High-coaxiality pneumatic spring support

Abstract

The utility model relates to the technical field of pneumatic springs, in particular to a high-coaxiality pneumatic spring support which comprises a barrel and a piston arranged in the barrel in a sliding mode, a swallow-tail-shaped sliding groove is annularly formed in the inner wall of the barrel, a swallow-tail-shaped sliding block matched with the swallow-tail-shaped sliding groove is arranged on the outer surface of the piston, and the swallow-tail-shaped sliding block is matched with the swallow-tail-shaped sliding groove. A guide shell is arranged at the position, corresponding to the swallow-tail-shaped sliding block, of the outer surface of the cylinder, a through groove enabling the guide shell and the swallow-tail-shaped sliding groove to be communicated with each other is formed in the position, located between the guide shell and the swallow-tail-shaped sliding groove, of the cylinder, a guide rail is arranged in the guide shell, and a follow-up assembly is arranged on the side, away from the piston, of the swallow-tail-shaped sliding block and penetrates through the through groove to be slidably connected with the guide rail. The utility model has higher coaxiality, the piston is not easy to deviate and damage, and the service life is longer.

Description

TECHNICAL FIELD

[0001] The utility model belongs to pneumatic spring technical field, specifically is high pneumatic spring support of coaxial degree. BACKGROUND

[0002] Gas spring is in the pressure cylinder of resealing and is mixed into inert gas or paint, makes the pressure in the cavity higher than atmospheric pressure, utilizes the cross section of piston rod to be less than the cross section of piston, thereby generates the pressure difference to realize the movement of piston rod, the cooperation gap between the existing piston and cylinder inner wall exists certainly, makes its coaxial degree not enough high, will occur the deviation in the process of long time movement of piston, leads to the piston damage. INNOVATION CONTENT

[0003] The utility model solves the technical problem that in view of above -mentioned defect, provide a kind of high pneumatic spring support of coaxial degree, coaxial degree is higher, piston is not prone to deviation damage, and life is more long.

[0004] The utility model discloses a technical scheme that solves its technical problem as follows: high pneumatic spring support of coaxial degree, including cylinder and the piston of slidingly being arranged in the inside of cylinder, annularly set up dovetail slide groove on the inner wall of cylinder, the outer surface of piston is provided with dovetail slide block matched with dovetail slide groove, the outer surface of cylinder is provided with guide housing corresponding with dovetail slide block, the through groove of making it intercommunication is provided on the cylinder between guide housing and dovetail slide groove, guide rail is provided in the inside of guide housing, the side, away from piston, of dovetail slide block is provided with follow-up assembly, follow-up assembly is slidably connected with guide rail by through groove.

[0005] Further, the follow-up assembly includes a follow-up block and a ball, the follow-up block is arranged on the side, away from the piston, of the dovetail slide block, and the follow-up block is slidably connected with the through groove, the ball is arranged on the side, away from the dovetail slide block, of the follow-up block, and the dovetail slide block extends to the inside of the guide housing through the through groove.

[0006] Further, the side, close to the ball, of the guide rail is provided with an arc-shaped groove matched with the ball.

[0007] Further, the piston rod is arranged on the top end of the piston.

[0008] Further, the guide seat is arranged on the top end of the inside of the cylinder, and the top end of the piston rod extends to the top end of the cylinder by penetrating the guide seat and the cylinder.

[0009] The utility model has the advantages that:

[0010] The utility model discloses a dovetail -shaped sliding slot, dovetail -shaped sliding block, guide casing, through groove, guide rail, the cooperation of follow -up assembly is set up, and the moving direction of piston is guided and is positioned to piston by dovetail -shaped sliding slot, dovetail -shaped sliding block, and the coaxial degree of piston and cylinder is higher, and it is not easy to deviate in the process of moving, and the structure of dovetail -shaped can effectively prevent the phenomenon of breaking away produced by thermal expansion and cold shrink, make its cooperation more stable, and the further direction of piston is guided and is positioned in the movement of piston, and the coaxial degree is higher, and piston is not easy to deviate and damage, and the life is more long, and follow -up assembly is along with the movement of piston, and the sensitivity of piston is better. BRIEF DESCRIPTION OF DRAWINGS

[0011] The foregoing and other objects, features and advantages of the utility model will become more apparent from the following detailed description, when taken in conjunction with the accompanying drawings.

[0012] Figure 1 It is the front view cutaway view of the utility model.

[0013] Figure 2 It is the cylinder top view cutaway view of the utility model.

[0014] Figure 3 It is Figure 1 The structure enlarged schematic drawing of A place.

[0015] Wherein: 1, cylinder;2, piston;3, dovetail -shaped sliding slot;4, dovetail -shaped sliding block;5, guide casing;6, through groove;7, guide rail;701, arc -shaped recess;801, follow -up block;802, ball;9, piston rod;10, guide seat. PREFERRED EMBODIMENT

[0016] The utility model makes further explanation below in conjunction with the drawings.

[0017] Referring to Figures 1-3 As shown in the figure, high coaxial degree pneumatic spring support, including cylinder 1 and the piston 2 of sliding setting in the inside of cylinder 1, the inside wall of cylinder 1 is annular and is provided with dovetail -shaped sliding slot 3, and the piston 2 outer surface is provided with dovetail -shaped sliding block 4 matched with dovetail -shaped sliding slot 3, and the dovetail -shaped sliding slot 3 is divided into equal parts and is provided on the inner wall of cylinder 1, and the dovetail -shaped sliding block 4 is divided into equal parts and is provided on the outer surface of piston 2, and the dovetail -shaped sliding block 4 is slidably connected with dovetail -shaped sliding slot 3, and they are matched with each other, and the moving direction of piston 2 in cylinder 1 is guided and positioned, and the coaxial degree is better, and it will not deviate in the movement, and the structure of dovetail -shaped can effectively prevent the phenomenon of breaking away produced by thermal barrier cold shrink, and the cooperation of dovetail -shaped sliding block 4 and dovetail -shaped sliding slot 3 is more stable.

[0018] The outer surface of the cylinder body 1 is provided with a guide shell 5 corresponding to the dovetail-shaped sliding block 4, the cylinder body 1 is provided with a through groove 6 for connecting the guide shell 5 and the dovetail-shaped sliding groove 3, the guide shell 5, the through groove 6, the dovetail-shaped sliding groove 3, and the dovetail-shaped sliding block 4 are on the same central axis, the guide shell 5 is internally provided with a guide rail 7, the side of the dovetail-shaped sliding block 4 away from the piston 2 is provided with a follower assembly, the follower assembly is slidably connected with the guide rail 7 through the through groove 6, the follower assembly is slidably connected with the through groove 6 and moves on the guide rail 7 along with the movement of the piston 2, the cooperation of the piston 2 and the follower assembly further guides and limits the movement of the piston 2, the coaxial degree of the piston 2 is higher, the piston 2 is less likely to be damaged by deviation, and the service life of the piston 2 is longer.

[0019] The follower assembly includes a follower block 801 and a ball 802, the follower block 801 is arranged on the side of the dovetail-shaped sliding block 4 away from the piston 2 and is slidably connected with the through groove 6, the through groove 6 guides and limits the movement direction of the follower block 801, the ball 802 is arranged on the side of the follower block 801 away from the dovetail-shaped sliding block 4, the dovetail-shaped sliding block 4 extends to the inside of the guide shell 5 through the through groove 6, the guide rail 7 is provided with an arc-shaped groove 701 matching the ball 802 on the side close to the ball 802, the ball 802 reciprocally rolls on the guide rail 7 along with the up-and-down movement of the piston 2 in the arc-shaped groove 701, the cooperation of the arc-shaped groove 701 and the ball 802 further guides and limits the movement of the piston 2, the movement of the ball 802 makes the movement of the piston 2 more sensitive, the cooperation of the follower block 801, the through groove 6, the ball 802, the arc-shaped groove 701, the dovetail-shaped sliding block 4, and the dovetail-shaped sliding groove 3 forms multiple limiting and guiding, the coaxial degree of the piston 2 is higher, the piston 2 is less likely to be damaged by deviation, and the service life of the piston 2 is longer.

[0020] Preferably, the piston 2 is provided with a piston rod 9 at the top end, the inside of the cylinder body 1 is provided with a guide seat 10 at the top end, the top end of the piston rod 9 extends to the top end of the cylinder body 1 through the guide seat 10 and the cylinder body 1, the guide seat 10 guides and limits the movement of the piston rod 9, and the piston rod 9 moves along with the up-and-down movement of the piston 2.

[0021] The above is only a preferred embodiment of the present application, and does not limit the present application in any form, any simple modification or equivalent change made on the basis of the technical essence of the present application to the above embodiment falls within the protection scope of the present application.

Claims

1. A pneumatic spring bearing with high coaxiality, comprising a cylinder (1) and a piston (2) slidingly arranged inside the cylinder (1), characterized in that: The inner wall of the barrel (1) is annularly provided with a dovetail-shaped sliding groove (3), the outer surface of the piston (2) is provided with a dovetail-shaped sliding block (4) matched with the dovetail-shaped sliding groove (3), the outer surface of the barrel (1) is provided with a guide housing (5) corresponding to the dovetail-shaped sliding block (4), the barrel (1) is provided with a through groove (6) for intercommunication between the guide housing (5) and the dovetail-shaped sliding groove (3), the guide housing (5) is internally provided with a guide rail (7), the side of the dovetail-shaped sliding block (4) away from the piston (2) is provided with a follow-up assembly, and the follow-up assembly is slidably connected with the guide rail (7) through the through groove (6).

2. The high-coaxiality gas spring mount of claim 1, wherein: The follow-up assembly comprises a follow-up block (801) and a ball (802), the follow-up block (801) is arranged on the side of the dovetail-shaped sliding block (4) away from the piston (2) and is slidably connected with the through groove (6), and the ball (802) is arranged on the side of the follow-up block (801) away from the dovetail-shaped sliding block (4) and rolls, the dovetail-shaped sliding block (4) extends to the inside of the guide housing (5) through the through groove (6).

3. The high-coaxiality gas spring mount of claim 2, wherein: The side of the guide rail (7) close to the ball (802) is provided with an arc-shaped groove (701) matched with the ball (802).

4. The high-coaxiality gas spring mount of claim 1, wherein: The top end of the piston (2) is provided with a piston rod (9).

5. The high-coaxiality gas spring mount of claim 4, wherein: The top end of the inside of the barrel (1) is provided with a guide seat (10), and the top end of the piston rod (9) extends to the top end of the barrel (1) through the guide seat (10) and the barrel (1).

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