CN204778594U - Limit for height device of hydropneumatic jack cylinder - Google Patents
Limit for height device of hydropneumatic jack cylinder Download PDFInfo
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- CN204778594U CN204778594U CN201520436675.0U CN201520436675U CN204778594U CN 204778594 U CN204778594 U CN 204778594U CN 201520436675 U CN201520436675 U CN 201520436675U CN 204778594 U CN204778594 U CN 204778594U
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Abstract
The utility model discloses a limit for height device of hydropneumatic jack cylinder, it is installed in the hydro -cylinder, and it includes that the hydraulic fluid port connects and the needle, the hydraulic fluid port connect in the piston rod of hydro -cylinder below set up and fixed mounting on the base of hydro -cylinder, the hydraulic fluid port connects top fixed mounting has a cyclic annular first limit for height cylinder liner, the hydraulic fluid port connect with first limit for height cylinder liner formation oil circuit route, the needle passes the oil circuit route, has seted up the oil outlet on the lateral wall that the hydraulic fluid port connects, the oil circuit route of process when the oil outlet is located needle decline, a gasket is installed to the tail end of needle, and the cover is equipped with spring and check ring on the needle of gasket below, at least one limit for height cylinder liner has been cup jointed between the piston rod of hydro -cylinder and the first limit for height cylinder liner step by step, the gasket and be arranged in the piston rod and first limit for height cylinder liner between the limit for height cylinder liner inner wall sliding connection of the limit for height cylinder liner bottom that cup joints step by step.
Description
Technical field
The utility model relates to jacking equipment field, particularly relates to the height limiter of hydropneumatic jack cylinder.
Background technology
Hydropneumatic jack utilizes gas, liquid supercharging principle, coordinates a kind of novel, the exquisite hydraulic lifting equipment of telescoping hydraulic cylinder unitized design.Hydropneumatic jack is on the market under the prerequisite that oil cylinder internal pressure is high, very high to oil cylinder requirement of strength when oil cylinder gives rise to the highest, easily causes the drawing crack of oil cylinder, breakage.
Summary of the invention
The purpose of this utility model is to provide a kind of height limiter of hydropneumatic jack cylinder.
The technical scheme realizing the utility model object is a kind of height limiter of hydropneumatic jack cylinder, it is installed in oil cylinder, it comprises port connection and needle, described port connection arranges and is fixedly installed on the base of oil cylinder below the piston rod of oil cylinder, ring-type first limit for height cylinder sleeve is installed with above port connection, port connection and the first limit for height cylinder sleeve form oil circuit path, described needle is through oil circuit path, the sidewall of port connection offers oil outlet, described oil outlet is positioned on the oil circuit path of process when needle declines, the tail end of needle is provided with a pad, needle below pad is arranged with spring and trip ring, at least one limit for height cylinder sleeve is socketed with step by step, the limit for height inboard wall of cylinder liner sliding block joint of the bottom in described pad and the limit for height cylinder sleeve that is socketed step by step between piston rod and the first limit for height cylinder sleeve between the piston rod of described oil cylinder and the first limit for height cylinder sleeve.
The utility model adds limit for height mechanism between the piston rod and base of oil cylinder, after limit for height cylinder sleeve is lifted to specified altitude assignment by piston rod, needle departs from port connection, at this moment oil cylinder inside starts release, the oil of oil cylinder inside gets back to fuel tank by the oil outlet of port connection under pressure, realize the automatic adjustment to oil pressure in oil cylinder, realize the protection to oil cylinder; This design reduces the Joint strenght requirement of base and cylinder sleeve, then can the lower material of selection intensity in producing, thus reach and reduce weight and the different design requirements such as to reduce costs.
Accompanying drawing explanation
Fig. 1 is height limiter structural representation described in the utility model embodiment;
Fig. 2 is that in the utility model embodiment, valve needle cover is located at the structural representation in port connection.
Detailed description of the invention
As depicted in figs. 1 and 2, a kind of height limiter of hydropneumatic jack cylinder, it is installed in oil cylinder 10, it comprises port connection 1 and needle 2, described port connection 1 arranges and is fixedly installed on the base 101 of oil cylinder below the piston rod of oil cylinder, the first limit for height cylinder sleeve 3 is installed with above port connection 1, port connection 1 and the first limit for height cylinder sleeve 3 form oil circuit path 4, described needle 2 is through oil circuit path 4, the sidewall of port connection 1 offers oil outlet 12, described oil outlet 12 is positioned on the oil circuit path 4 of process when needle 2 declines, the tail end 21 of needle is provided with a pad 7, needle 2 below pad 7 is arranged with spring 5 and trip ring 6, the tail end 21 of needle is by pad 7 and the second limit for height cylinder sleeve 8 sliding block joint, and the tail end of the second limit for height cylinder sleeve 8 and the 3rd limit for height cylinder sleeve 9 inwall sliding block joint, the 3rd limit for height cylinder sleeve 9 is socketed in the piston rod 102 of oil cylinder.
When rising under the effect of piston rod 102 at oil pressure, related the 3rd limit for height cylinder sleeve 9 that is socketed step by step and the second limit for height cylinder sleeve 8 of pulling rises, second limit for height cylinder sleeve 8 pulls pad 7 and the needle 2 that is fixedly connected with pad rises along wearing on path, and then make needle 2 depart from port connection 1, now oil cylinder 10 internal pressure is higher than tank pressure, the oil outlet 12 of hydraulic oil from port connection under the effect of oil cylinder internal pressure enters fuel tank, realize the pressure adjusting to oil cylinder, protection oil cylinder; After piston cylinder 102 drops to safe altitude, spring 5 is subject to downward pressure and pulls needle 2 to be inserted in port connection 1 and then shutoff oil circuit path 4 along oil circuit path 4 decline.
The quantity of the utility model limit for height cylinder sleeve is not limited to shown in embodiment, and its quantity can be selected according to the lift height of oil cylinder in real work.
The utility model is not limited to above-mentioned preferred forms; anyone can draw other various forms of products under enlightenment of the present utility model; no matter but any change is done in its shape or structure; every with please identical or akin technical scheme in basis, all drop within protection domain of the present utility model.
Claims (1)
1. the height limiter of a hydropneumatic jack cylinder, it is installed in the oil cylinder of hydropneumatic jack, it is characterized in that, it comprises port connection and needle, described port connection arranges and is fixedly installed on the base of oil cylinder below the piston rod of oil cylinder, ring-type first limit for height cylinder sleeve is installed with above port connection, port connection and the first limit for height cylinder sleeve form oil circuit path, described needle is through oil circuit path, the sidewall of port connection offers oil outlet, described oil outlet is positioned on the oil circuit path of process when needle declines, the tail end of needle is provided with a pad, needle below pad is arranged with spring and trip ring, at least one limit for height cylinder sleeve is socketed with step by step, the limit for height inboard wall of cylinder liner sliding block joint of the bottom in described pad and the limit for height cylinder sleeve that is socketed step by step between piston rod and the first limit for height cylinder sleeve between the piston rod of described oil cylinder and the first limit for height cylinder sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520436675.0U CN204778594U (en) | 2015-06-24 | 2015-06-24 | Limit for height device of hydropneumatic jack cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520436675.0U CN204778594U (en) | 2015-06-24 | 2015-06-24 | Limit for height device of hydropneumatic jack cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204778594U true CN204778594U (en) | 2015-11-18 |
Family
ID=54518686
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520436675.0U Active CN204778594U (en) | 2015-06-24 | 2015-06-24 | Limit for height device of hydropneumatic jack cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204778594U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107381416A (en) * | 2017-07-26 | 2017-11-24 | 合肥新坞岩机械科技有限公司 | The telescopic support platform of one kind lifting |
-
2015
- 2015-06-24 CN CN201520436675.0U patent/CN204778594U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107381416A (en) * | 2017-07-26 | 2017-11-24 | 合肥新坞岩机械科技有限公司 | The telescopic support platform of one kind lifting |
| CN107381416B (en) * | 2017-07-26 | 2019-10-22 | 明光鑫诚工业设计有限公司 | A kind of telescopic support platform of lifting |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 350000 workshop of building 3, No. 150, Xingye East Road, Mawei District, Fuzhou City, Fujian Province (in the pilot Free Trade Zone) Patentee after: Fuzhou Snite Hydraulic Co.,Ltd. Address before: Building 64, Zone A, Pushang Industrial Park, Jinshan Industrial Concentration Zone, No.1 Hongjiang Road, Jianxin Town, Cangshan District, Fuzhou City, Fujian Province, 350028 Patentee before: FUZHOU SNIT MECHANICAL EQUIPMENT Co.,Ltd. |
|
| CP03 | Change of name, title or address |