CN202144811U - Self-locking type hydraulic oil cylinder - Google Patents
Self-locking type hydraulic oil cylinder Download PDFInfo
- Publication number
- CN202144811U CN202144811U CN201120276913U CN201120276913U CN202144811U CN 202144811 U CN202144811 U CN 202144811U CN 201120276913 U CN201120276913 U CN 201120276913U CN 201120276913 U CN201120276913 U CN 201120276913U CN 202144811 U CN202144811 U CN 202144811U
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- China
- Prior art keywords
- cylinder barrel
- valve rod
- valve
- cylinder
- self
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- 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
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Abstract
The utility model belongs to hydraulic components and specially relates to a self-locking type hydraulic oil cylinder. The self-locking type hydraulic oil cylinder comprises a cylinder barrel (4), a piston (5), a piston rod (1), a cylinder bottom oil port 1 (11), a cylinder bottom oil port 2 (12) and a conduit (13). A guide sleeve (3) is arranged between a circular bead at the left end in the cylinder barrel (4) and the piston rod (1), the outer end of the guide sleeve (3) is pressed by a pressing cover (2) so as to be in threaded connection with the cylinder barrel (4), the guide sleeve (3), the inner wall of the cylinder barrel (4) and the periphery of the piston rod (1) are all sealed by sealing rings, the right end of the cylinder barrel (4) is fixedly connected with a rear cover (7), a through valve rod hole (7-1) is radially arranged in the rear cover (7), a valve rod (10) is arranged in the valve rod hole (7-1) at one end, the end of the valve rod (10) is provided with a check valve (8), and the check valve (8) corresponds to an oil port (9) vertical to the valve rod hole (7-1) on the rear cover (7), thereby ensuring a lifted object to be balanced and not to fall and incline as well as avoiding the occurrence of accidents.
Description
Technical field
The utility model belongs to hydraulic element, particularly a kind of self-locking hydraulic jack.
Background technique
At present, the hydraulic jack of when lifting, using is that piston rod stretches out when hydraulic jack gives rise to certain height with object; Oil cylinder is in high pressure conditions, at this moment, because a variety of causes; Easily damaged parts such as, Sealing aging like oil pipe or other fastening piece moment breaks and can cause then that oil pressure descends in the oil pipe, and piston rod is withdrawn in the cylinder body, and the object of piston rod institute lifting also can descend thereupon or tilt; Thereby cause the accident, even major accident.
Summary of the invention
The purpose of the utility model is to overcome above-mentioned technical deficiency, provides a kind of and prevents that hydraulic oil leaks in the oil pipe, guarantees to support the self-locking hydraulic jack of object balance.
The utility model technical solution problem adopts technological scheme to be: the self-locking hydraulic jack comprises cylinder barrel, piston, piston rod, cylinder bottom hydraulic fluid port one, cylinder bottom hydraulic fluid port two, conduit; Be characterized between shoulder place and the piston rod of left end head in cylinder barrel guide pin bushing being housed; The guide pin bushing outer end is threaded with cylinder barrel with gland and pushes down; Guide pin bushing and inner wall of cylinder and with the piston rod periphery all with seal ring sealing, be fixedly connected bonnet at cylinder barrel right-hand member head, in bonnet, radially be provided with the valve rod hole of entire body; In the valve rod hole at one end valve rod is housed; The valve rod termination is provided with one-way valve, the hydraulic fluid port vertical on the corresponding bonnet of one-way valve with valve rod hole, and it is stifled to establish a valve at the other end connection one-way valve of valve rod hole.
The beneficial effect of the utility model is: the self-locking hydraulic jack breaks meeting oil pipe moment; Hydraulic fluid leak; Self-locking device in the oil pipe can be sealed the hydraulic oil that leaks automatically; Make piston rod be unlikely to be withdrawn in the cylinder body, guarantee that the object balance of lifting does not fall, do not tilt, avoid the generation of accident.
Description of drawings
Specify with embodiment below in conjunction with accompanying drawing.
Fig. 1 is that self-locking hydraulic jack structure master looks sectional view.
Fig. 2 is the left side view of Fig. 1.
Among the figure, the 1-piston rod; The 2-gland; The 3-guide pin bushing; The 4-cylinder barrel; The 5-piston; The 6-valve is stifled; The 7-bonnet; The 7-1-valve rod hole; The 8-one-way valve; The 9-hydraulic fluid port; The 10-valve rod; 11-cylinder bottom hydraulic fluid port one; 12-cylinder bottom hydraulic fluid port two; The 13-conduit.
Embodiment
Embodiment; With reference to accompanying drawing 1,2; Guide pin bushing 3 is equipped with at shoulder place in the left port of the cylinder barrel 4 of self-locking hydraulic jack; Guide pin bushing 3 all seals with seal ring with cylinder barrel 4 inwalls and piston rod 1 periphery, and guide pin bushing 3 external application glands 2 are threaded with cylinder barrel 4 left port and fixedly push down, and gland 2 seals with seal ring with piston rod 1 left end head.The right-hand member head of piston rod 1 is fixedly connected piston 5, and piston 5 seals with seal ring with cylinder barrel 4 inwalls.At the fixing bonnet 7 of the right-hand member head of cylinder barrel 4; In bonnet 7, radially be provided with the valve rod hole 7-1 of entire body, the end in valve rod hole 7-1 is equipped with valve rod 10, and the inner termination of valve rod 10 connects one-way valve 8; Hydraulic fluid port 9 in the one-way valve 8 corresponding bonnets 7,8 corresponding valve rod 7-1 block up 6 shutoff with valve at one-way valve.On the circumference of bonnet 7, be provided with cylinder bottom hydraulic fluid port 1 and cylinder bottom hydraulic fluid port 2 12, establish conduit 13 on the cylinder bottom hydraulic fluid port 2 12 oil is caused in cylinder barrel 4 ante-chambers.One-way valve 8 is blocked hydraulic fluid port 9 when meeting the oil pipe oil leakage, and oil is not leaked, and piston rod 1 is not withdrawn in the cylinder body 4, does not make the lifting object fall to.
Claims (1)
1. self-locking hydraulic jack; Comprise cylinder barrel (4), piston (5), piston rod (1), cylinder bottom hydraulic fluid port one (11), cylinder bottom hydraulic fluid port two (12), conduit (13); It is characterized in that between shoulder place and the piston rod (1) of left end head in cylinder barrel (4) guide pin bushing (3) being housed; Guide pin bushing (3) outer end is threaded with cylinder barrel (4) with gland (2) and pushes down; Guide pin bushing (3) all seals with seal ring with cylinder barrel (4) inwall with piston rod (1) periphery, is fixedly connected bonnet (7) at cylinder barrel (4) right-hand member head, in bonnet (7), radially is provided with the valve rod hole (7-1) of entire body; Valve rod (10) is housed in the valve rod hole at one end (7-1); Valve rod (10) termination is provided with one-way valve (8), and the corresponding bonnet of one-way valve (8) (7) is gone up the hydraulic fluid port (9) vertical with valve rod hole (7-1), establishes a valve stifled (6) at the other end connection one-way valve (8) of valve rod hole (7-1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120276913U CN202144811U (en) | 2011-08-02 | 2011-08-02 | Self-locking type hydraulic oil cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120276913U CN202144811U (en) | 2011-08-02 | 2011-08-02 | Self-locking type hydraulic oil cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202144811U true CN202144811U (en) | 2012-02-15 |
Family
ID=45580742
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120276913U Expired - Fee Related CN202144811U (en) | 2011-08-02 | 2011-08-02 | Self-locking type hydraulic oil cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202144811U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102628462A (en) * | 2012-04-18 | 2012-08-08 | 江苏悦达专用车有限公司 | Box toppling cylinder of sweeping machine |
| CN107035742A (en) * | 2017-06-21 | 2017-08-11 | 张多艳 | A kind of novel hydraulic cylinder |
-
2011
- 2011-08-02 CN CN201120276913U patent/CN202144811U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102628462A (en) * | 2012-04-18 | 2012-08-08 | 江苏悦达专用车有限公司 | Box toppling cylinder of sweeping machine |
| CN107035742A (en) * | 2017-06-21 | 2017-08-11 | 张多艳 | A kind of novel hydraulic cylinder |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120215 Termination date: 20170802 |