CN102032236A - Hydraulic cylinder of double piston rods - Google Patents

Hydraulic cylinder of double piston rods Download PDF

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Publication number
CN102032236A
CN102032236A CN2011100091100A CN201110009110A CN102032236A CN 102032236 A CN102032236 A CN 102032236A CN 2011100091100 A CN2011100091100 A CN 2011100091100A CN 201110009110 A CN201110009110 A CN 201110009110A CN 102032236 A CN102032236 A CN 102032236A
Authority
CN
China
Prior art keywords
piston
cylinder
chamber
hydraulic cylinder
cavity
Prior art date
Application number
CN2011100091100A
Other languages
Chinese (zh)
Inventor
薛洪权
奚金法
余彦冬
Original Assignee
江阴市洪腾机械有限公司
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 江阴市洪腾机械有限公司 filed Critical 江阴市洪腾机械有限公司
Priority to CN2011100091100A priority Critical patent/CN102032236A/en
Publication of CN102032236A publication Critical patent/CN102032236A/en

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Abstract

The invention relates to a hydraulic cylinder of double piston rods. The hydraulic cylinder comprises piston rods, guide sleeves, a cylinder body and a piston; the piston and the piston rods are arranged in the cylinder body, the piston is sleeved on the piston rods, and the guide sleeves are connected at two ends of the cylinder body by means of screw thread; the piston divides the cylinder body into a left cavity and a right cavity; and the cylinder body is provided with a left cavity oil port communicated with the left cavity and a right cavity oil port communicated with the right cavity respectively. The hydraulic cylinder is characterized in that: an annular groove is formed between the piston and the piston rods, steel balls are arranged in the annular groove, the piston is provided with a small hole, the small hole is communicated with the annular groove, a support ring is arranged between the cylinder body and the piston, and the support ring is positioned above the small hole. The hydraulic cylinder has the advantages of reliable working performance, long service life and capabilities of saving production raw materials and reducing the production cost.

Description

A kind of double piston-rod oil hydraulic cylinder

Technical field

The present invention relates to a kind of oil hydraulic cylinder, 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 object of the present invention is to provide a kind of reliable working performance, long service life, can save the double piston-rod oil hydraulic cylinder of producing raw material and reducing production costs.

Technology contents of the present invention 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 at 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 present invention is compared with prior art had is:

(1), make piston and piston rod into split-type structural among the present invention, 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 among the present invention, 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 among the present invention, 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 invention.

Specific embodiment

The present invention will be further described below in conjunction with concrete accompanying drawing.

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 at 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 invention and working procedure are as follows: left chamber 7 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.When hydraulic fluid port 6.1 oil-feeds of left chamber, oil pressure promotes piston 12, drives piston rod 1 and moves right together.The fluid in right chamber 13 is by right chamber hydraulic fluid port 6.2 released liquor cylinder pressures; When hydraulic fluid port 6.2 oil-feeds of right chamber, oil pressure promotes piston 12, drives piston rod 1 together to left movement.The fluid in chamber 7, a left side is by left chamber hydraulic fluid port 6.1 released liquor cylinder pressures.

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), be provided with steel ball (11) at circular groove (14), 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.
CN2011100091100A 2011-01-17 2011-01-17 Hydraulic cylinder of double piston rods CN102032236A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2011100091100A CN102032236A (en) 2011-01-17 2011-01-17 Hydraulic cylinder of double piston rods

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2011100091100A CN102032236A (en) 2011-01-17 2011-01-17 Hydraulic cylinder of double piston rods

Publications (1)

Publication Number Publication Date
CN102032236A true CN102032236A (en) 2011-04-27

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Family Applications (1)

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CN2011100091100A CN102032236A (en) 2011-01-17 2011-01-17 Hydraulic cylinder of double piston rods

Country Status (1)

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CN (1) CN102032236A (en)

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102240791A (en) * 2011-06-30 2011-11-16 哈尔滨工业大学 Device and method for hydraulic injection filled type extrusion cast forming of molten aluminum magnesium alloy
CN103174699A (en) * 2013-02-28 2013-06-26 韶关市伟光液压油缸有限公司 Servo hydraulic cylinder
CN103398036A (en) * 2013-08-21 2013-11-20 安徽永大农业科技发展有限公司 Hydraulic cylinder balancing device for high-temperature on-line sterilizer
CN103758817A (en) * 2014-02-17 2014-04-30 王建虎 Supporting cylinder and spackling machine
CN103775423A (en) * 2014-01-08 2014-05-07 宁波腾工精密机械制造有限公司 Fastening oil cylinder for die holder of cold heading machine
CN104043973A (en) * 2014-06-04 2014-09-17 洛阳利维科技有限公司 Device of force-multiplying concentric piston rod oil cylinder for moving heavy-load working table
CN104358733A (en) * 2014-10-14 2015-02-18 湖州环丰机械有限公司 Oil injection structure of oil cylinder
CN104373416A (en) * 2014-10-27 2015-02-25 安徽安簧机械股份有限公司 Hydraulic cylinder of steering axle of industrial vehicle and manufacturing technology thereof
CN104613044A (en) * 2015-01-28 2015-05-13 张汉桥 Hydraulic cylinder assembly
CN105650055A (en) * 2016-03-31 2016-06-08 江阴市洪腾机械有限公司 Dual-piston-rod hydraulic cylinder
CN105650054A (en) * 2016-03-31 2016-06-08 江阴市洪腾机械有限公司 Dual-support hydraulic oil cylinder
CN106050821A (en) * 2016-08-17 2016-10-26 四川英发太阳能科技有限公司 Auxiliary device for manufacturing polycrystalline silicon solar cells
CN106050796A (en) * 2016-08-17 2016-10-26 四川英发太阳能科技有限公司 Auxiliary device capable of changing photoelectric conversion efficiency of solar battery piece
CN106089846A (en) * 2016-08-17 2016-11-09 四川英发太阳能科技有限公司 A kind of elevating mechanism for manufacturing silica-based solar cell sheet
CN106151152A (en) * 2015-03-12 2016-11-23 盐城工业职业技术学院 Four station double acting hydraulic cylinders

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008116032A (en) * 2006-11-01 2008-05-22 Pubot Giken:Kk Boosting type hydraulic cylinder
CN101354053A (en) * 2008-09-19 2009-01-28 宁波市鄞州中天阀门有限公司 Hydraulic oil cylinder of automatic buffering return
CN201363335Y (en) * 2009-03-19 2009-12-16 南通贝特医药机械有限公司 Liquid flow through-type telescopic cylinder
CN201636310U (en) * 2010-01-29 2010-11-17 湖南特力液压有限公司 Piston mechanism for hydraulic cylinder

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008116032A (en) * 2006-11-01 2008-05-22 Pubot Giken:Kk Boosting type hydraulic cylinder
CN101354053A (en) * 2008-09-19 2009-01-28 宁波市鄞州中天阀门有限公司 Hydraulic oil cylinder of automatic buffering return
CN201363335Y (en) * 2009-03-19 2009-12-16 南通贝特医药机械有限公司 Liquid flow through-type telescopic cylinder
CN201636310U (en) * 2010-01-29 2010-11-17 湖南特力液压有限公司 Piston mechanism for hydraulic cylinder

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102240791A (en) * 2011-06-30 2011-11-16 哈尔滨工业大学 Device and method for hydraulic injection filled type extrusion cast forming of molten aluminum magnesium alloy
CN102240791B (en) * 2011-06-30 2013-02-13 哈尔滨工业大学 Device and method for hydraulic injection filled type extrusion cast forming of molten aluminum magnesium alloy
CN103174699A (en) * 2013-02-28 2013-06-26 韶关市伟光液压油缸有限公司 Servo hydraulic cylinder
CN103174699B (en) * 2013-02-28 2015-11-18 韶关市伟光液压油缸有限公司 A kind of servo hydraulic oil cylinder
CN103398036A (en) * 2013-08-21 2013-11-20 安徽永大农业科技发展有限公司 Hydraulic cylinder balancing device for high-temperature on-line sterilizer
CN103775423A (en) * 2014-01-08 2014-05-07 宁波腾工精密机械制造有限公司 Fastening oil cylinder for die holder of cold heading machine
CN103758817A (en) * 2014-02-17 2014-04-30 王建虎 Supporting cylinder and spackling machine
CN104043973B (en) * 2014-06-04 2016-08-17 洛阳利维科技有限公司 A kind of force-doubling type concentric piston rod oil cylinder moves the device of big load operation platform
CN104043973A (en) * 2014-06-04 2014-09-17 洛阳利维科技有限公司 Device of force-multiplying concentric piston rod oil cylinder for moving heavy-load working table
CN104358733A (en) * 2014-10-14 2015-02-18 湖州环丰机械有限公司 Oil injection structure of oil cylinder
CN104373416A (en) * 2014-10-27 2015-02-25 安徽安簧机械股份有限公司 Hydraulic cylinder of steering axle of industrial vehicle and manufacturing technology thereof
CN104613044A (en) * 2015-01-28 2015-05-13 张汉桥 Hydraulic cylinder assembly
CN106151152A (en) * 2015-03-12 2016-11-23 盐城工业职业技术学院 Four station double acting hydraulic cylinders
CN105650055A (en) * 2016-03-31 2016-06-08 江阴市洪腾机械有限公司 Dual-piston-rod hydraulic cylinder
CN105650054A (en) * 2016-03-31 2016-06-08 江阴市洪腾机械有限公司 Dual-support hydraulic oil cylinder
CN106050796A (en) * 2016-08-17 2016-10-26 四川英发太阳能科技有限公司 Auxiliary device capable of changing photoelectric conversion efficiency of solar battery piece
CN106089846A (en) * 2016-08-17 2016-11-09 四川英发太阳能科技有限公司 A kind of elevating mechanism for manufacturing silica-based solar cell sheet
CN106050821A (en) * 2016-08-17 2016-10-26 四川英发太阳能科技有限公司 Auxiliary device for manufacturing polycrystalline silicon solar cells
CN106050796B (en) * 2016-08-17 2018-07-06 四川英发太阳能科技有限公司 A kind of ancillary equipment that can change solar battery sheet photoelectric conversion efficiency
CN106089846B (en) * 2016-08-17 2018-07-06 四川英发太阳能科技有限公司 A kind of elevating mechanism for being used to manufacture silica-based solar cell piece

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Application publication date: 20110427

C02 Deemed withdrawal of patent application after publication (patent law 2001)