ring 7, and effectively improve the installation efficiency and installation accuracy.

[0044] The air spring inner support ring installation tooling equipment further includes a guide device 4, which includes at least two guide seats 41, and a plurality of guide columns 42 are arranged between the two guide seats 41. The two guide seats 41 are respectively connected to the two ends of the guide column 42, and the guide column 42 is extended along the axial direction of the negative pressure module 1. The guide column 42 is slidably connected to the sealing module 3. The setting of the guide device 4 can ensure the coaxiality relationship between the sealing module 3 and the negative pressure module 1 and the expansion module 2 during the axial movement.

[0045] In an exemplary embodiment of the present application, the guide seat 41 is a circular ring structure, and a plurality of guide posts 42 are arranged at intervals along the circumference of the guide seat 41 .

[0046] In an exemplary embodiment of the present application, the relative position of the negative pressure module 1 and the guide device 4 can be adjusted by adjusting the fastening screws 6 on the negative pressure module 1, so as to more flexibly cope with the solutions of the inner support ring 7 in different positions.

[0047] Specifically, the negative pressure module 1 is provided with a plurality of axially penetrating assembly holes 102, at least part of the guide pillars 42 are arranged in the assembly holes 102, two guide seats 41 are respectively located at both ends of the negative pressure module 1, and a sealing module 3 is arranged between each guide seat 41 and the negative pressure module 1. Such an arrangement can ensure the axial relationship between the sealing modules 3 at both ends and the negative pressure module 1.

[0048] Furthermore, the air holes 100 on the negative pressure module 1 are arranged in a matrix. When the negative pressure module 1 is working, negative pressure is formed through the internal matrix air path, and the expanded bladder skin 5 is adsorbed on the inner cavity. This arrangement can flexibly and flexibly absorb and release gas to form negative pressure.

[0049] Specifically, to ensure an ideal negative pressure effect, it is necessary to ensure that the distance L between adjacent pores 100 is less than 10 mm, and the diameter D1 of the pore 100 is between 1 and 3 mm, that is, L<10 mm, 1 mm≤D1≤3 mm.

[0050] Specifically, the working chamber 10 of the negative pressure module 1 includes a large diameter chamber 11 and a small diameter chamber 12 adjacent to each other in the axial direction, the diameter of the large diameter chamber 11 is larger than the diameter of the small diameter chamber 12, and a step surface for installing the inner support ring 7 is formed at the connection between the large diameter chamber 11 and the small diameter chamber 12. To ensure effective positioning of the step surface, the inner diameter of the step surface should be 1 mm larger than the sum of the outer diameter of the inner support ring 7 and twice the thickness of the bladder skin 5. The thickness of the bladder skin 5 is H1, the outer diameter of the inner support ring 7 is D2, the diameter of the large diameter chamber 11 is D3, and the diameter of the small diameter chamber 12 is D4, which is expressed as D4≥D2+2*H1+1, H1+D2 / 2≤D3-D4, where the measurement units of H1, D2, D3, and D4 are all mm.

[0051] Furthermore, the sealing module 3 includes an annular body 31 having a plurality of through holes for the guide column 42 to pass through, and the annular body 31 is slidably arranged along the guide column 42; an annular boss structure 32 is arranged on the inner circular edge of the annular body 31, and the annular boss structure 32 is arranged to protrude from one end of the annular body 31 facing the negative pressure module 1, and the diameter of the annular boss structure 32 is gradually reduced in the direction away from the annular body 31; when the bladder skin 5 is in a preset tensioned state and the sealing module 3 moves from the initial position to the sealing position, the annular boss structure 32 extends along the axial movement to between the bladder skin 5 and the elastic airbag 21, separating the bladder skin 5 from the elastic airbag 21.

[0052] In an exemplary embodiment of the present application, the sealing module 3 further includes a driving motor 34, and the output shaft of the driving motor 34 is transmitted to the annular body 31 through a transmission component, and the transmission component can be a structure such as a gear rack, a worm gear, etc.

[0053] Furthermore, an annular groove with a sealing ring 33 is provided on the annular body 31. When the sealing module 3 is in the sealing position, the sealing ring 33 abuts against the end surface of the negative pressure module 1. The sealing ring 33 can seal the sealed space formed by the annular body 31, the negative pressure module 1 and the bladder skin 5, ensuring that the negative pressure module 1 can adsorb the bladder skin 5.

[0054] Furthermore, the expansion module 2 includes an upper plug 22 and a lower seat 23. The upper plug 22 is connected to the first end of the elastic airbag 21 to block the first end of the elastic airbag 21; the lower seat 23 is connected to the second end of the elastic airbag 21 to block the second end of the elastic airbag 21. The lower seat 23 is provided with a second air path interface 230. The internal space of the elastic airbag 21 is connected to the external ventilation device through the second air path interface 230. The elastic airbag 21 is expanded by filling gas into the elastic airbag 21, and then the bag skin 5 is propped up to be attached to the working chamber 10 of the negative pressure module 1.

[0055] The present application also provides a preferred embodiment of an air spring inner support ring installation tooling equipment.

[0056] Specifically, the air spring inner support ring installation tooling equipment includes a negative pressure module 1, an expansion module 2, a guide device 4 and two sealing modules 3, wherein the expansion module 2 includes an elastic airbag 21, an upper plug 22 and a lower seat 23, the elastic airbag 21, the upper plug 22 and the lower seat 23 constitute a sealed cavity, and a second air path interface 230 is provided on the lower seat 23 to connect with the external air pipe. The elastic airbag 21 is expanded by filling gas into the sealed cavity, and then the bag skin 5 is propped up, so that the bag skin 5 is attached to the inner cavity of the negative pressure module 1.

[0057] The negative pressure module 1 forms negative pressure through the internal matrix pores 100, and adsorbs the expanded bladder skin 5 on the inner cavity. The inner cavity of the negative pressure module 1 is designed with a step surface structure, which can position the inner support ring 7. To ensure the formation of an ideal negative pressure effect, the interval between the pores 100 should be less than 10mm, and the diameter of the pores 100 should be 1-3mm. To ensure the effective positioning of the step surface, the inner diameter of the step surface is controlled to be 1mm larger than the sum of the outer diameter of the inner support ring 7 and twice the thickness of the bladder skin 5, and the step thickness is controlled between the thickness of the bladder skin 5 and 1 / 2 of the thickness of the inner support ring 7.

[0058] The guide device 4 can ensure the coaxiality between the sealing modules 3 at both ends and the negative pressure module 1 and the expansion module 2 during the axial movement. At the same time, the relative position of the negative pressure module 1 and the guide device 4 can be adjusted by loosening the fastening screws 6 on the negative pressure module 1, so as to more flexibly cope with the inner support ring solutions in different positions.

[0059] The two sealing modules 3 are symmetrically arranged, and the sealing modules 3 are composed of a driving motor 34, an annular body 31 and a sealing ring 33. The driving motor 34 is connected to the annular body 31, and drives the annular body 31 to make axial movement along the guide device 4. The inner ring edge of the annular body 31 has an annular boss structure 32, and the annular boss structure 32 is a wedge-shaped boss. The wedge-shaped boss is used to separate the elastic airbag 21 and the bladder skin 5 on the fitted expansion module 2, and the axial movement of the wedge is inserted into the fitting gap between the elastic airbag 21 and the bladder skin 5, thereby achieving separation. The sealing ring 33 is used to achieve sealing between the negative pressure module 1 and the sealing module 3, so that a closed cavity is formed between the negative pressure module 1 and the bladder skin 5.

[0060] The operating procedures of the air spring inner support ring installation tooling equipment in this embodiment are as follows: bladder skin 5 is placed - expansion module 2 is expanded - sealing module 3 is cut in - negative pressure module 1 is negatively pressurized - expansion module 2 is deflated and withdrawn - inner support ring 7 is placed - sealing module 3 is cut out and negative pressure module 1 is depressurized.

[0061] The specific operation steps are as follows: first, place the bladder skin 5 on the outside of the expansion module 2, and keep a specific relative position relationship between the bladder skin 5 and the expansion module 2; by filling the expansion module 2 with high-pressure gas, the elastic airbag 21 in the expansion module 2 is deformed and expands with the bladder skin 5. Fig.10 and Fig.11As shown, the sealing modules 3 at both ends move axially toward the negative pressure module 1 under the action of the driving motor 34, and the wedge openings on the edge of the annular body 31 are inserted into the gap between the bladder skin 5 and the elastic airbag 21 through the sharp corners, thereby realizing the separation of the bladder skin 5 and the elastic airbag 21. At the same time, the sealing ring 33 of the sealing module 3 contacts the negative pressure module 1 to form a sealed environment composed of two sealing modules 3, the negative pressure module 1 and the bladder skin 5. At this time, the negative pressure module 1 starts to inhale, forming negative pressure, and the expansion module 2 is deflated. Fig.12 and Fig.13 As shown, the elastic airbag 21 returns to its size before inflation, the bladder skin 5 and the elastic airbag 21 are completely separated, and the inflation module 2 is withdrawn. At this time, the bladder skin 5 can continue to maintain its expansion state by relying on the negative pressure on the negative pressure module 1, and the inner support ring 7 is placed, and the inner support ring 7 will fall on the step surface of the inner cavity of the negative pressure module 1. After placement, the sealing module 3 is cut out and the negative pressure module 1 is depressurized, the bladder skin 5 returns to its state before inflation, and the inner support ring 7 is placed in the designated position inside the bladder skin 5. It should be noted that the withdrawal of the inflation module 2 can be after the inner support ring 7 is placed.

[0062] The use of the air spring inner support ring installation tooling equipment in the above embodiment can realize the placement of a large-diameter (the outer diameter of the inner support ring 7 is much larger than the inner diameter of the bladder skin 5) inner support ring 7, effectively improving the installation efficiency, eliminating component wear during the installation process, and achieving higher installation position accuracy.

[0063] The technical solution of the present embodiment adopts the above-mentioned expansion module, negative pressure module, guide device, sealing module combination and corresponding process steps, thereby eliminating the traditional method of forcibly pushing the inner support ring into the interior of the bladder skin and flipping and folding the bladder skin, thereby improving the efficiency of installing the inner support ring of the air spring. At the same time, there is no friction damage during the installation process, and the position of the inner support ring can be installed with high precision.

[0064] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0065] In addition to the above, it should be noted that "one embodiment", "another embodiment", "embodiment", etc. mentioned in this specification refer to the specific features, structures or characteristics described in conjunction with the embodiment included in at least one embodiment generally described in this application. The same expression appearing in multiple places in the specification does not necessarily refer to the same embodiment. Further, when describing a specific feature, structure or characteristic in conjunction with any embodiment, it is claimed that the realization of such feature, structure or characteristic in conjunction with other embodiments also falls within the scope of the present invention.

[0066] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0067] 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 inner support ring installation device, characterized in that: include: A negative pressure module (1), the negative pressure module (1) being provided with a working chamber (10), a plurality of air holes (100) and a first air path interface (101) being provided on a chamber wall of the working chamber (10), at least one of the air holes (100) being connected to an external ventilation device via the first air path interface (101); An expansion module (2), the expansion module (2) being arranged in the working chamber (10), the expansion module (2) comprising at least an elastic airbag (21) capable of expanding and contracting in a radial direction, the outer peripheral surface of the elastic airbag (21) being used for sleeve-mounting a bag skin (5) of an air spring, the elastic airbag (21) expanding in a radial direction of the negative pressure module (1), and being capable of driving the bag skin (5) to expand in a radial direction to a preset tensioned state; A sealing module (3), wherein there are two sealing modules (3), the two sealing modules (3) are respectively arranged at two ends of the negative pressure module (1), the sealing module (3) is movably arranged relative to the negative pressure module (1) along the axial direction of the negative pressure module (1), and the two sealing modules (3) respectively have an initial position away from the negative pressure module (1) and a sealing position in contact with the negative pressure module (1); Wherein, when the bladder skin (5) is in the preset tensioned state, the two sealing modules (3) can move from the initial position to the sealing position, so that at least part of the sealing module (3) extends between the bladder skin (5) and the elastic airbag (21), so as to separate the bladder skin (5) from the elastic airbag (21); When the sealing module (3) is in the sealing position, a sealed space is formed between the sealing module (3), the bladder skin (5) and the cavity wall of the working cavity (10), and the sealed space forms a negative pressure space through the first air path interface (101), the air hole (100) and the external ventilation equipment, so that the bladder skin (5) maintains the preset tension state.

2. The air spring inner support ring installation device according to claim 1, characterized in that: The air spring inner support ring installation device further comprises a guide device (4), wherein the guide device (4) comprises: A guide seat (41), wherein there are at least two guide seats (41), a plurality of guide columns (42) are arranged between the two guide seats (41), the two guide seats (41) are respectively connected to two ends of the guide columns (42), the guide columns (42) are extended along the axial direction of the negative pressure module (1), and the sealing module (3) is slidably connected to the guide columns (42).

3. The air spring inner support ring installation device according to claim 2, characterized in that: The negative pressure module (1) is provided with a plurality of axially through-going assembly holes (102), at least part of the guide columns (42) are inserted into the assembly holes (102), the two guide seats (41) are respectively located at two ends of the negative pressure module (1), and a sealing module (3) is arranged between each guide seat (41) and the negative pressure module (1).

4. The air spring inner support ring installation device according to claim 1, characterized in that: The plurality of air holes (100) are arranged in a matrix.

5. The air spring inner support ring installation device according to claim 1, characterized in that: The diameter of the pores (100) is D1, and the distance between adjacent pores (100) is L, wherein 1 mm≤D1≤3 mm, and L<10 mm.

6. The air spring inner support ring installation device according to claim 1, characterized in that: The working chamber (10) comprises a large-diameter chamber (11) and a small-diameter chamber (12) adjacent to each other in the axial direction, the diameter of the large-diameter chamber (11) being larger than the diameter of the small-diameter chamber (12), and a step surface for mounting an inner support ring (7) is formed at the connection between the large-diameter chamber (11) and the small-diameter chamber (12).

7. The air spring inner support ring installation device according to claim 2, characterized in that: The sealing module (3) comprises: an annular body (31), the annular body (31) being provided with a plurality of through holes for the guide pillar (42) to pass through, the annular body (31) being slidably arranged along the guide pillar (42); An annular boss structure (32) is arranged along the inner circular edge of the annular body (31), the annular boss structure (32) protruding from one end of the annular body (31) facing the negative pressure module (1), and the diameter of the annular boss structure (32) is arranged to gradually decrease in a direction away from the annular body (31); When the bladder skin (5) is in the preset tensioned state and the sealing module (3) moves from the initial position to the sealing position, the annular boss structure (32) extends between the bladder skin (5) and the elastic airbag (21) to separate the bladder skin (5) from the elastic airbag (21).

8. The air spring inner support ring installation device according to claim 7, characterized in that: The annular body (31) is also provided with an annular groove, in which a sealing ring (33) is arranged. When the sealing module (3) is in the sealing position, the sealing ring (33) abuts against the end surface of the negative pressure module (1).

9. The air spring inner support ring installation device according to claim 1, characterized in that: The expansion module (2) further comprises: an upper plug (22), the upper plug (22) being connected to the first end of the elastic airbag (21) so as to block the first end of the elastic airbag (21); A lower seat (23), the lower seat (23) being connected to the second end of the elastic airbag (21) to block the second end of the elastic airbag (21), a second air path interface (230) being provided on the lower seat (23), and the internal space of the elastic airbag (21) being connected to the external ventilation device via the second air path interface (230).

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