CN219509936U - External protective structure of hydraulic cylinder - Google Patents

Abstract

The utility model discloses an external protection structure of a hydraulic oil cylinder, which comprises a cylinder body, wherein a piston rod is arranged in the cylinder body, one end of the piston rod positioned in the cylinder body is provided with a piston, an opening at one end of the cylinder body is provided with a guide sleeve, one end of the piston rod penetrates through the center of the guide sleeve to be connected with an earring, a connecting sleeve is fixedly arranged at the joint of the earring and the piston rod, and a telescopic dust cover is arranged between the guide sleeve and the connecting sleeve. The cylinder is reasonable in structural design, the piston rod extending out of the cylinder body is protected through the dustproof sleeve, dust and other impurities in the external environment are prevented from falling on the piston rod, pollution of hydraulic oil in the cylinder body is avoided, the dustproof sleeve and the piston rod can be effectively prevented from being attached together through the telescopic rod, movement of the piston rod is interfered, normal use of the hydraulic cylinder is ensured, and the service life of the hydraulic cylinder is prolonged.

Description

External protective structure of hydraulic cylinder

Technical Field

The utility model belongs to the technical field of hydraulic cylinders, and particularly relates to an external protection structure of a hydraulic cylinder.

Background

The hydraulic cylinder is a hydraulic actuating element which converts hydraulic energy into mechanical energy and performs linear reciprocating motion. In the use process of the hydraulic cylinder, the piston rod needs to extend out of the cylinder body frequently to be in contact with the outside, the pollution of the outside environment is easy, when dust or other sundries in the environment fall on the piston rod, the dust or other sundries possibly enter the cylinder body along the piston rod to pollute the hydraulic oil, the service life of the hydraulic oil is shortened, and the normal use of the hydraulic cylinder is influenced.

Disclosure of Invention

In order to solve the problems, the utility model provides an external protection structure of a hydraulic cylinder.

The utility model is realized in the following way: the utility model provides an external protective structure of hydraulic cylinder, includes the cylinder body, be provided with the piston rod in the cylinder body, be located the one end of piston rod in the cylinder body is provided with the piston, the opening part of cylinder body one end is provided with the uide bushing, and the piston rod moves along the uide bushing, the center that the uide bushing was passed to the one end of piston rod is connected with the earring, the fixed coupling cover that is provided with in junction of earring and piston rod, be provided with telescopic dust cover between uide bushing and the coupling cover, protect the piston rod that stretches out from the cylinder body through the dust cover, prevent debris such as dust in the external environment from falling on the piston rod, cause the pollution of cylinder body hydraulic oil, first annular has been seted up to the outer fringe of coupling cover, the second annular has been seted up to the outer fringe of coupling cover, in first annular and the second annular are located to the cover both ends cover, be provided with the pipe clamp in first annular and the second annular, firmly reliable connection together with uide bushing and coupling cover and dust cover through the pipe clamp.

Preferably, the pipe clamp comprises a first clamp body and a second clamp body, one ends of the first clamp body and the second clamp body are hinged together, a first threaded hole is formed in the other end of the first clamp body, a second threaded hole is formed in the other end of the second clamp body, the positions of the first threaded hole and the second threaded hole correspond to each other, bolts are arranged through the first threaded hole and the second threaded hole, when two ends of the dust cover are sleeved in the first annular groove and the second annular groove, the opened pipe clamp is placed in the first annular groove and the second annular groove, the pipe clamp is closed, the bolts penetrate through the first threaded hole and the second threaded hole and are screwed tightly, and accordingly the guide sleeve, the connecting sleeve and the dust cover are firmly and reliably connected together through the pipe clamp.

Preferably, a plurality of telescopic rods are arranged between the guide sleeve and the connecting sleeve, the telescopic amplitude of each telescopic rod is larger than the amplitude of the reciprocating motion of the piston rod, the dustproof sleeve is supported by the telescopic rods, and the dustproof sleeve and the piston rod are prevented from being attached together.

Preferably, one end of the telescopic rod is provided with a first ball body, the other end of the telescopic rod is provided with a second ball body, a plurality of first through holes and first ball grooves which are communicated are uniformly formed in the outer edge of the end part of the guide sleeve, the first ball body is arranged in the first ball groove, the diameter of the first ball body is larger than the aperture of the first through hole, reliable connection of the telescopic rod and the guide sleeve is guaranteed, the first ball body is prevented from being separated from the first ball groove, a plurality of second through holes and second ball grooves which are communicated are uniformly formed in the outer edge of the end part of the connecting sleeve, the diameter of the second ball body is larger than the aperture of the second through holes, reliable connection of the telescopic rod and the connecting sleeve is guaranteed, and the second ball body is prevented from being separated from the second ball grooves.

Preferably, the openings of the first through hole and the second through hole are trapezoid, the opening direction of the first through hole is the same as the radial line direction of the guide sleeve, the opening direction of the second through hole is the same as the radial line direction of the connecting sleeve, and the angle of the telescopic rod is automatically adjusted along with the movement of the piston rod, so that the reliable telescopic of the telescopic rod is ensured.

The beneficial effects of the utility model are as follows: the cylinder is reasonable in structural design, the piston rod extending out of the cylinder body is protected through the dustproof sleeve, dust and other impurities in the external environment are prevented from falling on the piston rod, pollution of hydraulic oil in the cylinder body is avoided, the dustproof sleeve and the piston rod can be effectively prevented from being attached together through the telescopic rod, movement of the piston rod is interfered, normal use of the hydraulic cylinder is ensured, and the service life of the hydraulic cylinder is prolonged.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is an enlarged schematic view of the structure of the present utility model;

FIG. 3 is a schematic view of the connection structure of the telescopic rod;

FIG. 4 is a schematic view of the connection structure of the telescopic rod and the coupling sleeve;

FIG. 5 is a schematic view of a pipe clamp;

in the figure: 1. a cylinder; 2. a piston rod; 3. a piston; 4. a guide sleeve; 5. ear rings; 6. a coupling sleeve; 7. a dust cover; 8. a first ring groove; 9. a second ring groove; 10. a pipe clamp; 11. a first clamp body; 12. a second clamp body; 13. a first threaded hole; 14. a second threaded hole; 15. a bolt; 16. a telescopic rod; 17. a first sphere; 18. a second sphere; 19. a first through hole; 20. a first ball groove; 21. a second through hole; 22. and a second ball groove.

Detailed Description

In order to make the technical solution of the present utility model more clearly understood, the present utility model will be further described with reference to the accompanying drawings.

An external protection structure of a hydraulic cylinder as shown in figures 1-5 comprises a cylinder body 1, wherein a piston rod 2 is arranged in the cylinder body 1, a piston 3 is arranged at one end of the piston rod 2 positioned in the cylinder body 1, a guide sleeve 4 is arranged at an opening at one end of the cylinder body 1, the piston rod 2 moves along the guide sleeve 4, one end of the piston rod 2 penetrates through the center of the guide sleeve 4 to be connected with an earring 5, a connecting sleeve 6 is fixedly arranged at the joint of the earring 5 and the piston rod 2, a telescopic dust-proof sleeve 7 is arranged between the guide sleeve 4 and the connecting sleeve 6, the piston rod 2 extending out of the cylinder body 1 is protected through the dust-proof sleeve 7, sundries such as dust in the external environment are prevented from falling on the piston rod 2, so that the pollution of hydraulic oil in the cylinder body 1 is caused, a first annular groove 8 is formed at the outer edge of the guide sleeve 4, a second annular groove 9 is formed at the outer edge of the connecting sleeve 6, the two ends of the dust cover 7 are sleeved in the first annular groove 8 and the second annular groove 9 to limit the positions of the two ends of the dust cover 7, a pipe clamp 10 is arranged in the first annular groove 8 and the second annular groove 9, the guide sleeve 4 and the connecting sleeve 6 are firmly and reliably connected with the dust cover 7 through the pipe clamp 10, the pipe clamp 10 comprises a first clamp body 11 and a second clamp body 12, one ends of the first clamp body 11 and the second clamp body 12 are hinged together, a first threaded hole 13 is arranged at the other end of the first clamp body 11, a second threaded hole 14 is arranged at the other end of the second clamp body 12, the positions of the first threaded hole 13 and the second threaded hole 14 correspond to each other, bolts 15 are arranged through the first threaded hole 13 and the second threaded hole 14, when the two ends of the dust cover 7 are sleeved in the first annular groove 8 and the second annular groove 9, the opened pipe clamp 10 is arranged in the first ring groove 8 and the second ring groove 9, the pipe clamp 10 is closed, the bolts 15 penetrate through the first threaded holes 13 and the second threaded holes 14 and are screwed tightly, so that the guide sleeve 4, the connecting sleeve 6 and the dust cover 7 are firmly and reliably connected together through the pipe clamp 10, four telescopic rods 16 are arranged between the guide sleeve 4 and the connecting sleeve 6, the dust cover 7 is supported through the telescopic rods 16 to prevent the dust cover 7 from being attached to the piston rod 2, one end of each telescopic rod 16 is provided with a first sphere 17, the other end of each telescopic rod 16 is provided with a second sphere 18, four communicated first through holes 19 and first sphere grooves 20 are uniformly formed in the outer edge of the end part of the guide sleeve 4, the diameters of the first spheres 17 are larger than the diameters of the first through holes 19, the reliable connection of the telescopic rods 16 and the guide sleeve 4 is ensured, and prevents the first sphere 17 from separating from the first sphere groove 20, four second through holes 21 and second sphere grooves 22 which are communicated are uniformly formed at the outer edge of the end part of the connecting sleeve 6, the second sphere 18 is arranged in the second sphere groove 22, the diameter of the second sphere 18 is larger than the aperture of the second through hole 21, the reliable connection between the telescopic rod 16 and the connecting sleeve 6 is ensured, the second sphere 18 is prevented from separating from the second sphere groove 22, when the piston rod 2 moves to the rightmost end, the distance between the first sphere groove 20 and the second sphere groove 22 is larger than the length of the telescopic rod 16 when the piston rod 2 is shortened to the rightmost end, the openings of the first through hole 19 and the second through hole 21 are trapezoid, the opening direction of the first through hole 19 is the same as the radial line direction of the guide sleeve 4, the opening direction of the second through hole 21 is the same as the radial line of the connecting sleeve 6, along with the movement of the piston rod 2, the angle of the telescopic rod 16 is automatically adjusted, and reliable extension and retraction of the telescopic rod 16 are ensured.

The foregoing description is only of the preferred embodiments of the utility model, and all changes and modifications that come within the meaning and range of equivalency of the structures, features and principles of the utility model are therefore intended to be embraced therein.

Claims (5)

1. The utility model provides an external protective structure of hydraulic cylinder, includes the cylinder body, be provided with the piston rod in the cylinder body, be located the one end of piston rod in the cylinder body is provided with the piston, the opening part of cylinder body one end is provided with the uide bushing, the center that the uide bushing was passed to the one end of piston rod is connected with the earring, its characterized in that, the fixed coupling cover that is provided with in junction of earring and piston rod, be provided with telescopic dust cover between uide bushing and the coupling cover, first annular has been seted up to the outer fringe of uide bushing, the second annular has been seted up to the outer fringe of coupling cover, in first annular and the second annular are located to dust cover both ends cover, be provided with the pipe clamp in first annular and the second annular.

2. The external protection structure of a hydraulic cylinder according to claim 1, wherein the pipe clamp comprises a first clamp body and a second clamp body, one ends of the first clamp body and the second clamp body are hinged together, a first threaded hole is formed in the other end of the first clamp body, a second threaded hole is formed in the other end of the second clamp body, the positions of the first threaded hole and the second threaded hole correspond to each other, and bolts are arranged through the first threaded hole and the second threaded hole.

3. The external protection structure of the hydraulic cylinder according to claim 1, wherein a plurality of telescopic rods are arranged between the guide sleeve and the connecting sleeve.

4. The external protection structure of a hydraulic cylinder according to claim 3, wherein a first sphere is arranged at one end of the telescopic rod, a second sphere is arranged at the other end of the telescopic rod, a plurality of first through holes and first ball grooves which are communicated are uniformly formed in the outer edge of the end part of the guide sleeve, the first sphere is arranged in the first ball groove, the diameter of the first sphere is larger than the aperture of the first through hole, a plurality of second through holes and second ball grooves which are communicated are uniformly formed in the outer edge of the end part of the connecting sleeve, and the diameter of the second sphere is larger than the aperture of the second through hole.

5. The external protection structure of the hydraulic cylinder according to claim 4, wherein openings of the first through hole and the second through hole are trapezoid, the opening direction of the first through hole is the same as the radial line direction of the guide sleeve, and the opening direction of the second through hole is the same as the radial line direction of the connecting sleeve.