CN203670357U - Novel Anti-loosening structure of hydraulic cylinder piston - Google Patents

Novel Anti-loosening structure of hydraulic cylinder piston Download PDF

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Publication number
CN203670357U
CN203670357U CN201420023045.6U CN201420023045U CN203670357U CN 203670357 U CN203670357 U CN 203670357U CN 201420023045 U CN201420023045 U CN 201420023045U CN 203670357 U CN203670357 U CN 203670357U
Authority
CN
China
Prior art keywords
piston
hydraulic cylinder
annular groove
screw
piston rod
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN201420023045.6U
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Chinese (zh)
Inventor
郑加海
陈晓菲
王相勇
邢连运
王洪林
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
LINYI JINLI HYDRAULIC TECHNOLOGY CO LTD
Original Assignee
LINYI JINLI HYDRAULIC TECHNOLOGY CO LTD
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Filing date
Publication date
Application filed by LINYI JINLI HYDRAULIC TECHNOLOGY CO LTD filed Critical LINYI JINLI HYDRAULIC TECHNOLOGY CO LTD
Priority to CN201420023045.6U priority Critical patent/CN203670357U/en
Application granted granted Critical
Publication of CN203670357U publication Critical patent/CN203670357U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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  • Pistons, Piston Rings, And Cylinders (AREA)
  • Actuator (AREA)

Abstract

The utility model discloses a novel anti-loosening structure of a hydraulic cylinder piston and belongs to the technical field of hydraulic cylinders. The anti-loosening structure overcomes the defect that a piston in the prior art is prone to repeated stressing and loosening. The novel anti-loosening structure of the hydraulic cylinder piston comprises a piston rod, a cylinder barrel and a piston. A threaded hole is formed in the radial direction of the piston, and an annular groove is formed in the piston rod and corresponds to the threaded hole in the piston in position. A screw is arranged in the threaded hole, and the lower end of the screw is screwed into the annular groove. A pressing block is arranged above the screw in the threaded hole, a bearing ring groove is formed above the threaded hole, and a bearing ring is arranged in the bearing ring groove. When applied to a hydraulic cylinder, the anti-loosening structure guarantees tight connection and reliable locking between the piston and the piston rod.

Description

Novel hydraulic cylinder piston anti-loose structure
Technical field:
The utility model belongs to oil hydraulic cylinder technical field, specifically, relates in particular to a kind of novel hydraulic cylinder piston anti-loose structure.
Background technique:
The oil hydraulic cylinder of prior art is mainly made up of component such as cylinder barrel, piston, piston rod, cylinder cap and Sealings, and wherein piston is the groundwork part of oil hydraulic cylinder.Under the effect of hydraulic coupling, piston carries out linear reciprocating motion along cylinder barrel, and drives piston rod to complete release, retraction action, thereby changes hydraulic energy into mechanical energy.According to the reciprocating job requirement of oil hydraulic cylinder, piston need to bear huge thrust or pulling force with being connected of piston rod, therefore, locking device is set, prevents that their connection from producing loosening particularly important.Engineering machinery hydraulic cylinder piston is connected normally and is threaded with piston rod at present, and conventional locking mode is the locking of screw steel ball, and its structure characteristic is: on piston radial, bore tapping hole, piston rod thread section is processed with groove.When assembling, first piston is screwed, the tapped hole on piston is corresponding with piston rod groove location, then steel ball is placed in the groove of piston rod, then with screwing in the screw in piston thread hole, steel ball is compressed, and reaches fastening object.The shortcoming of this structure is: piston is repeatedly stressed loosening, easily causes that screw loosening screws out, and causes locking inefficacy, thereby causes that piston comes off.
Summary of the invention:
The utility model object is to provide the hydraulic cylinder piston anti-loose structure of the locking quality of a kind of effective assurance, the above-mentioned defect existing to overcome prior art.
To achieve these goals, the technical solution adopted in the utility model is: a kind of novel hydraulic cylinder piston anti-loose structure, comprise piston rod, cylinder barrel and piston, piston radial is provided with tapped hole, and piston rod is provided with annular groove, tapped hole on piston is corresponding with the annular groove position on piston rod, in tapped hole, be provided with screw, screw lower end screws in annular groove, and the top of tapped hole inner bolt is provided with briquetting, tapped hole top is provided with supporting annular groove, in supporting annular groove, is provided with supporting ring.
Briquetting and supporting ring interstice coverage are between 0.1-0.5mm.
Briquetting is preferably adopted as nylon material.
Compared with prior art, the beneficial effects of the utility model are: the related innovation structure of the utility model makes that piston is fastening with being connected of piston rod, reliable lock, guarantee the requirement to two connection reliability, and improve efficiency of assembling, reduced labor strength, economic benefit and social benefit are obvious.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is tapped hole and the structural representation that supports annular groove in the utility model.
In figure: 1, piston rod; 2, cylinder barrel; 3, piston; 4, supporting ring; 5, briquetting; 6, screw; 7, tapped hole; 8, annular groove; 9, supporting annular groove.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail:
As shown in Figure 1 and Figure 2, a kind of novel hydraulic cylinder piston anti-loose structure, comprise piston rod 1, cylinder barrel 2 and piston 3, piston 3 footpaths are upwards provided with tapped hole 7, piston rod 1 is processed with annular groove 8, tapped hole 7 on piston 3 is corresponding with annular groove 8 positions on piston rod 1, in tapped hole 7, be provided with screw 6, screw 6 lower ends screw in annular groove 8, the top of tapped hole 7 inner bolts 6 is provided with briquetting 5, tapped hole 7 tops are provided with supporting annular groove 9, in supporting annular groove 9, are provided with supporting ring 4, and supporting ring 4 tops contact with cylinder barrel 2 inwalls.What wherein also need solution is, briquetting 5 and the size of screw 6 and with the numerical value of choosing of piston matching hole diameter, after being suitable for making its assembling and supporting ring 4 gaps are enough little and do not interfere with supporting ring 4, the numerical value of choosing of briquetting 5 and screw 6 sizes, should guarantee that briquetting 5 and supporting ring 4 gaps are advisable with 0.1-0.5mm.
Briquetting 5 is preferably adopted as nylon material, and nylon material has good wear-resisting, corrosion resistance, have good rigidity and mechanical strength, and oil resistance is good.
When assembling, first piston 3 is screwed, tapped hole 7 on piston 3 is corresponding with annular groove 8 positions on piston rod 1, screwing in screw 6 tightens, then put into briquetting 5 and assemble supporting ring 4, after oil hydraulic cylinder has assembled, cylinder barrel 2 compresses supporting ring 4, the spacing briquetting 5 of supporting ring 4, briquetting 5 housing screws 6, thus prevent the loosening back-out of screw 6, reach locking object.
The innovation structure that the utility model is related, has guaranteed piston 3 and reliable lock fastening with being connected of piston rod 1, has reduced part so that oil hydraulic cylinder cost simultaneously, and economic benefit is very obvious, is a kind of economic and practical locking mechanism that is threaded.

Claims (3)

1. a novel hydraulic cylinder piston anti-loose structure, comprise piston rod (1), cylinder barrel (2) and piston (3), described piston (3) footpath is upwards provided with tapped hole (7), piston rod (1) is provided with annular groove (8), tapped hole (7) on described piston (3) is corresponding with annular groove (8) position on piston rod (1), it is characterized in that: in described tapped hole (7), be provided with screw (6), described screw (6) lower end screws in annular groove (8), the top of tapped hole (7) inner bolt (6) is provided with briquetting (5), described tapped hole (7) top is provided with supporting annular groove (9), in described supporting annular groove (9), be provided with supporting ring (4).
2. novel hydraulic cylinder piston anti-loose structure according to claim 1, is characterized in that: the interstice coverage of described briquetting (5) and supporting ring (4) is between 0.1-0.5mm.
3. novel hydraulic cylinder piston anti-loose structure according to claim 1, is characterized in that: described briquetting (5) adopts nylon material.
CN201420023045.6U 2014-01-15 2014-01-15 Novel Anti-loosening structure of hydraulic cylinder piston Expired - Fee Related CN203670357U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201420023045.6U CN203670357U (en) 2014-01-15 2014-01-15 Novel Anti-loosening structure of hydraulic cylinder piston

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201420023045.6U CN203670357U (en) 2014-01-15 2014-01-15 Novel Anti-loosening structure of hydraulic cylinder piston

Publications (1)

Publication Number Publication Date
CN203670357U true CN203670357U (en) 2014-06-25

Family

ID=50966660

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201420023045.6U Expired - Fee Related CN203670357U (en) 2014-01-15 2014-01-15 Novel Anti-loosening structure of hydraulic cylinder piston

Country Status (1)

Country Link
CN (1) CN203670357U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT17441U1 (en) * 2020-10-13 2022-04-15 Avl List Gmbh Length-adjustable connecting rod with locking element for screw connection

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT17441U1 (en) * 2020-10-13 2022-04-15 Avl List Gmbh Length-adjustable connecting rod with locking element for screw connection

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Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20140625

Termination date: 20150115

EXPY Termination of patent right or utility model