CN104295556A - Double-stroke hydraulic cylinder - Google Patents

Double-stroke hydraulic cylinder Download PDF

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Publication number
CN104295556A
CN104295556A CN201410431944.4A CN201410431944A CN104295556A CN 104295556 A CN104295556 A CN 104295556A CN 201410431944 A CN201410431944 A CN 201410431944A CN 104295556 A CN104295556 A CN 104295556A
Authority
CN
China
Prior art keywords
cylinder
hydraulic cylinder
guide
piston rod
rod
Prior art date
Application number
CN201410431944.4A
Other languages
Chinese (zh)
Inventor
肖培青
袁隆秀
曹志明
Original Assignee
合肥海德数控液压设备有限公司
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 合肥海德数控液压设备有限公司 filed Critical 合肥海德数控液压设备有限公司
Priority to CN201410431944.4A priority Critical patent/CN104295556A/en
Publication of CN104295556A publication Critical patent/CN104295556A/en

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B15/00Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/08Characterised by the construction of the motor unit
    • F15B15/14Characterised by the construction of the motor unit of the straight-cylinder type
    • F15B15/16Characterised by the construction of the motor unit of the straight-cylinder type of the telescopic type
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B15/00Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/08Characterised by the construction of the motor unit
    • F15B15/14Characterised by the construction of the motor unit of the straight-cylinder type
    • F15B15/1404Characterised by the construction of the motor unit of the straight-cylinder type in clusters, e.g. multiple cylinders in one block

Abstract

The invention relates to a double-stroke hydraulic cylinder which comprises a main cylinder body arranged in a lower cross beam of a hydraulic machine and an auxiliary hydraulic cylinder body integrated at the end of a piston rod of the main hydraulic cylinder body. According to the technical scheme, the hydraulic oil cylinder which is long in stroke and is limited by mounting positions is achieved through a segmented movement mode, the requirements of different product processes are met, the use function of the hydraulic machine is expanded, and the utilization rate of the hydraulic machine is improved.

Description

A kind of double-stroke oil hydraulic cylinder

Technical field

The present invention relates to a kind of oil hydraulic cylinder, be specifically related to a kind of double-stroke oil hydraulic cylinder.

Background technique

At present, known in the cylinder structure of various hydraulic press, the stroke of oil cylinder is all one-strokes, like this for the oil cylinder that range demands is long, complicated owing to must make by the restriction of mounting point to manufacture and design, cause the waste of the energy, also add cost of production.

Summary of the invention

The object of the present invention is to provide a kind of double-stroke oil hydraulic cylinder, this double-stroke oil hydraulic cylinder can segment movement, to meet different manufacturing technique requirents, expands the using function of hydraulic press, improves the utilization ratio of hydraulic press.

For achieving the above object, present invention employs following technological scheme: comprise the master hydraulic cylinder being arranged on hydraulic press bottom end rail inside and the secondary oil hydraulic cylinder being integrated in master hydraulic cylinder piston rod end.

Described master hydraulic cylinder comprises cylinder body, piston rod is provided with in cylinder body, the cylinder mouth place of cylinder body is provided with the first guide sleeve be connected with cylinder body screw, the underside of the piston head of piston rod is provided with the first guide rod play the guiding role, the first described guide rod also overhangs outside at cylinder body through the bottom of cylinder body, be sealed and matched between first guide rod and cylinder body, described cylinder body is provided with rising chamber filler opening and decline chamber filler opening, and the end that the first described guide rod overhangs outside cylinder body is also connected with guide structure.

The end of described piston rod is provided with the step hole for installing secondary oil hydraulic cylinder, described secondary oil hydraulic cylinder comprises anchor post, is set on anchor post and the plunger that can move up and down along anchor post, described anchor post is fixed by screws in the step hole of piston rod, the end of plunger is provided with gland, gland inside is provided with plane bearing, the 3rd guide sleeve is provided with between described piston rod and plunger, form the stroke oil pocket of secondary oil hydraulic cylinder in the end step hole of piston rod, described piston rod is provided with the oil inlet and outlet be connected with stroke oil pocket.

Described guide structure comprises the second guide rod and the second guide sleeve, described cylinder base is provided with support, second guide rod and the second guide sleeve rack-mount, one end of second guide sleeve with to be set on the second guide rod and can to move up and down along the second guide rod, the other end of the second guide sleeve and the end of the first guide rod are connected.

As shown from the above technical solution, the present invention adopts the form of segment movement to realize by stroke is longer and by mounting point restriction hydraulic jack, to meet the requirement of different product technique, expand the using function of hydraulic press, improve the utilization ratio of hydraulic press.

Accompanying drawing explanation

Fig. 1 is structural representation of the present invention;

Fig. 2 is the structural representation in home position of the present invention;

Structural representation when Fig. 3 is master hydraulic cylinder action of the present invention;

Structural representation when Fig. 4 is the oil hydraulic cylinder action of the present invention's pair.

Embodiment

Below in conjunction with accompanying drawing, the present invention will be further described:

A kind of double-stroke oil hydraulic cylinder as shown in Figure 1, comprises the master hydraulic cylinder being arranged on hydraulic press bottom end rail 100 inside and the secondary oil hydraulic cylinder being integrated in master hydraulic cylinder piston rod end.

Further, master hydraulic cylinder comprises cylinder body 1, piston rod 2 is provided with in cylinder body 1, the cylinder mouth place of cylinder body 1 is provided with the first guide sleeve 3 be connected with cylinder body 1 screw, the underside of the piston head of piston rod 2 is provided with the first guide rod 4 play the guiding role, first guide rod 4 also overhangs outside at cylinder body 1 through the bottom of cylinder body 1, be sealed and matched between first guide rod 4 and cylinder body 1, cylinder body 1 is provided with the end that rising chamber filler opening 5 and decline chamber filler opening 6, first guide rod 4 overhang outside cylinder body 1 and is also connected with guide structure.

Further, the end of piston rod 2 is provided with the step hole for installing secondary oil hydraulic cylinder, secondary oil hydraulic cylinder comprises anchor post 7, is set on anchor post 7 and the plunger 8 that can move up and down along anchor post 7, anchor post 7 is fixed by screws in the step hole of piston rod 2, the end of plunger 8 is provided with gland 9, gland 9 inside is provided with plane bearing 10, the 3rd guide sleeve 11 is provided with between piston rod 2 and plunger 8, form the stroke oil pocket of secondary oil hydraulic cylinder in the end step hole of piston rod 2, piston rod 2 is provided with the oil inlet and outlet 12 be connected with stroke oil pocket.

Further, guide structure comprises the second guide rod 13 and the second guide sleeve 14, support 15 is provided with bottom cylinder body 1, second guide rod 13 and the second guide sleeve 14 are arranged on support 15, one end of second guide sleeve 14 with to be set on the second guide rod 13 and can to move up and down along the second guide rod 13, the other end of the second guide sleeve 14 and the end of the first guide rod 4 are connected.

Working principle of the present invention is:

As shown in Figure 2, in an initial condition, hydraulic system carrys out the oily oil pocket entering master hydraulic cylinder to original state, and promoting piston rod needs to move upward according to stroke, arrives and needs to be stopped by electric elements sender during position, realize the requirement of first stroke, as shown in Figure 3; When needs realize second stroke, carry out oily control plunger by hydraulic system and move upward as required, realize the requirement of second stroke, as shown in Figure 4.

Double-stroke oil hydraulic cylinder of the present invention, needs are realized compared with Long travel and by the hydraulic jack of mounting point restriction by the segment movement of the first stroke of master hydraulic cylinder and the second stroke of secondary oil hydraulic cylinder, meet the requirement of different product technique, expand the using function of hydraulic press, improve the utilization ratio of hydraulic press.

Above-described embodiment is described the preferred embodiment of the present invention; not scope of the present invention is limited; under not departing from the present invention and designing the prerequisite of spirit; the various distortion that those of ordinary skill in the art make technological scheme of the present invention and improvement, all should fall in protection domain that claims of the present invention determines.

Claims (4)

1. a double-stroke oil hydraulic cylinder, is characterized in that: comprise the secondary oil hydraulic cylinder being arranged on the inner master hydraulic cylinder of hydraulic press bottom end rail (100) and being integrated in master hydraulic cylinder piston rod end.
2. double-stroke oil hydraulic cylinder according to claim 1, it is characterized in that: described master hydraulic cylinder comprises cylinder body (1), piston rod (2) is provided with in cylinder body (1), the cylinder mouth place of cylinder body (1) is provided with the first guide sleeve (3) be connected with cylinder body (1) screw, the underside of the piston head of piston rod (2) is provided with the first guide rod (4) play the guiding role, described the first guide rod (4) also overhangs outside at cylinder body (1) through the bottom of cylinder body (1), be sealed and matched between first guide rod (4) and cylinder body (1), described cylinder body (1) is provided with rising chamber filler opening (5) and decline chamber filler opening (6), described the first guide rod (4) overhangs and is also connected with guide structure in cylinder body (1) end outward.
3. double-stroke oil hydraulic cylinder according to claim 2, it is characterized in that: the end of described piston rod (2) is provided with the step hole for installing secondary oil hydraulic cylinder, described secondary oil hydraulic cylinder comprises anchor post (7), be set in the upper plunger (8) that also can move up and down along anchor post (7) of anchor post (7), described anchor post (7) is fixed by screws in the step hole of piston rod (2), the end of plunger (8) is provided with gland (9), gland (9) inside is provided with plane bearing (10), the 3rd guide sleeve (11) is provided with between described piston rod (2) and plunger (8), the stroke oil pocket of secondary oil hydraulic cylinder is formed in the end step hole of piston rod (2), described piston rod (2) is provided with the oil inlet and outlet (12) be connected with stroke oil pocket.
4. double-stroke oil hydraulic cylinder according to claim 2, it is characterized in that: described guide structure comprises the second guide rod (13) and the second guide sleeve (14), described cylinder body (1) bottom is provided with support (15), second guide rod (13) and the second guide sleeve (14) are arranged on support (15), one end of second guide sleeve (14) is with to be set in the second guide rod (13) upper and can move up and down along the second guide rod (13), and the other end of the second guide sleeve (14) and the end of the first guide rod (4) are connected.
CN201410431944.4A 2014-08-29 2014-08-29 Double-stroke hydraulic cylinder CN104295556A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201410431944.4A CN104295556A (en) 2014-08-29 2014-08-29 Double-stroke hydraulic cylinder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201410431944.4A CN104295556A (en) 2014-08-29 2014-08-29 Double-stroke hydraulic cylinder

Publications (1)

Publication Number Publication Date
CN104295556A true CN104295556A (en) 2015-01-21

Family

ID=52315427

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201410431944.4A CN104295556A (en) 2014-08-29 2014-08-29 Double-stroke hydraulic cylinder

Country Status (1)

Country Link
CN (1) CN104295556A (en)

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6470789B1 (en) * 1999-12-10 2002-10-29 Smc Corporation Dual stroke cylinder
CN201420728Y (en) * 2009-06-09 2010-03-10 天津市天二锻压机床有限公司 Precision force through rod oil cylinder with low pressure and high pressure intensity
CN201843857U (en) * 2010-11-11 2011-05-25 厦门大学 Hydraulic cylinder with extension-controllable piston rods
CN102582100A (en) * 2012-02-17 2012-07-18 天津市天锻压力机有限公司 Unidirectional plunger type oil cylinder of hydraulic press
CN202545414U (en) * 2012-02-29 2012-11-21 成都市新筑路桥机械股份有限公司 Automatic concrete piston retreating buffer throttling device for pumping oil cylinder
CN202971404U (en) * 2012-12-19 2013-06-05 山东富力世液压油缸有限公司 Quick stamping cylinder with embedded guide rotation-proof device
CN203009447U (en) * 2012-12-26 2013-06-19 徐州川一工程机械有限公司 Mechanical compensation type hydraulic oil cylinder
CN103603975A (en) * 2013-11-26 2014-02-26 湖南特力液压有限公司 Check valve with push rod and multi-stage hydraulic cylinder

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6470789B1 (en) * 1999-12-10 2002-10-29 Smc Corporation Dual stroke cylinder
CN201420728Y (en) * 2009-06-09 2010-03-10 天津市天二锻压机床有限公司 Precision force through rod oil cylinder with low pressure and high pressure intensity
CN201843857U (en) * 2010-11-11 2011-05-25 厦门大学 Hydraulic cylinder with extension-controllable piston rods
CN102582100A (en) * 2012-02-17 2012-07-18 天津市天锻压力机有限公司 Unidirectional plunger type oil cylinder of hydraulic press
CN202545414U (en) * 2012-02-29 2012-11-21 成都市新筑路桥机械股份有限公司 Automatic concrete piston retreating buffer throttling device for pumping oil cylinder
CN202971404U (en) * 2012-12-19 2013-06-05 山东富力世液压油缸有限公司 Quick stamping cylinder with embedded guide rotation-proof device
CN203009447U (en) * 2012-12-26 2013-06-19 徐州川一工程机械有限公司 Mechanical compensation type hydraulic oil cylinder
CN103603975A (en) * 2013-11-26 2014-02-26 湖南特力液压有限公司 Check valve with push rod and multi-stage hydraulic cylinder

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PB01 Publication
C06 Publication
SE01 Entry into force of request for substantive examination
C10 Entry into substantive examination
WD01 Invention patent application deemed withdrawn after publication

Application publication date: 20150121

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