Commercial vehicle air spring capable of automatically adjusting height

Abstract

The utility model relates to the technical field of air springs, in particular to a commercial vehicle air spring capable of automatically adjusting height, which comprises an air spring body, a support is fixed at the bottom end of the air spring body, a base is arranged below the support, a hydraulic cylinder is fixed at the top end of the base, and a piston rod of the hydraulic cylinder is connected with the support. A protection mechanism is arranged above the hydraulic cylinder, a connecting piece is arranged at the bottom end of the base, and a plurality of mounting holes are formed in the base; the top end of the air spring body is fixed to a frame of the commercial vehicle through bolts, the base is fixed to a chassis of the commercial vehicle through bolts, a piston rod of the hydraulic cylinder drives the support to move vertically, the bottom end of the air spring body moves vertically along with the support, and automatic adjustment of the height of the bottom end of the air spring body is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of air springs, and particularly relates to a commercial vehicle air spring with automatic height adjustment. Background Technique

[0002] Air spring: A spring that fills compressed air in a telescopic sealed container and utilizes the elastic effect of air. Commonly known as airbag, airbag cylinder, leather bag cylinder, etc. The air spring is of a curved bladder structure, and the number of its curved bladders is usually 1 to 3, but it can also be designed and manufactured into a sleeve type, membrane type, or belt type air spring according to needs, and two bladder type air springs can also be superimposed and used under certain conditions. After the commercial vehicle air spring is installed, the height of the bottom end of the air spring is fixed, which is not convenient for adjustment according to needs. Therefore, a commercial vehicle air spring with automatic height adjustment is proposed to facilitate adjustment according to needs. Content of the Utility Model

[0003] Aiming at the problems in the prior art, the utility model provides a commercial vehicle air spring with automatic height adjustment.

[0004] The technical solution adopted by the utility model to solve its technical problems is a commercial vehicle air spring with automatic height adjustment, which includes an air spring body. A support is fixed at the bottom end of the air spring body. A base is arranged below the support. A hydraulic cylinder is fixed at the top end of the base. The piston rod of the hydraulic cylinder is connected to the support. A protection mechanism is arranged above the hydraulic cylinder. A connecting piece is arranged at the bottom end of the base, and a plurality of mounting holes are formed in the base.

[0005] By adopting the above technical solution, the top end of the air spring body is fixed on the frame of the commercial vehicle by bolts, and the base is fixed on the chassis of the commercial vehicle by bolts. The piston rod of the hydraulic cylinder drives the support to move vertically, and the bottom end of the air spring body moves vertically accordingly, realizing the automatic adjustment of the height of the bottom end of the air spring body.

[0006] Specifically, two sleeves are fixed at the top end of the base, and vertical rods are arranged in both sleeves. The top ends of both vertical rods are connected to the support.

[0007] By adopting the above technical solution, the piston rod of the hydraulic cylinder drives the support to move vertically. The arrangement of the sleeves and the vertical rods can improve the stability of the support.

[0008] Specifically, the protection mechanism includes a telescopic cover, a clamping sleeve, and a limit bolt. There are two clamping sleeves. One of the clamping sleeves is connected to the top end of the air spring body, and the other clamping sleeve is connected to the support. A telescopic cover is arranged between the two clamping sleeves. A plurality of screw holes adapted to the limit bolt are formed at both ends of the two clamping sleeves and the telescopic cover.

[0009] By adopting the above technical solution, the top end of the telescopic cover is connected to the ferrule away from the hydraulic cylinder by using a limit bolt away from the hydraulic cylinder, and the ferrule close to the hydraulic cylinder is connected to the bottom end of the telescopic cover by using a limit bolt close to the hydraulic cylinder. The telescopic cover can expand and contract with the expansion and contraction of the air spring body, which not only does not affect the use of the air spring body, but also the telescopic cover can shield and protect the air spring body.

[0010] Specifically, the connecting member includes a bottom support and connecting bolts. The bottom support is arranged at the bottom end of the base. Through holes for the top ends of the connecting bolts to pass through are formed in both the bottom support and the base. Nuts are arranged on the plurality of connecting bolts, and a through groove is formed in the bottom support.

[0011] By adopting the above technical solution, the bottom support is connected to the base by using connecting bolts, and the through groove on the bottom support facilitates the passing of the bolt ends, and can adapt to different installation requirements.

[0012] Specifically, the hydraulic cylinder is connected to the base by bolts, and the support is connected to the piston rod of the hydraulic cylinder by bolts.

[0013] Advantages of the present utility model:

[0014] (1) For the automatic-adjusting-height air spring for commercial vehicles of the present utility model, the top end of the air spring body is fixed on the vehicle frame of the commercial vehicle by using bolts, the base is fixed on the vehicle chassis of the commercial vehicle by using bolts, the piston rod of the hydraulic cylinder drives the support to move vertically, and the bottom end of the air spring body moves vertically accordingly, realizing the automatic adjustment of the height of the bottom end of the air spring body.

[0015] (2) For the automatic-adjusting-height air spring for commercial vehicles of the present utility model, the top end of the telescopic cover is connected to the ferrule away from the hydraulic cylinder by using a limit bolt away from the hydraulic cylinder, and the ferrule close to the hydraulic cylinder is connected to the bottom end of the telescopic cover by using a limit bolt close to the hydraulic cylinder. The telescopic cover can expand and contract with the expansion and contraction of the air spring body, which not only does not affect the use of the air spring body, but also the telescopic cover can shield and protect the air spring body. Description of the drawings

[0016] The present utility model will be further described below in conjunction with the drawings and embodiments.

[0017] Figure 1 is a schematic structural diagram of the present utility model;

[0018] Figure 2 is for the present utility model Figure 1 an enlarged view of the structure at A in;

[0019] Figure 3 is for the present utility model Figure 1 an enlarged view of the structure at B in.

[0020] In the figure: 1. Air spring body; 2. Ferrule; 3. Support; 4. Vertical rod; 5. Hydraulic cylinder; 6. Sleeve; 7. Base; 8. Bottom support; 9. Protection mechanism; 90. Telescopic cover; 10. Connector; 11. Limit bolt; 12. Connecting bolt; 13. Nut. Specific implementation mode

[0021] In order to make the technical means, creative features, achieved purposes and functions realized by the present utility model easy to understand, the present utility model will be further described below in conjunction with specific implementation modes.

[0022] For the convenience of adjustment, as an embodiment of the present utility model, as Figure 1 shown, an air spring for a commercial vehicle with automatically adjustable height according to the present utility model includes an air spring body 1. The bottom end of the air spring body 1 is fixed with a support 3 through bolts. A base 7 is arranged below the support 3. A hydraulic cylinder 5 is fixed to the top end of the base 7. The piston rod of the hydraulic cylinder 5 is connected to the support 3. A protection mechanism 9 is arranged above the hydraulic cylinder 5. A connector 10 is arranged at the bottom end of the base 7. A plurality of mounting holes are formed in the base 7.

[0023] During use, the top end of the air spring body 1 is fixed to the frame of the commercial vehicle by bolts, and the base 7 is fixed to the chassis of the commercial vehicle by bolts. The piston rod of the hydraulic cylinder 5 drives the support 3 to move vertically, and the bottom end of the air spring body 1 moves vertically accordingly, realizing automatic adjustment of the height of the bottom end of the air spring body 1.

[0024] For improving the stability of the support 3, by way of example, as Figure 1 shown, two sleeves 6 are welded and fixed to the top end of the base 7. Vertical rods 4 are arranged in both of the two sleeves 6. The top ends of the two vertical rods 4 are welded and connected to the support 3.

[0025] For protecting the air spring body 1, by way of example, as Figure 1 、 Figure 3 shown, the protection mechanism 9 includes a telescopic cover 90, ferrules 2 and limit bolts 11. There are two ferrules 2. One of the ferrules 2 is welded and connected to the top end of the air spring body 1, and the other ferrule 2 is welded and connected to the support 3. A telescopic cover 90 is arranged between the two ferrules 2. A plurality of screw holes adapted to the limit bolts 11 are formed at both ends of the two ferrules 2 and the telescopic cover 90.

[0026] In use, the top end of the telescopic cover 90 is connected to the ferrule 2 away from the hydraulic cylinder 5 by means of a limit bolt 11 away from the hydraulic cylinder 5, and the ferrule 2 near the hydraulic cylinder 5 is connected to the bottom end of the telescopic cover 90 by means of a limit bolt 11 near the hydraulic cylinder 5. The telescopic cover 90 can expand and contract with the expansion and contraction of the air spring body 1, which not only does not affect the use of the air spring body 1, but also the telescopic cover 90 can shield and protect the air spring body 1.

[0027] To meet different installation requirements, for example, as Figure 1 、 Figure 2 shown, the connecting member 10 includes a bottom bracket 8 and a connecting bolt 12. The bottom bracket 8 is provided at the bottom end of the base 7. Through holes for the top ends of the connecting bolts 12 to pass through are formed in both the bottom bracket 8 and the base 7. Nuts 13 are provided on the plurality of connecting bolts 12, and a through groove is formed in the bottom bracket 8.

[0028] During installation, the bottom bracket 8 is connected to the base 7 by means of the connecting bolt 12. The through groove in the bottom bracket 8 facilitates the passing of the bolt end, and can adapt to different installation requirements.

[0029] The hydraulic cylinder 5 is connected to the base 7 by bolts, and the support 3 is connected to the piston rod of the hydraulic cylinder 5 by bolts.

[0030] When the present utility model is in use, the top end of the air spring body 1 is fixed to the frame of the commercial vehicle by bolts, the base 7 is fixed to the chassis of the commercial vehicle by bolts, the top end of the telescopic cover 90 is connected to the ferrule 2 away from the hydraulic cylinder 5 by means of a limit bolt 11 away from the hydraulic cylinder 5, and the ferrule 2 near the hydraulic cylinder 5 is connected to the bottom end of the telescopic cover 90 by means of a limit bolt 11 near the hydraulic cylinder 5. The telescopic cover 90 can expand and contract with the expansion and contraction of the air spring body 1, which not only does not affect the use of the air spring body 1, but also the telescopic cover 90 can shield and protect the air spring body 1 (the air spring body 1 is a prior art, and the specific structure and principle will not be elaborated).

[0031] The piston rod of the hydraulic cylinder 5 drives the support 3 to move vertically, and the bottom end of the air spring body 1 moves vertically accordingly, realizing automatic adjustment of the height of the bottom end of the air spring body 1.

[0032] The basic principles, main features and advantages of the present utility model have been shown and described above. Those skilled in the art should understand that the present utility model is not limited by the above embodiments. The above embodiments and the descriptions in the specification only illustrate the principles of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements all fall within the scope of protection required by the present utility model. The scope of protection required by the present utility model is defined by the appended claims and their equivalents. The content not described in detail in the present utility model belongs to the prior art well-known to those skilled in the art.

Claims

1. An air spring for commercial vehicles with automatic height adjustment, characterized in that, It includes an air spring body (1), a support (3) is fixed to the bottom end of the air spring body (1), a base (7) is provided below the support (3), a hydraulic cylinder (5) is fixed to the top end of the base (7), the piston rod of the hydraulic cylinder (5) is connected to the support (3), a protection mechanism (9) is provided above the hydraulic cylinder (5), a connecting member (10) is provided at the bottom end of the base (7), and a plurality of mounting holes are formed in the base (7).

2. The air spring for commercial vehicle with automatically adjustable height according to claim 1, wherein, Two sleeves (6) are fixed to the top end of the base (7), vertical rods (4) are provided in both of the two sleeves (6), and the top ends of the two vertical rods (4) are both connected to the support (3).

3. An air spring for commercial vehicles with automatically adjustable height according to claim 1, characterized in that, The protection mechanism (9) includes a telescopic cover (90), a clamping sleeve (2) and a limit bolt (11). There are two clamping sleeves (2). One of the clamping sleeves (2) is connected to the top end of the air spring body (1), and the other clamping sleeve (2) is connected to the support (3). A telescopic cover (90) is provided between the two clamping sleeves (2). A plurality of screw holes adapted to the limit bolt (11) are formed at both ends of the two clamping sleeves (2) and the telescopic cover (90).

4. An air spring for commercial vehicles with automatic height adjustment according to claim 1, characterized in that, The connecting member (10) includes a bottom support (8) and a connecting bolt (12). The bottom support (8) is provided at the bottom end of the base (7). Through holes for the top ends of the connecting bolts (12) to pass through are formed in both the bottom support (8) and the base (7). Nuts (13) are provided on a plurality of the connecting bolts (12), and a through groove is formed in the bottom support (8).

5. An air spring for commercial vehicles with automatic height adjustment according to claim 1, characterized in that, The hydraulic cylinder (5) is connected to the base (7) by bolts, and the support (3) is connected to the piston rod of the hydraulic cylinder (5) by bolts.

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