CN202900830U - Sequence hydraulic cylinder - Google Patents

Sequence hydraulic cylinder Download PDF

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Publication number
CN202900830U
CN202900830U CN 201220486823 CN201220486823U CN202900830U CN 202900830 U CN202900830 U CN 202900830U CN 201220486823 CN201220486823 CN 201220486823 CN 201220486823 U CN201220486823 U CN 201220486823U CN 202900830 U CN202900830 U CN 202900830U
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CN
China
Prior art keywords
piston
oil
cylinder
stage piston
push rod
Prior art date
Application number
CN 201220486823
Other languages
Chinese (zh)
Inventor
张海平
Original Assignee
张海平
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 张海平 filed Critical 张海平
Priority to CN 201220486823 priority Critical patent/CN202900830U/en
Application granted granted Critical
Publication of CN202900830U publication Critical patent/CN202900830U/en

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Abstract

The utility model relates to a sequence telescopic hydraulic cylinder which comprises a cylinder base, a cylinder barrel and a cylinder cover, wherein one-level piston and a two-level piston are both installed in the cylinder barrel, a second oil cavity is formed between the one-level piston and the two-level piston, a third oil cavity is formed between the two-level piston and the cylinder cover, at least one oil-passing hole communicated with the second oil cavity and the third oil cavity is formed in the one-level piston, at least one installation hole is further formed in the one-level piston, the installation hole is a big-end-up stepped hole, a push rod and a spring are installed in each installation hole, the lower end of the push rod is provided with an end head, the diameter of the end head is smaller than that of a big hole of the installation holes, the push rod penetrates the spring, the lower end of the spring is pressed on the end head, the upper end of the spring is pressed on a stepped surface of the installation holes, the upper end of the push rod is fixedly connected with a sealing plate, the sealing plate is arranged at the upper end of the one-level piston, and the sealing plate can seal up the oil-passing hole. The sequence hydraulic cylinder is little in consumption and high in working efficiency.

Description

The order oil hydraulic cylinder

Technical field

The utility model relates to a kind of hydraulic pressure installation, particularly relates to a kind of sequential telescopic formula oil hydraulic cylinder.

Background technique

On a lot of engineering machinery, because multistage hydraulic cylinder is more and more adopted in the restriction of installing space.In some cases, also need the piston rods at different levels of oil hydraulic cylinder sequentially to stretch out, the order oil hydraulic cylinder of prior art, as shown in Figure 1, comprise cylinder seat 1 ', cylinder barrel 2 ' and cylinder cap 3 ', cylinder barrel 2 ' is fixedly mounted on the cylinder seat 1 ', cylinder cap 3 ' is fixedly mounted on the upper end of cylinder barrel 2 ', first stage piston 4 ' and second piston 5 ' are installed in the cylinder barrel 2 ', second piston 5 ' is near cylinder seat 1 ', be installed with first stage piston bar 6 ' in the upper end of first stage piston 4 ', cylinder cap 3 ' is passed in the upper end of first stage piston bar 6 ', first stage piston 4 ' and first stage piston bar 6 ' offer the through hole that is interconnected along the axial direction of first stage piston 4 ', second piston 5 ' upper end is installed with second piston rod 7 ', second piston rod 7 ' passes first stage piston 4 ' and first stage piston bar 6 ' successively, offer the inner chamber that is communicated with return opening 12 ' on the second piston rod 7 ', consist of the first oil pocket 8 ' between cylinder seat 1 ' and the second piston 5 ', consist of the second oil pocket 9 ' between first stage piston 4 ' and the second piston 5 ', consist of the 3rd oil pocket 10 ' between second piston 5 ' and the cylinder cap 3 ', wherein the first oil pocket 8 ' is communicated with filler opening 11 ', the second oil pocket 9 ' is communicated with the inner chamber of second piston rod 7 ', the second oil pocket 9 ' is communicated with the 3rd oil pocket 10 ', and wherein the frictional force of first stage piston 4 ' and cylinder barrel 2 ' inwall is greater than the frictional force of second piston rod 7 ' with first stage piston 4 '.When this oil hydraulic cylinder uses, in the first oil pocket 8 ', pass into high pressure oil by filler opening 11 ', second piston 5 ' is under the promotion of high pressure oil, move up, because the frictional force between first stage piston 4 ' and the cylinder barrel 2 ' is greater than the frictional force of second piston rod 7 ' with first stage piston 4 ', so behind first stage piston 4 ' the move distance L ', second piston 5 ' drives first stage piston 4 ' and moves together, thereby the order that realizes second piston rod 7 ' and first stage piston bar 6 ' is stretched out.But the said sequence oil hydraulic cylinder stretches out for the order that realizes piston rod, needs to increase the frictional force between first stage piston 4 ' and the cylinder barrel 2 ', thereby causes the power consumption of oil hydraulic cylinder larger.

The model utility content

The technical problems to be solved in the utility model provides the little order oil hydraulic cylinder of a kind of power consumption, can raising the working efficiency of order oil hydraulic cylinder.

The utility model order oil hydraulic cylinder, comprise the cylinder seat, cylinder barrel and cylinder cap, first stage piston and second piston are installed in the cylinder barrel, second piston is near the cylinder seat, be installed with the first stage piston bar in the upper end of first stage piston, the second piston upper end is installed with second piston rod, consist of the first oil pocket between cylinder seat and the second piston, consist of the second oil pocket between first stage piston and the second piston, consist of the 3rd oil pocket between second piston and the cylinder cap, wherein the first oil pocket is communicated with filler opening, the second oil pocket is communicated with oil outlet, offer the oil through that at least one is communicated with the second oil pocket and the 3rd oil pocket at first stage piston, on first stage piston, also offer at least one mounting hole, mounting hole is lower large little step hole, a push rod and a spring all are installed in each mounting hole, the lower end of push rod has the termination, the diameter of termination is less than the diameter of the macropore of mounting hole, push rod passes spring, the lower end of spring is pressed on the termination, and the upper end of spring is pressed on the step surface of mounting hole, and the upper end of push rod is fixedly connected with on the sealing plate, sealing plate is positioned at the upper end of first stage piston, and sealing plate can seal oil through.

The utility model order oil hydraulic cylinder, wherein said mounting hole is 3, the axis that centers on first stage piston is evenly arranged.

The utility model order oil hydraulic cylinder, wherein said oil through is 3, the axis that centers on first stage piston is evenly arranged.

The utility model order oil hydraulic cylinder difference from prior art is that this practicality is newly by offering mounting hole at first stage piston, in the upper end of first stage piston sealing plate is set with push rod by mounting hole, simultaneously at push rod spring is installed, when this oil hydraulic cylinder uses, in the first oil pocket, pass into high pressure oil by filler opening, second piston is under the promotion of high pressure oil, move up, at this moment, push rod is under the pre-pressure of the spring effect, make sealing plate be close to the upper-end surface of first stage piston, oil through is sealed, the 3rd oil pocket forms a Seal cage, first stage piston is motionless under the effect of Seal cage oil pressure, the second piston stroke L that continues to move upward, at this moment, the second piston rod extrusion is L, the first stage piston bar is motionless, when continuing to move upward under the effect of second piston at high pressure oil, the upper-end surface of second piston contacts with termination on the push rod, the elastic force that the promotion push rod overcomes spring moves upward, the sealing plate that is connected with push rod moves upward thereupon, thereby oil through is opened, when second piston promotion push rod upwards moved stroke K, the 3rd oil pocket was communicated with fully with the second oil pocket, and the hydraulic oil in the 3rd oil pocket is by the second oil pocket oil sump tank, simultaneously, second piston contacts with first stage piston, and second piston promotes first stage piston and moves upward together, and the first stage piston bar begins to protrude upward, the relative first stage piston bar of second piston rod is motionless, thereby the order that realizes piston rod is stretched out.Because when second piston rod stretches out, be to make the 3rd oil pocket form Seal cage by sealing plate, realize that first stage piston is motionless, so can between first stage piston and cylinder barrel, very little frictional force can be set, thereby realize the power consumption of reduction order oil hydraulic cylinder, improve its working efficiency.

The utility model is described in further detail below in conjunction with accompanying drawing.

Description of drawings

Fig. 1 is that the master of the order oil hydraulic cylinder of prior art looks sectional view;

Fig. 2 is that the master of the utility model order oil hydraulic cylinder looks sectional view.

Embodiment

As shown in Figure 2, the utility model order oil hydraulic cylinder comprises cylinder seat 1, cylinder barrel 2 and cylinder cap 3, the lower end of cylinder barrel 2 is welded on the cylinder seat 1, the upper end of cylinder barrel 2 is installed with cylinder cap 3, be provided with seal ring between cylinder barrel 2 and the cylinder cap 3, first stage piston 4 and second piston 5 are installed in cylinder barrel 2, between the circumferential surface of first stage piston 4 and second piston 5 and the cylinder barrel 2 seal ring are installed all.Second piston 5 is positioned at the below of first stage piston 4, near cylinder seat 1 position.

Be welded with first stage piston bar 6 in the upper end of first stage piston 4, cylinder cap 3 is passed in the upper end of first stage piston bar 6, all the axis along first stage piston 4 offers the through hole that is interconnected on first stage piston 4 and first stage piston bar 6, and the through hole on the first stage piston 4 is slightly less than the through hole on the first stage piston bar 6.Be installed with second piston rod 7 in second piston 5 upper ends, the upper end of second piston rod 7 is sequentially passed the through hole on first stage piston 4 and the first stage piston bar 6 successively.

Wherein consist of the first oil pocket 8 between cylinder seat 1 and the second piston 5, consist of the second oil pocket 9 between first stage piston 4 and the second piston 5, consist of the 3rd oil pocket 10 between second piston 5 and the cylinder cap 3.The first oil pocket 8 is communicated with filler opening 12, and the second oil pocket 9 is communicated with oil outlet 11 by the oilhole of offering on the second piston rod 7.Offering three 13, three oil throughs of oil through 13 that are communicated with the second oil pockets 9 and the 3rd oil pocket 10 at first stage piston 4 is evenly arranged around the axis of first stage piston 4.On first stage piston 4, also offer 14, three mounting holes 14 of three mounting holes and also be evenly arranged space between mounting hole 14 and the oil through 13 around the axis of first stage piston 4.Each mounting hole 14 is lower large little step hole, at each mounting hole 14 an interior push rod 15 and spring 16 of all being equipped with, the lower end of push rod 15 has termination 151, the diameter of termination 151 is slightly less than the diameter of the macropore of mounting hole 14, push rod 15 passes spring 16, the lower end of spring 16 is pressed on the termination 151, the upper end of spring 16 is pressed on the step surface of mounting hole 14, the upper end of push rod 15 is fixedly connected with on the sealing plate 17 by screw thread, sealing plate 17 is positioned at the upper end of first stage piston 4, spring 16 is provided with precompression, makes sealing plate 17 be close to the upper-end surface of first stage piston 4, thereby sealing plate 17 is with 13 sealings of three oil throughs.

When the utility model order oil hydraulic cylinder uses, in the first oil pocket 8, pass into high pressure oil by filler opening 12, second piston 5 is under the promotion of high pressure oil, move up, at this moment, push rod 15 is under spring 16 precompression effects, make sealing plate 17 be close to the upper-end surface of first stage piston 4, with oil through 13 sealings, the 3rd oil pocket 10 forms a Seal cage, first stage piston 4 is motionless under the effect of Seal cage oil pressure, the second piston 5 stroke L that continues to move upward, at this moment, second piston rod 7 extrusions are L, first stage piston bar 6 is motionless, when continuing to move upward under the effect of second piston 5 at high pressure oil, the upper-end surface of second piston 5 contacts with termination 151 on the push rod 15, the elastic force that promotion push rod 15 overcomes spring 16 moves upward, the sealing plate 17 that is connected with push rod 15 moves upward thereupon, thereby oil through 13 is opened, when second piston 5 promotion push rods 15 upwards move stroke K, termination 151 on the push rod 15 is sunk in the mounting hole 14, and the 3rd oil pocket 10 is communicated with fully with the second oil pocket 9, and the hydraulic oil in the 3rd oil pocket 10 is by the second oil pocket 9 oil sump tanks, simultaneously, second piston 5 contacts with first stage piston 4, and second piston 5 promotes first stage piston 4 and moves upward together, and first stage piston bar 6 begins to protrude upward, second piston rod 7 relative first stage piston bars 6 are motionless, thereby the order that realizes piston rod is stretched out.

Above-described embodiment is described preferred implementation of the present utility model; be not that scope of the present utility model is limited; under the prerequisite that does not break away from the utility model design spirit; various distortion and improvement that those of ordinary skills make the technical solution of the utility model all should fall in the definite protection domain of the utility model claims.

Claims (3)

  1. One kind the order oil hydraulic cylinder, comprise cylinder seat (1), cylinder barrel (2) and cylinder cap (3), first stage piston (4) and second piston (5) are installed in the cylinder barrel (2), second piston (5) is near cylinder seat (1), be installed with first stage piston bar (6) in the upper end of first stage piston (4), second piston (5) upper end is installed with second piston rod (7), consist of the first oil pocket (8) between cylinder seat (1) and the second piston (5), consist of the second oil pocket (9) between first stage piston (4) and the second piston (5), consist of the 3rd oil pocket (10) between second piston (5) and the cylinder cap (3), wherein the first oil pocket (8) is communicated with filler opening (12), the second oil pocket (9) is communicated with oil outlet (11), offer the oil through (13) that at least one is communicated with the second oil pocket (9) and the 3rd oil pocket (10) at first stage piston (4), it is characterized in that: on first stage piston (4), also offer at least one mounting hole (14), described mounting hole (14) is lower large little step hole, a push rod (15) and a spring (16) all are installed in each mounting hole (14), the lower end of described push rod (15) has termination (151), the diameter of termination (151) is less than the diameter of the macropore of mounting hole (14), described push rod (15) passes spring (16), the lower end of spring (16) is pressed on the termination (151), the upper end of spring (16) is pressed on the step surface of mounting hole (14), the upper end of push rod (15) is fixedly connected with on the sealing plate (17), described sealing plate (17) is positioned at the upper end of first stage piston (4), and described sealing plate (17) can seal oil through (13).
  2. 2. order oil hydraulic cylinder according to claim 1, it is characterized in that: described mounting hole (14) is 3, is evenly arranged around the axis of first stage piston (4).
  3. 3. order oil hydraulic cylinder according to claim 1, it is characterized in that: described oil through (13) is 3, is evenly arranged around the axis of first stage piston (4).
CN 201220486823 2012-09-21 2012-09-21 Sequence hydraulic cylinder CN202900830U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201220486823 CN202900830U (en) 2012-09-21 2012-09-21 Sequence hydraulic cylinder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201220486823 CN202900830U (en) 2012-09-21 2012-09-21 Sequence hydraulic cylinder

Publications (1)

Publication Number Publication Date
CN202900830U true CN202900830U (en) 2013-04-24

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN 201220486823 CN202900830U (en) 2012-09-21 2012-09-21 Sequence hydraulic cylinder

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CN (1) CN202900830U (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103790892A (en) * 2014-01-22 2014-05-14 烟台未来自动装备有限责任公司 Single-action and multi-stage plunger type hydraulic cylinder with controllable extending and retracting sequence
CN103867524A (en) * 2014-03-26 2014-06-18 中国建筑科学研究院建筑机械化研究分院 Double-acting second-level hydraulic cylinder
CN105114391A (en) * 2015-08-25 2015-12-02 中国船舶重工集团公司第七一九研究所 Sequential-action hydraulic cylinder
CN105370645A (en) * 2015-12-14 2016-03-02 黑龙江省农业机械工程科学研究院 Novel sequential action hydraulic cylinder

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103790892A (en) * 2014-01-22 2014-05-14 烟台未来自动装备有限责任公司 Single-action and multi-stage plunger type hydraulic cylinder with controllable extending and retracting sequence
CN103790892B (en) * 2014-01-22 2015-11-18 烟台未来自动装备有限责任公司 The single-acting multistage column plug oil hydraulic cylinder that a kind of flexible order is controlled
CN103867524A (en) * 2014-03-26 2014-06-18 中国建筑科学研究院建筑机械化研究分院 Double-acting second-level hydraulic cylinder
CN103867524B (en) * 2014-03-26 2015-12-09 中国建筑科学研究院建筑机械化研究分院 A kind of double-action two-stage hydraulic cylinder
CN105114391A (en) * 2015-08-25 2015-12-02 中国船舶重工集团公司第七一九研究所 Sequential-action hydraulic cylinder
CN105370645A (en) * 2015-12-14 2016-03-02 黑龙江省农业机械工程科学研究院 Novel sequential action hydraulic cylinder
CN105370645B (en) * 2015-12-14 2017-04-19 黑龙江省农业机械工程科学研究院 Novel sequential action hydraulic cylinder

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Legal Events

Date Code Title Description
GR01 Patent grant
C14 Grant of patent or utility model
EE01 Entry into force of recordation of patent licensing contract

Assignee: Beijing Huatong Hengsheng Electrical Equipment Co., Ltd.

Assignor: Zhang Haiping

Contract record no.: 2013990000600

Denomination of utility model: Sequence hydraulic cylinder

Granted publication date: 20130424

License type: Exclusive License

Record date: 20130918

LICC Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model