CN210509791U

CN210509791U - Hydraulic oil cylinder

Info

Publication number: CN210509791U
Application number: CN201920921324.7U
Authority: CN
Inventors: 蔡跃波
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-06-19
Filing date: 2019-06-19
Publication date: 2020-05-12
Anticipated expiration: 2029-06-19

Abstract

The utility model discloses a hydraulic cylinder, including front end housing, rear end cap, cylinder, piston ring and piston rod, its characterized in that: the front end of the cylinder barrel is buckled and pressed with the front end cover, the dustproof copper ring is installed on the inner surface of the front end cover, the dustproof sealing ring is installed at the end opening of the inner side of the dustproof copper ring, the dustproof sealing ring is connected with the opposite surface of the dustproof copper ring and is provided with the U-shaped sealing ring, the front end cover is provided with the oil return port, the first positioning steel ball is installed at the outer surface of the end opening of the front end cover, the other end of the cylinder barrel is buckled and pressed with the rear end cover, the front cylinder cover is used for effectively preventing foreign matters from entering and oil in the cylinder body from overflowing, the concentric guiding effect of the piston rod and the cylinder body is ensured, and the problems of leakage, creeping and insufficient thrust inside and outside the oil cylinder are solved through the mutual matching of the structures of the front end cover, the cylinder barrel, the rear end cover, the dustproof copper ring, the production efficiency is improved.

Description

Hydraulic oil cylinder

Technical Field

The utility model relates to a hydro-cylinder technical field specifically is hydraulic cylinder.

Background

At present, the common faults of the hydraulic oil cylinder mainly include internal leakage, creeping and insufficient thrust.

The leakage in the oil cylinder occurs at two positions, one is the transition position of the piston rod and the piston, and the other is the inner wall of the piston and the cylinder barrel.

The oil cylinder crawling is generated in low-speed operation. The main reason is that the air accumulated in the oil cylinder is not removed. In addition, excessive or uneven mechanical friction can also cause creep. If the piston and the piston rod are not concentric, the whole length or the part of the piston rod is bent, the linearity of a cylinder hole is poor, a cylinder body is drum-shaped or has larger taper, the thin finish degree in the cylinder is reduced or galling is generated, the installation precision of the oil cylinder is out of tolerance, the screw caps at two ends of the piston rod are screwed too tightly to cause poor concentricity, the oil seal is screwed too tightly to cause excessive friction force and the like, the creeping can be caused.

The reasons for insufficient thrust, reduced speed or immobility of the hydraulic oil cylinder include that the fit clearance between the oil cylinder and the piston is too small or the 0-shaped sealing groove on the piston is not concentric with the piston, when oil seals at two ends of the oil cylinder are arranged, the sealing ring is not in a right position K, and the compression is too large on one side, so that the piston is not strong and the friction resistance is too large; the friction resistance is too large due to the bending of the piston rod or the over-tight oil seal at the two ends of the piston rod; the oil liquid contains excessive impurities, so that the piston of the oil cylinder is blocked or the friction force is too large, and the like. These causes not only increase the idling pressure and reduce the effective traction of the cylinder, but also cause the cylinder to jam in severe cases.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

Not enough to prior art, the utility model provides a hydraulic cylinder possesses simple structurally efficient advantage, has solved current hydraulic cylinder equipment and has prevented that the hydro-cylinder is inside and outside to reveal, creep, the not enough scheduling problem of thrust in the job scene.

(II) technical scheme

In order to achieve the above object, the utility model provides a following technical scheme: the hydraulic cylinder comprises a front end cover, a rear end cover, a cylinder barrel, a piston ring and a piston rod, wherein the front end of the cylinder barrel is buckled and pressed with the front end cover, a dustproof copper ring is installed on the inner surface of the front end cover, a dustproof sealing ring is installed at the position of an inner side port of the dustproof copper ring, a U-shaped sealing ring is installed on the opposite surface of the dustproof sealing ring connected with the dustproof copper ring, an oil return port is formed in the front end port, a first positioning steel ball is installed at the position of the outer surface of a port of the front end cover, the rear end of the cylinder barrel is buckled and pressed with the rear end cover, an oil inlet is formed in the outer surface of the rear end cover, a second positioning steel ball is installed on the outer surface of the port of the rear end cover, a second static sealing O-shaped ring is installed on the inner surface of two ports of the cylinder barrel, the piston ring is characterized in that a piston ring Gelai sealing ring is mounted in the middle of the outer surface of the piston ring, one end of the piston ring is connected with a fastening screw, and the piston ring is in threaded connection with the piston rod through the fastening screw.

Preferably, one end of the piston rod is sleeved with a second sealing O-shaped ring and is fixedly connected with the fastening screw in a threaded manner, and the other end of the piston rod is in a sealing state.

Preferably, both ends of the cylinder barrel are buckled and pressed with the front end cover and the rear end cover.

Preferably, the piston ring gelai sealing ring is made of a Tereburg sealing ring material.

(III) advantageous effects

Compared with the prior art, the utility model provides a hydraulic cylinder is equipped with, possesses following beneficial effect:

this hydraulic cylinder, including front end housing, rear end housing, cylinder, piston ring and piston rod, the front end and the front end housing of cylinder are withheld and are connected, the internally surface mounting of front end housing has dustproof copper ring, the opposite face that dustproof copper ring is connected to dustproof sealing ring installs U type sealing washer, prevents to have spilling over of pole intracavity hydraulic oil, dustproof sealing washer is installed to the medial extremity department of dustproof copper ring, adopts the withholding mounting means. The joint of the piston ring and the piston rod is sealed by a first static seal O-shaped ring, and the piston rod and the inner wall of the cylinder barrel are sealed by a Tereburg seal Glare ring to ensure the wear resistance and reliability; the front and rear cylinder covers are connected with the cylinder barrel in a buckling mode, so that the phenomenon of front and rear non-concentricity caused by a threaded connection mode is prevented; the front cylinder cover effectively prevents foreign matters from entering and ensures the concentric guiding function of the piston rod and the cylinder body by using the dustproof sealing ring and the U-shaped ring. Compared with a common hydraulic oil cylinder structure, the structure is simple and efficient, especially when a special installation auxiliary tool is used in the installation process, compared with the thread type installation working time, the structure can be reduced by more than half, and the production efficiency is improved.

Drawings

FIG. 1 is a schematic perspective view of the present invention;

FIG. 2 is a schematic sectional view of the present invention;

in the figure: the oil cylinder comprises a front end cover 1, a cylinder barrel 2, a rear end cover 3, a dustproof copper ring 4, a piston ring 5, a piston rod 6, a fastening screw 7, a second positioning steel ball 8, a second static sealing O-shaped ring 9, a first static sealing O-shaped ring 10, a piston ring Gelai sealing ring 11, a U-shaped sealing ring 12, a dustproof sealing ring 13, a first positioning steel ball 14, an oil return port 15, an oil return port 16 and an oil inlet.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element to be referred must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted", "provided", "connected", and the like are to be construed broadly, such as "connected", which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1-2, the hydraulic cylinder includes a front end cap 1, a rear end cap 3, a cylinder 2, a piston ring 5 and a piston rod 6, and is characterized in that: the front end of the cylinder barrel 2 is buckled and pressed with the front end cover 1, the dustproof copper ring 4 is installed on the inner surface of the front end cover 1, the dustproof sealing ring 13 is installed at the end opening of the inner side of the dustproof copper ring 4, the U-shaped sealing ring 12 is installed on the opposite surface, connected with the dustproof copper ring 4, of the dustproof sealing ring 13, the overflow of hydraulic oil in a rod cavity is prevented, the dustproof sealing ring 13 and the U-shaped sealing ring 12 are used at the front cylinder cover 1 to effectively prevent foreign matters from entering and ensure the concentric guiding effect of the piston rod 6 and the cylinder barrel 2, the dustproof sealing ring 13 is installed at the end opening of the inner side of the dustproof copper ring 4, a buckling and pressing installation mode is adopted, the joint of the piston ring 5 and the piston rod 6 is sealed by a first static sealing O-shaped ring, the piston rod 6 and the inner wall of the cylinder barrel 2 adopt a Tereburg sealing GREEN ring to ensure the wear resistance, the rear end of cylinder 2 withholds with rear end housing 3 and is connected, the surface of rear end housing 3 is provided with oil inlet 16, the port surface mounting of rear end housing 3 has second location steel ball 8, the internal surface of 2 both ends mouths of cylinder all installs second static seal O type circle 9, the inside cover of cylinder 2 has piston rod 6, the one end and the piston ring 5 of piston rod 6 cup joint, and the port department of piston ring 5 and the cup joint of piston rod 6 installs first static seal O type circle 10, and piston ring Gelai sealing washer 11 adopts the material of the seal ring of the Teruibao, the surface mid-mounting of piston ring 5 has piston ring Gelai sealing washer 11, the one end and the fastening screw 7 interconnect of piston ring 5, and piston ring 5 and piston rod 6 pass through fastening screw 7 threaded connection, the one end of piston rod 6 cup joints second seal O type circle 9 and fixes with fastening screw 7 threaded connection, the other end of the piston rod 6 is in a sealing state, the two ends of the cylinder barrel 2 are connected with the front end cover 1 and the rear end cover 3 in a buckling mode, the front cylinder cover and the rear cylinder cover are connected with the cylinder barrel 2 in a buckling mode, the phenomenon of front and rear non-concentricity caused by a threaded connection mode is prevented, meanwhile, a special installation auxiliary tool is used in an installation process, compared with the threaded installation time, the installation time can be reduced by more than half, and the production efficiency is improved.

In summary, the following steps: this hydraulic cylinder, through front end housing 1, cylinder 2, rear end housing 3, dustproof copper ring 4, piston ring 5, piston rod 6, fastening screw 7, second location steel ball 8, second static seal O type circle 9, first static seal O type circle 10, piston ring gelai sealing washer 11, U type sealing washer 12, dustproof sealing washer 13, first location steel ball 14, oil return opening 15, oil inlet 16's cooperation is used, the problem of current hydraulic cylinder equipment in the job scene prevents interior revealing, creep, the not enough demand of thrust is solved, and use special installation appurtenance on the mounting process, can reduce more than half with screw thread formula installation man-hour and compare, production efficiency has been improved greatly.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. Hydraulic cylinder, including front end housing (1), rear end cap (3), cylinder (2), piston ring (5) and piston rod (6), its characterized in that: the front end of cylinder (2) withholds with front end housing (1) and is connected, the interior surface mounting of front end housing (1) has dustproof copper ring (4), the medial extremity port department of dustproof copper ring (4) installs dust seal circle (13), U type sealing washer (12) are installed to the opposite face that dust seal circle (13) are connected dustproof copper ring (4), prevent to have the spill over of pole intracavity hydraulic oil, front end housing (1) is provided with oil return opening (15), first location steel ball (14) are installed to the port surface department of front end housing (1), the other end and rear end housing (3) of cylinder (2) withhold and be connected, the surface of rear end housing (3) is provided with oil inlet (16), the port surface mounting of rear end housing (3) has second location steel ball (8), the interior surface of cylinder (2) both ends mouth all installs second static seal O type circle (9), the inside cover of cylinder (2) has piston rod (6), the one end and the piston ring (5) of piston rod (6) cup joint, and piston ring (5) and the port department of cup jointing of piston rod (6) install a static seal O type circle (10), the surface mid-mounting of piston ring (5) has piston ring check lai sealing washer (11), the one end and fastening screw (7) interconnect of piston ring (5), and piston ring (5) and piston rod (6) pass through fastening screw (7) threaded connection.

2. A hydraulic ram according to claim 1 wherein: one end of the piston rod (6) is sleeved with a second static sealing O-shaped ring (9) and is fixedly connected with the fastening screw (7) in a threaded manner, and the other end of the piston rod (6) is in a sealing state.

3. A hydraulic ram according to claim 1 wherein: and the two ends of the cylinder barrel (2) are buckled and pressed with the front end cover (1) and the rear end cover (3) to be connected.

4. A hydraulic ram according to claim 1 wherein: the piston ring Gelai sealing ring (11) is made of a Tereburg sealing ring.