CN201339622Y - Novel hydraulic position-limiting structure - Google Patents
Novel hydraulic position-limiting structure Download PDFInfo
- Publication number
- CN201339622Y CN201339622Y CNU2009200384519U CN200920038451U CN201339622Y CN 201339622 Y CN201339622 Y CN 201339622Y CN U2009200384519 U CNU2009200384519 U CN U2009200384519U CN 200920038451 U CN200920038451 U CN 200920038451U CN 201339622 Y CN201339622 Y CN 201339622Y
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- hydraulic
- limiting
- piston rod
- spring
- novel hydraulic
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Abstract
The utility model relates to a novel hydraulic position-limiting structure, which is installed on piston rods of hydraulic lifting equipment such as a hydraulic jack, a hydraulic lifting platform, a hydraulic jacking machine and the like, and is used for exerting the function of position limiting on the stroke of the piston rod in an oil cylinder cavity. The novel hydraulic position-limiting structure comprises the piston rod which is arranged in the oil cylinder cavity of a hydraulic system. The novel hydraulic position-limiting structure has the characteristics that: a position-limiting hole is vertically arranged in the length direction of the piston rod, a position-limiting rod is arranged in the position-limiting hole, and a stepped hole is arranged at the bottom part of the piston rod; the stepped hole and the position-limiting hole run through each other, and are vertically arranged; and a top rod, a steel ball, a spring and a spring seat are arranged in the stepped hole. The novel hydraulic position-limiting structure has the advantages that: the structure is simple, the processing and assembling of spare parts are easy, and the working efficiency can be increased; the working performance is stable, the duration is good, the cost is low, a sealing piece cannot be damaged, the service life is long, the position-limiting effect is good, and the utilization is safe as well as reliable; the utilizing range is wide, and the novel hydraulic position-limiting structure can be suitable for any hydraulic oil channel which needs position limiting.
Description
Technical field
The utility model relates to a kind of novel hydraulic limit structure, is installed on the piston rod of hydraulic lifting equipment such as hydraulic jack, hydraulic elevating platform, hydraulic lifting machine, is used for the stroke of the piston rod that is arranged on oil cylinder cylinder chamber is played position-limiting action.
Background technique
In the market in the hydraulic lifting equipment such as the hydraulic jack of Shi Yonging, hydraulic elevating platform, hydraulic lifting machine, the spacing of piston rod stroke normally realized by being embedded in Sealing on the piston and the cooperating of spacing hole on being opened in oil cylinder, specifically: advance when the oil in the overcoat enters in the oil cylinder cylinder chamber and promotes piston rod by the base oil circuit, when the Sealing on piston passes through spacing hole, oil in the cylinder chamber flows out from spacing hole, thereby can realize the spacing of piston rod, open scavenger valve, oil flows back to overcoat from oil return circuit.The problem that this limit structure exists is: owing to the Sealing on the piston damages easily, thereby working life is shorter.In addition, also have in the hydraulic lifting equipment on the market by offer restraining groove on oil cylinder and realize the spacing of piston rod, but restraining groove processing is relatively more difficult, cost is also high, and manufacturability is undesirable.
Summary of the invention
The purpose of this utility model be to provide that a kind of simple in structure, processing of being easy to component and assembling, stable work in work, long service life, cost are low, good limit effect and safe and reliable novel hydraulic limit structure.
The purpose of this utility model reaches like this, a kind of novel hydraulic limit structure, it comprises the piston rod 1 in the oil cylinder 3 cylinder chambeies that are located at hydraulic system, be characterized in: at the vertical spacing hole 5 that offers of the length direction of described piston rod 1, one position-limited lever 6 is installed in spacing hole 5, offer a shoulder hole 15 in the bottom of described piston rod 1, shoulder hole 15 connects mutually with described spacing hole 5 and is vertical setting between the two, push rod 7 is set in shoulder hole 15, steel ball 8, spring 9 and spring seat 10, wherein, one end of push rod 7 contacts with position-limited lever 6, the other end of push rod 7 contacts with steel ball 8, steel ball 8 contacts with an end of spring 9, and the other end of spring 9 is installed on the spring seat 10, and spring seat 10 is fixed on the bottom of described piston rod 1.
It is outer and extend in the cylinder chamber of oil cylinder 3 that the two ends of position-limited lever 6 described in the utility model lean out the body of rod of described piston rod 1.
The utility model is because after adopting said structure, one of beneficial effect that has, simple in structure is easy to the processing and the assembling of component, is beneficial to the raising work efficiency; Two, stable work in work, durable in use, cost is low, does not damage Sealing, long service life; Three, good limit effect, safe and reliable; Four, using scope is wide, in the spacing hydraulic circuit of any needs.
Description of drawings
Accompanying drawing is that the utility model is applied to the embodiment's reference drawing on the hydraulic horizontal jack.
Wherein: 1. piston rod, 2. top cap, 3. oil cylinder, 4. overcoat, 5. spacing hole, 6. position-limited lever, 7. push rod, 8. steel ball, 9. spring, 10. spring seat, 11. pistons, 12. scavenger valves, 13. bases, 14. second cylinder chambeies, 15. shoulder holes, 16. first cylinder chambeies, 17. working oil chambers, 18. oil circuits.
Embodiment
By the description of claimant, will help to understand the utility model more, and good effect of the present utility model is embodied more, but embodiment should not be considered as the restriction to some extent to technical solutions of the utility model embodiment.
See also accompanying drawing, in the present embodiment, the hydraulic horizontal jack structure that is disclosed belongs to known prior art, therefore only do simple the description here, it mainly comprises the base 13 with scavenger valve 12, be installed in overcoat 4 and oil cylinder 3 on the base 13 respectively, be formed at the working oil chamber 17 between overcoat 4 and the oil cylinder 3, be arranged in the cylinder chamber of oil cylinder 3 and piston rod 1 carry piston 11 in the bottom, the cylinder chamber of oil cylinder 3 be separated into the first cylinder chamber 16 and the second cylinder chamber 14 by piston 11, connect and the top cap 2 that be used to help piston rod 1 with overcoat 4 and oil cylinder 3 tops respectively, be opened in being respectively applied on the top cap 2 with the oil circuit 18 of working oil chamber 17 with the first cylinder chamber, 16 perforations of oil cylinder 3.Now the piston rod 1 to the hydraulic system of above-mentioned original hydraulic horizontal jack makes improvements, on described piston rod 1, have additional the hydraulic stop structure that is used for control piston bar 1 stroke, this hydraulic stop structure comprises position-limited lever 6, push rod 7, steel ball 8, spring 9 and spring seat 10, described position-limited lever 6 is installed in the spacing hole 5 of piston rod 1, it is outer and extend in the first cylinder chamber 16 of oil cylinder 3 that the two ends of position-limited lever 6 lean out the body of rod of described piston rod 1, described spacing hole 5 is opened in length direction vertical of piston rod 1, also offer one in the bottom of piston rod 1 and be used for the shoulder hole 15 that connects with spacing hole 5, this shoulder hole 15 on the length direction of piston rod 1 and and spacing hole 5 between be vertical setting, push rod 7 is set in shoulder hole 15, steel ball 8, spring 9 and spring seat 10, wherein, one end of push rod 7 contacts with position-limited lever 6, the other end of push rod 7 contacts with steel ball 8, steel ball 8 contacts with an end of spring 9, the other end of spring 9 is installed on the spring seat 10, and spring seat 10 is fixed on the bottom of described piston rod 1.The shape of described spring 9 is not subjected to any restriction, in the present embodiment, is preferably volute spring.
Please narrate working principle of the present utility model in conjunction with the accompanying drawings: when the oil in the overcoat 4 enters by the oil circuit on the base 13 in the second cylinder chamber 14 of oil cylinder 3, piston rod 1 in the promotion oil cylinder 3 is to the left direction displacement of shown position, on the throne moving past in the journey, when the position-limited lever on the piston rod 16 is run into top cap 2, position-limited lever 6 is subjected to an active force to the right, this active force acts on the push rod 7, push rod 7 is after the spring force effect that overcomes the volute spring 9 on the spring seat 10, steel ball 8 is backed down, at this moment, the oil that is arranged in the second cylinder chamber 14 flows into spacing hole 5 by shoulder hole 15, again successively through the first cylinder chamber 16, get back in the working oil chamber 17 behind the oil circuit 18 on the top cap 2, thereby reach effective position-limiting action.When opening scavenger valve 12, the oil return circuit of oil from base 13 that is arranged in the second cylinder chamber 14 flows back to the working oil chamber 17 of overcoat 4, and the active force on the position-limited lever 6 is eliminated, and steel ball 8 resets.
Claims (3)
1, a kind of novel hydraulic limit structure, it comprises the piston rod (1) in oil cylinder (3) the cylinder chamber that is located at hydraulic system, it is characterized in that the vertical spacing hole (5) that offers at the length direction of described piston rod (1), one position-limited lever (6) is installed in spacing hole (5), offer a shoulder hole (15) in the bottom of described piston rod (1), shoulder hole (15) connects mutually with described spacing hole (5) and is vertical setting between the two, push rod (7) is set in shoulder hole (15), steel ball (8), spring (9) and spring seat (10), wherein, one end of push rod (7) contacts with position-limited lever (6), the other end of push rod (7) contacts with steel ball (8), steel ball (8) contacts with an end of spring (9), the other end of spring (9) is installed on the spring seat (10), and spring seat (10) is fixed on the bottom of described piston rod (1).
2, it is outer and extend in the cylinder chamber of oil cylinder (3) that a kind of novel hydraulic limit structure according to claim 1, the two ends that it is characterized in that described position-limited lever (6) lean out the body of rod of described piston rod (1).
3, a kind of novel hydraulic limit structure according to claim 1 is characterized in that described spring (9) is a volute spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009200384519U CN201339622Y (en) | 2009-01-20 | 2009-01-20 | Novel hydraulic position-limiting structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009200384519U CN201339622Y (en) | 2009-01-20 | 2009-01-20 | Novel hydraulic position-limiting structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201339622Y true CN201339622Y (en) | 2009-11-04 |
Family
ID=41235169
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2009200384519U Expired - Fee Related CN201339622Y (en) | 2009-01-20 | 2009-01-20 | Novel hydraulic position-limiting structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201339622Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102052357A (en) * | 2010-12-22 | 2011-05-11 | 常熟通润汽车零部件股份有限公司 | Jack hydraulic part with function of automatically regulating descending speed |
| CN103967864A (en) * | 2014-05-09 | 2014-08-06 | 中科华核电技术研究院有限公司 | High-pressure double-action self-compensation thin-wall hydraulic cylinder |
| CN104692279A (en) * | 2015-03-23 | 2015-06-10 | 常熟通润汽车零部件股份有限公司 | Oil returning structure |
-
2009
- 2009-01-20 CN CNU2009200384519U patent/CN201339622Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102052357A (en) * | 2010-12-22 | 2011-05-11 | 常熟通润汽车零部件股份有限公司 | Jack hydraulic part with function of automatically regulating descending speed |
| CN103967864A (en) * | 2014-05-09 | 2014-08-06 | 中科华核电技术研究院有限公司 | High-pressure double-action self-compensation thin-wall hydraulic cylinder |
| CN104692279A (en) * | 2015-03-23 | 2015-06-10 | 常熟通润汽车零部件股份有限公司 | Oil returning structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: ANHUI TONGRUN AUTO ACCESSORY CO., LTD. Free format text: FORMER OWNER: CHANGSHU TONGRUN AUTO ACCESSORY CO., LTD. Effective date: 20121107 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 215500 SUZHOU, JIANGSU PROVINCE TO: 242341 XUANCHENG, ANHUI PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20121107 Address after: Niu Le Cun Ning Dun 242341 Anhui city of Ningguo province Zhu Cun Wu group Patentee after: Anhui Tongrun Auto Parts Co., Ltd. Address before: 215500 new Longteng Industrial Park, Changshu Economic Development Zone, Changshou City, Jiangsu Patentee before: Changshu Tongrun Auto Accessory Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091104 Termination date: 20160120 |
|
| EXPY | Termination of patent right or utility model |