CN218347693U - Floating buffering device of hydraulic cylinder - Google Patents

Abstract

The utility model discloses a hydraulic cylinder floating buffering device, the upper and lower ends of an outer cylinder body are respectively provided with a cylinder bottom cover and an upper end cover, the inner side of the cylinder bottom cover is provided with a first floating buffering mechanism, the inner part of the upper end cover is provided with a second floating buffering mechanism, the upper and lower ends outside the outer cylinder body are symmetrically provided with a liquid inlet and outlet, a piston telescopic rod is arranged in the outer cylinder body, a piston sleeve is arranged on the piston telescopic rod through a positioning ring, the bottom end of the piston telescopic rod is provided with a second-order buffering mechanism, and a buffering rubber sleeve is arranged on the piston telescopic rod at the upper end of the piston sleeve; the utility model discloses a high-efficient buffering is carried out in the impact that two sets of buffer gear that float produced when flexible to the piston telescopic link, has avoided the impact damage of cylinder bottom lid and upper end cover, has improved the life of pneumatic cylinder, carries out the second order buffering to the impact of cylinder bottom when simultaneously cooperating second order buffer gear to make the piston telescopic link retract, has avoided traditional cushion ring buffering effect poor and need frequently change the problem, and buffering effect is better, and the practicality is strong.

Description

Floating buffering device of hydraulic cylinder

Technical Field

The utility model relates to a pneumatic cylinder technical field especially relates to a pneumatic cylinder buffer that floats.

Background

The hydraulic cylinder is a hydraulic actuating element which converts hydraulic energy into mechanical energy through linear reciprocating motion (or swinging motion), can omit a speed reducing device when reciprocating, has no transmission clearance, not only moves stably, but also has simple structure and higher working efficiency, and along with the development of the society, the hydraulic cylinder is widely applied to hydraulic systems of various machines;

the inside buffer function that does not possess of present pneumatic cylinder, can produce the impact to cylinder bottom and cylinder cap when the piston removes, cause the damage to reduce pneumatic cylinder life, and to some inside most of buffering pneumatic cylinders cushion piston and cylinder bottom and cylinder cap through the buffering ring, buffering effect is not good, and the phenomenon of ageing inefficacy easily appears in the buffering ring, needs often to change, and is very troublesome, consequently, the utility model provides a pneumatic cylinder buffer that floats in order to solve the problem that exists among the prior art.

SUMMERY OF THE UTILITY MODEL

To the problem, the utility model aims to provide a pneumatic cylinder buffer that floats, the impact that this pneumatic cylinder buffer that floats produced when flexible to the piston telescopic link carries out high-efficient buffering, the impact damage of cylinder bottom lid and upper end cover has been avoided, the life of pneumatic cylinder has been improved, the impact to the cylinder bottom when cooperating second order buffer gear simultaneously and making the piston telescopic link retract carries out the second order buffering, the poor and frequent problem of changing of needs of traditional buffering ring buffering effect has been avoided, buffering effect is better.

For realizing the purpose of the utility model, the utility model discloses a following technical scheme realizes: the utility model provides a pneumatic cylinder buffer that floats, includes outer cylinder mechanism and piston rod mechanism, outer cylinder mechanism includes outer cylinder body, bottom of the cylinder lid, upper end cover, first buffer gear that floats, second buffer gear that floats and business turn over liquid mouth, outer cylinder body upper and lower extreme is equipped with bottom of the cylinder lid and upper end cover respectively, and bottom of the cylinder lid and upper end cover inboard are the recess form, bottom of the cylinder lid inboard is equipped with first buffer gear that floats, the inside second buffer gear that floats that is equipped with of upper end cover, first buffer gear that floats and second buffer gear that floats set up respectively in the recess, the end symmetry is equipped with business turn over liquid mouth about the outer cylinder body outside, business turn over liquid mouth intercommunication outside hydraulic conveying pipe, piston rod mechanism includes piston telescopic link, holding ring, piston cover, second order buffer gear and buffering gum cover, be equipped with the piston telescopic link in the outer cylinder body, be equipped with the piston cover through the holding ring on the piston telescopic link, the downside all is equipped with the holding ring on the piston cover, and the holding ring is connected with piston telescopic link, the piston telescopic link bottom is equipped with second buffer gear, be equipped with the buffering gum cover on the piston telescopic link.

The further improvement lies in that: the first floating buffer mechanism comprises guide rods, buffer plates, first springs and through holes, the guide rods are symmetrically arranged in the cylinder bottom cover, four groups of guide rods are symmetrically arranged, the buffer plates are arranged on the guide rods, the buffer plates are slidably connected with the guide rods, the diameters of the buffer plates are slightly smaller than the diameter of a groove of the cylinder bottom cover, the first springs are arranged between the lower portions of the buffer plates and the cylinder bottom cover, the through holes are symmetrically arranged on the buffer plates, and the through holes are annularly provided with multiple groups.

The further improvement is that: the floating buffer gear of second includes the guide post, removes upper cover, second spring and crashproof cushion, the symmetry is equipped with the guide post in the upper end cover, and the guide post symmetry is equipped with four groups, be equipped with on the guide post and remove the upper cover, remove upper cover and guide post sliding connection, the cover is equipped with the second spring on removing the guide post in the upper cover, it is equipped with crashproof cushion to remove the upper end face of covering, removes to cover and is equipped with the through hole, and the through hole diameter is the same between with the piston telescopic link, and guide bar and guide post tip all are equipped with spacing end cap, and removal upper cover is greater than the diameter of guide post and is less than the spacing end cap diameter of tip with the gliding through hole diameter of guide post.

The further improvement lies in that: second order buffer gear is including shrink groove, cushion column, third spring and buffering cushion, piston telescopic link bottom is equipped with the shrink groove, be equipped with the cushion column in the shrink groove, cushion column length slightly is greater than complete shrink groove degree of depth, be equipped with the third spring between cushion column and the shrink inslot portion, shrink tank bottom end is equipped with the buffering cushion.

The further improvement lies in that: the cylinder bottom cover and the upper end cover are hermetically installed with two end parts of the outer cylinder body through sealing rubber rings and screws, and the piston telescopic rod penetrates through a through hole in a moving sleeve cover in the second floating buffer mechanism and the upper end cover and is in sealing telescopic connection with the upper end cover and sealed through sealing rubber rings.

The utility model has the advantages that: the utility model discloses a high-efficient buffering is carried out in the impact that two sets of buffer gear that float produced when flexible to the piston telescopic link, has avoided the impact damage of cylinder bottom lid and upper end cover, has improved the life of pneumatic cylinder, carries out the second order buffering to the impact of cylinder bottom when cooperation second order buffer gear makes the piston telescopic link withdrawal simultaneously, has avoided traditional buffering ring buffering effect poor and need frequently change the problem, and the buffering effect is better, and the practicality is strong.

Drawings

Fig. 1 is a front sectional view of the present invention.

Fig. 2 is an enlarged view of the position A of the utility model.

Wherein: 1. an outer cylinder body; 2. a cylinder bottom cover; 3. an upper end cover; 4. a liquid inlet and outlet; 5. a piston telescopic rod; 6. a positioning ring; 7. a piston sleeve; 8. buffering the rubber sleeve; 9. a guide bar; 10. a buffer plate; 11. a first spring; 12. a through hole; 13. a guide post; 14. moving the sleeve cover; 15. a second spring; 16. an anti-collision rubber cushion; 17. a contraction groove; 18. a buffer column; 19. a third spring; 20. a cushion rubber pad; 21. sealing the rubber ring; 22. and (4) screws.

Detailed Description

In order to deepen the understanding of the present invention, the following embodiments will be combined to make the present invention do further details, and the present embodiment is only used for explaining the present invention, and does not constitute the limitation of the protection scope of the present invention.

According to fig. 1 and 2, this embodiment provides a hydraulic cylinder floating buffer device, including outer cylinder mechanism and piston rod mechanism, outer cylinder mechanism includes outer cylinder body 1, bottom of the cylinder 2, upper end cover 3, first buffer gear that floats, second buffer gear that floats and business turn over liquid mouth 4, outer cylinder body 1 upper and lower end is equipped with bottom of the cylinder 2 and upper end cover 3 respectively, bottom of the cylinder and upper end cover inboard are the recess form, 2 inboards of bottom of the cylinder are equipped with first buffer gear that floats, the inside second buffer gear that floats that is equipped with of upper end cover 3, first buffer gear that floats and second buffer gear that floats set up respectively in the recess, the end symmetry is equipped with business turn over liquid mouth 4 on the outer cylinder body 1 outside, business turn over liquid mouth intercommunication outside hydraulic delivery pipe, piston rod mechanism includes piston 5, holding ring 6, piston cover 7, second order buffer gear and cushion gum cover 8, be equipped with piston telescopic link 5 in the outer cylinder body 1, be equipped with piston telescopic link 7 on the piston telescopic link 5 through holding ring 6, the piston cover downside all is equipped with the holding ring and is connected with the holding ring, piston 5 is equipped with the integrated buffer gum cover 7 on the piston cover, the piston 5, the piston telescopic link is equipped with the buffer gum cover 8.

First buffer gear that floats includes guide bar 9, buffer board 10, first spring 11 and through-hole 12, the symmetry is equipped with guide bar 9 in the cylinder bottom lid 2, and the guide bar symmetry is equipped with four groups, be equipped with buffer board 10 on the guide bar 9, buffer board and guide bar sliding connection and buffer board diameter slightly are lighter than the recess diameter of cylinder bottom lid, be equipped with first spring 11 between buffer board 10 below and the cylinder bottom lid 2, the symmetry is equipped with through-hole 12 on the buffer board 10, and the through-hole is the annular and is equipped with the multiunit.

The unsteady buffer gear of second includes guide post 13, removal upper cover 14, second spring 15 and crashproof cushion 16, the symmetry is equipped with guide post 13 in the upper end cover 3, and the guide post symmetry is equipped with four groups, be equipped with on the guide post 13 and remove upper cover 14, remove upper cover and guide post sliding connection, the cover is equipped with second spring 15 on removing the guide post 13 in the upper cover 14, it is equipped with crashproof cushion 16 to remove upper end face of upper cover 14, is equipped with the through hole on the removal upper cover, and is the same between through hole diameter and the piston telescopic link, and guide bar and guide post tip all are equipped with spacing end cap, and the removal upper cover is greater than the diameter of guide post and is less than the spacing end cap diameter of tip with the gliding through hole diameter of guide post.

Second order buffer gear includes shrink groove 17, buffering post 18, third spring 19 and buffering cushion 20, 5 bottoms of piston telescopic link are equipped with shrink groove 17, be equipped with buffering post 18 in the shrink groove 17, buffering post length slightly is greater than complete shrink groove degree of depth, be equipped with third spring 19 between buffering post 18 and the shrink groove 17 inside, shrink groove 17 bottom is equipped with buffering cushion 20.

The cylinder bottom cover 2 and the upper end cover 3 are hermetically mounted with two end parts of the outer cylinder body 1 through a sealing rubber ring 21 and a screw 22, and the piston telescopic rod 5 penetrates through a through hole in a moving sleeve cover in the second floating buffer mechanism and the upper end cover 3 and is in sealed telescopic connection with the upper end cover 3 and sealed through a sealing rubber ring.

When the floating buffer device of the hydraulic cylinder is used, liquid is pumped from a liquid inlet and outlet at the lower end of an outer cylinder body, meanwhile, the liquid is pumped from the liquid inlet and outlet at the upper end of the outer cylinder body, a piston telescopic rod moves continuously and extends out, a buffer rubber sleeve on the piston telescopic rod is in contact with a movable sleeve cover and pushes the movable sleeve cover upwards, the liquid in the movable sleeve cover can be extruded from a through hole formed by a guide column and the movable sleeve cover in a sliding mode, and the liquid can provide reverse damping force for the movable sleeve cover due to the fact that the extrusion speed is lower than the pressure of the movable sleeve cover on the upper top, floating buffering is achieved by matching with the buffer rubber sleeve;

when the piston telescopic rod retracts, liquid is pumped into the liquid inlet and outlet at the upper end of the outer cylinder body, the liquid inlet and outlet at the lower end of the outer cylinder body pumps out the liquid, the piston sleeve drives the piston telescopic rod to move downwards, the buffer column in the second-order buffer mechanism contacts with the buffer plate firstly and buffers and retracts when the buffer column retracts completely, the extending end continuously supports against the buffer plate, the buffer plate moves downwards to compress the first spring at the moment, the liquid between the buffer plate and the groove of the cylinder bottom cover is extruded from the through hole in the compression process, the principle of moving the sleeve cover when the buffer column extends out is the same, the liquid realizes floating buffering for the reverse damping force of the buffer plate, the liquid inlet and outlet on the lower side are positioned between the piston sleeve and the buffer plate when the piston telescopic rod retracts completely, and the combined buffering effect is better.

The foregoing illustrates and describes the general principles, features and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (5)

1. The utility model provides a pneumatic cylinder buffer that floats which characterized in that: including outer cylinder mechanism and piston rod mechanism, outer cylinder mechanism includes outer cylinder body (1), bottom of the cylinder head (2), upper end cap (3), first buffer gear that floats, second buffer gear that floats and business turn over liquid mouth (4), the lower extreme is equipped with bottom of the cylinder head (2) and upper end cap (3) respectively about outer cylinder body (1), bottom of the cylinder head (2) inboard is equipped with first buffer gear that floats, the inside buffer gear that floats of second that is equipped with of upper end cap (3), the lower extreme symmetry is equipped with business turn over liquid mouth (4) on outer cylinder body (1) outside, piston rod mechanism includes piston telescopic link (5), holding ring (6), piston sleeve (7), second order buffer gear and buffering gum cover (8), be equipped with piston telescopic link (5) in outer cylinder body (1), be equipped with piston sleeve (7) through holding ring (6) on piston telescopic link (5), piston telescopic link (5) bottom is equipped with second order buffer gear, be equipped with buffering gum cover (8) on piston telescopic link (5) the piston sleeve (7) upper end.

2. The floating buffer device of hydraulic cylinder as claimed in claim 1, wherein: the first floating buffer mechanism comprises a guide rod (9), a buffer plate (10), a first spring (11) and a through hole (12), the guide rod (9) is symmetrically arranged in the cylinder bottom cover (2), the buffer plate (10) is arranged on the guide rod (9), the first spring (11) is arranged between the lower portion of the buffer plate (10) and the cylinder bottom cover (2), and the through hole (12) is symmetrically arranged on the buffer plate (10).

3. The floating buffer device of claim 1, wherein: the floating buffer mechanism of the second comprises a guide post (13), a movable sleeve cover (14), a second spring (15) and an anti-collision rubber cushion (16), the guide post (13) is symmetrically arranged in the upper end cover (3), the movable sleeve cover (14) is arranged on the guide post (13), the second spring (15) is sleeved on the guide post (13) in the movable sleeve cover (14), and the anti-collision rubber cushion (16) is arranged on the upper end face of the movable sleeve cover (14).

4. The floating buffer device of hydraulic cylinder as claimed in claim 1, wherein: second order buffer gear is including shrink tank (17), buffering post (18), third spring (19) and buffering cushion (20), piston telescopic link (5) bottom is equipped with shrink tank (17), be equipped with buffering post (18) in shrink tank (17), be equipped with third spring (19) between buffering post (18) and shrink tank (17) inside, shrink tank (17) bottom is equipped with buffering cushion (20).

5. The floating buffer device of claim 1, wherein: the cylinder bottom cover (2) and the upper end cover (3) are hermetically mounted with the outer cylinder body (1) through a sealing rubber ring (21) and a screw (22), and the piston telescopic rod (5) penetrates through the second floating buffer mechanism and the upper end cover (3) and is in sealed telescopic connection with the upper end cover (3).

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