CN220592992U - Air spring bag skin turns over and rolls up device - Google Patents

Abstract

The utility model provides an air spring bag skin rolling device which comprises a rack, a worm gear lifter at the bottom of the rack, an upper steel plate at the upper end of the rack, a front air spring upper end sealing piece, a front air spring lower end sealing piece, a rear air spring upper end fixing piece, a rear air spring lower end fixing piece and a pressure maintaining valve for carrying out inflation pressure maintaining before rolling, wherein the front air spring upper end sealing piece or the rear air spring upper end fixing piece is fixed at the center of the upper steel plate, and the front air spring lower end sealing piece or the rear air spring lower end fixing piece is fixed at the upper end of a worm of the worm gear lifter; the device reduces the time for rolling the capsule skin when the air spring is replaced, and improves the working efficiency; the uniform rolling of the upper and lower coaxial centering and the capsule skin is ensured in the rolling process; the bag skin of the air spring is rolled to a specified height for later installation; the torsion force generated in the process of turning over the air spring bag skin is eliminated, and the safety in the process of turning over is ensured.

Description

Air spring bag skin turns over and rolls up device

Technical Field

The utility model belongs to the field of replacement auxiliary tools for automobile parts, and relates to an air spring bag cover overturning device.

Background

Frequent chassis parts are required in the automobile chassis adjustment process, various adjustment schemes are verified, accessories to be replaced comprise a shock absorber, an air spring and the like, wherein the air spring is often replaced by a cutting block when being replaced, so that the rigidity of the spring is changed. The replacement of the truncated block requires:

1) The automobile maintenance experience of operators is rich;

2) And has a certain working experience for the special operation of the project.

No and can result in:

1) Changing the duration of the operation;

2) The failure of the operation leads to uneven rolling of the capsule skin, and the failure and even damage of the capsule skin;

3) The skin turns over and twists easily to lead to the circumstances such as security risk production personnel injury.

The method adopted in the prior art for solving the problems generally comprises the following steps:

1) Making an operator capacity culture plan and guiding beside the operator;

2) Operation normalization and security scheme formulation and inspection.

The method has the problems of strong dependence on personnel capability and capability of solving the problems of replacement failure and replacement safety, but has no obvious improvement on replacement efficiency and replacement operation easiness. And limited by the first requirement of safety, the research and development project of the product is overlong when being replaced in the test process, and needs to wait until experienced personnel operate, so that the test period can not be compressed, and the research and development labor cost and economic cost can not be optimized and even the cost is improved.

Disclosure of Invention

The utility model provides an air spring bag cover rolling device for overcoming the problems in the prior art.

The utility model is realized by adopting the following technical scheme:

the air spring bag cover overturning device is used for overturning the bag cover of the front air spring and the bag cover of the rear air spring when the air springs are replaced in the process of adjusting the automobile chassis;

the upper end face of the front air spring is provided with a circular boss at the upper end of the front air spring, the circular boss at the upper end of the front air spring is provided with a central hole at the upper end of the front air spring, which is coaxially arranged and used for being matched and sealed with a sealing element at the upper end of a piston rod of the shock absorber, four connecting bolts for a front air spring upper cover connected with a vehicle body are uniformly distributed at intervals on the periphery of the circular boss at the upper end of the front air spring, the lower end of the front air spring is provided with a central hole at the lower end of the front air spring, which is coaxially arranged and used for being matched and sealed with the bottom of the shock absorber, the central hole at the lower end of the front air spring is a two-section stepped hole with the upper aperture smaller than the lower aperture, and one side of the upper part of the front air spring is provided with a front air spring inflation port which is vertically and downwards arranged and is used for inflating a capsule of the front air spring;

The upper end of the rear air spring is provided with a rear air spring upper end annular boss which is coaxially arranged and used for being matched with a fixed position on the automobile body, the side surface of the rear air spring upper end annular boss is provided with a rear air spring inflation port which is horizontally arranged and is used for inflating the bag skin of the rear air spring, the lower end of the rear air spring is provided with a rear air spring lower end annular boss which is coaxially arranged and matched with a rear control arm of the automobile body, and the outer surface of the rear air spring lower end annular boss is outwards extended with a column-shaped rear air spring lower end bulge which is vertically arranged and matched with a positioning groove on the rear control arm of the automobile body for positioning;

the device comprises a bench of a rectangular frame structure, a worm gear lifter fixedly arranged at the bottom of the bench, a rectangular plate-shaped upper steel plate horizontally fixedly arranged at the upper end of the bench, a front air spring upper end sealing member of a revolving body structure for connecting and sealing a front air spring upper end central hole, a front air spring lower end sealing member of the revolving body structure for connecting and sealing a front air spring lower end central hole, a rear air spring upper end fixing member of the revolving body structure for connecting and fixing a rear air spring upper end annular boss, a rear air spring lower end fixing member of the revolving body structure for connecting and fixing a rear air spring lower end annular boss, and a pressure maintaining valve communicated with a front air spring inflation port of the front air spring or a rear air spring inflation pressure maintaining port of the rear air spring, wherein a hand wheel of the revolving body structure for conducting inflation pressure maintaining before rolling is enabled to move up and down along the axis of the vertical direction;

When the front air spring bag cover is turned, the center of the upper surface of the front air spring upper end sealing piece is fixed on the lower surface of the upper steel plate through a bolt and an upper steel plate center through hole, the upper surface of the front air spring upper end sealing piece is inserted into a circular groove of the upper steel plate, the lower surface of the front air spring lower end sealing piece is in threaded connection with the upper end of a worm of the worm gear and worm lifter, so that the axis of the front air spring upper end sealing piece, the axis of the front air spring lower end sealing piece and the axis of the worm gear and worm lifter are on the same vertical axis, and the pressure maintaining valve is communicated with a front air spring inflation port and an external air source;

when the rear air spring bag skin is turned over, the upper surface of the rear air spring upper end fixing piece is fixed on the lower surface of the upper steel plate through a bolt and an upper steel plate center through hole, the upper surface of the rear air spring upper end fixing piece is inserted into a circular groove of the upper steel plate, and the lower surface of the rear air spring lower end fixing piece is in threaded connection with the upper end of a worm of the worm gear and worm lifter, so that the axis of the rear air spring upper end fixing piece, the axis of the rear air spring lower end fixing piece and the axis of the worm gear and worm lifter are on the same vertical axis, and the pressure maintaining valve is communicated with a rear air spring inflation inlet and an external air source.

The further technical scheme comprises the following steps:

the front air spring upper end sealing member is a cylindrical revolving body with a closed top and an open bottom, a ring-shaped front air spring upper end sealing member flange which extends outwards is arranged at the lower end of the cylindrical part of the front air spring upper end sealing member, four front air spring upper end sealing member flange through holes for the corresponding front air spring upper cover connecting bolts to pass through are uniformly distributed on the front air spring upper end sealing member flange at intervals, a connecting column which extends downwards and exceeds the front air spring upper end sealing member flange and is coaxially arranged in the front air spring upper end sealing member, a sealing column which extends downwards and is used for being inserted into the front air spring upper end central hole is coaxially arranged at the lower end of the connecting column, a front air spring upper end sealing member inner threaded hole with inner threads is coaxially arranged at the center of the upper surface of the cylindrical part of the front air spring upper end sealing member, the front air spring upper end sealing member and the upper steel plate are fixedly connected through the front air spring upper end sealing member inner threaded hole, the bolts and the upper steel plate central through the upper steel plate through holes, and the upper surface of the cylindrical part of the front air spring upper end sealing member is inserted into the groove of the upper steel plate.

An annular groove is arranged between the lower end of the connecting column and the root of the sealing column, and a front air spring upper sealing ring used for enhancing the sealing between the sealing column and the front air spring upper end central hole is arranged in the annular groove.

The cylindrical part of the upper end sealing piece of the front air spring is provided with a plurality of hollow parts of the upper end sealing piece of the front air spring which are uniformly arranged at intervals so as to lighten the weight of the upper end sealing piece of the front air spring.

The diameter of the three-section shaft neck of the front air spring lower end sealing member is sequentially reduced from bottom to top, the three-section shaft neck of the front air spring lower end sealing member is sequentially provided with a third section shaft neck, a second section shaft neck and a first section shaft neck from bottom to top, wherein the first section shaft neck of the front air spring lower end sealing member is inserted into the small-bore section of the front air spring lower end central hole, the second section shaft neck of the front air spring lower end sealing member is inserted into the large-bore section of the front air spring lower end central hole, a front air spring lower sealing ring for increasing the sealing between the first section shaft neck and the second section shaft neck of the front air spring lower end sealing member is sleeved on a shoulder between the first section shaft neck and the second section shaft neck of the front air spring lower end sealing member, the center of the lower surface of the front air spring lower end sealing member is coaxially provided with a front air spring lower end sealing member inner threaded hole with internal threads, and the upper end of a worm screw of the worm and the worm is coaxially connected with the upper end of the worm and fixed on the worm of the worm and worm.

The upper end fixing piece of the rear air spring is a cylindrical revolving body with a closed top and an open bottom, a ring-shaped upper end fixing piece flange of the rear air spring is arranged at the lower end of the cylindrical part of the upper end fixing piece of the rear air spring, a semicircular notch for accommodating a charging port of the rear air spring is arranged on the upper end fixing piece flange of the rear air spring, a circular groove which is concave upwards and used for accommodating a circular boss of the upper end of the rear air spring is coaxially arranged on the lower surface of the flange of the upper end fixing piece of the rear air spring, an internal threaded hole of the upper end fixing piece of the rear air spring with internal threads is coaxially arranged at the center of the upper surface of the cylindrical part of the upper end fixing piece of the rear air spring, the internal threaded hole of the upper end fixing piece of the rear air spring, a bolt and an upper steel plate central through hole are fixedly connected with the upper steel plate, and the upper surface of the cylindrical part of the upper end fixing piece of the rear air spring is inserted into the circular groove of the upper steel plate.

The cylindrical part of the upper end fixing piece of the rear air spring is provided with a plurality of hollow parts of the upper end fixing piece of the rear air spring which are uniformly arranged at intervals, so that the weight of the upper end fixing piece of the rear air spring is reduced.

The diameter of the three-section shaft neck of the rear air spring lower end fixing piece is sequentially increased from bottom to top, the three-section shaft neck of the rear air spring lower end fixing piece sequentially comprises a third section shaft neck, a second section shaft neck and a first section shaft neck from bottom to top, wherein the first section shaft neck and the second section shaft neck of the rear air spring lower end fixing piece are provided with a rear air spring lower end annular boss fixing hole for inserting a rear air spring lower end annular boss, one side of the rear air spring lower end annular boss fixing hole is provided with a rear air spring lower end protruding groove which extends outwards and is used for accommodating the rear air spring lower end protrusion, the second section shaft neck and the third section shaft neck of the rear air spring lower end fixing piece are internally threaded holes with internal threads, and the internal threaded holes of the rear air spring lower end fixing piece are connected with external threads of the upper end of the worm of the turbine worm, so that the rear air spring lower end fixing piece is coaxially fixed at the upper end of the worm of the turbine worm.

The upper steel plate and the sealing element at the upper end of the front air spring or the sealing element at the upper end of the upper steel plate and the fixing element at the upper end of the rear air spring are provided with a circular heightening cushion block, the upper surface of the heightening cushion block is provided with a heightening cushion block internal threaded hole with internal threads, the external diameter of the heightening cushion block is identical to the internal diameter of a circular groove on the lower surface of the upper steel plate, the heightening cushion block is fixed on the lower surface of the upper steel plate through the heightening cushion block internal threaded hole, the bolt and the central through hole of the upper steel plate, the upper surface of the heightening cushion block is inserted into the circular groove of the upper steel plate, the lower surface of the heightening cushion block is provided with a cylindrical heightening cushion block connecting column which is coaxially arranged and is downwards protruded, and the outer surface of the heightening cushion block connecting column is provided with an heightening cushion block connecting column external thread which is in threaded connection with the internal threaded hole of the sealing element at the upper end of the front air spring or in threaded connection with the internal threaded hole of the fixing element at the upper end of the rear air spring.

The rack comprises four vertical steel pipes which are distributed along four corner points of the rectangle and are vertically arranged, four right-angle openings for accommodating the vertical steel pipes are formed in the four corner points of the upper steel plate, the four vertical steel pipes are welded and fixed with the four right-angle openings of the upper steel plate, the lower ends of two adjacent vertical steel pipes are welded and fixed through a horizontal steel pipe which is horizontally arranged, and a rectangular plate-shaped lower steel plate is welded and fixed on the two horizontal steel pipes which are positioned in front and behind and used for fixing a worm gear lifter.

Compared with the prior art, the utility model has the beneficial effects that:

the air spring bag cover turning device provided by the utility model effectively solves the problem of long air spring replacement time, the time for replacing the primary air spring is reduced from 15 minutes for turning the primary bag cover to 3 minutes for turning the primary bag cover, and the working efficiency is greatly improved.

The air spring bag cover overturning device provided by the utility model ensures the upper and lower coaxial centering in the process of overturning the air spring bag cover; the uniform rolling of the capsule skin of the air spring is ensured; the bag skin of the air spring is rolled to a specified height for the installation of the next step; the torsion force generated in the process of turning the air spring bag skin is eliminated, and the safety in the process of turning is ensured.

Drawings

The utility model is further described below with reference to the accompanying drawings:

fig. 1 is a front view of a front air spring for rolling an air spring bag cover rolling device provided by the utility model.

Fig. 2 is a schematic structural diagram of an upper end face of a front air spring for rolling an air spring bag cover rolling device provided by the utility model.

Fig. 3 is a schematic structural view of a central hole at the lower end of a front air spring of the front air spring for rolling an air spring bag cover rolling device.

Fig. 4 is a front view of a rear air spring for rolling an air spring bladder rolling device provided by the utility model.

Fig. 5 is a schematic structural diagram of a lower end of a rear air spring for rolling by using the air spring bag cover rolling device provided by the utility model.

Fig. 6 is a schematic structural view of a rack, a worm gear and worm lifter and an upper steel plate of the air spring bag cover rolling device provided by the utility model.

Fig. 7 is an isometric view of a front air spring upper end seal in accordance with the present utility model.

Fig. 8 is a longitudinal cross-sectional view of the front air spring upper end seal of the present utility model.

Fig. 9 is an isometric view of a front air spring lower end seal in accordance with the present utility model.

Fig. 10 is a longitudinal cross-sectional view of the front air spring lower end seal of the present utility model.

Fig. 11 is an isometric view of a rear air spring lower end mount in accordance with the present utility model.

Fig. 12 is a longitudinal cross-sectional view of the rear air spring lower end mount of the present utility model.

Fig. 13 is an isometric view of a rear air spring upper end mount in the present utility model.

Fig. 14 is a longitudinal cross-sectional view of the rear air spring upper end anchor of the present utility model.

FIG. 15 is an isometric view of a booster block of the present utility model.

FIG. 16 is a longitudinal cross-sectional view of a booster block of the present utility model.

Fig. 17 is a schematic view of a pressure maintaining valve in the present utility model.

Fig. 18 is a bottom view of the upper steel plate of the present utility model.

Fig. 19 is a longitudinal sectional view of an upper steel sheet in the present utility model.

Fig. 20 is an isometric view of a structure of an air spring cover rolling device for rolling a cover of a front air spring according to the present utility model.

Fig. 21 is a front view of a structure of an air spring cover rolling device for rolling a cover of a front air spring according to the present utility model.

Fig. 22 is an isometric view of a structure of the air spring cover rolling device for rolling the cover of the air spring according to the present utility model.

Fig. 23 is a front view of a structure of the air spring cover rolling device for rolling the cover of the air spring according to the present utility model.

In the figure: 1. front air spring, 2. Front air spring upper circular boss, 3. Front air spring charging hole, 4. Front air spring upper cover connecting bolt, 5. Front air spring upper end central hole, 6. Front air spring lower end central hole, 7. Rear air spring, 8. Rear air spring upper end circular boss, 9. Rear air spring lower end circular boss, 10. Rear air spring charging hole, 11. Rear air spring lower end boss, 12. Rack, 13. Turbine worm lifter, 14. Upper steel plate, 15. Front air spring upper end sealing member, 16. Front air spring lower end sealing member, 17. Rear air spring upper end fixing member, 18. Rear air spring lower end fixing member, 19. Upper steel plate central through hole, 20. Front air spring upper end sealing member flange, 21. Front air spring upper end sealing member flange through hole, 22. Connecting column, the sealing device comprises a sealing post, a 24 annular groove, a 25 front air spring upper end sealing piece hollow part, a 26 front air spring upper end sealing piece internal threaded hole, a 27 rear air spring upper end fixing piece flange, a 28 semicircular notch, a 29 rear air spring upper end fixing piece hollow part, a 30 rear air spring lower end annular boss fixing hole, a 31 rear air spring lower end protruding groove, a 32 rear air spring lower end fixing piece internal threaded hole, a 33 rear air spring upper end fixing piece internal threaded hole, a 34 heightening cushion block, a 35 heightening cushion block internal threaded hole, a 36 heightening cushion block connecting post, a 37 heightening cushion block connecting post external threads, a 38 circular groove, a 39 front air spring lower end sealing piece internal threaded hole, a 40 vertical square steel pipe, a 41 right angle steel pipe notch, a 42 horizontal square steel pipe, a 43 lower steel plate, a 44 pressure maintaining valve and a 45 circular groove.

Detailed Description

The utility model is described in detail below with reference to the attached drawing figures:

the utility model provides an air spring bag cover turning device which is used for turning the bag cover of a front air spring 1 and the bag cover of a rear air spring 7 when the air springs are replaced in the process of adjusting the automobile chassis;

as shown in fig. 1, 2 and 3, a circular front air spring upper end circular boss 2 coaxially arranged is arranged on the upper end face of a front air spring 1, a front air spring upper end central hole 5 coaxially arranged and used for being matched and sealed with a sealing element at the upper end of a piston rod of a shock absorber is arranged on the front air spring upper end circular boss 2, four front air spring upper cover connecting bolts 4 used for being connected with a vehicle body are uniformly distributed on the upper end face of the front air spring 1 at intervals around the front air spring upper end circular boss 2, a front air spring lower end central hole 6 coaxially arranged and used for being matched and sealed with the bottom of the shock absorber is arranged at the lower end of the front air spring 1, the front air spring lower end central hole 6 is a two-section stepped hole with the upper aperture smaller than the lower aperture, and a front air spring inflating port 3 vertically and downwards arranged at one side of the upper part of the front air spring 1 and used for inflating a bag cover of the front air spring 1;

As shown in fig. 4 and 5, the upper end of the rear air spring 7 is provided with a rear air spring upper end annular boss 8 which is coaxially arranged and used for being matched and installed with a fixed position on the vehicle body, the side surface of the rear air spring upper end annular boss 8 is provided with a rear air spring inflation port 10 which is horizontally arranged and is used for inflating the capsule skin of the rear air spring 7, the lower end of the rear air spring 7 is provided with a rear air spring lower end annular boss 9 which is coaxially arranged and used for being matched and installed with the rear control arm of the vehicle body, and the outer surface of the rear air spring lower end annular boss 9 is outwards extended with a vertical column-shaped rear air spring lower end bulge 11 which is matched and positioned and installed with a positioning groove on the rear control arm of the vehicle body;

the utility model provides an air spring bag cover overturning device, which is shown in figure 6 and comprises a bench 12 with a rectangular frame structure, a worm gear lifter 13 fixedly arranged at the bottom of the bench 12, a rectangular plate-shaped upper steel plate 14 horizontally fixedly arranged at the upper end of the bench 12, a front air spring upper end sealing member 15 (shown in figures 7, 8, 20 and 21) with a rotating body structure for connecting and sealing a front air spring lower end central hole 6, a front air spring lower end sealing member 16 (shown in figures 9, 10, 20 and 21) with a rotating body structure for connecting and sealing a front air spring lower end central hole 6, a rear air spring upper end fixing member 17 (shown in figures 13, 14, 22 and 23) with a rotating body structure for connecting and fixing a rear air spring upper end annular boss 8, a rear air spring lower end fixing member 18 (shown in figures 11, 12, 22 and 23) with a rotating body structure for connecting and fixing a rear air spring lower end annular boss 9, and an air pressure maintaining valve 44 for communicating with a front air spring 3 or a rear air spring 7 of the front air spring 1 at a front air maintaining valve 10 and an air valve 10 at the front air maintaining port of the pressure (shown in figures 44), turning the hand wheel of the worm gear and worm lifter 13 to move the worm up and down along the axis of the vertical direction as shown in fig. 6, 18 and 19, there is an upper steel plate center through hole 19 at the center of the upper steel plate 14, which cooperates with a bolt for fixing the upper surface of the front air spring upper end seal 15 or the upper surface of the rear air spring upper end fixing 17, the axis of the upper steel plate center through hole 19 is on the same axis of the vertical direction as the axis of the worm gear and worm lifter 13, the lower surface of the upper steel plate 14 is provided with a circular groove 45 with the diameter larger than that of the upper steel plate center through hole 19, which is concentrically arranged on the upper steel plate center through hole 19, and the inner diameter of the circular groove 45 is the same as the outer diameter of the upper surface of the front air spring upper end sealing element 15 and the outer diameter of the upper surface of the rear air spring upper end fixing element 17;

As shown in fig. 20 and 21, when the front air spring capsule is turned, the center of the upper surface of the front air spring upper end sealing member 15 is fixed on the lower surface of the upper steel plate 14 through a bolt and an upper steel plate center through hole 19, the upper surface of the front air spring upper end sealing member 15 is inserted into a circular groove 45 of the upper steel plate 14, the lower surface of the front air spring lower end sealing member 16 is in threaded connection with the upper end of the worm gear lifter 13, so that the axis of the front air spring upper end sealing member 15, the axis of the front air spring lower end sealing member 16 and the axis of the worm gear lifter 13 are on the same vertical axis, and the pressure maintaining valve 44 is communicated with the front air spring charging port 3 and an external air source;

as shown in fig. 22 and 23, when the rear air spring cover is turned, the upper surface of the rear air spring upper end fixing member 17 is fixed on the lower surface of the upper steel plate 14 by bolts and the upper steel plate central through hole 19, the upper surface of the rear air spring upper end fixing member 17 is inserted into the circular groove 45 of the upper steel plate 14, the lower surface of the rear air spring lower end fixing member 18 is screwed with the upper end of the worm gear lifter 13, so that the axis of the rear air spring upper end fixing member 17, the axis of the rear air spring lower end fixing member 18 and the axis of the worm gear lifter 13 are on the same vertical axis, and the pressure maintaining valve 44 is communicated with the rear air spring charging port 10 and the external air source.

In this embodiment, as shown in fig. 7 and 8, the front air spring upper end seal 15 is a cylindrical revolving body with a closed top and an open bottom, a ring of outwardly extending annular front air spring upper end seal flange 20 is arranged at the lower end of the cylindrical portion of the front air spring upper end seal 15, four front air spring upper end seal flange through holes 21 for the corresponding front air spring upper cover connecting bolts 4 to pass through are uniformly distributed on the front air spring upper end seal flange 20, a connecting post 22 coaxially arranged and downwardly extending beyond the front air spring upper end seal flange 20 is arranged in the front air spring upper end seal 15, a sealing post 23 downwardly extending for being inserted into the front air spring upper end central hole 5 is coaxially arranged at the lower end of the connecting post 22, a front air spring upper end seal internal threaded hole 26 with internal threads is coaxially arranged at the center of the upper surface of the cylindrical portion of the front air spring upper end seal 15, the front air spring upper end seal 15 and a circular steel plate 14 is fixedly inserted into the upper surface of the upper end of the cylindrical portion of the front air spring upper end seal 14 through the front air spring upper end internal threaded hole 26, the bolts and the upper steel plate central through holes 19.

In this embodiment, as shown in fig. 7 and 8, an annular groove 24 is provided between the lower end of the connecting post 22 and the root of the sealing post 23, and a front air spring upper seal ring for enhancing the seal between the sealing post 23 and the front air spring upper end center hole 5 is provided in the annular groove 24.

In this embodiment, as shown in fig. 7 and 8, the cylindrical portion of the front air spring upper end seal 15 has a plurality of front air spring upper end seal hollowed portions 25 uniformly arranged at intervals, so as to reduce the weight of the front air spring upper end seal 15.

In this embodiment, as shown in fig. 9 and 10, the front air spring lower end seal 16 has a three-stage stepped shaft structure, the diameters of the three journals of the front air spring lower end seal 16 decrease from bottom to top, the three journals of the front air spring lower end seal 16 are sequentially a third journal, a second journal and a first journal from bottom to top, wherein the first journal of the front air spring lower end seal 16 is inserted into the small aperture section of the front air spring lower end center hole 6, the second journal of the front air spring lower end seal 16 is inserted into the large aperture section of the front air spring lower end center hole 6, a shoulder between the first journal and the second journal of the front air spring lower end seal 16 is sleeved with a front air spring lower seal ring for increasing the seal between the front air spring lower end seal 16 and the front air spring lower end center hole 6, an internal threaded hole 39 of the front air spring lower end seal is coaxially arranged at the center of the lower surface of the front air spring lower end seal 16, the internal threaded hole 39 of the front air spring lower end is coaxially connected with the worm screw hole of the worm screw 13 of the lifting worm gear of the lifting worm 13, and the worm gear 13 is coaxially connected to the worm screw 13 of the lifting worm screw.

In this embodiment, as shown in fig. 13 and 14, the rear air spring upper end fixing member 17 is a cylindrical revolving body with a closed top and an open bottom, a ring-shaped rear air spring upper end fixing member flange 27 extending outwards is provided at the lower end of the cylindrical portion of the rear air spring upper end fixing member 17, a semicircular notch 28 for accommodating the rear air spring inflation inlet 10 is provided on the rear air spring upper end fixing member flange 27, a circular groove 38 for accommodating the circular boss 8 of the rear air spring upper end is coaxially provided on the lower surface of the rear air spring upper end fixing member flange 27, a rear air spring upper end fixing member internal threaded hole 33 with internal threads is coaxially provided at the center of the upper surface of the cylindrical portion of the rear air spring upper end fixing member 17, the rear air spring upper end fixing member 17 is fixedly connected with the upper steel plate 14 through the rear air spring upper end fixing member internal threaded hole 33, the bolts and the upper steel plate central through hole 19, and the upper surface of the cylindrical portion of the rear air spring upper end fixing member 17 is inserted into the circular groove 45 of the upper steel plate 14.

In this embodiment, as shown in fig. 13 and 14, a plurality of rear air spring upper end fixing member hollowed-out parts 29 are provided on the cylindrical part of the rear air spring upper end fixing member 17 at uniform intervals to reduce the weight of the rear air spring upper end fixing member 17.

In this embodiment, as shown in fig. 11 and 12, the lower end fixing member 18 of the rear air spring is of a three-stage stepped shaft structure, the diameters of the three journals of the lower end fixing member 18 of the rear air spring increase sequentially from bottom to top, the three journals of the lower end fixing member 18 of the rear air spring are sequentially a third journal, a second journal and a first journal from bottom to top, wherein one of the first journal and the second journal of the lower end fixing member 18 of the rear air spring is provided with a lower end annular boss fixing hole 30 of the rear air spring into which the lower end annular boss 9 of the rear air spring is inserted, one side of the lower end annular boss fixing hole 30 of the rear air spring is provided with a lower end protruding groove 31 of the rear air spring for accommodating the lower end protrusion 11 of the rear air spring, one of the second journal and the third journal of the lower end fixing member 18 of the rear air spring is provided with an inner threaded hole 32 of the lower end fixing member of the rear air spring, the inner threaded hole 32 of the lower end fixing member of the rear air spring is connected with the worm screw of the upper end of the worm gear lifter 13 of the worm gear lifter, and the worm of the upper end of the worm gear lifter 13 of the rear air spring is coaxially fixed to the upper end of the worm gear lifter 13 of the rear air spring.

In this embodiment, as shown in fig. 15 and 16, a circular raised cushion 34 is disposed between the upper steel plate 14 and the upper end sealing member 15 of the front air spring or between the upper steel plate 14 and the upper end fixing member 17 of the rear air spring, a raised cushion internal threaded hole 35 with internal threads is coaxially disposed on the upper surface of the raised cushion 34, the outer diameter of the raised cushion 34 is the same as the inner diameter of the circular groove 45 on the lower surface of the upper steel plate 14, the raised cushion 34 is fixed on the lower surface of the upper steel plate 14 through the raised cushion internal threaded hole 35, the bolt and the upper steel plate central through hole 19, the upper surface of the raised cushion 34 is inserted into the circular groove 45 of the upper steel plate 14, a cylindrical raised cushion connecting post 36 which is coaxially disposed and protrudes downwards is disposed on the lower surface of the raised cushion connecting post 36, and a raised cushion connecting post external thread 37 which is in threaded connection with the inner threaded hole 26 of the upper end sealing member of the front air spring or in threaded connection with the inner threaded hole 33 of the upper end fixing member of the rear air spring is disposed on the outer surface of the raised cushion connecting post 36.

In this embodiment, as shown in fig. 6, the stand 12 includes four vertically disposed vertical steel pipes 40 distributed along four corner points of the rectangle, as shown in fig. 18 and 19, four right angle openings 41 for accommodating the vertical steel pipes 40 are provided at the four corner points of the upper steel plate 14, the four vertical steel pipes 40 are welded and fixed with the four right angle openings 41 of the upper steel plate 14, as shown in fig. 6, the lower ends of two adjacent vertical steel pipes 40 are welded and fixed by a horizontally disposed horizontal steel pipe 42, wherein a rectangular plate-shaped lower steel plate 43 is welded and fixed on two horizontal steel pipes located in front and rear for fixing the worm gear lifter 13.

The process of rolling the capsule skin of the front air spring 1 and the capsule skin of the rear air spring 7 by using the air spring capsule skin rolling device provided by the utility model is approximately as follows:

1. turning over of the envelope of the front air spring 1

First: the stroke of the worm gear and worm lifter 13 is adjusted according to the length of the front air spring 1, and a hand wheel of the worm gear and worm lifter 13 can be rotated to drive the worm to move up and down so as to adjust the stroke length; the length of stroke can be adjusted by adding a heightening cushion block 34 between the front air spring upper end sealing element 15 and the upper steel plate 14, so that the operation is simple in practical situations.

Second,: installing a front air spring upper sealing ring in the annular groove 24, sleeving four front air spring upper end sealing member flange through holes 21 on the front air spring upper end sealing member 15 on four front air spring upper cover connecting bolts 4 of the front air spring 1, fixing by nuts, inserting a sealing column 23 of the front air spring upper end sealing member 15 into a front air spring upper end central hole 5, fixedly connecting the front air spring upper end sealing member 15 with the front air spring 1 and sealing the front air spring upper end central hole 5; then, a shoulder between the first section shaft neck and the second section shaft neck of the front air spring lower end sealing piece 16 is sleeved with a front air spring lower sealing ring and smeared with lubricating grease, so that the front air spring lower end central hole 6 and the front air spring lower end sealing piece 16 are guaranteed to be sealed, torsion force generated after the capsule skin of the front air spring is inflated can be eliminated by twisting the front air spring lower end sealing piece 16, and then the front air spring lower end sealing piece 16 is pressed into the front air spring lower end central hole 6 at the lower end of the front air spring 1.

Notice that: ensure the quality of grease and otherwise easily corrode the front air spring lower sealing ring

Third,: fixing the sealed front air spring 1 on the rack 12; the front hollow spring upper end sealing element 15 is fixed on the upper steel plate 14 by bolts; the front air spring lower end seal 16 is screwed onto the threads of the upper end of the worm gear and worm lifter 13. Notice that: ensuring that the upper surface of the front air spring upper end sealing member 15 is embedded into the circular groove 45 of the upper steel plate 14 ensures the upper and lower centering coaxiality.

Fourth,: the pressure maintaining valve 44 is connected with the front air spring charging port 3 and connected with an external air source to charge the front air spring 1 by about 0.1 air pressure, then the worm of the worm wheel and worm lifter 13 drives the sealing piece 16 at the lower end of the front air spring to ascend to roll the capsule skin, when the roll reaches a designated position, the roll is stopped, the front air spring 1 is deflated, and the roll is completed.

Notice that: the inflation pressure is not too high, and is typically around 0.1 atmospheres.

Fifth,: it is checked whether the envelope of the front air spring 1 is uniformly rolled.

2. Turning over of the envelope of the rear air spring 1

First: the stroke length of the worm wheel and worm lifter 13 is adjusted according to the length of the rear air spring 7. The hand wheel of the worm wheel and worm lifter 13 can be rotated to enable the worm wheel to drive the worm to rise to adjust the height; the length of the rear air spring 7 can be adjusted by adding a height-increasing cushion block 34 between the upper end fixing piece 17 of the rear air spring and the upper steel plate 14, which is based on the simple operation in practical situations.

Second,: the upper end fixing piece 17 of the rear air spring is arranged on the upper steel plate 14, and the upper surface of the upper end fixing piece 17 of the rear air spring is ensured to be embedded into a circular groove 45 of the upper steel plate 14 so as to ensure the upper and lower coaxial shaft centering of the rear air spring 7; the lower end fixing piece 18 of the rear air spring is screwed on the screw thread of the upper end of the worm of the turbine worm lifter 13

Notice that: the rear air spring 7 can be ensured to move left and right after being fixed so as to eliminate torsion generated by the bag skin during turning.

Third,: the pressure maintaining valve 44 is connected with the rear air spring charging port 10 and connected with an external air source to charge the rear air spring 7 with about 0.1 atmosphere, then the worm of the worm gear and worm lifter 13 drives the lower end fixing piece 18 of the rear air spring to ascend for turning the capsule skin, after the turning reaches a designated position, the turning is stopped, and the rear air spring 7 is deflated to finish the turning.

Notice that: the pressure of the inflation is not too high, and is generally about 0.1 atmosphere

Fourth,: it is checked whether the envelope of the rear air spring 7 is uniformly rolled.

Claims (10)

1. An air spring bag cover rolling device is used for rolling the bag cover of a front air spring (1) and the bag cover of a rear air spring (7) when the air springs are replaced in the process of adjusting the automobile chassis;

the front air spring comprises a front air spring body and a shock absorber piston rod, wherein a round front air spring upper end round boss (2) is coaxially arranged on the upper end face of the front air spring (1), a front air spring upper end center hole (5) is coaxially arranged on the front air spring upper end round boss (2) and used for being matched and sealed with the shock absorber piston rod upper end sealing element, four front air spring upper cover connecting bolts (4) which are uniformly distributed on the upper end face of the front air spring (1) at intervals are arranged around the front air spring upper end face, a front air spring lower end center hole (6) is coaxially arranged at the lower end of the front air spring (1) and used for being matched and sealed with the shock absorber bottom, the front air spring lower end center hole (6) is a two-section stepped hole with the upper aperture smaller than the lower aperture, and a front air spring inflation port (3) which is vertically and downwards arranged on one side of the upper part of the front air spring (1) and is used for inflating a capsule shell of the front air spring (1);

The upper end of the rear air spring (7) is provided with a rear air spring upper end annular boss (8) which is coaxially arranged and used for being matched with a fixed position on the automobile body, the side surface of the rear air spring upper end annular boss (8) is provided with a rear air spring inflation port (10) which is horizontally arranged and is used for inflating the capsule skin of the rear air spring (7), the lower end of the rear air spring (7) is provided with a rear air spring lower end annular boss (9) which is coaxially arranged and matched with a rear control arm of the automobile body, and the outer surface of the rear air spring lower end annular boss (9) is outwards extended and provided with a column-shaped rear air spring lower end bulge (11) which is matched with a positioning groove on the rear control arm of the automobile body and is positioned and installed vertically;

the device is characterized by comprising a bench (12) with a rectangular frame structure, a worm wheel vortex rod lifter (13) fixedly arranged at the bottom of the bench (12), a rectangular plate-shaped upper steel plate (14) horizontally and fixedly arranged at the upper end of the bench (12), a front air spring upper end sealing member (15) which is used for connecting and sealing a front air spring upper end central hole (5) and is of a revolving structure, a front air spring lower end sealing member (16) which is used for connecting and sealing a front air spring lower end central hole (6) and is of a revolving structure, a rear air spring upper end fixing member (17) which is used for connecting and fixing a rear air spring upper end annular boss (8) and is of a revolving structure, a rear air spring lower end fixing member (18) which is used for connecting and fixing a rear air spring lower end annular boss (9) and is of a revolving structure, a pressure maintaining valve (44) which is used for being communicated with a front air spring charging port (3) of the front air spring (1) or a rear air spring charging port (10) and is used for maintaining pressure before rolling, a vertical axis of a hand wheel of the worm wheel lifter (13) is rotated to enable the upper end of the worm wheel lifter (8) to move along the vertical direction along the upper axis of the upper end of the upper steel plate (17) and the upper surface of the upper end of the steel plate (19) to be matched with the upper surface of the upper end of the upper surface of the upper steel plate (15), the axis of the upper steel plate center through hole (19) and the axis of the worm wheel and worm lifter (13) are on the same vertical axis, the lower surface of the upper steel plate (14) is provided with a circular groove (45) with the diameter larger than that of the upper steel plate center through hole (19) and concentrically arranged on the upper steel plate center through hole (19), and the inner diameter of the circular groove (45) is the same as the outer diameter of the upper surface of the front air spring upper end sealing element (15) and the outer diameter of the upper surface of the rear air spring upper end fixing element (17);

When the front air spring bag cover is turned, the center of the upper surface of the front air spring upper end sealing piece (15) is fixed on the lower surface of the upper steel plate (14) through a bolt and an upper steel plate center through hole (19), the upper surface of the front air spring upper end sealing piece (15) is inserted into a circular groove (45) of the upper steel plate (14), the lower surface of the front air spring lower end sealing piece (16) is in threaded connection with the upper end of a worm of the worm gear and worm lifter (13), so that the axis of the front air spring upper end sealing piece (15), the axis of the front air spring lower end sealing piece (16) and the axis of the worm gear and worm lifter (13) are on the same vertical axis, and a pressure maintaining valve (44) is communicated with the front air spring charging port (3) and an external air source;

when the rear air spring bag cover is turned, the upper surface of the rear air spring upper end fixing piece (17) is fixed on the lower surface of the upper steel plate (14) through a bolt and an upper steel plate center through hole (19), the upper surface of the rear air spring upper end fixing piece (17) is inserted into a circular groove (45) of the upper steel plate (14), the lower surface of the rear air spring lower end fixing piece (18) is in threaded connection with the upper end of a worm of the worm gear lifter (13), and the axis of the rear air spring upper end fixing piece (17), the axis of the rear air spring lower end fixing piece (18) and the axis of the worm gear lifter (13) are in the same vertical axis, and the pressure maintaining valve (44) is communicated with the rear air spring inflation inlet (10) and an external air source.

2. An air spring capsule skin rolling device according to claim 1, characterized in that the front air spring upper end sealing member (15) is a cylindrical revolving body with a closed top and an open bottom, a ring-shaped front air spring upper end sealing member flange (20) extending outwards is arranged at the lower end of the cylindrical part of the front air spring upper end sealing member (15), four front air spring upper end sealing member flange through holes (21) for the corresponding front air spring upper cover connecting bolts (4) to penetrate through are uniformly distributed on the front air spring upper end sealing member flange (20), a connecting column (22) extending downwards and exceeding the front air spring upper end sealing member flange (20) is arranged in the front air spring upper end sealing member (15), a sealing column (23) extending downwards and used for being inserted into a front air spring upper end central hole (5) is coaxially arranged at the center of the upper surface of the cylindrical part of the front air spring upper end sealing member (15), a front air spring upper end sealing member inner threaded hole (26) with inner threads is coaxially arranged at the center of the upper surface of the cylindrical part of the front air spring upper end sealing member (15), and the upper end sealing member upper end of the front air spring upper plate (14) is fixedly connected with the upper end of the upper plate sealing member (14) through the inner threaded hole (45).

3. An air spring capsule rolling device according to claim 2, characterized in that an annular groove (24) is arranged between the lower end of the connecting column (22) and the root of the sealing column (23), and a front air spring upper sealing ring for enhancing the sealing between the sealing column (23) and the front air spring upper end central hole (5) is arranged in the annular groove (24).

4. An air spring bladder rolling device according to claim 2, wherein the cylindrical part of the front air spring upper end sealing member (15) is provided with a plurality of front air spring upper end sealing member hollowed-out parts (25) which are uniformly arranged at intervals so as to lighten the weight of the front air spring upper end sealing member (15).

5. The air spring capsule rolling device according to claim 1, wherein the front air spring lower end sealing member (16) is of a three-section stepped shaft structure, the diameters of three-section journals of the front air spring lower end sealing member (16) are sequentially reduced from bottom to top, the three-section journals of the front air spring lower end sealing member (16) are sequentially a third section journal, a second section journal and a first section journal from bottom to top, the first section journal of the front air spring lower end sealing member (16) is inserted into a small-bore section of a front air spring lower end central hole (6), the second section journal of the front air spring lower end sealing member (16) is inserted into a large-bore section of the front air spring lower end central hole (6), a sealing ring for increasing the sealing between the first section journal and the second section journal of the front air spring lower end sealing member (16) and the front air spring lower end central hole (6) is sleeved on the shoulder, the front air spring lower end sealing member (16) is coaxially inserted into a worm screw (39) of a worm screw (13) which is coaxially connected with the worm screw (13) at the position of the front end of the worm screw (13).

6. An air spring bag cover turning device according to claim 1, characterized in that the rear air spring upper end fixing member (17) is a cylindrical revolving body with a closed top and an open bottom, a ring-shaped rear air spring upper end fixing member flange (27) extending outwards is arranged at the lower end of the cylindrical part of the rear air spring upper end fixing member (17), a semicircular notch (28) for accommodating the rear air spring inflation port (10) is arranged on the rear air spring upper end fixing member flange (27), a circular groove (38) which is concave upwards and used for accommodating the circular boss (8) of the rear air spring upper end is coaxially arranged on the lower surface of the rear air spring upper end fixing member flange (27), a rear air spring upper end fixing member inner threaded hole (33) with inner threads is coaxially arranged at the center of the upper surface of the cylindrical part of the rear air spring upper end fixing member (17), the rear air spring upper end fixing member (17) and the upper steel plate (14) are fixedly connected through the rear air spring upper end fixing member inner threaded hole (33), a bolt and the upper steel plate central through hole (19), and the upper steel plate upper end fixing member (14) is inserted into the circular groove (45) of the upper surface of the cylindrical steel plate upper end fixing member (14).

7. The air spring bag cover rolling device according to claim 6, wherein a plurality of rear air spring upper end fixing piece hollowed-out parts (29) which are uniformly arranged at intervals are arranged on the cylindrical part of the rear air spring upper end fixing piece (17) so as to lighten the weight of the rear air spring upper end fixing piece (17).

8. The air spring capsule rolling device according to claim 1, wherein the lower end fixing piece (18) of the rear air spring is of a three-section stepped shaft structure, the diameters of three journals of the lower end fixing piece (18) of the rear air spring are sequentially increased from bottom to top, the three journals of the lower end fixing piece (18) of the rear air spring are sequentially a third journal, a second journal and a first journal from bottom to top, one of the first journal and the second journal of the lower end fixing piece (18) of the rear air spring is provided with a lower end annular boss fixing hole (30) for inserting the lower end annular boss (9) of the rear air spring, one side of the lower end annular boss fixing hole (30) of the rear air spring is provided with a lower end protruding groove (31) of the rear air spring, the second journal and the third journal of the lower end fixing piece (18) of the rear air spring are sequentially provided with a lower end fixing piece (32) of the rear air spring with internal threads, and the lower end fixing piece of the rear air spring is coaxially connected with the worm screw (13) of the worm screw on the upper end of the worm screw.

9. An air spring bag cover rolling device according to claim 1, characterized in that a circular heightening cushion block (34) is arranged between an upper steel plate (14) and a front air spring upper end sealing element (15) or between the upper steel plate (14) and a rear air spring upper end fixing element (17), the upper surface of the heightening cushion block (34) is provided with a heightening cushion block internal threaded hole (35) with internal threads, the outer diameter of the heightening cushion block (34) is the same as the inner diameter of a circular groove (45) on the lower surface of the upper steel plate (14), the heightening cushion block (34) is fixed on the lower surface of the upper steel plate (14) through the heightening cushion block internal threaded hole (35), a bolt and an upper steel plate central through hole (19), the upper surface of the heightening cushion block (34) is inserted into a circular groove (45) of the upper steel plate (14), the lower surface of the heightening cushion block (34) is provided with a cylindrical heightening cushion block connecting column (36) which is arranged downwards and is coaxially, and the outer surface of the heightening cushion block connecting column (36) is provided with a heightening threaded hole (37) which is connected with the internal threaded hole (26) of the front air spring upper end sealing element or connected with the external threaded hole (37) of the upper end fixing element.

10. An air spring bag cover turning device according to any one of claims 1 to 9, characterized in that the bench (12) comprises four vertically arranged vertical steel pipes (40) distributed along four corner points of the rectangle, four corner points of the upper steel plate (14) are provided with four right angle openings (41) for accommodating the vertical steel pipes (40), the four right angle openings (41) of the four vertical steel pipes (40) and the upper steel plate (14) are welded and fixed, the lower ends of two adjacent vertical steel pipes (40) are welded and fixed through a horizontally arranged horizontal steel pipe (42), and a rectangular plate-shaped lower steel plate (43) is welded and fixed on the two horizontal steel pipes positioned in front and at the rear for fixing the worm gear and worm lifter (13).