CN201982408U - Double piston rod hydraulic cylinder - Google Patents
Double piston rod hydraulic cylinder Download PDFInfo
- Publication number
- CN201982408U CN201982408U CN2011200129762U CN201120012976U CN201982408U CN 201982408 U CN201982408 U CN 201982408U CN 2011200129762 U CN2011200129762 U CN 2011200129762U CN 201120012976 U CN201120012976 U CN 201120012976U CN 201982408 U CN201982408 U CN 201982408U
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- piston
- cylinder body
- piston rod
- hydraulic cylinder
- cylinder
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Abstract
The utility model relates to a double piston rod hydraulic cylinder, which comprises piston rods, a guide sleeve, a cylinder body and a piston, wherein the piston and the piston rods are mounted in the cylinder body; the piston is sleeved on the piston rods; the guide sleeve is connected at the two ends of the cylinder body through threads; the cylinder body is divided into a left cavity and a right cavity through the piston; and a left cavity oil port communicated with the left cavity and a right cavity oil port communicated with the right cavity are formed on the cylinder body respectively. The double piston rod hydraulic cylinder is characterized in that an annular groove is arranged between the piston and the piston rods and a steel ball is arranged in the annular groove; a small hole is formed on the piston and communicated with the annular groove; and a bearing ring is mounted between the cylinder body and the piston and mounted above the bearing ring. The utility model has the advantages that double-piston rod hydraulic cylinder has reliably working performance and long service life, and can save production raw materials and reduce production cost.
Description
Technical field
The utility model relates to a kind of oil hydraulic cylinder, and it adopts a double piston-rod oil hydraulic cylinder.
Background technique
The double piston-rod oil hydraulic cylinder is the executive component in the hydraulic system, it usually with hydraulic oil as working medium, can convert the hydraulic pressure of liquid to straight-line mechanical energy.The double piston-rod oil hydraulic cylinder is made up of several parts such as cylinder body, piston rod, piston, guide sleeve and sealing systems usually.At present, the double piston-rod oil hydraulic cylinder is extensively applied to fields such as industrial or agricultural and Aero-Space.Especially on vehicles such as fork truck, the double piston-rod oil hydraulic cylinder is all adopted in turning to of wheel usually.This oil hydraulic cylinder, traditional design all is designed to an integral body with piston and piston rod, this design is relatively good from structural strength and sealability, but because the processing technology of unitary piston rod is complicated, and stock utilization is lower, be difficult to produce in enormous quantities, cause the oil hydraulic cylinder cost too high.Now, in some new designs, usually piston is welded on the piston rod, and then whole processing.Although this welded structure has been saved material, owing to increased welding requirements, make processing technology complicated more, so the cost fall of oil hydraulic cylinder and little.And, because inevitably there is defective in weld seam, so the hidden danger that leak mutually in oil cylinder two chambeies and the weld seam drawing crack was lost efficacy in use often occurs.
Summary of the invention
At above-mentioned shortcoming, the purpose of this utility model is to provide a kind of reliable working performance, long service life, can saves the double piston-rod oil hydraulic cylinder of producing raw material and reducing production costs.
Technology contents of the present utility model is that a kind of double piston-rod oil hydraulic cylinder comprises piston rod, guide sleeve, cylinder body and piston; Piston and piston rod are installed in the cylinder body, and piston sleeve is contained on the piston rod, and guide sleeve is by being threaded in the cylinder body two ends; Piston is divided into left chamber and right chamber with cylinder body; The left chamber hydraulic fluid port that is communicated with left chamber, the right chamber hydraulic fluid port that is communicated with right chamber are arranged respectively on cylinder body; It is characterized in that being provided with circular groove between piston and piston rod, be provided with steel ball in circular groove, be provided with an aperture on piston, aperture communicates with circular groove, between cylinder body and piston bearing ring is housed, and bearing ring is contained in the aperture top.
Steel ball is filled by aperture in the circular groove between piston and the piston rod in above-mentioned double piston-rod oil hydraulic cylinder; Simultaneously, bearing ring covers the inlet of aperture, prevents that steel ball from dropping out from aperture, pulls cylinder body; Bearing ring can prevent that piston and cylinder body from contacting, and avoids the two to pull mutually.
The advantage that the utility model is compared with prior art had is:
(1), make piston and piston rod into split-type structural in the utility model, not only save raw material, and improved the technology capability of piston rod, reduced the cost of oil hydraulic cylinder.
(2), piston adopts a circle steel ball to be connected with piston rod in the utility model, steel ball is stressed even, and piston is connected reliably with piston rod.
(3), adopt nonmetallic bracing ring to support between piston and the cylinder body in the utility model, prevent to pull mutually between the metal, improved the working life of product; After the bearing ring wearing and tearing, provide for simple replacement of new support ring.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Embodiment
Below in conjunction with concrete accompanying drawing the utility model is described further.
As shown in Figure 1, a kind of double piston-rod oil hydraulic cylinder comprises piston rod 1, guide sleeve 3, cylinder body 6 and piston 12; Piston 12 and piston rod 1 are installed in the cylinder body 6, and piston 12 is sleeved on the piston rod 1, and guide sleeve 3 is by being threaded in cylinder body 6 two ends; Piston 12 is divided into left chamber 7 and right chamber 13 with cylinder body 6; The left chamber hydraulic fluid port 6.1 that is communicated with left chamber 7, the right chamber hydraulic fluid port 6.2 that is communicated with right chamber 13 are arranged respectively on cylinder body 6; It is characterized in that between piston 12 and piston rod 1, being provided with circular groove 14, be provided with steel ball 11 in circular groove 14, be provided with an aperture 15 on piston 12, aperture 15 communicates with circular groove 14, between cylinder body 6 and piston 12 bearing ring 10 is housed, bearing ring 10 is contained in aperture 15 tops; O shape is enclosed the gap between 9 packed-piston bars 1 and the piston 12, prevents that oil cylinder two chambeies from scurrying oil mutually; Gap between seal ring 8 packed-pistons 12 and the cylinder body 6 prevents that oil cylinder two chambeies from scurrying oil mutually; O shape circle 5 prevents that hydraulic oil from leaking from guide sleeve 3 screw threads, and seal ring 4 prevents that hydraulic oil is from the clearance leakage between piston rod 1 and the guide sleeve 3; Dust ring 2 is used for scraping the dust on lower piston rod 1 exposed surface, prevents to bring into oil cylinder inside; Chamber 7, a left side is by left chamber hydraulic fluid port 6.1 turnover hydraulic oil, and right chamber 13 is by right chamber hydraulic fluid port 6.2 turnover hydraulic oil.
Working principle of the present utility model and working procedure are as follows:
Claims (1)
1. a double piston-rod oil hydraulic cylinder comprises piston rod (1), guide sleeve (3), cylinder body (6) and piston (12); Piston (12) and piston rod (1) are installed in the cylinder body (6), and piston (12) is sleeved on the piston rod (1), and guide sleeve (3) is by being threaded in cylinder body (6) two ends; Piston (12) is divided into left chamber (7) and right chamber (13) with cylinder body (6); The left chamber hydraulic fluid port (6.1) that is communicated with left chamber (7), the right chamber hydraulic fluid port (6.2) that is communicated with right chamber (13) are arranged respectively on cylinder body (6); It is characterized in that between piston (12) and piston rod (1), being provided with circular groove (14), in circular groove (14), be provided with steel ball (11), on piston (12), be provided with an aperture (15), aperture (15) communicates with circular groove (14), between cylinder body (6) and piston (12) bearing ring (10) is housed, bearing ring (10) is contained in aperture (15) top.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200129762U CN201982408U (en) | 2011-01-17 | 2011-01-17 | Double piston rod hydraulic cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200129762U CN201982408U (en) | 2011-01-17 | 2011-01-17 | Double piston rod hydraulic cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201982408U true CN201982408U (en) | 2011-09-21 |
Family
ID=44609870
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200129762U Expired - Fee Related CN201982408U (en) | 2011-01-17 | 2011-01-17 | Double piston rod hydraulic cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201982408U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102434527A (en) * | 2011-12-01 | 2012-05-02 | 宁波千普机械制造有限公司 | Hydraulic cylinder |
| CN106438557A (en) * | 2016-10-10 | 2017-02-22 | 合肥协力液压科技有限公司 | Hydraulic cylinder |
| CN107725526A (en) * | 2016-08-12 | 2018-02-23 | 比亚迪股份有限公司 | Hydraulic steering cylinder and there is its vehicle |
| WO2023123606A1 (en) * | 2021-12-30 | 2023-07-06 | 广州晶品智能压塑科技股份有限公司 | Embedded cylinder structure |
-
2011
- 2011-01-17 CN CN2011200129762U patent/CN201982408U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102434527A (en) * | 2011-12-01 | 2012-05-02 | 宁波千普机械制造有限公司 | Hydraulic cylinder |
| CN102434527B (en) * | 2011-12-01 | 2014-03-26 | 宁波千普机械制造有限公司 | Hydraulic cylinder |
| CN107725526A (en) * | 2016-08-12 | 2018-02-23 | 比亚迪股份有限公司 | Hydraulic steering cylinder and there is its vehicle |
| CN107725526B (en) * | 2016-08-12 | 2022-02-08 | 比亚迪股份有限公司 | Steering hydraulic cylinder and vehicle with same |
| CN106438557A (en) * | 2016-10-10 | 2017-02-22 | 合肥协力液压科技有限公司 | Hydraulic cylinder |
| WO2023123606A1 (en) * | 2021-12-30 | 2023-07-06 | 广州晶品智能压塑科技股份有限公司 | Embedded cylinder structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110921 Termination date: 20140117 |