CN202946472U - Small-flow fast-moving oil cylinder - Google Patents

Small-flow fast-moving oil cylinder Download PDF

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Publication number
CN202946472U
CN202946472U CN 201220439161 CN201220439161U CN202946472U CN 202946472 U CN202946472 U CN 202946472U CN 201220439161 CN201220439161 CN 201220439161 CN 201220439161 U CN201220439161 U CN 201220439161U CN 202946472 U CN202946472 U CN 202946472U
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CN
China
Prior art keywords
piston
oil
piston rod
shoe cream
cylinder
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Application number
CN 201220439161
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Chinese (zh)
Inventor
冯起赠
刘晓林
和国磊
许本冲
宋志斌
王年友
Original Assignee
中国地质科学院勘探技术研究所
地质矿产廊坊聚力岩土工程科技开发公司
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Priority to CN 201220439161 priority Critical patent/CN202946472U/en
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Publication of CN202946472U publication Critical patent/CN202946472U/en

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Abstract

The utility model discloses a small-flow fast-moving oil cylinder which comprises a cylinder barrel, a piston, a hollow piston rod and a hollow plunger. The piston divides the cylinder barrel into a first oil storage cavity and a second oil storage cavity, one end of the piston rod is connected with one side face, forming the first oil storage cavity, of the piston, and the other end of the piston rod is connected with the side wall of the first oil storage cavity and protrudes out of the cylinder barrel. A third oil storage cavity is formed between the piston rod and the plunger by the piston. A third oil port communicated with the third oil storage cavity is arranged at one end, protruding out of the cylinder barrel, of the piston rod, a first oil way and a second oil way are respectively arranged in the third oil storage cavity, the first oil way is communicated with the first oil storage cavity through the piston rod, the second oil way is communicated with the second oil storage cavity through the piston, and a first oil port and a second oil port are respectively formed at one end, protruding out of the cylinder barrel, of the piston rod by the first oil way and the second oil way. The small-flow fast-moving oil cylinder can solve the problem of mutual switching between a constant-speed oil cylinder and a differential oil cylinder and solve the flow matching problem in a constant-speed oil cylinder and a differential oil cylinder in a hydraulic system.

Description

A kind of small flow fast moving oil cylinder

Technical field

The utility model relates to a kind of oil cylinder, relates in particular to a kind of small flow fast moving oil cylinder.

Background technique

The common problem that exists of normally used oil cylinder is: on the one hand, when the oil cylinder cylinder diameter is larger, need larger flow to realize the fast moving oil cylinder, thereby the oil pump feed of the larger flow of needs, this will cause deployment cost high, and pipeline is complicated, and need to increase switching circuit; On the other hand, at capacity rating one regularly, oil cylinder can't be realized by changing oil circuit the switching of multiple travelling speed.

for example, date of publication is on September 14th, 2011, publication No. is that the Chinese invention patent application of CN 102182720A discloses a kind of Dual-speed cylinder, although this Dual-speed cylinder is realized the change of thrust by the Bu Tong compression area of size of moving piston rod and large piston, can make when using less compression area again oil cylinder push away speed and retraction speed fast, but the complicated structure of this Dual-speed cylinder, be not easy to processing, and structure is set as can be known according to its oil circuit, this Dual-speed cylinder one end hydraulic fluid port is connected with fuel tank, the Main Function of fuel tank is the oil return reservoir vessel of active chamber, bearing capacity is less than 1MPA, so the oil circuit that is connected with fuel tank can only bear the working pressure less than 1MPA.In addition, the design of the hydraulic fluid port passage of this kind Dual-speed cylinder can't realize in mutual conversion between constant speed, differential oil cylinder and hydraulic system the problem of flow matches in constant speed, differential oil cylinder.

The model utility content

The small flow fast moving oil cylinder that a purpose of the present utility model is to provide a kind of oil cylinder realized switching of structure and can realizes the small flow fast moving in large cylinder diameter situation.

The technical solution adopted in the utility model is: a kind of small flow fast moving oil cylinder comprises the piston rod of cylinder barrel, piston, hollow and the plunger of hollow; The inwall sealed mode sliding connection of described piston and cylinder barrel is divided into the first and second shoe cream rooms with the inner chamber of cylinder barrel; One end of described piston rod is fixedly connected with the side of formation first shoe cream room of piston, and the other end is as with the piston relative sidewall sealed mode sliding connection of output terminal with the first shoe cream room; One end of described plunger is fixedly connected with the sidewall relative with piston of the second shoe cream room, the other end and the sliding connection of piston sealed mode, and stretch in the hollow cavity of described piston rod, be provided with the opening that the hollow cavity that makes plunger communicates with the hollow cavity of piston rod on described plunger, to form the 3rd shoe cream room between piston rod and plunger; Be provided with the 3rd hydraulic fluid port that communicates with the hollow cavity of plunger on the barrel of described cylinder barrel, the second hydraulic fluid port that communicates with the second shoe cream room, and the first hydraulic fluid port that communicates with the first shoe cream room.

Wherein, the sectional area of the described plunger sectional area that equals piston deducts the sectional area of piston rod.

The small flow fast moving oil cylinder that another purpose of the present utility model is to provide the oil cylinder the realized switching of another kind of structure and can realizes the small flow fast moving in large cylinder diameter situation.

The technical solution adopted in the utility model is: a kind of small flow fast moving oil cylinder comprises the piston rod of cylinder barrel, piston, hollow and the plunger of hollow; The inwall sealed mode sliding connection of described piston and cylinder barrel is divided into the first and second shoe cream rooms with the inner chamber of cylinder barrel; One end of described piston rod is fixedly connected with the side of formation first shoe cream room of piston, the sidewall sealed mode sliding connection relative with piston of the other end and the first shoe cream room, and protruding by cylinder barrel; One end of described plunger is fixedly connected with the sidewall relative with piston of the second shoe cream room, the other end and the sliding connection of piston sealed mode, and stretch in the hollow cavity of described piston rod, to form the 3rd shoe cream room between piston rod and plunger; Described piston rod is provided with through the outwardly directed end of cylinder barrel the 3rd hydraulic fluid port that communicates with the 3rd shoe cream room, be provided with respectively the first oil circuit that communicates with the first shoe cream room through piston rod and the second oil circuit that communicates with the second shoe cream room through piston in described the 3rd shoe cream room, described the first and second oil circuits form respectively the first and second hydraulic fluid ports on the outwardly directed end of cylinder barrel at described piston rod.

Wherein, the sectional area of the described plunger sectional area that equals piston deducts the sectional area of piston rod.

The beneficial effects of the utility model are: small flow fast moving oil cylinder of the present utility model has mainly solved the problem of mutually changing at work between constant speed, differential oil cylinder, solved in the hydraulic system matching problem of flow in constant speed, differential oil cylinder, it can be applicable to the various various operating modes places that namely need high-speed motion to need again to release greatly power.The main feature of small flow fast moving oil cylinder of the present utility model is:

1, small flow fast moving cylinder structure of the present utility model is simple, do not have the attached devices such as attached fuel tank, Fill valve and sequence valve, in addition, due to the low-pressure oil storage fuel tank not being set, the structural type of oil cylinder can design by high-voltage oil cylinder, and each active chamber all can bear the above hydraulic pressure of 35MPA.

2, small flow fast moving oil cylinder of the present utility model can be used as constant speed oil cylinder, common differential oil cylinder and annular cylinder use;

3, small flow fast moving oil cylinder of the present utility model is provided with three hydraulic fluid port passages, can realize smoothly the conversion of above-mentioned three kinds of oil cylinders by the switching of oil circuit;

4, being full of fluid in the 3rd shoe cream room of oil cylinder does not contact with air.

Description of drawings

Fig. 1 is a kind of sectional view of implementing structure according to small flow fast moving oil cylinder of the present utility model;

Fig. 2 implements the sectional view of structure according to the another kind of small flow fast moving oil cylinder of the present utility model.

Embodiment

As shown in Figure 1, small flow fast moving oil cylinder of the present utility model comprises the piston rod 4 of cylinder barrel 2, piston 1, hollow, and the plunger 5 of hollow; The inwall sealed mode sliding connection of piston 1 and cylinder barrel 2, the inner chamber of cylinder barrel 2 is divided into the first shoe cream room c and the second shoe cream room b, the volume that it will be clear to one skilled in the art that the first and second shoe cream rooms will change along with the relative movement between piston and cylinder barrel; One end of piston rod 4 is fixedly connected with the side of the formation first shoe cream room c of piston 1, and the other end is as with the piston 1 relative sidewall sealed mode sliding connection of output terminal with the first shoe cream room c; One end of plunger 5 is fixedly connected with the sidewall relative with piston 1 of the second shoe cream room b, the other end and the sliding connection of piston sealed mode, and stretch in the hollow cavity of piston rod 4, be provided with the opening that the hollow cavity that makes plunger communicates with the hollow cavity of piston rod 4 on plunger 5, to form the 3rd shoe cream room a, i.e. ring-type shoe cream room between both between piston rod 4 and plunger 5; Be provided with the 3rd hydraulic fluid port A that communicates with the hollow cavity of plunger 5 on the barrel of cylinder barrel 2, the second hydraulic fluid port B that communicates with the second shoe cream room b, and the first hydraulic fluid port C that communicates with the first shoe cream room c.

Oil cylinder can be divided into according to the installation means of fixation of oil cylinder that cylinder barrel is fixed and piston rod is fixed, small flow fast moving oil cylinder shown in Fig. 1 is the fixed oil cylinder of cylinder barrel, below will provide the fixed small flow fast moving of another kind of piston rod oil cylinder under a total inventive concept.Fixed and the main distinction fixed small flow fast moving of piston rod oil cylinder of cylinder barrel of the present utility model is the design of hydraulic fluid port, and general structure is basic identical.

As shown in Figure 2, the fixed small flow fast moving of piston rod oil cylinder comprises the piston rod 4 of cylinder barrel 2, piston 1, hollow and the plunger 5 of hollow; The inwall sealed mode sliding connection of piston 1 and cylinder barrel 2 is divided into the first shoe cream room c and the second shoe cream room b with the inner chamber of cylinder barrel 2; One end of piston rod 4 is fixedly connected with the side of the formation first shoe cream room c of piston 1, the sidewall sealed mode sliding connection relative with piston 1 of the other end and the first shoe cream room c, and protruding by cylinder barrel 2, to be fixed installation; One end of plunger 5 is fixedly connected with the sidewall relative with piston 1 of the second shoe cream room b, the other end and piston 1 sealed mode sliding connection, and stretch in the hollow cavity of described piston rod 4, to form the 3rd shoe cream room a between piston rod 4 and plunger 5; Piston rod 4 is provided with the 3rd hydraulic fluid port A that communicates with the 3rd shoe cream room a through the outwardly directed end of cylinder barrel 2, be provided with respectively the first oil circuit that communicates with the first shoe cream room c through piston rod 4 and the second oil circuit that communicates with the second shoe cream room b through piston 1 in the 3rd shoe cream room a, the first and second oil circuits form respectively the first hydraulic fluid port C and the second hydraulic fluid port B on the outwardly directed end of cylinder barrel 2 at piston rod 4.In the embodiment shown in Figure 2, the two ends of the first oil circuit and the second oil circuit are supported on piston rod 4 and piston 1 respectively, the first oil circuit leads to the first shoe cream room c through piston rod 4 on the position between two ends, and the end that the second oil circuit is supported on piston 1 directly leads to the second shoe cream room b.

In the utility model, the sealed type sliding connection is between two mentioned objects and is slidably matched with can be movable relatively, and utilize the Sealing 3 shown in Fig. 1 and 2 to seal on fitting surface, make fluid substantially can not flow into another chamber from a chamber by the fitting surface between both, generally, Sealing between piston and another counterpart is arranged on piston, and the Sealing between piston rod and chamber wall is arranged on the wall of chamber, this is the basic demand to oil cylinder, and the utility model no longer is further qualified this.

The attainable function of small flow fast moving oil cylinder of the present utility model is as follows:

When the 3rd shoe cream room a passes through the 3rd hydraulic fluid port A oil-feed, under pressure, piston rod 4 or cylinder barrel 2 stretch out, and the speed of stretching out is according to the sectional area calculating of plunger 5, and the sectional area of plunger is less, only needs can realize faster stretching out of piston rod 4 or cylinder barrel 2 than the small flow oil-feed; As the first shoe cream room c during through the first hydraulic fluid port C oil-feed, piston rod 4 or cylinder barrel 2 indentations of this moment, indentation speed is calculated (being the long-pending piston rod sectional area that deducts of piston cross-section) according to the annular cross-sectional area of piston 1, this area is less, only needs can realize than the small flow oil-feed the faster indentation of piston rod 4 or cylinder barrel 2.

Small flow fast moving oil cylinder of the present utility model can be used as common differential cylinder as the oil cylinder that only has a rod and uses, and with the profile of common oil cylinder, install as broad as long; In addition, changed the area of oil pressure effect due to the employing of plunger 5 and piston rod 4, the sectional area of plunger 5 is equated with the annular cross-sectional area of piston 1, the oil-feed flow of the 3rd hydraulic fluid port A equates with the fuel-displaced flow of the first hydraulic fluid port C, therefore, also can be used as the use of constant speed oil cylinder even small flow fast moving oil cylinder of the present utility model only has a rod, and reduced installing space; Moreover small flow fast moving oil cylinder of the present utility model can be used as annular cylinder and uses.

In addition, small flow fast moving oil cylinder of the present utility model can realize that by changing inlet and outlet of fuel channel three kinds of differences of this oil cylinder stretch out the switching of speed:

The first: the 3rd shoe cream room a oil-feed, the second shoe cream room b repairing, the first shoe cream room c oil return;

The second: the 3rd shoe cream room a repairing, the second shoe cream room b oil-feed, the first shoe cream room c oil return;

The third: the 3rd shoe cream room a and the second shoe cream room b chamber oil-feed simultaneously, the first shoe cream room c chamber oil return.

When making small flow fast moving oil cylinder of the present utility model, those skilled in the art can according to the required speed of stretching out, adjust the sectional area of corresponding construction, to obtain required speed.

The above is only the better mode of execution of the utility model, is not to limit practical range of the present utility model, and the equivalence of in every case doing in protection domain of the present utility model changes and modifies, and all should think to have fallen in protection domain of the present utility model.

Claims (2)

1. a small flow fast moving oil cylinder, is characterized in that: comprise the piston rod of cylinder barrel, piston, hollow and the plunger of hollow; The inwall sealed mode sliding connection of described piston and cylinder barrel is divided into the first and second shoe cream rooms with the inner chamber of cylinder barrel; One end of described piston rod is fixedly connected with the side of formation first shoe cream room of piston, the sidewall sealed mode sliding connection relative with piston of the other end and the first shoe cream room, and protruding by cylinder barrel; One end of described plunger is fixedly connected with the sidewall relative with piston of the second shoe cream room, the other end and the sliding connection of piston sealed mode, and stretch in the hollow cavity of described piston rod, to form the 3rd shoe cream room between piston rod and plunger; Described piston rod is provided with through the outwardly directed end of cylinder barrel the 3rd hydraulic fluid port that communicates with the 3rd shoe cream room, be provided with respectively the first oil circuit that communicates with the first shoe cream room through piston rod and the second oil circuit that communicates with the second shoe cream room through piston in described the 3rd shoe cream room, described the first and second oil circuits form respectively the first and second hydraulic fluid ports on the outwardly directed end of cylinder barrel at described piston rod.
2. small flow fast moving oil cylinder according to claim 1 is characterized in that: the sectional area that the sectional area of described plunger equals piston deducts the sectional area of piston rod.
CN 201220439161 2012-08-30 2012-08-30 Small-flow fast-moving oil cylinder CN202946472U (en)

Priority Applications (1)

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Application Number Priority Date Filing Date Title
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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102788061A (en) * 2012-08-30 2012-11-21 中国地质科学院勘探技术研究所 Low-flow fast movable cylinder
CN105545873A (en) * 2016-01-21 2016-05-04 海天塑机集团有限公司 Internal differential cylinder structure and injection method thereof
CN106640834A (en) * 2016-12-30 2017-05-10 徐州重型机械有限公司 Hydraulic cylinder, hydraulic system and crane
CN108425911A (en) * 2018-05-29 2018-08-21 华中科技大学 A kind of cylinder moving type composite hydraulic cylinder
CN109058220A (en) * 2018-09-04 2018-12-21 华中科技大学 A kind of double acting combined type cylinder hydraulic cylinder suitable for small hydraulic machine
CN109175180A (en) * 2018-09-04 2019-01-11 华中科技大学 A kind of hydraulic forging press of single-beam cylinder moving type

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102788061A (en) * 2012-08-30 2012-11-21 中国地质科学院勘探技术研究所 Low-flow fast movable cylinder
CN105545873A (en) * 2016-01-21 2016-05-04 海天塑机集团有限公司 Internal differential cylinder structure and injection method thereof
CN106640834A (en) * 2016-12-30 2017-05-10 徐州重型机械有限公司 Hydraulic cylinder, hydraulic system and crane
CN106640834B (en) * 2016-12-30 2018-10-02 徐州重型机械有限公司 Hydraulic cylinder, hydraulic system and crane
CN108425911A (en) * 2018-05-29 2018-08-21 华中科技大学 A kind of cylinder moving type composite hydraulic cylinder
CN108425911B (en) * 2018-05-29 2019-09-06 华中科技大学 A kind of cylinder moving type composite hydraulic cylinder
CN109058220A (en) * 2018-09-04 2018-12-21 华中科技大学 A kind of double acting combined type cylinder hydraulic cylinder suitable for small hydraulic machine
CN109175180A (en) * 2018-09-04 2019-01-11 华中科技大学 A kind of hydraulic forging press of single-beam cylinder moving type

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GR01 Patent grant
C14 Grant of patent or utility model
ASS Succession or assignment of patent right

Owner name: GEOLOGICAL MINERAL RESOURCES LANGFANG JULI GEOTECH

Free format text: FORMER OWNER: CHINESE GEOLOGICAL SCIENCE SURVEY TECHNOLOGY INST

Effective date: 20150114

Free format text: FORMER OWNER: GEOLOGICAL MINERAL RESOURCES LANGFANG JULI GEOTECHNICAL ENGINEERING SCIENCE AND TECHNOLOGY DEVELOPME

Effective date: 20150114

C41 Transfer of patent application or patent right or utility model
TR01 Transfer of patent right

Effective date of registration: 20150114

Address after: 065000 Langfang golden city of Hebei province Guangyang District Road No. 77

Patentee after: Geological Minerals Langfang Juli Geotechnical Engineering Technology Development Co., Ltd.

Address before: 065000 Langfang golden city of Hebei province Guangyang District Road No. 77

Patentee before: Chinese Geological Science Survey Technology Inst

Patentee before: Geological Minerals Langfang Juli Geotechnical Engineering Technology Development Co., Ltd.

Effective date of registration: 20150114

Address after: 065000 Langfang golden city of Hebei province Guangyang District Road No. 77

Patentee after: Geological Minerals Langfang Juli Geotechnical Engineering Technology Development Co., Ltd.

Address before: 065000 Langfang golden city of Hebei province Guangyang District Road No. 77

Patentee before: Chinese Geological Science Survey Technology Inst

Patentee before: Geological Minerals Langfang Juli Geotechnical Engineering Technology Development Co., Ltd.

CP01 Change in the name or title of a patent holder

Address after: 065000 Langfang golden city of Hebei province Guangyang District Road No. 77

Patentee after: Langfang Juli Exploration Technology Co., Ltd

Address before: 065000 Langfang golden city of Hebei province Guangyang District Road No. 77

Patentee before: JULI GEO-ENGINEERING TECHNICAL DEVELOPMENT COMPANY (LANGFANG)

CP01 Change in the name or title of a patent holder