CN213628253U

CN213628253U - Sealed assembly anti-shear type hydraulic oil cylinder

Info

Publication number: CN213628253U
Application number: CN202022467070.1U
Authority: CN
Inventors: 张鹏
Original assignee: Yangzhou Jiangdu Yongheng Pneumatic Hydraulic Co Ltd
Current assignee: Yangzhou Yutian Agricultural Machinery Co.,Ltd.
Priority date: 2020-10-30
Filing date: 2020-10-30
Publication date: 2021-07-06
Anticipated expiration: 2030-10-30

Abstract

The utility model discloses a sealed assembly anti-shear type hydraulic oil cylinder, including cylinder and piston rod, the piston rod slides and pegs graft inside the cylinder, the piston rod bottom is connected with the cylinder through the locating component, the cylinder lateral wall sets up the location chamber, the locating component slides and pegs graft inside the location chamber, and the locating component includes connecting rod, fixed block and ball, connecting rod one end is connected with the piston rod lower surface, and the other end of the connecting rod installs the fixed block, the roll connection ball of fixed block both sides roll, the ball is half embedded and the outermost end is tangent with the location intracavity wall; the piston rod drives the connecting rod in the positioning assembly to move while reciprocating up and down, the connecting rod drives the balls on the fixing block to slide up and down on the inner wall of the positioning cavity in a matching manner, and the piston rod is limited to perform steering movement, so that the steering abrasion of the sealing element is avoided, the air tightness of the hydraulic oil cylinder is ensured, the hydraulic oil cylinder can normally operate, and the service life is prolonged.

Description

Sealed assembly anti-shear type hydraulic oil cylinder

Technical Field

The utility model relates to a hydraulic cylinder part technical field specifically is a sealed assembly prevents cutting formula hydraulic cylinder.

Background

The hydraulic cylinder is a pressure finishing process, which utilizes the cold plasticity characteristic of metal at normal temperature and utilizes a rolling tool to apply certain pressure on the surface of a workpiece, so that the metal on the surface layer of the workpiece generates plastic flow and is filled into the original residual low concave trough, thereby achieving the purpose of reducing the roughness value of the surface of the workpiece. Because the rolled surface metal is plastically deformed, the surface structure is cold hardened and the crystal grains are thinned to form a compact fibrous shape and a residual stress layer is formed, so that the hardness and the strength are improved, and the wear resistance, the corrosion resistance and the matching property of the surface of the workpiece are improved.

However, the existing hydraulic oil cylinder has the following disadvantages when in use:

1. in the working process of the hydraulic oil cylinder, the piston rod reciprocates up and down under the action of hydraulic oil pressure, and is easy to steer and move, so that a sealing element between the cylinder barrel and the piston rod is driven to steer and wear, and in the past, the sealing element is damaged to seriously influence the air tightness of the hydraulic oil cylinder, so that the working state of the hydraulic oil cylinder is abnormal, and the working efficiency is reduced;

2. in the working process of the hydraulic oil cylinder, the piston rod can be exposed to the outside for a long time and cannot be protected in time, so that the oxidation corrosion on the surface of the piston rod is easily caused, and the service life of the piston rod is shortened.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a sealed assembly prevents cutting formula hydraulic cylinder, with the hydraulic cylinder that proposes in solving above-mentioned background art in the course of the work, the piston rod is when reciprocating motion about under the effect of oil hydraulic pressure, take place to turn to the removal easily, can drive the sealing member between cylinder and the piston rod and take place to turn to wearing and tearing, in the long run, the impaired gas tightness that seriously influences hydraulic cylinder of sealing member, lead to hydraulic cylinder operating condition to be out of order, reduce work efficiency, hydraulic cylinder is in the course of the work, the piston rod can expose for a long time in the external world, and can not in time protect, cause the oxidative attack on piston rod surface easily, reduce its life's problem.

In order to solve the technical problem, the utility model provides a following technical scheme: a sealed assembled anti-shearing hydraulic oil cylinder comprises a cylinder barrel and a piston rod, wherein the piston rod is inserted in the cylinder barrel in a sliding mode, the bottom of the piston rod is connected with the cylinder barrel through a positioning assembly, a positioning cavity is formed in the side wall of the cylinder barrel, the positioning assembly is inserted in the positioning cavity in a sliding mode and comprises a connecting rod, a fixing block and balls, one end of the connecting rod is connected with the lower surface of the piston rod, the other end of the connecting rod is provided with the fixing block, the balls are connected to two sides of the fixing block in a rolling mode, the balls are semi-embedded, the outermost ends of the balls are tangent to the inner wall of the positioning cavity, the piston rod moves along with the connecting rod in the positioning assembly in a driving mode while reciprocating up and down, the balls on the fixing block are driven by the connecting rod to, the service life is prolonged.

Furthermore, a sealing ring is installed at the sliding insertion position of the top of the cylinder barrel and the piston rod, a boss and a diversion trench are annularly arranged in the sealing ring, the boss and the diversion trench are alternately arranged, oil is filled into the diversion trench to continuously protect the piston rod, so that the piston rod is prevented from being oxidized and corroded by the outside, a lubricating effect is achieved, and the service life of the piston rod is prolonged.

Furthermore, the stopper is installed to the inside bottom in location chamber, and fixes a position the inside top in chamber and install the spacing ring, stopper upper surface and spacing ring lower surface all bond the rubber pad, prevent effectively through stopper and spacing ring that the connecting rod from surpassing its stroke scope, guarantee locating component's working property, effectively cushioned connecting rod reciprocating motion's impact force through the rubber pad, avoid the mechanical wear that rigid contact caused, prolong its service life.

Further, the cylinder outer wall cover is equipped with the rib ring, and the rib is installed to the cylinder outer wall, rib ring and rib be a plurality of and be the vertical direction setting, and hydraulic cylinder is in the course of the work, and the cylinder bears the powerful pressure of inside production, takes place deformation easily, adds in the cylinder outside and establishes rib ring cooperation rib and consolidate, and the compressive strength of reinforcing cylinder improves the steadiness of cylinder.

Further, the cylinder bottom installation unable adjustment base, unable adjustment base lower surface complex has the slipmat and for bonding, through the slipmat that bonds, rigid connection when can avoiding unable adjustment base and fixed position installation also can play the cushioning effect to the cylinder when dismantling and placing, prevents to influence the use because of colliding with emergence deformation.

Furthermore, the length of the connecting rod is larger than the movement stroke of the piston rod and smaller than the depth of the positioning cavity, so that the phenomenon that the length of the connecting rod is not appropriate and the normal work of the hydraulic oil cylinder is affected is avoided, and the normal work performance of the positioning assembly is ensured.

Compared with the prior art, the utility model discloses the beneficial effect who reaches is:

1. the utility model discloses the piston rod bottom is passed through locating component and is connected with the cylinder, the cylinder lateral wall sets up the location chamber, locating component slides and pegs graft in location intracavity portion, and locating component includes the connecting rod, fixed block and ball, when up-and-down motion was done to the piston rod, drive the link motion among the locating component, the ball on the connecting rod transmission fixed block, the cooperation ball slides from top to bottom at location intracavity wall, the restriction piston rod takes place to turn to the removal, thereby avoid turning to wearing and tearing of sealing member, guarantee hydraulic cylinder's gas tightness and make its normal operating, increase of service life.

2. The utility model discloses the ring is equipped with boss and guiding gutter in the sealing washer, and boss and guiding gutter set up in turn, and it continuously protects the piston rod to annotate fluid through the guiding gutter, prevents that the external world from corroding its oxidation to play lubricated effect, improve work efficiency, prolong its life.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 is a schematic view of the overall structure of the present invention;

fig. 2 is a schematic front view of the present invention;

FIG. 3 is a schematic structural view of the positioning assembly of the present invention;

fig. 4 is a schematic view of the connection structure of the sealing ring and the guiding groove of the present invention;

in the figure: 1. a cylinder barrel; 2. a piston rod; 3. a seal ring; 301. a boss; 302. a diversion trench; 4. a positioning assembly; 401. a connecting rod; 402. a fixed block; 403. a ball bearing; 5. a rib ring; 6. a rib; 7. a fixed base; 701. a non-slip mat; 8. a positioning cavity; 801. a limiting block; 802. a limit ring.

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.

Referring to fig. 1-4, the present invention provides a technical solution: the utility model provides a sealed assembly anti-shear formula hydraulic cylinder, includes cylinder 1 and

piston rod

2, 2 slide pegs graft inside 1 cylinder of piston rod, 2 bottoms of piston rod are connected with 1 cylinder of cylinder through locating

component

4, 1 lateral wall of cylinder sets up location chamber 8, locating component 4 slides pegs graft inside 8 location chamber, and locating component 4 includes connecting rod 401, fixed block 402 and

ball

403, 2 lower surfaces of piston rod are connected to connecting rod 401 one end, and connecting rod 401 other end installation fixed block 402, fixed block 402 both sides roll connection ball 403, ball 403 is half embedded and the outermost end is tangent with 8 inner walls in location chamber.

The top of the cylinder barrel 1 and the sliding insertion part of the piston rod 2 are provided with a sealing ring 3, a boss 301 and a diversion trench 302 are annularly arranged in the sealing ring 3, the boss 301 and the diversion trench 302 are alternately arranged, oil is filled into the diversion trench 302 to continuously protect the piston rod 2, so that the piston rod is prevented from being oxidized and corroded by the outside, a lubricating effect is achieved, and the service life of the piston rod is prolonged.

Stopper 801 is installed to 8 inside bottoms in location chamber, and 8 inside tops in location chamber installation spacing rings 802, stopper 801 upper surface and spacing ring 802 lower surface all bond the rubber pad, effectively prevent through stopper 801 and spacing ring 802 that connecting rod 401 from surpassing its stroke scope, guarantee locating component 4's working property, effectively cushioned connecting rod 401 reciprocating motion's impact force through the rubber pad, avoid the mechanical wear that rigid contact caused, prolong its service life.

1 outer wall cover of cylinder is equipped with

rib ring

5, and 1 outer wall of cylinder installs rib 6, rib ring 5 and rib 6 are a plurality of and are the vertical direction setting, and hydraulic cylinder in the course of the work, cylinder 1 bears the powerful pressure of inside production, takes place deformation easily, adds in 1 outside of cylinder and establishes rib ring 5 cooperation rib 6 and consolidate, strengthens the compressive strength of cylinder 1, improves the steadiness of cylinder 1.

The installation unable adjustment base 7 in 1 bottom of cylinder, unable adjustment base 7 lower surface complex has slipmat 701 and for bonding, through bonding slipmat 701, rigid connection when can avoiding unable adjustment base 7 and fixed position installation when dismantling and placing also can play the cushioning effect to cylinder 1, prevents to take place deformation because of colliding with, influences the use.

The length of the connecting rod 401 is larger than the movement stroke of the piston rod 2 and smaller than the depth of the positioning cavity 8, so that the problem that the length of the connecting rod 401 is not appropriate and the normal work of the hydraulic oil cylinder is influenced is avoided, and the normal work performance of the positioning assembly 4 is guaranteed.

The utility model discloses a theory of operation: the bottom of the piston rod 2 is connected with the cylinder barrel 1 through the positioning component 4, the side wall of the cylinder barrel 1 is provided with the positioning cavity 8, the positioning component 4 is inserted in the positioning cavity 8 in a sliding manner, the positioning component 4 comprises a connecting rod 401, a fixing block 402 and balls 403, the two sides of the fixing block 402 are connected with the balls 403 in a rolling manner, the balls 403 are semi-embedded, the outermost ends of the balls 403 are tangent to the inner wall of the positioning cavity 8, the piston rod 2 is driven to move by the connecting rod 401 in the positioning component 4 while reciprocating up and down, the connecting rod 401 drives the balls 403 on the fixing block 402 to match the balls 403 to slide up and down on the inner wall of the positioning cavity 8 to limit the piston rod 2 to perform steering movement, thereby avoiding steering abrasion of the sealing ring 3, ensuring the air tightness of the hydraulic cylinder to ensure that the hydraulic cylinder operates normally, prolonging the service life, the bottom end inside the positioning cavity, the working performance of the positioning component 4 is guaranteed, the sealing ring 3 is installed at the sliding insertion position of the top of the cylinder barrel 1 and the piston rod 2, the boss 301 and the diversion trench 302 are arranged in the sealing ring 3 in a ring mode, the boss 301 and the diversion trench 302 are alternately arranged, oil is filled into the diversion trench 302 to continuously protect the piston rod 2, oxidation corrosion of the outside is prevented, a lubricating effect is achieved, the working efficiency is improved, and the service life of the piston rod is prolonged.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a sealed assembly anti-shear formula hydraulic cylinder, includes cylinder (1) and piston rod (2), piston rod (2) slide and peg graft inside cylinder (1), its characterized in that: piston rod (2) bottom is passed through locating component (4) and is connected with cylinder (1), cylinder (1) lateral wall sets up location chamber (8), locating component (4) slide and peg graft inside location chamber (8), and locating component (4) include connecting rod (401), fixed block (402) and ball (403), piston rod (2) lower surface is connected to connecting rod (401) one end, and connecting rod (401) other end installation fixed block (402), fixed block (402) both sides roll connection ball (403), ball (403) are half embedded and the outermost end is tangent with location chamber (8) inner wall.

2. The seal-assembled, anti-shear hydraulic ram of claim 1, wherein: sealing rings (3) are installed at the sliding insertion positions of the top of the cylinder barrel (1) and the piston rod (2), bosses (301) and guide grooves (302) are annularly arranged on the inner ring of each sealing ring (3), and the bosses (301) and the guide grooves (302) are alternately arranged.

3. The seal-assembled, anti-shear hydraulic ram of claim 1, wherein: locating cavity (8) inside bottom installation stopper (801), and locating cavity (8) inside top installation spacing ring (802), rubber pad all bonds with limiting ring (802) lower surface on stopper (801) upper surface and the spacing ring (802).

4. The seal-assembled, anti-shear hydraulic ram of claim 1, wherein: the outer wall of the cylinder barrel (1) is sleeved with a rib ring (5), ribs (6) are installed on the outer wall of the cylinder barrel (1), and the rib ring (5) and the ribs (6) are arranged in the vertical direction and are a plurality of.

5. The seal-assembled, anti-shear hydraulic ram of claim 1, wherein: the bottom of the cylinder barrel (1) is provided with a fixed base (7), and the lower surface of the fixed base (7) is compounded with an anti-slip pad (701) and is bonded.

6. The seal-assembled, anti-shear hydraulic ram of claim 1, wherein: the length of the connecting rod (401) is larger than the motion stroke of the piston rod (2) and smaller than the depth of the positioning cavity (8).