CN217814261U - Air cylinder - Google Patents

Abstract

The utility model relates to a cylinder technical field discloses a cylinder, include: the cylinder comprises a cylinder body, a first end cover, a first dustproof ring, a second end cover, a cylinder body, a guide rod, an end plate and a dustproof cover; the cylinder body is provided with a cylinder barrel and a piston rod inserted in the cylinder barrel; the cylinder barrel is provided with a first end and a second end which are opposite; the first end cover is positioned in the cylinder barrel close to the first end and sealed with the inner wall of the cylinder barrel through a first sealing ring, and the first end cover is provided with a first through hole sleeved on the piston rod; the first dust ring is sleeved on the piston rod and fixed on the inner wall of the first through hole, and the first through hole and the piston rod are sealed through a second sealing ring; the second end cover is positioned on the second end and sealed with the inner wall of the cylinder barrel through a third sealing ring; the cylinder body is fixedly connected to the cylinder body; the guide rod is arranged in the cylinder in a penetrating way; the end plate is fixedly connected with the guide rod and the piston rod; the dust cap covers the second end cap and the one end of the barrel. The air cylinder can be ensured to be used in a multi-dust environment.

Description

Air cylinder

Technical Field

The utility model relates to a cylinder technical field especially relates to a cylinder.

Background

At present, cylinders are common mechanical parts, which generally use compressed air as a driving force. The cylinder generally makes reciprocating motion in the piston chamber under the effect of atmospheric pressure, drives the piston rod motion, and dustproof demand has all been neglected to the cylinder on the market now, or its dustproof ability can not be competent in the environment of many dusts.

SUMMERY OF THE UTILITY MODEL

The utility model aims at: the cylinder with high dustproof capacity is provided to ensure that the cylinder can be used in a multi-dust environment.

In order to achieve the above object, the present invention provides a cylinder, including: the cylinder comprises a cylinder body, a first end cover, a first dustproof ring, a second end cover, a cylinder body, a guide rod, an end plate and a dustproof cover; the cylinder body is provided with a cylinder barrel extending along a preset linear direction, a piston rod inserted in the cylinder barrel and capable of telescopically moving along the preset linear direction, and a piston positioned in the cylinder barrel and fixedly connected with one end of the piston rod; the cylinder barrel has opposite first and second ends; the first end cover is hermetically arranged in the cylinder barrel close to the first end, and the first end cover is provided with a first through hole which is sleeved on the piston rod; the first dust ring is sleeved on the piston rod in a sliding mode and is connected with the inner wall of the first through hole in a sealing mode; a second end cap sealingly mounted on said second end; the cylinder body extends along the extension direction of the preset straight line and is fixedly connected to the cylinder body; the guide rod penetrates through the cylinder body and can slide relative to the cylinder body; the guide rod is arranged in parallel with the cylinder body; the end plate is fixedly connected with the guide rod and the piston rod; the dustproof cover covers the second end cover and is fixedly connected with the cylinder body; the dust cover also covers the end of the cylinder body close to the second end cover.

Wherein, first dust ring and second dust ring pass through the jump ring and press it in first annular and the second annular that corresponds to prevent that first dust ring from droing in first annular at the piston rod motion process, prevent that second dust ring from droing in the second annular at the guide arm motion process.

The cylinder body close to the first end cover is provided with a first air hole communicated with the cylinder barrel, and the cylinder body close to the second end cover is provided with a second air hole communicated with the cylinder barrel; the piston is positioned between the first air hole and the second air hole; the first air hole and the second air hole are used for being communicated with an external high-pressure air source; a first spare hole communicated with the cylinder barrel is further formed in the cylinder body near the first air hole, and a second spare hole communicated with the cylinder barrel is further formed in the cylinder body near the second air hole; the first standby hole and the second standby hole are plugged with plugs for preventing air and dust from entering the cylinder barrel.

The embodiment of the utility model provides a cylinder compares with prior art, and its beneficial effect lies in: the first dustproof ring is arranged on the inner wall of the first through hole, the second end cover is covered with the dustproof cover, dust and other sticky objects on the piston rod can be fully blocked, the dust and other sticky objects are prevented from entering the cylinder barrel and being attached to the inner wall of the cylinder barrel, the cylinder barrel is prevented from being worn and/or damaged along with the movement of the piston, the air tightness between the piston and the inner wall of the cylinder barrel is reduced, and finally the cylinder is insufficient in power and even scrapped; the anti-torsion capability of the cylinder is improved by arranging the cylinder body and the guide rod; the second dustproof ring is arranged on the inner wall of the cylinder body, so that dust or impurities on the guide rod can be fully blocked, the guide rod can be prevented from entering the cylinder body to cause abrasion to the inside of the cylinder body, or the guide rod is prevented from being blocked due to the fact that the impurities or the dust are blocked between the cylinder body and the guide rod; the cylinder can be used in a dusty environment.

Furthermore, a connecting hole for a screw to pass through is formed in the dustproof cover, and a threaded hole matched with the connecting hole is formed in the cylinder body; the dustproof cover is fixedly connected with the cylinder body through a screw, and first sealant is filled in the connecting hole, the threaded hole and the fit clearance of the screw. Adopt the screw to fix shield and cylinder body, be convenient for installation and dismantlement. The filled first sealant can prevent dust from entering the barrel or the cylinder through the connecting hole and the threaded hole.

Furthermore, a concave cavity which is communicated with the cylinder body and is used for the guide rod to extend into is also formed in the dustproof cover; the dustproof cover is attached to one end of the barrel body and sealed through second sealant. Set up the flexible demand that the cavity is used for holding the guide arm, sealed through the second is sealed to be in with the cavity with the connection of barrel is sealed, can avoid impurity such as dust to get into the barrel inner wall from the second end, causes the wearing and tearing to guide arm and/or barrel.

Furthermore, the dust cover is provided with a second through hole communicated with the cavity, and a filter block is fixedly arranged in the second through hole. Specifically, the filter block is made of a filter material which has a gap and is air-permeable. The second through hole is formed, so that the air pressure in the cylinder is not changed in the movement process of the guide rod. The vacuum phenomenon in the cylinder body is avoided so as to limit the motion of the guide rod; and the filter block arranged on the second through hole can reduce the abrasion of the guide rod and/or the cylinder body caused by the impurities such as dust and the like entering the inner wall of the cylinder body from the second end.

Furthermore, a first annular groove for the first dustproof ring to be clamped into is formed in the inner wall of the first through hole; and a second annular groove for the second dustproof ring to be clamped into is formed in the inner wall of the cylinder body. The first dust ring and the second dust ring can be better fixed by arranging the first annular groove and the second annular groove, and the dust ring has the advantages of simple structure, practicality and reliability.

Further, the second annular groove is located at one end, far away from the dust cover, of the barrel. With the one end of second ring groove setting at the barrel, and this end is kept away from the shield, through shield and second ring groove respectively to setting up the both ends at the barrel, can effectively block impurity such as dust from the inside that gets into the barrel.

Furthermore, the number of the cylinder bodies is two, and the cylinder body is positioned between the two cylinder bodies; the guide arm the second annular the second dust ring and the quantity of cavity is two, and two the guide arm, two the second annular, two the second dust ring and two the cavity is equallyd divide and is do not set up corresponding two on the barrel. Set up two barrels, two guide arm, two second annular, two second dust ring and two the cavity corresponds the both ends of distributing at the cylinder body for the moment of torsion that the thrust of piston rod received reduces, can improve the antitorque commentaries on classics ability of cylinder simultaneously.

Further, the first end cover is sealed with the cylinder barrel through a first sealing ring, and the piston rod is sealed with the first through hole through a second sealing ring; the second end cover is sealed with the cylinder barrel through a third sealing ring. The cylinder barrel is sealed through the corresponding sealing ring to form a closed cavity, leakage of the cylinder is reduced, and working efficiency of the cylinder is improved. Specifically, a first limiting groove and a second limiting groove which are used for accommodating a first sealing ring and a third sealing ring respectively are formed in the inner wall of the cylinder barrel; the first sealing ring and the third sealing ring are clamped in corresponding limiting grooves through limiting clamp springs; the second sealing ring is positioned in the first ring groove.

Further, the cylinder body and the cylinder body are an integrally formed part. The cylinder is integrally formed, so that the integrity and the connection stability of the cylinder can be improved.

Furthermore, the piston rod and the guide rod are fixedly connected with the end plate through bolts. The piston rod and the guide rod are fixedly connected with the end plate through bolts, so that the end plate can be conveniently installed and replaced. Specifically, the end plate is fixed to one end of the piston rod away from the piston, and the end plate is fixed to one end of the guide rod outside the cylinder.

Furthermore, a bearing used for supporting the guide rod and assisting the guide rod to slide is arranged in the cylinder body. The guide rod can slide along the extending direction of the cylinder body conveniently, and the friction force between the guide rod and the cylinder body is reduced.

Drawings

FIG. 1 is a schematic view of a cylinder according to an embodiment of the present invention;

FIG. 2 is a sectional view of a cylinder according to an embodiment of the present invention;

fig. 3 is an enlarged view of the embodiment of the present invention at a in fig. 2;

fig. 4 is an enlarged view of the embodiment of the present invention at B in fig. 2;

in the figure, 1, a cylinder body; 11. a cylinder barrel; 12. a first air hole; 13. a second air hole; 14. a plug; 2. a first end cap; 21. a first through hole; 22. a first ring groove; 23. a first seal ring; 24. a second seal ring; 25. a limiting clamp spring; 26. a clamp spring; 3. a second dust ring; 4. a piston rod 41 and a piston; 5. a guide bar; 6. a barrel; 61. a second ring groove; 62. a bearing; 7. an end plate; 8. a first dust ring; 9. a dust cover; 91. a concave cavity; 92. a second through hole; 10. a second end cap; 101. and a third sealing ring.

Detailed Description

The following detailed description of the embodiments of the present invention is made with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be taken as limiting the present invention. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

As shown in fig. 1 to 4, a cylinder according to a preferred embodiment of the present invention includes: the cylinder comprises a cylinder body 1, a first end cover 2, a first dust ring 8, a second dust ring 3, a second end cover 10, a cylinder body 6, a guide rod 5, an end plate 7 and a dust cover 9; the cylinder body 1 is provided with a cylinder barrel 11 extending along a preset linear direction, a piston rod 4 inserted in the cylinder barrel 11 and capable of stretching and moving along the preset linear direction, and a piston 41 positioned in the cylinder barrel 11 and fixedly connected with one end of the piston rod 4; the cylinder 11 has a first end and a second end opposite to each other; the first end cover 2 is hermetically arranged in the cylinder barrel 11 close to the first end, and the first end cover 2 is provided with a first through hole 21 which is sleeved on the piston rod 4; the first dustproof ring 8 is sleeved on the piston rod 4 in a sliding manner, and the first dustproof ring 8 is connected with the inner wall of the first through hole 21 in a sealing manner; a second end cap 10 is sealingly mounted on said second end; the cylinder body 6 extends along the extension direction of the preset straight line and is fixedly connected to the cylinder body 1; the guide rod 5 is arranged in the cylinder body 6 in a penetrating way and can slide relative to the cylinder body 6; the guide rod 5 and the cylinder 6 are arranged in parallel; the end plate 7 is fixedly connected with the guide rod 5 and the piston rod 4; the dust cover 9 covers the second end cover 10 and is fixedly connected with the cylinder body 1; the dust cap 9 also covers the end of the barrel 6 adjacent the second end cap 10.

Wherein, first dust ring 8 and second dust ring 3 pass through jump ring 26 and press it in corresponding first annular 22 and second annular 61 to prevent that first dust ring 8 from droing from first annular 22 in the piston rod 4 course of motion, prevent that second dust ring 3 from droing from second annular 61 in guide arm 5 course of motion.

A first air hole 12 communicated with the cylinder barrel 11 is formed in the cylinder body 1 close to the first end cover 2, and a second air hole 13 communicated with the cylinder barrel 11 is formed in the cylinder body 1 close to the second end cover 10; the piston 41 is located between the first air hole 12 and the second air hole 13; the first air hole 12 and the second air hole 13 are used for being communicated with an external high-pressure air source; a first spare hole communicated with the cylinder barrel 11 is further formed in the cylinder body 1 near the first air hole 12, and a second spare hole communicated with the cylinder barrel 11 is further formed in the cylinder body 1 near the second air hole 13; plugs 14 are plugged in the first spare hole and the second spare hole to prevent air and dust from entering the cylinder 11.

The embodiment of the utility model provides a cylinder compares with prior art, and its beneficial effect lies in: the first dust ring 8 is arranged on the inner wall of the first through hole 21, the dust cover 9 covers the second end cover 10, dust and other sticky objects on the piston rod 4 can be fully blocked, the dust and other sticky objects are prevented from entering the cylinder 11, the dust is prevented from being attached to the inner wall of the cylinder 11, the abrasion of the cylinder 11 and/or the damage to the piston 41 along with the movement of the piston 41 are avoided, the air tightness between the piston 41 and the inner wall of the cylinder 11 is reduced, finally, the power of the cylinder is insufficient, and even scrapped, the dust cover 9 covers one end of the cylinder 6, the dust or impurities on the guide rod 5 can be fully blocked, the dust or impurities are prevented from entering the cylinder 6, the abrasion inside the cylinder 6 is caused, or the blocking condition of the guide rod 5 caused by the impurities or dust being clamped between the cylinder 6 and the guide rod 5 is avoided; the torsion resistance of the cylinder is improved by arranging the cylinder body 6 and the guide rod 5; the second dust ring 3 is arranged on the inner wall of the cylinder 6, so that dust or impurities on the guide rod 5 can be fully blocked, the dust or the impurities can be prevented from entering the cylinder 6 to cause abrasion to the inside of the cylinder 6, or the guide rod 5 is prevented from being blocked due to the impurities or the dust being clamped between the cylinder 6 and the guide rod 5; the cylinder can be used in a dusty environment.

In one embodiment, the dust cover 9 is provided with a connecting hole for a screw to pass through, and the cylinder body 1 is provided with a threaded hole matched with the connecting hole; the dust cover 9 is fixedly connected with the cylinder body 1 through screws, and first sealant is filled in the fit clearance between the connecting holes and the screw holes and between the connecting holes and the screws. Adopt the screw to fix shield 9 and cylinder body 1, be convenient for installation and dismantlement. The filled first sealant can prevent dust from entering the cylinder 6 or the cylinder 11 through the connecting holes and the threaded holes.

In one embodiment, the dust cover 9 is further provided with a cavity 91 which is communicated with the cylinder 6 and is used for the guide rod 5 to extend into; the dust cover 9 is attached to one end of the barrel 6 and sealed through second sealant. Set up cavity 91 and be used for holding the flexible demand of guide arm 5, sealed firmly being connected cavity 91 and barrel 6 through sealed glue of second, can avoid impurity such as dust to get into the inner wall of barrel 6 from the second end, cause the wearing and tearing to guide arm 5 and/or barrel 6.

In one embodiment, the dust cover 9 is provided with a second through hole 92 communicating with the cavity 91, and the second through hole 92 is communicated with a filter block. The second through hole 92 is formed to enable the air pressure in the cylinder 6 to be constant during the movement of the guide rod 5. The phenomenon of vacuum in the cylinder 6 is avoided, so that the guide rod 5 is limited to move the inner wall of the cylinder 6, and the guide rod 5 and/or the cylinder 6 are/is abraded.

In one embodiment, the inner wall of the first through hole 21 is provided with a first ring groove 22 for the first dust ring 8 to be clamped in; and a second annular groove 61 for installing the second dustproof ring 3 is formed in the inner wall of the cylinder 6. The first annular groove 22 and the second annular groove 61 are arranged to better fix the first dust ring 8 and the second dust ring 3, and the dust ring has a simple structure and is practical and reliable.

In one embodiment, the second annular groove 61 is located at an end of the barrel 6 remote from the dust cap 9. With the setting of second annular 61 in the one end of barrel 6, and this end is kept away from shield 9, through shield 9 and second annular 61 respectively to the both ends of setting at barrel 6, can effectively block impurity such as dust from the inside that gets into barrel 6.

In one embodiment, the number of the cylinders 6 is two, and the cylinder body 1 is located between the two cylinders 6; the number of the guide rods 5, the second ring grooves 61, the second dust rings 3 and the cavities 91 is two, and the two guide rods 5, the two second ring grooves 61, the two second dust rings 3 and the two cavities 91 are respectively arranged on the two corresponding cylinders 6. Set up two barrels 6, two guide arms 5, two second annular 61, two second dust rings 3 and two cavities 91, correspond the both ends of distributing at cylinder body 1 for the moment of torsion that the thrust of piston rod 4 received reduces, can improve the antitorque commentaries on classics ability of cylinder simultaneously.

In one embodiment, the first end cap 2 is sealed with the cylinder tube 11 by a first sealing ring 23, and the piston rod 4 is sealed with the first through hole 21 by a second sealing ring 24; the second end cap 10 is sealed to the cylinder 11 by a third seal 101. The cylinder barrel 11 is sealed through the corresponding sealing ring to form a closed chamber, leakage of the cylinder is reduced, and working efficiency of the cylinder is improved. Specifically, a first limit groove and a second limit groove for accommodating the first seal ring 23 and the third seal ring 101 are arranged on the inner wall of the cylinder 11; the first sealing ring 23 and the third sealing ring 101 are clamped in corresponding limiting grooves through a limiting clamp spring 25; a second seal ring 24 is positioned in the first ring groove 22.

In one embodiment, the cylinder body 1 and the cylinder body 6 are an integrally formed part. The cylinder is integrally formed, so that the integrity and the connection stability of the cylinder can be improved.

In one embodiment, the piston rod 4 and the guide rod 5 are fixedly connected to the end plate 7 by bolts. The piston rod 4 and the guide rod 5 are fixedly connected with the end plate 7 through bolts, so that the end plate 7 can be conveniently installed and replaced. Specifically, the end plate 7 is fixed to the end of the piston rod 4 remote from the piston, and the end plate 7 is fixed to the end of the guide rod 5 outside the cylinder 6.

In one embodiment, a bearing 62 for supporting the guide bar 5 and assisting the guide bar 5 to slide is provided in the cylinder 6. The guide rod 5 can slide along the extending direction of the cylinder 6 conveniently, and the friction force between the guide rod 5 and the cylinder 6 is reduced.

To sum up, the embodiment of the utility model provides a cylinder, it is through setting up first dust ring 8 on first through-hole 21 inner wall, can be abundant stop the sticky thing such as dust on the piston rod, avoid it to get into the inside of cylinder 11, and then get into in the cylinder 11 of cylinder body 1, and adhere to on the inner wall of cylinder 11, along with the motion of 4 piston 41 of piston rod can cause the wearing and tearing of cylinder 11 and/or piston 41 to damage, the gas tightness that has reduceed piston 41 and 11 inner walls of cylinder reduces, finally, lead to cylinder power not enough, scrap even. Set up second dust ring 3 at the 6 inner walls of barrel, can be abundant stop impurity such as dust on the guide arm 5, avoid it to get into in the barrel 6, cause the wearing and tearing to the barrel 6 inside, perhaps avoided because impurity or dust card lead to the fact between barrel 6 and guide arm 5 block up the condition. The dustproof effect of this cylinder is good, and through setting up barrel 6 and guide arm 5, has improved the antitorque commentaries on classics ability of this cylinder. The second dustproof ring 3 is arranged on the inner wall of the cylinder 6, so that dust or impurities on the guide rod 5 can be fully blocked, the dust or the impurities can be prevented from entering the cylinder 6 to cause abrasion to the inside of the cylinder 6, or the guide rod 5 is prevented from being blocked due to the impurities or the dust being clamped between the cylinder 6 and the guide rod 5; the cylinder can be used in a dusty environment.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and replacements can be made without departing from the technical principle of the present invention, and these modifications and replacements should also be regarded as the protection scope of the present invention.

Claims (10)

1. A cylinder, comprising:

the cylinder comprises a cylinder body (1) and a piston, wherein the cylinder body (1) is provided with a cylinder barrel (11) extending along a preset linear direction, a piston rod (4) inserted into the cylinder barrel (11) and capable of stretching and moving along a preset linear direction, and the piston (41) is positioned in the cylinder barrel and fixedly connected with one end of the piston rod; the cylinder barrel (11) is provided with a first end and a second end which are opposite;

the first end cover (2) is hermetically arranged in the cylinder barrel (11) close to the first end, and the first end cover (2) is provided with a first through hole (21) sleeved on the piston rod (4);

the first dust ring (8) is sleeved on the piston rod (4) in a sliding manner, and the first dust ring (8) is connected with the inner wall of the first through hole (21) in a sealing manner;

a second end cap (10) sealingly mounted on the second end;

the cylinder body (6) extends along the extension direction of a preset straight line and is fixedly connected to the cylinder body (1);

the guide rod (5) penetrates through the cylinder body (6) and can slide relative to the cylinder body (6);

the second dust ring (3) is sleeved on the guide rod (5) in a sliding manner, and the second dust ring (3) is fixedly connected with the inner wall of the cylinder body (6);

the end plate (7) is fixedly connected with the guide rod (5) and the piston rod (4);

the dustproof cover (9) covers the second end cover (10) and is fixedly connected with the cylinder body (1); the dustproof cover (9) also covers one end of the cylinder body (6) close to the second end cover (10).

2. The cylinder according to claim 1, characterized in that the dust cover (9) is provided with a connecting hole for a screw to pass through, and the cylinder body (1) is provided with a threaded hole matched with the connecting hole; the dust cover (9) is fixedly connected with the cylinder body (1) through screws, and first sealant is filled in the fit clearance between the connecting hole and the screw.

3. The cylinder according to claim 2, wherein the dust cover (9) is further provided with a cavity (91) which is communicated with the cylinder body (6) and into which the guide rod (5) extends; the dustproof cover (9) is attached to one end of the cylinder body (6) and sealed through second sealant.

4. A cylinder according to claim 3, wherein the dust cover (9) is provided with a second through hole (92) communicating with the cavity (91), and a filter block is fixedly arranged in the second through hole (92).

5. A cylinder according to claim 3, wherein the inner wall of the first through hole (21) is provided with a first ring groove (22) for the first dust ring (8) to be clamped in; and a second annular groove (61) for the second dustproof ring (3) to be clamped in is formed in the inner wall of the cylinder body (6).

6. A cylinder according to claim 5, characterized in that the second ring groove (61) is located at the end of the cylinder (6) remote from the dust cap (9).

7. Cylinder according to claim 6, wherein the number of cylinders (6) is two and the cylinder body (1) is located between two cylinders (6); the number of the guide rods (5), the second annular grooves (61), the second dust rings (3) and the cavities (91) is two, and the two guide rods (5), the two second annular grooves (61), the two second dust rings (3) and the two cavities (91) are equally divided and respectively arranged on the two corresponding cylinder bodies (6).

8. A cylinder according to claim 1, characterized in that the end plate (7) is bolted to the guide rod (5) and that the end plate (7) is bolted to the guide rod (5).

9. The cylinder according to any of the claims 1 to 8, wherein the first end cap (2) is sealed with the cylinder barrel (11) by a first sealing ring (23), and the piston rod (4) is sealed with the first through hole (21) by a second sealing ring (24); the second end cover (10) is sealed with the cylinder barrel (11) through a third sealing ring (101).

10. A cylinder according to claim 9, characterized in that the cylinder body (1) and the cylinder body (6) are one-piece.

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